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author | H. Nikolaus Schaller <hns@goldelico.com> | 2011-02-24 13:21:40 +0100 |
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committer | H. Nikolaus Schaller <hns@goldelico.com> | 2011-02-24 13:21:40 +0100 |
commit | 67fa659acb97323da480a4a545560d4d27c5796a (patch) | |
tree | 648ab5e4cbcdf17bcfe0e79346e264c4f0187662 /arch/powerpc/cpu/mpc8xxx/ddr | |
parent | 872ca46bf7ec07388fc06e687875204663f6080e (diff) | |
parent | c7977858dcf1f656cbe91ea0dc3cb9139c6a8cc8 (diff) | |
download | bootable_bootloader_goldelico_gta04-67fa659acb97323da480a4a545560d4d27c5796a.zip bootable_bootloader_goldelico_gta04-67fa659acb97323da480a4a545560d4d27c5796a.tar.gz bootable_bootloader_goldelico_gta04-67fa659acb97323da480a4a545560d4d27c5796a.tar.bz2 |
git pull denx master
Diffstat (limited to 'arch/powerpc/cpu/mpc8xxx/ddr')
-rw-r--r-- | arch/powerpc/cpu/mpc8xxx/ddr/ctrl_regs.c | 265 | ||||
-rw-r--r-- | arch/powerpc/cpu/mpc8xxx/ddr/ddr.h | 10 | ||||
-rw-r--r-- | arch/powerpc/cpu/mpc8xxx/ddr/lc_common_dimm_params.c | 20 | ||||
-rw-r--r-- | arch/powerpc/cpu/mpc8xxx/ddr/main.c | 36 | ||||
-rw-r--r-- | arch/powerpc/cpu/mpc8xxx/ddr/options.c | 411 |
5 files changed, 644 insertions, 98 deletions
diff --git a/arch/powerpc/cpu/mpc8xxx/ddr/ctrl_regs.c b/arch/powerpc/cpu/mpc8xxx/ddr/ctrl_regs.c index 3fec100..936c195 100644 --- a/arch/powerpc/cpu/mpc8xxx/ddr/ctrl_regs.c +++ b/arch/powerpc/cpu/mpc8xxx/ddr/ctrl_regs.c @@ -1,5 +1,5 @@ /* - * Copyright 2008-2010 Freescale Semiconductor, Inc. + * Copyright 2008-2011 Freescale Semiconductor, Inc. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the Free @@ -18,7 +18,28 @@ #include "ddr.h" -extern unsigned int picos_to_mclk(unsigned int picos); +#ifdef CONFIG_MPC85xx + #define _DDR_ADDR CONFIG_SYS_MPC85xx_DDR_ADDR +#elif defined(CONFIG_MPC86xx) + #define _DDR_ADDR CONFIG_SYS_MPC86xx_DDR_ADDR +#else + #error "Undefined _DDR_ADDR" +#endif + +u32 fsl_ddr_get_version(void) +{ + ccsr_ddr_t *ddr; + u32 ver_major_minor_errata; + + ddr = (void *)_DDR_ADDR; + ver_major_minor_errata = (in_be32(&ddr->ip_rev1) & 0xFFFF) << 8; + ver_major_minor_errata |= (in_be32(&ddr->ip_rev2) & 0xFF00) >> 8; + + return ver_major_minor_errata; +} + +unsigned int picos_to_mclk(unsigned int picos); + /* * Determine Rtt value. * @@ -187,7 +208,8 @@ static void set_csn_config_2(int i, fsl_ddr_cfg_regs_t *ddr) * Avoid writing for DDR I. The new PQ38 DDR controller * dreams up non-zero default values to be backwards compatible. */ -static void set_timing_cfg_0(fsl_ddr_cfg_regs_t *ddr) +static void set_timing_cfg_0(fsl_ddr_cfg_regs_t *ddr, + const memctl_options_t *popts) { unsigned char trwt_mclk = 0; /* Read-to-write turnaround */ unsigned char twrt_mclk = 0; /* Write-to-read turnaround */ @@ -204,7 +226,7 @@ static void set_timing_cfg_0(fsl_ddr_cfg_regs_t *ddr) /* Mode register set cycle time (tMRD). */ unsigned char tmrd_mclk; -#if defined(CONFIG_FSL_DDR3) +#ifdef CONFIG_FSL_DDR3 /* * (tXARD and tXARDS). Empirical? * The DDR3 spec has not tXARD, @@ -214,13 +236,24 @@ static void set_timing_cfg_0(fsl_ddr_cfg_regs_t *ddr) * tAXPD=1, need design to confirm. */ int tXP = max((get_memory_clk_period_ps() * 3), 7500); /* unit=ps */ - act_pd_exit_mclk = picos_to_mclk(tXP); - /* Mode register MR0[A12] is '1' - fast exit */ - pre_pd_exit_mclk = act_pd_exit_mclk; - taxpd_mclk = 1; + unsigned int data_rate = fsl_ddr_get_mem_data_rate(); tmrd_mclk = 4; /* set the turnaround time */ trwt_mclk = 1; + if ((data_rate/1000000 > 1150) || (popts->memctl_interleaving)) + twrt_mclk = 1; + + if (popts->dynamic_power == 0) { /* powerdown is not used */ + act_pd_exit_mclk = 1; + pre_pd_exit_mclk = 1; + taxpd_mclk = 1; + } else { + /* act_pd_exit_mclk = tXARD, see above */ + act_pd_exit_mclk = picos_to_mclk(tXP); + /* Mode register MR0[A12] is '1' - fast exit */ + pre_pd_exit_mclk = act_pd_exit_mclk; + taxpd_mclk = 1; + } #else /* CONFIG_FSL_DDR2 */ /* * (tXARD and tXARDS). Empirical? @@ -450,28 +483,34 @@ static void set_timing_cfg_2(fsl_ddr_cfg_regs_t *ddr, /* DDR SDRAM Register Control Word */ static void set_ddr_sdram_rcw(fsl_ddr_cfg_regs_t *ddr, + const memctl_options_t *popts, const common_timing_params_t *common_dimm) { if (common_dimm->all_DIMMs_registered && !common_dimm->all_DIMMs_unbuffered) { - ddr->ddr_sdram_rcw_1 = - common_dimm->rcw[0] << 28 | \ - common_dimm->rcw[1] << 24 | \ - common_dimm->rcw[2] << 20 | \ - common_dimm->rcw[3] << 16 | \ - common_dimm->rcw[4] << 12 | \ - common_dimm->rcw[5] << 8 | \ - common_dimm->rcw[6] << 4 | \ - common_dimm->rcw[7]; - ddr->ddr_sdram_rcw_2 = - common_dimm->rcw[8] << 28 | \ - common_dimm->rcw[9] << 24 | \ - common_dimm->rcw[10] << 20 | \ - common_dimm->rcw[11] << 16 | \ - common_dimm->rcw[12] << 12 | \ - common_dimm->rcw[13] << 8 | \ - common_dimm->rcw[14] << 4 | \ - common_dimm->rcw[15]; + if (popts->rcw_override) { + ddr->ddr_sdram_rcw_1 = popts->rcw_1; + ddr->ddr_sdram_rcw_2 = popts->rcw_2; + } else { + ddr->ddr_sdram_rcw_1 = + common_dimm->rcw[0] << 28 | \ + common_dimm->rcw[1] << 24 | \ + common_dimm->rcw[2] << 20 | \ + common_dimm->rcw[3] << 16 | \ + common_dimm->rcw[4] << 12 | \ + common_dimm->rcw[5] << 8 | \ + common_dimm->rcw[6] << 4 | \ + common_dimm->rcw[7]; + ddr->ddr_sdram_rcw_2 = + common_dimm->rcw[8] << 28 | \ + common_dimm->rcw[9] << 24 | \ + common_dimm->rcw[10] << 20 | \ + common_dimm->rcw[11] << 16 | \ + common_dimm->rcw[12] << 12 | \ + common_dimm->rcw[13] << 8 | \ + common_dimm->rcw[14] << 4 | \ + common_dimm->rcw[15]; + } debug("FSLDDR: ddr_sdram_rcw_1 = 0x%08x\n", ddr->ddr_sdram_rcw_1); debug("FSLDDR: ddr_sdram_rcw_2 = 0x%08x\n", ddr->ddr_sdram_rcw_2); } @@ -509,8 +548,14 @@ static void set_ddr_sdram_cfg(fsl_ddr_cfg_regs_t *ddr, ecc_en = 0; } - rd_en = (common_dimm->all_DIMMs_registered - && !common_dimm->all_DIMMs_unbuffered); + if (common_dimm->all_DIMMs_registered + && !common_dimm->all_DIMMs_unbuffered) { + rd_en = 1; + twoT_en = 0; + } else { + rd_en = 0; + twoT_en = popts->twoT_en; + } sdram_type = CONFIG_FSL_SDRAM_TYPE; @@ -530,7 +575,6 @@ static void set_ddr_sdram_cfg(fsl_ddr_cfg_regs_t *ddr, } threeT_en = popts->threeT_en; - twoT_en = popts->twoT_en; ba_intlv_ctl = popts->ba_intlv_ctl; hse = popts->half_strength_driver_enable; @@ -558,7 +602,8 @@ static void set_ddr_sdram_cfg(fsl_ddr_cfg_regs_t *ddr, /* DDR SDRAM control configuration 2 (DDR_SDRAM_CFG_2) */ static void set_ddr_sdram_cfg_2(fsl_ddr_cfg_regs_t *ddr, - const memctl_options_t *popts) + const memctl_options_t *popts, + const unsigned int unq_mrs_en) { unsigned int frc_sr = 0; /* Force self refresh */ unsigned int sr_ie = 0; /* Self-refresh interrupt enable */ @@ -598,11 +643,17 @@ static void set_ddr_sdram_cfg_2(fsl_ddr_cfg_regs_t *ddr, obc_cfg = 0; #endif - ap_en = 0; /* Make this configurable? */ + if (popts->registered_dimm_en) { + rcw_en = 1; + ap_en = popts->ap_en; + } else { + rcw_en = 0; + ap_en = 0; + } #if defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER) /* Use the DDR controller to auto initialize memory. */ - d_init = 1; + d_init = popts->ECC_init_using_memctl; ddr->ddr_data_init = CONFIG_MEM_INIT_VALUE; debug("DDR: ddr_data_init = 0x%08x\n", ddr->ddr_data_init); #else @@ -613,7 +664,6 @@ static void set_ddr_sdram_cfg_2(fsl_ddr_cfg_regs_t *ddr, #if defined(CONFIG_FSL_DDR3) md_en = popts->mirrored_dimm; #endif - rcw_en = popts->registered_dimm_en; qd_en = popts->quad_rank_present ? 1 : 0; ddr->ddr_sdram_cfg_2 = (0 | ((frc_sr & 0x1) << 31) @@ -623,6 +673,7 @@ static void set_ddr_sdram_cfg_2(fsl_ddr_cfg_regs_t *ddr, | ((odt_cfg & 0x3) << 21) | ((num_pr & 0xf) << 12) | (qd_en << 9) + | (unq_mrs_en << 8) | ((obc_cfg & 0x1) << 6) | ((ap_en & 0x1) << 5) | ((d_init & 0x1) << 4) @@ -634,12 +685,14 @@ static void set_ddr_sdram_cfg_2(fsl_ddr_cfg_regs_t *ddr, /* DDR SDRAM Mode configuration 2 (DDR_SDRAM_MODE_2) */ static void set_ddr_sdram_mode_2(fsl_ddr_cfg_regs_t *ddr, - const memctl_options_t *popts) + const memctl_options_t *popts, + const unsigned int unq_mrs_en) { unsigned short esdmode2 = 0; /* Extended SDRAM mode 2 */ unsigned short esdmode3 = 0; /* Extended SDRAM mode 3 */ #if defined(CONFIG_FSL_DDR3) + int i; unsigned int rtt_wr = 0; /* Rtt_WR - dynamic ODT off */ unsigned int srt = 0; /* self-refresh temerature, normal range */ unsigned int asr = 0; /* auto self-refresh disable */ @@ -648,7 +701,8 @@ static void set_ddr_sdram_mode_2(fsl_ddr_cfg_regs_t *ddr, if (popts->rtt_override) rtt_wr = popts->rtt_wr_override_value; - + else + rtt_wr = popts->cs_local_opts[0].odt_rtt_wr; esdmode2 = (0 | ((rtt_wr & 0x3) << 9) | ((srt & 0x1) << 7) @@ -661,6 +715,46 @@ static void set_ddr_sdram_mode_2(fsl_ddr_cfg_regs_t *ddr, | ((esdmode3 & 0xFFFF) << 0) ); debug("FSLDDR: ddr_sdram_mode_2 = 0x%08x\n", ddr->ddr_sdram_mode_2); + +#ifdef CONFIG_FSL_DDR3 + if (unq_mrs_en) { /* unique mode registers are supported */ + for (i = 1; i < 4; i++) { + if (popts->rtt_override) + rtt_wr = popts->rtt_wr_override_value; + else + rtt_wr = popts->cs_local_opts[i].odt_rtt_wr; + + esdmode2 &= 0xF9FF; /* clear bit 10, 9 */ + esdmode2 |= (rtt_wr & 0x3) << 9; + switch (i) { + case 1: + ddr->ddr_sdram_mode_4 = (0 + | ((esdmode2 & 0xFFFF) << 16) + | ((esdmode3 & 0xFFFF) << 0) + ); + break; + case 2: + ddr->ddr_sdram_mode_6 = (0 + | ((esdmode2 & 0xFFFF) << 16) + | ((esdmode3 & 0xFFFF) << 0) + ); + break; + case 3: + ddr->ddr_sdram_mode_8 = (0 + | ((esdmode2 & 0xFFFF) << 16) + | ((esdmode3 & 0xFFFF) << 0) + ); + break; + } + } + debug("FSLDDR: ddr_sdram_mode_4 = 0x%08x\n", + ddr->ddr_sdram_mode_4); + debug("FSLDDR: ddr_sdram_mode_6 = 0x%08x\n", + ddr->ddr_sdram_mode_6); + debug("FSLDDR: ddr_sdram_mode_8 = 0x%08x\n", + ddr->ddr_sdram_mode_8); + } +#endif } /* DDR SDRAM Interval Configuration (DDR_SDRAM_INTERVAL) */ @@ -689,7 +783,8 @@ static void set_ddr_sdram_mode(fsl_ddr_cfg_regs_t *ddr, const memctl_options_t *popts, const common_timing_params_t *common_dimm, unsigned int cas_latency, - unsigned int additive_latency) + unsigned int additive_latency, + const unsigned int unq_mrs_en) { unsigned short esdmode; /* Extended SDRAM mode */ unsigned short sdmode; /* SDRAM mode */ @@ -700,7 +795,7 @@ static void set_ddr_sdram_mode(fsl_ddr_cfg_regs_t *ddr, unsigned int rtt; unsigned int wrlvl_en = 0; /* Write level enable: 0=no, 1=yes */ unsigned int al = 0; /* Posted CAS# additive latency (AL) */ - unsigned int dic = 1; /* Output driver impedance, 34ohm */ + unsigned int dic = 0; /* Output driver impedance, 40ohm */ unsigned int dll_en = 0; /* DLL Enable 0=Enable (Normal), 1=Disable (Test/Debug) */ @@ -717,16 +812,21 @@ static void set_ddr_sdram_mode(fsl_ddr_cfg_regs_t *ddr, unsigned int wr_mclk; const unsigned int mclk_ps = get_memory_clk_period_ps(); + int i; - rtt = fsl_ddr_get_rtt(); if (popts->rtt_override) rtt = popts->rtt_override_value; + else + rtt = popts->cs_local_opts[0].odt_rtt_norm; if (additive_latency == (cas_latency - 1)) al = 1; if (additive_latency == (cas_latency - 2)) al = 2; + if (popts->quad_rank_present) + dic = 1; /* output driver impedance 240/7 ohm */ + /* * The esdmode value will also be used for writing * MR1 during write leveling for DDR3, although the @@ -812,6 +912,48 @@ static void set_ddr_sdram_mode(fsl_ddr_cfg_regs_t *ddr, ); debug("FSLDDR: ddr_sdram_mode = 0x%08x\n", ddr->ddr_sdram_mode); + + if (unq_mrs_en) { /* unique mode registers are supported */ + for (i = 1; i < 4; i++) { + if (popts->rtt_override) + rtt = popts->rtt_override_value; + else + rtt = popts->cs_local_opts[i].odt_rtt_norm; + + esdmode &= 0xFDBB; /* clear bit 9,6,2 */ + esdmode |= (0 + | ((rtt & 0x4) << 7) /* rtt field is split */ + | ((rtt & 0x2) << 5) /* rtt field is split */ + | ((rtt & 0x1) << 2) /* rtt field is split */ + ); + switch (i) { + case 1: + ddr->ddr_sdram_mode_3 = (0 + | ((esdmode & 0xFFFF) << 16) + | ((sdmode & 0xFFFF) << 0) + ); + break; + case 2: + ddr->ddr_sdram_mode_5 = (0 + | ((esdmode & 0xFFFF) << 16) + | ((sdmode & 0xFFFF) << 0) + ); + break; + case 3: + ddr->ddr_sdram_mode_7 = (0 + | ((esdmode & 0xFFFF) << 16) + | ((sdmode & 0xFFFF) << 0) + ); + break; + } + } + debug("FSLDDR: ddr_sdram_mode_3 = 0x%08x\n", + ddr->ddr_sdram_mode_3); + debug("FSLDDR: ddr_sdram_mode_5 = 0x%08x\n", + ddr->ddr_sdram_mode_5); + debug("FSLDDR: ddr_sdram_mode_5 = 0x%08x\n", + ddr->ddr_sdram_mode_5); + } } #else /* !CONFIG_FSL_DDR3 */ @@ -821,7 +963,8 @@ static void set_ddr_sdram_mode(fsl_ddr_cfg_regs_t *ddr, const memctl_options_t *popts, const common_timing_params_t *common_dimm, unsigned int cas_latency, - unsigned int additive_latency) + unsigned int additive_latency, + const unsigned int unq_mrs_en) { unsigned short esdmode; /* Extended SDRAM mode */ unsigned short sdmode; /* SDRAM mode */ @@ -1024,7 +1167,7 @@ static void set_timing_cfg_4(fsl_ddr_cfg_regs_t *ddr, } /* DDR SDRAM Timing Configuration 5 (TIMING_CFG_5) */ -static void set_timing_cfg_5(fsl_ddr_cfg_regs_t *ddr) +static void set_timing_cfg_5(fsl_ddr_cfg_regs_t *ddr, unsigned int cas_latency) { unsigned int rodt_on = 0; /* Read to ODT on */ unsigned int rodt_off = 0; /* Read to ODT off */ @@ -1032,7 +1175,8 @@ static void set_timing_cfg_5(fsl_ddr_cfg_regs_t *ddr) unsigned int wodt_off = 0; /* Write to ODT off */ #if defined(CONFIG_FSL_DDR3) - rodt_on = 2; /* 2 clocks */ + /* rodt_on = timing_cfg_1[caslat] - timing_cfg_2[wrlat] + 1 */ + rodt_on = cas_latency - ((ddr->timing_cfg_2 & 0x00780000) >> 19) + 1; rodt_off = 4; /* 4 clocks */ wodt_on = 1; /* 1 clocks */ wodt_off = 4; /* 4 clocks */ @@ -1068,6 +1212,7 @@ static void set_ddr_zq_cntl(fsl_ddr_cfg_regs_t *ddr, unsigned int zq_en) | ((zqoper & 0xF) << 16) | ((zqcs & 0xF) << 8) ); + debug("FSLDDR: zq_cntl = 0x%08x\n", ddr->ddr_zq_cntl); } /* DDR Write Leveling Control (DDR_WRLVL_CNTL) */ @@ -1113,7 +1258,8 @@ static void set_ddr_wrlvl_cntl(fsl_ddr_cfg_regs_t *ddr, unsigned int wrlvl_en, /* * Write leveling start time * The value use for the DQS_ADJUST for the first sample - * when write leveling is enabled. + * when write leveling is enabled. It probably needs to be + * overriden per platform. */ wrlvl_start = 0x8; /* @@ -1135,6 +1281,7 @@ static void set_ddr_wrlvl_cntl(fsl_ddr_cfg_regs_t *ddr, unsigned int wrlvl_en, | ((wrlvl_wlr & 0x7) << 8) | ((wrlvl_start & 0x1F) << 0) ); + debug("FSLDDR: wrlvl_cntl = 0x%08x\n", ddr->ddr_wrlvl_cntl); } /* DDR Self Refresh Counter (DDR_SR_CNTR) */ @@ -1152,6 +1299,12 @@ static void set_ddr_eor(fsl_ddr_cfg_regs_t *ddr, const memctl_options_t *popts) } } +static void set_ddr_cdr1(fsl_ddr_cfg_regs_t *ddr, const memctl_options_t *popts) +{ + ddr->ddr_cdr1 = popts->ddr_cdr1; + debug("FSLDDR: ddr_cdr1 = 0x%08x\n", ddr->ddr_cdr1); +} + unsigned int check_fsl_memctl_config_regs(const fsl_ddr_cfg_regs_t *ddr) { @@ -1176,7 +1329,8 @@ compute_fsl_memctl_config_regs(const memctl_options_t *popts, fsl_ddr_cfg_regs_t *ddr, const common_timing_params_t *common_dimm, const dimm_params_t *dimm_params, - unsigned int dbw_cap_adj) + unsigned int dbw_cap_adj, + unsigned int size_only) { unsigned int i; unsigned int cas_latency; @@ -1184,6 +1338,8 @@ compute_fsl_memctl_config_regs(const memctl_options_t *popts, unsigned int sr_it; unsigned int zq_en; unsigned int wrlvl_en; + unsigned int ip_rev = 0; + unsigned int unq_mrs_en = 0; int cs_en = 1; memset(ddr, 0, sizeof(fsl_ddr_cfg_regs_t)); @@ -1394,10 +1550,17 @@ compute_fsl_memctl_config_regs(const memctl_options_t *popts, printf("CS%d is disabled.\n", i); } + /* + * In the case we only need to compute the ddr sdram size, we only need + * to set csn registers, so return from here. + */ + if (size_only) + return 0; + set_ddr_eor(ddr, popts); #if !defined(CONFIG_FSL_DDR1) - set_timing_cfg_0(ddr); + set_timing_cfg_0(ddr, popts); #endif set_timing_cfg_3(ddr, common_dimm, cas_latency); @@ -1405,26 +1568,30 @@ compute_fsl_memctl_config_regs(const memctl_options_t *popts, set_timing_cfg_2(ddr, popts, common_dimm, cas_latency, additive_latency); + set_ddr_cdr1(ddr, popts); set_ddr_sdram_cfg(ddr, popts, common_dimm); + ip_rev = fsl_ddr_get_version(); + if (ip_rev > 0x40400) + unq_mrs_en = 1; - set_ddr_sdram_cfg_2(ddr, popts); + set_ddr_sdram_cfg_2(ddr, popts, unq_mrs_en); set_ddr_sdram_mode(ddr, popts, common_dimm, - cas_latency, additive_latency); - set_ddr_sdram_mode_2(ddr, popts); + cas_latency, additive_latency, unq_mrs_en); + set_ddr_sdram_mode_2(ddr, popts, unq_mrs_en); set_ddr_sdram_interval(ddr, popts, common_dimm); set_ddr_data_init(ddr); set_ddr_sdram_clk_cntl(ddr, popts); set_ddr_init_addr(ddr); set_ddr_init_ext_addr(ddr); set_timing_cfg_4(ddr, popts); - set_timing_cfg_5(ddr); + set_timing_cfg_5(ddr, cas_latency); set_ddr_zq_cntl(ddr, zq_en); set_ddr_wrlvl_cntl(ddr, wrlvl_en, popts); set_ddr_sr_cntr(ddr, sr_it); - set_ddr_sdram_rcw(ddr, common_dimm); + set_ddr_sdram_rcw(ddr, popts, common_dimm); return check_fsl_memctl_config_regs(ddr); } diff --git a/arch/powerpc/cpu/mpc8xxx/ddr/ddr.h b/arch/powerpc/cpu/mpc8xxx/ddr/ddr.h index 98acb8d..c7c12c1 100644 --- a/arch/powerpc/cpu/mpc8xxx/ddr/ddr.h +++ b/arch/powerpc/cpu/mpc8xxx/ddr/ddr.h @@ -1,5 +1,5 @@ /* - * Copyright 2008 Freescale Semiconductor, Inc. + * Copyright 2008-2011 Freescale Semiconductor, Inc. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License @@ -55,7 +55,8 @@ typedef struct { #define STEP_ALL 0xFFF extern unsigned long long -fsl_ddr_compute(fsl_ddr_info_t *pinfo, unsigned int start_step); +fsl_ddr_compute(fsl_ddr_info_t *pinfo, unsigned int start_step, + unsigned int size_only); extern const char * step_to_string(unsigned int step); @@ -64,7 +65,8 @@ compute_fsl_memctl_config_regs(const memctl_options_t *popts, fsl_ddr_cfg_regs_t *ddr, const common_timing_params_t *common_dimm, const dimm_params_t *dimm_parameters, - unsigned int dbw_capacity_adjust); + unsigned int dbw_capacity_adjust, + unsigned int size_only); extern unsigned int compute_lowest_common_dimm_parameters(const dimm_params_t *dimm_params, common_timing_params_t *outpdimm, @@ -78,5 +80,5 @@ extern void check_interleaving_options(fsl_ddr_info_t *pinfo); extern unsigned int mclk_to_picos(unsigned int mclk); extern unsigned int get_memory_clk_period_ps(void); extern unsigned int picos_to_mclk(unsigned int picos); - +extern unsigned int fsl_ddr_get_mem_data_rate(void); #endif diff --git a/arch/powerpc/cpu/mpc8xxx/ddr/lc_common_dimm_params.c b/arch/powerpc/cpu/mpc8xxx/ddr/lc_common_dimm_params.c index 029e566..a58e5a9 100644 --- a/arch/powerpc/cpu/mpc8xxx/ddr/lc_common_dimm_params.c +++ b/arch/powerpc/cpu/mpc8xxx/ddr/lc_common_dimm_params.c @@ -1,5 +1,5 @@ /* - * Copyright 2008 Freescale Semiconductor, Inc. + * Copyright 2008-2011 Freescale Semiconductor, Inc. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License @@ -98,7 +98,7 @@ compute_lowest_common_dimm_parameters(const dimm_params_t *dimm_params, unsigned int tDQSQ_max_ps = 0; unsigned int tQHS_ps = 0; - unsigned int temp1, temp2, temp3; + unsigned int temp1, temp2; unsigned int additive_latency = 0; #if !defined(CONFIG_FSL_DDR3) const unsigned int mclk_ps = get_memory_clk_period_ps(); @@ -215,18 +215,14 @@ compute_lowest_common_dimm_parameters(const dimm_params_t *dimm_params, } outpdimm->all_DIMMs_registered = 0; + outpdimm->all_DIMMs_unbuffered = 0; if (temp1 && !temp2) { outpdimm->all_DIMMs_registered = 1; - } - - outpdimm->all_DIMMs_unbuffered = 0; - if (!temp1 && temp2) { + printf("Detected RDIMM(s)\n"); + } else if (!temp1 && temp2) { outpdimm->all_DIMMs_unbuffered = 1; - } - - /* CHECKME: */ - if (!outpdimm->all_DIMMs_registered - && !outpdimm->all_DIMMs_unbuffered) { + printf("Detected UDIMM(s)\n"); + } else { printf("ERROR: Mix of registered buffered and unbuffered " "DIMMs detected!\n"); } @@ -237,7 +233,7 @@ compute_lowest_common_dimm_parameters(const dimm_params_t *dimm_params, outpdimm->rcw[j] = dimm_params[0].rcw[j]; for (i = 1; i < number_of_dimms; i++) if (dimm_params[i].rcw[j] != dimm_params[0].rcw[j]) { - temp3 = 1; + temp1 = 1; break; } } diff --git a/arch/powerpc/cpu/mpc8xxx/ddr/main.c b/arch/powerpc/cpu/mpc8xxx/ddr/main.c index 6d582e9..bb96d66 100644 --- a/arch/powerpc/cpu/mpc8xxx/ddr/main.c +++ b/arch/powerpc/cpu/mpc8xxx/ddr/main.c @@ -1,5 +1,5 @@ /* - * Copyright 2008 Freescale Semiconductor, Inc. + * Copyright 2008-2011 Freescale Semiconductor, Inc. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License @@ -233,7 +233,8 @@ int step_assign_addresses(fsl_ddr_info_t *pinfo, } unsigned long long -fsl_ddr_compute(fsl_ddr_info_t *pinfo, unsigned int start_step) +fsl_ddr_compute(fsl_ddr_info_t *pinfo, unsigned int start_step, + unsigned int size_only) { unsigned int i, j; unsigned int all_controllers_memctl_interleaving = 0; @@ -338,7 +339,8 @@ fsl_ddr_compute(fsl_ddr_info_t *pinfo, unsigned int start_step) &pinfo->memctl_opts[i], &ddr_reg[i], &timing_params[i], pinfo->dimm_params[i], - dbw_capacity_adjust[i]); + dbw_capacity_adjust[i], + size_only); } default: @@ -405,7 +407,7 @@ phys_size_t fsl_ddr_sdram(void) memset(&info, 0, sizeof(fsl_ddr_info_t)); /* Compute it once normally. */ - total_memory = fsl_ddr_compute(&info, STEP_GET_SPD); + total_memory = fsl_ddr_compute(&info, STEP_GET_SPD, 0); /* Check for memory controller interleaving. */ memctl_interleaved = 0; @@ -430,7 +432,8 @@ phys_size_t fsl_ddr_sdram(void) info.memctl_opts[i].memctl_interleaving = 0; debug("Recomputing with memctl_interleaving off.\n"); total_memory = fsl_ddr_compute(&info, - STEP_ASSIGN_ADDRESSES); + STEP_ASSIGN_ADDRESSES, + 0); } } @@ -469,11 +472,30 @@ phys_size_t fsl_ddr_sdram(void) /* Check for 4G or more. Bad. */ if (total_memory >= (1ull << 32)) { printf("Detected %lld MB of memory\n", total_memory >> 20); - printf("This U-Boot only supports < 4G of DDR\n"); - printf("You could rebuild it with CONFIG_PHYS_64BIT\n"); + printf(" This U-Boot only supports < 4G of DDR\n"); + printf(" You could rebuild it with CONFIG_PHYS_64BIT\n"); + printf(" "); /* re-align to match init_func_ram print */ total_memory = CONFIG_MAX_MEM_MAPPED; } #endif return total_memory; } + +/* + * fsl_ddr_sdram_size() - This function only returns the size of the total + * memory without setting ddr control registers. + */ +phys_size_t +fsl_ddr_sdram_size(void) +{ + fsl_ddr_info_t info; + unsigned long long total_memory = 0; + + memset(&info, 0 , sizeof(fsl_ddr_info_t)); + + /* Compute it once normally. */ + total_memory = fsl_ddr_compute(&info, STEP_GET_SPD, 1); + + return total_memory; +} diff --git a/arch/powerpc/cpu/mpc8xxx/ddr/options.c b/arch/powerpc/cpu/mpc8xxx/ddr/options.c index 774c0e4..6ccc3b0 100644 --- a/arch/powerpc/cpu/mpc8xxx/ddr/options.c +++ b/arch/powerpc/cpu/mpc8xxx/ddr/options.c @@ -1,5 +1,5 @@ /* - * Copyright 2008, 2010 Freescale Semiconductor, Inc. + * Copyright 2008, 2010-2011 Freescale Semiconductor, Inc. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the Free @@ -13,28 +13,338 @@ #include "ddr.h" +/* + * Use our own stack based buffer before relocation to allow accessing longer + * hwconfig strings that might be in the environment before we've relocated. + * This is pretty fragile on both the use of stack and if the buffer is big + * enough. However we will get a warning from getenv_f for the later. + */ +#define HWCONFIG_BUFFER_SIZE 128 + /* Board-specific functions defined in each board's ddr.c */ 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, unsigned int ctrl_num) { 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 + * the environment but need it for ddr config params + */ + if (getenv_f("hwconfig", buffer, sizeof(buffer)) > 0) + 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; } @@ -81,10 +391,13 @@ unsigned int populate_memctl_options(int all_DIMMs_registered, /* Operational Mode Paramters */ /* Pick ECC modes */ -#ifdef CONFIG_DDR_ECC - popts->ECC_mode = 1; /* 0 = disabled, 1 = enabled */ -#else popts->ECC_mode = 0; /* 0 = disabled, 1 = enabled */ +#ifdef CONFIG_DDR_ECC + if (hwconfig_sub_f("fsl_ddr", "ecc", buf)) { + if (hwconfig_subarg_cmp_f("fsl_ddr", "ecc", "on", buf)) + popts->ECC_mode = 1; + } else + popts->ECC_mode = 1; #endif popts->ECC_init_using_memctl = 1; /* 0 = use DMA, 1 = use memctl */ @@ -159,6 +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 * @@ -221,7 +537,7 @@ unsigned int populate_memctl_options(int all_DIMMs_registered, * should be a subset of the requested configuration. */ #if (CONFIG_NUM_DDR_CONTROLLERS > 1) - if (hwconfig_sub("fsl_ddr", "ctlr_intlv")) { + if (hwconfig_sub_f("fsl_ddr", "ctlr_intlv", buf)) { if (pdimm[0].n_ranks == 0) { printf("There is no rank on CS0 for controller %d. Because only" " rank on CS0 and ranks chip-select interleaved with CS0" @@ -234,19 +550,25 @@ unsigned int populate_memctl_options(int all_DIMMs_registered, * test null first. if CONFIG_HWCONFIG is not defined * hwconfig_arg_cmp returns non-zero */ - if (hwconfig_subarg_cmp("fsl_ddr", "ctlr_intlv", "null")) { + if (hwconfig_subarg_cmp_f("fsl_ddr", "ctlr_intlv", + "null", buf)) { popts->memctl_interleaving = 0; debug("memory controller interleaving disabled.\n"); - } else if (hwconfig_subarg_cmp("fsl_ddr", "ctlr_intlv", "cacheline")) + } else if (hwconfig_subarg_cmp_f("fsl_ddr", + "ctlr_intlv", + "cacheline", buf)) popts->memctl_interleaving_mode = FSL_DDR_CACHE_LINE_INTERLEAVING; - else if (hwconfig_subarg_cmp("fsl_ddr", "ctlr_intlv", "page")) + else if (hwconfig_subarg_cmp_f("fsl_ddr", "ctlr_intlv", + "page", buf)) popts->memctl_interleaving_mode = FSL_DDR_PAGE_INTERLEAVING; - else if (hwconfig_subarg_cmp("fsl_ddr", "ctlr_intlv", "bank")) + else if (hwconfig_subarg_cmp_f("fsl_ddr", "ctlr_intlv", + "bank", buf)) popts->memctl_interleaving_mode = FSL_DDR_BANK_INTERLEAVING; - else if (hwconfig_subarg_cmp("fsl_ddr", "ctlr_intlv", "superbank")) + else if (hwconfig_subarg_cmp_f("fsl_ddr", "ctlr_intlv", + "superbank", buf)) popts->memctl_interleaving_mode = FSL_DDR_SUPERBANK_INTERLEAVING; else { @@ -256,19 +578,24 @@ unsigned int populate_memctl_options(int all_DIMMs_registered, } } #endif - if ((hwconfig_sub("fsl_ddr", "bank_intlv")) && + if ((hwconfig_sub_f("fsl_ddr", "bank_intlv", buf)) && (CONFIG_CHIP_SELECTS_PER_CTRL > 1)) { /* test null first. if CONFIG_HWCONFIG is not defined, - * hwconfig_arg_cmp returns non-zero */ - if (hwconfig_subarg_cmp("fsl_ddr", "bank_intlv", "null")) + * hwconfig_subarg_cmp_f returns non-zero */ + if (hwconfig_subarg_cmp_f("fsl_ddr", "bank_intlv", + "null", buf)) debug("bank interleaving disabled.\n"); - else if (hwconfig_subarg_cmp("fsl_ddr", "bank_intlv", "cs0_cs1")) + else if (hwconfig_subarg_cmp_f("fsl_ddr", "bank_intlv", + "cs0_cs1", buf)) popts->ba_intlv_ctl = FSL_DDR_CS0_CS1; - else if (hwconfig_subarg_cmp("fsl_ddr", "bank_intlv", "cs2_cs3")) + else if (hwconfig_subarg_cmp_f("fsl_ddr", "bank_intlv", + "cs2_cs3", buf)) popts->ba_intlv_ctl = FSL_DDR_CS2_CS3; - else if (hwconfig_subarg_cmp("fsl_ddr", "bank_intlv", "cs0_cs1_and_cs2_cs3")) + else if (hwconfig_subarg_cmp_f("fsl_ddr", "bank_intlv", + "cs0_cs1_and_cs2_cs3", buf)) popts->ba_intlv_ctl = FSL_DDR_CS0_CS1_AND_CS2_CS3; - else if (hwconfig_subarg_cmp("fsl_ddr", "bank_intlv", "cs0_cs1_cs2_cs3")) + else if (hwconfig_subarg_cmp_f("fsl_ddr", "bank_intlv", + "cs0_cs1_cs2_cs3", buf)) popts->ba_intlv_ctl = FSL_DDR_CS0_CS1_CS2_CS3; else printf("hwconfig has unrecognized parameter for bank_intlv.\n"); @@ -342,10 +669,11 @@ 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")) + if (hwconfig_sub_f("fsl_ddr", "addr_hash", buf)) { + if (hwconfig_subarg_cmp_f("fsl_ddr", "addr_hash", "null", buf)) popts->addr_hash = 0; - else if (hwconfig_subarg_cmp("fsl_ddr", "addr_hash", "true")) + else if (hwconfig_subarg_cmp_f("fsl_ddr", "addr_hash", + "true", buf)) popts->addr_hash = 1; } @@ -387,3 +715,34 @@ void check_interleaving_options(fsl_ddr_info_t *pinfo) "Memory controller interleaving disabled.\n"); } } + +int fsl_use_spd(void) +{ + int use_spd = 0; + +#ifdef CONFIG_DDR_SPD + char buffer[HWCONFIG_BUFFER_SIZE]; + char *buf = NULL; + + /* + * Extract hwconfig from environment since we have not properly setup + * the environment but need it for ddr config params + */ + if (getenv_f("hwconfig", buffer, sizeof(buffer)) > 0) + buf = buffer; + + /* if hwconfig is not enabled, or "sdram" is not defined, use spd */ + if (hwconfig_sub_f("fsl_ddr", "sdram", buf)) { + if (hwconfig_subarg_cmp_f("fsl_ddr", "sdram", "spd", buf)) + use_spd = 1; + else if (hwconfig_subarg_cmp_f("fsl_ddr", "sdram", + "fixed", buf)) + use_spd = 0; + else + use_spd = 1; + } else + use_spd = 1; +#endif + + return use_spd; +} |