The wiki is being retired!
Documentation is now handled by the same processes we use for code: Add something to the Documentation/ directory in the coreboot repo, and it will be rendered to https://doc.coreboot.org/. Contributions welcome!
- MA map type is set incorrectly for some types of DIMM. In progress
- some memory errors persist even once the MA map type is set correctly; This may be caused by LB passing an incorrect e820 memory map.
MA Map Types
The values for MA map type refer to bits 15-13, 7-5, and 3-1 of offset 0x59-0x58 of the VT8601A host bridge. See the VT8601/PLE133 data sheet for details. All values other than 0xx and 100 are documented as "reserved (do not program)"
|DIMM size||Row Density (SPD 31)||Width (SPD 13)||Rows(SPD 5)||MA map type|