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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * linux/arch/arm/mach-rpc/riscpc.c
3 *
4 * Copyright (C) 1998-2001 Russell King
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 * Architecture specific fixups.
11 */
12#include <linux/kernel.h>
13#include <linux/tty.h>
14#include <linux/delay.h>
15#include <linux/pm.h>
16#include <linux/init.h>
17#include <linux/sched.h>
18#include <linux/device.h>
19#include <linux/serial_8250.h>
Jeff Garzik0a87e3e2008-02-01 18:02:30 -050020#include <linux/ata_platform.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070021
22#include <asm/elf.h>
23#include <asm/io.h>
24#include <asm/mach-types.h>
Russell Kinga09e64f2008-08-05 16:14:15 +010025#include <mach/hardware.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070026#include <asm/page.h>
27#include <asm/domain.h>
28#include <asm/setup.h>
29
30#include <asm/mach/map.h>
31#include <asm/mach/arch.h>
32#include <asm/mach/time.h>
33
34extern void rpc_init_irq(void);
35
Russell Kingebe2a9f2005-06-22 09:55:04 +010036unsigned int vram_size;
Linus Torvalds1da177e2005-04-16 15:20:36 -070037unsigned int memc_ctrl_reg;
38unsigned int number_mfm_drives;
39
40static int __init parse_tag_acorn(const struct tag *tag)
41{
42 memc_ctrl_reg = tag->u.acorn.memc_control_reg;
43 number_mfm_drives = tag->u.acorn.adfsdrives;
44
45 switch (tag->u.acorn.vram_pages) {
46 case 512:
47 vram_size += PAGE_SIZE * 256;
48 case 256:
49 vram_size += PAGE_SIZE * 256;
50 default:
51 break;
52 }
53#if 0
54 if (vram_size) {
55 desc->video_start = 0x02000000;
56 desc->video_end = 0x02000000 + vram_size;
57 }
58#endif
59 return 0;
60}
61
62__tagtable(ATAG_ACORN, parse_tag_acorn);
63
Linus Torvalds1da177e2005-04-16 15:20:36 -070064static struct map_desc rpc_io_desc[] __initdata = {
Deepak Saxenaf9258f22005-10-28 15:19:02 +010065 { /* VRAM */
66 .virtual = SCREEN_BASE,
67 .pfn = __phys_to_pfn(SCREEN_START),
68 .length = 2*1048576,
69 .type = MT_DEVICE
70 }, { /* IO space */
71 .virtual = (u32)IO_BASE,
72 .pfn = __phys_to_pfn(IO_START),
73 .length = IO_SIZE ,
74 .type = MT_DEVICE
75 }, { /* EASI space */
76 .virtual = EASI_BASE,
77 .pfn = __phys_to_pfn(EASI_START),
78 .length = EASI_SIZE,
79 .type = MT_DEVICE
80 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070081};
82
83static void __init rpc_map_io(void)
84{
85 iotable_init(rpc_io_desc, ARRAY_SIZE(rpc_io_desc));
86
87 /*
88 * Turn off floppy.
89 */
Russell King13a63ab2007-07-20 10:44:02 +010090 writeb(0xc, PCIO_BASE + (0x3f2 << 2));
Linus Torvalds1da177e2005-04-16 15:20:36 -070091
92 /*
93 * RiscPC can't handle half-word loads and stores
94 */
95 elf_hwcap &= ~HWCAP_HALF;
96}
97
98static struct resource acornfb_resources[] = {
99 { /* VIDC */
100 .start = 0x03400000,
101 .end = 0x035fffff,
102 .flags = IORESOURCE_MEM,
103 }, {
104 .start = IRQ_VSYNCPULSE,
105 .end = IRQ_VSYNCPULSE,
106 .flags = IORESOURCE_IRQ,
107 },
108};
109
110static struct platform_device acornfb_device = {
111 .name = "acornfb",
112 .id = -1,
113 .dev = {
114 .coherent_dma_mask = 0xffffffff,
115 },
116 .num_resources = ARRAY_SIZE(acornfb_resources),
117 .resource = acornfb_resources,
118};
119
120static struct resource iomd_resources[] = {
121 {
122 .start = 0x03200000,
123 .end = 0x0320ffff,
124 .flags = IORESOURCE_MEM,
125 },
126};
127
128static struct platform_device iomd_device = {
129 .name = "iomd",
130 .id = -1,
131 .num_resources = ARRAY_SIZE(iomd_resources),
132 .resource = iomd_resources,
133};
134
135static struct platform_device kbd_device = {
136 .name = "kart",
137 .id = -1,
138 .dev = {
139 .parent = &iomd_device.dev,
140 },
141};
142
143static struct plat_serial8250_port serial_platform_data[] = {
144 {
145 .mapbase = 0x03010fe0,
146 .irq = 10,
147 .uartclk = 1843200,
148 .regshift = 2,
149 .iotype = UPIO_MEM,
150 .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP | UPF_SKIP_TEST,
151 },
152 { },
153};
154
155static struct platform_device serial_device = {
156 .name = "serial8250",
Russell King6df29de2005-09-08 16:04:41 +0100157 .id = PLAT8250_DEV_PLATFORM,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700158 .dev = {
159 .platform_data = serial_platform_data,
160 },
161};
162
Russell Kinga17dba82007-04-21 15:55:06 +0100163static struct pata_platform_info pata_platform_data = {
164 .ioport_shift = 2,
165};
166
167static struct resource pata_resources[] = {
168 [0] = {
169 .start = 0x030107c0,
170 .end = 0x030107df,
171 .flags = IORESOURCE_MEM,
172 },
173 [1] = {
174 .start = 0x03010fd8,
175 .end = 0x03010fdb,
176 .flags = IORESOURCE_MEM,
177 },
178 [2] = {
179 .start = IRQ_HARDDISK,
180 .end = IRQ_HARDDISK,
181 .flags = IORESOURCE_IRQ,
182 },
183};
184
185static struct platform_device pata_device = {
186 .name = "pata_platform",
187 .id = -1,
188 .num_resources = ARRAY_SIZE(pata_resources),
189 .resource = pata_resources,
190 .dev = {
191 .platform_data = &pata_platform_data,
192 .coherent_dma_mask = ~0, /* grumble */
193 },
194};
195
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196static struct platform_device *devs[] __initdata = {
197 &iomd_device,
198 &kbd_device,
199 &serial_device,
200 &acornfb_device,
Russell Kinga17dba82007-04-21 15:55:06 +0100201 &pata_device,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202};
203
204static int __init rpc_init(void)
205{
206 return platform_add_devices(devs, ARRAY_SIZE(devs));
207}
208
209arch_initcall(rpc_init);
210
211extern struct sys_timer ioc_timer;
212
213MACHINE_START(RISCPC, "Acorn-RiscPC")
Russell Kinge9dea0c2005-07-03 17:38:58 +0100214 /* Maintainer: Russell King */
Russell Kinge9dea0c2005-07-03 17:38:58 +0100215 .phys_io = 0x03000000,
216 .io_pg_offst = ((0xe0000000) >> 18) & 0xfffc,
217 .boot_params = 0x10000100,
218 .reserve_lp0 = 1,
219 .reserve_lp1 = 1,
220 .map_io = rpc_map_io,
221 .init_irq = rpc_init_irq,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222 .timer = &ioc_timer,
223MACHINE_END