From 348b744b7c6528c0509e2a0b0740be3ce949497f Mon Sep 17 00:00:00 2001 From: Bin Meng Date: Thu, 20 Aug 2015 06:40:23 -0700 Subject: [PATCH] x86: fsp: Call fsp_init_phase_pci() in pci_uclass_post_probe() 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 after U-Boot is relocated and root bus has finished probing. Signed-off-by: Bin Meng Acked-by: Simon Glass --- drivers/pci/pci-uclass.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) 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 #include #include +#if defined(CONFIG_X86) && defined(CONFIG_HAVE_FSP) +#include +#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; } -- 2.30.2