diff options
| author | Vladimir Serbinenko <phcoder@gmail.com> | 2014-05-18 11:05:56 +0200 |
|---|---|---|
| committer | Vladimir Serbinenko <phcoder@gmail.com> | 2014-07-29 00:52:28 +0200 |
| commit | 7686a56574a6773717b49a51786f301970d1c69c (patch) | |
| tree | 40dcb474d1d0c88095e45c37044e25df5b6e2f20 /src/device/dram | |
| parent | b37ee1ee7c69836cfb333c13f787a1c3ba580b8f (diff) | |
sandy/ivybridge: Native raminit.
Based on damo22's work and my X230 tracing.
Works for my X230 in a variety of RAM configs.
Also-By: Damien Zammit <damien@zamaudio.com>
Change-Id: I1aa024c55a8416fc53b25e7123037df0e55a2769
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Signed-off-by: Damien Zammit <damien@zamaudio.com>
Reviewed-on: http://review.coreboot.org/5786
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Diffstat (limited to 'src/device/dram')
| -rw-r--r-- | src/device/dram/ddr3.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/src/device/dram/ddr3.c b/src/device/dram/ddr3.c index 9b4f490630..a43caed5ab 100644 --- a/src/device/dram/ddr3.c +++ b/src/device/dram/ddr3.c @@ -110,7 +110,7 @@ int spd_decode_ddr3(dimm_attr * dimm, spd_raw_data spd) { int ret; u16 crc, spd_crc; - u8 ftb_divisor, ftb_dividend, capacity_shift, bus_width, sdram_width; + u8 ftb_divisor, ftb_dividend, capacity_shift, bus_width; u8 reg8; u32 mtb; /* medium time base */ unsigned int val, param; @@ -209,8 +209,8 @@ int spd_decode_ddr3(dimm_attr * dimm, spd_raw_data spd) printram(" Invalid SDRAM width\n"); ret = SPD_STATUS_INVALID_FIELD; } - sdram_width = (4 << val); - printram(" SDRAM width : %u\n", sdram_width); + dimm->width = (4 << val); + printram(" SDRAM width : %u\n", dimm->width); /* Memory bus width */ reg8 = spd[8]; @@ -236,7 +236,7 @@ int spd_decode_ddr3(dimm_attr * dimm, spd_raw_data spd) * capacity_shift * The rest is the JEDEC formula */ dimm->size_mb = ((1 << (capacity_shift + (25 - 20))) * bus_width - * dimm->ranks) / sdram_width; + * dimm->ranks) / dimm->width; /* Fine Timebase (FTB) Dividend/Divisor */ /* Dividend */ @@ -334,6 +334,9 @@ int spd_decode_ddr3(dimm_attr * dimm, spd_raw_data spd) printram(" DIMM Rank1 Address bits mirrored!!!\n"); } + dimm->reference_card = spd[62] & 0x1f; + printram(" DIMM Reference card %c\n", 'A' + dimm->reference_card); + return ret; } |