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2024-05-10 10ebd8556b7990499c896a550e3d416b444211e6

 kernel/arch/arm64/kernel/cpu-reset.S
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@@ -1,13 +1,10 @@
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+/* SPDX-License-Identifier: GPL-2.0-only */
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 /*
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  * CPU reset routines
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  *
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  * Copyright (C) 2001 Deep Blue Solutions Ltd.
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  * Copyright (C) 2012 ARM Ltd.
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  * Copyright (C) 2015 Huawei Futurewei Technologies.
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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  */
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 #include <linux/linkage.h>
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@@ -22,22 +19,23 @@
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  * __cpu_soft_restart(el2_switch, entry, arg0, arg1, arg2) - Helper for
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  * cpu_soft_restart.
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  *
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- * @el2_switch: Flag to indicate a swich to EL2 is needed.
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+ * @el2_switch: Flag to indicate a switch to EL2 is needed.
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  * @entry: Location to jump to for soft reset.
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- * arg0: First argument passed to @entry.
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- * arg1: Second argument passed to @entry.
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- * arg2: Third argument passed to @entry.
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+ * arg0: First argument passed to @entry. (relocation list)
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+ * arg1: Second argument passed to @entry.(physical kernel entry)
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+ * arg2: Third argument passed to @entry. (physical dtb address)
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  *
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  * Put the CPU into the same state as it would be if it had been reset, and
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  * branch to what would be the reset vector. It must be executed with the
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  * flat identity mapping.
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  */
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-ENTRY(__cpu_soft_restart)
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-	/* Clear sctlr_el1 flags. */
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-	mrs	x12, sctlr_el1
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-	ldr	x13, =SCTLR_ELx_FLAGS
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-	bic	x12, x12, x13
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+SYM_CODE_START(__cpu_soft_restart)
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+	mov_q	x12, INIT_SCTLR_EL1_MMU_OFF
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 	pre_disable_mmu_workaround
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+	/*
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+	 * either disable EL1&0 translation regime or disable EL2&0 translation
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+	 * regime if HCR_EL2.E2H == 1
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+	 */
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 	msr	sctlr_el1, x12
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 	isb
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@@ -50,6 +48,6 @@
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 	mov	x1, x3				// arg1
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 	mov	x2, x4				// arg2
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 	br	x8
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-ENDPROC(__cpu_soft_restart)
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+SYM_CODE_END(__cpu_soft_restart)
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 .popsection