intel/broadwell: Add option to enable/disable the PCIe AER capability
The Advanced Error Reporting capability was hardcoded in the PCIe
extended capability list, but it might not always be possible.
The Librem 13v1 does not seem to have working AER and this option
was needed and tested on the Librem 13v1. Without it, the linux
console gets spammed with AER errrors.
Change-Id: If2e0ec42c93f1fee927eacdf0099004cf9302fbe
Signed-off-by: Youness Alaoui <youness.alaoui@puri.sm>
Reviewed-on: https://review.coreboot.org/25326
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
diff --git a/src/soc/intel/broadwell/pcie.c b/src/soc/intel/broadwell/pcie.c
index db94859..724f263 100644
--- a/src/soc/intel/broadwell/pcie.c
+++ b/src/soc/intel/broadwell/pcie.c
@@ -555,8 +555,12 @@
pci_update_config8(dev, 0xf5, 0x0f, 0);
/* Set AER Extended Cap ID to 01h and Next Cap Pointer to 200h. */
- pci_update_config32(dev, 0x100, ~(1 << 29) & ~0xfffff,
- (1 << 29) | 0x10001);
+ if (IS_ENABLED(CONFIG_PCIEXP_AER))
+ pci_update_config32(dev, 0x100, ~(1 << 29) & ~0xfffff,
+ (1 << 29) | 0x10001);
+ else
+ pci_update_config32(dev, 0x100, ~(1 << 29) & ~0xfffff,
+ (1 << 29));
/* Set L1 Sub-State Cap ID to 1Eh and Next Cap Pointer to None. */
if (IS_ENABLED(CONFIG_PCIEXP_L1_SUB_STATE))