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

source/bootloader/u-boot-2020.01/arch/arm/mach-uniphier/arm64/Makefile

@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0+
+
+obj-y += mem_map.o
+obj-$(CONFIG_ARCH_UNIPHIER_LD20) += lowlevel_init.o

source/bootloader/u-boot-2020.01/arch/arm/mach-uniphier/arm64/lowlevel_init.S

@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2017 Socionext Inc.
+ */
+
+#include <linux/linkage.h>
+
+ENTRY(lowlevel_init)
+	/* LD20 needs the following code to boot.  I do not know why. */
+	mrs	x0, sctlr_el1
+	msr	sctlr_el1, x0
+	ret
+ENDPROC(lowlevel_init)

source/bootloader/u-boot-2020.01/arch/arm/mach-uniphier/arm64/mem_map.c

@@ -0,0 +1,39 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2016 Masahiro Yamada <yamada.masahiro@socionext.com>
+ */
+
+#include <common.h>
+#include <linux/types.h>
+#include <asm/armv8/mmu.h>
+
+#include "../init.h"
+
+static struct mm_region uniphier_mem_map[] = {
+	{
+		.virt = 0x00000000,
+		.phys = 0x00000000,
+		.size = 0x80000000,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+			 PTE_BLOCK_NON_SHARE |
+			 PTE_BLOCK_PXN | PTE_BLOCK_UXN
+	},
+	{
+		.virt = 0x80000000,
+		.phys = 0x80000000,
+		.size = 0xc0000000,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
+			 PTE_BLOCK_INNER_SHARE
+	},
+	{ /* sentinel */ }
+};
+
+struct mm_region *mem_map = uniphier_mem_map;
+
+void uniphier_mem_map_init(unsigned long dram_base, unsigned long dram_size)
+{
+	uniphier_mem_map[0].size = dram_base;
+	uniphier_mem_map[1].virt = dram_base;
+	uniphier_mem_map[1].phys = dram_base;
+	uniphier_mem_map[1].size = dram_size;
+}