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1da177e4 LT |
1 | /* |
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> | |
0a87e3e9 | 20 | #include <linux/ata_platform.h> |
1da177e4 LT |
21 | |
22 | #include <asm/elf.h> | |
23 | #include <asm/io.h> | |
24 | #include <asm/mach-types.h> | |
a09e64fb | 25 | #include <mach/hardware.h> |
1da177e4 LT |
26 | #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 | ||
34 | extern void rpc_init_irq(void); | |
35 | ||
ebe2a9ff | 36 | unsigned int vram_size; |
1da177e4 LT |
37 | unsigned int memc_ctrl_reg; |
38 | unsigned int number_mfm_drives; | |
39 | ||
40 | static 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 | ||
1da177e4 | 64 | static struct map_desc rpc_io_desc[] __initdata = { |
f9258f22 DS |
65 | { /* 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 | } | |
1da177e4 LT |
81 | }; |
82 | ||
83 | static 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 | */ | |
13a63ab2 | 90 | writeb(0xc, PCIO_BASE + (0x3f2 << 2)); |
1da177e4 LT |
91 | |
92 | /* | |
93 | * RiscPC can't handle half-word loads and stores | |
94 | */ | |
95 | elf_hwcap &= ~HWCAP_HALF; | |
96 | } | |
97 | ||
98 | static 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 | ||
110 | static 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 | ||
120 | static struct resource iomd_resources[] = { | |
121 | { | |
122 | .start = 0x03200000, | |
123 | .end = 0x0320ffff, | |
124 | .flags = IORESOURCE_MEM, | |
125 | }, | |
126 | }; | |
127 | ||
128 | static struct platform_device iomd_device = { | |
129 | .name = "iomd", | |
130 | .id = -1, | |
131 | .num_resources = ARRAY_SIZE(iomd_resources), | |
132 | .resource = iomd_resources, | |
133 | }; | |
134 | ||
135 | static struct platform_device kbd_device = { | |
136 | .name = "kart", | |
137 | .id = -1, | |
138 | .dev = { | |
139 | .parent = &iomd_device.dev, | |
140 | }, | |
141 | }; | |
142 | ||
143 | static 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 | ||
155 | static struct platform_device serial_device = { | |
156 | .name = "serial8250", | |
6df29deb | 157 | .id = PLAT8250_DEV_PLATFORM, |
1da177e4 LT |
158 | .dev = { |
159 | .platform_data = serial_platform_data, | |
160 | }, | |
161 | }; | |
162 | ||
a17dba8d RK |
163 | static struct pata_platform_info pata_platform_data = { |
164 | .ioport_shift = 2, | |
165 | }; | |
166 | ||
167 | static 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 | ||
185 | static 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 | ||
1da177e4 LT |
196 | static struct platform_device *devs[] __initdata = { |
197 | &iomd_device, | |
198 | &kbd_device, | |
199 | &serial_device, | |
200 | &acornfb_device, | |
a17dba8d | 201 | &pata_device, |
1da177e4 LT |
202 | }; |
203 | ||
204 | static int __init rpc_init(void) | |
205 | { | |
206 | return platform_add_devices(devs, ARRAY_SIZE(devs)); | |
207 | } | |
208 | ||
209 | arch_initcall(rpc_init); | |
210 | ||
211 | extern struct sys_timer ioc_timer; | |
212 | ||
213 | MACHINE_START(RISCPC, "Acorn-RiscPC") | |
e9dea0c6 | 214 | /* Maintainer: Russell King */ |
e9dea0c6 RK |
215 | .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, | |
1da177e4 LT |
222 | .timer = &ioc_timer, |
223 | MACHINE_END |