diff options
| author | Sanjeev Premi <premi@ti.com> | 2009-11-22 10:10:53 -0800 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2009-11-22 10:24:32 -0800 |
| commit | 8384ce071365244332ea05c81112bfffcf48be87 (patch) | |
| tree | 5a6f076c6cef8d526b4429e17a64fd73dd63132c /arch/arm/plat-omap/include/plat | |
| parent | 45f780a06153544ab84fd1da3a8b28c07f61da1d (diff) | |
| download | kernel_samsung_smdk4412-8384ce071365244332ea05c81112bfffcf48be87.zip kernel_samsung_smdk4412-8384ce071365244332ea05c81112bfffcf48be87.tar.gz kernel_samsung_smdk4412-8384ce071365244332ea05c81112bfffcf48be87.tar.bz2 | |
omap3: Runtime detection of Si features
The OMAP35x family has multiple variants differing
in the HW features. This patch detects these features
at runtime and prints information during the boot.
Since most of the code seemed repetitive, macros
have been used for readability.
Signed-off-by: Sanjeev Premi <premi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/plat-omap/include/plat')
| -rw-r--r-- | arch/arm/plat-omap/include/plat/control.h | 34 | ||||
| -rw-r--r-- | arch/arm/plat-omap/include/plat/cpu.h | 25 |
2 files changed, 59 insertions, 0 deletions
diff --git a/arch/arm/plat-omap/include/plat/control.h b/arch/arm/plat-omap/include/plat/control.h index 8237cb9..79985e4 100644 --- a/arch/arm/plat-omap/include/plat/control.h +++ b/arch/arm/plat-omap/include/plat/control.h @@ -254,6 +254,40 @@ #define OMAP343X_SCRATCHPAD (OMAP343X_CTRL_BASE + 0x910) #define OMAP343X_SCRATCHPAD_ROM_OFFSET 0x19C +/* + * CONTROL OMAP STATUS register to identify OMAP3 features + */ +#define OMAP3_CONTROL_OMAP_STATUS 0x044c + +#define OMAP3_SGX_SHIFT 13 +#define OMAP3_SGX_MASK (3 << OMAP3_SGX_SHIFT) +#define FEAT_SGX_FULL 0 +#define FEAT_SGX_HALF 1 +#define FEAT_SGX_NONE 2 + +#define OMAP3_IVA_SHIFT 12 +#define OMAP3_IVA_MASK (1 << OMAP3_SGX_SHIFT) +#define FEAT_IVA 0 +#define FEAT_IVA_NONE 1 + +#define OMAP3_L2CACHE_SHIFT 10 +#define OMAP3_L2CACHE_MASK (3 << OMAP3_L2CACHE_SHIFT) +#define FEAT_L2CACHE_NONE 0 +#define FEAT_L2CACHE_64KB 1 +#define FEAT_L2CACHE_128KB 2 +#define FEAT_L2CACHE_256KB 3 + +#define OMAP3_ISP_SHIFT 5 +#define OMAP3_ISP_MASK (1<< OMAP3_ISP_SHIFT) +#define FEAT_ISP 0 +#define FEAT_ISP_NONE 1 + +#define OMAP3_NEON_SHIFT 4 +#define OMAP3_NEON_MASK (1<< OMAP3_NEON_SHIFT) +#define FEAT_NEON 0 +#define FEAT_NEON_NONE 1 + + #ifndef __ASSEMBLY__ #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) || \ defined(CONFIG_ARCH_OMAP4) diff --git a/arch/arm/plat-omap/include/plat/cpu.h b/arch/arm/plat-omap/include/plat/cpu.h index f129efb..431fec4 100644 --- a/arch/arm/plat-omap/include/plat/cpu.h +++ b/arch/arm/plat-omap/include/plat/cpu.h @@ -30,6 +30,8 @@ #ifndef __ASM_ARCH_OMAP_CPU_H #define __ASM_ARCH_OMAP_CPU_H +#include <linux/bitops.h> + /* * Omap device type i.e. EMU/HS/TST/GP/BAD */ @@ -423,4 +425,27 @@ IS_OMAP_TYPE(3430, 0x3430) int omap_chip_is(struct omap_chip_id oci); void omap2_check_revision(void); +/* + * Runtime detection of OMAP3 features + */ +extern u32 omap3_features; + +#define OMAP3_HAS_L2CACHE BIT(0) +#define OMAP3_HAS_IVA BIT(1) +#define OMAP3_HAS_SGX BIT(2) +#define OMAP3_HAS_NEON BIT(3) +#define OMAP3_HAS_ISP BIT(4) + +#define OMAP3_HAS_FEATURE(feat,flag) \ +static inline unsigned int omap3_has_ ##feat(void) \ +{ \ + return (omap3_features & OMAP3_HAS_ ##flag); \ +} \ + +OMAP3_HAS_FEATURE(l2cache, L2CACHE) +OMAP3_HAS_FEATURE(sgx, SGX) +OMAP3_HAS_FEATURE(iva, IVA) +OMAP3_HAS_FEATURE(neon, NEON) +OMAP3_HAS_FEATURE(isp, ISP) + #endif |