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| author | Shamile Khan <shamile.khan@intel.com> | 2018-03-21 14:43:42 -0700 |
|---|---|---|
| committer | Furquan Shaikh <furquan@google.com> | 2018-03-23 01:23:20 +0000 |
| commit | 3d9462a07f0250cf628b7874620f9f682b7a020e (patch) | |
| tree | 955d4dd628b0ab3537d00f180b7cc50c6bdd1168 | |
| parent | 5b2a4b4087dd98c9c7e5e1dc4fc849fb44b7ed07 (diff) | |
| download | coreboot-3d9462a07f0250cf628b7874620f9f682b7a020e.tar.xz | |
soc/intel/apollolake: Bypass FSP's deassertion of PERST# signal.
BUG=b:76058338
BRANCH=None
TEST=Build coreboot for Octopus board.
Change-Id: I1858c7843d16b6b63fc30762a889916bbb9b781a
Signed-off-by: Shamile Khan <shamile.khan@intel.com>
Reviewed-on: https://review.coreboot.org/25311
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
| -rw-r--r-- | src/soc/intel/apollolake/romstage.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/soc/intel/apollolake/romstage.c b/src/soc/intel/apollolake/romstage.c index 1db2982214..a8a0dd1d44 100644 --- a/src/soc/intel/apollolake/romstage.c +++ b/src/soc/intel/apollolake/romstage.c @@ -304,6 +304,17 @@ static void soc_memory_init_params(FSPM_UPD *mupd) die("Can not find SoC devicetree\n"); m_cfg->PrmrrSize = config->PrmrrSize; + + /* FSP performs a PERST# signal deassertion for PCIe ports with + * the GPIO address specified in these UPDs. Over-ride the default + * addresses with 0 to bypass PERST# signal deassertion in FSP. + */ + m_cfg->RootPort0Perst = 0; + m_cfg->RootPort1Perst = 0; + m_cfg->RootPort2Perst = 0; + m_cfg->RootPort3Perst = 0; + m_cfg->RootPort4Perst = 0; + m_cfg->RootPort5Perst = 0; #endif } |