diff options
Diffstat (limited to 'src/device/pci_early.c')
| -rw-r--r-- | src/device/pci_early.c | 33 |
1 files changed, 18 insertions, 15 deletions
diff --git a/src/device/pci_early.c b/src/device/pci_early.c index 6baebe0c28..4cf8c7e68c 100644 --- a/src/device/pci_early.c +++ b/src/device/pci_early.c @@ -20,7 +20,7 @@ #include <device/pci_def.h> #include <delay.h> -#ifdef __PRE_RAM__ +#if !ENV_RAMSTAGE unsigned pci_find_next_capability(pci_devfn_t dev, unsigned cap, unsigned last) { unsigned pos = 0; @@ -68,12 +68,11 @@ unsigned pci_find_capability(pci_devfn_t dev, unsigned cap) { return pci_find_next_capability(dev, cap, 0); } -#endif /* __PRE_RAM__ */ - +#endif #if IS_ENABLED(CONFIG_EARLY_PCI_BRIDGE) -static void pci_bridge_reset_secondary(device_t p2p_bridge) +static void pci_bridge_reset_secondary(pci_devfn_t p2p_bridge) { u16 reg16; @@ -90,7 +89,7 @@ static void pci_bridge_reset_secondary(device_t p2p_bridge) pci_write_config16(p2p_bridge, PCI_BRIDGE_CONTROL, reg16); } -static void pci_bridge_set_secondary(device_t p2p_bridge, u8 secondary) +static void pci_bridge_set_secondary(pci_devfn_t p2p_bridge, u8 secondary) { /* Disable config transaction forwarding. */ pci_write_config8(p2p_bridge, PCI_SECONDARY_BUS, 0x00); @@ -100,7 +99,7 @@ static void pci_bridge_set_secondary(device_t p2p_bridge, u8 secondary) pci_write_config8(p2p_bridge, PCI_SUBORDINATE_BUS, secondary); } -static void pci_bridge_set_mmio(device_t p2p_bridge, u32 base, u32 size) +static void pci_bridge_set_mmio(pci_devfn_t p2p_bridge, u32 base, u32 size) { u16 reg16; @@ -122,27 +121,20 @@ static void pci_bridge_set_mmio(device_t p2p_bridge, u32 base, u32 size) pci_write_config16(p2p_bridge, PCI_COMMAND, reg16); } -void pci_early_bridge_init(void) +void pci_early_mmio_window(pci_devfn_t p2p_bridge, u32 mmio_base, u32 mmio_size) { int timeout, ret = -1; - /* No PCI-to-PCI bridges are enabled yet, so the one we try to - * configure must have its primary on bus 0. - */ - pci_devfn_t p2p_bridge = PCI_DEV(0, CONFIG_EARLY_PCI_BRIDGE_DEVICE, - CONFIG_EARLY_PCI_BRIDGE_FUNCTION); - /* Secondary bus number is mostly irrelevant as we disable * configuration transactions right after the probe. */ u8 secondary = 15; u8 dev = 0; - u32 mmio_base = CONFIG_EARLY_PCI_MMIO_BASE; /* Enable configuration and MMIO over bridge. */ pci_bridge_reset_secondary(p2p_bridge); pci_bridge_set_secondary(p2p_bridge, secondary); - pci_bridge_set_mmio(p2p_bridge, mmio_base, 0x4000); + pci_bridge_set_mmio(p2p_bridge, mmio_base, mmio_size); for (timeout = 20000; timeout; timeout--) { u32 id = pci_read_config32(PCI_DEV(secondary, dev, 0), PCI_VENDOR_ID); @@ -164,4 +156,15 @@ void pci_early_bridge_init(void) */ pci_bridge_set_secondary(p2p_bridge, 0); } + +void pci_early_bridge_init(void) +{ + /* No PCI-to-PCI bridges are enabled yet, so the one we try to + * configure must have its primary on bus 0. + */ + pci_devfn_t p2p_bridge = PCI_DEV(0, CONFIG_EARLY_PCI_BRIDGE_DEVICE, + CONFIG_EARLY_PCI_BRIDGE_FUNCTION); + + pci_early_mmio_window(p2p_bridge, CONFIG_EARLY_PCI_MMIO_BASE, 0x4000); +} #endif /* CONFIG_EARLY_PCI_BRIDGE */ |