MIPS: WRPPMC: Move code one directory level up.

It was the last platform under gt64120 and will fit better into the new
platform makefile scheme, if moved.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

7 files changed, 411 insertions, 0 deletions

diff --git a/arch/mips/wrppmc/Makefile b/arch/mips/wrppmc/Makefile
new file mode 100644
index 0000000..b49d282
--- /dev/null
+++ b/arch/mips/wrppmc/Makefile
@@ -0,0 +1,14 @@
+#
+# 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.
+#
+# Copyright 2006 Wind River System, Inc.
+# Author: Rongkai.Zhan <rongkai.zhan@windriver.com>
+#
+# Makefile for the Wind River MIPS 4KC PPMC Eval Board
+#
+
+obj-y += irq.o pci.o reset.o serial.o setup.o time.o
+
+EXTRA_CFLAGS += -Werror
diff --git a/arch/mips/wrppmc/irq.c b/arch/mips/wrppmc/irq.c
new file mode 100644
index 0000000..c6e7062
--- /dev/null
+++ b/arch/mips/wrppmc/irq.c
@@ -0,0 +1,56 @@
+/*
+ * irq.c: GT64120 Interrupt Controller
+ *
+ * Copyright (C) 2006, Wind River System Inc.
+ * Author: Rongkai.Zhan, <rongkai.zhan@windriver.com>
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+#include <linux/hardirq.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+
+#include <asm/gt64120.h>
+#include <asm/irq_cpu.h>
+#include <asm/mipsregs.h>
+
+asmlinkage void plat_irq_dispatch(void)
+{
+	unsigned int pending = read_c0_status() & read_c0_cause() & ST0_IM;
+
+	if (pending & STATUSF_IP7)
+		do_IRQ(WRPPMC_MIPS_TIMER_IRQ);	/* CPU Compare/Count internal timer */
+	else if (pending & STATUSF_IP6)
+		do_IRQ(WRPPMC_UART16550_IRQ);	/* UART 16550 port */
+	else if (pending & STATUSF_IP3)
+		do_IRQ(WRPPMC_PCI_INTA_IRQ);	/* PCI INT_A */
+	else
+		spurious_interrupt();
+}
+
+/**
+ * Initialize GT64120 Interrupt Controller
+ */
+void gt64120_init_pic(void)
+{
+	/* clear CPU Interrupt Cause Registers */
+	GT_WRITE(GT_INTRCAUSE_OFS, (0x1F << 21));
+	GT_WRITE(GT_HINTRCAUSE_OFS, 0x00);
+
+	/* Disable all interrupts from GT64120 bridge chip */
+	GT_WRITE(GT_INTRMASK_OFS, 0x00);
+	GT_WRITE(GT_HINTRMASK_OFS, 0x00);
+	GT_WRITE(GT_PCI0_ICMASK_OFS, 0x00);
+	GT_WRITE(GT_PCI0_HICMASK_OFS, 0x00);
+}
+
+void __init arch_init_irq(void)
+{
+	/* IRQ 0 - 7 are for MIPS common irq_cpu controller */
+	mips_cpu_irq_init();
+
+	gt64120_init_pic();
+}
diff --git a/arch/mips/wrppmc/pci.c b/arch/mips/wrppmc/pci.c
new file mode 100644
index 0000000..d06192f
--- /dev/null
+++ b/arch/mips/wrppmc/pci.c
@@ -0,0 +1,54 @@
+/*
+ * pci.c: GT64120 PCI support.
+ *
+ * Copyright (C) 2006, Wind River System Inc. Rongkai.Zhan <rongkai.zhan@windriver.com>
+ *
+ * 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/init.h>
+#include <linux/ioport.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+
+#include <asm/gt64120.h>
+
+extern struct pci_ops gt64xxx_pci0_ops;
+
+static struct resource pci0_io_resource = {
+	.name  = "pci_0 io",
+	.start = GT_PCI_IO_BASE,
+	.end   = GT_PCI_IO_BASE + GT_PCI_IO_SIZE - 1,
+	.flags = IORESOURCE_IO,
+};
+
+static struct resource pci0_mem_resource = {
+	.name  = "pci_0 memory",
+	.start = GT_PCI_MEM_BASE,
+	.end   = GT_PCI_MEM_BASE + GT_PCI_MEM_SIZE - 1,
+	.flags = IORESOURCE_MEM,
+};
+
+static struct pci_controller hose_0 = {
+	.pci_ops	= &gt64xxx_pci0_ops,
+	.io_resource	= &pci0_io_resource,
+	.mem_resource	= &pci0_mem_resource,
+};
+
+static int __init gt64120_pci_init(void)
+{
+	u32 tmp;
+
+	tmp = GT_READ(GT_PCI0_CMD_OFS);		/* Huh??? -- Ralf  */
+	tmp = GT_READ(GT_PCI0_BARE_OFS);
+
+	/* reset the whole PCI I/O space range */
+	ioport_resource.start = GT_PCI_IO_BASE;
+	ioport_resource.end = GT_PCI_IO_BASE + GT_PCI_IO_SIZE - 1;
+
+	register_pci_controller(&hose_0);
+	return 0;
+}
+
+arch_initcall(gt64120_pci_init);
diff --git a/arch/mips/wrppmc/reset.c b/arch/mips/wrppmc/reset.c
new file mode 100644
index 0000000..cc5474b
--- /dev/null
+++ b/arch/mips/wrppmc/reset.c
@@ -0,0 +1,40 @@
+/*
+ * 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.
+ *
+ * Copyright (C) 1997 Ralf Baechle
+ */
+#include <linux/irqflags.h>
+#include <linux/kernel.h>
+
+#include <asm/cacheflush.h>
+#include <asm/mipsregs.h>
+#include <asm/processor.h>
+
+void wrppmc_machine_restart(char *command)
+{
+	/*
+	 * Ouch, we're still alive ... This time we take the silver bullet ...
+	 * ... and find that we leave the hardware in a state in which the
+	 * kernel in the flush locks up somewhen during of after the PCI
+	 * detection stuff.
+	 */
+	local_irq_disable();
+	set_c0_status(ST0_BEV | ST0_ERL);
+	change_c0_config(CONF_CM_CMASK, CONF_CM_UNCACHED);
+	flush_cache_all();
+	write_c0_wired(0);
+	__asm__ __volatile__("jr\t%0"::"r"(0xbfc00000));
+}
+
+void wrppmc_machine_halt(void)
+{
+	local_irq_disable();
+
+	printk(KERN_NOTICE "You can safely turn off the power\n");
+	while (1) {
+		if (cpu_wait)
+			cpu_wait();
+	}
+}
diff --git a/arch/mips/wrppmc/serial.c b/arch/mips/wrppmc/serial.c
new file mode 100644
index 0000000..6f9d085
--- /dev/null
+++ b/arch/mips/wrppmc/serial.c
@@ -0,0 +1,80 @@
+/*
+ *  Registration of WRPPMC UART platform device.
+ *
+ *  Copyright (C) 2007  Yoichi Yuasa <yuasa@linux-mips.org>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/platform_device.h>
+#include <linux/serial_8250.h>
+
+#include <asm/gt64120.h>
+
+static struct resource wrppmc_uart_resource[] __initdata = {
+	{
+		.start	= WRPPMC_UART16550_BASE,
+		.end	= WRPPMC_UART16550_BASE + 7,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start	= WRPPMC_UART16550_IRQ,
+		.end	= WRPPMC_UART16550_IRQ,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct plat_serial8250_port wrppmc_serial8250_port[] = {
+	{
+		.irq		= WRPPMC_UART16550_IRQ,
+		.uartclk	= WRPPMC_UART16550_CLOCK,
+		.iotype		= UPIO_MEM,
+		.flags		= UPF_IOREMAP | UPF_SKIP_TEST,
+		.mapbase	= WRPPMC_UART16550_BASE,
+	},
+	{},
+};
+
+static __init int wrppmc_uart_add(void)
+{
+	struct platform_device *pdev;
+	int retval;
+
+	pdev = platform_device_alloc("serial8250", -1);
+	if (!pdev)
+		return -ENOMEM;
+
+	pdev->id = PLAT8250_DEV_PLATFORM;
+	pdev->dev.platform_data = wrppmc_serial8250_port;
+
+	retval = platform_device_add_resources(pdev, wrppmc_uart_resource,
+					ARRAY_SIZE(wrppmc_uart_resource));
+	if (retval)
+		goto err_free_device;
+
+	retval = platform_device_add(pdev);
+	if (retval)
+		goto err_free_device;
+
+	return 0;
+
+err_free_device:
+	platform_device_put(pdev);
+
+	return retval;
+}
+device_initcall(wrppmc_uart_add);
diff --git a/arch/mips/wrppmc/setup.c b/arch/mips/wrppmc/setup.c
new file mode 100644
index 0000000..ca65c84
--- /dev/null
+++ b/arch/mips/wrppmc/setup.c
@@ -0,0 +1,128 @@
+/*
+ * setup.c: Setup pointers to hardware dependent routines.
+ *
+ * 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.
+ *
+ * Copyright (C) 1996, 1997, 2004 by Ralf Baechle (ralf@linux-mips.org)
+ * Copyright (C) 2006, Wind River System Inc. Rongkai.zhan <rongkai.zhan@windriver.com>
+ */
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/kernel.h>
+#include <linux/pm.h>
+
+#include <asm/io.h>
+#include <asm/bootinfo.h>
+#include <asm/reboot.h>
+#include <asm/time.h>
+#include <asm/gt64120.h>
+
+unsigned long gt64120_base = KSEG1ADDR(0x14000000);
+
+#ifdef WRPPMC_EARLY_DEBUG
+
+static volatile unsigned char * wrppmc_led = \
+	(volatile unsigned char *)KSEG1ADDR(WRPPMC_LED_BASE);
+
+/*
+ * PPMC LED control register:
+ * -) bit[0] controls DS1 LED (1 - OFF, 0 - ON)
+ * -) bit[1] controls DS2 LED (1 - OFF, 0 - ON)
+ * -) bit[2] controls DS4 LED (1 - OFF, 0 - ON)
+ */
+void wrppmc_led_on(int mask)
+{
+	unsigned char value = *wrppmc_led;
+
+	value &= (0xF8 | mask);
+	*wrppmc_led = value;
+}
+
+/* If mask = 0, turn off all LEDs */
+void wrppmc_led_off(int mask)
+{
+	unsigned char value = *wrppmc_led;
+
+	value |= (0x7 & mask);
+	*wrppmc_led = value;
+}
+
+/*
+ * We assume that bootloader has initialized UART16550 correctly
+ */
+void __init wrppmc_early_putc(char ch)
+{
+	static volatile unsigned char *wrppmc_uart = \
+		(volatile unsigned char *)KSEG1ADDR(WRPPMC_UART16550_BASE);
+	unsigned char value;
+
+	/* Wait until Transmit-Holding-Register is empty */
+	while (1) {
+		value = *(wrppmc_uart + 5);
+		if (value & 0x20)
+			break;
+	}
+
+	*wrppmc_uart = ch;
+}
+
+void __init wrppmc_early_printk(const char *fmt, ...)
+{
+	static char pbuf[256] = {'\0', };
+	char *ch = pbuf;
+	va_list args;
+	unsigned int i;
+
+	memset(pbuf, 0, 256);
+	va_start(args, fmt);
+	i = vsprintf(pbuf, fmt, args);
+	va_end(args);
+
+	/* Print the string */
+	while (*ch != '\0') {
+		wrppmc_early_putc(*ch);
+		/* if print '\n', also print '\r' */
+		if (*ch++ == '\n')
+			wrppmc_early_putc('\r');
+	}
+}
+#endif /* WRPPMC_EARLY_DEBUG */
+
+void __init prom_free_prom_memory(void)
+{
+}
+
+void __init plat_mem_setup(void)
+{
+	extern void wrppmc_machine_restart(char *command);
+	extern void wrppmc_machine_halt(void);
+
+	_machine_restart = wrppmc_machine_restart;
+	_machine_halt	 = wrppmc_machine_halt;
+	pm_power_off	 = wrppmc_machine_halt;
+
+	/* This makes the operations of 'in/out[bwl]' to the
+	 * physical address ( < KSEG0) can work via KSEG1
+	 */
+	set_io_port_base(KSEG1);
+}
+
+const char *get_system_type(void)
+{
+	return "Wind River PPMC (GT64120)";
+}
+
+/*
+ * Initializes basic routines and structures pointers, memory size (as
+ * given by the bios and saves the command line.
+ */
+void __init prom_init(void)
+{
+	add_memory_region(WRPPMC_SDRAM_SCS0_BASE, WRPPMC_SDRAM_SCS0_SIZE, BOOT_MEM_RAM);
+	add_memory_region(WRPPMC_BOOTROM_BASE, WRPPMC_BOOTROM_SIZE, BOOT_MEM_ROM_DATA);
+
+	wrppmc_early_printk("prom_init: GT64120 SDRAM Bank 0: 0x%x - 0x%08lx\n",
+			WRPPMC_SDRAM_SCS0_BASE, (WRPPMC_SDRAM_SCS0_BASE + WRPPMC_SDRAM_SCS0_SIZE));
+}
diff --git a/arch/mips/wrppmc/time.c b/arch/mips/wrppmc/time.c
new file mode 100644
index 0000000..668dbd5
--- /dev/null
+++ b/arch/mips/wrppmc/time.c
@@ -0,0 +1,39 @@
+/*
+ * time.c: MIPS CPU Count/Compare timer hookup
+ *
+ * Author: Mark.Zhan, <rongkai.zhan@windriver.com>
+ *
+ * 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.
+ *
+ * Copyright (C) 1996, 1997, 2004 by Ralf Baechle (ralf@linux-mips.org)
+ * Copyright (C) 2006, Wind River System Inc.
+ */
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+
+#include <asm/gt64120.h>
+#include <asm/time.h>
+
+#define WRPPMC_CPU_CLK_FREQ 40000000 /* 40MHZ */
+
+/*
+ * Estimate CPU frequency.  Sets mips_hpt_frequency as a side-effect
+ *
+ * NOTE: We disable all GT64120 timers, and use MIPS processor internal
+ * timer as the source of kernel clock tick.
+ */
+void __init plat_time_init(void)
+{
+	/* Disable GT64120 timers */
+	GT_WRITE(GT_TC_CONTROL_OFS, 0x00);
+	GT_WRITE(GT_TC0_OFS, 0x00);
+	GT_WRITE(GT_TC1_OFS, 0x00);
+	GT_WRITE(GT_TC2_OFS, 0x00);
+	GT_WRITE(GT_TC3_OFS, 0x00);
+
+	/* Use MIPS compare/count internal timer */
+	mips_hpt_frequency = WRPPMC_CPU_CLK_FREQ;
+}