From 29cb06abca665954e910f91397957ec93c627e86 Mon Sep 17 00:00:00 2001 From: Zheng Bao Date: Mon, 6 Dec 2010 08:19:38 +0000 Subject: [PATCH] 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 Acked-by: QingPei Wang git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6142 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1 --- src/southbridge/amd/rs780/rs780_gfx.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) 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);