From: Tirumala Marri tmarri@apm.com
This patch adds 32bit DDR2 static as well as dynamic setting of different DRAM parameters like CAS and read/write delays.
Signed-off-by: Tirumala R Marri tmarri@apm.com --- arch/powerpc/include/asm/ppc4xx-sdram.h | 25 +++++++++++++++++++------ 1 files changed, 19 insertions(+), 6 deletions(-)
diff --git a/arch/powerpc/include/asm/ppc4xx-sdram.h b/arch/powerpc/include/asm/ppc4xx-sdram.h index 4ec1ef8..a6cdace 100644 --- a/arch/powerpc/include/asm/ppc4xx-sdram.h +++ b/arch/powerpc/include/asm/ppc4xx-sdram.h @@ -292,7 +292,7 @@ */ #if defined(CONFIG_440SPE) || \ defined(CONFIG_460EX) || defined(CONFIG_460GT) || \ - defined(CONFIG_460SX) + defined(CONFIG_460SX) || defined(CONFIG_APM82XXX) #define SDRAM_RXBAS_SDBA_MASK 0xFFE00000 /* Base address */ #define SDRAM_RXBAS_SDBA_ENCODE(n) ((u32)(((phys_size_t)(n) >> 2) & 0xFFE00000)) #define SDRAM_RXBAS_SDBA_DECODE(n) ((((phys_size_t)(n)) & 0xFFE00000) << 2) @@ -322,6 +322,7 @@ * Revisit this file to check if all these 405EX defines are correct and * can be used in the common 44x_spd_ddr2 code as well. sr, 2008-06-02 */ +#define SDRAM_MBXCF_BASE_ENCODE(n) (((n) & 0xFFC00000) >> 3) #define SDRAM_RXBAS_SDSZ_MASK PPC_REG_VAL(19, 0xF) #define SDRAM_RXBAS_SDSZ_4MB PPC_REG_VAL(19, 0x0) #define SDRAM_RXBAS_SDSZ_8MB PPC_REG_VAL(19, 0x1) @@ -346,6 +347,18 @@ #define SDRAM_RXBAS_SDSZ_2048 SDRAM_RXBAS_SDSZ_2048MB #define SDRAM_RXBAS_SDSZ_4096 SDRAM_RXBAS_SDSZ_4096MB #define SDRAM_RXBAS_SDSZ_8192 SDRAM_RXBAS_SDSZ_8192MB +#define SDRAM_RXBAS_SDAM_MODE0 PPC_REG_VAL(23, 0x0) +#define SDRAM_RXBAS_SDAM_MODE1 PPC_REG_VAL(23, 0x1) +#define SDRAM_RXBAS_SDAM_MODE2 PPC_REG_VAL(23, 0x2) +#define SDRAM_RXBAS_SDAM_MODE3 PPC_REG_VAL(23, 0x3) +#define SDRAM_RXBAS_SDAM_MODE4 PPC_REG_VAL(23, 0x4) +#define SDRAM_RXBAS_SDAM_MODE5 PPC_REG_VAL(23, 0x5) +#define SDRAM_RXBAS_SDAM_MODE6 PPC_REG_VAL(23, 0x6) +#define SDRAM_RXBAS_SDAM_MODE7 PPC_REG_VAL(23, 0x7) +#define SDRAM_RXBAS_SDAM_MODE8 PPC_REG_VAL(23, 0x8) +#define SDRAM_RXBAS_SDAM_MODE9 PPC_REG_VAL(23, 0x9) +#define SDRAM_RXBAS_SDBE_DISABLE PPC_REG_VAL(31, 0x0) +#define SDRAM_RXBAS_SDBE_ENABLE PPC_REG_VAL(31, 0x1) #endif /* CONFIG_405EX */
/* The mode definitions are the same for all PPC4xx variants */ @@ -365,7 +378,7 @@ /* * Memory controller registers */ -#ifdef CONFIG_405EX +#if defined(CONFIG_405EX) || defined(CONFIG_APM82XXX) #define SDRAM_BESR 0x00 /* PLB bus error status (read/clear) */ #define SDRAM_BESRT 0x01 /* PLB bus error status (test/set) */ #define SDRAM_BEARL 0x02 /* PLB bus error address low */ @@ -375,9 +388,9 @@ #define SDRAM_PLBOPT 0x08 /* PLB slave options */ #define SDRAM_PUABA 0x09 /* PLB upper address base */ #define SDRAM_MCSTAT 0x1F /* memory controller status */ -#else /* CONFIG_405EX */ +#else /* CONFIG_405EX || CONFIG_APM82XXX*/ #define SDRAM_MCSTAT 0x14 /* memory controller status */ -#endif /* CONFIG_405EX */ +#endif /* CONFIG_405EX || CONFIG_APM82XXX*/ #define SDRAM_MCOPT1 0x20 /* memory controller options 1 */ #define SDRAM_MCOPT2 0x21 /* memory controller options 2 */ #define SDRAM_MODT0 0x22 /* on die termination for bank 0 */ @@ -423,12 +436,12 @@ #define SDRAM_MEMODE 0x89 /* memory extended mode */ #define SDRAM_ECCES 0x98 /* ECC error status */ #define SDRAM_CID 0xA4 /* core ID */ -#ifndef CONFIG_405EX +#if !defined(CONFIG_405EX) && !defined(CONFIG_APM82XXX) #define SDRAM_RID 0xA8 /* revision ID */ #endif #define SDRAM_FCSR 0xB0 /* feedback calibration status */ #define SDRAM_RTSR 0xB1 /* run time status tracking */ -#ifdef CONFIG_405EX +#if defined(CONFIG_405EX) || defined(CONFIG_APM82XXX) #define SDRAM_RID 0xF8 /* revision ID */ #endif