soc/mediatek/mt8192: Load MCUPM firmware and boot up MCUPM

MCUPM is the MediaTek proprietary firmware for MCU power management.

TEST=1. emerge-asurada coreboot chromeos-bootimage;
     2. See following log during booting.
        load_blob_file: Load mcupm.bin in 35 msecs, size 115668 bytes
     3. Test suspend/resume by:
        a. suspend (on DUT): powerd_dbus_suspend
        b. resume (on host): dut-control power_state:on

Change-Id: I50bea1942507b4a40df9730b4e1bf98980d74277
Signed-off-by: Yidi Lin <yidi.lin@mediatek.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46392
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 33 insertions, 0 deletions

diff --git a/src/soc/mediatek/mt8192/mcupm.c b/src/soc/mediatek/mt8192/mcupm.c
new file mode 100644
index 0000000000..70981a05ec
--- /dev/null
+++ b/src/soc/mediatek/mt8192/mcupm.c
@@ -0,0 +1,33 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <console/console.h>
+#include <device/mmio.h>
+#include <soc/mcu_common.h>
+#include <soc/mcupm.h>
+#include <soc/symbols.h>
+
+#define ABNORMALBOOT_REG	0x0C55FAA0
+
+static void reset_mcupm(struct mtk_mcu *mcu)
+{
+	/* Clear abnormal boot register */
+	write32((void *)ABNORMALBOOT_REG, 0x0);
+	write32(&mt8192_mcupm->sw_rstn, 0x1);
+}
+
+static struct mtk_mcu mcupm = {
+	.firmware_name = CONFIG_MCUPM_FIRMWARE,
+	.run_address = (void *)MCUPM_SRAM_BASE,
+	.reset = reset_mcupm,
+};
+
+void mcupm_init(void)
+{
+	mcupm.load_buffer = _dram_dma;
+	mcupm.buffer_size = REGION_SIZE(dram_dma);
+
+	write32(&mt8192_mcupm->sw_rstn, 0x0);
+
+	if (mtk_init_mcu(&mcupm))
+		die("%s() failed\n", __func__);
+}