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authorPaul Mundt <lethal@linux-sh.org>2009-08-15 13:00:02 +0900
committerPaul Mundt <lethal@linux-sh.org>2009-08-15 13:00:02 +0900
commit4b6b987969b076298485697bfb0d0e35502642a3 (patch)
treea8f5ebd6a0b9efbe30272012d759669b0c5ddc13 /arch/sh
parentdf47cd096c8f54a5242e3a2ffb4525c804567eda (diff)
parent60e0a4c7adc700f2d2929cdb2d0055e519a3eb3d (diff)
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Merge branch 'master' into sh/hwblk
Diffstat (limited to 'arch/sh')
-rw-r--r--arch/sh/Kconfig.debug8
-rw-r--r--arch/sh/Makefile4
-rw-r--r--arch/sh/boards/board-ap325rxa.c2
-rw-r--r--arch/sh/boards/mach-kfr2r09/Makefile1
-rw-r--r--arch/sh/boards/mach-kfr2r09/lcd_wqvga.c332
-rw-r--r--arch/sh/boards/mach-kfr2r09/setup.c117
-rw-r--r--arch/sh/boards/mach-migor/setup.c2
-rw-r--r--arch/sh/boards/mach-se/7724/setup.c63
-rw-r--r--arch/sh/boot/romimage/head.S2
-rw-r--r--arch/sh/include/asm/dma-sh.h1
-rw-r--r--arch/sh/include/asm/dwarf.h402
-rw-r--r--arch/sh/include/asm/entry-macros.S12
-rw-r--r--arch/sh/include/asm/hardirq.h13
-rw-r--r--arch/sh/include/asm/sections.h1
-rw-r--r--arch/sh/include/asm/stacktrace.h25
-rw-r--r--arch/sh/include/asm/unwinder.h25
-rw-r--r--arch/sh/include/asm/vmlinux.lds.h17
-rw-r--r--arch/sh/include/cpu-sh4/cpu/dma-sh4a.h3
-rw-r--r--arch/sh/include/mach-common/mach/migor.h64
-rw-r--r--arch/sh/include/mach-common/mach/romimage.h (renamed from arch/sh/include/mach-common/romimage.h)0
-rw-r--r--arch/sh/include/mach-kfr2r09/mach/kfr2r09.h21
-rw-r--r--arch/sh/include/mach-kfr2r09/mach/partner-jet-setup.txt (renamed from arch/sh/include/mach-kfr2r09/partner-jet-setup.txt)0
-rw-r--r--arch/sh/include/mach-kfr2r09/mach/romimage.h (renamed from arch/sh/include/mach-kfr2r09/romimage.h)0
-rw-r--r--arch/sh/include/mach-migor/mach/migor.h14
-rw-r--r--arch/sh/kernel/Makefile_327
-rw-r--r--arch/sh/kernel/Makefile_643
-rw-r--r--arch/sh/kernel/cpu/init.c34
-rw-r--r--arch/sh/kernel/cpu/sh2/entry.S3
-rw-r--r--arch/sh/kernel/cpu/sh2a/entry.S3
-rw-r--r--arch/sh/kernel/cpu/sh3/entry.S1
-rw-r--r--arch/sh/kernel/cpu/shmobile/sleep.S70
-rw-r--r--arch/sh/kernel/dumpstack.c123
-rw-r--r--arch/sh/kernel/dwarf.c902
-rw-r--r--arch/sh/kernel/early_printk.c1
-rw-r--r--arch/sh/kernel/entry-common.S8
-rw-r--r--arch/sh/kernel/irq.c4
-rw-r--r--arch/sh/kernel/stacktrace.c98
-rw-r--r--arch/sh/kernel/traps_32.c24
-rw-r--r--arch/sh/kernel/unwinder.c162
-rw-r--r--arch/sh/kernel/vmlinux.lds.S4
-rw-r--r--arch/sh/mm/ioremap_64.c6
-rw-r--r--arch/sh/oprofile/backtrace.c84
42 files changed, 2462 insertions, 204 deletions
diff --git a/arch/sh/Kconfig.debug b/arch/sh/Kconfig.debug
index 763b792..741d20f 100644
--- a/arch/sh/Kconfig.debug
+++ b/arch/sh/Kconfig.debug
@@ -110,6 +110,14 @@ config DUMP_CODE
Those looking for more verbose debugging output should say Y.
+config DWARF_UNWINDER
+ bool "Enable the DWARF unwinder for stacktraces"
+ select FRAME_POINTER
+ default n
+ help
+ Enabling this option will make stacktraces more accurate, at
+ the cost of an increase in overall kernel size.
+
config SH_NO_BSS_INIT
bool "Avoid zeroing BSS (to speed-up startup on suitable platforms)"
depends on DEBUG_KERNEL
diff --git a/arch/sh/Makefile b/arch/sh/Makefile
index b6ff337..e26421b 100644
--- a/arch/sh/Makefile
+++ b/arch/sh/Makefile
@@ -191,6 +191,10 @@ ifeq ($(CONFIG_MCOUNT),y)
KBUILD_CFLAGS += -pg
endif
+ifeq ($(CONFIG_DWARF_UNWINDER),y)
+ KBUILD_CFLAGS += -fasynchronous-unwind-tables
+endif
+
libs-$(CONFIG_SUPERH32) := arch/sh/lib/ $(libs-y)
libs-$(CONFIG_SUPERH64) := arch/sh/lib64/ $(libs-y)
diff --git a/arch/sh/boards/board-ap325rxa.c b/arch/sh/boards/board-ap325rxa.c
index 07a5474..19eea4a 100644
--- a/arch/sh/boards/board-ap325rxa.c
+++ b/arch/sh/boards/board-ap325rxa.c
@@ -553,7 +553,7 @@ static int __init ap325rxa_devices_setup(void)
return platform_add_devices(ap325rxa_devices,
ARRAY_SIZE(ap325rxa_devices));
}
-device_initcall(ap325rxa_devices_setup);
+arch_initcall(ap325rxa_devices_setup);
/* Return the board specific boot mode pin configuration */
static int ap325rxa_mode_pins(void)
diff --git a/arch/sh/boards/mach-kfr2r09/Makefile b/arch/sh/boards/mach-kfr2r09/Makefile
index 7703756..5d58678 100644
--- a/arch/sh/boards/mach-kfr2r09/Makefile
+++ b/arch/sh/boards/mach-kfr2r09/Makefile
@@ -1 +1,2 @@
obj-y := setup.o
+obj-$(CONFIG_FB_SH_MOBILE_LCDC) += lcd_wqvga.o
diff --git a/arch/sh/boards/mach-kfr2r09/lcd_wqvga.c b/arch/sh/boards/mach-kfr2r09/lcd_wqvga.c
new file mode 100644
index 0000000..8ccb1cc
--- /dev/null
+++ b/arch/sh/boards/mach-kfr2r09/lcd_wqvga.c
@@ -0,0 +1,332 @@
+/*
+ * KFR2R09 LCD panel support
+ *
+ * Copyright (C) 2009 Magnus Damm
+ *
+ * Register settings based on the out-of-tree t33fb.c driver
+ * Copyright (C) 2008 Lineo Solutions, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive for
+ * more details.
+ */
+
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/gpio.h>
+#include <video/sh_mobile_lcdc.h>
+#include <mach/kfr2r09.h>
+#include <cpu/sh7724.h>
+
+/* The on-board LCD module is a Hitachi TX07D34VM0AAA. This module is made
+ * up of a 240x400 LCD hooked up to a R61517 driver IC. The driver IC is
+ * communicating with the main port of the LCDC using an 18-bit SYS interface.
+ *
+ * The device code for this LCD module is 0x01221517.
+ */
+
+static const unsigned char data_frame_if[] = {
+ 0x02, /* WEMODE: 1=cont, 0=one-shot */
+ 0x00, 0x00,
+ 0x00, /* EPF, DFM */
+ 0x02, /* RIM[1] : 1 (18bpp) */
+};
+
+static const unsigned char data_panel[] = {
+ 0x0b,
+ 0x63, /* 400 lines */
+ 0x04, 0x00, 0x00, 0x04, 0x11, 0x00, 0x00,
+};
+
+static const unsigned char data_timing[] = {
+ 0x00, 0x00, 0x13, 0x08, 0x08,
+};
+
+static const unsigned char data_timing_src[] = {
+ 0x11, 0x01, 0x00, 0x01,
+};
+
+static const unsigned char data_gamma[] = {
+ 0x01, 0x02, 0x08, 0x23, 0x03, 0x0c, 0x00, 0x06, 0x00, 0x00,
+ 0x01, 0x00, 0x0c, 0x23, 0x03, 0x08, 0x02, 0x06, 0x00, 0x00,
+};
+
+static const unsigned char data_power[] = {
+ 0x07, 0xc5, 0xdc, 0x02, 0x33, 0x0a,
+};
+
+static unsigned long read_reg(void *sohandle,
+ struct sh_mobile_lcdc_sys_bus_ops *so)
+{
+ return so->read_data(sohandle);
+}
+
+static void write_reg(void *sohandle,
+ struct sh_mobile_lcdc_sys_bus_ops *so,
+ int i, unsigned long v)
+{
+ if (i)
+ so->write_data(sohandle, v); /* PTH4/LCDRS High [param, 17:0] */
+ else
+ so->write_index(sohandle, v); /* PTH4/LCDRS Low [cmd, 7:0] */
+}
+
+static void write_data(void *sohandle,
+ struct sh_mobile_lcdc_sys_bus_ops *so,
+ unsigned char const *data, int no_data)
+{
+ int i;
+
+ for (i = 0; i < no_data; i++)
+ write_reg(sohandle, so, 1, data[i]);
+}
+
+static unsigned long read_device_code(void *sohandle,
+ struct sh_mobile_lcdc_sys_bus_ops *so)
+{
+ unsigned long device_code;
+
+ /* access protect OFF */
+ write_reg(sohandle, so, 0, 0xb0);
+ write_reg(sohandle, so, 1, 0x00);
+
+ /* deep standby OFF */
+ write_reg(sohandle, so, 0, 0xb1);
+ write_reg(sohandle, so, 1, 0x00);
+
+ /* device code command */
+ write_reg(sohandle, so, 0, 0xbf);
+ mdelay(50);
+
+ /* dummy read */
+ read_reg(sohandle, so);
+
+ /* read device code */
+ device_code = ((read_reg(sohandle, so) & 0xff) << 24);
+ device_code |= ((read_reg(sohandle, so) & 0xff) << 16);
+ device_code |= ((read_reg(sohandle, so) & 0xff) << 8);
+ device_code |= (read_reg(sohandle, so) & 0xff);
+
+ return device_code;
+}
+
+static void write_memory_start(void *sohandle,
+ struct sh_mobile_lcdc_sys_bus_ops *so)
+{
+ write_reg(sohandle, so, 0, 0x2c);
+}
+
+static void clear_memory(void *sohandle,
+ struct sh_mobile_lcdc_sys_bus_ops *so)
+{
+ int i;
+
+ /* write start */
+ write_memory_start(sohandle, so);
+
+ /* paint it black */
+ for (i = 0; i < (240 * 400); i++)
+ write_reg(sohandle, so, 1, 0x00);
+}
+
+static void display_on(void *sohandle,
+ struct sh_mobile_lcdc_sys_bus_ops *so)
+{
+ /* access protect off */
+ write_reg(sohandle, so, 0, 0xb0);
+ write_reg(sohandle, so, 1, 0x00);
+
+ /* exit deep standby mode */
+ write_reg(sohandle, so, 0, 0xb1);
+ write_reg(sohandle, so, 1, 0x00);
+
+ /* frame memory I/F */
+ write_reg(sohandle, so, 0, 0xb3);
+ write_data(sohandle, so, data_frame_if, ARRAY_SIZE(data_frame_if));
+
+ /* display mode and frame memory write mode */
+ write_reg(sohandle, so, 0, 0xb4);
+ write_reg(sohandle, so, 1, 0x00); /* DBI, internal clock */
+
+ /* panel */
+ write_reg(sohandle, so, 0, 0xc0);
+ write_data(sohandle, so, data_panel, ARRAY_SIZE(data_panel));
+
+ /* timing (normal) */
+ write_reg(sohandle, so, 0, 0xc1);
+ write_data(sohandle, so, data_timing, ARRAY_SIZE(data_timing));
+
+ /* timing (partial) */
+ write_reg(sohandle, so, 0, 0xc2);
+ write_data(sohandle, so, data_timing, ARRAY_SIZE(data_timing));
+
+ /* timing (idle) */
+ write_reg(sohandle, so, 0, 0xc3);
+ write_data(sohandle, so, data_timing, ARRAY_SIZE(data_timing));
+
+ /* timing (source/VCOM/gate driving) */
+ write_reg(sohandle, so, 0, 0xc4);
+ write_data(sohandle, so, data_timing_src, ARRAY_SIZE(data_timing_src));
+
+ /* gamma (red) */
+ write_reg(sohandle, so, 0, 0xc8);
+ write_data(sohandle, so, data_gamma, ARRAY_SIZE(data_gamma));
+
+ /* gamma (green) */
+ write_reg(sohandle, so, 0, 0xc9);
+ write_data(sohandle, so, data_gamma, ARRAY_SIZE(data_gamma));
+
+ /* gamma (blue) */
+ write_reg(sohandle, so, 0, 0xca);
+ write_data(sohandle, so, data_gamma, ARRAY_SIZE(data_gamma));
+
+ /* power (common) */
+ write_reg(sohandle, so, 0, 0xd0);
+ write_data(sohandle, so, data_power, ARRAY_SIZE(data_power));
+
+ /* VCOM */
+ write_reg(sohandle, so, 0, 0xd1);
+ write_reg(sohandle, so, 1, 0x00);
+ write_reg(sohandle, so, 1, 0x0f);
+ write_reg(sohandle, so, 1, 0x02);
+
+ /* power (normal) */
+ write_reg(sohandle, so, 0, 0xd2);
+ write_reg(sohandle, so, 1, 0x63);
+ write_reg(sohandle, so, 1, 0x24);
+
+ /* power (partial) */
+ write_reg(sohandle, so, 0, 0xd3);
+ write_reg(sohandle, so, 1, 0x63);
+ write_reg(sohandle, so, 1, 0x24);
+
+ /* power (idle) */
+ write_reg(sohandle, so, 0, 0xd4);
+ write_reg(sohandle, so, 1, 0x63);
+ write_reg(sohandle, so, 1, 0x24);
+
+ write_reg(sohandle, so, 0, 0xd8);
+ write_reg(sohandle, so, 1, 0x77);
+ write_reg(sohandle, so, 1, 0x77);
+
+ /* TE signal */
+ write_reg(sohandle, so, 0, 0x35);
+ write_reg(sohandle, so, 1, 0x00);
+
+ /* TE signal line */
+ write_reg(sohandle, so, 0, 0x44);
+ write_reg(sohandle, so, 1, 0x00);
+ write_reg(sohandle, so, 1, 0x00);
+
+ /* column address */
+ write_reg(sohandle, so, 0, 0x2a);
+ write_reg(sohandle, so, 1, 0x00);
+ write_reg(sohandle, so, 1, 0x00);
+ write_reg(sohandle, so, 1, 0x00);
+ write_reg(sohandle, so, 1, 0xef);
+
+ /* page address */
+ write_reg(sohandle, so, 0, 0x2b);
+ write_reg(sohandle, so, 1, 0x00);
+ write_reg(sohandle, so, 1, 0x00);
+ write_reg(sohandle, so, 1, 0x01);
+ write_reg(sohandle, so, 1, 0x8f);
+
+ /* exit sleep mode */
+ write_reg(sohandle, so, 0, 0x11);
+
+ mdelay(120);
+
+ /* clear vram */
+ clear_memory(sohandle, so);
+
+ /* display ON */
+ write_reg(sohandle, so, 0, 0x29);
+ mdelay(1);
+
+ write_memory_start(sohandle, so);
+}
+
+int kfr2r09_lcd_setup(void *board_data, void *sohandle,
+ struct sh_mobile_lcdc_sys_bus_ops *so)
+{
+ /* power on */
+ gpio_set_value(GPIO_PTF4, 0); /* PROTECT/ -> L */
+ gpio_set_value(GPIO_PTE4, 0); /* LCD_RST/ -> L */
+ gpio_set_value(GPIO_PTF4, 1); /* PROTECT/ -> H */
+ udelay(1100);
+ gpio_set_value(GPIO_PTE4, 1); /* LCD_RST/ -> H */
+ udelay(10);
+ gpio_set_value(GPIO_PTF4, 0); /* PROTECT/ -> L */
+ mdelay(20);
+
+ if (read_device_code(sohandle, so) != 0x01221517)
+ return -ENODEV;
+
+ pr_info("KFR2R09 WQVGA LCD Module detected.\n");
+
+ display_on(sohandle, so);
+ return 0;
+}
+
+#define CTRL_CKSW 0x10
+#define CTRL_C10 0x20
+#define CTRL_CPSW 0x80
+#define MAIN_MLED4 0x40
+#define MAIN_MSW 0x80
+
+static int kfr2r09_lcd_backlight(int on)
+{
+ struct i2c_adapter *a;
+ struct i2c_msg msg;
+ unsigned char buf[2];
+ int ret;
+
+ a = i2c_get_adapter(0);
+ if (!a)
+ return -ENODEV;
+
+ buf[0] = 0x00;
+ if (on)
+ buf[1] = CTRL_CPSW | CTRL_C10 | CTRL_CKSW;
+ else
+ buf[1] = 0;
+
+ msg.addr = 0x75;
+ msg.buf = buf;
+ msg.len = 2;
+ msg.flags = 0;
+ ret = i2c_transfer(a, &msg, 1);
+ if (ret != 1)
+ return -ENODEV;
+
+ buf[0] = 0x01;
+ if (on)
+ buf[1] = MAIN_MSW | MAIN_MLED4 | 0x0c;
+ else
+ buf[1] = 0;
+
+ msg.addr = 0x75;
+ msg.buf = buf;
+ msg.len = 2;
+ msg.flags = 0;
+ ret = i2c_transfer(a, &msg, 1);
+ if (ret != 1)
+ return -ENODEV;
+
+ return 0;
+}
+
+void kfr2r09_lcd_on(void *board_data)
+{
+ kfr2r09_lcd_backlight(1);
+}
+
+void kfr2r09_lcd_off(void *board_data)
+{
+ kfr2r09_lcd_backlight(0);
+}
diff --git a/arch/sh/boards/mach-kfr2r09/setup.c b/arch/sh/boards/mach-kfr2r09/setup.c
index 0e9b390..c965337 100644
--- a/arch/sh/boards/mach-kfr2r09/setup.c
+++ b/arch/sh/boards/mach-kfr2r09/setup.c
@@ -11,15 +11,18 @@
#include <linux/platform_device.h>
#include <linux/interrupt.h>
#include <linux/mtd/physmap.h>
+#include <linux/mtd/onenand.h>
#include <linux/delay.h>
#include <linux/clk.h>
#include <linux/gpio.h>
#include <linux/input.h>
+#include <video/sh_mobile_lcdc.h>
#include <asm/clock.h>
#include <asm/machvec.h>
#include <asm/io.h>
#include <asm/sh_keysc.h>
#include <cpu/sh7724.h>
+#include <mach/kfr2r09.h>
static struct mtd_partition kfr2r09_nor_flash_partitions[] =
{
@@ -60,6 +63,21 @@ static struct platform_device kfr2r09_nor_flash_device = {
},
};
+static struct resource kfr2r09_nand_flash_resources[] = {
+ [0] = {
+ .name = "NAND Flash",
+ .start = 0x10000000,
+ .end = 0x1001ffff,
+ .flags = IORESOURCE_MEM,
+ }
+};
+
+static struct platform_device kfr2r09_nand_flash_device = {
+ .name = "onenand-flash",
+ .resource = kfr2r09_nand_flash_resources,
+ .num_resources = ARRAY_SIZE(kfr2r09_nand_flash_resources),
+};
+
static struct sh_keysc_info kfr2r09_sh_keysc_info = {
.mode = SH_KEYSC_MODE_1, /* KEYOUT0->4, KEYIN0->4 */
.scan_timing = 3,
@@ -100,13 +118,77 @@ static struct platform_device kfr2r09_sh_keysc_device = {
},
};
+static struct sh_mobile_lcdc_info kfr2r09_sh_lcdc_info = {
+ .clock_source = LCDC_CLK_BUS,
+ .ch[0] = {
+ .chan = LCDC_CHAN_MAINLCD,
+ .bpp = 16,
+ .interface_type = SYS18,
+ .clock_divider = 6,
+ .flags = LCDC_FLAGS_DWPOL,
+ .lcd_cfg = {
+ .name = "TX07D34VM0AAA",
+ .xres = 240,
+ .yres = 400,
+ .left_margin = 0,
+ .right_margin = 16,
+ .hsync_len = 8,
+ .upper_margin = 0,
+ .lower_margin = 1,
+ .vsync_len = 1,
+ .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ },
+ .lcd_size_cfg = {
+ .width = 35,
+ .height = 58,
+ },
+ .board_cfg = {
+ .setup_sys = kfr2r09_lcd_setup,
+ .display_on = kfr2r09_lcd_on,
+ .display_off = kfr2r09_lcd_off,
+ },
+ .sys_bus_cfg = {
+ .ldmt2r = 0x07010904,
+ .ldmt3r = 0x14012914,
+ /* set 1s delay to encourage fsync() */
+ .deferred_io_msec = 1000,
+ },
+ }
+};
+
+static struct resource kfr2r09_sh_lcdc_resources[] = {
+ [0] = {
+ .name = "LCDC",
+ .start = 0xfe940000, /* P4-only space */
+ .end = 0xfe941fff,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = 106,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device kfr2r09_sh_lcdc_device = {
+ .name = "sh_mobile_lcdc_fb",
+ .num_resources = ARRAY_SIZE(kfr2r09_sh_lcdc_resources),
+ .resource = kfr2r09_sh_lcdc_resources,
+ .dev = {
+ .platform_data = &kfr2r09_sh_lcdc_info,
+ },
+};
+
static struct platform_device *kfr2r09_devices[] __initdata = {
&kfr2r09_nor_flash_device,
+ &kfr2r09_nand_flash_device,
&kfr2r09_sh_keysc_device,
+ &kfr2r09_sh_lcdc_device,
};
#define BSC_CS0BCR 0xfec10004
#define BSC_CS0WCR 0xfec10024
+#define BSC_CS4BCR 0xfec10010
+#define BSC_CS4WCR 0xfec10030
static int __init kfr2r09_devices_setup(void)
{
@@ -118,6 +200,10 @@ static int __init kfr2r09_devices_setup(void)
ctrl_outl(0x36db0400, BSC_CS0BCR);
ctrl_outl(0x00000500, BSC_CS0WCR);
+ /* setup NAND flash at CS4 */
+ ctrl_outl(0x36db0400, BSC_CS4BCR);
+ ctrl_outl(0x00000500, BSC_CS4WCR);
+
/* setup KEYSC pins */
gpio_request(GPIO_FN_KEYOUT0, NULL);
gpio_request(GPIO_FN_KEYOUT1, NULL);
@@ -131,6 +217,37 @@ static int __init kfr2r09_devices_setup(void)
gpio_request(GPIO_FN_KEYIN4, NULL);
gpio_request(GPIO_FN_KEYOUT5_IN5, NULL);
+ /* setup LCDC pins for SYS panel */
+ gpio_request(GPIO_FN_LCDD17, NULL);
+ gpio_request(GPIO_FN_LCDD16, NULL);
+ gpio_request(GPIO_FN_LCDD15, NULL);
+ gpio_request(GPIO_FN_LCDD14, NULL);
+ gpio_request(GPIO_FN_LCDD13, NULL);
+ gpio_request(GPIO_FN_LCDD12, NULL);
+ gpio_request(GPIO_FN_LCDD11, NULL);
+ gpio_request(GPIO_FN_LCDD10, NULL);
+ gpio_request(GPIO_FN_LCDD9, NULL);
+ gpio_request(GPIO_FN_LCDD8, NULL);
+ gpio_request(GPIO_FN_LCDD7, NULL);
+ gpio_request(GPIO_FN_LCDD6, NULL);
+ gpio_request(GPIO_FN_LCDD5, NULL);
+ gpio_request(GPIO_FN_LCDD4, NULL);
+ gpio_request(GPIO_FN_LCDD3, NULL);
+ gpio_request(GPIO_FN_LCDD2, NULL);
+ gpio_request(GPIO_FN_LCDD1, NULL);
+ gpio_request(GPIO_FN_LCDD0, NULL);
+ gpio_request(GPIO_FN_LCDRS, NULL); /* LCD_RS */
+ gpio_request(GPIO_FN_LCDCS, NULL); /* LCD_CS/ */
+ gpio_request(GPIO_FN_LCDRD, NULL); /* LCD_RD/ */
+ gpio_request(GPIO_FN_LCDWR, NULL); /* LCD_WR/ */
+ gpio_request(GPIO_FN_LCDVSYN, NULL); /* LCD_VSYNC */
+ gpio_request(GPIO_PTE4, NULL); /* LCD_RST/ */
+ gpio_direction_output(GPIO_PTE4, 1);
+ gpio_request(GPIO_PTF4, NULL); /* PROTECT/ */
+ gpio_direction_output(GPIO_PTF4, 1);
+ gpio_request(GPIO_PTU0, NULL); /* LEDSTDBY/ */
+ gpio_direction_output(GPIO_PTU0, 1);
+
return platform_add_devices(kfr2r09_devices,
ARRAY_SIZE(kfr2r09_devices));
}
diff --git a/arch/sh/boards/mach-migor/setup.c b/arch/sh/boards/mach-migor/setup.c
index a508a0f..be8f0d9 100644
--- a/arch/sh/boards/mach-migor/setup.c
+++ b/arch/sh/boards/mach-migor/setup.c
@@ -617,7 +617,7 @@ static int __init migor_devices_setup(void)
return platform_add_devices(migor_devices, ARRAY_SIZE(migor_devices));
}
-__initcall(migor_devices_setup);
+arch_initcall(migor_devices_setup);
/* Return the board specific boot mode pin configuration */
static int migor_mode_pins(void)
diff --git a/arch/sh/boards/mach-se/7724/setup.c b/arch/sh/boards/mach-se/7724/setup.c
index 8de5ebc..d922e1b 100644
--- a/arch/sh/boards/mach-se/7724/setup.c
+++ b/arch/sh/boards/mach-se/7724/setup.c
@@ -39,7 +39,15 @@
* SW41 : abxx xxxx -> a = 0 : Analog monitor
* 1 : Digital monitor
* b = 0 : VGA
- * 1 : SVGA
+ * 1 : 720p
+ */
+
+/*
+ * about 720p
+ *
+ * When you use 1280 x 720 lcdc output,
+ * you should change OSC6 lcdc clock from 25.175MHz to 74.25MHz,
+ * and change SW41 to use 720p
*/
/* Heartbeat */
@@ -247,7 +255,7 @@ static struct platform_device ceu1_device = {
},
};
-/* KEYSC */
+/* KEYSC in SoC (Needs SW33-2 set to ON) */
static struct sh_keysc_info keysc_info = {
.mode = SH_KEYSC_MODE_1,
.scan_timing = 10,
@@ -264,12 +272,13 @@ static struct sh_keysc_info keysc_info = {
static struct resource keysc_resources[] = {
[0] = {
- .start = 0x1a204000,
- .end = 0x1a20400f,
+ .name = "KEYSC",
+ .start = 0x044b0000,
+ .end = 0x044b000f,
.flags = IORESOURCE_MEM,
},
[1] = {
- .start = IRQ0_KEY,
+ .start = 79,
.flags = IORESOURCE_IRQ,
},
};
@@ -439,6 +448,32 @@ static int __init devices_setup(void)
/* turn on USB clocks, use external clock */
ctrl_outw((ctrl_inw(PORT_MSELCRB) & ~0xc000) | 0x8000, PORT_MSELCRB);
+#ifdef CONFIG_PM
+ /* Let LED9 show STATUS2 */
+ gpio_request(GPIO_FN_STATUS2, NULL);
+
+ /* Lit LED10 show STATUS0 */
+ gpio_request(GPIO_FN_STATUS0, NULL);
+
+ /* Lit LED11 show PDSTATUS */
+ gpio_request(GPIO_FN_PDSTATUS, NULL);
+#else
+ /* Lit LED9 */
+ gpio_request(GPIO_PTJ6, NULL);
+ gpio_direction_output(GPIO_PTJ6, 1);
+ gpio_export(GPIO_PTJ6, 0);
+
+ /* Lit LED10 */
+ gpio_request(GPIO_PTJ5, NULL);
+ gpio_direction_output(GPIO_PTJ5, 1);
+ gpio_export(GPIO_PTJ5, 0);
+
+ /* Lit LED11 */
+ gpio_request(GPIO_PTJ7, NULL);
+ gpio_direction_output(GPIO_PTJ7, 1);
+ gpio_export(GPIO_PTJ7, 0);
+#endif
+
/* enable USB0 port */
ctrl_outw(0x0600, 0xa40501d4);
@@ -564,15 +599,15 @@ static int __init devices_setup(void)
sh_eth_init();
if (sw & SW41_B) {
- /* SVGA */
- lcdc_info.ch[0].lcd_cfg.xres = 800;
- lcdc_info.ch[0].lcd_cfg.yres = 600;
- lcdc_info.ch[0].lcd_cfg.left_margin = 142;
- lcdc_info.ch[0].lcd_cfg.right_margin = 52;
- lcdc_info.ch[0].lcd_cfg.hsync_len = 96;
- lcdc_info.ch[0].lcd_cfg.upper_margin = 24;
- lcdc_info.ch[0].lcd_cfg.lower_margin = 2;
- lcdc_info.ch[0].lcd_cfg.vsync_len = 2;
+ /* 720p */
+ lcdc_info.ch[0].lcd_cfg.xres = 1280;
+ lcdc_info.ch[0].lcd_cfg.yres = 720;
+ lcdc_info.ch[0].lcd_cfg.left_margin = 220;
+ lcdc_info.ch[0].lcd_cfg.right_margin = 110;
+ lcdc_info.ch[0].lcd_cfg.hsync_len = 40;
+ lcdc_info.ch[0].lcd_cfg.upper_margin = 20;
+ lcdc_info.ch[0].lcd_cfg.lower_margin = 5;
+ lcdc_info.ch[0].lcd_cfg.vsync_len = 5;
} else {
/* VGA */
lcdc_info.ch[0].lcd_cfg.xres = 640;
diff --git a/arch/sh/boot/romimage/head.S b/arch/sh/boot/romimage/head.S
index 97a087b..219bc62 100644
--- a/arch/sh/boot/romimage/head.S
+++ b/arch/sh/boot/romimage/head.S
@@ -7,4 +7,4 @@
.text
.global romstart
romstart:
-#include <romimage.h>
+#include <mach/romimage.h>
diff --git a/arch/sh/include/asm/dma-sh.h b/arch/sh/include/asm/dma-sh.h
index 0c8f8e1..68a5f4c 100644
--- a/arch/sh/include/asm/dma-sh.h
+++ b/arch/sh/include/asm/dma-sh.h
@@ -16,6 +16,7 @@
/* DMAOR contorl: The DMAOR access size is different by CPU.*/
#if defined(CONFIG_CPU_SUBTYPE_SH7723) || \
+ defined(CONFIG_CPU_SUBTYPE_SH7724) || \
defined(CONFIG_CPU_SUBTYPE_SH7780) || \
defined(CONFIG_CPU_SUBTYPE_SH7785)
#define dmaor_read_reg(n) \
diff --git a/arch/sh/include/asm/dwarf.h b/arch/sh/include/asm/dwarf.h
new file mode 100644
index 0000000..60b1807
--- /dev/null
+++ b/arch/sh/include/asm/dwarf.h
@@ -0,0 +1,402 @@
+/*
+ * Copyright (C) 2009 Matt Fleming <matt@console-pimps.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ */
+#ifndef __ASM_SH_DWARF_H
+#define __ASM_SH_DWARF_H
+
+#ifdef CONFIG_DWARF_UNWINDER
+
+/*
+ * DWARF expression operations
+ */
+#define DW_OP_addr 0x03
+#define DW_OP_deref 0x06
+#define DW_OP_const1u 0x08
+#define DW_OP_const1s 0x09
+#define DW_OP_const2u 0x0a
+#define DW_OP_const2s 0x0b
+#define DW_OP_const4u 0x0c
+#define DW_OP_const4s 0x0d
+#define DW_OP_const8u 0x0e
+#define DW_OP_const8s 0x0f
+#define DW_OP_constu 0x10
+#define DW_OP_consts 0x11
+#define DW_OP_dup 0x12
+#define DW_OP_drop 0x13
+#define DW_OP_over 0x14
+#define DW_OP_pick 0x15
+#define DW_OP_swap 0x16
+#define DW_OP_rot 0x17
+#define DW_OP_xderef 0x18
+#define DW_OP_abs 0x19
+#define DW_OP_and 0x1a
+#define DW_OP_div 0x1b
+#define DW_OP_minus 0x1c
+#define DW_OP_mod 0x1d
+#define DW_OP_mul 0x1e
+#define DW_OP_neg 0x1f
+#define DW_OP_not 0x20
+#define DW_OP_or 0x21
+#define DW_OP_plus 0x22
+#define DW_OP_plus_uconst 0x23
+#define DW_OP_shl 0x24
+#define DW_OP_shr 0x25
+#define DW_OP_shra 0x26
+#define DW_OP_xor 0x27
+#define DW_OP_skip 0x2f
+#define DW_OP_bra 0x28
+#define DW_OP_eq 0x29
+#define DW_OP_ge 0x2a
+#define DW_OP_gt 0x2b
+#define DW_OP_le 0x2c
+#define DW_OP_lt 0x2d
+#define DW_OP_ne 0x2e
+#define DW_OP_lit0 0x30
+#define DW_OP_lit1 0x31
+#define DW_OP_lit2 0x32
+#define DW_OP_lit3 0x33
+#define DW_OP_lit4 0x34
+#define DW_OP_lit5 0x35
+#define DW_OP_lit6 0x36
+#define DW_OP_lit7 0x37
+#define DW_OP_lit8 0x38
+#define DW_OP_lit9 0x39
+#define DW_OP_lit10 0x3a
+#define DW_OP_lit11 0x3b
+#define DW_OP_lit12 0x3c
+#define DW_OP_lit13 0x3d
+#define DW_OP_lit14 0x3e
+#define DW_OP_lit15 0x3f
+#define DW_OP_lit16 0x40
+#define DW_OP_lit17 0x41
+#define DW_OP_lit18 0x42
+#define DW_OP_lit19 0x43
+#define DW_OP_lit20 0x44
+#define DW_OP_lit21 0x45
+#define DW_OP_lit22 0x46
+#define DW_OP_lit23 0x47
+#define DW_OP_lit24 0x48
+#define DW_OP_lit25 0x49
+#define DW_OP_lit26 0x4a
+#define DW_OP_lit27 0x4b
+#define DW_OP_lit28 0x4c
+#define DW_OP_lit29 0x4d
+#define DW_OP_lit30 0x4e
+#define DW_OP_lit31 0x4f
+#define DW_OP_reg0 0x50
+#define DW_OP_reg1 0x51
+#define DW_OP_reg2 0x52
+#define DW_OP_reg3 0x53
+#define DW_OP_reg4 0x54
+#define DW_OP_reg5 0x55
+#define DW_OP_reg6 0x56
+#define DW_OP_reg7 0x57
+#define DW_OP_reg8 0x58
+#define DW_OP_reg9 0x59
+#define DW_OP_reg10 0x5a
+#define DW_OP_reg11 0x5b
+#define DW_OP_reg12 0x5c
+#define DW_OP_reg13 0x5d
+#define DW_OP_reg14 0x5e
+#define DW_OP_reg15 0x5f
+#define DW_OP_reg16 0x60
+#define DW_OP_reg17 0x61
+#define DW_OP_reg18 0x62
+#define DW_OP_reg19 0x63
+#define DW_OP_reg20 0x64
+#define DW_OP_reg21 0x65
+#define DW_OP_reg22 0x66
+#define DW_OP_reg23 0x67
+#define DW_OP_reg24 0x68
+#define DW_OP_reg25 0x69
+#define DW_OP_reg26 0x6a
+#define DW_OP_reg27 0x6b
+#define DW_OP_reg28 0x6c
+#define DW_OP_reg29 0x6d
+#define DW_OP_reg30 0x6e
+#define DW_OP_reg31 0x6f
+#define DW_OP_breg0 0x70
+#define DW_OP_breg1 0x71
+#define DW_OP_breg2 0x72
+#define DW_OP_breg3 0x73
+#define DW_OP_breg4 0x74
+#define DW_OP_breg5 0x75
+#define DW_OP_breg6 0x76
+#define DW_OP_breg7 0x77
+#define DW_OP_breg8 0x78
+#define DW_OP_breg9 0x79
+#define DW_OP_breg10 0x7a
+#define DW_OP_breg11 0x7b
+#define DW_OP_breg12 0x7c
+#define DW_OP_breg13 0x7d
+#define DW_OP_breg14 0x7e
+#define DW_OP_breg15 0x7f
+#define DW_OP_breg16 0x80
+#define DW_OP_breg17 0x81
+#define DW_OP_breg18 0x82
+#define DW_OP_breg19 0x83
+#define DW_OP_breg20 0x84
+#define DW_OP_breg21 0x85
+#define DW_OP_breg22 0x86
+#define DW_OP_breg23 0x87
+#define DW_OP_breg24 0x88
+#define DW_OP_breg25 0x89
+#define DW_OP_breg26 0x8a
+#define DW_OP_breg27 0x8b
+#define DW_OP_breg28 0x8c
+#define DW_OP_breg29 0x8d
+#define DW_OP_breg30 0x8e
+#define DW_OP_breg31 0x8f
+#define DW_OP_regx 0x90
+#define DW_OP_fbreg 0x91
+#define DW_OP_bregx 0x92
+#define DW_OP_piece 0x93
+#define DW_OP_deref_size 0x94
+#define DW_OP_xderef_size 0x95
+#define DW_OP_nop 0x96
+#define DW_OP_push_object_address 0x97
+#define DW_OP_call2 0x98
+#define DW_OP_call4 0x99
+#define DW_OP_call_ref 0x9a
+#define DW_OP_form_tls_address 0x9b
+#define DW_OP_call_frame_cfa 0x9c
+#define DW_OP_bit_piece 0x9d
+#define DW_OP_lo_user 0xe0
+#define DW_OP_hi_user 0xff
+
+/*
+ * Addresses used in FDE entries in the .eh_frame section may be encoded
+ * using one of the following encodings.
+ */
+#define DW_EH_PE_absptr 0x00
+#define DW_EH_PE_omit 0xff
+#define DW_EH_PE_uleb128 0x01
+#define DW_EH_PE_udata2 0x02
+#define DW_EH_PE_udata4 0x03
+#define DW_EH_PE_udata8 0x04
+#define DW_EH_PE_sleb128 0x09
+#define DW_EH_PE_sdata2 0x0a
+#define DW_EH_PE_sdata4 0x0b
+#define DW_EH_PE_sdata8 0x0c
+#define DW_EH_PE_signed 0x09
+
+#define DW_EH_PE_pcrel 0x10
+
+/*
+ * The architecture-specific register number that contains the return
+ * address in the .debug_frame table.
+ */
+#define DWARF_ARCH_RA_REG 17
+
+#ifndef __ASSEMBLY__
+/*
+ * Read either the frame pointer (r14) or the stack pointer (r15).
+ * NOTE: this MUST be inlined.
+ */
+static __always_inline unsigned long dwarf_read_arch_reg(unsigned int reg)
+{
+ unsigned long value;
+
+ switch (reg) {
+ case 14:
+ __asm__ __volatile__("mov r14, %0\n" : "=r" (value));
+ break;
+ case 15:
+ __asm__ __volatile__("mov r15, %0\n" : "=r" (value));
+ break;
+ default:
+ BUG();
+ }
+
+ return value;
+}
+
+/**
+ * dwarf_cie - Common Information Entry
+ */
+struct dwarf_cie {
+ unsigned long length;
+ unsigned long cie_id;
+ unsigned char version;
+ const char *augmentation;
+ unsigned int code_alignment_factor;
+ int data_alignment_factor;
+
+ /* Which column in the rule table represents return addr of func. */
+ unsigned int return_address_reg;
+
+ unsigned char *initial_instructions;
+ unsigned char *instructions_end;
+
+ unsigned char encoding;
+
+ unsigned long cie_pointer;
+
+ struct list_head link;
+
+ unsigned long flags;
+#define DWARF_CIE_Z_AUGMENTATION (1 << 0)
+};
+
+/**
+ * dwarf_fde - Frame Description Entry
+ */
+struct dwarf_fde {
+ unsigned long length;
+ unsigned long cie_pointer;
+ struct dwarf_cie *cie;
+ unsigned long initial_location;
+ unsigned long address_range;
+ unsigned char *instructions;
+ unsigned char *end;
+ struct list_head link;
+};
+
+/**
+ * dwarf_frame - DWARF information for a frame in the call stack
+ */
+struct dwarf_frame {
+ struct dwarf_frame *prev, *next;
+
+ unsigned long pc;
+
+ struct dwarf_reg *regs;
+ unsigned int num_regs; /* how many regs are allocated? */
+
+ unsigned int depth; /* what level are we in the callstack? */
+
+ unsigned long cfa;
+
+ /* Valid when DW_FRAME_CFA_REG_OFFSET is set in flags */
+ unsigned int cfa_register;
+ unsigned int cfa_offset;
+
+ /* Valid when DW_FRAME_CFA_REG_EXP is set in flags */
+ unsigned char *cfa_expr;
+ unsigned int cfa_expr_len;
+
+ unsigned long flags;
+#define DWARF_FRAME_CFA_REG_OFFSET (1 << 0)
+#define DWARF_FRAME_CFA_REG_EXP (1 << 1)
+
+ unsigned long return_addr;
+};
+
+/**
+ * dwarf_reg - DWARF register
+ * @flags: Describes how to calculate the value of this register
+ */
+struct dwarf_reg {
+ unsigned long addr;
+ unsigned long flags;
+#define DWARF_REG_OFFSET (1 << 0)
+};
+
+/**
+ * dwarf_stack - a DWARF stack contains a collection of DWARF frames
+ * @depth: the number of frames in the stack
+ * @level: an array of DWARF frames, indexed by stack level
+ *
+ */
+struct dwarf_stack {
+ unsigned int depth;
+ struct dwarf_frame **level;
+};
+
+/*
+ * Call Frame instruction opcodes.
+ */
+#define DW_CFA_advance_loc 0x40
+#define DW_CFA_offset 0x80
+#define DW_CFA_restore 0xc0
+#define DW_CFA_nop 0x00
+#define DW_CFA_set_loc 0x01
+#define DW_CFA_advance_loc1 0x02
+#define DW_CFA_advance_loc2 0x03
+#define DW_CFA_advance_loc4 0x04
+#define DW_CFA_offset_extended 0x05
+#define DW_CFA_restore_extended 0x06
+#define DW_CFA_undefined 0x07
+#define DW_CFA_same_value 0x08
+#define DW_CFA_register 0x09
+#define DW_CFA_remember_state 0x0a
+#define DW_CFA_restore_state 0x0b
+#define DW_CFA_def_cfa 0x0c
+#define DW_CFA_def_cfa_register 0x0d
+#define DW_CFA_def_cfa_offset 0x0e
+#define DW_CFA_def_cfa_expression 0x0f
+#define DW_CFA_expression 0x10
+#define DW_CFA_offset_extended_sf 0x11
+#define DW_CFA_def_cfa_sf 0x12
+#define DW_CFA_def_cfa_offset_sf 0x13
+#define DW_CFA_val_offset 0x14
+#define DW_CFA_val_offset_sf 0x15
+#define DW_CFA_val_expression 0x16
+#define DW_CFA_lo_user 0x1c
+#define DW_CFA_hi_user 0x3f
+
+/*
+ * Some call frame instructions encode their operands in the opcode. We
+ * need some helper functions to extract both the opcode and operands
+ * from an instruction.
+ */
+static inline unsigned int DW_CFA_opcode(unsigned long insn)
+{
+ return (insn & 0xc0);
+}
+
+static inline unsigned int DW_CFA_operand(unsigned long insn)
+{
+ return (insn & 0x3f);
+}
+
+#define DW_EH_FRAME_CIE 0 /* .eh_frame CIE IDs are 0 */
+#define DW_CIE_ID 0xffffffff
+#define DW64_CIE_ID 0xffffffffffffffffULL
+
+/*
+ * DWARF FDE/CIE length field values.
+ */
+#define DW_EXT_LO 0xfffffff0
+#define DW_EXT_HI 0xffffffff
+#define DW_EXT_DWARF64 DW_EXT_HI
+
+extern void dwarf_unwinder_init(void);
+
+extern struct dwarf_frame *dwarf_unwind_stack(unsigned long,
+ struct dwarf_frame *);
+#endif /* __ASSEMBLY__ */
+
+#define CFI_STARTPROC .cfi_startproc
+#define CFI_ENDPROC .cfi_endproc
+#define CFI_DEF_CFA .cfi_def_cfa
+#define CFI_REGISTER .cfi_register
+#define CFI_REL_OFFSET .cfi_rel_offset
+
+#else
+
+/*
+ * Use the asm comment character to ignore the rest of the line.
+ */
+#define CFI_IGNORE !
+
+#define CFI_STARTPROC CFI_IGNORE
+#define CFI_ENDPROC CFI_IGNORE
+#define CFI_DEF_CFA CFI_IGNORE
+#define CFI_REGISTER CFI_IGNORE
+#define CFI_REL_OFFSET CFI_IGNORE
+
+#ifndef __ASSEMBLY__
+static inline void dwarf_unwinder_init(void)
+{
+}
+#endif
+
+#endif /* CONFIG_DWARF_UNWINDER */
+
+#endif /* __ASM_SH_DWARF_H */
diff --git a/arch/sh/include/asm/entry-macros.S b/arch/sh/include/asm/entry-macros.S
index 1bdd938..64fd0de 100644
--- a/arch/sh/include/asm/entry-macros.S
+++ b/arch/sh/include/asm/entry-macros.S
@@ -108,3 +108,15 @@
#else
# define PREF(x) nop
#endif
+
+ /*
+ * Macro for use within assembly. Because the DWARF unwinder
+ * needs to use the frame register to unwind the stack, we
+ * need to setup r14 with the value of the stack pointer as
+ * the return address is usually on the stack somewhere.
+ */
+ .macro setup_frame_reg
+#ifdef CONFIG_DWARF_UNWINDER
+ mov r15, r14
+#endif
+ .endm
diff --git a/arch/sh/include/asm/hardirq.h b/arch/sh/include/asm/hardirq.h
index 715ee23..a5be4af 100644
--- a/arch/sh/include/asm/hardirq.h
+++ b/arch/sh/include/asm/hardirq.h
@@ -1,16 +1,9 @@
#ifndef __ASM_SH_HARDIRQ_H
#define __ASM_SH_HARDIRQ_H
-#include <linux/threads.h>
-#include <linux/irq.h>
-
-/* entry.S is sensitive to the offsets of these fields */
-typedef struct {
- unsigned int __softirq_pending;
-} ____cacheline_aligned irq_cpustat_t;
-
-#include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */
-
extern void ack_bad_irq(unsigned int irq);
+#define ack_bad_irq ack_bad_irq
+
+#include <asm-generic/hardirq.h>
#endif /* __ASM_SH_HARDIRQ_H */
diff --git a/arch/sh/include/asm/sections.h b/arch/sh/include/asm/sections.h
index 01a4076..a78701d 100644
--- a/arch/sh/include/asm/sections.h
+++ b/arch/sh/include/asm/sections.h
@@ -7,6 +7,7 @@ extern void __nosave_begin, __nosave_end;
extern long __machvec_start, __machvec_end;
extern char __uncached_start, __uncached_end;
extern char _ebss[];
+extern char __start_eh_frame[], __stop_eh_frame[];
#endif /* __ASM_SH_SECTIONS_H */
diff --git a/arch/sh/include/asm/stacktrace.h b/arch/sh/include/asm/stacktrace.h
new file mode 100644
index 0000000..7970182
--- /dev/null
+++ b/arch/sh/include/asm/stacktrace.h
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2009 Matt Fleming
+ *
+ * Based on:
+ * The x86 implementation - arch/x86/include/asm/stacktrace.h
+ */
+#ifndef _ASM_SH_STACKTRACE_H
+#define _ASM_SH_STACKTRACE_H
+
+/* Generic stack tracer with callbacks */
+
+struct stacktrace_ops {
+ void (*warning)(void *data, char *msg);
+ /* msg must contain %s for the symbol */
+ void (*warning_symbol)(void *data, char *msg, unsigned long symbol);
+ void (*address)(void *data, unsigned long address, int reliable);
+ /* On negative return stop dumping */
+ int (*stack)(void *data, char *name);
+};
+
+void dump_trace(struct task_struct *tsk, struct pt_regs *regs,
+ unsigned long *stack,
+ const struct stacktrace_ops *ops, void *data);
+
+#endif /* _ASM_SH_STACKTRACE_H */
diff --git a/arch/sh/include/asm/unwinder.h b/arch/sh/include/asm/unwinder.h
new file mode 100644
index 0000000..3dc5514
--- /dev/null
+++ b/arch/sh/include/asm/unwinder.h
@@ -0,0 +1,25 @@
+#ifndef _LINUX_UNWINDER_H
+#define _LINUX_UNWINDER_H
+
+#include <asm/stacktrace.h>
+
+struct unwinder {
+ const char *name;
+ struct list_head list;
+ int rating;
+ void (*dump)(struct task_struct *, struct pt_regs *,
+ unsigned long *, const struct stacktrace_ops *, void *);
+};
+
+extern int unwinder_init(void);
+extern int unwinder_register(struct unwinder *);
+
+extern void unwind_stack(struct task_struct *, struct pt_regs *,
+ unsigned long *, const struct stacktrace_ops *,
+ void *);
+
+extern void stack_reader_dump(struct task_struct *, struct pt_regs *,
+ unsigned long *, const struct stacktrace_ops *,
+ void *);
+
+#endif /* _LINUX_UNWINDER_H */
diff --git a/arch/sh/include/asm/vmlinux.lds.h b/arch/sh/include/asm/vmlinux.lds.h
new file mode 100644
index 0000000..244ec4a
--- /dev/null
+++ b/arch/sh/include/asm/vmlinux.lds.h
@@ -0,0 +1,17 @@
+#ifndef __ASM_SH_VMLINUX_LDS_H
+#define __ASM_SH_VMLINUX_LDS_H
+
+#include <asm-generic/vmlinux.lds.h>
+
+#ifdef CONFIG_DWARF_UNWINDER
+#define DWARF_EH_FRAME \
+ .eh_frame : AT(ADDR(.eh_frame) - LOAD_OFFSET) { \
+ VMLINUX_SYMBOL(__start_eh_frame) = .; \
+ *(.eh_frame) \
+ VMLINUX_SYMBOL(__stop_eh_frame) = .; \
+ }
+#else
+#define DWARF_EH_FRAME
+#endif
+
+#endif /* __ASM_SH_VMLINUX_LDS_H */
diff --git a/arch/sh/include/cpu-sh4/cpu/dma-sh4a.h b/arch/sh/include/cpu-sh4/cpu/dma-sh4a.h
index 0ed5178..f0886bc 100644
--- a/arch/sh/include/cpu-sh4/cpu/dma-sh4a.h
+++ b/arch/sh/include/cpu-sh4/cpu/dma-sh4a.h
@@ -16,7 +16,8 @@
#define DMAE0_IRQ 38
#define SH_DMAC_BASE0 0xFF608020
#define SH_DMARS_BASE 0xFF609000
-#elif defined(CONFIG_CPU_SUBTYPE_SH7723)
+#elif defined(CONFIG_CPU_SUBTYPE_SH7723) || \
+ defined(CONFIG_CPU_SUBTYPE_SH7724)
#define DMTE0_IRQ 48 /* DMAC0A*/
#define DMTE4_IRQ 40 /* DMAC0B */
#define DMTE6_IRQ 42
diff --git a/arch/sh/include/mach-common/mach/migor.h b/arch/sh/include/mach-common/mach/migor.h
deleted file mode 100644
index e451f02..0000000
--- a/arch/sh/include/mach-common/mach/migor.h
+++ /dev/null
@@ -1,64 +0,0 @@
-#ifndef __ASM_SH_MIGOR_H
-#define __ASM_SH_MIGOR_H
-
-/*
- * linux/include/asm-sh/migor.h
- *
- * Copyright (C) 2008 Renesas Solutions
- *
- * Portions Copyright (C) 2007 Nobuhiro Iwamatsu
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- */
-#include <asm/addrspace.h>
-
-/* GPIO */
-#define PORT_PACR 0xa4050100
-#define PORT_PDCR 0xa4050106
-#define PORT_PECR 0xa4050108
-#define PORT_PHCR 0xa405010e
-#define PORT_PJCR 0xa4050110
-#define PORT_PKCR 0xa4050112
-#define PORT_PLCR 0xa4050114
-#define PORT_PMCR 0xa4050116
-#define PORT_PRCR 0xa405011c
-#define PORT_PTCR 0xa4050140
-#define PORT_PUCR 0xa4050142
-#define PORT_PVCR 0xa4050144
-#define PORT_PWCR 0xa4050146
-#define PORT_PXCR 0xa4050148
-#define PORT_PYCR 0xa405014a
-#define PORT_PZCR 0xa405014c
-#define PORT_PADR 0xa4050120
-#define PORT_PHDR 0xa405012e
-#define PORT_PTDR 0xa4050160
-#define PORT_PWDR 0xa4050166
-
-#define PORT_HIZCRA 0xa4050158
-#define PORT_HIZCRC 0xa405015c
-
-#define PORT_MSELCRB 0xa4050182
-
-#define PORT_PSELA 0xa405014e
-#define PORT_PSELB 0xa4050150
-#define PORT_PSELC 0xa4050152
-#define PORT_PSELD 0xa4050154
-#define PORT_PSELE 0xa4050156
-
-#define PORT_HIZCRA 0xa4050158
-#define PORT_HIZCRB 0xa405015a
-#define PORT_HIZCRC 0xa405015c
-
-#define BSC_CS4BCR 0xfec10010
-#define BSC_CS6ABCR 0xfec1001c
-#define BSC_CS4WCR 0xfec10030
-
-#include <video/sh_mobile_lcdc.h>
-
-int migor_lcd_qvga_setup(void *board_data, void *sys_ops_handle,
- struct sh_mobile_lcdc_sys_bus_ops *sys_ops);
-
-#endif /* __ASM_SH_MIGOR_H */
diff --git a/arch/sh/include/mach-common/romimage.h b/arch/sh/include/mach-common/mach/romimage.h
index 267e241..267e241 100644
--- a/arch/sh/include/mach-common/romimage.h
+++ b/arch/sh/include/mach-common/mach/romimage.h
diff --git a/arch/sh/include/mach-kfr2r09/mach/kfr2r09.h b/arch/sh/include/mach-kfr2r09/mach/kfr2r09.h
new file mode 100644
index 0000000..174374e
--- /dev/null
+++ b/arch/sh/include/mach-kfr2r09/mach/kfr2r09.h
@@ -0,0 +1,21 @@
+#ifndef __ASM_SH_KFR2R09_H
+#define __ASM_SH_KFR2R09_H
+
+#include <video/sh_mobile_lcdc.h>
+
+#ifdef CONFIG_FB_SH_MOBILE_LCDC
+void kfr2r09_lcd_on(void *board_data);
+void kfr2r09_lcd_off(void *board_data);
+int kfr2r09_lcd_setup(void *board_data, void *sys_ops_handle,
+ struct sh_mobile_lcdc_sys_bus_ops *sys_ops);
+#else
+static inline void kfr2r09_lcd_on(void *board_data) {}
+static inline void kfr2r09_lcd_off(void *board_data) {}
+static inline int kfr2r09_lcd_setup(void *board_data, void *sys_ops_handle,
+ struct sh_mobile_lcdc_sys_bus_ops *sys_ops)
+{
+ return -ENODEV;
+}
+#endif
+
+#endif /* __ASM_SH_KFR2R09_H */
diff --git a/arch/sh/include/mach-kfr2r09/partner-jet-setup.txt b/arch/sh/include/mach-kfr2r09/mach/partner-jet-setup.txt
index 9c85088..9c85088 100644
--- a/arch/sh/include/mach-kfr2r09/partner-jet-setup.txt
+++ b/arch/sh/include/mach-kfr2r09/mach/partner-jet-setup.txt
diff --git a/arch/sh/include/mach-kfr2r09/romimage.h b/arch/sh/include/mach-kfr2r09/mach/romimage.h
index f5aa8e1..f5aa8e1 100644
--- a/arch/sh/include/mach-kfr2r09/romimage.h
+++ b/arch/sh/include/mach-kfr2r09/mach/romimage.h
diff --git a/arch/sh/include/mach-migor/mach/migor.h b/arch/sh/include/mach-migor/mach/migor.h
new file mode 100644
index 0000000..cee6cb8
--- /dev/null
+++ b/arch/sh/include/mach-migor/mach/migor.h
@@ -0,0 +1,14 @@
+#ifndef __ASM_SH_MIGOR_H
+#define __ASM_SH_MIGOR_H
+
+#define PORT_MSELCRB 0xa4050182
+#define BSC_CS4BCR 0xfec10010
+#define BSC_CS6ABCR 0xfec1001c
+#define BSC_CS4WCR 0xfec10030
+
+#include <video/sh_mobile_lcdc.h>
+
+int migor_lcd_qvga_setup(void *board_data, void *sys_ops_handle,
+ struct sh_mobile_lcdc_sys_bus_ops *sys_ops);
+
+#endif /* __ASM_SH_MIGOR_H */
diff --git a/arch/sh/kernel/Makefile_32 b/arch/sh/kernel/Makefile_32
index 94ed99b..f2245eb 100644
--- a/arch/sh/kernel/Makefile_32
+++ b/arch/sh/kernel/Makefile_32
@@ -9,10 +9,10 @@ ifdef CONFIG_FUNCTION_TRACER
CFLAGS_REMOVE_ftrace.o = -pg
endif
-obj-y := debugtraps.o idle.o io.o io_generic.o irq.o \
+obj-y := debugtraps.o dumpstack.o idle.o io.o io_generic.o irq.o \
machvec.o process_32.o ptrace_32.o setup.o signal_32.o \
- sys_sh.o sys_sh32.o syscalls_32.o time.o topology.o \
- traps.o traps_32.o
+ sys_sh.o sys_sh32.o syscalls_32.o time.o topology.o \
+ traps.o traps_32.o unwinder.o
obj-y += cpu/
obj-$(CONFIG_VSYSCALL) += vsyscall/
@@ -33,6 +33,7 @@ obj-$(CONFIG_FTRACE_SYSCALLS) += ftrace.o
obj-$(CONFIG_FUNCTION_GRAPH_TRACER) += ftrace.o
obj-$(CONFIG_DUMP_CODE) += disassemble.o
obj-$(CONFIG_HIBERNATION) += swsusp.o
+obj-$(CONFIG_DWARF_UNWINDER) += dwarf.o
obj-$(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST) += localtimer.o
diff --git a/arch/sh/kernel/Makefile_64 b/arch/sh/kernel/Makefile_64
index 67b9f6c..639ee51 100644
--- a/arch/sh/kernel/Makefile_64
+++ b/arch/sh/kernel/Makefile_64
@@ -2,7 +2,7 @@ extra-y := head_64.o init_task.o vmlinux.lds
obj-y := debugtraps.o idle.o io.o io_generic.o irq.o machvec.o process_64.o \
ptrace_64.o setup.o signal_64.o sys_sh.o sys_sh64.o \
- syscalls_64.o time.o topology.o traps.o traps_64.o
+ syscalls_64.o time.o topology.o traps.o traps_64.o unwinder.o
obj-y += cpu/
obj-$(CONFIG_SMP) += smp.o
@@ -13,6 +13,7 @@ obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
obj-$(CONFIG_STACKTRACE) += stacktrace.o
obj-$(CONFIG_IO_TRAPPED) += io_trapped.o
obj-$(CONFIG_GENERIC_GPIO) += gpio.o
+obj-$(CONFIG_DWARF_UNWINDER) += dwarf.o
obj-$(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST) += localtimer.o
diff --git a/arch/sh/kernel/cpu/init.c b/arch/sh/kernel/cpu/init.c
index ad85421..d40b9db 100644
--- a/arch/sh/kernel/cpu/init.c
+++ b/arch/sh/kernel/cpu/init.c
@@ -3,7 +3,7 @@
*
* CPU init code
*
- * Copyright (C) 2002 - 2007 Paul Mundt
+ * Copyright (C) 2002 - 2009 Paul Mundt
* Copyright (C) 2003 Richard Curnow
*
* This file is subject to the terms and conditions of the GNU General Public
@@ -62,6 +62,37 @@ static void __init speculative_execution_init(void)
#define speculative_execution_init() do { } while (0)
#endif
+#ifdef CONFIG_CPU_SH4A
+#define EXPMASK 0xff2f0004
+#define EXPMASK_RTEDS (1 << 0)
+#define EXPMASK_BRDSSLP (1 << 1)
+#define EXPMASK_MMCAW (1 << 4)
+
+static void __init expmask_init(void)
+{
+ unsigned long expmask = __raw_readl(EXPMASK);
+
+ /*
+ * Future proofing.
+ *
+ * Disable support for slottable sleep instruction
+ * and non-nop instructions in the rte delay slot.
+ */
+ expmask &= ~(EXPMASK_RTEDS | EXPMASK_BRDSSLP);
+
+ /*
+ * Enable associative writes to the memory-mapped cache array
+ * until the cache flush ops have been rewritten.
+ */
+ expmask |= EXPMASK_MMCAW;
+
+ __raw_writel(expmask, EXPMASK);
+ ctrl_barrier();
+}
+#else
+#define expmask_init() do { } while (0)
+#endif
+
/* 2nd-level cache init */
void __uses_jump_to_uncached __attribute__ ((weak)) l2_cache_init(void)
{
@@ -321,4 +352,5 @@ asmlinkage void __init sh_cpu_init(void)
#endif
speculative_execution_init();
+ expmask_init();
}
diff --git a/arch/sh/kernel/cpu/sh2/entry.S b/arch/sh/kernel/cpu/sh2/entry.S
index becc54c45..c8a4331 100644
--- a/arch/sh/kernel/cpu/sh2/entry.S
+++ b/arch/sh/kernel/cpu/sh2/entry.S
@@ -227,8 +227,9 @@ ENTRY(sh_bios_handler)
mov.l @r15+, r14
add #8,r15
lds.l @r15+, pr
+ mov.l @r15+,r15
rte
- mov.l @r15+,r15
+ nop
.align 2
1: .long gdb_vbr_vector
#endif /* CONFIG_SH_STANDARD_BIOS */
diff --git a/arch/sh/kernel/cpu/sh2a/entry.S b/arch/sh/kernel/cpu/sh2a/entry.S
index ab3903e..222742d 100644
--- a/arch/sh/kernel/cpu/sh2a/entry.S
+++ b/arch/sh/kernel/cpu/sh2a/entry.S
@@ -176,8 +176,9 @@ ENTRY(sh_bios_handler)
movml.l @r15+,r14
add #8,r15
lds.l @r15+, pr
+ mov.l @r15+,r15
rte
- mov.l @r15+,r15
+ nop
.align 2
1: .long gdb_vbr_vector
#endif /* CONFIG_SH_STANDARD_BIOS */
diff --git a/arch/sh/kernel/cpu/sh3/entry.S b/arch/sh/kernel/cpu/sh3/entry.S
index 3cb531f..67ad646 100644
--- a/arch/sh/kernel/cpu/sh3/entry.S
+++ b/arch/sh/kernel/cpu/sh3/entry.S
@@ -137,6 +137,7 @@ ENTRY(tlb_protection_violation_store)
mov #1, r5
call_dpf:
+ setup_frame_reg
mov.l 1f, r0
mov r5, r8
mov.l @r0, r6
diff --git a/arch/sh/kernel/cpu/shmobile/sleep.S b/arch/sh/kernel/cpu/shmobile/sleep.S
index 5d888ef..baf2d7d 100644
--- a/arch/sh/kernel/cpu/shmobile/sleep.S
+++ b/arch/sh/kernel/cpu/shmobile/sleep.S
@@ -26,8 +26,30 @@ ENTRY(sh_mobile_standby)
tst #SUSP_SH_SF, r0
bt skip_set_sf
+#ifdef CONFIG_CPU_SUBTYPE_SH7724
+ /* DBSC: put memory in self-refresh mode */
- /* SDRAM: disable power down and put in self-refresh mode */
+ mov.l dben_reg, r4
+ mov.l dben_data0, r1
+ mov.l r1, @r4
+
+ mov.l dbrfpdn0_reg, r4
+ mov.l dbrfpdn0_data0, r1
+ mov.l r1, @r4
+
+ mov.l dbcmdcnt_reg, r4
+ mov.l dbcmdcnt_data0, r1
+ mov.l r1, @r4
+
+ mov.l dbcmdcnt_reg, r4
+ mov.l dbcmdcnt_data1, r1
+ mov.l r1, @r4
+
+ mov.l dbrfpdn0_reg, r4
+ mov.l dbrfpdn0_data1, r1
+ mov.l r1, @r4
+#else
+ /* SBSC: disable power down and put in self-refresh mode */
mov.l 1f, r4
mov.l 2f, r1
mov.l @r4, r2
@@ -35,6 +57,7 @@ ENTRY(sh_mobile_standby)
mov.l 3f, r3
and r3, r2
mov.l r2, @r4
+#endif
skip_set_sf:
tst #SUSP_SH_SLEEP, r0
@@ -84,7 +107,36 @@ done_sleep:
tst #SUSP_SH_SF, r0
bt skip_restore_sf
- /* SDRAM: set auto-refresh mode */
+#ifdef CONFIG_CPU_SUBTYPE_SH7724
+ /* DBSC: put memory in auto-refresh mode */
+
+ mov.l dbrfpdn0_reg, r4
+ mov.l dbrfpdn0_data0, r1
+ mov.l r1, @r4
+
+ /* sleep 140 ns */
+ nop
+ nop
+ nop
+ nop
+
+ mov.l dbcmdcnt_reg, r4
+ mov.l dbcmdcnt_data0, r1
+ mov.l r1, @r4
+
+ mov.l dbcmdcnt_reg, r4
+ mov.l dbcmdcnt_data1, r1
+ mov.l r1, @r4
+
+ mov.l dben_reg, r4
+ mov.l dben_data1, r1
+ mov.l r1, @r4
+
+ mov.l dbrfpdn0_reg, r4
+ mov.l dbrfpdn0_data2, r1
+ mov.l r1, @r4
+#else
+ /* SBSC: set auto-refresh mode */
mov.l 1f, r4
mov.l @r4, r2
mov.l 4f, r3
@@ -98,15 +150,29 @@ done_sleep:
add r4, r3
or r2, r3
mov.l r3, @r1
+#endif
skip_restore_sf:
rts
nop
.balign 4
+#ifdef CONFIG_CPU_SUBTYPE_SH7724
+dben_reg: .long 0xfd000010 /* DBEN */
+dben_data0: .long 0
+dben_data1: .long 1
+dbrfpdn0_reg: .long 0xfd000040 /* DBRFPDN0 */
+dbrfpdn0_data0: .long 0
+dbrfpdn0_data1: .long 1
+dbrfpdn0_data2: .long 0x00010000
+dbcmdcnt_reg: .long 0xfd000014 /* DBCMDCNT */
+dbcmdcnt_data0: .long 2
+dbcmdcnt_data1: .long 4
+#else
1: .long 0xfe400008 /* SDCR0 */
2: .long 0x00000400
3: .long 0xffff7fff
4: .long 0xfffffbff
+#endif
5: .long 0xa4150020 /* STBCR */
6: .long 0xfe40001c /* RTCOR */
7: .long 0xfe400018 /* RTCNT */
diff --git a/arch/sh/kernel/dumpstack.c b/arch/sh/kernel/dumpstack.c
new file mode 100644
index 0000000..6f5ad15
--- /dev/null
+++ b/arch/sh/kernel/dumpstack.c
@@ -0,0 +1,123 @@
+/*
+ * Copyright (C) 1991, 1992 Linus Torvalds
+ * Copyright (C) 2000, 2001, 2002 Andi Kleen, SuSE Labs
+ * Copyright (C) 2009 Matt Fleming
+ */
+#include <linux/kallsyms.h>
+#include <linux/ftrace.h>
+#include <linux/debug_locks.h>
+#include <asm/unwinder.h>
+#include <asm/stacktrace.h>
+
+void printk_address(unsigned long address, int reliable)
+{
+ printk(" [<%p>] %s%pS\n", (void *) address,
+ reliable ? "" : "? ", (void *) address);
+}
+
+#ifdef CONFIG_FUNCTION_GRAPH_TRACER
+static void
+print_ftrace_graph_addr(unsigned long addr, void *data,
+ const struct stacktrace_ops *ops,
+ struct thread_info *tinfo, int *graph)
+{
+ struct task_struct *task = tinfo->task;
+ unsigned long ret_addr;
+ int index = task->curr_ret_stack;
+
+ if (addr != (unsigned long)return_to_handler)
+ return;
+
+ if (!task->ret_stack || index < *graph)
+ return;
+
+ index -= *graph;
+ ret_addr = task->ret_stack[index].ret;
+
+ ops->address(data, ret_addr, 1);
+
+ (*graph)++;
+}
+#else
+static inline void
+print_ftrace_graph_addr(unsigned long addr, void *data,
+ const struct stacktrace_ops *ops,
+ struct thread_info *tinfo, int *graph)
+{ }
+#endif
+
+void
+stack_reader_dump(struct task_struct *task, struct pt_regs *regs,
+ unsigned long *sp, const struct stacktrace_ops *ops,
+ void *data)
+{
+ struct thread_info *context;
+ int graph = 0;
+
+ context = (struct thread_info *)
+ ((unsigned long)sp & (~(THREAD_SIZE - 1)));
+
+ while (!kstack_end(sp)) {
+ unsigned long addr = *sp++;
+
+ if (__kernel_text_address(addr)) {
+ ops->address(data, addr, 1);
+
+ print_ftrace_graph_addr(addr, data, ops,
+ context, &graph);
+ }
+ }
+}
+
+static void
+print_trace_warning_symbol(void *data, char *msg, unsigned long symbol)
+{
+ printk(data);
+ print_symbol(msg, symbol);
+ printk("\n");
+}
+
+static void print_trace_warning(void *data, char *msg)
+{
+ printk("%s%s\n", (char *)data, msg);
+}
+
+static int print_trace_stack(void *data, char *name)
+{
+ printk("%s <%s> ", (char *)data, name);
+ return 0;
+}
+
+/*
+ * Print one address/symbol entries per line.
+ */
+static void print_trace_address(void *data, unsigned long addr, int reliable)
+{
+ printk(data);
+ printk_address(addr, reliable);
+}
+
+static const struct stacktrace_ops print_trace_ops = {
+ .warning = print_trace_warning,
+ .warning_symbol = print_trace_warning_symbol,
+ .stack = print_trace_stack,
+ .address = print_trace_address,
+};
+
+void show_trace(struct task_struct *tsk, unsigned long *sp,
+ struct pt_regs *regs)
+{
+ if (regs && user_mode(regs))
+ return;
+
+ printk("\nCall trace:\n");
+
+ unwind_stack(tsk, regs, sp, &print_trace_ops, "");
+
+ printk("\n");
+
+ if (!tsk)
+ tsk = current;
+
+ debug_show_held_locks(tsk);
+}
diff --git a/arch/sh/kernel/dwarf.c b/arch/sh/kernel/dwarf.c
new file mode 100644
index 0000000..c6c5764
--- /dev/null
+++ b/arch/sh/kernel/dwarf.c
@@ -0,0 +1,902 @@
+/*
+ * Copyright (C) 2009 Matt Fleming <matt@console-pimps.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * This is an implementation of a DWARF unwinder. Its main purpose is
+ * for generating stacktrace information. Based on the DWARF 3
+ * specification from http://www.dwarfstd.org.
+ *
+ * TODO:
+ * - DWARF64 doesn't work.
+ */
+
+/* #define DEBUG */
+#include <linux/kernel.h>
+#include <linux/io.h>
+#include <linux/list.h>
+#include <linux/mm.h>
+#include <asm/dwarf.h>
+#include <asm/unwinder.h>
+#include <asm/sections.h>
+#include <asm/unaligned.h>
+#include <asm/dwarf.h>
+#include <asm/stacktrace.h>
+
+static LIST_HEAD(dwarf_cie_list);
+DEFINE_SPINLOCK(dwarf_cie_lock);
+
+static LIST_HEAD(dwarf_fde_list);
+DEFINE_SPINLOCK(dwarf_fde_lock);
+
+static struct dwarf_cie *cached_cie;
+
+/*
+ * Figure out whether we need to allocate some dwarf registers. If dwarf
+ * registers have already been allocated then we may need to realloc
+ * them. "reg" is a register number that we need to be able to access
+ * after this call.
+ *
+ * Register numbers start at zero, therefore we need to allocate space
+ * for "reg" + 1 registers.
+ */
+static void dwarf_frame_alloc_regs(struct dwarf_frame *frame,
+ unsigned int reg)
+{
+ struct dwarf_reg *regs;
+ unsigned int num_regs = reg + 1;
+ size_t new_size;
+ size_t old_size;
+
+ new_size = num_regs * sizeof(*regs);
+ old_size = frame->num_regs * sizeof(*regs);
+
+ /* Fast path: don't allocate any regs if we've already got enough. */
+ if (frame->num_regs >= num_regs)
+ return;
+
+ regs = kzalloc(new_size, GFP_ATOMIC);
+ if (!regs) {
+ printk(KERN_WARNING "Unable to allocate DWARF registers\n");
+ /*
+ * Let's just bomb hard here, we have no way to
+ * gracefully recover.
+ */
+ BUG();
+ }
+
+ if (frame->regs) {
+ memcpy(regs, frame->regs, old_size);
+ kfree(frame->regs);
+ }
+
+ frame->regs = regs;
+ frame->num_regs = num_regs;
+}
+
+/**
+ * dwarf_read_addr - read dwarf data
+ * @src: source address of data
+ * @dst: destination address to store the data to
+ *
+ * Read 'n' bytes from @src, where 'n' is the size of an address on
+ * the native machine. We return the number of bytes read, which
+ * should always be 'n'. We also have to be careful when reading
+ * from @src and writing to @dst, because they can be arbitrarily
+ * aligned. Return 'n' - the number of bytes read.
+ */
+static inline int dwarf_read_addr(unsigned long *src, unsigned long *dst)
+{
+ u32 val = get_unaligned(src);
+ put_unaligned(val, dst);
+ return sizeof(unsigned long *);
+}
+
+/**
+ * dwarf_read_uleb128 - read unsigned LEB128 data
+ * @addr: the address where the ULEB128 data is stored
+ * @ret: address to store the result
+ *
+ * Decode an unsigned LEB128 encoded datum. The algorithm is taken
+ * from Appendix C of the DWARF 3 spec. For information on the
+ * encodings refer to section "7.6 - Variable Length Data". Return
+ * the number of bytes read.
+ */
+static inline unsigned long dwarf_read_uleb128(char *addr, unsigned int *ret)
+{
+ unsigned int result;
+ unsigned char byte;
+ int shift, count;
+
+ result = 0;
+ shift = 0;
+ count = 0;
+
+ while (1) {
+ byte = __raw_readb(addr);
+ addr++;
+ count++;
+
+ result |= (byte & 0x7f) << shift;
+ shift += 7;
+
+ if (!(byte & 0x80))
+ break;
+ }
+
+ *ret = result;
+
+ return count;
+}
+
+/**
+ * dwarf_read_leb128 - read signed LEB128 data
+ * @addr: the address of the LEB128 encoded data
+ * @ret: address to store the result
+ *
+ * Decode signed LEB128 data. The algorithm is taken from Appendix
+ * C of the DWARF 3 spec. Return the number of bytes read.
+ */
+static inline unsigned long dwarf_read_leb128(char *addr, int *ret)
+{
+ unsigned char byte;
+ int result, shift;
+ int num_bits;
+ int count;
+
+ result = 0;
+ shift = 0;
+ count = 0;
+
+ while (1) {
+ byte = __raw_readb(addr);
+ addr++;
+ result |= (byte & 0x7f) << shift;
+ shift += 7;
+ count++;
+
+ if (!(byte & 0x80))
+ break;
+ }
+
+ /* The number of bits in a signed integer. */
+ num_bits = 8 * sizeof(result);
+
+ if ((shift < num_bits) && (byte & 0x40))
+ result |= (-1 << shift);
+
+ *ret = result;
+
+ return count;
+}
+
+/**
+ * dwarf_read_encoded_value - return the decoded value at @addr
+ * @addr: the address of the encoded value
+ * @val: where to write the decoded value
+ * @encoding: the encoding with which we can decode @addr
+ *
+ * GCC emits encoded address in the .eh_frame FDE entries. Decode
+ * the value at @addr using @encoding. The decoded value is written
+ * to @val and the number of bytes read is returned.
+ */
+static int dwarf_read_encoded_value(char *addr, unsigned long *val,
+ char encoding)
+{
+ unsigned long decoded_addr = 0;
+ int count = 0;
+
+ switch (encoding & 0x70) {
+ case DW_EH_PE_absptr:
+ break;
+ case DW_EH_PE_pcrel:
+ decoded_addr = (unsigned long)addr;
+ break;
+ default:
+ pr_debug("encoding=0x%x\n", (encoding & 0x70));
+ BUG();
+ }
+
+ if ((encoding & 0x07) == 0x00)
+ encoding |= DW_EH_PE_udata4;
+
+ switch (encoding & 0x0f) {
+ case DW_EH_PE_sdata4:
+ case DW_EH_PE_udata4:
+ count += 4;
+ decoded_addr += get_unaligned((u32 *)addr);
+ __raw_writel(decoded_addr, val);
+ break;
+ default:
+ pr_debug("encoding=0x%x\n", encoding);
+ BUG();
+ }
+
+ return count;
+}
+
+/**
+ * dwarf_entry_len - return the length of an FDE or CIE
+ * @addr: the address of the entry
+ * @len: the length of the entry
+ *
+ * Read the initial_length field of the entry and store the size of
+ * the entry in @len. We return the number of bytes read. Return a
+ * count of 0 on error.
+ */
+static inline int dwarf_entry_len(char *addr, unsigned long *len)
+{
+ u32 initial_len;
+ int count;
+
+ initial_len = get_unaligned((u32 *)addr);
+ count = 4;
+
+ /*
+ * An initial length field value in the range DW_LEN_EXT_LO -
+ * DW_LEN_EXT_HI indicates an extension, and should not be
+ * interpreted as a length. The only extension that we currently
+ * understand is the use of DWARF64 addresses.
+ */
+ if (initial_len >= DW_EXT_LO && initial_len <= DW_EXT_HI) {
+ /*
+ * The 64-bit length field immediately follows the
+ * compulsory 32-bit length field.
+ */
+ if (initial_len == DW_EXT_DWARF64) {
+ *len = get_unaligned((u64 *)addr + 4);
+ count = 12;
+ } else {
+ printk(KERN_WARNING "Unknown DWARF extension\n");
+ count = 0;
+ }
+ } else
+ *len = initial_len;
+
+ return count;
+}
+
+/**
+ * dwarf_lookup_cie - locate the cie
+ * @cie_ptr: pointer to help with lookup
+ */
+static struct dwarf_cie *dwarf_lookup_cie(unsigned long cie_ptr)
+{
+ struct dwarf_cie *cie, *n;
+ unsigned long flags;
+
+ spin_lock_irqsave(&dwarf_cie_lock, flags);
+
+ /*
+ * We've cached the last CIE we looked up because chances are
+ * that the FDE wants this CIE.
+ */
+ if (cached_cie && cached_cie->cie_pointer == cie_ptr) {
+ cie = cached_cie;
+ goto out;
+ }
+
+ list_for_each_entry_safe(cie, n, &dwarf_cie_list, link) {
+ if (cie->cie_pointer == cie_ptr) {
+ cached_cie = cie;
+ break;
+ }
+ }
+
+ /* Couldn't find the entry in the list. */
+ if (&cie->link == &dwarf_cie_list)
+ cie = NULL;
+out:
+ spin_unlock_irqrestore(&dwarf_cie_lock, flags);
+ return cie;
+}
+
+/**
+ * dwarf_lookup_fde - locate the FDE that covers pc
+ * @pc: the program counter
+ */
+struct dwarf_fde *dwarf_lookup_fde(unsigned long pc)
+{
+ unsigned long flags;
+ struct dwarf_fde *fde, *n;
+
+ spin_lock_irqsave(&dwarf_fde_lock, flags);
+ list_for_each_entry_safe(fde, n, &dwarf_fde_list, link) {
+ unsigned long start, end;
+
+ start = fde->initial_location;
+ end = fde->initial_location + fde->address_range;
+
+ if (pc >= start && pc < end)
+ break;
+ }
+
+ /* Couldn't find the entry in the list. */
+ if (&fde->link == &dwarf_fde_list)
+ fde = NULL;
+
+ spin_unlock_irqrestore(&dwarf_fde_lock, flags);
+
+ return fde;
+}
+
+/**
+ * dwarf_cfa_execute_insns - execute instructions to calculate a CFA
+ * @insn_start: address of the first instruction
+ * @insn_end: address of the last instruction
+ * @cie: the CIE for this function
+ * @fde: the FDE for this function
+ * @frame: the instructions calculate the CFA for this frame
+ * @pc: the program counter of the address we're interested in
+ * @define_ra: keep executing insns until the return addr reg is defined?
+ *
+ * Execute the Call Frame instruction sequence starting at
+ * @insn_start and ending at @insn_end. The instructions describe
+ * how to calculate the Canonical Frame Address of a stackframe.
+ * Store the results in @frame.
+ */
+static int dwarf_cfa_execute_insns(unsigned char *insn_start,
+ unsigned char *insn_end,
+ struct dwarf_cie *cie,
+ struct dwarf_fde *fde,
+ struct dwarf_frame *frame,
+ unsigned long pc,
+ bool define_ra)
+{
+ unsigned char insn;
+ unsigned char *current_insn;
+ unsigned int count, delta, reg, expr_len, offset;
+ bool seen_ra_reg;
+
+ current_insn = insn_start;
+
+ /*
+ * If we're executing instructions for the dwarf_unwind_stack()
+ * FDE we need to keep executing instructions until the value of
+ * DWARF_ARCH_RA_REG is defined. See the comment in
+ * dwarf_unwind_stack() for more details.
+ */
+ if (define_ra)
+ seen_ra_reg = false;
+ else
+ seen_ra_reg = true;
+
+ while (current_insn < insn_end && (frame->pc <= pc || !seen_ra_reg) ) {
+ insn = __raw_readb(current_insn++);
+
+ if (!seen_ra_reg) {
+ if (frame->num_regs >= DWARF_ARCH_RA_REG &&
+ frame->regs[DWARF_ARCH_RA_REG].flags)
+ seen_ra_reg = true;
+ }
+
+ /*
+ * Firstly, handle the opcodes that embed their operands
+ * in the instructions.
+ */
+ switch (DW_CFA_opcode(insn)) {
+ case DW_CFA_advance_loc:
+ delta = DW_CFA_operand(insn);
+ delta *= cie->code_alignment_factor;
+ frame->pc += delta;
+ continue;
+ /* NOTREACHED */
+ case DW_CFA_offset:
+ reg = DW_CFA_operand(insn);
+ count = dwarf_read_uleb128(current_insn, &offset);
+ current_insn += count;
+ offset *= cie->data_alignment_factor;
+ dwarf_frame_alloc_regs(frame, reg);
+ frame->regs[reg].addr = offset;
+ frame->regs[reg].flags |= DWARF_REG_OFFSET;
+ continue;
+ /* NOTREACHED */
+ case DW_CFA_restore:
+ reg = DW_CFA_operand(insn);
+ continue;
+ /* NOTREACHED */
+ }
+
+ /*
+ * Secondly, handle the opcodes that don't embed their
+ * operands in the instruction.
+ */
+ switch (insn) {
+ case DW_CFA_nop:
+ continue;
+ case DW_CFA_advance_loc1:
+ delta = *current_insn++;
+ frame->pc += delta * cie->code_alignment_factor;
+ break;
+ case DW_CFA_advance_loc2:
+ delta = get_unaligned((u16 *)current_insn);
+ current_insn += 2;
+ frame->pc += delta * cie->code_alignment_factor;
+ break;
+ case DW_CFA_advance_loc4:
+ delta = get_unaligned((u32 *)current_insn);
+ current_insn += 4;
+ frame->pc += delta * cie->code_alignment_factor;
+ break;
+ case DW_CFA_offset_extended:
+ count = dwarf_read_uleb128(current_insn, &reg);
+ current_insn += count;
+ count = dwarf_read_uleb128(current_insn, &offset);
+ current_insn += count;
+ offset *= cie->data_alignment_factor;
+ break;
+ case DW_CFA_restore_extended:
+ count = dwarf_read_uleb128(current_insn, &reg);
+ current_insn += count;
+ break;
+ case DW_CFA_undefined:
+ count = dwarf_read_uleb128(current_insn, &reg);
+ current_insn += count;
+ break;
+ case DW_CFA_def_cfa:
+ count = dwarf_read_uleb128(current_insn,
+ &frame->cfa_register);
+ current_insn += count;
+ count = dwarf_read_uleb128(current_insn,
+ &frame->cfa_offset);
+ current_insn += count;
+
+ frame->flags |= DWARF_FRAME_CFA_REG_OFFSET;
+ break;
+ case DW_CFA_def_cfa_register:
+ count = dwarf_read_uleb128(current_insn,
+ &frame->cfa_register);
+ current_insn += count;
+ frame->cfa_offset = 0;
+ frame->flags |= DWARF_FRAME_CFA_REG_OFFSET;
+ break;
+ case DW_CFA_def_cfa_offset:
+ count = dwarf_read_uleb128(current_insn, &offset);
+ current_insn += count;
+ frame->cfa_offset = offset;
+ break;
+ case DW_CFA_def_cfa_expression:
+ count = dwarf_read_uleb128(current_insn, &expr_len);
+ current_insn += count;
+
+ frame->cfa_expr = current_insn;
+ frame->cfa_expr_len = expr_len;
+ current_insn += expr_len;
+
+ frame->flags |= DWARF_FRAME_CFA_REG_EXP;
+ break;
+ case DW_CFA_offset_extended_sf:
+ count = dwarf_read_uleb128(current_insn, &reg);
+ current_insn += count;
+ count = dwarf_read_leb128(current_insn, &offset);
+ current_insn += count;
+ offset *= cie->data_alignment_factor;
+ dwarf_frame_alloc_regs(frame, reg);
+ frame->regs[reg].flags |= DWARF_REG_OFFSET;
+ frame->regs[reg].addr = offset;
+ break;
+ case DW_CFA_val_offset:
+ count = dwarf_read_uleb128(current_insn, &reg);
+ current_insn += count;
+ count = dwarf_read_leb128(current_insn, &offset);
+ offset *= cie->data_alignment_factor;
+ frame->regs[reg].flags |= DWARF_REG_OFFSET;
+ frame->regs[reg].addr = offset;
+ break;
+ default:
+ pr_debug("unhandled DWARF instruction 0x%x\n", insn);
+ break;
+ }
+ }
+
+ return 0;
+}
+
+/**
+ * dwarf_unwind_stack - recursively unwind the stack
+ * @pc: address of the function to unwind
+ * @prev: struct dwarf_frame of the previous stackframe on the callstack
+ *
+ * Return a struct dwarf_frame representing the most recent frame
+ * on the callstack. Each of the lower (older) stack frames are
+ * linked via the "prev" member.
+ */
+struct dwarf_frame *dwarf_unwind_stack(unsigned long pc,
+ struct dwarf_frame *prev)
+{
+ struct dwarf_frame *frame;
+ struct dwarf_cie *cie;
+ struct dwarf_fde *fde;
+ unsigned long addr;
+ int i, offset;
+ bool define_ra = false;
+
+ /*
+ * If this is the first invocation of this recursive function we
+ * need get the contents of a physical register to get the CFA
+ * in order to begin the virtual unwinding of the stack.
+ *
+ * Setting "define_ra" to true indictates that we want
+ * dwarf_cfa_execute_insns() to continue executing instructions
+ * until we know how to calculate the value of DWARF_ARCH_RA_REG
+ * (which we need in order to kick off the whole unwinding
+ * process).
+ *
+ * NOTE: the return address is guaranteed to be setup by the
+ * time this function makes its first function call.
+ */
+ if (!pc && !prev) {
+ pc = (unsigned long)&dwarf_unwind_stack;
+ define_ra = true;
+ }
+
+ frame = kzalloc(sizeof(*frame), GFP_ATOMIC);
+ if (!frame)
+ return NULL;
+
+ frame->prev = prev;
+
+ fde = dwarf_lookup_fde(pc);
+ if (!fde) {
+ /*
+ * This is our normal exit path - the one that stops the
+ * recursion. There's two reasons why we might exit
+ * here,
+ *
+ * a) pc has no asscociated DWARF frame info and so
+ * we don't know how to unwind this frame. This is
+ * usually the case when we're trying to unwind a
+ * frame that was called from some assembly code
+ * that has no DWARF info, e.g. syscalls.
+ *
+ * b) the DEBUG info for pc is bogus. There's
+ * really no way to distinguish this case from the
+ * case above, which sucks because we could print a
+ * warning here.
+ */
+ return NULL;
+ }
+
+ cie = dwarf_lookup_cie(fde->cie_pointer);
+
+ frame->pc = fde->initial_location;
+
+ /* CIE initial instructions */
+ dwarf_cfa_execute_insns(cie->initial_instructions,
+ cie->instructions_end, cie, fde,
+ frame, pc, false);
+
+ /* FDE instructions */
+ dwarf_cfa_execute_insns(fde->instructions, fde->end, cie,
+ fde, frame, pc, define_ra);
+
+ /* Calculate the CFA */
+ switch (frame->flags) {
+ case DWARF_FRAME_CFA_REG_OFFSET:
+ if (prev) {
+ BUG_ON(!prev->regs[frame->cfa_register].flags);
+
+ addr = prev->cfa;
+ addr += prev->regs[frame->cfa_register].addr;
+ frame->cfa = __raw_readl(addr);
+
+ } else {
+ /*
+ * Again, this is the first invocation of this
+ * recurisve function. We need to physically
+ * read the contents of a register in order to
+ * get the Canonical Frame Address for this
+ * function.
+ */
+ frame->cfa = dwarf_read_arch_reg(frame->cfa_register);
+ }
+
+ frame->cfa += frame->cfa_offset;
+ break;
+ default:
+ BUG();
+ }
+
+ /* If we haven't seen the return address reg, we're screwed. */
+ BUG_ON(!frame->regs[DWARF_ARCH_RA_REG].flags);
+
+ for (i = 0; i <= frame->num_regs; i++) {
+ struct dwarf_reg *reg = &frame->regs[i];
+
+ if (!reg->flags)
+ continue;
+
+ offset = reg->addr;
+ offset += frame->cfa;
+ }
+
+ addr = frame->cfa + frame->regs[DWARF_ARCH_RA_REG].addr;
+ frame->return_addr = __raw_readl(addr);
+
+ frame->next = dwarf_unwind_stack(frame->return_addr, frame);
+ return frame;
+}
+
+static int dwarf_parse_cie(void *entry, void *p, unsigned long len,
+ unsigned char *end)
+{
+ struct dwarf_cie *cie;
+ unsigned long flags;
+ int count;
+
+ cie = kzalloc(sizeof(*cie), GFP_KERNEL);
+ if (!cie)
+ return -ENOMEM;
+
+ cie->length = len;
+
+ /*
+ * Record the offset into the .eh_frame section
+ * for this CIE. It allows this CIE to be
+ * quickly and easily looked up from the
+ * corresponding FDE.
+ */
+ cie->cie_pointer = (unsigned long)entry;
+
+ cie->version = *(char *)p++;
+ BUG_ON(cie->version != 1);
+
+ cie->augmentation = p;
+ p += strlen(cie->augmentation) + 1;
+
+ count = dwarf_read_uleb128(p, &cie->code_alignment_factor);
+ p += count;
+
+ count = dwarf_read_leb128(p, &cie->data_alignment_factor);
+ p += count;
+
+ /*
+ * Which column in the rule table contains the
+ * return address?
+ */
+ if (cie->version == 1) {
+ cie->return_address_reg = __raw_readb(p);
+ p++;
+ } else {
+ count = dwarf_read_uleb128(p, &cie->return_address_reg);
+ p += count;
+ }
+
+ if (cie->augmentation[0] == 'z') {
+ unsigned int length, count;
+ cie->flags |= DWARF_CIE_Z_AUGMENTATION;
+
+ count = dwarf_read_uleb128(p, &length);
+ p += count;
+
+ BUG_ON((unsigned char *)p > end);
+
+ cie->initial_instructions = p + length;
+ cie->augmentation++;
+ }
+
+ while (*cie->augmentation) {
+ /*
+ * "L" indicates a byte showing how the
+ * LSDA pointer is encoded. Skip it.
+ */
+ if (*cie->augmentation == 'L') {
+ p++;
+ cie->augmentation++;
+ } else if (*cie->augmentation == 'R') {
+ /*
+ * "R" indicates a byte showing
+ * how FDE addresses are
+ * encoded.
+ */
+ cie->encoding = *(char *)p++;
+ cie->augmentation++;
+ } else if (*cie->augmentation == 'P') {
+ /*
+ * "R" indicates a personality
+ * routine in the CIE
+ * augmentation.
+ */
+ BUG();
+ } else if (*cie->augmentation == 'S') {
+ BUG();
+ } else {
+ /*
+ * Unknown augmentation. Assume
+ * 'z' augmentation.
+ */
+ p = cie->initial_instructions;
+ BUG_ON(!p);
+ break;
+ }
+ }
+
+ cie->initial_instructions = p;
+ cie->instructions_end = end;
+
+ /* Add to list */
+ spin_lock_irqsave(&dwarf_cie_lock, flags);
+ list_add_tail(&cie->link, &dwarf_cie_list);
+ spin_unlock_irqrestore(&dwarf_cie_lock, flags);
+
+ return 0;
+}
+
+static int dwarf_parse_fde(void *entry, u32 entry_type,
+ void *start, unsigned long len)
+{
+ struct dwarf_fde *fde;
+ struct dwarf_cie *cie;
+ unsigned long flags;
+ int count;
+ void *p = start;
+
+ fde = kzalloc(sizeof(*fde), GFP_KERNEL);
+ if (!fde)
+ return -ENOMEM;
+
+ fde->length = len;
+
+ /*
+ * In a .eh_frame section the CIE pointer is the
+ * delta between the address within the FDE
+ */
+ fde->cie_pointer = (unsigned long)(p - entry_type - 4);
+
+ cie = dwarf_lookup_cie(fde->cie_pointer);
+ fde->cie = cie;
+
+ if (cie->encoding)
+ count = dwarf_read_encoded_value(p, &fde->initial_location,
+ cie->encoding);
+ else
+ count = dwarf_read_addr(p, &fde->initial_location);
+
+ p += count;
+
+ if (cie->encoding)
+ count = dwarf_read_encoded_value(p, &fde->address_range,
+ cie->encoding & 0x0f);
+ else
+ count = dwarf_read_addr(p, &fde->address_range);
+
+ p += count;
+
+ if (fde->cie->flags & DWARF_CIE_Z_AUGMENTATION) {
+ unsigned int length;
+ count = dwarf_read_uleb128(p, &length);
+ p += count + length;
+ }
+
+ /* Call frame instructions. */
+ fde->instructions = p;
+ fde->end = start + len;
+
+ /* Add to list. */
+ spin_lock_irqsave(&dwarf_fde_lock, flags);
+ list_add_tail(&fde->link, &dwarf_fde_list);
+ spin_unlock_irqrestore(&dwarf_fde_lock, flags);
+
+ return 0;
+}
+
+static void dwarf_unwinder_dump(struct task_struct *task, struct pt_regs *regs,
+ unsigned long *sp,
+ const struct stacktrace_ops *ops, void *data)
+{
+ struct dwarf_frame *frame;
+
+ frame = dwarf_unwind_stack(0, NULL);
+
+ while (frame && frame->return_addr) {
+ ops->address(data, frame->return_addr, 1);
+ frame = frame->next;
+ }
+}
+
+static struct unwinder dwarf_unwinder = {
+ .name = "dwarf-unwinder",
+ .dump = dwarf_unwinder_dump,
+ .rating = 150,
+};
+
+static void dwarf_unwinder_cleanup(void)
+{
+ struct dwarf_cie *cie, *m;
+ struct dwarf_fde *fde, *n;
+ unsigned long flags;
+
+ /*
+ * Deallocate all the memory allocated for the DWARF unwinder.
+ * Traverse all the FDE/CIE lists and remove and free all the
+ * memory associated with those data structures.
+ */
+ spin_lock_irqsave(&dwarf_cie_lock, flags);
+ list_for_each_entry_safe(cie, m, &dwarf_cie_list, link)
+ kfree(cie);
+ spin_unlock_irqrestore(&dwarf_cie_lock, flags);
+
+ spin_lock_irqsave(&dwarf_fde_lock, flags);
+ list_for_each_entry_safe(fde, n, &dwarf_fde_list, link)
+ kfree(fde);
+ spin_unlock_irqrestore(&dwarf_fde_lock, flags);
+}
+
+/**
+ * dwarf_unwinder_init - initialise the dwarf unwinder
+ *
+ * Build the data structures describing the .dwarf_frame section to
+ * make it easier to lookup CIE and FDE entries. Because the
+ * .eh_frame section is packed as tightly as possible it is not
+ * easy to lookup the FDE for a given PC, so we build a list of FDE
+ * and CIE entries that make it easier.
+ */
+void dwarf_unwinder_init(void)
+{
+ u32 entry_type;
+ void *p, *entry;
+ int count, err;
+ unsigned long len;
+ unsigned int c_entries, f_entries;
+ unsigned char *end;
+ INIT_LIST_HEAD(&dwarf_cie_list);
+ INIT_LIST_HEAD(&dwarf_fde_list);
+
+ c_entries = 0;
+ f_entries = 0;
+ entry = &__start_eh_frame;
+
+ while ((char *)entry < __stop_eh_frame) {
+ p = entry;
+
+ count = dwarf_entry_len(p, &len);
+ if (count == 0) {
+ /*
+ * We read a bogus length field value. There is
+ * nothing we can do here apart from disabling
+ * the DWARF unwinder. We can't even skip this
+ * entry and move to the next one because 'len'
+ * tells us where our next entry is.
+ */
+ goto out;
+ } else
+ p += count;
+
+ /* initial length does not include itself */
+ end = p + len;
+
+ entry_type = get_unaligned((u32 *)p);
+ p += 4;
+
+ if (entry_type == DW_EH_FRAME_CIE) {
+ err = dwarf_parse_cie(entry, p, len, end);
+ if (err < 0)
+ goto out;
+ else
+ c_entries++;
+ } else {
+ err = dwarf_parse_fde(entry, entry_type, p, len);
+ if (err < 0)
+ goto out;
+ else
+ f_entries++;
+ }
+
+ entry = (char *)entry + len + 4;
+ }
+
+ printk(KERN_INFO "DWARF unwinder initialised: read %u CIEs, %u FDEs\n",
+ c_entries, f_entries);
+
+ err = unwinder_register(&dwarf_unwinder);
+ if (err)
+ goto out;
+
+ return;
+
+out:
+ printk(KERN_ERR "Failed to initialise DWARF unwinder: %d\n", err);
+ dwarf_unwinder_cleanup();
+}
diff --git a/arch/sh/kernel/early_printk.c b/arch/sh/kernel/early_printk.c
index 64f2746..81a4614 100644
--- a/arch/sh/kernel/early_printk.c
+++ b/arch/sh/kernel/early_printk.c
@@ -223,6 +223,7 @@ static int __init setup_early_printk(char *buf)
#if defined(CONFIG_CPU_SH4) || defined(CONFIG_CPU_SH3)
scif_sercon_init(buf + 6);
#endif
+#endif
}
#endif
diff --git a/arch/sh/kernel/entry-common.S b/arch/sh/kernel/entry-common.S
index fc26ccd..e63178f 100644
--- a/arch/sh/kernel/entry-common.S
+++ b/arch/sh/kernel/entry-common.S
@@ -43,6 +43,7 @@
* syscall #
*
*/
+#include <asm/dwarf.h>
#if defined(CONFIG_PREEMPT)
# define preempt_stop() cli ; TRACE_IRQS_OFF
@@ -66,6 +67,11 @@ ENTRY(exception_error)
.align 2
ret_from_exception:
+ CFI_STARTPROC simple
+ CFI_DEF_CFA r14, 0
+ CFI_REL_OFFSET 17, 64
+ CFI_REL_OFFSET 15, 0
+ CFI_REL_OFFSET 14, 56
preempt_stop()
ENTRY(ret_from_irq)
!
@@ -240,6 +246,7 @@ debug_trap:
nop
bra __restore_all
nop
+ CFI_ENDPROC
.align 2
1: .long debug_trap_table
@@ -285,6 +292,7 @@ ret_from_fork:
* system calls and debug traps through their respective jump tables.
*/
ENTRY(system_call)
+ setup_frame_reg
#if !defined(CONFIG_CPU_SH2)
mov.l 1f, r9
mov.l @r9, r8 ! Read from TRA (Trap Address) Register
diff --git a/arch/sh/kernel/irq.c b/arch/sh/kernel/irq.c
index 278c68c..2bb43dc 100644
--- a/arch/sh/kernel/irq.c
+++ b/arch/sh/kernel/irq.c
@@ -14,6 +14,7 @@
#include <asm/processor.h>
#include <asm/machvec.h>
#include <asm/uaccess.h>
+#include <asm/dwarf.h>
#include <asm/thread_info.h>
#include <cpu/mmu_context.h>
@@ -261,6 +262,9 @@ void __init init_IRQ(void)
sh_mv.mv_init_irq();
irq_ctx_init(smp_processor_id());
+
+ /* This needs to be early, but not too early.. */
+ dwarf_unwinder_init();
}
#ifdef CONFIG_SPARSE_IRQ
diff --git a/arch/sh/kernel/stacktrace.c b/arch/sh/kernel/stacktrace.c
index 1a2a5eb..c2e45c4 100644
--- a/arch/sh/kernel/stacktrace.c
+++ b/arch/sh/kernel/stacktrace.c
@@ -13,47 +13,93 @@
#include <linux/stacktrace.h>
#include <linux/thread_info.h>
#include <linux/module.h>
+#include <asm/unwinder.h>
#include <asm/ptrace.h>
+#include <asm/stacktrace.h>
+
+static void save_stack_warning(void *data, char *msg)
+{
+}
+
+static void
+save_stack_warning_symbol(void *data, char *msg, unsigned long symbol)
+{
+}
+
+static int save_stack_stack(void *data, char *name)
+{
+ return 0;
+}
/*
* Save stack-backtrace addresses into a stack_trace buffer.
*/
+static void save_stack_address(void *data, unsigned long addr, int reliable)
+{
+ struct stack_trace *trace = data;
+
+ if (!reliable)
+ return;
+
+ if (trace->skip > 0) {
+ trace->skip--;
+ return;
+ }
+
+ if (trace->nr_entries < trace->max_entries)
+ trace->entries[trace->nr_entries++] = addr;
+}
+
+static const struct stacktrace_ops save_stack_ops = {
+ .warning = save_stack_warning,
+ .warning_symbol = save_stack_warning_symbol,
+ .stack = save_stack_stack,
+ .address = save_stack_address,
+};
+
void save_stack_trace(struct stack_trace *trace)
{
unsigned long *sp = (unsigned long *)current_stack_pointer;
- while (!kstack_end(sp)) {
- unsigned long addr = *sp++;
-
- if (__kernel_text_address(addr)) {
- if (trace->skip > 0)
- trace->skip--;
- else
- trace->entries[trace->nr_entries++] = addr;
- if (trace->nr_entries >= trace->max_entries)
- break;
- }
- }
+ unwind_stack(current, NULL, sp, &save_stack_ops, trace);
+ if (trace->nr_entries < trace->max_entries)
+ trace->entries[trace->nr_entries++] = ULONG_MAX;
}
EXPORT_SYMBOL_GPL(save_stack_trace);
+static void
+save_stack_address_nosched(void *data, unsigned long addr, int reliable)
+{
+ struct stack_trace *trace = (struct stack_trace *)data;
+
+ if (!reliable)
+ return;
+
+ if (in_sched_functions(addr))
+ return;
+
+ if (trace->skip > 0) {
+ trace->skip--;
+ return;
+ }
+
+ if (trace->nr_entries < trace->max_entries)
+ trace->entries[trace->nr_entries++] = addr;
+}
+
+static const struct stacktrace_ops save_stack_ops_nosched = {
+ .warning = save_stack_warning,
+ .warning_symbol = save_stack_warning_symbol,
+ .stack = save_stack_stack,
+ .address = save_stack_address_nosched,
+};
+
void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
{
unsigned long *sp = (unsigned long *)tsk->thread.sp;
- while (!kstack_end(sp)) {
- unsigned long addr = *sp++;
-
- if (__kernel_text_address(addr)) {
- if (in_sched_functions(addr))
- break;
- if (trace->skip > 0)
- trace->skip--;
- else
- trace->entries[trace->nr_entries++] = addr;
- if (trace->nr_entries >= trace->max_entries)
- break;
- }
- }
+ unwind_stack(current, NULL, sp, &save_stack_ops_nosched, trace);
+ if (trace->nr_entries < trace->max_entries)
+ trace->entries[trace->nr_entries++] = ULONG_MAX;
}
EXPORT_SYMBOL_GPL(save_stack_trace_tsk);
diff --git a/arch/sh/kernel/traps_32.c b/arch/sh/kernel/traps_32.c
index 2b77277..5634264 100644
--- a/arch/sh/kernel/traps_32.c
+++ b/arch/sh/kernel/traps_32.c
@@ -858,30 +858,6 @@ void __init trap_init(void)
per_cpu_trap_init();
}
-void show_trace(struct task_struct *tsk, unsigned long *sp,
- struct pt_regs *regs)
-{
- unsigned long addr;
-
- if (regs && user_mode(regs))
- return;
-
- printk("\nCall trace:\n");
-
- while (!kstack_end(sp)) {
- addr = *sp++;
- if (kernel_text_address(addr))
- print_ip_sym(addr);
- }
-
- printk("\n");
-
- if (!tsk)
- tsk = current;
-
- debug_show_held_locks(tsk);
-}
-
void show_stack(struct task_struct *tsk, unsigned long *sp)
{
unsigned long stack;
diff --git a/arch/sh/kernel/unwinder.c b/arch/sh/kernel/unwinder.c
new file mode 100644
index 0000000..2b30fa2
--- /dev/null
+++ b/arch/sh/kernel/unwinder.c
@@ -0,0 +1,162 @@
+/*
+ * Copyright (C) 2009 Matt Fleming
+ *
+ * Based, in part, on kernel/time/clocksource.c.
+ *
+ * This file provides arbitration code for stack unwinders.
+ *
+ * Multiple stack unwinders can be available on a system, usually with
+ * the most accurate unwinder being the currently active one.
+ */
+#include <linux/errno.h>
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <asm/unwinder.h>
+#include <asm/atomic.h>
+
+/*
+ * This is the most basic stack unwinder an architecture can
+ * provide. For architectures without reliable frame pointers, e.g.
+ * RISC CPUs, it can be implemented by looking through the stack for
+ * addresses that lie within the kernel text section.
+ *
+ * Other CPUs, e.g. x86, can use their frame pointer register to
+ * construct more accurate stack traces.
+ */
+static struct list_head unwinder_list;
+static struct unwinder stack_reader = {
+ .name = "stack-reader",
+ .dump = stack_reader_dump,
+ .rating = 50,
+ .list = {
+ .next = &unwinder_list,
+ .prev = &unwinder_list,
+ },
+};
+
+/*
+ * "curr_unwinder" points to the stack unwinder currently in use. This
+ * is the unwinder with the highest rating.
+ *
+ * "unwinder_list" is a linked-list of all available unwinders, sorted
+ * by rating.
+ *
+ * All modifications of "curr_unwinder" and "unwinder_list" must be
+ * performed whilst holding "unwinder_lock".
+ */
+static struct unwinder *curr_unwinder = &stack_reader;
+
+static struct list_head unwinder_list = {
+ .next = &stack_reader.list,
+ .prev = &stack_reader.list,
+};
+
+static DEFINE_SPINLOCK(unwinder_lock);
+
+static atomic_t unwinder_running = ATOMIC_INIT(0);
+
+/**
+ * select_unwinder - Select the best registered stack unwinder.
+ *
+ * Private function. Must hold unwinder_lock when called.
+ *
+ * Select the stack unwinder with the best rating. This is useful for
+ * setting up curr_unwinder.
+ */
+static struct unwinder *select_unwinder(void)
+{
+ struct unwinder *best;
+
+ if (list_empty(&unwinder_list))
+ return NULL;
+
+ best = list_entry(unwinder_list.next, struct unwinder, list);
+ if (best == curr_unwinder)
+ return NULL;
+
+ return best;
+}
+
+/*
+ * Enqueue the stack unwinder sorted by rating.
+ */
+static int unwinder_enqueue(struct unwinder *ops)
+{
+ struct list_head *tmp, *entry = &unwinder_list;
+
+ list_for_each(tmp, &unwinder_list) {
+ struct unwinder *o;
+
+ o = list_entry(tmp, struct unwinder, list);
+ if (o == ops)
+ return -EBUSY;
+ /* Keep track of the place, where to insert */
+ if (o->rating >= ops->rating)
+ entry = tmp;
+ }
+ list_add(&ops->list, entry);
+
+ return 0;
+}
+
+/**
+ * unwinder_register - Used to install new stack unwinder
+ * @u: unwinder to be registered
+ *
+ * Install the new stack unwinder on the unwinder list, which is sorted
+ * by rating.
+ *
+ * Returns -EBUSY if registration fails, zero otherwise.
+ */
+int unwinder_register(struct unwinder *u)
+{
+ unsigned long flags;
+ int ret;
+
+ spin_lock_irqsave(&unwinder_lock, flags);
+ ret = unwinder_enqueue(u);
+ if (!ret)
+ curr_unwinder = select_unwinder();
+ spin_unlock_irqrestore(&unwinder_lock, flags);
+
+ return ret;
+}
+
+/*
+ * Unwind the call stack and pass information to the stacktrace_ops
+ * functions. Also handle the case where we need to switch to a new
+ * stack dumper because the current one faulted unexpectedly.
+ */
+void unwind_stack(struct task_struct *task, struct pt_regs *regs,
+ unsigned long *sp, const struct stacktrace_ops *ops,
+ void *data)
+{
+ unsigned long flags;
+
+ /*
+ * The problem with unwinders with high ratings is that they are
+ * inherently more complicated than the simple ones with lower
+ * ratings. We are therefore more likely to fault in the
+ * complicated ones, e.g. hitting BUG()s. If we fault in the
+ * code for the current stack unwinder we try to downgrade to
+ * one with a lower rating.
+ *
+ * Hopefully this will give us a semi-reliable stacktrace so we
+ * can diagnose why curr_unwinder->dump() faulted.
+ */
+ if (atomic_inc_return(&unwinder_running) != 1) {
+ spin_lock_irqsave(&unwinder_lock, flags);
+
+ if (!list_is_singular(&unwinder_list)) {
+ list_del(&curr_unwinder->list);
+ curr_unwinder = select_unwinder();
+ }
+
+ spin_unlock_irqrestore(&unwinder_lock, flags);
+ atomic_dec(&unwinder_running);
+ }
+
+ curr_unwinder->dump(task, regs, sp, ops, data);
+
+ atomic_dec(&unwinder_running);
+}
diff --git a/arch/sh/kernel/vmlinux.lds.S b/arch/sh/kernel/vmlinux.lds.S
index 80dc9f8..1b7d9d5 100644
--- a/arch/sh/kernel/vmlinux.lds.S
+++ b/arch/sh/kernel/vmlinux.lds.S
@@ -12,7 +12,7 @@ OUTPUT_ARCH(sh)
#include <asm/thread_info.h>
#include <asm/cache.h>
-#include <asm-generic/vmlinux.lds.h>
+#include <asm/vmlinux.lds.h>
ENTRY(_start)
SECTIONS
@@ -70,6 +70,8 @@ SECTIONS
_edata = .; /* End of data section */
+ DWARF_EH_FRAME
+
. = ALIGN(PAGE_SIZE); /* Init code and data */
__init_begin = .;
INIT_TEXT_SECTION(PAGE_SIZE)
diff --git a/arch/sh/mm/ioremap_64.c b/arch/sh/mm/ioremap_64.c
index 828c859..b16843d 100644
--- a/arch/sh/mm/ioremap_64.c
+++ b/arch/sh/mm/ioremap_64.c
@@ -94,7 +94,6 @@ static struct resource *shmedia_find_resource(struct resource *root,
static void __iomem *shmedia_alloc_io(unsigned long phys, unsigned long size,
const char *name, unsigned long flags)
{
- static int printed_full;
struct xresource *xres;
struct resource *res;
char *tack;
@@ -108,11 +107,8 @@ static void __iomem *shmedia_alloc_io(unsigned long phys, unsigned long size,
tack = xres->xname;
res = &xres->xres;
} else {
- if (!printed_full) {
- printk(KERN_NOTICE "%s: done with statics, "
+ printk_once(KERN_NOTICE "%s: done with statics, "
"switching to kmalloc\n", __func__);
- printed_full = 1;
- }
tlen = strlen(name);
tack = kmalloc(sizeof(struct resource) + tlen + 1, GFP_KERNEL);
if (!tack)
diff --git a/arch/sh/oprofile/backtrace.c b/arch/sh/oprofile/backtrace.c
index 9499a29..2bc74de 100644
--- a/arch/sh/oprofile/backtrace.c
+++ b/arch/sh/oprofile/backtrace.c
@@ -17,9 +17,43 @@
#include <linux/sched.h>
#include <linux/kallsyms.h>
#include <linux/mm.h>
+#include <asm/unwinder.h>
#include <asm/ptrace.h>
#include <asm/uaccess.h>
#include <asm/sections.h>
+#include <asm/stacktrace.h>
+
+static void backtrace_warning_symbol(void *data, char *msg,
+ unsigned long symbol)
+{
+ /* Ignore warnings */
+}
+
+static void backtrace_warning(void *data, char *msg)
+{
+ /* Ignore warnings */
+}
+
+static int backtrace_stack(void *data, char *name)
+{
+ /* Yes, we want all stacks */
+ return 0;
+}
+
+static void backtrace_address(void *data, unsigned long addr, int reliable)
+{
+ unsigned int *depth = data;
+
+ if ((*depth)--)
+ oprofile_add_trace(addr);
+}
+
+static struct stacktrace_ops backtrace_ops = {
+ .warning = backtrace_warning,
+ .warning_symbol = backtrace_warning_symbol,
+ .stack = backtrace_stack,
+ .address = backtrace_address,
+};
/* Limit to stop backtracing too far. */
static int backtrace_limit = 20;
@@ -47,50 +81,6 @@ user_backtrace(unsigned long *stackaddr, struct pt_regs *regs)
return stackaddr;
}
-/*
- * | | /\ Higher addresses
- * | |
- * --------------- stack base (address of current_thread_info)
- * | thread info |
- * . .
- * | stack |
- * --------------- saved regs->regs[15] value if valid
- * . .
- * --------------- struct pt_regs stored on stack (struct pt_regs *)
- * | |
- * . .
- * | |
- * --------------- ???
- * | |
- * | | \/ Lower addresses
- *
- * Thus, &pt_regs <-> stack base restricts the valid(ish) fp values
- */
-static int valid_kernel_stack(unsigned long *stackaddr, struct pt_regs *regs)
-{
- unsigned long stack = (unsigned long)regs;
- unsigned long stack_base = (stack & ~(THREAD_SIZE - 1)) + THREAD_SIZE;
-
- return ((unsigned long)stackaddr > stack) && ((unsigned long)stackaddr < stack_base);
-}
-
-static unsigned long *
-kernel_backtrace(unsigned long *stackaddr, struct pt_regs *regs)
-{
- unsigned long addr;
-
- /*
- * If not a valid kernel address, keep going till we find one
- * or the SP stops being a valid address.
- */
- do {
- addr = *stackaddr++;
- oprofile_add_trace(addr);
- } while (valid_kernel_stack(stackaddr, regs));
-
- return stackaddr;
-}
-
void sh_backtrace(struct pt_regs * const regs, unsigned int depth)
{
unsigned long *stackaddr;
@@ -103,9 +93,9 @@ void sh_backtrace(struct pt_regs * const regs, unsigned int depth)
stackaddr = (unsigned long *)regs->regs[15];
if (!user_mode(regs)) {
- while (depth-- && valid_kernel_stack(stackaddr, regs))
- stackaddr = kernel_backtrace(stackaddr, regs);
-
+ if (depth)
+ unwind_stack(NULL, regs, stackaddr,
+ &backtrace_ops, &depth);
return;
}