diff options
| author | Angel Pons <th3fanbus@gmail.com> | 2020-08-03 15:53:20 +0200 |
|---|---|---|
| committer | Angel Pons <th3fanbus@gmail.com> | 2020-08-04 21:36:32 +0000 |
| commit | 8f917b1d4bb9a51fa08933c7c458fbfe5b896bb6 (patch) | |
| tree | 4ce2dbb6e35ec8e067d75e1d8654f9e6f9da352f /src/northbridge | |
| parent | ce3e6380b98c8e40292efa44bf6752cf34ee9af4 (diff) | |
nb/intel/x4x: Refactor `decode_pcie_bar`
Constify and eliminate local variables where possible to ease reading.
Tested with BUILD_TIMELESS=1, Asus P5QL PRO does not change.
Change-Id: I6d2937146a4764823cfc45c69a09f734b2525860
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44142
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Diffstat (limited to 'src/northbridge')
| -rw-r--r-- | src/northbridge/intel/x4x/memmap.c | 14 |
1 files changed, 5 insertions, 9 deletions
diff --git a/src/northbridge/intel/x4x/memmap.c b/src/northbridge/intel/x4x/memmap.c index 6d40fafc67..8a69ba80a8 100644 --- a/src/northbridge/intel/x4x/memmap.c +++ b/src/northbridge/intel/x4x/memmap.c @@ -61,11 +61,7 @@ int decode_pcie_bar(u32 *const base, u32 *const len) { *base = 0; *len = 0; - const pci_devfn_t dev = PCI_DEV(0, 0, 0); - u32 pciexbar = 0; - u32 pciexbar_reg; - u32 reg32; - int max_buses; + const struct { u16 num_buses; u32 addr_mask; @@ -76,16 +72,16 @@ int decode_pcie_bar(u32 *const base, u32 *const len) {0, 0}, }; - pciexbar_reg = pci_read_config32(dev, D0F0_PCIEXBAR_LO); + const u32 pciexbar_reg = pci_read_config32(PCI_DEV(0, 0, 0), D0F0_PCIEXBAR_LO); if (!(pciexbar_reg & 1)) { printk(BIOS_WARNING, "WARNING: MMCONF not set\n"); return 0; } - reg32 = (pciexbar_reg >> 1) & 3; - pciexbar = pciexbar_reg & busmask[reg32].addr_mask; - max_buses = busmask[reg32].num_buses; + const u32 index = (pciexbar_reg >> 1) & 3; + const u32 pciexbar = pciexbar_reg & busmask[index].addr_mask; + const int max_buses = busmask[index].num_buses; if (!pciexbar) { printk(BIOS_WARNING, "WARNING: pciexbar invalid\n"); |