diff options
| author | Richard Smith <smithbone@gmail.com> | 2006-04-23 23:12:21 +0000 |
|---|---|---|
| committer | Richard Smith <smithbone@gmail.com> | 2006-04-23 23:12:21 +0000 |
| commit | 2a7352cb9dd7211c9a7edbef5145dd59df264644 (patch) | |
| tree | fd50995bb28ef91e18abfb3fa833f1eb2e07c1f8 | |
| parent | 2f1980026865af7b11f27257c36b61d897932186 (diff) | |
| download | coreboot-2a7352cb9dd7211c9a7edbef5145dd59df264644.tar.xz | |
Adds a CONFIG_MAX_PCI_BUSES to pci_locate_device()
Default is 255.
This allows mainboard configs for working across various groups
of boards that differ a device that may not loaded.
If you search for a device that is not loaded and max buses is 255
then there can be up to a 8 second delay to search the entire PCI space.
Board configs that know thier max bus can limit this search space.
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2273 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
| -rw-r--r-- | src/arch/i386/include/arch/romcc_io.h | 2 | ||||
| -rw-r--r-- | src/config/Options.lb | 5 | ||||
| -rw-r--r-- | src/mainboard/via/epia-m/Options.lb | 10 |
3 files changed, 16 insertions, 1 deletions
diff --git a/src/arch/i386/include/arch/romcc_io.h b/src/arch/i386/include/arch/romcc_io.h index adda3f8ef8..983835a093 100644 --- a/src/arch/i386/include/arch/romcc_io.h +++ b/src/arch/i386/include/arch/romcc_io.h @@ -168,7 +168,7 @@ static inline __attribute__((always_inline)) void pci_write_config32(device_t de #define PCI_DEV_INVALID (0xffffffffU) static device_t pci_locate_device(unsigned pci_id, device_t dev) { - for(; dev <= PCI_DEV(255, 31, 7); dev += PCI_DEV(0,0,1)) { + for(; dev <= PCI_DEV(CONFIG_MAX_PCI_BUSES, 31, 7); dev += PCI_DEV(0,0,1)) { unsigned int id; id = pci_read_config32(dev, 0); if (id == pci_id) { diff --git a/src/config/Options.lb b/src/config/Options.lb index 1342366fe9..2f3d8dd1c0 100644 --- a/src/config/Options.lb +++ b/src/config/Options.lb @@ -490,6 +490,11 @@ define CONFIG_SYS_CLK_FREQ export used comment "System clock frequency in MHz" end +define CONFIG_MAX_PCI_BUSES + default 255 + export always + comment "Maximum number of PCI buses to search for devices" +end ############################################### # SMP options ############################################### diff --git a/src/mainboard/via/epia-m/Options.lb b/src/mainboard/via/epia-m/Options.lb index 6c3193e78d..735d4421a0 100644 --- a/src/mainboard/via/epia-m/Options.lb +++ b/src/mainboard/via/epia-m/Options.lb @@ -38,6 +38,7 @@ uses CONFIG_CONSOLE_SERIAL8250 uses CONFIG_UDELAY_TSC uses CONFIG_PCI_ROM_RUN uses CONFIG_CONSOLE_VGA +uses CONFIG_MAX_PCI_BUSES ## ROM_SIZE is the size of boot ROM that this board will use. default ROM_SIZE = 256*1024 @@ -121,5 +122,14 @@ default CROSS_COMPILE="" default CC="$(CROSS_COMPILE)gcc -m32" default HOSTCC="gcc" +## +## Set this to the max PCI bus number you +## would ever use for PCI config IO. +## Setting this number very high will make +## pci_locate_device take a long time when +## it can't find a device. +## +default CONFIG_MAX_PCI_BUSES = 5 + end |