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

2026-09-06 03:52:57 +08:00
commit b1928b41c0
21813 changed files with 4413081 additions and 0 deletions
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+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2018 NXP
+ */
+
+#include <config.h>
+#include <linux/linkage.h>
+
+#include <asm/armv7.h>
+#include <asm/psci.h>
+
+	.pushsection ._secure.text, "ax"
+
+	.arch_extension sec
+
+.globl v7_invalidate_l1
+v7_invalidate_l1:
+	mov	r0, #0
+	mcr	p15, 2, r0, c0, c0, 0
+	mrc	p15, 1, r0, c0, c0, 0
+
+	movw	r1, #0x7fff
+	and	r2, r1, r0, lsr #13
+
+	movw	r1, #0x3ff
+
+	and	r3, r1, r0, lsr #3      @ NumWays - 1
+	add	r2, r2, #1              @ NumSets
+
+	and	r0, r0, #0x7
+	add	r0, r0, #4      @ SetShift
+
+	clz	r1, r3          @ WayShift
+	add	r4, r3, #1      @ NumWays
+1:
+	sub	r2, r2, #1      @ NumSets--
+	mov	r3, r4          @ Temp = NumWays
+2:
+	subs	r3, r3, #1      @ Temp--
+	mov	r5, r3, lsl r1
+	mov	r6, r2, lsl r0
+	orr	r5, r5, r6      @ Reg = (Temp<<WayShift)|(NumSets<<SetShift)
+	mcr	p15, 0, r5, c7, c6, 2
+	bgt	2b
+	cmp	r2, #0
+	bgt	1b
+	dsb	st
+	isb
+	mov	pc, lr
+
+.globl psci_system_resume
+psci_system_resume:
+	mov	sp, r0
+
+	/* invalidate L1 I-cache first */
+	mov	r6, #0x0
+	mcr	p15, 0, r6, c7, c5, 0
+	mcr	p15, 0, r6, c7, c5, 6
+	/* enable the Icache and branch prediction */
+	mov	r6, #0x1800
+	mcr	p15, 0, r6, c1, c0, 0
+	isb
+
+	bl	v7_invalidate_l1
+	b	imx_system_resume
+
+	.popsection