diff options
| author | Zheng Bao <zheng.bao@amd.com> | 2010-12-06 08:19:38 +0000 |
|---|---|---|
| committer | Zheng Bao <Zheng.Bao@amd.com> | 2010-12-06 08:19:38 +0000 |
| commit | 29cb06abca665954e910f91397957ec93c627e86 (patch) | |
| tree | fcce2b56b7e0de9c1b8f71e86d8659ceb8c00228 /src/southbridge/amd | |
| parent | a8c8490c114f97462a3060ce77777ea546d0bbc4 (diff) | |
| download | coreboot-29cb06abca665954e910f91397957ec93c627e86.tar.xz | |
Before lane reversal,
De-asserts STRAP_BIF_all_valid for
PCIE-GFX core.
After lane reversal,
Asserts STRAP_BIF_all_valid for
PCIE-GFX core.
Signed-off-by: Zheng Bao <zheng.bao@amd.com>
Acked-by: QingPei Wang <wangqingpei@gmail.com>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6142 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/southbridge/amd')
| -rw-r--r-- | src/southbridge/amd/rs780/rs780_gfx.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/southbridge/amd/rs780/rs780_gfx.c b/src/southbridge/amd/rs780/rs780_gfx.c index 18836675e0..1763c36047 100644 --- a/src/southbridge/amd/rs780/rs780_gfx.c +++ b/src/southbridge/amd/rs780/rs780_gfx.c @@ -1302,8 +1302,10 @@ void rs780_gfx_init(device_t nb_dev, device_t dev, u32 port) if(is_dev3_present()){ /* step 1, lane reversal (only need if CMOS option is enabled) */ if (cfg->gfx_lane_reversal) { + set_nbmisc_enable_bits(nb_dev, 0x36, 1 << 31, 1 << 31); set_nbmisc_enable_bits(nb_dev, 0x33, 1 << 2, 1 << 2); set_nbmisc_enable_bits(nb_dev, 0x33, 1 << 3, 1 << 3); + set_nbmisc_enable_bits(nb_dev, 0x36, 1 << 31, 0 << 31); } printk(BIOS_DEBUG, "rs780_gfx_init step1.\n"); /* step 1.1, dual-slot gfx configuration (only need if CMOS option is enabled) */ @@ -1317,10 +1319,11 @@ void rs780_gfx_init(device_t nb_dev, device_t dev, u32 port) }else{ if (cfg->gfx_lane_reversal) { + set_nbmisc_enable_bits(nb_dev, 0x36, 1 << 31, 1 << 31); set_nbmisc_enable_bits(nb_dev, 0x33, 1 << 2, 1 << 2); + set_nbmisc_enable_bits(nb_dev, 0x36, 1 << 31, 0 << 31); } printk(BIOS_DEBUG, "rs780_gfx_init step1.\n"); - printk(BIOS_DEBUG, "rs780_gfx_init step2.\n"); if((dev->path.pci.devfn >> 3) == 2) single_port_configuration(nb_dev, dev); |