diff options
Diffstat (limited to 'src/northbridge/intel/gm45/ram_calc.c')
| -rw-r--r-- | src/northbridge/intel/gm45/ram_calc.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/src/northbridge/intel/gm45/ram_calc.c b/src/northbridge/intel/gm45/ram_calc.c index 011d90347b8f..0e953419fec6 100644 --- a/src/northbridge/intel/gm45/ram_calc.c +++ b/src/northbridge/intel/gm45/ram_calc.c @@ -83,7 +83,7 @@ u32 decode_tseg_size(u8 esmramc) } } -static uintptr_t smm_region_start(void) +uintptr_t smm_region_start(void) { const pci_devfn_t dev = PCI_DEV(0, 0, 0); @@ -135,14 +135,12 @@ void platform_enter_postcar(void) /* Cache RAM as WB from 0 -> CACHE_TMP_RAMTOP. */ postcar_frame_add_mtrr(&pcf, 0, CACHE_TMP_RAMTOP, MTRR_TYPE_WRBACK); - /* Cache two separate 4 MiB regions below the top of ram, this - * satisfies MTRR alignment requirements. If you modify this to - * cover TSEG, make sure UMA region is not set with WRBACK as it - * causes hard-to-recover boot failures. + /* Cache a 8 MiB region below the top of ram and 8 MiB above top of + * ram to cover both cbmem as the TSEG region. */ top_of_ram = (uintptr_t)cbmem_top(); - postcar_frame_add_mtrr(&pcf, top_of_ram - 4*MiB, 4*MiB, MTRR_TYPE_WRBACK); - postcar_frame_add_mtrr(&pcf, top_of_ram - 8*MiB, 4*MiB, MTRR_TYPE_WRBACK); + postcar_frame_add_mtrr(&pcf, top_of_ram - 8*MiB, 16*MiB, + MTRR_TYPE_WRBACK); run_postcar_phase(&pcf); |