Add submodule dependency filesHEADmaster

Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec

1 files changed, 80 insertions, 0 deletions

diff --git a/roms/u-boot/arch/arm/lib/image.c b/roms/u-boot/arch/arm/lib/image.c
new file mode 100644
index 000000000..e394c1ad9
--- /dev/null
+++ b/roms/u-boot/arch/arm/lib/image.c
@@ -0,0 +1,80 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2000-2009
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ */
+
+#include <common.h>
+#include <image.h>
+#include <mapmem.h>
+#include <asm/global_data.h>
+#include <linux/bitops.h>
+#include <linux/sizes.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define LINUX_ARM64_IMAGE_MAGIC 0x644d5241
+
+/* See Documentation/arm64/booting.txt in the Linux kernel */
+struct Image_header {
+	uint32_t	code0;		/* Executable code */
+	uint32_t	code1;		/* Executable code */
+	uint64_t	text_offset;	/* Image load offset, LE */
+	uint64_t	image_size;	/* Effective Image size, LE */
+	uint64_t	flags;		/* Kernel flags, LE */
+	uint64_t	res2;		/* reserved */
+	uint64_t	res3;		/* reserved */
+	uint64_t	res4;		/* reserved */
+	uint32_t	magic;		/* Magic number */
+	uint32_t	res5;
+};
+
+int booti_setup(ulong image, ulong *relocated_addr, ulong *size,
+		bool force_reloc)
+{
+	struct Image_header *ih;
+	uint64_t dst;
+	uint64_t image_size, text_offset;
+
+	*relocated_addr = image;
+
+	ih = (struct Image_header *)map_sysmem(image, 0);
+
+	if (ih->magic != le32_to_cpu(LINUX_ARM64_IMAGE_MAGIC)) {
+		puts("Bad Linux ARM64 Image magic!\n");
+		return 1;
+	}
+
+	/*
+	 * Prior to Linux commit a2c1d73b94ed, the text_offset field
+	 * is of unknown endianness.  In these cases, the image_size
+	 * field is zero, and we can assume a fixed value of 0x80000.
+	 */
+	if (ih->image_size == 0) {
+		puts("Image lacks image_size field, assuming 16MiB\n");
+		image_size = 16 << 20;
+		text_offset = 0x80000;
+	} else {
+		image_size = le64_to_cpu(ih->image_size);
+		text_offset = le64_to_cpu(ih->text_offset);
+	}
+
+	*size = image_size;
+
+	/*
+	 * If bit 3 of the flags field is set, the 2MB aligned base of the
+	 * kernel image can be anywhere in physical memory, so respect
+	 * images->ep.  Otherwise, relocate the image to the base of RAM
+	 * since memory below it is not accessible via the linear mapping.
+	 */
+	if (!force_reloc && (le64_to_cpu(ih->flags) & BIT(3)))
+		dst = image - text_offset;
+	else
+		dst = gd->bd->bi_dram[0].start;
+
+	*relocated_addr = ALIGN(dst, SZ_2M) + text_offset;
+
+	unmap_sysmem(ih);
+
+	return 0;
+}