From be404c22aa8d9675d1b4b62fd188aee5aef01f88 Mon Sep 17 00:00:00 2001
From: "TingHan.Shen" <tinghan.shen@mediatek.com>
Date: Fri, 20 Nov 2020 14:42:23 +0800
Subject: soc/mediatek/mt8192: Init SSPM

SSPM is "Secure System Power Manager" that provides power control in
secure domain. The initialization flow is to load SSPM firmware to
its SRAM space and then enable.

Signed-off-by: TingHan.Shen <tinghan.shen@mediatek.com>
Change-Id: Ia834852af50e9e7e1b1222ed1e2be20e43139c62
Reviewed-on: https://review.coreboot.org/c/coreboot/+/47786
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
---
 src/soc/mediatek/mt8192/sspm.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 src/soc/mediatek/mt8192/sspm.c

(limited to 'src/soc/mediatek/mt8192/sspm.c')

diff --git a/src/soc/mediatek/mt8192/sspm.c b/src/soc/mediatek/mt8192/sspm.c
new file mode 100644
index 0000000000..b36e0df6f9
--- /dev/null
+++ b/src/soc/mediatek/mt8192/sspm.c
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <console/console.h>
+#include <device/mmio.h>
+#include <soc/mcu_common.h>
+#include <soc/sspm.h>
+#include <soc/symbols.h>
+
+static void reset_sspm(struct mtk_mcu *mcu)
+{
+	write32(&mt8192_sspm->sw_rstn, 0x1);
+}
+
+static struct mtk_mcu sspm = {
+	.firmware_name = CONFIG_SSPM_FIRMWARE,
+	.run_address = (void *)SSPM_SRAM_BASE,
+	.reset = reset_sspm,
+};
+
+void sspm_init(void)
+{
+	sspm.load_buffer = _dram_dma;
+	sspm.buffer_size = REGION_SIZE(dram_dma);
+
+	mtk_init_mcu(&sspm);
+}
-- 
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