From ab2cbf79b5d2508ccc81b64d23215e3abfd3987c Mon Sep 17 00:00:00 2001
From: Rex-BC Chen <rex-bc.chen@mediatek.com>
Date: Mon, 3 May 2021 20:44:09 +0800
Subject: soc/mediatek: Initialize SSPM

Load SSPM firmware and boot up SSPM in ramstage.
This adds 23ms to the boot time.

TEST=Load SSPM blob ok, and we can see some logs of SSPM from AP.

Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Change-Id: Ia227ea9f7d58129068cb36ec2de7d9feb677006b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55051
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
---
 src/soc/mediatek/mt8195/Kconfig      | 6 ++++++
 src/soc/mediatek/mt8195/Makefile.inc | 4 +++-
 src/soc/mediatek/mt8195/soc.c        | 2 ++
 3 files changed, 11 insertions(+), 1 deletion(-)

(limited to 'src/soc/mediatek/mt8195')

diff --git a/src/soc/mediatek/mt8195/Kconfig b/src/soc/mediatek/mt8195/Kconfig
index f9bf8466b6..02f7c5ab48 100644
--- a/src/soc/mediatek/mt8195/Kconfig
+++ b/src/soc/mediatek/mt8195/Kconfig
@@ -25,6 +25,12 @@ config MCUPM_FIRMWARE
 	help
 	  The file name of the MediaTek MCUPM firmware.
 
+config SSPM_FIRMWARE
+	string
+	default "sspm.bin"
+	help
+	  The file name of the MediaTek SSPM firmware.
+
 config FLASH_DUAL_READ
 	bool
 	default y
diff --git a/src/soc/mediatek/mt8195/Makefile.inc b/src/soc/mediatek/mt8195/Makefile.inc
index 1f89a587c5..ae325d59fc 100644
--- a/src/soc/mediatek/mt8195/Makefile.inc
+++ b/src/soc/mediatek/mt8195/Makefile.inc
@@ -54,6 +54,7 @@ ramstage-y += ../common/mmu_operations.c mmu_operations.c
 ramstage-y += ../common/mtcmos.c mtcmos.c
 ramstage-$(CONFIG_SPI_FLASH) += ../common/spi.c spi.c
 ramstage-y += soc.c
+ramstage-y += ../common/sspm.c
 ramstage-y += ../common/timer.c timer.c
 ramstage-y += ../common/uart.c
 ramstage-y += ../common/ufs.c
@@ -66,7 +67,8 @@ BL31_MAKEARGS += PLAT=mt8195
 MT8195_BLOB_DIR := 3rdparty/blobs/soc/mediatek/mt8195
 
 mcu-firmware-files := \
-	$(CONFIG_MCUPM_FIRMWARE)
+	$(CONFIG_MCUPM_FIRMWARE) \
+	$(CONFIG_SSPM_FIRMWARE)
 
 $(foreach fw, $(call strip_quotes,$(mcu-firmware-files)), \
 	  $(eval $(fw)-file := $(MT8195_BLOB_DIR)/$(fw)) \
diff --git a/src/soc/mediatek/mt8195/soc.c b/src/soc/mediatek/mt8195/soc.c
index 3ebf23d77f..f9f4f99f57 100644
--- a/src/soc/mediatek/mt8195/soc.c
+++ b/src/soc/mediatek/mt8195/soc.c
@@ -4,6 +4,7 @@
 #include <soc/emi.h>
 #include <soc/mcupm.h>
 #include <soc/mmu_operations.h>
+#include <soc/sspm.h>
 #include <soc/ufs.h>
 #include <symbols.h>
 
@@ -16,6 +17,7 @@ static void soc_init(struct device *dev)
 {
 	mtk_mmu_disable_l2c_sram();
 	mcupm_init();
+	sspm_init();
 	ufs_disable_refclk();
 }
 
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