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powerpc/8xxx: Enable DDR3 RDIMM support

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Enabled registered DIMMs using data from SPD. RDIMMs have registers
which need to be configured before using. The register configuration
words are stored in SPD byte 60~116 (JEDEC standard No.21-C). Software
should read those RCWs and put into DDR controller before initialization.

Signed-off-by: York Sun <yorksun@freescale.com>
This commit is contained in:
york 2010-07-02 22:25:55 +00:00 • committed by Kumar Gala
parent 7fd101c97b
commit 9490ff4864
6 changed files with 72 additions and 53 deletions
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14
include/ddr_spd.h
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@ -243,6 +243,20 @@ typedef struct ddr3_spd_eeprom_s {
unsigned char mod_thickness;
/* 62 (Registered) Reference Raw Card Used */
unsigned char ref_raw_card;
/* 63 DIMM Module Attributes */
unsigned char modu_attr;
/* 64 RDIMM Thermal Heat Spreader Solution */
unsigned char thermal;
/* 65 Register Manufacturer ID Code, Least Significant Byte */
unsigned char reg_id_lo;
/* 66 Register Manufacturer ID Code, Most Significant Byte */
unsigned char reg_id_hi;
/* 67 Register Revision Number */
unsigned char reg_rev;
/* 68 Register Type */
unsigned char reg_type;
/* 69-76 RC1,3,5...15 (MS Nibble) / RC0,2,4...14 (LS Nibble) */
unsigned char rcw[8];
} registered;
unsigned char uc[57]; /* 60-116 Module-Specific Section */
} mod_section;