diff options
| -rw-r--r-- | arch/arm/include/asm/arch-omap3/mem.h | 46 |
1 files changed, 30 insertions, 16 deletions
diff --git a/arch/arm/include/asm/arch-omap3/mem.h b/arch/arm/include/asm/arch-omap3/mem.h index abf4e82..12ff3b0 100644 --- a/arch/arm/include/asm/arch-omap3/mem.h +++ b/arch/arm/include/asm/arch-omap3/mem.h @@ -39,6 +39,12 @@ enum { #define EARLY_INIT 1 +/* + * For a full explanation of these registers and values please see + * the Technical Reference Manual (TRM) for any of the processors in + * this family. + */ + /* Slower full frequency range default timings for x32 operation*/ #define SDRC_SHARING 0x00000100 #define SDRC_MR_0_SDR 0x00000031 @@ -86,6 +92,27 @@ enum { ACTIM_CTRLB_TXP(b) | \ ACTIM_CTRLB_TXSR(d) +/* + * Values used in the MCFG register. Only values we use today + * are defined and the rest can be found in the TRM. Unless otherwise + * noted all fields are one bit. + */ +#define V_MCFG_RAMTYPE_DDR (0x1) +#define V_MCFG_DEEPPD_EN (0x1 << 3) +#define V_MCFG_B32NOT16_32 (0x1 << 4) +#define V_MCFG_BANKALLOCATION_RBC (0x2 << 6) /* 6:7 */ +#define V_MCFG_RAMSIZE(a) ((((a)/(1024*1024))/2) << 8) /* 8:17 */ +#define V_MCFG_ADDRMUXLEGACY_FLEX (0x1 << 19) +#define V_MCFG_CASWIDTH_10B (0x5 << 20) /* 20:22 */ +#define V_MCFG_RASWIDTH(a) ((a) << 24) /* 24:26 */ + +/* Macro to construct MCFG */ +#define MCFG(a, b) \ + V_MCFG_RASWIDTH(b) | V_MCFG_CASWIDTH_10B | \ + V_MCFG_ADDRMUXLEGACY_FLEX | V_MCFG_RAMSIZE(a) | \ + V_MCFG_BANKALLOCATION_RBC | \ + V_MCFG_B32NOT16_32 | V_MCFG_DEEPPD_EN | V_MCFG_RAMTYPE_DDR + /* Infineon part of 3430SDP (165MHz optimized) 6.06ns */ #define INFINEON_TDAL_165 6 /* Twr/Tck + Trp/tck */ /* 15/6 + 18/6 = 5.5 -> 6 */ @@ -138,21 +165,8 @@ enum { ACTIM_CTRLB(MICRON_TWTR_165, MICRON_TCKE_165, \ MICRON_TXP_165, MICRON_XSR_165) -#define MICRON_RAMTYPE 0x1 -#define MICRON_DDRTYPE 0x0 -#define MICRON_DEEPPD 0x1 -#define MICRON_B32NOT16 0x1 -#define MICRON_BANKALLOCATION 0x2 -#define MICRON_RAMSIZE ((PHYS_SDRAM_1_SIZE/(1024*1024))/2) -#define MICRON_ADDRMUXLEGACY 0x1 -#define MICRON_CASWIDTH 0x5 -#define MICRON_RASWIDTH 0x2 -#define MICRON_LOCKSTATUS 0x0 -#define MICRON_V_MCFG ((MICRON_LOCKSTATUS << 30) | (MICRON_RASWIDTH << 24) | \ - (MICRON_CASWIDTH << 20) | (MICRON_ADDRMUXLEGACY << 19) | \ - (MICRON_RAMSIZE << 8) | (MICRON_BANKALLOCATION << 6) | \ - (MICRON_B32NOT16 << 4) | (MICRON_DEEPPD << 3) | \ - (MICRON_DDRTYPE << 2) | (MICRON_RAMTYPE)) +#define MICRON_RASWIDTH 0x2 +#define MICRON_V_MCFG(size) MCFG((size), MICRON_RASWIDTH) #define MICRON_ARCV 2030 #define MICRON_ARE 0x1 @@ -199,7 +213,7 @@ enum { #ifdef CONFIG_OMAP3_MICRON_DDR #define V_ACTIMA_165 MICRON_V_ACTIMA_165 #define V_ACTIMB_165 MICRON_V_ACTIMB_165 -#define V_MCFG MICRON_V_MCFG +#define V_MCFG MICRON_V_MCFG(PHYS_SDRAM_1_SIZE) #define V_RFR_CTRL MICRON_V_RFR_CTRL #define V_MR MICRON_V_MR #endif |