| /* |
| * Copyright (C) 2007 Atmel Corporation. |
| * Copyright (C) 2011 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> |
| * |
| * Under GPLv2 |
| */ |
| |
| #define pr_fmt(fmt) "AT91: " fmt |
| |
| #include <linux/module.h> |
| #include <linux/io.h> |
| #include <linux/mm.h> |
| #include <linux/pm.h> |
| #include <linux/of_address.h> |
| #include <linux/pinctrl/machine.h> |
| #include <linux/clk/at91_pmc.h> |
| |
| #include <asm/system_misc.h> |
| #include <asm/mach/map.h> |
| |
| #include <mach/hardware.h> |
| #include <mach/cpu.h> |
| #include <mach/at91_dbgu.h> |
| |
| #include "generic.h" |
| #include "pm.h" |
| |
| struct at91_socinfo at91_soc_initdata; |
| EXPORT_SYMBOL(at91_soc_initdata); |
| |
| static struct map_desc at91_io_desc __initdata __maybe_unused = { |
| .virtual = (unsigned long)AT91_VA_BASE_SYS, |
| .pfn = __phys_to_pfn(AT91_BASE_SYS), |
| .length = SZ_16K, |
| .type = MT_DEVICE, |
| }; |
| |
| static struct map_desc at91_alt_io_desc __initdata __maybe_unused = { |
| .virtual = (unsigned long)AT91_ALT_VA_BASE_SYS, |
| .pfn = __phys_to_pfn(AT91_ALT_BASE_SYS), |
| .length = 24 * SZ_1K, |
| .type = MT_DEVICE, |
| }; |
| |
| static void __init soc_detect(u32 dbgu_base) |
| { |
| u32 cidr, socid; |
| |
| cidr = __raw_readl(AT91_IO_P2V(dbgu_base) + AT91_DBGU_CIDR); |
| socid = cidr & ~AT91_CIDR_VERSION; |
| |
| switch (socid) { |
| case ARCH_ID_AT91RM9200: |
| at91_soc_initdata.type = AT91_SOC_RM9200; |
| if (at91_soc_initdata.subtype == AT91_SOC_SUBTYPE_UNKNOWN) |
| at91_soc_initdata.subtype = AT91_SOC_RM9200_BGA; |
| break; |
| |
| case ARCH_ID_AT91SAM9260: |
| at91_soc_initdata.type = AT91_SOC_SAM9260; |
| at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_NONE; |
| break; |
| |
| case ARCH_ID_AT91SAM9261: |
| at91_soc_initdata.type = AT91_SOC_SAM9261; |
| at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_NONE; |
| break; |
| |
| case ARCH_ID_AT91SAM9263: |
| at91_soc_initdata.type = AT91_SOC_SAM9263; |
| at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_NONE; |
| break; |
| |
| case ARCH_ID_AT91SAM9G20: |
| at91_soc_initdata.type = AT91_SOC_SAM9G20; |
| at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_NONE; |
| break; |
| |
| case ARCH_ID_AT91SAM9G45: |
| at91_soc_initdata.type = AT91_SOC_SAM9G45; |
| if (cidr == ARCH_ID_AT91SAM9G45ES) |
| at91_soc_initdata.subtype = AT91_SOC_SAM9G45ES; |
| break; |
| |
| case ARCH_ID_AT91SAM9RL64: |
| at91_soc_initdata.type = AT91_SOC_SAM9RL; |
| at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_NONE; |
| break; |
| |
| case ARCH_ID_AT91SAM9X5: |
| at91_soc_initdata.type = AT91_SOC_SAM9X5; |
| break; |
| |
| case ARCH_ID_AT91SAM9N12: |
| at91_soc_initdata.type = AT91_SOC_SAM9N12; |
| break; |
| |
| case ARCH_ID_SAMA5: |
| at91_soc_initdata.exid = __raw_readl(AT91_IO_P2V(dbgu_base) + AT91_DBGU_EXID); |
| if (at91_soc_initdata.exid & ARCH_EXID_SAMA5D3) { |
| at91_soc_initdata.type = AT91_SOC_SAMA5D3; |
| } |
| break; |
| } |
| |
| /* at91sam9g10 */ |
| if ((socid & ~AT91_CIDR_EXT) == ARCH_ID_AT91SAM9G10) { |
| at91_soc_initdata.type = AT91_SOC_SAM9G10; |
| at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_NONE; |
| } |
| /* at91sam9xe */ |
| else if ((cidr & AT91_CIDR_ARCH) == ARCH_FAMILY_AT91SAM9XE) { |
| at91_soc_initdata.type = AT91_SOC_SAM9260; |
| at91_soc_initdata.subtype = AT91_SOC_SAM9XE; |
| } |
| |
| if (!at91_soc_is_detected()) |
| return; |
| |
| at91_soc_initdata.cidr = cidr; |
| |
| /* sub version of soc */ |
| if (!at91_soc_initdata.exid) |
| at91_soc_initdata.exid = __raw_readl(AT91_IO_P2V(dbgu_base) + AT91_DBGU_EXID); |
| |
| if (at91_soc_initdata.type == AT91_SOC_SAM9G45) { |
| switch (at91_soc_initdata.exid) { |
| case ARCH_EXID_AT91SAM9M10: |
| at91_soc_initdata.subtype = AT91_SOC_SAM9M10; |
| break; |
| case ARCH_EXID_AT91SAM9G46: |
| at91_soc_initdata.subtype = AT91_SOC_SAM9G46; |
| break; |
| case ARCH_EXID_AT91SAM9M11: |
| at91_soc_initdata.subtype = AT91_SOC_SAM9M11; |
| break; |
| } |
| } |
| |
| if (at91_soc_initdata.type == AT91_SOC_SAM9X5) { |
| switch (at91_soc_initdata.exid) { |
| case ARCH_EXID_AT91SAM9G15: |
| at91_soc_initdata.subtype = AT91_SOC_SAM9G15; |
| break; |
| case ARCH_EXID_AT91SAM9G35: |
| at91_soc_initdata.subtype = AT91_SOC_SAM9G35; |
| break; |
| case ARCH_EXID_AT91SAM9X35: |
| at91_soc_initdata.subtype = AT91_SOC_SAM9X35; |
| break; |
| case ARCH_EXID_AT91SAM9G25: |
| at91_soc_initdata.subtype = AT91_SOC_SAM9G25; |
| break; |
| case ARCH_EXID_AT91SAM9X25: |
| at91_soc_initdata.subtype = AT91_SOC_SAM9X25; |
| break; |
| } |
| } |
| |
| if (at91_soc_initdata.type == AT91_SOC_SAMA5D3) { |
| switch (at91_soc_initdata.exid) { |
| case ARCH_EXID_SAMA5D31: |
| at91_soc_initdata.subtype = AT91_SOC_SAMA5D31; |
| break; |
| case ARCH_EXID_SAMA5D33: |
| at91_soc_initdata.subtype = AT91_SOC_SAMA5D33; |
| break; |
| case ARCH_EXID_SAMA5D34: |
| at91_soc_initdata.subtype = AT91_SOC_SAMA5D34; |
| break; |
| case ARCH_EXID_SAMA5D35: |
| at91_soc_initdata.subtype = AT91_SOC_SAMA5D35; |
| break; |
| case ARCH_EXID_SAMA5D36: |
| at91_soc_initdata.subtype = AT91_SOC_SAMA5D36; |
| break; |
| } |
| } |
| } |
| |
| static void __init alt_soc_detect(u32 dbgu_base) |
| { |
| u32 cidr, socid; |
| |
| /* SoC ID */ |
| cidr = __raw_readl(AT91_ALT_IO_P2V(dbgu_base) + AT91_DBGU_CIDR); |
| socid = cidr & ~AT91_CIDR_VERSION; |
| |
| switch (socid) { |
| case ARCH_ID_SAMA5: |
| at91_soc_initdata.exid = __raw_readl(AT91_ALT_IO_P2V(dbgu_base) + AT91_DBGU_EXID); |
| if (at91_soc_initdata.exid & ARCH_EXID_SAMA5D3) { |
| at91_soc_initdata.type = AT91_SOC_SAMA5D3; |
| } else if (at91_soc_initdata.exid & ARCH_EXID_SAMA5D4) { |
| at91_soc_initdata.type = AT91_SOC_SAMA5D4; |
| } |
| break; |
| } |
| |
| if (!at91_soc_is_detected()) |
| return; |
| |
| at91_soc_initdata.cidr = cidr; |
| |
| /* sub version of soc */ |
| if (!at91_soc_initdata.exid) |
| at91_soc_initdata.exid = __raw_readl(AT91_ALT_IO_P2V(dbgu_base) + AT91_DBGU_EXID); |
| |
| if (at91_soc_initdata.type == AT91_SOC_SAMA5D4) { |
| switch (at91_soc_initdata.exid) { |
| case ARCH_EXID_SAMA5D41: |
| at91_soc_initdata.subtype = AT91_SOC_SAMA5D41; |
| break; |
| case ARCH_EXID_SAMA5D42: |
| at91_soc_initdata.subtype = AT91_SOC_SAMA5D42; |
| break; |
| case ARCH_EXID_SAMA5D43: |
| at91_soc_initdata.subtype = AT91_SOC_SAMA5D43; |
| break; |
| case ARCH_EXID_SAMA5D44: |
| at91_soc_initdata.subtype = AT91_SOC_SAMA5D44; |
| break; |
| } |
| } |
| } |
| |
| static const char *soc_name[] = { |
| [AT91_SOC_RM9200] = "at91rm9200", |
| [AT91_SOC_SAM9260] = "at91sam9260", |
| [AT91_SOC_SAM9261] = "at91sam9261", |
| [AT91_SOC_SAM9263] = "at91sam9263", |
| [AT91_SOC_SAM9G10] = "at91sam9g10", |
| [AT91_SOC_SAM9G20] = "at91sam9g20", |
| [AT91_SOC_SAM9G45] = "at91sam9g45", |
| [AT91_SOC_SAM9RL] = "at91sam9rl", |
| [AT91_SOC_SAM9X5] = "at91sam9x5", |
| [AT91_SOC_SAM9N12] = "at91sam9n12", |
| [AT91_SOC_SAMA5D3] = "sama5d3", |
| [AT91_SOC_SAMA5D4] = "sama5d4", |
| [AT91_SOC_UNKNOWN] = "Unknown", |
| }; |
| |
| const char *at91_get_soc_type(struct at91_socinfo *c) |
| { |
| return soc_name[c->type]; |
| } |
| EXPORT_SYMBOL(at91_get_soc_type); |
| |
| static const char *soc_subtype_name[] = { |
| [AT91_SOC_RM9200_BGA] = "at91rm9200 BGA", |
| [AT91_SOC_RM9200_PQFP] = "at91rm9200 PQFP", |
| [AT91_SOC_SAM9XE] = "at91sam9xe", |
| [AT91_SOC_SAM9G45ES] = "at91sam9g45es", |
| [AT91_SOC_SAM9M10] = "at91sam9m10", |
| [AT91_SOC_SAM9G46] = "at91sam9g46", |
| [AT91_SOC_SAM9M11] = "at91sam9m11", |
| [AT91_SOC_SAM9G15] = "at91sam9g15", |
| [AT91_SOC_SAM9G35] = "at91sam9g35", |
| [AT91_SOC_SAM9X35] = "at91sam9x35", |
| [AT91_SOC_SAM9G25] = "at91sam9g25", |
| [AT91_SOC_SAM9X25] = "at91sam9x25", |
| [AT91_SOC_SAMA5D31] = "sama5d31", |
| [AT91_SOC_SAMA5D33] = "sama5d33", |
| [AT91_SOC_SAMA5D34] = "sama5d34", |
| [AT91_SOC_SAMA5D35] = "sama5d35", |
| [AT91_SOC_SAMA5D36] = "sama5d36", |
| [AT91_SOC_SAMA5D41] = "sama5d41", |
| [AT91_SOC_SAMA5D42] = "sama5d42", |
| [AT91_SOC_SAMA5D43] = "sama5d43", |
| [AT91_SOC_SAMA5D44] = "sama5d44", |
| [AT91_SOC_SUBTYPE_NONE] = "None", |
| [AT91_SOC_SUBTYPE_UNKNOWN] = "Unknown", |
| }; |
| |
| const char *at91_get_soc_subtype(struct at91_socinfo *c) |
| { |
| return soc_subtype_name[c->subtype]; |
| } |
| EXPORT_SYMBOL(at91_get_soc_subtype); |
| |
| void __init at91_map_io(void) |
| { |
| /* Map peripherals */ |
| iotable_init(&at91_io_desc, 1); |
| |
| at91_soc_initdata.type = AT91_SOC_UNKNOWN; |
| at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_UNKNOWN; |
| |
| soc_detect(AT91_BASE_DBGU0); |
| if (!at91_soc_is_detected()) |
| soc_detect(AT91_BASE_DBGU1); |
| |
| if (!at91_soc_is_detected()) |
| panic(pr_fmt("Impossible to detect the SOC type")); |
| |
| pr_info("Detected soc type: %s\n", |
| at91_get_soc_type(&at91_soc_initdata)); |
| if (at91_soc_initdata.subtype != AT91_SOC_SUBTYPE_NONE) |
| pr_info("Detected soc subtype: %s\n", |
| at91_get_soc_subtype(&at91_soc_initdata)); |
| } |
| |
| void __init at91_alt_map_io(void) |
| { |
| /* Map peripherals */ |
| iotable_init(&at91_alt_io_desc, 1); |
| |
| at91_soc_initdata.type = AT91_SOC_UNKNOWN; |
| at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_UNKNOWN; |
| |
| alt_soc_detect(AT91_BASE_DBGU2); |
| if (!at91_soc_is_detected()) |
| panic("AT91: Impossible to detect the SOC type"); |
| |
| pr_info("AT91: Detected soc type: %s\n", |
| at91_get_soc_type(&at91_soc_initdata)); |
| if (at91_soc_initdata.subtype != AT91_SOC_SUBTYPE_NONE) |
| pr_info("AT91: Detected soc subtype: %s\n", |
| at91_get_soc_subtype(&at91_soc_initdata)); |
| } |
| |
| void __iomem *at91_matrix_base; |
| EXPORT_SYMBOL_GPL(at91_matrix_base); |
| |
| void __init at91_ioremap_matrix(u32 base_addr) |
| { |
| at91_matrix_base = ioremap(base_addr, 512); |
| if (!at91_matrix_base) |
| panic(pr_fmt("Impossible to ioremap at91_matrix_base\n")); |
| } |
