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

2026-09-06 03:52:57 +08:00
commit b1928b41c0
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+/*
+ * Copyright (c) 2017-2021, Arm Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <platform_def.h>
+
+#include <arch.h>
+#include <asm_macros.S>
+#include <common/bl_common.h>
+#include <el3_common_macros.S>
+
+	.globl	bl2_entrypoint
+
+#if BL2_IN_XIP_MEM
+#define FIXUP_SIZE	0
+#else
+#define FIXUP_SIZE	((BL2_LIMIT) - (BL2_BASE))
+#endif
+
+func bl2_entrypoint
+	/* Save arguments x0-x3 from previous Boot loader */
+	mov	x20, x0
+	mov	x21, x1
+	mov	x22, x2
+	mov	x23, x3
+
+	el3_entrypoint_common                                   \
+		_init_sctlr=1                                   \
+		_warm_boot_mailbox=!PROGRAMMABLE_RESET_ADDRESS  \
+		_secondary_cold_boot=!COLD_BOOT_SINGLE_CPU      \
+		_init_memory=1                                  \
+		_init_c_runtime=1                               \
+		_exception_vectors=bl2_el3_exceptions		\
+		_pie_fixup_size=FIXUP_SIZE
+
+	/* ---------------------------------------------
+	 * Restore parameters of boot rom
+	 * ---------------------------------------------
+	 */
+	mov	x0, x20
+	mov	x1, x21
+	mov	x2, x22
+	mov	x3, x23
+
+	/* ---------------------------------------------
+	 * Perform BL2 setup
+	 * ---------------------------------------------
+	 */
+	bl	bl2_el3_setup
+
+#if ENABLE_PAUTH
+	/* ---------------------------------------------
+	 * Program APIAKey_EL1 and enable pointer authentication.
+	 * ---------------------------------------------
+	 */
+	bl	pauth_init_enable_el3
+#endif /* ENABLE_PAUTH */
+
+	/* ---------------------------------------------
+	 * Jump to main function.
+	 * ---------------------------------------------
+	 */
+	bl	bl2_main
+
+	/* ---------------------------------------------
+	 * Should never reach this point.
+	 * ---------------------------------------------
+	 */
+	no_ret	plat_panic_handler
+endfunc bl2_entrypoint