diff options
| author | Kerry Sheh <shekairui@gmail.com> | 2011-09-14 10:04:19 +0800 |
|---|---|---|
| committer | Patrick Georgi <patrick@georgi-clan.de> | 2011-09-14 07:47:30 +0200 |
| commit | 8c69b1d13b12a23d22de19b9de2e161e6064021c (patch) | |
| tree | fdd2b4c452e0ea710d1bd456681af9834b503b40 /src/southbridge/amd | |
| parent | a25828dd0eaec09334ccbe05559d0e121e698b0d (diff) | |
rs780: hide unused gfx ports and gpp ports
Hide the unused gfx ports and gpp ports if they are not configured as hotplug.
lspci -vvv will get more accurate information under Linux,
tested on avalue/eax-785e.
Change-Id: Iaabfd362a0a01f21d0f49aa2bd2d26f9259013fb
Signed-off-by: Kerry Sheh <kerry.she@amd.com>
Signed-off-by: Kerry Sheh <shekairui@gmail.com>
Reviewed-on: http://review.coreboot.org/206
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Diffstat (limited to 'src/southbridge/amd')
| -rw-r--r-- | src/southbridge/amd/rs780/gfx.c | 2 | ||||
| -rw-r--r-- | src/southbridge/amd/rs780/pcie.c | 13 | ||||
| -rw-r--r-- | src/southbridge/amd/rs780/rs780.c | 5 | ||||
| -rw-r--r-- | src/southbridge/amd/rs780/rs780.h | 1 |
4 files changed, 20 insertions, 1 deletions
diff --git a/src/southbridge/amd/rs780/gfx.c b/src/southbridge/amd/rs780/gfx.c index 9262bb9437..3c06d441ce 100644 --- a/src/southbridge/amd/rs780/gfx.c +++ b/src/southbridge/amd/rs780/gfx.c @@ -1009,6 +1009,7 @@ static void single_port_configuration(device_t nb_dev, device_t dev) set_nbmisc_enable_bits(nb_dev, 0x7, 1 << 3, 1 << 3); } } else { /* step 13.b Link Training was successful */ + AtiPcieCfg.PortDetect |= 1 << 2; /* Port 2 */ set_pcie_enable_bits(dev, 0xA2, 0xFF, 0x1); reg32 = nbpcie_p_read_index(dev, 0x29); width = reg32 & 0xFF; @@ -1064,6 +1065,7 @@ static void dual_port_configuration(device_t nb_dev, device_t dev) set_nbmisc_enable_bits(nb_dev, 0x0c, 1 << dev_ind, 1 << dev_ind); } else { /* step 16.b Link Training was successful */ + AtiPcieCfg.PortDetect |= 1 << dev_ind; reg32 = nbpcie_p_read_index(dev, 0xa2); width = (reg32 >> 4) & 0x7; printk(BIOS_DEBUG, "GFX LC_LINK_WIDTH = 0x%x.\n", width); diff --git a/src/southbridge/amd/rs780/pcie.c b/src/southbridge/amd/rs780/pcie.c index 9cbd832661..5e2d985130 100644 --- a/src/southbridge/amd/rs780/pcie.c +++ b/src/southbridge/amd/rs780/pcie.c @@ -390,3 +390,16 @@ void config_gpp_core(device_t nb_dev, device_t sb_dev) switching_gpp_configurations(nb_dev, sb_dev); ValidatePortEn(nb_dev); } + +/** + * Hide unused Gpp port + */ +void pcie_hide_unused_ports(device_t nb_dev) +{ + u16 hide = 0x6FC; /* skip port 0, 1, 8 */ + + hide &= ~(AtiPcieCfg.PortDetect | AtiPcieCfg.PortHp); + printk(BIOS_INFO, "rs780 unused GPP ports bitmap=0x%03x, force disabled\n", hide); + set_nbmisc_enable_bits(nb_dev, 0x0C, 0xFC, (hide & 0xFC)); /* bridge 2-7 */ + set_nbmisc_enable_bits(nb_dev, 0x0C, 0x30000, ((hide >> 9) & 0x3) << 16); /* bridge 9-a */ +} diff --git a/src/southbridge/amd/rs780/rs780.c b/src/southbridge/amd/rs780/rs780.c index d8f1be3dbe..b8c7d04822 100644 --- a/src/southbridge/amd/rs780/rs780.c +++ b/src/southbridge/amd/rs780/rs780.c @@ -362,7 +362,10 @@ void rs780_enable(device_t dev) if (dev->enabled) rs780_gpp_sb_init(nb_dev, dev, dev_ind); - if (dev_ind == 10) disable_pcie_bar3(nb_dev); + if (dev_ind == 10) { + disable_pcie_bar3(nb_dev); + pcie_hide_unused_ports(nb_dev); + } break; default: printk(BIOS_DEBUG, "unknown dev: %s\n", dev_path(dev)); diff --git a/src/southbridge/amd/rs780/rs780.h b/src/southbridge/amd/rs780/rs780.h index aba3e6929b..5b8d251910 100644 --- a/src/southbridge/amd/rs780/rs780.h +++ b/src/southbridge/amd/rs780/rs780.h @@ -213,4 +213,5 @@ u32 extractbits(u32 source, int lsb, int msb); int cpuidFamily(void); int is_family0Fh(void); int is_family10h(void); +void pcie_hide_unused_ports(device_t nb_dev); #endif /* RS780_H */ |