diff options
| author | Angel Pons <th3fanbus@gmail.com> | 2021-01-20 13:31:09 +0100 |
|---|---|---|
| committer | Angel Pons <th3fanbus@gmail.com> | 2021-01-30 23:12:32 +0000 |
| commit | 1318ab475ddcae5fdd8f41b66c4d7034c8b3d396 (patch) | |
| tree | 7c55e861f5f04f058402f449975d7b4938d3e755 /src/northbridge/intel/pineview/memmap.c | |
| parent | b274ec73ab608384c925876d5a3bcf0396dcc3d5 (diff) | |
nb/intel/pineview: Define and use MMCONF_BUS_NUMBER
Note that bootblock.c originally wrote a reserved bit of the PCIEXBAR
register. The `length` bitfield was set to 0, so assume 256 busses.
Change-Id: Ie967747b4bf559b5aedc67cbcd35bca51f5a692e
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49760
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/northbridge/intel/pineview/memmap.c')
| -rw-r--r-- | src/northbridge/intel/pineview/memmap.c | 37 |
1 files changed, 0 insertions, 37 deletions
diff --git a/src/northbridge/intel/pineview/memmap.c b/src/northbridge/intel/pineview/memmap.c index bebe3a5b69..58342795b2 100644 --- a/src/northbridge/intel/pineview/memmap.c +++ b/src/northbridge/intel/pineview/memmap.c @@ -15,43 +15,6 @@ #include <cpu/intel/smm_reloc.h> #include <stdint.h> -int decode_pcie_bar(u32 *const base, u32 *const len) -{ - *base = 0; - *len = 0; - - const struct { - u16 num_buses; - u32 addr_mask; - } busmask[] = { - {256, 0xf0000000}, - {128, 0xf8000000}, - {64, 0xfc000000}, - {0, 0}, - }; - - const u32 pciexbar_reg = pci_read_config32(HOST_BRIDGE, PCIEXBAR); - - /* MMCFG not supported or not enabled */ - if (!(pciexbar_reg & (1 << 0))) { - printk(BIOS_WARNING, "WARNING: MMCONF not set\n"); - return 0; - } - - 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"); - return 0; - } - - *base = pciexbar; - *len = max_buses * MiB; - return 1; -} - /** Decodes used Graphics Mode Select (GMS) to kilobytes. */ u32 decode_igd_memory_size(const u32 gms) { |