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Diffstat (limited to 'arch/arm/mach-l7200/core.c')
-rw-r--r--arch/arm/mach-l7200/core.c89
1 files changed, 89 insertions, 0 deletions
diff --git a/arch/arm/mach-l7200/core.c b/arch/arm/mach-l7200/core.c
new file mode 100644
index 000000000000..606ca95f8217
--- /dev/null
+++ b/arch/arm/mach-l7200/core.c
@@ -0,0 +1,89 @@
+/*
+ * linux/arch/arm/mm/mm-lusl7200.c
+ *
+ * Copyright (C) 2000 Steve Hill (sjhill@cotw.com)
+ *
+ * Extra MM routines for L7200 architecture
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+#include <asm/hardware.h>
+#include <asm/page.h>
+
+#include <asm/mach/map.h>
+#include <asm/arch/hardware.h>
+
+/*
+ * IRQ base register
+ */
+#define IRQ_BASE (IO_BASE_2 + 0x1000)
+
+/*
+ * Normal IRQ registers
+ */
+#define IRQ_STATUS (*(volatile unsigned long *) (IRQ_BASE + 0x000))
+#define IRQ_RAWSTATUS (*(volatile unsigned long *) (IRQ_BASE + 0x004))
+#define IRQ_ENABLE (*(volatile unsigned long *) (IRQ_BASE + 0x008))
+#define IRQ_ENABLECLEAR (*(volatile unsigned long *) (IRQ_BASE + 0x00c))
+#define IRQ_SOFT (*(volatile unsigned long *) (IRQ_BASE + 0x010))
+#define IRQ_SOURCESEL (*(volatile unsigned long *) (IRQ_BASE + 0x018))
+
+/*
+ * Fast IRQ registers
+ */
+#define FIQ_STATUS (*(volatile unsigned long *) (IRQ_BASE + 0x100))
+#define FIQ_RAWSTATUS (*(volatile unsigned long *) (IRQ_BASE + 0x104))
+#define FIQ_ENABLE (*(volatile unsigned long *) (IRQ_BASE + 0x108))
+#define FIQ_ENABLECLEAR (*(volatile unsigned long *) (IRQ_BASE + 0x10c))
+#define FIQ_SOFT (*(volatile unsigned long *) (IRQ_BASE + 0x110))
+#define FIQ_SOURCESEL (*(volatile unsigned long *) (IRQ_BASE + 0x118))
+
+static void l7200_mask_irq(unsigned int irq)
+{
+ IRQ_ENABLECLEAR = 1 << irq;
+}
+
+static void l7200_unmask_irq(unsigned int irq)
+{
+ IRQ_ENABLE = 1 << irq;
+}
+
+static void __init l7200_init_irq(void)
+{
+ int irq;
+
+ IRQ_ENABLECLEAR = 0xffffffff; /* clear all interrupt enables */
+ FIQ_ENABLECLEAR = 0xffffffff; /* clear all fast interrupt enables */
+
+ for (irq = 0; irq < NR_IRQS; irq++) {
+ irq_desc[irq].valid = 1;
+ irq_desc[irq].probe_ok = 1;
+ irq_desc[irq].mask_ack = l7200_mask_irq;
+ irq_desc[irq].mask = l7200_mask_irq;
+ irq_desc[irq].unmask = l7200_unmask_irq;
+ }
+
+ init_FIQ();
+}
+
+static struct map_desc l7200_io_desc[] __initdata = {
+ { IO_BASE, IO_START, IO_SIZE, MT_DEVICE },
+ { IO_BASE_2, IO_START_2, IO_SIZE_2, MT_DEVICE },
+ { AUX_BASE, AUX_START, AUX_SIZE, MT_DEVICE },
+ { FLASH1_BASE, FLASH1_START, FLASH1_SIZE, MT_DEVICE },
+ { FLASH2_BASE, FLASH2_START, FLASH2_SIZE, MT_DEVICE }
+};
+
+static void __init l7200_map_io(void)
+{
+ iotable_init(l7200_io_desc, ARRAY_SIZE(l7200_io_desc));
+}
+
+MACHINE_START(L7200, "LinkUp Systems L7200")
+ MAINTAINER("Steve Hill / Scott McConnell")
+ BOOT_MEM(0xf0000000, 0x80040000, 0xd0000000)
+ MAPIO(l7200_map_io)
+ INITIRQ(l7200_init_irq)
+MACHINE_END
+