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-rw-r--r--arch/arm/mach-clps7500/Makefile11
-rw-r--r--arch/arm/mach-clps7500/Makefile.boot2
-rw-r--r--arch/arm/mach-clps7500/core.c374
3 files changed, 387 insertions, 0 deletions
diff --git a/arch/arm/mach-clps7500/Makefile b/arch/arm/mach-clps7500/Makefile
new file mode 100644
index 0000000..4bd8ebd
--- /dev/null
+++ b/arch/arm/mach-clps7500/Makefile
@@ -0,0 +1,11 @@
+#
+# Makefile for the linux kernel.
+#
+
+# Object file lists.
+
+obj-y := core.o
+obj-m :=
+obj-n :=
+obj- :=
+
diff --git a/arch/arm/mach-clps7500/Makefile.boot b/arch/arm/mach-clps7500/Makefile.boot
new file mode 100644
index 0000000..fe16506
--- /dev/null
+++ b/arch/arm/mach-clps7500/Makefile.boot
@@ -0,0 +1,2 @@
+ zreladdr-y := 0x10008000
+
diff --git a/arch/arm/mach-clps7500/core.c b/arch/arm/mach-clps7500/core.c
new file mode 100644
index 0000000..fdfeded
--- /dev/null
+++ b/arch/arm/mach-clps7500/core.c
@@ -0,0 +1,374 @@
+/*
+ * linux/arch/arm/mach-clps7500/core.c
+ *
+ * Copyright (C) 1998 Russell King
+ * Copyright (C) 1999 Nexus Electronics Ltd
+ *
+ * Extra MM routines for CL7500 architecture
+ */
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/list.h>
+#include <linux/sched.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/serial_8250.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/time.h>
+
+#include <asm/hardware.h>
+#include <asm/hardware/iomd.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/mach-types.h>
+
+static void cl7500_ack_irq_a(unsigned int irq)
+{
+ unsigned int val, mask;
+
+ mask = 1 << irq;
+ val = iomd_readb(IOMD_IRQMASKA);
+ iomd_writeb(val & ~mask, IOMD_IRQMASKA);
+ iomd_writeb(mask, IOMD_IRQCLRA);
+}
+
+static void cl7500_mask_irq_a(unsigned int irq)
+{
+ unsigned int val, mask;
+
+ mask = 1 << irq;
+ val = iomd_readb(IOMD_IRQMASKA);
+ iomd_writeb(val & ~mask, IOMD_IRQMASKA);
+}
+
+static void cl7500_unmask_irq_a(unsigned int irq)
+{
+ unsigned int val, mask;
+
+ mask = 1 << irq;
+ val = iomd_readb(IOMD_IRQMASKA);
+ iomd_writeb(val | mask, IOMD_IRQMASKA);
+}
+
+static struct irqchip clps7500_a_chip = {
+ .ack = cl7500_ack_irq_a,
+ .mask = cl7500_mask_irq_a,
+ .unmask = cl7500_unmask_irq_a,
+};
+
+static void cl7500_mask_irq_b(unsigned int irq)
+{
+ unsigned int val, mask;
+
+ mask = 1 << (irq & 7);
+ val = iomd_readb(IOMD_IRQMASKB);
+ iomd_writeb(val & ~mask, IOMD_IRQMASKB);
+}
+
+static void cl7500_unmask_irq_b(unsigned int irq)
+{
+ unsigned int val, mask;
+
+ mask = 1 << (irq & 7);
+ val = iomd_readb(IOMD_IRQMASKB);
+ iomd_writeb(val | mask, IOMD_IRQMASKB);
+}
+
+static struct irqchip clps7500_b_chip = {
+ .ack = cl7500_mask_irq_b,
+ .mask = cl7500_mask_irq_b,
+ .unmask = cl7500_unmask_irq_b,
+};
+
+static void cl7500_mask_irq_c(unsigned int irq)
+{
+ unsigned int val, mask;
+
+ mask = 1 << (irq & 7);
+ val = iomd_readb(IOMD_IRQMASKC);
+ iomd_writeb(val & ~mask, IOMD_IRQMASKC);
+}
+
+static void cl7500_unmask_irq_c(unsigned int irq)
+{
+ unsigned int val, mask;
+
+ mask = 1 << (irq & 7);
+ val = iomd_readb(IOMD_IRQMASKC);
+ iomd_writeb(val | mask, IOMD_IRQMASKC);
+}
+
+static struct irqchip clps7500_c_chip = {
+ .ack = cl7500_mask_irq_c,
+ .mask = cl7500_mask_irq_c,
+ .unmask = cl7500_unmask_irq_c,
+};
+
+static void cl7500_mask_irq_d(unsigned int irq)
+{
+ unsigned int val, mask;
+
+ mask = 1 << (irq & 7);
+ val = iomd_readb(IOMD_IRQMASKD);
+ iomd_writeb(val & ~mask, IOMD_IRQMASKD);
+}
+
+static void cl7500_unmask_irq_d(unsigned int irq)
+{
+ unsigned int val, mask;
+
+ mask = 1 << (irq & 7);
+ val = iomd_readb(IOMD_IRQMASKD);
+ iomd_writeb(val | mask, IOMD_IRQMASKD);
+}
+
+static struct irqchip clps7500_d_chip = {
+ .ack = cl7500_mask_irq_d,
+ .mask = cl7500_mask_irq_d,
+ .unmask = cl7500_unmask_irq_d,
+};
+
+static void cl7500_mask_irq_dma(unsigned int irq)
+{
+ unsigned int val, mask;
+
+ mask = 1 << (irq & 7);
+ val = iomd_readb(IOMD_DMAMASK);
+ iomd_writeb(val & ~mask, IOMD_DMAMASK);
+}
+
+static void cl7500_unmask_irq_dma(unsigned int irq)
+{
+ unsigned int val, mask;
+
+ mask = 1 << (irq & 7);
+ val = iomd_readb(IOMD_DMAMASK);
+ iomd_writeb(val | mask, IOMD_DMAMASK);
+}
+
+static struct irqchip clps7500_dma_chip = {
+ .ack = cl7500_mask_irq_dma,
+ .mask = cl7500_mask_irq_dma,
+ .unmask = cl7500_unmask_irq_dma,
+};
+
+static void cl7500_mask_irq_fiq(unsigned int irq)
+{
+ unsigned int val, mask;
+
+ mask = 1 << (irq & 7);
+ val = iomd_readb(IOMD_FIQMASK);
+ iomd_writeb(val & ~mask, IOMD_FIQMASK);
+}
+
+static void cl7500_unmask_irq_fiq(unsigned int irq)
+{
+ unsigned int val, mask;
+
+ mask = 1 << (irq & 7);
+ val = iomd_readb(IOMD_FIQMASK);
+ iomd_writeb(val | mask, IOMD_FIQMASK);
+}
+
+static struct irqchip clps7500_fiq_chip = {
+ .ack = cl7500_mask_irq_fiq,
+ .mask = cl7500_mask_irq_fiq,
+ .unmask = cl7500_unmask_irq_fiq,
+};
+
+static void cl7500_no_action(unsigned int irq)
+{
+}
+
+static struct irqchip clps7500_no_chip = {
+ .ack = cl7500_no_action,
+ .mask = cl7500_no_action,
+ .unmask = cl7500_no_action,
+};
+
+static struct irqaction irq_isa = { no_action, 0, CPU_MASK_NONE, "isa", NULL, NULL };
+
+static void __init clps7500_init_irq(void)
+{
+ unsigned int irq, flags;
+
+ iomd_writeb(0, IOMD_IRQMASKA);
+ iomd_writeb(0, IOMD_IRQMASKB);
+ iomd_writeb(0, IOMD_FIQMASK);
+ iomd_writeb(0, IOMD_DMAMASK);
+
+ for (irq = 0; irq < NR_IRQS; irq++) {
+ flags = IRQF_VALID;
+
+ if (irq <= 6 || (irq >= 9 && irq <= 15) ||
+ (irq >= 48 && irq <= 55))
+ flags |= IRQF_PROBE;
+
+ switch (irq) {
+ case 0 ... 7:
+ set_irq_chip(irq, &clps7500_a_chip);
+ set_irq_handler(irq, do_level_IRQ);
+ set_irq_flags(irq, flags);
+ break;
+
+ case 8 ... 15:
+ set_irq_chip(irq, &clps7500_b_chip);
+ set_irq_handler(irq, do_level_IRQ);
+ set_irq_flags(irq, flags);
+ break;
+
+ case 16 ... 22:
+ set_irq_chip(irq, &clps7500_dma_chip);
+ set_irq_handler(irq, do_level_IRQ);
+ set_irq_flags(irq, flags);
+ break;
+
+ case 24 ... 31:
+ set_irq_chip(irq, &clps7500_c_chip);
+ set_irq_handler(irq, do_level_IRQ);
+ set_irq_flags(irq, flags);
+ break;
+
+ case 40 ... 47:
+ set_irq_chip(irq, &clps7500_d_chip);
+ set_irq_handler(irq, do_level_IRQ);
+ set_irq_flags(irq, flags);
+ break;
+
+ case 48 ... 55:
+ set_irq_chip(irq, &clps7500_no_chip);
+ set_irq_handler(irq, do_level_IRQ);
+ set_irq_flags(irq, flags);
+ break;
+
+ case 64 ... 72:
+ set_irq_chip(irq, &clps7500_fiq_chip);
+ set_irq_handler(irq, do_level_IRQ);
+ set_irq_flags(irq, flags);
+ break;
+ }
+ }
+
+ setup_irq(IRQ_ISA, &irq_isa);
+}
+
+static struct map_desc cl7500_io_desc[] __initdata = {
+ { IO_BASE, IO_START, IO_SIZE, MT_DEVICE }, /* IO space */
+ { ISA_BASE, ISA_START, ISA_SIZE, MT_DEVICE }, /* ISA space */
+ { FLASH_BASE, FLASH_START, FLASH_SIZE, MT_DEVICE }, /* Flash */
+ { LED_BASE, LED_START, LED_SIZE, MT_DEVICE } /* LED */
+};
+
+static void __init clps7500_map_io(void)
+{
+ iotable_init(cl7500_io_desc, ARRAY_SIZE(cl7500_io_desc));
+}
+
+extern void ioctime_init(void);
+extern unsigned long ioc_timer_gettimeoffset(void);
+
+static irqreturn_t
+clps7500_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ write_seqlock(&xtime_lock);
+
+ timer_tick(regs);
+
+ /* Why not using do_leds interface?? */
+ {
+ /* Twinkle the lights. */
+ static int count, state = 0xff00;
+ if (count-- == 0) {
+ state ^= 0x100;
+ count = 25;
+ *((volatile unsigned int *)LED_ADDRESS) = state;
+ }
+ }
+
+ write_sequnlock(&xtime_lock);
+
+ return IRQ_HANDLED;
+}
+
+static struct irqaction clps7500_timer_irq = {
+ .name = "CLPS7500 Timer Tick",
+ .flags = SA_INTERRUPT,
+ .handler = clps7500_timer_interrupt
+};
+
+/*
+ * Set up timer interrupt.
+ */
+static void __init clps7500_timer_init(void)
+{
+ ioctime_init();
+ setup_irq(IRQ_TIMER, &clps7500_timer_irq);
+}
+
+static struct sys_timer clps7500_timer = {
+ .init = clps7500_timer_init,
+ .offset = ioc_timer_gettimeoffset,
+};
+
+static struct plat_serial8250_port serial_platform_data[] = {
+ {
+ .mapbase = 0x03010fe0,
+ .irq = 10,
+ .uartclk = 1843200,
+ .regshift = 2,
+ .iotype = UPIO_MEM,
+ .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP | UPF_SKIP_TEST,
+ },
+ {
+ .mapbase = 0x03010be0,
+ .irq = 0,
+ .uartclk = 1843200,
+ .regshift = 2,
+ .iotype = UPIO_MEM,
+ .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP | UPF_SKIP_TEST,
+ },
+ {
+ .iobase = ISASLOT_IO + 0x2e8,
+ .irq = 41,
+ .uartclk = 1843200,
+ .regshift = 0,
+ .iotype = UPIO_PORT,
+ .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
+ },
+ {
+ .iobase = ISASLOT_IO + 0x3e8,
+ .irq = 40,
+ .uartclk = 1843200,
+ .regshift = 0,
+ .iotype = UPIO_PORT,
+ .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
+ },
+ { },
+};
+
+static struct platform_device serial_device = {
+ .name = "serial8250",
+ .id = 0,
+ .dev = {
+ .platform_data = serial_platform_data,
+ },
+};
+
+static void __init clps7500_init(void)
+{
+ platform_device_register(&serial_device);
+}
+
+MACHINE_START(CLPS7500, "CL-PS7500")
+ MAINTAINER("Philip Blundell")
+ BOOT_MEM(0x10000000, 0x03000000, 0xe0000000)
+ MAPIO(clps7500_map_io)
+ INITIRQ(clps7500_init_irq)
+ .init_machine = clps7500_init,
+ .timer = &clps7500_timer,
+MACHINE_END
+
generated by cgit v1.1 at 2024-11-10 12:46:25 +0000