diff options
| author | Subrata Banik <subrata.banik@intel.com> | 2018-09-28 19:56:54 +0530 |
|---|---|---|
| committer | Duncan Laurie <dlaurie@chromium.org> | 2018-10-09 20:10:12 +0000 |
| commit | 819b143925bc060b09ccb39b9a9395fd09f1b014 (patch) | |
| tree | 8e97f053e12c8bd20f30e4ccffe8fbd6c8a6ff01 /src | |
| parent | 46caf09598575747070c599dbfd9abca9e96b831 (diff) | |
soc/intel/cannonlake: Ensure FSP don't override ITSS IPCx registers
This patch save and restore ITSS IPCx register before and after
FSP-S call.
Change-Id: Iea9356b4404d2fa49ea62ef7bc2c72f125054ff3
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/28792
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/soc/intel/cannonlake/chip.c | 9 | ||||
| -rw-r--r-- | src/soc/intel/cannonlake/include/soc/itss.h | 3 |
2 files changed, 12 insertions, 0 deletions
diff --git a/src/soc/intel/cannonlake/chip.c b/src/soc/intel/cannonlake/chip.c index 6a3324b7fd..0529c5ca8c 100644 --- a/src/soc/intel/cannonlake/chip.c +++ b/src/soc/intel/cannonlake/chip.c @@ -21,9 +21,11 @@ #include <fsp/util.h> #include <intelblocks/acpi.h> #include <intelblocks/chip.h> +#include <intelblocks/itss.h> #include <intelblocks/xdci.h> #include <romstage_handoff.h> #include <soc/intel/common/vbt.h> +#include <soc/itss.h> #include <soc/pci_devs.h> #include <soc/ramstage.h> #include <string.h> @@ -96,11 +98,18 @@ const char *soc_acpi_name(const struct device *dev) void soc_init_pre_device(void *chip_info) { + /* Snapshot the current GPIO IRQ polarities. FSP is setting a + * default policy that doesn't honor boards' requirements. */ + itss_snapshot_irq_polarities(GPIO_IRQ_START, GPIO_IRQ_END); + /* Perform silicon specific init. */ fsp_silicon_init(romstage_handoff_is_resume()); /* Display FIRMWARE_VERSION_INFO_HOB */ fsp_display_fvi_version_hob(); + + /* Restore GPIO IRQ polarities back to previous settings. */ + itss_restore_irq_polarities(GPIO_IRQ_START, GPIO_IRQ_END); } static void pci_domain_set_resources(struct device *dev) diff --git a/src/soc/intel/cannonlake/include/soc/itss.h b/src/soc/intel/cannonlake/include/soc/itss.h index 06dcc2e8d5..0d8b2ca3c0 100644 --- a/src/soc/intel/cannonlake/include/soc/itss.h +++ b/src/soc/intel/cannonlake/include/soc/itss.h @@ -16,6 +16,9 @@ #ifndef SOC_INTEL_CNL_ITSS_H #define SOC_INTEL_CNL_ITSS_H +#define GPIO_IRQ_START 50 +#define GPIO_IRQ_END ITSS_MAX_IRQ + #define ITSS_MAX_IRQ 119 #define IRQS_PER_IPC 32 #define NUM_IPC_REGS ((ITSS_MAX_IRQ + IRQS_PER_IPC - 1)/IRQS_PER_IPC) |