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21d08b9d JCPV |
1 | /* |
2 | * Copyright (C) 2007 Atmel Corporation. | |
3 | * Copyright (C) 2011 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | |
4 | * | |
5 | * Under GPLv2 | |
6 | */ | |
7 | ||
8 | #include <linux/module.h> | |
9 | #include <linux/io.h> | |
fb149f9e | 10 | #include <linux/mm.h> |
f22deee5 | 11 | #include <linux/pm.h> |
21d08b9d JCPV |
12 | |
13 | #include <asm/mach/map.h> | |
14 | ||
15 | #include <mach/hardware.h> | |
16 | #include <mach/cpu.h> | |
8c3583b6 JCPV |
17 | #include <mach/at91_dbgu.h> |
18 | #include <mach/at91_pmc.h> | |
f22deee5 | 19 | #include <mach/at91_shdwc.h> |
21d08b9d JCPV |
20 | |
21 | #include "soc.h" | |
22 | #include "generic.h" | |
23 | ||
8c3583b6 JCPV |
24 | struct at91_init_soc __initdata at91_boot_soc; |
25 | ||
26 | struct at91_socinfo at91_soc_initdata; | |
27 | EXPORT_SYMBOL(at91_soc_initdata); | |
28 | ||
29 | void __init at91rm9200_set_type(int type) | |
30 | { | |
31 | if (type == ARCH_REVISON_9200_PQFP) | |
8c3583b6 | 32 | at91_soc_initdata.subtype = AT91_SOC_RM9200_PQFP; |
3e90772f NF |
33 | else |
34 | at91_soc_initdata.subtype = AT91_SOC_RM9200_BGA; | |
35 | ||
36 | pr_info("AT91: filled in soc subtype: %s\n", | |
37 | at91_get_soc_subtype(&at91_soc_initdata)); | |
8c3583b6 | 38 | } |
21d08b9d | 39 | |
92100c12 JCPV |
40 | void __init at91_init_irq_default(void) |
41 | { | |
42 | at91_init_interrupts(at91_boot_soc.default_irq_priority); | |
43 | } | |
44 | ||
45 | void __init at91_init_interrupts(unsigned int *priority) | |
46 | { | |
47 | /* Initialize the AIC interrupt controller */ | |
48 | at91_aic_init(priority); | |
49 | ||
50 | /* Enable GPIO interrupts */ | |
51 | at91_gpio_irq_setup(); | |
52 | } | |
53 | ||
f0051d82 JCPV |
54 | static struct map_desc sram_desc[2] __initdata; |
55 | ||
56 | void __init at91_init_sram(int bank, unsigned long base, unsigned int length) | |
57 | { | |
58 | struct map_desc *desc = &sram_desc[bank]; | |
59 | ||
60 | desc->virtual = AT91_IO_VIRT_BASE - length; | |
61 | if (bank > 0) | |
62 | desc->virtual -= sram_desc[bank - 1].length; | |
63 | ||
64 | desc->pfn = __phys_to_pfn(base); | |
65 | desc->length = length; | |
66 | desc->type = MT_DEVICE; | |
67 | ||
68 | pr_info("AT91: sram at 0x%lx of 0x%x mapped at 0x%lx\n", | |
69 | base, length, desc->virtual); | |
70 | ||
71 | iotable_init(desc, 1); | |
72 | } | |
73 | ||
21d08b9d JCPV |
74 | static struct map_desc at91_io_desc __initdata = { |
75 | .virtual = AT91_VA_BASE_SYS, | |
76 | .pfn = __phys_to_pfn(AT91_BASE_SYS), | |
77 | .length = SZ_16K, | |
78 | .type = MT_DEVICE, | |
79 | }; | |
80 | ||
8c3583b6 | 81 | static void __init soc_detect(u32 dbgu_base) |
21d08b9d | 82 | { |
8c3583b6 JCPV |
83 | u32 cidr, socid; |
84 | ||
85 | cidr = __raw_readl(AT91_IO_P2V(dbgu_base) + AT91_DBGU_CIDR); | |
86 | socid = cidr & ~AT91_CIDR_VERSION; | |
21d08b9d | 87 | |
8c3583b6 JCPV |
88 | switch (socid) { |
89 | case ARCH_ID_AT91CAP9: { | |
90 | #ifdef CONFIG_AT91_PMC_UNIT | |
91 | u32 pmc_ver = at91_sys_read(AT91_PMC_VER); | |
92 | ||
93 | if (pmc_ver == ARCH_REVISION_CAP9_B) | |
94 | at91_soc_initdata.subtype = AT91_SOC_CAP9_REV_B; | |
95 | else if (pmc_ver == ARCH_REVISION_CAP9_C) | |
96 | at91_soc_initdata.subtype = AT91_SOC_CAP9_REV_C; | |
97 | #endif | |
98 | at91_soc_initdata.type = AT91_SOC_CAP9; | |
21d08b9d | 99 | at91_boot_soc = at91cap9_soc; |
8c3583b6 JCPV |
100 | break; |
101 | } | |
102 | ||
103 | case ARCH_ID_AT91RM9200: | |
104 | at91_soc_initdata.type = AT91_SOC_RM9200; | |
21d08b9d | 105 | at91_boot_soc = at91rm9200_soc; |
8c3583b6 JCPV |
106 | break; |
107 | ||
108 | case ARCH_ID_AT91SAM9260: | |
109 | at91_soc_initdata.type = AT91_SOC_SAM9260; | |
21d08b9d | 110 | at91_boot_soc = at91sam9260_soc; |
8c3583b6 JCPV |
111 | break; |
112 | ||
113 | case ARCH_ID_AT91SAM9261: | |
114 | at91_soc_initdata.type = AT91_SOC_SAM9261; | |
21d08b9d | 115 | at91_boot_soc = at91sam9261_soc; |
8c3583b6 JCPV |
116 | break; |
117 | ||
118 | case ARCH_ID_AT91SAM9263: | |
119 | at91_soc_initdata.type = AT91_SOC_SAM9263; | |
21d08b9d | 120 | at91_boot_soc = at91sam9263_soc; |
8c3583b6 JCPV |
121 | break; |
122 | ||
123 | case ARCH_ID_AT91SAM9G20: | |
124 | at91_soc_initdata.type = AT91_SOC_SAM9G20; | |
21d08b9d | 125 | at91_boot_soc = at91sam9260_soc; |
8c3583b6 JCPV |
126 | break; |
127 | ||
128 | case ARCH_ID_AT91SAM9G45: | |
129 | at91_soc_initdata.type = AT91_SOC_SAM9G45; | |
130 | if (cidr == ARCH_ID_AT91SAM9G45ES) | |
131 | at91_soc_initdata.subtype = AT91_SOC_SAM9G45ES; | |
21d08b9d | 132 | at91_boot_soc = at91sam9g45_soc; |
8c3583b6 JCPV |
133 | break; |
134 | ||
135 | case ARCH_ID_AT91SAM9RL64: | |
136 | at91_soc_initdata.type = AT91_SOC_SAM9RL; | |
21d08b9d | 137 | at91_boot_soc = at91sam9rl_soc; |
8c3583b6 JCPV |
138 | break; |
139 | ||
140 | case ARCH_ID_AT91SAM9X5: | |
141 | at91_soc_initdata.type = AT91_SOC_SAM9X5; | |
21d08b9d | 142 | at91_boot_soc = at91sam9x5_soc; |
8c3583b6 JCPV |
143 | break; |
144 | } | |
145 | ||
146 | /* at91sam9g10 */ | |
147 | if ((cidr & ~AT91_CIDR_EXT) == ARCH_ID_AT91SAM9G10) { | |
148 | at91_soc_initdata.type = AT91_SOC_SAM9G10; | |
149 | at91_boot_soc = at91sam9261_soc; | |
150 | } | |
151 | /* at91sam9xe */ | |
152 | else if ((cidr & AT91_CIDR_ARCH) == ARCH_FAMILY_AT91SAM9XE) { | |
153 | at91_soc_initdata.type = AT91_SOC_SAM9260; | |
154 | at91_soc_initdata.subtype = AT91_SOC_SAM9XE; | |
155 | at91_boot_soc = at91sam9260_soc; | |
156 | } | |
157 | ||
158 | if (!at91_soc_is_detected()) | |
159 | return; | |
160 | ||
161 | at91_soc_initdata.cidr = cidr; | |
162 | ||
163 | /* sub version of soc */ | |
164 | at91_soc_initdata.exid = __raw_readl(AT91_IO_P2V(dbgu_base) + AT91_DBGU_EXID); | |
165 | ||
166 | if (at91_soc_initdata.type == AT91_SOC_SAM9G45) { | |
167 | switch (at91_soc_initdata.exid) { | |
168 | case ARCH_EXID_AT91SAM9M10: | |
169 | at91_soc_initdata.subtype = AT91_SOC_SAM9M10; | |
170 | break; | |
171 | case ARCH_EXID_AT91SAM9G46: | |
172 | at91_soc_initdata.subtype = AT91_SOC_SAM9G46; | |
173 | break; | |
174 | case ARCH_EXID_AT91SAM9M11: | |
175 | at91_soc_initdata.subtype = AT91_SOC_SAM9M11; | |
176 | break; | |
177 | } | |
178 | } | |
179 | ||
180 | if (at91_soc_initdata.type == AT91_SOC_SAM9X5) { | |
181 | switch (at91_soc_initdata.exid) { | |
182 | case ARCH_EXID_AT91SAM9G15: | |
183 | at91_soc_initdata.subtype = AT91_SOC_SAM9G15; | |
184 | break; | |
185 | case ARCH_EXID_AT91SAM9G35: | |
186 | at91_soc_initdata.subtype = AT91_SOC_SAM9G35; | |
187 | break; | |
188 | case ARCH_EXID_AT91SAM9X35: | |
189 | at91_soc_initdata.subtype = AT91_SOC_SAM9X35; | |
190 | break; | |
191 | case ARCH_EXID_AT91SAM9G25: | |
192 | at91_soc_initdata.subtype = AT91_SOC_SAM9G25; | |
193 | break; | |
194 | case ARCH_EXID_AT91SAM9X25: | |
195 | at91_soc_initdata.subtype = AT91_SOC_SAM9X25; | |
196 | break; | |
197 | } | |
198 | } | |
199 | } | |
200 | ||
201 | static const char *soc_name[] = { | |
202 | [AT91_SOC_RM9200] = "at91rm9200", | |
203 | [AT91_SOC_CAP9] = "at91cap9", | |
204 | [AT91_SOC_SAM9260] = "at91sam9260", | |
205 | [AT91_SOC_SAM9261] = "at91sam9261", | |
206 | [AT91_SOC_SAM9263] = "at91sam9263", | |
207 | [AT91_SOC_SAM9G10] = "at91sam9g10", | |
208 | [AT91_SOC_SAM9G20] = "at91sam9g20", | |
209 | [AT91_SOC_SAM9G45] = "at91sam9g45", | |
210 | [AT91_SOC_SAM9RL] = "at91sam9rl", | |
211 | [AT91_SOC_SAM9X5] = "at91sam9x5", | |
212 | [AT91_SOC_NONE] = "Unknown" | |
213 | }; | |
214 | ||
215 | const char *at91_get_soc_type(struct at91_socinfo *c) | |
216 | { | |
217 | return soc_name[c->type]; | |
218 | } | |
219 | EXPORT_SYMBOL(at91_get_soc_type); | |
220 | ||
221 | static const char *soc_subtype_name[] = { | |
222 | [AT91_SOC_RM9200_BGA] = "at91rm9200 BGA", | |
223 | [AT91_SOC_RM9200_PQFP] = "at91rm9200 PQFP", | |
224 | [AT91_SOC_CAP9_REV_B] = "at91cap9 revB", | |
225 | [AT91_SOC_CAP9_REV_C] = "at91cap9 revC", | |
226 | [AT91_SOC_SAM9XE] = "at91sam9xe", | |
227 | [AT91_SOC_SAM9G45ES] = "at91sam9g45es", | |
228 | [AT91_SOC_SAM9M10] = "at91sam9m10", | |
229 | [AT91_SOC_SAM9G46] = "at91sam9g46", | |
230 | [AT91_SOC_SAM9M11] = "at91sam9m11", | |
231 | [AT91_SOC_SAM9G15] = "at91sam9g15", | |
232 | [AT91_SOC_SAM9G35] = "at91sam9g35", | |
233 | [AT91_SOC_SAM9X35] = "at91sam9x35", | |
234 | [AT91_SOC_SAM9G25] = "at91sam9g25", | |
235 | [AT91_SOC_SAM9X25] = "at91sam9x25", | |
236 | [AT91_SOC_SUBTYPE_NONE] = "Unknown" | |
237 | }; | |
238 | ||
239 | const char *at91_get_soc_subtype(struct at91_socinfo *c) | |
240 | { | |
241 | return soc_subtype_name[c->subtype]; | |
242 | } | |
243 | EXPORT_SYMBOL(at91_get_soc_subtype); | |
244 | ||
245 | void __init at91_map_io(void) | |
246 | { | |
247 | /* Map peripherals */ | |
248 | iotable_init(&at91_io_desc, 1); | |
249 | ||
250 | at91_soc_initdata.type = AT91_SOC_NONE; | |
251 | at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_NONE; | |
252 | ||
13079a73 | 253 | soc_detect(AT91_BASE_DBGU0); |
8c3583b6 | 254 | if (!at91_soc_is_detected()) |
13079a73 | 255 | soc_detect(AT91_BASE_DBGU1); |
8c3583b6 JCPV |
256 | |
257 | if (!at91_soc_is_detected()) | |
258 | panic("AT91: Impossible to detect the SOC type"); | |
259 | ||
260 | pr_info("AT91: Detected soc type: %s\n", | |
261 | at91_get_soc_type(&at91_soc_initdata)); | |
262 | pr_info("AT91: Detected soc subtype: %s\n", | |
263 | at91_get_soc_subtype(&at91_soc_initdata)); | |
264 | ||
265 | if (!at91_soc_is_enabled()) | |
266 | panic("AT91: Soc not enabled"); | |
21d08b9d JCPV |
267 | |
268 | if (at91_boot_soc.map_io) | |
269 | at91_boot_soc.map_io(); | |
270 | } | |
271 | ||
f22deee5 JCPV |
272 | void __iomem *at91_shdwc_base = NULL; |
273 | ||
274 | static void at91sam9_poweroff(void) | |
275 | { | |
276 | at91_shdwc_write(AT91_SHDW_CR, AT91_SHDW_KEY | AT91_SHDW_SHDW); | |
277 | } | |
278 | ||
279 | void __init at91_ioremap_shdwc(u32 base_addr) | |
280 | { | |
281 | at91_shdwc_base = ioremap(base_addr, 16); | |
282 | if (!at91_shdwc_base) | |
283 | panic("Impossible to ioremap at91_shdwc_base\n"); | |
284 | pm_power_off = at91sam9_poweroff; | |
285 | } | |
286 | ||
e9f68b5c JCPV |
287 | void __iomem *at91_rstc_base; |
288 | ||
289 | void __init at91_ioremap_rstc(u32 base_addr) | |
290 | { | |
291 | at91_rstc_base = ioremap(base_addr, 16); | |
292 | if (!at91_rstc_base) | |
293 | panic("Impossible to ioremap at91_rstc_base\n"); | |
294 | } | |
295 | ||
21d08b9d JCPV |
296 | void __init at91_initialize(unsigned long main_clock) |
297 | { | |
cfa5a1fe JCPV |
298 | at91_boot_soc.ioremap_registers(); |
299 | ||
46539374 JCPV |
300 | /* Init clock subsystem */ |
301 | at91_clock_init(main_clock); | |
302 | ||
51ddec76 JCPV |
303 | /* Register the processor-specific clocks */ |
304 | at91_boot_soc.register_clocks(); | |
305 | ||
46539374 | 306 | at91_boot_soc.init(); |
21d08b9d | 307 | } |