diff options
| author | Patrick Rudolph <siro@das-labor.org> | 2017-05-14 12:40:50 +0200 |
|---|---|---|
| committer | Patrick Rudolph <siro@das-labor.org> | 2017-05-19 09:51:58 +0200 |
| commit | ecd4be8114c828b3295ee16be82db70f9fcb97a9 (patch) | |
| tree | 55734cd883deb33a2b0fc71e58f9c6e8ee0263ef /src | |
| parent | 53d6d84c3ff33973ca82ed0241cb5967dfc92991 (diff) | |
nb/intel/sandybridge: Hide additional nb devices
Hide device 4 and device 7 if disabled.
Allows devicetree settings to take effect.
Tested on Lenovo T430.
Change-Id: I64a19e2bbdb1640e1d732f6e4486f73cbb0bda81
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/19689
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Diffstat (limited to 'src')
| -rw-r--r-- | src/northbridge/intel/sandybridge/northbridge.c | 10 | ||||
| -rw-r--r-- | src/northbridge/intel/sandybridge/sandybridge.h | 2 |
2 files changed, 12 insertions, 0 deletions
diff --git a/src/northbridge/intel/sandybridge/northbridge.c b/src/northbridge/intel/sandybridge/northbridge.c index 562e7f2efc..5c5f41ad4a 100644 --- a/src/northbridge/intel/sandybridge/northbridge.c +++ b/src/northbridge/intel/sandybridge/northbridge.c @@ -357,11 +357,21 @@ static void disable_peg(void) printk(BIOS_DEBUG, "Disabling IGD.\n"); reg &= ~DEVEN_IGD; } + dev = dev_find_slot(0, PCI_DEVFN(4, 0)); + if (!dev || !dev->enabled) { + printk(BIOS_DEBUG, "Disabling Device 4.\n"); + reg &= ~DEVEN_D4EN; + } dev = dev_find_slot(0, PCI_DEVFN(6, 0)); if (!dev || !dev->enabled) { printk(BIOS_DEBUG, "Disabling PEG60.\n"); reg &= ~DEVEN_PEG60; } + dev = dev_find_slot(0, PCI_DEVFN(7, 0)); + if (!dev || !dev->enabled) { + printk(BIOS_DEBUG, "Disabling Device 7.\n"); + reg &= ~DEVEN_D7EN; + } dev = dev_find_slot(0, PCI_DEVFN(0, 0)); pci_write_config32(dev, DEVEN, reg); diff --git a/src/northbridge/intel/sandybridge/sandybridge.h b/src/northbridge/intel/sandybridge/sandybridge.h index 8d2ae852e5..bc659be075 100644 --- a/src/northbridge/intel/sandybridge/sandybridge.h +++ b/src/northbridge/intel/sandybridge/sandybridge.h @@ -75,7 +75,9 @@ #define GGC 0x50 /* GMCH Graphics Control */ #define DEVEN 0x54 /* Device Enable */ +#define DEVEN_D7EN (1 << 14) #define DEVEN_PEG60 (1 << 13) +#define DEVEN_D4EN (1 << 7) #define DEVEN_IGD (1 << 4) #define DEVEN_PEG10 (1 << 3) #define DEVEN_PEG11 (1 << 2) |