diff options
| author | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2016-12-01 22:08:18 +0200 |
|---|---|---|
| committer | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2016-12-07 12:59:28 +0100 |
| commit | 6f66f414a0907f79abf492cd9eca839c0849c7f6 (patch) | |
| tree | 3e74145128261014798af58111db31d616fd43dd /src/soc/intel/skylake/bootblock | |
| parent | 891b6c4d199418a08ba88e42d6c8945ce05205f1 (diff) | |
PCI ops: MMCONF_SUPPORT_DEFAULT is required
Doing PCI config operations via MMIO window by default is a
requirement, if supported by the platform. This means chipset
or CPU code must enable MMCONF operations early in bootblock
already, or before platform-specific romstage entry.
Platforms are allowed to have NO_MMCONF_SUPPORT only in the
case it is actually not implemented in the silicon.
Change-Id: Id4d9029dec2fe195f09373320de800fcdf88c15d
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/17693
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'src/soc/intel/skylake/bootblock')
| -rw-r--r-- | src/soc/intel/skylake/bootblock/systemagent.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/soc/intel/skylake/bootblock/systemagent.c b/src/soc/intel/skylake/bootblock/systemagent.c index 608110e253..e76d4d25e9 100644 --- a/src/soc/intel/skylake/bootblock/systemagent.c +++ b/src/soc/intel/skylake/bootblock/systemagent.c @@ -26,12 +26,12 @@ void bootblock_systemagent_early_init(void) /* * The "io" variant of the config access is explicitly used to - * setup the PCIEXBAR because CONFIG_MMCONF_SUPPORT_DEFAULT is set to + * setup the PCIEXBAR because CONFIG_MMCONF_SUPPORT is set to * to true. That way all subsequent non-explicit config accesses use * MCFG. This code also assumes that bootblock_northbridge_init() is * the first thing called in the non-asm boot block code. The final * assumption is that no assembly code is using the - * CONFIG_MMCONF_SUPPORT_DEFAULT option to do PCI config acceses. + * CONFIG_MMCONF_SUPPORT option to do PCI config acceses. * * The PCIEXBAR is assumed to live in the memory mapped IO space under * 4GiB. |