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/rs780/pcie.c | |
| 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/rs780/pcie.c')
| -rw-r--r-- | src/southbridge/amd/rs780/pcie.c | 13 |
1 files changed, 13 insertions, 0 deletions
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 */ +} |