diff options
Diffstat (limited to 'arch/powerpc/cpu/mpc8xxx/ddr/options.c')
| -rw-r--r-- | arch/powerpc/cpu/mpc8xxx/ddr/options.c | 308 |
1 files changed, 302 insertions, 6 deletions
diff --git a/arch/powerpc/cpu/mpc8xxx/ddr/options.c b/arch/powerpc/cpu/mpc8xxx/ddr/options.c index 55dff4394..6ccc3b0c7 100644 --- a/arch/powerpc/cpu/mpc8xxx/ddr/options.c +++ b/arch/powerpc/cpu/mpc8xxx/ddr/options.c @@ -26,6 +26,243 @@ extern void fsl_ddr_board_options(memctl_options_t *popts, dimm_params_t *pdimm, unsigned int ctrl_num); +typedef struct { + unsigned int odt_rd_cfg; + unsigned int odt_wr_cfg; + unsigned int odt_rtt_norm; + unsigned int odt_rtt_wr; +} dynamic_odt_t; + +static const dynamic_odt_t single_Q[4] = { + { /* cs0 */ + FSL_DDR_ODT_NEVER, + FSL_DDR_ODT_CS_AND_OTHER_DIMM, + DDR3_RTT_20_OHM, + DDR3_RTT_120_OHM + }, + { /* cs1 */ + FSL_DDR_ODT_NEVER, + FSL_DDR_ODT_NEVER, /* tied high */ + DDR3_RTT_OFF, + DDR3_RTT_120_OHM + }, + { /* cs2 */ + FSL_DDR_ODT_NEVER, + FSL_DDR_ODT_CS_AND_OTHER_DIMM, + DDR3_RTT_20_OHM, + DDR3_RTT_120_OHM + }, + { /* cs3 */ + FSL_DDR_ODT_NEVER, + FSL_DDR_ODT_NEVER, /* tied high */ + DDR3_RTT_OFF, + DDR3_RTT_120_OHM + } +}; + +static const dynamic_odt_t single_D[4] = { + { /* cs0 */ + FSL_DDR_ODT_NEVER, + FSL_DDR_ODT_ALL, + DDR3_RTT_40_OHM, + DDR3_RTT_OFF + }, + { /* cs1 */ + FSL_DDR_ODT_NEVER, + FSL_DDR_ODT_NEVER, + DDR3_RTT_OFF, + DDR3_RTT_OFF + }, + {0, 0, 0, 0}, + {0, 0, 0, 0} +}; + +static const dynamic_odt_t single_S[4] = { + { /* cs0 */ + FSL_DDR_ODT_NEVER, + FSL_DDR_ODT_ALL, + DDR3_RTT_40_OHM, + DDR3_RTT_OFF + }, + {0, 0, 0, 0}, + {0, 0, 0, 0}, + {0, 0, 0, 0}, +}; + +static const dynamic_odt_t dual_DD[4] = { + { /* cs0 */ + FSL_DDR_ODT_NEVER, + FSL_DDR_ODT_SAME_DIMM, + DDR3_RTT_120_OHM, + DDR3_RTT_OFF + }, + { /* cs1 */ + FSL_DDR_ODT_OTHER_DIMM, + FSL_DDR_ODT_OTHER_DIMM, + DDR3_RTT_30_OHM, + DDR3_RTT_OFF + }, + { /* cs2 */ + FSL_DDR_ODT_NEVER, + FSL_DDR_ODT_SAME_DIMM, + DDR3_RTT_120_OHM, + DDR3_RTT_OFF + }, + { /* cs3 */ + FSL_DDR_ODT_OTHER_DIMM, + FSL_DDR_ODT_OTHER_DIMM, + DDR3_RTT_30_OHM, + DDR3_RTT_OFF + } +}; + +static const dynamic_odt_t dual_DS[4] = { + { /* cs0 */ + FSL_DDR_ODT_NEVER, + FSL_DDR_ODT_SAME_DIMM, + DDR3_RTT_120_OHM, + DDR3_RTT_OFF + }, + { /* cs1 */ + FSL_DDR_ODT_OTHER_DIMM, + FSL_DDR_ODT_OTHER_DIMM, + DDR3_RTT_30_OHM, + DDR3_RTT_OFF + }, + { /* cs2 */ + FSL_DDR_ODT_OTHER_DIMM, + FSL_DDR_ODT_ALL, + DDR3_RTT_20_OHM, + DDR3_RTT_120_OHM + }, + {0, 0, 0, 0} +}; +static const dynamic_odt_t dual_SD[4] = { + { /* cs0 */ + FSL_DDR_ODT_OTHER_DIMM, + FSL_DDR_ODT_ALL, + DDR3_RTT_20_OHM, + DDR3_RTT_120_OHM + }, + {0, 0, 0, 0}, + { /* cs2 */ + FSL_DDR_ODT_NEVER, + FSL_DDR_ODT_SAME_DIMM, + DDR3_RTT_120_OHM, + DDR3_RTT_OFF + }, + { /* cs3 */ + FSL_DDR_ODT_OTHER_DIMM, + FSL_DDR_ODT_OTHER_DIMM, + DDR3_RTT_20_OHM, + DDR3_RTT_OFF + } +}; + +static const dynamic_odt_t dual_SS[4] = { + { /* cs0 */ + FSL_DDR_ODT_OTHER_DIMM, + FSL_DDR_ODT_ALL, + DDR3_RTT_30_OHM, + DDR3_RTT_120_OHM + }, + {0, 0, 0, 0}, + { /* cs2 */ + FSL_DDR_ODT_OTHER_DIMM, + FSL_DDR_ODT_ALL, + DDR3_RTT_30_OHM, + DDR3_RTT_120_OHM + }, + {0, 0, 0, 0} +}; + +static const dynamic_odt_t dual_D0[4] = { + { /* cs0 */ + FSL_DDR_ODT_NEVER, + FSL_DDR_ODT_SAME_DIMM, + DDR3_RTT_40_OHM, + DDR3_RTT_OFF + }, + { /* cs1 */ + FSL_DDR_ODT_NEVER, + FSL_DDR_ODT_NEVER, + DDR3_RTT_OFF, + DDR3_RTT_OFF + }, + {0, 0, 0, 0}, + {0, 0, 0, 0} +}; + +static const dynamic_odt_t dual_0D[4] = { + {0, 0, 0, 0}, + {0, 0, 0, 0}, + { /* cs2 */ + FSL_DDR_ODT_NEVER, + FSL_DDR_ODT_SAME_DIMM, + DDR3_RTT_40_OHM, + DDR3_RTT_OFF + }, + { /* cs3 */ + FSL_DDR_ODT_NEVER, + FSL_DDR_ODT_NEVER, + DDR3_RTT_OFF, + DDR3_RTT_OFF + } +}; + +static const dynamic_odt_t dual_S0[4] = { + { /* cs0 */ + FSL_DDR_ODT_NEVER, + FSL_DDR_ODT_CS, + DDR3_RTT_40_OHM, + DDR3_RTT_OFF + }, + {0, 0, 0, 0}, + {0, 0, 0, 0}, + {0, 0, 0, 0} + +}; + +static const dynamic_odt_t dual_0S[4] = { + {0, 0, 0, 0}, + {0, 0, 0, 0}, + { /* cs2 */ + FSL_DDR_ODT_NEVER, + FSL_DDR_ODT_CS, + DDR3_RTT_40_OHM, + DDR3_RTT_OFF + }, + {0, 0, 0, 0} + +}; + +static const dynamic_odt_t odt_unknown[4] = { + { /* cs0 */ + FSL_DDR_ODT_NEVER, + FSL_DDR_ODT_CS, + DDR3_RTT_120_OHM, + DDR3_RTT_OFF + }, + { /* cs1 */ + FSL_DDR_ODT_NEVER, + FSL_DDR_ODT_CS, + DDR3_RTT_120_OHM, + DDR3_RTT_OFF + }, + { /* cs2 */ + FSL_DDR_ODT_NEVER, + FSL_DDR_ODT_CS, + DDR3_RTT_120_OHM, + DDR3_RTT_OFF + }, + { /* cs3 */ + FSL_DDR_ODT_NEVER, + FSL_DDR_ODT_CS, + DDR3_RTT_120_OHM, + DDR3_RTT_OFF + } +}; + unsigned int populate_memctl_options(int all_DIMMs_registered, memctl_options_t *popts, dimm_params_t *pdimm, @@ -34,6 +271,7 @@ unsigned int populate_memctl_options(int all_DIMMs_registered, unsigned int i; char buffer[HWCONFIG_BUFFER_SIZE]; char *buf = NULL; + const dynamic_odt_t *pdodt = odt_unknown; /* * Extract hwconfig from environment since we have not properly setup @@ -43,15 +281,70 @@ unsigned int populate_memctl_options(int all_DIMMs_registered, buf = buffer; /* Chip select options. */ + if (CONFIG_DIMM_SLOTS_PER_CTLR == 1) { + switch (pdimm[0].n_ranks) { + case 1: + pdodt = single_S; + break; + case 2: + pdodt = single_D; + break; + case 4: + pdodt = single_Q; + break; + } + } else if (CONFIG_DIMM_SLOTS_PER_CTLR == 2) { + switch (pdimm[0].n_ranks) { + case 2: + switch (pdimm[1].n_ranks) { + case 2: + pdodt = dual_DD; + break; + case 1: + pdodt = dual_DS; + break; + case 0: + pdodt = dual_D0; + break; + } + break; + case 1: + switch (pdimm[1].n_ranks) { + case 2: + pdodt = dual_SD; + break; + case 1: + pdodt = dual_SS; + break; + case 0: + pdodt = dual_S0; + break; + } + break; + case 0: + switch (pdimm[1].n_ranks) { + case 2: + pdodt = dual_0D; + break; + case 1: + pdodt = dual_0S; + break; + } + break; + } + } /* Pick chip-select local options. */ for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { - /* If not DDR2, odt_rd_cfg and odt_wr_cfg need to be 0. */ - - /* only for single CS? */ - popts->cs_local_opts[i].odt_rd_cfg = 0; - - popts->cs_local_opts[i].odt_wr_cfg = 1; +#if defined(CONFIG_FSL_DDR3) + popts->cs_local_opts[i].odt_rd_cfg = pdodt[i].odt_rd_cfg; + popts->cs_local_opts[i].odt_wr_cfg = pdodt[i].odt_wr_cfg; + popts->cs_local_opts[i].odt_rtt_norm = pdodt[i].odt_rtt_norm; + popts->cs_local_opts[i].odt_rtt_wr = pdodt[i].odt_rtt_wr; +#else + popts->cs_local_opts[i].odt_rd_cfg = FSL_DDR_ODT_NEVER; + popts->cs_local_opts[i].odt_wr_cfg = FSL_DDR_ODT_CS; +#endif popts->cs_local_opts[i].auto_precharge = 0; } @@ -179,6 +472,9 @@ unsigned int populate_memctl_options(int all_DIMMs_registered, popts->twoT_en = 0; popts->threeT_en = 0; + /* for RDIMM, address parity enable */ + popts->ap_en = 1; + /* * BSTTOPRE precharge interval * |