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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#include <linux/i2c.h>
23
24#include <asm/elf.h>
25#include <asm/mach-types.h>
26#include <mach/hardware.h>
27#include <asm/page.h>
28#include <asm/domain.h>
29#include <asm/setup.h>
30
31#include <asm/mach/map.h>
32#include <asm/mach/arch.h>
33#include <asm/mach/time.h>
34
35extern void rpc_init_irq(void);
36
37unsigned int vram_size;
38unsigned int memc_ctrl_reg;
39unsigned int number_mfm_drives;
40
41static int __init parse_tag_acorn(const struct tag *tag)
42{
43 memc_ctrl_reg = tag->u.acorn.memc_control_reg;
44 number_mfm_drives = tag->u.acorn.adfsdrives;
45
46 switch (tag->u.acorn.vram_pages) {
47 case 512:
48 vram_size += PAGE_SIZE * 256;
49 case 256:
50 vram_size += PAGE_SIZE * 256;
51 default:
52 break;
53 }
54#if 0
55 if (vram_size) {
56 desc->video_start = 0x02000000;
57 desc->video_end = 0x02000000 + vram_size;
58 }
59#endif
60 return 0;
61}
62
63__tagtable(ATAG_ACORN, parse_tag_acorn);
64
65static struct map_desc rpc_io_desc[] __initdata = {
66 {
67 .virtual = SCREEN_BASE,
68 .pfn = __phys_to_pfn(SCREEN_START),
69 .length = 2*1048576,
70 .type = MT_DEVICE
71 }, {
72 .virtual = (u32)IO_BASE,
73 .pfn = __phys_to_pfn(IO_START),
74 .length = IO_SIZE ,
75 .type = MT_DEVICE
76 }, {
77 .virtual = EASI_BASE,
78 .pfn = __phys_to_pfn(EASI_START),
79 .length = EASI_SIZE,
80 .type = MT_DEVICE
81 }
82};
83
84static void __init rpc_map_io(void)
85{
86 iotable_init(rpc_io_desc, ARRAY_SIZE(rpc_io_desc));
87
88
89
90
91 writeb(0xc, PCIO_BASE + (0x3f2 << 2));
92
93
94
95
96 elf_hwcap &= ~HWCAP_HALF;
97}
98
99static struct resource acornfb_resources[] = {
100 {
101 .start = 0x03400000,
102 .end = 0x035fffff,
103 .flags = IORESOURCE_MEM,
104 }, {
105 .start = IRQ_VSYNCPULSE,
106 .end = IRQ_VSYNCPULSE,
107 .flags = IORESOURCE_IRQ,
108 },
109};
110
111static struct platform_device acornfb_device = {
112 .name = "acornfb",
113 .id = -1,
114 .dev = {
115 .coherent_dma_mask = 0xffffffff,
116 },
117 .num_resources = ARRAY_SIZE(acornfb_resources),
118 .resource = acornfb_resources,
119};
120
121static struct resource iomd_resources[] = {
122 {
123 .start = 0x03200000,
124 .end = 0x0320ffff,
125 .flags = IORESOURCE_MEM,
126 },
127};
128
129static struct platform_device iomd_device = {
130 .name = "iomd",
131 .id = -1,
132 .num_resources = ARRAY_SIZE(iomd_resources),
133 .resource = iomd_resources,
134};
135
136static struct platform_device kbd_device = {
137 .name = "kart",
138 .id = -1,
139 .dev = {
140 .parent = &iomd_device.dev,
141 },
142};
143
144static struct plat_serial8250_port serial_platform_data[] = {
145 {
146 .mapbase = 0x03010fe0,
147 .irq = 10,
148 .uartclk = 1843200,
149 .regshift = 2,
150 .iotype = UPIO_MEM,
151 .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP | UPF_SKIP_TEST,
152 },
153 { },
154};
155
156static struct platform_device serial_device = {
157 .name = "serial8250",
158 .id = PLAT8250_DEV_PLATFORM,
159 .dev = {
160 .platform_data = serial_platform_data,
161 },
162};
163
164static struct pata_platform_info pata_platform_data = {
165 .ioport_shift = 2,
166};
167
168static struct resource pata_resources[] = {
169 [0] = {
170 .start = 0x030107c0,
171 .end = 0x030107df,
172 .flags = IORESOURCE_MEM,
173 },
174 [1] = {
175 .start = 0x03010fd8,
176 .end = 0x03010fdb,
177 .flags = IORESOURCE_MEM,
178 },
179 [2] = {
180 .start = IRQ_HARDDISK,
181 .end = IRQ_HARDDISK,
182 .flags = IORESOURCE_IRQ,
183 },
184};
185
186static struct platform_device pata_device = {
187 .name = "pata_platform",
188 .id = -1,
189 .num_resources = ARRAY_SIZE(pata_resources),
190 .resource = pata_resources,
191 .dev = {
192 .platform_data = &pata_platform_data,
193 .coherent_dma_mask = ~0,
194 },
195};
196
197static struct platform_device *devs[] __initdata = {
198 &iomd_device,
199 &kbd_device,
200 &serial_device,
201 &acornfb_device,
202 &pata_device,
203};
204
205static struct i2c_board_info i2c_rtc = {
206 I2C_BOARD_INFO("pcf8583", 0x50)
207};
208
209static int __init rpc_init(void)
210{
211 i2c_register_board_info(0, &i2c_rtc, 1);
212 return platform_add_devices(devs, ARRAY_SIZE(devs));
213}
214
215arch_initcall(rpc_init);
216
217extern struct sys_timer ioc_timer;
218
219MACHINE_START(RISCPC, "Acorn-RiscPC")
220
221 .phys_io = 0x03000000,
222 .io_pg_offst = ((0xe0000000) >> 18) & 0xfffc,
223 .boot_params = 0x10000100,
224 .reserve_lp0 = 1,
225 .reserve_lp1 = 1,
226 .map_io = rpc_map_io,
227 .init_irq = rpc_init_irq,
228 .timer = &ioc_timer,
229MACHINE_END
230
