GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/trusted-firmware/trusted-firmware-a-2.8/plat/amlogic/common/aml_sip_svc.c

@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2018-2019, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <common/debug.h>
+#include <common/runtime_svc.h>
+#include <lib/mmio.h>
+#include <platform_def.h>
+#include <stdint.h>
+#include <string.h>
+
+#include "aml_private.h"
+
+struct aml_cpu_info {
+	uint32_t version;
+	uint8_t chip_id[16];
+};
+
+static int aml_sip_get_chip_id(uint64_t version)
+{
+	struct aml_cpu_info *info = (void *)AML_SHARE_MEM_OUTPUT_BASE;
+	uint32_t size;
+
+	if (version > 2)
+		return -1;
+
+	memset(info, 0, sizeof(struct aml_cpu_info));
+
+	if (version == 2) {
+		info->version = 2;
+		size = 16;
+	} else {
+		info->version = 1;
+		size = 12;
+	}
+
+	if (aml_scpi_get_chip_id(info->chip_id, size) == 0)
+		return -1;
+
+	return 0;
+}
+
+/*******************************************************************************
+ * This function is responsible for handling all SiP calls
+ ******************************************************************************/
+static uintptr_t aml_sip_handler(uint32_t smc_fid,
+				  u_register_t x1, u_register_t x2,
+				  u_register_t x3, u_register_t x4,
+				  void *cookie, void *handle,
+				  u_register_t flags)
+{
+	switch (smc_fid) {
+
+	case AML_SM_GET_SHARE_MEM_INPUT_BASE:
+		SMC_RET1(handle, AML_SHARE_MEM_INPUT_BASE);
+
+	case AML_SM_GET_SHARE_MEM_OUTPUT_BASE:
+		SMC_RET1(handle, AML_SHARE_MEM_OUTPUT_BASE);
+
+	case AML_SM_EFUSE_READ:
+	{
+		void *dst = (void *)AML_SHARE_MEM_OUTPUT_BASE;
+		uint64_t ret = aml_efuse_read(dst, (uint32_t)x1, x2);
+
+		SMC_RET1(handle, ret);
+	}
+	case AML_SM_EFUSE_USER_MAX:
+		SMC_RET1(handle,  aml_efuse_user_max());
+
+	case AML_SM_JTAG_ON:
+		aml_scpi_jtag_set_state(AML_JTAG_STATE_ON, x1);
+		SMC_RET1(handle, 0);
+
+	case AML_SM_JTAG_OFF:
+		aml_scpi_jtag_set_state(AML_JTAG_STATE_OFF, x1);
+		SMC_RET1(handle, 0);
+
+	case AML_SM_GET_CHIP_ID:
+		SMC_RET1(handle, aml_sip_get_chip_id(x1));
+
+	default:
+		ERROR("BL31: Unhandled SIP SMC: 0x%08x\n", smc_fid);
+		break;
+	}
+
+	SMC_RET1(handle, SMC_UNK);
+}
+
+DECLARE_RT_SVC(
+	aml_sip_handler,
+
+	OEN_SIP_START,
+	OEN_SIP_END,
+	SMC_TYPE_FAST,
+	NULL,
+	aml_sip_handler
+);