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sandy/ivybridge: Native raminit.

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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>
This commit is contained in:
Vladimir Serbinenko
2014-05-18 11:05:56 +02:00
parent b37ee1ee7c
commit 7686a56574
21 changed files with 5411 additions and 109 deletions
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11
src/device/dram/ddr3.c
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@@ -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;
}