diff options
| -rw-r--r-- | arch/powerpc/cpu/mpc85xx/ddr-gen3.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/cpu/mpc8xxx/ddr/ctrl_regs.c | 10 | ||||
| -rw-r--r-- | arch/powerpc/cpu/mpc8xxx/ddr/options.c | 7 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/fsl_ddr_sdram.h | 2 | ||||
| -rw-r--r-- | doc/README.fsl-ddr | 15 |
5 files changed, 34 insertions, 2 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/ddr-gen3.c b/arch/powerpc/cpu/mpc85xx/ddr-gen3.c index 0691ca455..e46dcb704 100644 --- a/arch/powerpc/cpu/mpc85xx/ddr-gen3.c +++ b/arch/powerpc/cpu/mpc85xx/ddr-gen3.c @@ -33,6 +33,8 @@ void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs, return; } + out_be32(&ddr->eor, regs->ddr_eor); + for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { if (i == 0) { out_be32(&ddr->cs0_bnds, regs->cs[i].bnds); diff --git a/arch/powerpc/cpu/mpc8xxx/ddr/ctrl_regs.c b/arch/powerpc/cpu/mpc8xxx/ddr/ctrl_regs.c index 6e73b1d31..ff0ddd189 100644 --- a/arch/powerpc/cpu/mpc8xxx/ddr/ctrl_regs.c +++ b/arch/powerpc/cpu/mpc8xxx/ddr/ctrl_regs.c @@ -1161,6 +1161,14 @@ static void set_ddr_sdram_rcw_2(fsl_ddr_cfg_regs_t *ddr) ); } +static void set_ddr_eor(fsl_ddr_cfg_regs_t *ddr, const memctl_options_t *popts) +{ + if (popts->addr_hash) { + ddr->ddr_eor = 0x40000000; /* address hash enable */ + puts("Addess hashing enabled.\n"); + } +} + unsigned int check_fsl_memctl_config_regs(const fsl_ddr_cfg_regs_t *ddr) { @@ -1392,6 +1400,8 @@ compute_fsl_memctl_config_regs(const memctl_options_t *popts, set_csn_config_2(i, ddr); } + set_ddr_eor(ddr, popts); + #if !defined(CONFIG_FSL_DDR1) set_timing_cfg_0(ddr); #endif diff --git a/arch/powerpc/cpu/mpc8xxx/ddr/options.c b/arch/powerpc/cpu/mpc8xxx/ddr/options.c index 1d5f3e2cd..e4805d36b 100644 --- a/arch/powerpc/cpu/mpc8xxx/ddr/options.c +++ b/arch/powerpc/cpu/mpc8xxx/ddr/options.c @@ -341,6 +341,13 @@ unsigned int populate_memctl_options(int all_DIMMs_registered, } } + if (hwconfig_sub("fsl_ddr", "addr_hash")) { + if (hwconfig_subarg_cmp("fsl_ddr", "addr_hash", "null")) + popts->addr_hash = 0; + else if (hwconfig_subarg_cmp("fsl_ddr", "addr_hash", "true")) + popts->addr_hash = 1; + } + if (pdimm[0].n_ranks == 4) popts->quad_rank_present = 1; diff --git a/arch/powerpc/include/asm/fsl_ddr_sdram.h b/arch/powerpc/include/asm/fsl_ddr_sdram.h index 431327e94..d576eb85e 100644 --- a/arch/powerpc/include/asm/fsl_ddr_sdram.h +++ b/arch/powerpc/include/asm/fsl_ddr_sdram.h @@ -119,6 +119,7 @@ typedef struct fsl_ddr_cfg_regs_s { unsigned int ddr_sr_cntr; unsigned int ddr_sdram_rcw_1; unsigned int ddr_sdram_rcw_2; + unsigned int ddr_eor; } fsl_ddr_cfg_regs_t; typedef struct memctl_options_partial_s { @@ -156,6 +157,7 @@ typedef struct memctl_options_s { unsigned int memctl_interleaving; unsigned int memctl_interleaving_mode; unsigned int ba_intlv_ctl; + unsigned int addr_hash; /* Operational mode parameters */ unsigned int ECC_mode; /* Use ECC? */ diff --git a/doc/README.fsl-ddr b/doc/README.fsl-ddr index 8c37bbead..e108a0d50 100644 --- a/doc/README.fsl-ddr +++ b/doc/README.fsl-ddr @@ -71,5 +71,16 @@ The ways to configure the ddr interleaving mode # bank(chip-select) interleaving (cs0+cs1+cs2+cs3) (4x1) setenv hwconfig "fsl_ddr:bank_intlv=cs0_cs1_cs2_cs3" - The above memory controller interleaving and bank interleaving can be mixed. The syntax is - setenv hwconfig "fsl_ddr:ctlr_intlv=cacheline,bank_intlv=cs0_cs1" +Memory controller address hashing +================================== +If the DDR controller supports address hashing, it can be enabled by hwconfig. + +Syntax is: +hwconfig=fsl_ddr:addr_hash=true + +Combination of hwconfig +======================= +Hwconfig can be combined with multiple parameters, for example, on a supported +platform + +hwconfig=fsl_ddr:addr_hash=true,ctlr_intlv=cacheline,bank_intlv=cs0_cs1_cs2_cs3 |