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-rw-r--r--src/mainboard/google/volteer/Kconfig15
1 files changed, 15 insertions, 0 deletions
diff --git a/src/mainboard/google/volteer/Kconfig b/src/mainboard/google/volteer/Kconfig
index 9c7292f6d6..7ed685a8e5 100644
--- a/src/mainboard/google/volteer/Kconfig
+++ b/src/mainboard/google/volteer/Kconfig
@@ -19,6 +19,7 @@ config BOARD_GOOGLE_BASEBOARD_VOLTEER
select MAINBOARD_HAS_CHROMEOS
select MAINBOARD_HAS_SPI_TPM_CR50
select MAINBOARD_HAS_TPM2
+ select PCIEXP_HOTPLUG
select SOC_INTEL_TIGERLAKE
if BOARD_GOOGLE_BASEBOARD_VOLTEER
@@ -72,6 +73,20 @@ config MAX_CPUS
int
default 8
+# Reserving resources for PCIe Hotplug as per TGL BIOS Spec (doc #611569)
+# Revision 0.7.6 Section 7.2.5.1.5
+config PCIEXP_HOTPLUG_BUSES
+ int
+ default 42
+
+config PCIEXP_HOTPLUG_MEM
+ hex
+ default 0xc200000 # 194 MiB
+
+config PCIEXP_HOTPLUG_PREFETCH_MEM
+ hex
+ default 0x1c000000 # 448 MiB
+
config TPM_TIS_ACPI_INTERRUPT
int
default 21 # GPE0_DW0_21 (GPP_C21)