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

source/trusted-firmware/trusted-firmware-a-2.8/bl32/tsp/tsp_common.c

@@ -0,0 +1,156 @@
+/*
+ * Copyright (c) 2022, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <inttypes.h>
+#include <stdint.h>
+
+#include <arch_features.h>
+#include <arch_helpers.h>
+#include <bl32/tsp/tsp.h>
+#include <common/bl_common.h>
+#include <common/debug.h>
+#include <lib/spinlock.h>
+#include <plat/common/platform.h>
+#include <platform_tsp.h>
+#include "tsp_private.h"
+
+#include <platform_def.h>
+
+/*******************************************************************************
+ * Per cpu data structure to populate parameters for an SMC in C code and use
+ * a pointer to this structure in assembler code to populate x0-x7.
+ ******************************************************************************/
+static smc_args_t tsp_smc_args[PLATFORM_CORE_COUNT];
+
+/*******************************************************************************
+ * Per cpu data structure to keep track of TSP activity
+ ******************************************************************************/
+work_statistics_t tsp_stats[PLATFORM_CORE_COUNT];
+
+smc_args_t *set_smc_args(uint64_t arg0,
+			 uint64_t arg1,
+			 uint64_t arg2,
+			 uint64_t arg3,
+			 uint64_t arg4,
+			 uint64_t arg5,
+			 uint64_t arg6,
+			 uint64_t arg7)
+{
+	uint32_t linear_id;
+	smc_args_t *pcpu_smc_args;
+
+	/*
+	 * Return to Secure Monitor by raising an SMC. The results of the
+	 * service are passed as an arguments to the SMC.
+	 */
+	linear_id = plat_my_core_pos();
+	pcpu_smc_args = &tsp_smc_args[linear_id];
+	write_sp_arg(pcpu_smc_args, SMC_ARG0, arg0);
+	write_sp_arg(pcpu_smc_args, SMC_ARG1, arg1);
+	write_sp_arg(pcpu_smc_args, SMC_ARG2, arg2);
+	write_sp_arg(pcpu_smc_args, SMC_ARG3, arg3);
+	write_sp_arg(pcpu_smc_args, SMC_ARG4, arg4);
+	write_sp_arg(pcpu_smc_args, SMC_ARG5, arg5);
+	write_sp_arg(pcpu_smc_args, SMC_ARG6, arg6);
+	write_sp_arg(pcpu_smc_args, SMC_ARG7, arg7);
+
+	return pcpu_smc_args;
+}
+
+/*******************************************************************************
+ * Setup function for TSP.
+ ******************************************************************************/
+void tsp_setup(void)
+{
+	/* Perform early platform-specific setup. */
+	tsp_early_platform_setup();
+
+	/* Perform late platform-specific setup. */
+	tsp_plat_arch_setup();
+
+#if ENABLE_PAUTH
+	/*
+	 * Assert that the ARMv8.3-PAuth registers are present or an access
+	 * fault will be triggered when they are being saved or restored.
+	 */
+	assert(is_armv8_3_pauth_present());
+#endif /* ENABLE_PAUTH */
+}
+
+/*******************************************************************************
+ * This function performs any remaining bookkeeping in the test secure payload
+ * before the system is switched off (in response to a psci SYSTEM_OFF request).
+ ******************************************************************************/
+smc_args_t *tsp_system_off_main(uint64_t arg0,
+				uint64_t arg1,
+				uint64_t arg2,
+				uint64_t arg3,
+				uint64_t arg4,
+				uint64_t arg5,
+				uint64_t arg6,
+				uint64_t arg7)
+{
+	uint32_t linear_id = plat_my_core_pos();
+
+	/* Update this cpu's statistics. */
+	tsp_stats[linear_id].smc_count++;
+	tsp_stats[linear_id].eret_count++;
+
+	INFO("TSP: cpu 0x%lx SYSTEM_OFF request\n", read_mpidr());
+	INFO("TSP: cpu 0x%lx: %d smcs, %d erets requests\n", read_mpidr(),
+	     tsp_stats[linear_id].smc_count,
+	     tsp_stats[linear_id].eret_count);
+
+	/* Indicate to the SPD that we have completed this request. */
+	return set_smc_args(TSP_SYSTEM_OFF_DONE, 0, 0, 0, 0, 0, 0, 0);
+}
+
+/*******************************************************************************
+ * This function performs any remaining bookkeeping in the test secure payload
+ * before the system is reset (in response to a psci SYSTEM_RESET request).
+ ******************************************************************************/
+smc_args_t *tsp_system_reset_main(uint64_t arg0,
+				  uint64_t arg1,
+				  uint64_t arg2,
+				  uint64_t arg3,
+				  uint64_t arg4,
+				  uint64_t arg5,
+				  uint64_t arg6,
+				  uint64_t arg7)
+{
+	uint32_t linear_id = plat_my_core_pos();
+
+	/* Update this cpu's statistics. */
+	tsp_stats[linear_id].smc_count++;
+	tsp_stats[linear_id].eret_count++;
+
+	INFO("TSP: cpu 0x%lx SYSTEM_RESET request\n", read_mpidr());
+	INFO("TSP: cpu 0x%lx: %d smcs, %d erets requests\n", read_mpidr(),
+	     tsp_stats[linear_id].smc_count,
+	     tsp_stats[linear_id].eret_count);
+
+	/* Indicate to the SPD that we have completed this request. */
+	return set_smc_args(TSP_SYSTEM_RESET_DONE, 0, 0, 0, 0, 0, 0, 0);
+}
+
+/*******************************************************************************
+ * TSP smc abort handler. This function is called when aborting a preempted
+ * yielding SMC request. It should cleanup all resources owned by the SMC
+ * handler such as locks or dynamically allocated memory so following SMC
+ * request are executed in a clean environment.
+ ******************************************************************************/
+smc_args_t *tsp_abort_smc_handler(uint64_t func,
+				  uint64_t arg1,
+				  uint64_t arg2,
+				  uint64_t arg3,
+				  uint64_t arg4,
+				  uint64_t arg5,
+				  uint64_t arg6,
+				  uint64_t arg7)
+{
+	return set_smc_args(TSP_ABORT_DONE, 0, 0, 0, 0, 0, 0, 0);
+}