| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * linux/arch/arm/mm/mm-lusl7200.c |
| 3 | * |
| 4 | * Copyright (C) 2000 Steve Hill (sjhill@cotw.com) |
| 5 | * |
| 6 | * Extra MM routines for L7200 architecture |
| 7 | */ |
| 8 | #include <linux/kernel.h> |
| 9 | #include <linux/init.h> |
| 10 | |
| 11 | #include <asm/hardware.h> |
| 12 | #include <asm/page.h> |
| 13 | |
| 14 | #include <asm/mach/map.h> |
| 15 | #include <asm/arch/hardware.h> |
| 16 | |
| 17 | /* |
| 18 | * IRQ base register |
| 19 | */ |
| 20 | #define IRQ_BASE (IO_BASE_2 + 0x1000) |
| 21 | |
| 22 | /* |
| 23 | * Normal IRQ registers |
| 24 | */ |
| 25 | #define IRQ_STATUS (*(volatile unsigned long *) (IRQ_BASE + 0x000)) |
| 26 | #define IRQ_RAWSTATUS (*(volatile unsigned long *) (IRQ_BASE + 0x004)) |
| 27 | #define IRQ_ENABLE (*(volatile unsigned long *) (IRQ_BASE + 0x008)) |
| 28 | #define IRQ_ENABLECLEAR (*(volatile unsigned long *) (IRQ_BASE + 0x00c)) |
| 29 | #define IRQ_SOFT (*(volatile unsigned long *) (IRQ_BASE + 0x010)) |
| 30 | #define IRQ_SOURCESEL (*(volatile unsigned long *) (IRQ_BASE + 0x018)) |
| 31 | |
| 32 | /* |
| 33 | * Fast IRQ registers |
| 34 | */ |
| 35 | #define FIQ_STATUS (*(volatile unsigned long *) (IRQ_BASE + 0x100)) |
| 36 | #define FIQ_RAWSTATUS (*(volatile unsigned long *) (IRQ_BASE + 0x104)) |
| 37 | #define FIQ_ENABLE (*(volatile unsigned long *) (IRQ_BASE + 0x108)) |
| 38 | #define FIQ_ENABLECLEAR (*(volatile unsigned long *) (IRQ_BASE + 0x10c)) |
| 39 | #define FIQ_SOFT (*(volatile unsigned long *) (IRQ_BASE + 0x110)) |
| 40 | #define FIQ_SOURCESEL (*(volatile unsigned long *) (IRQ_BASE + 0x118)) |
| 41 | |
| 42 | static void l7200_mask_irq(unsigned int irq) |
| 43 | { |
| 44 | IRQ_ENABLECLEAR = 1 << irq; |
| 45 | } |
| 46 | |
| 47 | static void l7200_unmask_irq(unsigned int irq) |
| 48 | { |
| 49 | IRQ_ENABLE = 1 << irq; |
| 50 | } |
| 51 | |
| 52 | static void __init l7200_init_irq(void) |
| 53 | { |
| 54 | int irq; |
| 55 | |
| 56 | IRQ_ENABLECLEAR = 0xffffffff; /* clear all interrupt enables */ |
| 57 | FIQ_ENABLECLEAR = 0xffffffff; /* clear all fast interrupt enables */ |
| 58 | |
| 59 | for (irq = 0; irq < NR_IRQS; irq++) { |
| 60 | irq_desc[irq].valid = 1; |
| 61 | irq_desc[irq].probe_ok = 1; |
| 62 | irq_desc[irq].mask_ack = l7200_mask_irq; |
| 63 | irq_desc[irq].mask = l7200_mask_irq; |
| 64 | irq_desc[irq].unmask = l7200_unmask_irq; |
| 65 | } |
| 66 | |
| 67 | init_FIQ(); |
| 68 | } |
| 69 | |
| 70 | static struct map_desc l7200_io_desc[] __initdata = { |
| 71 | { IO_BASE, IO_START, IO_SIZE, MT_DEVICE }, |
| 72 | { IO_BASE_2, IO_START_2, IO_SIZE_2, MT_DEVICE }, |
| 73 | { AUX_BASE, AUX_START, AUX_SIZE, MT_DEVICE }, |
| 74 | { FLASH1_BASE, FLASH1_START, FLASH1_SIZE, MT_DEVICE }, |
| 75 | { FLASH2_BASE, FLASH2_START, FLASH2_SIZE, MT_DEVICE } |
| 76 | }; |
| 77 | |
| 78 | static void __init l7200_map_io(void) |
| 79 | { |
| 80 | iotable_init(l7200_io_desc, ARRAY_SIZE(l7200_io_desc)); |
| 81 | } |
| 82 | |
| 83 | MACHINE_START(L7200, "LinkUp Systems L7200") |
| 84 | MAINTAINER("Steve Hill / Scott McConnell") |
| 85 | BOOT_MEM(0xf0000000, 0x80040000, 0xd0000000) |
| 86 | MAPIO(l7200_map_io) |
| 87 | INITIRQ(l7200_init_irq) |
| 88 | MACHINE_END |
| 89 | |