2 * linux/arch/arm/mm/mm-lusl7200.c
4 * Copyright (C) 2000 Steve Hill (sjhill@cotw.com)
6 * Extra MM routines for L7200 architecture
8 #include <linux/kernel.h>
9 #include <linux/init.h>
11 #include <asm/hardware.h>
14 #include <asm/mach/map.h>
19 #define IRQ_BASE (IO_BASE_2 + 0x1000)
22 * Normal IRQ registers
24 #define IRQ_STATUS (*(volatile unsigned long *) (IRQ_BASE + 0x000))
25 #define IRQ_RAWSTATUS (*(volatile unsigned long *) (IRQ_BASE + 0x004))
26 #define IRQ_ENABLE (*(volatile unsigned long *) (IRQ_BASE + 0x008))
27 #define IRQ_ENABLECLEAR (*(volatile unsigned long *) (IRQ_BASE + 0x00c))
28 #define IRQ_SOFT (*(volatile unsigned long *) (IRQ_BASE + 0x010))
29 #define IRQ_SOURCESEL (*(volatile unsigned long *) (IRQ_BASE + 0x018))
34 #define FIQ_STATUS (*(volatile unsigned long *) (IRQ_BASE + 0x100))
35 #define FIQ_RAWSTATUS (*(volatile unsigned long *) (IRQ_BASE + 0x104))
36 #define FIQ_ENABLE (*(volatile unsigned long *) (IRQ_BASE + 0x108))
37 #define FIQ_ENABLECLEAR (*(volatile unsigned long *) (IRQ_BASE + 0x10c))
38 #define FIQ_SOFT (*(volatile unsigned long *) (IRQ_BASE + 0x110))
39 #define FIQ_SOURCESEL (*(volatile unsigned long *) (IRQ_BASE + 0x118))
41 static void l7200_mask_irq(unsigned int irq)
43 IRQ_ENABLECLEAR = 1 << irq;
46 static void l7200_unmask_irq(unsigned int irq)
48 IRQ_ENABLE = 1 << irq;
51 static void __init l7200_init_irq(void)
55 IRQ_ENABLECLEAR = 0xffffffff; /* clear all interrupt enables */
56 FIQ_ENABLECLEAR = 0xffffffff; /* clear all fast interrupt enables */
58 for (irq = 0; irq < NR_IRQS; irq++) {
59 irq_desc[irq].valid = 1;
60 irq_desc[irq].probe_ok = 1;
61 irq_desc[irq].mask_ack = l7200_mask_irq;
62 irq_desc[irq].mask = l7200_mask_irq;
63 irq_desc[irq].unmask = l7200_unmask_irq;
69 static struct map_desc l7200_io_desc[] __initdata = {
70 { IO_BASE, IO_START, IO_SIZE, MT_DEVICE },
71 { IO_BASE_2, IO_START_2, IO_SIZE_2, MT_DEVICE },
72 { AUX_BASE, AUX_START, AUX_SIZE, MT_DEVICE },
73 { FLASH1_BASE, FLASH1_START, FLASH1_SIZE, MT_DEVICE },
74 { FLASH2_BASE, FLASH2_START, FLASH2_SIZE, MT_DEVICE }
77 static void __init l7200_map_io(void)
79 iotable_init(l7200_io_desc, ARRAY_SIZE(l7200_io_desc));
82 MACHINE_START(L7200, "LinkUp Systems L7200")
83 /* Maintainer: Steve Hill / Scott McConnell */
84 .phys_ram = 0xf0000000,
85 .phys_io = 0x80040000,
86 .io_pg_offst = ((0xd0000000) >> 18) & 0xfffc,
87 .map_io = l7200_map_io,
88 .init_irq = l7200_init_irq,