1 files changed, 374 insertions, 0 deletions
diff --git a/arch/arm/mach-clps7500/core.c b/arch/arm/mach-clps7500/core.c
new file mode 100644
index 000000000000..fdfededfd96f
--- /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
+