soc/intel/cannonlake: Program DMI PCR settings
According to CNL PCH BIOS spec (570374) 2.4.1, DMI cycle decoding needs
to be programmed before it gets locked. Update lpc programming to add
decode programming on DMI side as well. Also enabled io port 0x200
decoding by default.
BUG=b.70765863
TEST=Apply changes and add chromeos EC decoding in mainboard
devicetree.cb, then read back IO port in depthcharge cli and check
that return is not zero.
Change-Id: I6b8f393c92cbd0632fed86212ae384ff53c9f8c3
Signed-off-by: Lijian Zhao <lijian.zhao@intel.com>
Reviewed-on: https://review.coreboot.org/22970
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
diff --git a/src/soc/intel/cannonlake/bootblock/pch.c b/src/soc/intel/cannonlake/bootblock/pch.c
index 47eaceb..ae413d5 100644
--- a/src/soc/intel/cannonlake/bootblock/pch.c
+++ b/src/soc/intel/cannonlake/bootblock/pch.c
@@ -39,11 +39,6 @@
#define PCR_PSFX_TO_SHDW_PCIEN_IOEN 0x01
#define PCR_PSFX_T0_SHDW_PCIEN 0x1C
-#define PCR_DMI_LPCLGIR1 0x2730
-#define PCR_DMI_LPCLGIR2 0x2734
-#define PCR_DMI_LPCLGIR3 0x2738
-#define PCR_DMI_LPCLGIR4 0x273c
-
#define PCR_DMI_ACPIBA 0x27B4
#define PCR_DMI_ACPIBDID 0x27B8
#define PCR_DMI_PMBASEA 0x27AC
@@ -176,7 +171,7 @@
}
/* IO Decode Enable */
- dec_en |= SE_LPC_EN | KBC_LPC_EN | MC1_LPC_EN;
+ dec_en |= SE_LPC_EN | KBC_LPC_EN | MC1_LPC_EN | GAMEL_LPC_EN;
pci_write_config16(PCH_DEV_LPC, LPC_EN, dec_en);
pcr_write16(PID_DMI, PCR_DMI_LPCIOE, dec_en);
}