diff options
Diffstat (limited to 'src/northbridge/intel/i82810')
| -rw-r--r-- | src/northbridge/intel/i82810/raminit.c | 54 | ||||
| -rw-r--r-- | src/northbridge/intel/i82810/raminit.h | 57 |
2 files changed, 54 insertions, 57 deletions
diff --git a/src/northbridge/intel/i82810/raminit.c b/src/northbridge/intel/i82810/raminit.c index bdd945513d..9927cb65c0 100644 --- a/src/northbridge/intel/i82810/raminit.c +++ b/src/northbridge/intel/i82810/raminit.c @@ -58,6 +58,60 @@ Macros and definitions. #define RAM_COMMAND_CBR 0x7 /* CBR */ /* + * This table is used to translate the value read from SPD Byte 31 to a value + * the northbridge can understand in DRP, aka Rx52[7:4], [3:0]. Where most + * northbridges have some sort of simple calculation that can be done for this, + * I haven't yet figured out one for this northbridge. Until someone does, + * this table is necessary. + */ +static const u8 translate_spd_to_i82810[] = { + /* Note: 4MB sizes are not supported, so dual-sided DIMMs with a 4MB + * side can't be either, at least for now. + */ + /* TODO: For above case, only use the other side if > 4MB, and get some + * of these DIMMs to test it with. Same for unsupported 128/x sizes. + */ + + /* SPD Byte 31 Memory Size [Side 1/2] */ + 0xff, /* 0x01 No memory */ + 0xff, /* 0x01 4/0 */ + 0x01, /* 0x02 8/0 */ + 0xff, /* 0x03 8/4 */ + 0x04, /* 0x04 16/0 or 16 */ + 0xff, /* 0x05 16/4 */ + 0x05, /* 0x06 16/8 */ + 0xff, /* 0x07 Invalid */ + 0x07, /* 0x08 32/0 or 32 */ + 0xff, /* 0x09 32/4 */ + 0xff, /* 0x0A 32/8 */ + 0xff, /* 0x0B Invalid */ + 0x08, /* 0x0C 32/16 */ + 0xff, 0xff, 0xff, /* 0x0D-0F Invalid */ + 0x0a, /* 0x10 64/0 or 64 */ + 0xff, /* 0x11 64/4 */ + 0xff, /* 0x12 64/8 */ + 0xff, /* 0x13 Invalid */ + 0xff, /* 0x14 64/16 */ + 0xff, 0xff, 0xff, /* 0x15-17 Invalid */ + 0x0b, /* 0x18 64/32 */ + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x19-1f Invalid */ + 0x0d, /* 0x20 128/0 or 128 */ + /* These configurations are not supported by the i810 */ + 0xff, /* 0x21 128/4 */ + 0xff, /* 0x22 128/8 */ + 0xff, /* 0x23 Invalid */ + 0xff, /* 0x24 128/16 */ + 0xff, 0xff, 0xff, /* 0x25-27 Invalid */ + 0xff, /* 0x28 128/32 */ + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x29-2f Invalid */ + 0x0e, /* 0x30 128/64 */ + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, /* 0x31-3f Invalid */ + 0x0f, /* 0x40 256/0 or 256 */ + /* Anything larger is not supported by the 82810. */ +}; + +/* * Table which returns the RAM size in MB when fed the DRP[7:4] or [3:0] value. * Note that 2 is a value which the DRP should never be programmed to. * Some size values appear twice, due to single-sided vs dual-sided banks. diff --git a/src/northbridge/intel/i82810/raminit.h b/src/northbridge/intel/i82810/raminit.h index 31c86cb31e..f35832ecd0 100644 --- a/src/northbridge/intel/i82810/raminit.h +++ b/src/northbridge/intel/i82810/raminit.h @@ -27,61 +27,4 @@ /* DIMM0 is at 0x50, DIMM1 is at 0x51. */ #define DIMM_SPD_BASE 0x50 -/* The following table has been bumped over to this header to avoid clutter in - * raminit.c. It's used to translate the value read from SPD Byte 31 to a value - * the northbridge can understand in DRP, aka Rx52[7:4], [3:0]. Where most - * northbridges have some sort of simple calculation that can be done for this, - * I haven't yet figured out one for this northbridge. Until someone does, - * this table is necessary. - */ - -/* TODO: Find a better way of doing this. */ - -static const uint8_t translate_spd_to_i82810[] = { - /* Note: 4MB sizes are not supported, so dual-sided DIMMs with a 4MB - * side can't be either, at least for now. - */ - /* TODO: For above case, only use the other side if > 4MB, and get some - * of these DIMMs to test it with. Same for unsupported 128/x sizes. - */ - - /* SPD Byte 31 Memory Size [Side 1/2] */ - 0xff, /* 0x01 No memory */ - 0xff, /* 0x01 4/0 */ - 0x01, /* 0x02 8/0 */ - 0xff, /* 0x03 8/4 */ - 0x04, /* 0x04 16/0 or 16 */ - 0xff, /* 0x05 16/4 */ - 0x05, /* 0x06 16/8 */ - 0xff, /* 0x07 Invalid */ - 0x07, /* 0x08 32/0 or 32 */ - 0xff, /* 0x09 32/4 */ - 0xff, /* 0x0A 32/8 */ - 0xff, /* 0x0B Invalid */ - 0x08, /* 0x0C 32/16 */ - 0xff, 0xff, 0xff, /* 0x0D-0F Invalid */ - 0x0a, /* 0x10 64/0 or 64 */ - 0xff, /* 0x11 64/4 */ - 0xff, /* 0x12 64/8 */ - 0xff, /* 0x13 Invalid */ - 0xff, /* 0x14 64/16 */ - 0xff, 0xff, 0xff, /* 0x15-17 Invalid */ - 0x0b, /* 0x18 64/32 */ - 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x19-1f Invalid */ - 0x0d, /* 0x20 128/0 or 128 */ - /* These configurations are not supported by the i810 */ - 0xff, /* 0x21 128/4 */ - 0xff, /* 0x22 128/8 */ - 0xff, /* 0x23 Invalid */ - 0xff, /* 0x24 128/16 */ - 0xff, 0xff, 0xff, /* 0x25-27 Invalid */ - 0xff, /* 0x28 128/32 */ - 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x29-2f Invalid */ - 0x0e, /* 0x30 128/64 */ - 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, - 0xff, 0xff, 0xff, /* 0x31-3f Invalid */ - 0x0f, /* 0x40 256/0 or 256 */ - /* Anything larger is not supported by the 82810. */ -}; - #endif /* NORTHBRIDGE_INTEL_I82810_RAMINIT_H */ |