[coreboot] [commit] r6142 - trunk/src/southbridge/amd/rs780
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Mon Dec 6 09:19:38 CET 2010
Author: zbao
Date: Mon Dec 6 09:19:38 2010
New Revision: 6142
URL: https://tracker.coreboot.org/trac/coreboot/changeset/6142
Log:
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 at amd.com>
Acked-by: QingPei Wang <wangqingpei at gmail.com>
Modified:
trunk/src/southbridge/amd/rs780/rs780_gfx.c
Modified: trunk/src/southbridge/amd/rs780/rs780_gfx.c
==============================================================================
--- trunk/src/southbridge/amd/rs780/rs780_gfx.c Mon Dec 6 02:11:12 2010 (r6141)
+++ trunk/src/southbridge/amd/rs780/rs780_gfx.c Mon Dec 6 09:19:38 2010 (r6142)
@@ -1302,8 +1302,10 @@
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 @@
}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);
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