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| author | Simon Glass <sjg@chromium.org> | 2015-01-14 21:37:04 -0700 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2015-01-23 17:24:54 -0700 |
| commit | 4a2708a097eacd7aa3d10ccf26a70a467fa69217 (patch) | |
| tree | c2e07f6db9d83dbb45d2054343eff5172c34ae8f /drivers/pci/pci_auto.c | |
| parent | 07570e709765e93f2b1e9506cfd8fa24455636b5 (diff) | |
| download | u-boot-imx-4a2708a097eacd7aa3d10ccf26a70a467fa69217.zip u-boot-imx-4a2708a097eacd7aa3d10ccf26a70a467fa69217.tar.gz u-boot-imx-4a2708a097eacd7aa3d10ccf26a70a467fa69217.tar.bz2 | |
x86: Access the VGA ROM when needed
Add code to the generic pci_rom file to access the VGA ROM in PCI space
when needed.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/pci/pci_auto.c')
| -rw-r--r-- | drivers/pci/pci_auto.c | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/drivers/pci/pci_auto.c b/drivers/pci/pci_auto.c index 44470fa..ed92857 100644 --- a/drivers/pci/pci_auto.c +++ b/drivers/pci/pci_auto.c @@ -11,7 +11,7 @@ */ #include <common.h> - +#include <errno.h> #include <pci.h> #undef DEBUG @@ -191,6 +191,32 @@ void pciauto_setup_device(struct pci_controller *hose, pci_hose_write_config_byte(hose, dev, PCI_LATENCY_TIMER, 0x80); } +int pciauto_setup_rom(struct pci_controller *hose, pci_dev_t dev) +{ + pci_addr_t bar_value; + pci_size_t bar_size; + u32 bar_response; + u16 cmdstat = 0; + + pci_hose_write_config_dword(hose, dev, PCI_ROM_ADDRESS, 0xfffffffe); + pci_hose_read_config_dword(hose, dev, PCI_ROM_ADDRESS, &bar_response); + if (!bar_response) + return -ENOENT; + + bar_size = -(bar_response & ~1); + DEBUGF("PCI Autoconfig: ROM, size=%#x, ", bar_size); + if (pciauto_region_allocate(hose->pci_mem, bar_size, &bar_value) == 0) { + pci_hose_write_config_dword(hose, dev, PCI_ROM_ADDRESS, + bar_value); + } + DEBUGF("\n"); + pci_hose_read_config_word(hose, dev, PCI_COMMAND, &cmdstat); + cmdstat |= PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER; + pci_hose_write_config_word(hose, dev, PCI_COMMAND, cmdstat); + + return 0; +} + void pciauto_prescan_setup_bridge(struct pci_controller *hose, pci_dev_t dev, int sub_bus) { |