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author | Tony Lindgren <tony@atomide.com> | 2008-10-06 15:49:16 +0300 |
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committer | Tony Lindgren <tony@atomide.com> | 2008-10-06 15:49:16 +0300 |
commit | 0e564848693b06b037ec05e68c9e4b266250789e (patch) | |
tree | e73546b541cd03ec6a36b2f82177fca1b171574c /arch | |
parent | 1835f1d720786138c43147448f4527dd380c1e33 (diff) | |
download | kernel_samsung_smdk4412-0e564848693b06b037ec05e68c9e4b266250789e.zip kernel_samsung_smdk4412-0e564848693b06b037ec05e68c9e4b266250789e.tar.gz kernel_samsung_smdk4412-0e564848693b06b037ec05e68c9e4b266250789e.tar.bz2 |
ARM: OMAP2: Use omap_globals for CPU detection for multi-omap
This allows to get rid of the ifdefs and will allow simpler
CPU detection in the future.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch')
-rw-r--r-- | arch/arm/mach-omap2/id.c | 39 | ||||
-rw-r--r-- | arch/arm/plat-omap/common.c | 4 | ||||
-rw-r--r-- | arch/arm/plat-omap/include/mach/common.h | 2 | ||||
-rw-r--r-- | arch/arm/plat-omap/include/mach/cpu.h | 5 |
4 files changed, 34 insertions, 16 deletions
diff --git a/arch/arm/mach-omap2/id.c b/arch/arm/mach-omap2/id.c index e53ebe7..0670c8d 100644 --- a/arch/arm/mach-omap2/id.c +++ b/arch/arm/mach-omap2/id.c @@ -17,24 +17,15 @@ #include <asm/io.h> +#include <mach/common.h> #include <mach/control.h> #include <mach/cpu.h> -#if defined(CONFIG_ARCH_OMAP2420) -#define TAP_BASE IO_ADDRESS(0x48014000) -#elif defined(CONFIG_ARCH_OMAP2430) -#define TAP_BASE IO_ADDRESS(0x4900A000) -#elif defined(CONFIG_ARCH_OMAP34XX) -#define TAP_BASE IO_ADDRESS(0x4830A000) -#endif +static u32 class; +static void __iomem *tap_base; +static u16 tap_prod_id; #define OMAP_TAP_IDCODE 0x0204 -#if defined(CONFIG_ARCH_OMAP34XX) -#define OMAP_TAP_PROD_ID 0x0210 -#else -#define OMAP_TAP_PROD_ID 0x0208 -#endif - #define OMAP_TAP_DIE_ID_0 0x0218 #define OMAP_TAP_DIE_ID_1 0x021C #define OMAP_TAP_DIE_ID_2 0x0220 @@ -93,18 +84,24 @@ static u32 __init read_tap_reg(int reg) * it means its Cortex r0p0 which is 3430 ES1 */ if ((((cpuid >> 4) & 0xFFF) == 0xC08) && ((cpuid & 0xF) == 0x0)) { + + if (reg == tap_prod_id) { + regval = 0x000F00F0; + goto out; + } + switch (reg) { case OMAP_TAP_IDCODE : regval = 0x0B7AE02F; break; /* Making DevType as 0xF in ES1 to differ from ES2 */ - case OMAP_TAP_PROD_ID : regval = 0x000F00F0; break; case OMAP_TAP_DIE_ID_0: regval = 0x01000000; break; case OMAP_TAP_DIE_ID_1: regval = 0x1012d687; break; case OMAP_TAP_DIE_ID_2: regval = 0x00000000; break; case OMAP_TAP_DIE_ID_3: regval = 0x2d2c0000; break; } } else - regval = __raw_readl(TAP_BASE + reg); + regval = __raw_readl(tap_base + reg); +out: return regval; } @@ -203,7 +200,7 @@ void __init omap2_check_revision(void) u8 rev; idcode = read_tap_reg(OMAP_TAP_IDCODE); - prod_id = read_tap_reg(OMAP_TAP_PROD_ID); + prod_id = read_tap_reg(tap_prod_id); hawkeye = (idcode >> 12) & 0xffff; rev = (idcode >> 28) & 0x0f; dev_type = (prod_id >> 16) & 0x0f; @@ -268,3 +265,13 @@ void __init omap2_check_revision(void) } +void __init omap2_set_globals_tap(struct omap_globals *omap2_globals) +{ + class = omap2_globals->class; + tap_base = omap2_globals->tap; + + if (class == 0x3430) + tap_prod_id = 0x0210; + else + tap_prod_id = 0x0208; +} diff --git a/arch/arm/plat-omap/common.c b/arch/arm/plat-omap/common.c index 20e8db5..e3143fe 100644 --- a/arch/arm/plat-omap/common.c +++ b/arch/arm/plat-omap/common.c @@ -248,6 +248,7 @@ static struct omap_globals *omap2_globals; static void __init __omap2_set_globals(void) { + omap2_set_globals_tap(omap2_globals); omap2_set_globals_memory(omap2_globals); omap2_set_globals_control(omap2_globals); omap2_set_globals_prcm(omap2_globals); @@ -258,6 +259,7 @@ static void __init __omap2_set_globals(void) #if defined(CONFIG_ARCH_OMAP2420) static struct omap_globals omap242x_globals = { + .class = OMAP242X_CLASS, .tap = OMAP2_IO_ADDRESS(0x48014000), .sdrc = OMAP2_IO_ADDRESS(OMAP2420_SDRC_BASE), .sms = OMAP2_IO_ADDRESS(OMAP2420_SMS_BASE), @@ -276,6 +278,7 @@ void __init omap2_set_globals_242x(void) #if defined(CONFIG_ARCH_OMAP2430) static struct omap_globals omap243x_globals = { + .class = OMAP243X_CLASS, .tap = OMAP2_IO_ADDRESS(0x4900a000), .sdrc = OMAP2_IO_ADDRESS(OMAP243X_SDRC_BASE), .sms = OMAP2_IO_ADDRESS(OMAP243X_SMS_BASE), @@ -294,6 +297,7 @@ void __init omap2_set_globals_243x(void) #if defined(CONFIG_ARCH_OMAP3430) static struct omap_globals omap343x_globals = { + .class = OMAP343X_CLASS, .tap = OMAP2_IO_ADDRESS(0x4830A000), .sdrc = OMAP2_IO_ADDRESS(OMAP343X_SDRC_BASE), .sms = OMAP2_IO_ADDRESS(OMAP343X_SMS_BASE), diff --git a/arch/arm/plat-omap/include/mach/common.h b/arch/arm/plat-omap/include/mach/common.h index 515c628..ef70e2b 100644 --- a/arch/arm/plat-omap/include/mach/common.h +++ b/arch/arm/plat-omap/include/mach/common.h @@ -50,6 +50,7 @@ static inline int omap_register_i2c_bus(int bus_id, u32 clkrate, /* IO bases for various OMAP processors */ struct omap_globals { + u32 class; /* OMAP class to detect */ void __iomem *tap; /* Control module ID code */ void __iomem *sdrc; /* SDRAM Controller */ void __iomem *sms; /* SDRAM Memory Scheduler */ @@ -63,6 +64,7 @@ void omap2_set_globals_243x(void); void omap2_set_globals_343x(void); /* These get called from omap2_set_globals_xxxx(), do not call these */ +void omap2_set_globals_tap(struct omap_globals *); void omap2_set_globals_memory(struct omap_globals *); void omap2_set_globals_control(struct omap_globals *); void omap2_set_globals_prcm(struct omap_globals *); diff --git a/arch/arm/plat-omap/include/mach/cpu.h b/arch/arm/plat-omap/include/mach/cpu.h index 05aee0e..e046418 100644 --- a/arch/arm/plat-omap/include/mach/cpu.h +++ b/arch/arm/plat-omap/include/mach/cpu.h @@ -346,9 +346,14 @@ IS_OMAP_TYPE(3430, 0x3430) get_sil_revision(system_rev) /* Various silicon macros defined here */ +#define OMAP242X_CLASS 0x24200000 #define OMAP2420_REV_ES1_0 0x24200000 #define OMAP2420_REV_ES2_0 0x24201000 + +#define OMAP243X_CLASS 0x24300000 #define OMAP2430_REV_ES1_0 0x24300000 + +#define OMAP343X_CLASS 0x34300000 #define OMAP3430_REV_ES1_0 0x34300000 #define OMAP3430_REV_ES2_0 0x34301000 #define OMAP3430_REV_ES2_1 0x34302000 |