Merge branches 'topic/fix/hda' and 'topic/fix/misc' into for-linus
[linux-2.6] / arch / arm / mach-rpc / riscpc.c
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>
20 #include <linux/ata_platform.h>
21 #include <linux/io.h>
22
23 #include <asm/elf.h>
24 #include <asm/mach-types.h>
25 #include <mach/hardware.h>
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
36 unsigned int vram_size;
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
64 static struct map_desc rpc_io_desc[] __initdata = {
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         }
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          */
90         writeb(0xc, PCIO_BASE + (0x3f2 << 2));
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",
157         .id                     = PLAT8250_DEV_PLATFORM,
158         .dev                    = {
159                 .platform_data  = serial_platform_data,
160         },
161 };
162
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
196 static struct platform_device *devs[] __initdata = {
197         &iomd_device,
198         &kbd_device,
199         &serial_device,
200         &acornfb_device,
201         &pata_device,
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")
214         /* Maintainer: Russell King */
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,
222         .timer          = &ioc_timer,
223 MACHINE_END