diff options
| author | Rizwan Qureshi <rizwan.qureshi@intel.com> | 2017-02-10 15:58:24 +0530 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2017-03-22 17:43:47 +0100 |
| commit | ffe58107df667b5142e3c3efd25c1ee3360038bf (patch) | |
| tree | 9bd3c7ec4b2bade0ef4f8ad25ea71fa91ab90e93 | |
| parent | 63755128961089deba77413dad1f4f6d349a68f5 (diff) | |
soc/intel/skylake: Add option to disable host reads to PMC XRAM
FSP disables host access to shadowed PMC XRAM registers by default,
it also provides a UPD to enable/disable host reads to these regiters.
Expose the same in devicetree as a config option.
Change-Id: Iaa33aa3233bda4f050da37d1d8af0556311c9496
Signed-off-by: Rizwan Qureshi <rizwan.qureshi@intel.com>
Reviewed-on: https://review.coreboot.org/18319
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
| -rw-r--r-- | src/soc/intel/skylake/chip.h | 3 | ||||
| -rw-r--r-- | src/soc/intel/skylake/chip_fsp20.c | 3 |
2 files changed, 6 insertions, 0 deletions
diff --git a/src/soc/intel/skylake/chip.h b/src/soc/intel/skylake/chip.h index 445dcb67c1..fbd10a918c 100644 --- a/src/soc/intel/skylake/chip.h +++ b/src/soc/intel/skylake/chip.h @@ -402,6 +402,9 @@ struct soc_intel_skylake_config { */ u32 PrmrrSize; + /* Enable/Disable host reads to PMC XRAM registers */ + u8 PchPmPmcReadDisable; + /* Statically clock gate 8254 PIT. */ u8 clock_gate_8254; diff --git a/src/soc/intel/skylake/chip_fsp20.c b/src/soc/intel/skylake/chip_fsp20.c index 851c957624..2d9b864629 100644 --- a/src/soc/intel/skylake/chip_fsp20.c +++ b/src/soc/intel/skylake/chip_fsp20.c @@ -258,6 +258,9 @@ void platform_fsp_silicon_init_params_cb(FSPS_UPD *supd) params->FastPkgCRampDisableGt = config->FastPkgCRampDisableGt; params->FastPkgCRampDisableSa = config->FastPkgCRampDisableSa; + /* Enable PMC XRAM read */ + tconfig->PchPmPmcReadDisable = config->PchPmPmcReadDisable; + soc_irq_settings(params); } |