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-rw-r--r--src/soc/intel/skylake/chip_fsp20.c8
-rw-r--r--src/soc/intel/skylake/finalize.c13
2 files changed, 12 insertions, 9 deletions
diff --git a/src/soc/intel/skylake/chip_fsp20.c b/src/soc/intel/skylake/chip_fsp20.c
index 55fedd3cf5..c4f4e50cd2 100644
--- a/src/soc/intel/skylake/chip_fsp20.c
+++ b/src/soc/intel/skylake/chip_fsp20.c
@@ -28,6 +28,7 @@
#include <intelblocks/lpc_lib.h>
#include <intelblocks/mp_init.h>
#include <intelblocks/xdci.h>
+#include <intelblocks/p2sb.h>
#include <intelpch/lockdown.h>
#include <romstage_handoff.h>
#include <soc/acpi.h>
@@ -175,6 +176,13 @@ void soc_init_pre_device(void *chip_info)
/* Perform silicon specific init. */
fsp_silicon_init(romstage_handoff_is_resume());
+ /*
+ * Keep the P2SB device visible so it and the other devices are
+ * visible in coreboot for driver support and PCI resource allocation.
+ * There is no UPD setting for this.
+ */
+ p2sb_unhide();
+
/* Restore GPIO IRQ polarities back to previous settings. */
itss_restore_irq_polarities(GPIO_IRQ_START, GPIO_IRQ_END);
diff --git a/src/soc/intel/skylake/finalize.c b/src/soc/intel/skylake/finalize.c
index 0d6f7370a5..4cc9c8362b 100644
--- a/src/soc/intel/skylake/finalize.c
+++ b/src/soc/intel/skylake/finalize.c
@@ -46,14 +46,6 @@
#define PCR_PSFX_T0_SHDW_PCIEN 0x1C
#define PCR_PSFX_T0_SHDW_PCIEN_FUNDIS (1 << 8)
-static void disable_sideband_access(void)
-{
- p2sb_disable_sideband_access();
-
- /* hide p2sb device */
- p2sb_hide();
-}
-
static void pch_disable_heci(void)
{
/* unhide p2sb device */
@@ -63,7 +55,7 @@ static void pch_disable_heci(void)
pcr_or32(PID_PSF1, PSF_BASE_ADDRESS + PCR_PSFX_T0_SHDW_PCIEN,
PCR_PSFX_T0_SHDW_PCIEN_FUNDIS);
- disable_sideband_access();
+ p2sb_disable_sideband_access();
}
static void pch_finalize_script(struct device *dev)
@@ -113,6 +105,9 @@ static void pch_finalize_script(struct device *dev)
/* we should disable Heci1 based on the devicetree policy */
if (config->HeciEnabled == 0)
pch_disable_heci();
+
+ /* Hide p2sb device as the OS must not change BAR0. */
+ p2sb_hide();
}
static void soc_lockdown(struct device *dev)