diff options
| -rw-r--r-- | src/northbridge/intel/x4x/raminit_ddr2.c | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/src/northbridge/intel/x4x/raminit_ddr2.c b/src/northbridge/intel/x4x/raminit_ddr2.c index eca7189145..35caaa6b73 100644 --- a/src/northbridge/intel/x4x/raminit_ddr2.c +++ b/src/northbridge/intel/x4x/raminit_ddr2.c @@ -2106,15 +2106,19 @@ void raminit_ddr2(struct sysinfo *s) printk(BIOS_DEBUG, "Done power settings\n"); // ME related - if (RANK_IS_POPULATED(s->dimms, 0, 0) - || RANK_IS_POPULATED(s->dimms, 1, 0)) { - MCHBAR8(0xa2f) = MCHBAR8(0xa2f) | (1 << 0); + /* + * FIXME: This locks some registers like bit1 of GGC + * and is only needed in case of ME being used. + */ + if (ME_UMA_SIZEMB != 0) { + if (RANK_IS_POPULATED(s->dimms, 0, 0) + || RANK_IS_POPULATED(s->dimms, 1, 0)) + MCHBAR8(0xa2f) = MCHBAR8(0xa2f) | (1 << 0); + if (RANK_IS_POPULATED(s->dimms, 0, 1) + || RANK_IS_POPULATED(s->dimms, 1, 1)) + MCHBAR8(0xa2f) = MCHBAR8(0xa2f) | (1 << 1); + MCHBAR32(0xa30) = MCHBAR32(0xa30) | (1 << 26); } - if (RANK_IS_POPULATED(s->dimms, 0, 1) - || RANK_IS_POPULATED(s->dimms, 1, 1)) { - MCHBAR8(0xa2f) = MCHBAR8(0xa2f) | (1 << 1); - } - MCHBAR32(0xa30) = MCHBAR32(0xa30) | (1 << 26); printk(BIOS_DEBUG, "Done ddr2\n"); } |