summaryrefslogtreecommitdiffstats
path: root/arch/mips/alchemy/devboards/platform.c
blob: 4640edab207c4cb5a3a1c44e4f7255669eaf344e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
// SPDX-License-Identifier: GPL-2.0
/*
 * devoard misc stuff.
 */

#include <linux/init.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
#include <linux/mtd/physmap.h>
#include <linux/slab.h>
#include <linux/platform_device.h>
#include <linux/pm.h>

#include <asm/bootinfo.h>
#include <asm/idle.h>
#include <asm/reboot.h>
#include <asm/mach-au1x00/au1000.h>
#include <asm/mach-db1x00/bcsr.h>

#include <prom.h>

void __init prom_init(void)
{
	unsigned char *memsize_str;
	unsigned long memsize;

	prom_argc = (int)fw_arg0;
	prom_argv = (char **)fw_arg1;
	prom_envp = (char **)fw_arg2;

	prom_init_cmdline();
	memsize_str = prom_getenv("memsize");
	if (!memsize_str || kstrtoul(memsize_str, 0, &memsize))
		memsize = 64 << 20; /* all devboards have at least 64MB RAM */

	add_memory_region(0, memsize, BOOT_MEM_RAM);
}

void prom_putchar(unsigned char c)
{
	if (alchemy_get_cputype() == ALCHEMY_CPU_AU1300)
		alchemy_uart_putchar(AU1300_UART2_PHYS_ADDR, c);
	else
		alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c);
}


static struct platform_device db1x00_rtc_dev = {
	.name	= "rtc-au1xxx",
	.id	= -1,
};


static void db1x_power_off(void)
{
	bcsr_write(BCSR_RESETS, 0);
	bcsr_write(BCSR_SYSTEM, BCSR_SYSTEM_PWROFF | BCSR_SYSTEM_RESET);
	while (1)		/* sit and spin */
		cpu_wait();
}

static void db1x_reset(char *c)
{
	bcsr_write(BCSR_RESETS, 0);
	bcsr_write(BCSR_SYSTEM, 0);
}

static int __init db1x_late_setup(void)
{
	if (!pm_power_off)
		pm_power_off = db1x_power_off;
	if (!_machine_halt)
		_machine_halt = db1x_power_off;
	if (!_machine_restart)
		_machine_restart = db1x_reset;

	platform_device_register(&db1x00_rtc_dev);

	return 0;
}
device_initcall(db1x_late_setup);

/* register a pcmcia socket */
int __init db1x_register_pcmcia_socket(phys_addr_t pcmcia_attr_start,
				       phys_addr_t pcmcia_attr_end,
				       phys_addr_t pcmcia_mem_start,
				       phys_addr_t pcmcia_mem_end,
				       phys_addr_t pcmcia_io_start,
				       phys_addr_t pcmcia_io_end,
				       int card_irq,
				       int cd_irq,
				       int stschg_irq,
				       int eject_irq,
				       int id)
{
	int cnt, i, ret;
	struct resource *sr;
	struct platform_device *pd;

	cnt = 5;
	if (eject_irq)
		cnt++;
	if (stschg_irq)
		cnt++;

	sr = kzalloc(sizeof(struct resource) * cnt, GFP_KERNEL);
	if (!sr)
		return -ENOMEM;

	pd = platform_device_alloc("db1xxx_pcmcia", id);
	if (!pd) {
		ret = -ENOMEM;
		goto out;
	}

	sr[0].name	= "pcmcia-attr";
	sr[0].flags	= IORESOURCE_MEM;
	sr[0].start	= pcmcia_attr_start;
	sr[0].end	= pcmcia_attr_end;

	sr[1].name	= "pcmcia-mem";
	sr[1].flags	= IORESOURCE_MEM;
	sr[1].start	= pcmcia_mem_start;
	sr[1].end	= pcmcia_mem_end;

	sr[2].name	= "pcmcia-io";
	sr[2].flags	= IORESOURCE_MEM;
	sr[2].start	= pcmcia_io_start;
	sr[2].end	= pcmcia_io_end;

	sr[3].name	= "insert";
	sr[3].flags	= IORESOURCE_IRQ;
	sr[3].start = sr[3].end = cd_irq;

	sr[4].name	= "card";
	sr[4].flags	= IORESOURCE_IRQ;
	sr[4].start = sr[4].end = card_irq;

	i = 5;
	if (stschg_irq) {
		sr[i].name	= "stschg";
		sr[i].flags	= IORESOURCE_IRQ;
		sr[i].start = sr[i].end = stschg_irq;
		i++;
	}
	if (eject_irq) {
		sr[i].name	= "eject";
		sr[i].flags	= IORESOURCE_IRQ;
		sr[i].start = sr[i].end = eject_irq;
	}

	pd->resource = sr;
	pd->num_resources = cnt;

	ret = platform_device_add(pd);
	if (!ret)
		return 0;

	platform_device_put(pd);
out:
	kfree(sr);
	return ret;
}

#define YAMON_SIZE	0x00100000
#define YAMON_ENV_SIZE	0x00040000

int __init db1x_register_norflash(unsigned long size, int width,
				  int swapped)
{
	struct physmap_flash_data *pfd;
	struct platform_device *pd;
	struct mtd_partition *parts;
	struct resource *res;
	int ret, i;

	if (size < (8 * 1024 * 1024))
		return -EINVAL;

	ret = -ENOMEM;
	parts = kzalloc(sizeof(struct mtd_partition) * 5, GFP_KERNEL);
	if (!parts)
		goto out;

	res = kzalloc(sizeof(struct resource), GFP_KERNEL);
	if (!res)
		goto out1;

	pfd = kzalloc(sizeof(struct physmap_flash_data), GFP_KERNEL);
	if (!pfd)
		goto out2;

	pd = platform_device_alloc("physmap-flash", 0);
	if (!pd)
		goto out3;

	/* NOR flash ends at 0x20000000, regardless of size */
	res->start = 0x20000000 - size;
	res->end = 0x20000000 - 1;
	res->flags = IORESOURCE_MEM;

	/* partition setup.  Most Develboards have a switch which allows
	 * to swap the physical locations of the 2 NOR flash banks.
	 */
	i = 0;
	if (!swapped) {
		/* first NOR chip */
		parts[i].offset = 0;
		parts[i].name = "User FS";
		parts[i].size = size / 2;
		i++;
	}

	parts[i].offset = MTDPART_OFS_APPEND;
	parts[i].name = "User FS 2";
	parts[i].size = (size / 2) - (0x20000000 - 0x1fc00000);
	i++;

	parts[i].offset = MTDPART_OFS_APPEND;
	parts[i].name = "YAMON";
	parts[i].size = YAMON_SIZE;
	parts[i].mask_flags = MTD_WRITEABLE;
	i++;

	parts[i].offset = MTDPART_OFS_APPEND;
	parts[i].name = "raw kernel";
	parts[i].size = 0x00400000 - YAMON_SIZE - YAMON_ENV_SIZE;
	i++;

	parts[i].offset = MTDPART_OFS_APPEND;
	parts[i].name = "YAMON Env";
	parts[i].size = YAMON_ENV_SIZE;
	parts[i].mask_flags = MTD_WRITEABLE;
	i++;

	if (swapped) {
		parts[i].offset = MTDPART_OFS_APPEND;
		parts[i].name = "User FS";
		parts[i].size = size / 2;
		i++;
	}

	pfd->width = width;
	pfd->parts = parts;
	pfd->nr_parts = 5;

	pd->dev.platform_data = pfd;
	pd->resource = res;
	pd->num_resources = 1;

	ret = platform_device_add(pd);
	if (!ret)
		return ret;

	platform_device_put(pd);
out3:
	kfree(pfd);
out2:
	kfree(res);
out1:
	kfree(parts);
out:
	return ret;
}