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https://github.com/brain-hackers/u-boot-brain
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7f13b374fd
Add option to the booti_setup() which indicates to it that the caller requires the image to be relocated to the beginning of the RAM and that the information whether the image can be located anywhere in RAM at 2 MiB aligned boundary or not is to be ignored. This is useful ie. in case the Image is wrapped in another envelope, ie. fitImage and not relocating it but moving it would corrupt the envelope. Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Cc: Bin Chen <bin.chen@linaro.org> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Tom Rini <trini@konsulko.com> Reviewed-By: Bin Chen <bin.chen@linaro.org>
78 lines
2.0 KiB
C
78 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2000-2009
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*/
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#include <common.h>
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#include <mapmem.h>
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#include <linux/sizes.h>
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DECLARE_GLOBAL_DATA_PTR;
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#define LINUX_ARM64_IMAGE_MAGIC 0x644d5241
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/* See Documentation/arm64/booting.txt in the Linux kernel */
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struct Image_header {
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uint32_t code0; /* Executable code */
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uint32_t code1; /* Executable code */
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uint64_t text_offset; /* Image load offset, LE */
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uint64_t image_size; /* Effective Image size, LE */
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uint64_t flags; /* Kernel flags, LE */
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uint64_t res2; /* reserved */
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uint64_t res3; /* reserved */
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uint64_t res4; /* reserved */
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uint32_t magic; /* Magic number */
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uint32_t res5;
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};
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int booti_setup(ulong image, ulong *relocated_addr, ulong *size,
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bool force_reloc)
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{
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struct Image_header *ih;
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uint64_t dst;
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uint64_t image_size, text_offset;
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*relocated_addr = image;
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ih = (struct Image_header *)map_sysmem(image, 0);
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if (ih->magic != le32_to_cpu(LINUX_ARM64_IMAGE_MAGIC)) {
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puts("Bad Linux ARM64 Image magic!\n");
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return 1;
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}
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/*
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* Prior to Linux commit a2c1d73b94ed, the text_offset field
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* is of unknown endianness. In these cases, the image_size
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* field is zero, and we can assume a fixed value of 0x80000.
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*/
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if (ih->image_size == 0) {
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puts("Image lacks image_size field, assuming 16MiB\n");
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image_size = 16 << 20;
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text_offset = 0x80000;
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} else {
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image_size = le64_to_cpu(ih->image_size);
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text_offset = le64_to_cpu(ih->text_offset);
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}
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*size = image_size;
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/*
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* If bit 3 of the flags field is set, the 2MB aligned base of the
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* kernel image can be anywhere in physical memory, so respect
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* images->ep. Otherwise, relocate the image to the base of RAM
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* since memory below it is not accessible via the linear mapping.
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*/
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if (!force_reloc && (le64_to_cpu(ih->flags) & BIT(3)))
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dst = image - text_offset;
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else
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dst = gd->bd->bi_dram[0].start;
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*relocated_addr = ALIGN(dst, SZ_2M) + text_offset;
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unmap_sysmem(ih);
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return 0;
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}
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