diff options
Diffstat (limited to 'src/mainboard/emulation/qemu-q35/memmap.c')
| -rw-r--r-- | src/mainboard/emulation/qemu-q35/memmap.c | 30 |
1 files changed, 21 insertions, 9 deletions
diff --git a/src/mainboard/emulation/qemu-q35/memmap.c b/src/mainboard/emulation/qemu-q35/memmap.c index 34656134ff..3f3ced23f8 100644 --- a/src/mainboard/emulation/qemu-q35/memmap.c +++ b/src/mainboard/emulation/qemu-q35/memmap.c @@ -78,6 +78,26 @@ void smm_region(uintptr_t *start, size_t *size) printk(BIOS_SPEW, "SMM_BASE: 0x%08lx, SMM_SIZE: %zu MiB\n", *start, *size / MiB); } +void smm_open(void) +{ + /* Set D_OPEN */ + if (CONFIG(SMM_ASEG)) + pci_write_config8(HOST_BRIDGE, SMRAMC, D_OPEN | G_SMRAME | C_BASE_SEG); + + if (CONFIG(SMM_TSEG)) + pci_and_config8(HOST_BRIDGE, ESMRAMC, ~T_EN); +} + +void smm_close(void) +{ + /* Clear D_OPEN */ + if (CONFIG(SMM_ASEG)) + pci_write_config8(HOST_BRIDGE, SMRAMC, G_SMRAME | C_BASE_SEG); + + if (CONFIG(SMM_TSEG)) + pci_or_config8(HOST_BRIDGE, ESMRAMC, T_EN); +} + void smm_lock(void) { /* @@ -87,13 +107,5 @@ void smm_lock(void) */ printk(BIOS_DEBUG, "Locking SMM.\n"); - if (CONFIG(SMM_TSEG)) - pci_or_config8(HOST_BRIDGE, ESMRAMC, T_EN); - - pci_write_config8(PCI_DEV(0, 0, 0), SMRAMC, D_LCK | G_SMRAME | C_BASE_SEG); -} - -void smm_open_aseg(void) -{ - pci_write_config8(PCI_DEV(0, 0, 0), SMRAMC, G_SMRAME | C_BASE_SEG | D_OPEN); + pci_write_config8(HOST_BRIDGE, SMRAMC, D_LCK | G_SMRAME | C_BASE_SEG); } |