diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pci/pci-uclass.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/pci/pci-uclass.c b/drivers/pci/pci-uclass.c index 416027438f..c90e7ac8dd 100644 --- a/drivers/pci/pci-uclass.c +++ b/drivers/pci/pci-uclass.c @@ -14,6 +14,9 @@ #include <dm/lists.h> #include <dm/root.h> #include <dm/device-internal.h> +#if defined(CONFIG_X86) && defined(CONFIG_HAVE_FSP) +#include <asm/fsp/fsp_support.h> +#endif DECLARE_GLOBAL_DATA_PTR; @@ -749,6 +752,24 @@ static int pci_uclass_post_probe(struct udevice *bus) ret = pci_auto_config_devices(bus); #endif +#if defined(CONFIG_X86) && defined(CONFIG_HAVE_FSP) + /* + * Per Intel FSP specification, we should call FSP notify API to + * inform FSP that PCI enumeration has been done so that FSP will + * do any necessary initialization as required by the chipset's + * BIOS Writer's Guide (BWG). + * + * Unfortunately we have to put this call here as with driver model, + * the enumeration is all done on a lazy basis as needed, so until + * something is touched on PCI it won't happen. + * + * Note we only call this 1) after U-Boot is relocated, and 2) + * root bus has finished probing. + */ + if ((gd->flags & GD_FLG_RELOC) && (bus->seq == 0)) + ret = fsp_init_phase_pci(); +#endif + return ret < 0 ? ret : 0; } |