[coreboot-gerrit] Change in ...coreboot[master]: soc/intel/cannonlake: Fix afterg3 programming

[Lijian Zhao (Code Review)]

Lijian Zhao has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/30945

Change subject: soc/intel/cannonlake: Fix afterg3 programming
......................................................................

soc/intel/cannonlake: Fix afterg3 programming

According to EDS #565870 chapter 5.3.1, AG3E bit in PMC located in PMC
memory mapped register but not pci config spaces. Change the programming
to affect that difference.

BUG=b:122425492
TEST=Change System Power State after failure to "s5 off", and boot up
onto sarien platform, check the register with iotools mmio_read32
0xfe001020 and bit 0 is set.

Signed-off-by: Lijian Zhao 
Change-Id: I0934894558fd9cbc056dea8e7ac30426c2529e4e
---
M src/soc/intel/cannonlake/pmc.c
1 file changed, 3 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/45/30945/1

diff --git a/src/soc/intel/cannonlake/pmc.c b/src/soc/intel/cannonlake/pmc.c
index aebcfc9..74c877b 100644
--- a/src/soc/intel/cannonlake/pmc.c
+++ b/src/soc/intel/cannonlake/pmc.c
@@ -33,8 +33,9 @@
 static void pmc_set_afterg3(struct device *dev, int s5pwr)
 {
    uint8_t reg8;
+	uint8_t *pmcbase = pmc_mmio_regs();

-	reg8 = pci_read_config8(dev, GEN_PMCON_B);
+	reg8 = read8(pmcbase + GEN_PMCON_A);

switch (s5pwr) {
    case MAINBOARD_POWER_STATE_OFF:
@@ -48,7 +49,7 @@
    	break;
    }

-	pci_write_config8(dev, GEN_PMCON_B, reg8);
+	write8(pmcbase + GEN_PMCON_A, reg8);
 }

/*