diff options
Diffstat (limited to 'arch/arm/mach-ux500')
| -rw-r--r-- | arch/arm/mach-ux500/Makefile | 3 | ||||
| -rw-r--r-- | arch/arm/mach-ux500/cpu-db5500.c | 12 | ||||
| -rw-r--r-- | arch/arm/mach-ux500/cpu-db8500.c | 91 | ||||
| -rw-r--r-- | arch/arm/mach-ux500/cpu.c | 4 | ||||
| -rw-r--r-- | arch/arm/mach-ux500/id.c | 107 | ||||
| -rw-r--r-- | arch/arm/mach-ux500/include/mach/hardware.h | 50 | ||||
| -rw-r--r-- | arch/arm/mach-ux500/include/mach/id.h | 80 | ||||
| -rw-r--r-- | arch/arm/mach-ux500/include/mach/setup.h | 1 |
8 files changed, 212 insertions, 136 deletions
diff --git a/arch/arm/mach-ux500/Makefile b/arch/arm/mach-ux500/Makefile index fc2180d7308..53ebb429e97 100644 --- a/arch/arm/mach-ux500/Makefile +++ b/arch/arm/mach-ux500/Makefile @@ -2,7 +2,8 @@ # Makefile for the linux kernel, U8500 machine. # -obj-y := clock.o cpu.o devices.o devices-common.o +obj-y := clock.o cpu.o devices.o devices-common.o \ + id.o obj-$(CONFIG_UX500_SOC_DB5500) += cpu-db5500.o dma-db5500.o obj-$(CONFIG_UX500_SOC_DB8500) += cpu-db8500.o devices-db8500.o prcmu.o obj-$(CONFIG_MACH_U8500) += board-mop500.o board-mop500-sdi.o \ diff --git a/arch/arm/mach-ux500/cpu-db5500.c b/arch/arm/mach-ux500/cpu-db5500.c index 7b0ab8336f3..af04e0891a7 100644 --- a/arch/arm/mach-ux500/cpu-db5500.c +++ b/arch/arm/mach-ux500/cpu-db5500.c @@ -21,9 +21,12 @@ #include "devices-db5500.h" -static struct map_desc u5500_io_desc[] __initdata = { +static struct map_desc u5500_uart_io_desc[] __initdata = { __IO_DEV_DESC(U5500_UART0_BASE, SZ_4K), __IO_DEV_DESC(U5500_UART2_BASE, SZ_4K), +}; + +static struct map_desc u5500_io_desc[] __initdata = { __IO_DEV_DESC(U5500_GIC_CPU_BASE, SZ_4K), __IO_DEV_DESC(U5500_GIC_DIST_BASE, SZ_4K), __IO_DEV_DESC(U5500_L2CC_BASE, SZ_4K), @@ -153,6 +156,13 @@ static void __init db5500_add_gpios(void) void __init u5500_map_io(void) { + /* + * Map the UARTs early so that the DEBUG_LL stuff continues to work. + */ + iotable_init(u5500_uart_io_desc, ARRAY_SIZE(u5500_uart_io_desc)); + + ux500_map_io(); + iotable_init(u5500_io_desc, ARRAY_SIZE(u5500_io_desc)); } diff --git a/arch/arm/mach-ux500/cpu-db8500.c b/arch/arm/mach-ux500/cpu-db8500.c index 1b2b81c0f27..1748fbc5853 100644 --- a/arch/arm/mach-ux500/cpu-db8500.c +++ b/arch/arm/mach-ux500/cpu-db8500.c @@ -29,9 +29,12 @@ static struct platform_device *platform_devs[] __initdata = { }; /* minimum static i/o mapping required to boot U8500 platforms */ -static struct map_desc u8500_io_desc[] __initdata = { +static struct map_desc u8500_uart_io_desc[] __initdata = { __IO_DEV_DESC(U8500_UART0_BASE, SZ_4K), __IO_DEV_DESC(U8500_UART2_BASE, SZ_4K), +}; + +static struct map_desc u8500_io_desc[] __initdata = { __IO_DEV_DESC(U8500_GIC_CPU_BASE, SZ_4K), __IO_DEV_DESC(U8500_GIC_DIST_BASE, SZ_4K), __IO_DEV_DESC(U8500_L2CC_BASE, SZ_4K), @@ -51,7 +54,6 @@ static struct map_desc u8500_io_desc[] __initdata = { __IO_DEV_DESC(U8500_GPIO1_BASE, SZ_4K), __IO_DEV_DESC(U8500_GPIO2_BASE, SZ_4K), __IO_DEV_DESC(U8500_GPIO3_BASE, SZ_4K), - __MEM_DEV_DESC(U8500_BOOT_ROM_BASE, SZ_1M), }; static struct map_desc u8500_ed_io_desc[] __initdata = { @@ -68,71 +70,15 @@ static struct map_desc u8500_v2_io_desc[] __initdata = { __IO_DEV_DESC(U8500_PRCMU_TCDM_BASE, SZ_4K), }; -/* - * Functions to differentiate between later ASICs - * We look into the end of the ROM to locate the hardcoded ASIC ID. - * This is only needed to differentiate between minor revisions and - * process variants of an ASIC, the major revisions are encoded in - * the cpuid. - */ -#define U8500_ASIC_ID_LOC_ED_V1 (U8500_BOOT_ROM_BASE + 0x1FFF4) -#define U8500_ASIC_ID_LOC_V2 (U8500_BOOT_ROM_BASE + 0x1DBF4) -#define U8500_ASIC_REV_ED 0x01 -#define U8500_ASIC_REV_V10 0xA0 -#define U8500_ASIC_REV_V11 0xA1 -#define U8500_ASIC_REV_V20 0xB0 - -/** - * struct db8500_asic_id - fields of the ASIC ID - * @process: the manufacturing process, 0x40 is 40 nm - * 0x00 is "standard" - * @partnumber: hithereto 0x8500 for DB8500 - * @revision: version code in the series - * This field definion is not formally defined but makes - * sense. - */ -struct db8500_asic_id { - u8 process; - u16 partnumber; - u8 revision; -}; - -/* This isn't going to change at runtime */ -static struct db8500_asic_id db8500_id; - -static void __init get_db8500_asic_id(void) -{ - u32 asicid; - - if (cpu_is_u8500v1() || cpu_is_u8500ed()) - asicid = readl(__io_address(U8500_ASIC_ID_LOC_ED_V1)); - else if (cpu_is_u8500v2()) - asicid = readl(__io_address(U8500_ASIC_ID_LOC_V2)); - else - BUG(); - - db8500_id.process = (asicid >> 24); - db8500_id.partnumber = (asicid >> 16) & 0xFFFFU; - db8500_id.revision = asicid & 0xFFU; -} - -bool cpu_is_u8500v10(void) -{ - return (db8500_id.revision == U8500_ASIC_REV_V10); -} - -bool cpu_is_u8500v11(void) +void __init u8500_map_io(void) { - return (db8500_id.revision == U8500_ASIC_REV_V11); -} + /* + * Map the UARTs early so that the DEBUG_LL stuff continues to work. + */ + iotable_init(u8500_uart_io_desc, ARRAY_SIZE(u8500_uart_io_desc)); -bool cpu_is_u8500v20(void) -{ - return (db8500_id.revision == U8500_ASIC_REV_V20); -} + ux500_map_io(); -void __init u8500_map_io(void) -{ iotable_init(u8500_io_desc, ARRAY_SIZE(u8500_io_desc)); if (cpu_is_u8500ed()) @@ -141,9 +87,6 @@ void __init u8500_map_io(void) iotable_init(u8500_v1_io_desc, ARRAY_SIZE(u8500_v1_io_desc)); else if (cpu_is_u8500v2()) iotable_init(u8500_v2_io_desc, ARRAY_SIZE(u8500_v2_io_desc)); - - /* Read out the ASIC ID as early as we can */ - get_db8500_asic_id(); } static resource_size_t __initdata db8500_gpio_base[] = { @@ -173,20 +116,6 @@ static void __init db8500_add_gpios(void) */ void __init u8500_init_devices(void) { - /* Display some ASIC boilerplate */ - pr_info("DB8500: process: %02x, revision ID: 0x%02x\n", - db8500_id.process, db8500_id.revision); - if (cpu_is_u8500ed()) - pr_info("DB8500: Early Drop (ED)\n"); - else if (cpu_is_u8500v10()) - pr_info("DB8500: version 1.0\n"); - else if (cpu_is_u8500v11()) - pr_info("DB8500: version 1.1\n"); - else if (cpu_is_u8500v20()) - pr_info("DB8500: version 2.0\n"); - else - pr_warning("ASIC: UNKNOWN SILICON VERSION!\n"); - if (cpu_is_u8500ed()) dma40_u8500ed_fixup(); diff --git a/arch/arm/mach-ux500/cpu.c b/arch/arm/mach-ux500/cpu.c index 35a3af13fb3..5a43107c623 100644 --- a/arch/arm/mach-ux500/cpu.c +++ b/arch/arm/mach-ux500/cpu.c @@ -27,10 +27,6 @@ static void __iomem *l2x0_base; #endif -void __init ux500_map_io(void) -{ -} - void __init ux500_init_irq(void) { void __iomem *dist_base; diff --git a/arch/arm/mach-ux500/id.c b/arch/arm/mach-ux500/id.c new file mode 100644 index 00000000000..d35122ebc67 --- /dev/null +++ b/arch/arm/mach-ux500/id.c @@ -0,0 +1,107 @@ +/* + * Copyright (C) ST-Ericsson SA 2010 + * + * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson + * License terms: GNU General Public License (GPL) version 2 + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/io.h> + +#include <asm/cputype.h> +#include <asm/tlbflush.h> +#include <asm/cacheflush.h> +#include <asm/mach/map.h> + +#include <mach/hardware.h> +#include <mach/setup.h> + +struct dbx500_asic_id dbx500_id; + +static unsigned int ux500_read_asicid(phys_addr_t addr) +{ + phys_addr_t base = addr & ~0xfff; + struct map_desc desc = { + .virtual = IO_ADDRESS(base), + .pfn = __phys_to_pfn(base), + .length = SZ_16K, + .type = MT_DEVICE, + }; + + iotable_init(&desc, 1); + + /* As in devicemaps_init() */ + local_flush_tlb_all(); + flush_cache_all(); + + return readl(__io_address(addr)); +} + +static void ux500_print_soc_info(unsigned int asicid) +{ + unsigned int rev = dbx500_revision(); + + pr_info("DB%4x ", dbx500_partnumber()); + + if (rev == 0x01) + pr_cont("Early Drop"); + else if (rev >= 0xA0) + pr_cont("v%d.%d" , (rev >> 4) - 0xA + 1, rev & 0xf); + else + pr_cont("Unknown"); + + pr_cont(" [%#010x]\n", asicid); +} + +static unsigned int partnumber(unsigned int asicid) +{ + return (asicid >> 8) & 0xffff; +} + +/* + * SOC MIDR ASICID ADDRESS ASICID VALUE + * DB8500ed 0x410fc090 0x9001FFF4 0x00850001 + * DB8500v1 0x411fc091 0x9001FFF4 0x008500A0 + * DB8500v1.1 0x411fc091 0x9001FFF4 0x008500A1 + * DB8500v2 0x412fc091 0x9001DBF4 0x008500B0 + * DB5500v1 0x412fc091 0x9001FFF4 0x005500A0 + */ + +void __init ux500_map_io(void) +{ + unsigned int cpuid = read_cpuid_id(); + unsigned int asicid = 0; + phys_addr_t addr = 0; + + switch (cpuid) { + case 0x410fc090: /* DB8500ed */ + case 0x411fc091: /* DB8500v1 */ + addr = 0x9001FFF4; + break; + + case 0x412fc091: /* DB8500v2 / DB5500v1 */ + asicid = ux500_read_asicid(0x9001DBF4); + if (partnumber(asicid) == 0x8500) + /* DB8500v2 */ + break; + + /* DB5500v1 */ + addr = 0x9001FFF4; + break; + } + + if (addr) + asicid = ux500_read_asicid(addr); + + if (!asicid) { + pr_err("Unable to identify SoC\n"); + ux500_unknown_soc(); + } + + dbx500_id.process = asicid >> 24; + dbx500_id.partnumber = partnumber(asicid); + dbx500_id.revision = asicid & 0xff; + + ux500_print_soc_info(asicid); +} diff --git a/arch/arm/mach-ux500/include/mach/hardware.h b/arch/arm/mach-ux500/include/mach/hardware.h index bced4a8e16e..bf63f2631ba 100644 --- a/arch/arm/mach-ux500/include/mach/hardware.h +++ b/arch/arm/mach-ux500/include/mach/hardware.h @@ -34,57 +34,9 @@ #ifndef __ASSEMBLY__ -#include <asm/cputype.h> - -static inline bool cpu_is_u8500(void) -{ -#ifdef CONFIG_UX500_SOC_DB8500 - return 1; -#else - return 0; -#endif -} - -#define CPUID_DB8500ED 0x410fc090 -#define CPUID_DB8500V1 0x411fc091 -#define CPUID_DB8500V2 0x412fc091 - -static inline bool cpu_is_u8500ed(void) -{ - return cpu_is_u8500() && (read_cpuid_id() == CPUID_DB8500ED); -} - -static inline bool cpu_is_u8500v1(void) -{ - return cpu_is_u8500() && (read_cpuid_id() == CPUID_DB8500V1); -} - -static inline bool cpu_is_u8500v2(void) -{ - return cpu_is_u8500() && (read_cpuid_id() == CPUID_DB8500V2); -} - -#ifdef CONFIG_UX500_SOC_DB8500 -bool cpu_is_u8500v10(void); -bool cpu_is_u8500v11(void); -bool cpu_is_u8500v20(void); -#else -static inline bool cpu_is_u8500v10(void) { return false; } -static inline bool cpu_is_u8500v11(void) { return false; } -static inline bool cpu_is_u8500v20(void) { return false; } -#endif - -static inline bool cpu_is_u5500(void) -{ -#ifdef CONFIG_UX500_SOC_DB5500 - return 1; -#else - return 0; -#endif -} +#include <mach/id.h> #define ARRAY_AND_SIZE(x) (x), ARRAY_SIZE(x) -#define ux500_unknown_soc() BUG() #endif diff --git a/arch/arm/mach-ux500/include/mach/id.h b/arch/arm/mach-ux500/include/mach/id.h new file mode 100644 index 00000000000..f1288d10b6a --- /dev/null +++ b/arch/arm/mach-ux500/include/mach/id.h @@ -0,0 +1,80 @@ +/* + * Copyright (C) ST-Ericsson SA 2010 + * + * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson + * License terms: GNU General Public License (GPL) version 2 + */ + +#ifndef __MACH_UX500_ID +#define __MACH_UX500_ID + +/** + * struct dbx500_asic_id - fields of the ASIC ID + * @process: the manufacturing process, 0x40 is 40 nm 0x00 is "standard" + * @partnumber: hithereto 0x8500 for DB8500 + * @revision: version code in the series + */ +struct dbx500_asic_id { + u16 partnumber; + u8 revision; + u8 process; +}; + +extern struct dbx500_asic_id dbx500_id; + +static inline unsigned int __attribute_const__ dbx500_partnumber(void) +{ + return dbx500_id.partnumber; +} + +static inline unsigned int __attribute_const__ dbx500_revision(void) +{ + return dbx500_id.revision; +} + +/* + * SOCs + */ + +static inline bool __attribute_const__ cpu_is_u8500(void) +{ + return dbx500_partnumber() == 0x8500; +} + +static inline bool __attribute_const__ cpu_is_u5500(void) +{ + return dbx500_partnumber() == 0x5500; +} + +/* + * 8500 revisions + */ + +static inline bool __attribute_const__ cpu_is_u8500ed(void) +{ + return cpu_is_u8500() && dbx500_revision() == 0x00; +} + +static inline bool __attribute_const__ cpu_is_u8500v1(void) +{ + return cpu_is_u8500() && (dbx500_revision() & 0xf0) == 0xA0; +} + +static inline bool __attribute_const__ cpu_is_u8500v10(void) +{ + return cpu_is_u8500() && dbx500_revision() == 0xA0; +} + +static inline bool __attribute_const__ cpu_is_u8500v11(void) +{ + return cpu_is_u8500() && dbx500_revision() == 0xA1; +} + +static inline bool __attribute_const__ cpu_is_u8500v2(void) +{ + return cpu_is_u8500() && ((dbx500_revision() & 0xf0) == 0xB0); +} + +#define ux500_unknown_soc() BUG() + +#endif diff --git a/arch/arm/mach-ux500/include/mach/setup.h b/arch/arm/mach-ux500/include/mach/setup.h index 5d8423294d4..a7d363fdb4c 100644 --- a/arch/arm/mach-ux500/include/mach/setup.h +++ b/arch/arm/mach-ux500/include/mach/setup.h @@ -14,6 +14,7 @@ #include <asm/mach/time.h> #include <linux/init.h> +void __init ux500_map_io(void); extern void __init u5500_map_io(void); extern void __init u8500_map_io(void); |