mirror of
https://github.com/u-boot/u-boot.git
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fd58c275f6
commitddf67daac3("efi_capsule: Move signature from DTB to .rodata") was reverted in commit47a25e81d3("Revert "efi_capsule: Move signature from DTB to .rodata"") because that's what U-Boot was usually doing -- using the DT to store configuration and data. Some of the discussions can be found here [0]. (Ab)using the device tree to store random data isn't ideal though. On top of that with new features introduced over the years, keeping the certificates in the DT has proven to be problematic. One of the reasons is that platforms might send U-Boot a DTB from the previous stage loader using a transfer list which won't contain the signatures since other loaders are not aware of internal U-Boot ABIs. On top of that QEMU creates the DTB on the fly, so adding the capsule certificate there does not work and requires users to dump it and re-create it injecting the public keys. Now that we have proper memory permissions for arm64, move the certificate to .rodata and read it from there. [0] https://lore.kernel.org/u-boot/CAPnjgZ2uM=n8Qo-a=DUkx5VW5Bzp5Xy8=Wgmrw8ESqUBK00YJQ@mail.gmail.com/ Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org> Tested-by: Jonathan Humphreys <j-humphreys@ti.com> # on TI sk-am62p-lp Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on AML-A311D-CC Tested-by: Raymond Mao <raymond.mao@linaro.org>
100 lines
2.6 KiB
C
100 lines
2.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (c) 2011 The Chromium OS Authors.
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*/
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/* Taken from Linux kernel, commit f56c3196 */
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#ifndef _ASM_GENERIC_SECTIONS_H_
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#define _ASM_GENERIC_SECTIONS_H_
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#include <linux/types.h>
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/* References to section boundaries */
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extern char _text[], _stext[], _etext[];
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extern char _data[], _sdata[], _edata[];
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extern char __bss_start[], __bss_stop[];
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extern char __init_begin[], __init_end[];
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extern char _sinittext[], _einittext[];
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extern char _end[], _init[];
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extern char __per_cpu_load[], __per_cpu_start[], __per_cpu_end[];
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extern char __kprobes_text_start[], __kprobes_text_end[];
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extern char __entry_text_start[], __entry_text_end[];
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extern char __initdata_begin[], __initdata_end[];
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extern char __start_rodata[], __end_rodata[];
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extern char __start_data[], __end_data[];
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extern char __efi_helloworld_begin[];
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extern char __efi_helloworld_end[];
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extern char __efi_var_file_begin[];
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extern char __efi_var_file_end[];
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extern char __efi_capsule_sig_begin[];
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extern char __efi_capsule_sig_end[];
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/* Private data used by of-platdata devices/uclasses */
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extern char __priv_data_start[], __priv_data_end[];
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/* Start and end of .ctors section - used for constructor calls. */
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extern char __ctors_start[], __ctors_end[];
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extern char __efi_runtime_rel_start[], __efi_runtime_rel_stop[];
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extern char __efi_runtime_start[], __efi_runtime_stop[];
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/* function descriptor handling (if any). Override
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* in asm/sections.h */
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#ifndef dereference_function_descriptor
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#define dereference_function_descriptor(p) (p)
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#endif
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/* random extra sections (if any). Override
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* in asm/sections.h */
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#ifndef arch_is_kernel_text
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static inline int arch_is_kernel_text(unsigned long addr)
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{
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return 0;
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}
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#endif
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#ifndef arch_is_kernel_data
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static inline int arch_is_kernel_data(unsigned long addr)
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{
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return 0;
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}
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#endif
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/* U-Boot-specific things begin here */
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/* Start of U-Boot text region */
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extern char __text_start[];
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extern char __text_end[];
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/* This marks the text region which must be relocated */
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extern char __image_copy_start[], __image_copy_end[];
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/* This marks the rcode region used for SPL relocation */
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extern char _rcode_start[], _rcode_end[];
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extern char __bss_end[];
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extern char __rel_dyn_start[], __rel_dyn_end[];
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extern char _image_binary_end[];
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/*
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* This is the U-Boot entry point - prior to relocation it should be same
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* as __text_start
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*/
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extern void _start(void);
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#ifndef USE_HOSTCC
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#if CONFIG_IS_ENABLED(RELOC_LOADER)
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#define __rcode __section(".text.rcode")
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#define __rdata __section(".text.rdata")
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#else
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#define __rcode
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#define __rdata
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#endif
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#else
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#define __rcode
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#define __rdata
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#endif
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#endif /* _ASM_GENERIC_SECTIONS_H_ */
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