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Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
67 lines
1.4 KiB
C
67 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* (C) Copyright 2011
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* Graeme Russ, <graeme.russ@gmail.com>
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*/
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#ifndef _RELOCATE_H_
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#define _RELOCATE_H_
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#ifndef USE_HOSTCC
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#include <asm/global_data.h>
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DECLARE_GLOBAL_DATA_PTR;
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#endif
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/**
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* copy_uboot_to_ram() - Copy U-Boot to its new relocated position
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*
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* Return: 0 if OK, -ve on error
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*/
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int copy_uboot_to_ram(void);
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/**
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* clear_bss() - Clear the BSS (Blocked Start by Symbol) segment
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*
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* This clears the memory used by global variables
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*
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* Return: 0 if OK, -ve on error
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*/
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int clear_bss(void);
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/**
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* do_elf_reloc_fixups() - Fix up ELF relocations in the relocated code
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*
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* This processes the relocation tables to ensure that the code can run in its
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* new location.
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*
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* Return: 0 if OK, -ve on error
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*/
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int do_elf_reloc_fixups(void);
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/**
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* manual_reloc() - Manually relocate a pointer if needed
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*
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* This is a nop in almost all cases, except for the systems with a broken gcc
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* which need to manually relocate some things.
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*
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* @ptr: Pointer to relocate
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* Return: new pointer value
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*/
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static inline void *manual_reloc(void *ptr)
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{
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#ifndef USE_HOSTCC
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if (IS_ENABLED(CONFIG_NEEDS_MANUAL_RELOC))
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return ptr + gd->reloc_off;
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#endif
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return ptr;
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}
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#if !defined(USE_HOSTCC) && defined(CONFIG_NEEDS_MANUAL_RELOC)
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#define MANUAL_RELOC(ptr) (ptr) = manual_reloc(ptr)
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#else
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#define MANUAL_RELOC(ptr) (void)(ptr)
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#endif
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#endif /* _RELOCATE_H_ */
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