soc/intel/common/block/cpu: Add option to skip coreboot AP init

SoC users from IOTG team is looking forward for a solution to skip
coreboot AP initialization flow and make use of FSPS-UPD to
perform AP reset.

TEST=Assign use_fsp_mp_init=1 to ensure coreboot is not bringing APs
out of reset.

Change-Id: Ibc8cd411e802fb682436a933073922b2693ba994
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/26644
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/src/soc/intel/common/block/include/intelblocks/chip.h b/src/soc/intel/common/block/include/intelblocks/chip.h
index 555bdaa893..d761f6be76 100644
--- a/src/soc/intel/common/block/include/intelblocks/chip.h
+++ b/src/soc/intel/common/block/include/intelblocks/chip.h
@@ -33,9 +33,24 @@ struct soc_intel_common_config {
 	int chipset_lockdown;
 	struct gspi_cfg gspi[CONFIG_SOC_INTEL_COMMON_BLOCK_GSPI_MAX];
 	struct dw_i2c_bus_config i2c[CONFIG_SOC_INTEL_I2C_DEV_MAX];
+	/*
+	 * Option for mainboard to skip coreboot MP initialization
+	 * 0 = Make use of coreboot MP Init
+	 * 1 = Make use of FSP MP Init
+	 */
+	uint8_t use_fsp_mp_init;
 };
 
 /* This function to retrieve soc config structure required by common code */
 const struct soc_intel_common_config *chip_get_common_soc_structure(void);
 
+/*
+ * This function will get MP Init config
+ *
+ * Return values:
+ * 0 = Make use of coreboot MP Init
+ * 1 = Make use of FSP MP Init
+ */
+int chip_get_fsp_mp_init(void);
+
 #endif /* SOC_INTEL_COMMON_BLOCK_CHIP_H */