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-rw-r--r--arch/mips/alchemy/devboards/platform.c222
1 files changed, 222 insertions, 0 deletions
diff --git a/arch/mips/alchemy/devboards/platform.c b/arch/mips/alchemy/devboards/platform.c
new file mode 100644
index 000000000000..49a4b3244d8e
--- /dev/null
+++ b/arch/mips/alchemy/devboards/platform.c
@@ -0,0 +1,222 @@
1/*
2 * devoard misc stuff.
3 */
4
5#include <linux/init.h>
6#include <linux/mtd/mtd.h>
7#include <linux/mtd/map.h>
8#include <linux/mtd/physmap.h>
9#include <linux/slab.h>
10#include <linux/platform_device.h>
11#include <linux/pm.h>
12
13#include <asm/reboot.h>
14#include <asm/mach-db1x00/bcsr.h>
15
16static void db1x_power_off(void)
17{
18 bcsr_write(BCSR_RESETS, 0);
19 bcsr_write(BCSR_SYSTEM, BCSR_SYSTEM_PWROFF | BCSR_SYSTEM_RESET);
20}
21
22static void db1x_reset(char *c)
23{
24 bcsr_write(BCSR_RESETS, 0);
25 bcsr_write(BCSR_SYSTEM, 0);
26}
27
28static int __init db1x_poweroff_setup(void)
29{
30 if (!pm_power_off)
31 pm_power_off = db1x_power_off;
32 if (!_machine_halt)
33 _machine_halt = db1x_power_off;
34 if (!_machine_restart)
35 _machine_restart = db1x_reset;
36
37 return 0;
38}
39late_initcall(db1x_poweroff_setup);
40
41/* register a pcmcia socket */
42int __init db1x_register_pcmcia_socket(phys_addr_t pcmcia_attr_start,
43 phys_addr_t pcmcia_attr_end,
44 phys_addr_t pcmcia_mem_start,
45 phys_addr_t pcmcia_mem_end,
46 phys_addr_t pcmcia_io_start,
47 phys_addr_t pcmcia_io_end,
48 int card_irq,
49 int cd_irq,
50 int stschg_irq,
51 int eject_irq,
52 int id)
53{
54 int cnt, i, ret;
55 struct resource *sr;
56 struct platform_device *pd;
57
58 cnt = 5;
59 if (eject_irq)
60 cnt++;
61 if (stschg_irq)
62 cnt++;
63
64 sr = kzalloc(sizeof(struct resource) * cnt, GFP_KERNEL);
65 if (!sr)
66 return -ENOMEM;
67
68 pd = platform_device_alloc("db1xxx_pcmcia", id);
69 if (!pd) {
70 ret = -ENOMEM;
71 goto out;
72 }
73
74 sr[0].name = "pcmcia-attr";
75 sr[0].flags = IORESOURCE_MEM;
76 sr[0].start = pcmcia_attr_start;
77 sr[0].end = pcmcia_attr_end;
78
79 sr[1].name = "pcmcia-mem";
80 sr[1].flags = IORESOURCE_MEM;
81 sr[1].start = pcmcia_mem_start;
82 sr[1].end = pcmcia_mem_end;
83
84 sr[2].name = "pcmcia-io";
85 sr[2].flags = IORESOURCE_MEM;
86 sr[2].start = pcmcia_io_start;
87 sr[2].end = pcmcia_io_end;
88
89 sr[3].name = "insert";
90 sr[3].flags = IORESOURCE_IRQ;
91 sr[3].start = sr[3].end = cd_irq;
92
93 sr[4].name = "card";
94 sr[4].flags = IORESOURCE_IRQ;
95 sr[4].start = sr[4].end = card_irq;
96
97 i = 5;
98 if (stschg_irq) {
99 sr[i].name = "stschg";
100 sr[i].flags = IORESOURCE_IRQ;
101 sr[i].start = sr[i].end = stschg_irq;
102 i++;
103 }
104 if (eject_irq) {
105 sr[i].name = "eject";
106 sr[i].flags = IORESOURCE_IRQ;
107 sr[i].start = sr[i].end = eject_irq;
108 }
109
110 pd->resource = sr;
111 pd->num_resources = cnt;
112
113 ret = platform_device_add(pd);
114 if (!ret)
115 return 0;
116
117 platform_device_put(pd);
118out:
119 kfree(sr);
120 return ret;
121}
122
123#define YAMON_SIZE 0x00100000
124#define YAMON_ENV_SIZE 0x00040000
125
126int __init db1x_register_norflash(unsigned long size, int width,
127 int swapped)
128{
129 struct physmap_flash_data *pfd;
130 struct platform_device *pd;
131 struct mtd_partition *parts;
132 struct resource *res;
133 int ret, i;
134
135 if (size < (8 * 1024 * 1024))
136 return -EINVAL;
137
138 ret = -ENOMEM;
139 parts = kzalloc(sizeof(struct mtd_partition) * 5, GFP_KERNEL);
140 if (!parts)
141 goto out;
142
143 res = kzalloc(sizeof(struct resource), GFP_KERNEL);
144 if (!res)
145 goto out1;
146
147 pfd = kzalloc(sizeof(struct physmap_flash_data), GFP_KERNEL);
148 if (!pfd)
149 goto out2;
150
151 pd = platform_device_alloc("physmap-flash", 0);
152 if (!pd)
153 goto out3;
154
155 /* NOR flash ends at 0x20000000, regardless of size */
156 res->start = 0x20000000 - size;
157 res->end = 0x20000000 - 1;
158 res->flags = IORESOURCE_MEM;
159
160 /* partition setup. Most Develboards have a switch which allows
161 * to swap the physical locations of the 2 NOR flash banks.
162 */
163 i = 0;
164 if (!swapped) {
165 /* first NOR chip */
166 parts[i].offset = 0;
167 parts[i].name = "User FS";
168 parts[i].size = size / 2;
169 i++;
170 }
171
172 parts[i].offset = MTDPART_OFS_APPEND;
173 parts[i].name = "User FS 2";
174 parts[i].size = (size / 2) - (0x20000000 - 0x1fc00000);
175 i++;
176
177 parts[i].offset = MTDPART_OFS_APPEND;
178 parts[i].name = "YAMON";
179 parts[i].size = YAMON_SIZE;
180 parts[i].mask_flags = MTD_WRITEABLE;
181 i++;
182
183 parts[i].offset = MTDPART_OFS_APPEND;
184 parts[i].name = "raw kernel";
185 parts[i].size = 0x00400000 - YAMON_SIZE - YAMON_ENV_SIZE;
186 i++;
187
188 parts[i].offset = MTDPART_OFS_APPEND;
189 parts[i].name = "YAMON Env";
190 parts[i].size = YAMON_ENV_SIZE;
191 parts[i].mask_flags = MTD_WRITEABLE;
192 i++;
193
194 if (swapped) {
195 parts[i].offset = MTDPART_OFS_APPEND;
196 parts[i].name = "User FS";
197 parts[i].size = size / 2;
198 i++;
199 }
200
201 pfd->width = width;
202 pfd->parts = parts;
203 pfd->nr_parts = 5;
204
205 pd->dev.platform_data = pfd;
206 pd->resource = res;
207 pd->num_resources = 1;
208
209 ret = platform_device_add(pd);
210 if (!ret)
211 return ret;
212
213 platform_device_put(pd);
214out3:
215 kfree(pfd);
216out2:
217 kfree(res);
218out1:
219 kfree(parts);
220out:
221 return ret;
222}
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