1 files changed, 68 insertions, 0 deletions
diff --git a/plat/mediatek/mt8192/drivers/apusys/mtk_apusys.c b/plat/mediatek/mt8192/drivers/apusys/mtk_apusys.c
new file mode 100644
index 000000000..782aa5f9b
--- /dev/null
+++ b/plat/mediatek/mt8192/drivers/apusys/mtk_apusys.c
@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 2021, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <common/debug.h>
+#include <drivers/console.h>
+#include <lib/mmio.h>
+#include <mtk_apusys.h>
+#include <plat/common/platform.h>
+
+uint64_t apusys_kernel_ctrl(uint64_t x1, uint64_t x2, uint64_t x3, uint64_t x4,
+			    uint32_t *ret1)
+{
+	uint32_t request_ops;
+
+	request_ops = (uint32_t)x1;
+	INFO("[APUSYS] ops=0x%x\n", request_ops);
+
+	switch (request_ops) {
+	case MTK_SIP_APU_START_MCU:
+		/* setup addr[33:32] in reviser */
+		mmio_write_32(REVISER_SECUREFW_CTXT, 0U);
+		mmio_write_32(REVISER_USDRFW_CTXT, 0U);
+
+		/* setup secure sideband */
+		mmio_write_32(AO_SEC_FW,
+			      (SEC_FW_NON_SECURE << SEC_FW_SHIFT_NS) |
+			      (0U << SEC_FW_DOMAIN_SHIFT));
+
+		/* setup boot address */
+		mmio_write_32(AO_MD32_BOOT_CTRL, 0U);
+
+		/* setup pre-define region */
+		mmio_write_32(AO_MD32_PRE_DEFINE,
+			      (PRE_DEFINE_CACHE_TCM << PRE_DEFINE_SHIFT_0G) |
+			      (PRE_DEFINE_CACHE << PRE_DEFINE_SHIFT_1G) |
+			      (PRE_DEFINE_CACHE << PRE_DEFINE_SHIFT_2G) |
+			      (PRE_DEFINE_CACHE << PRE_DEFINE_SHIFT_3G));
+
+		/* release runstall */
+		mmio_write_32(AO_MD32_SYS_CTRL, SYS_CTRL_RUN);
+
+		INFO("[APUSYS] reviser_ctxt=%x,%x\n",
+		     mmio_read_32(REVISER_SECUREFW_CTXT),
+		     mmio_read_32(REVISER_USDRFW_CTXT));
+		INFO("[APUSYS]fw=0x%08x,boot=0x%08x,def=0x%08x,sys=0x%08x\n",
+		     mmio_read_32(AO_SEC_FW),
+		     mmio_read_32(AO_MD32_BOOT_CTRL),
+		     mmio_read_32(AO_MD32_PRE_DEFINE),
+		     mmio_read_32(AO_MD32_SYS_CTRL));
+		break;
+	case MTK_SIP_APU_STOP_MCU:
+		/* hold runstall */
+		mmio_write_32(AO_MD32_SYS_CTRL, SYS_CTRL_STALL);
+
+		INFO("[APUSYS] md32_boot_ctrl=0x%08x,runstall=0x%08x\n",
+		     mmio_read_32(AO_MD32_BOOT_CTRL),
+		     mmio_read_32(AO_MD32_SYS_CTRL));
+		break;
+	default:
+		ERROR("%s, unknown request_ops = %x\n", __func__, request_ops);
+		break;
+	}
+
+	return 0UL;
+}