81 lines
1.9 KiB
C
81 lines
1.9 KiB
C
/*
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* Copyright (c) 2010 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <common.h>
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#include <init.h>
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#include <sizes.h>
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#include <asm/system_info.h>
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#include <asm/barebox-arm.h>
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#include <asm/barebox-arm-head.h>
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#include <asm-generic/memory_layout.h>
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#include <asm/sections.h>
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#include <asm/pgtable.h>
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#include <asm/cache.h>
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/*
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* relocate binary to the currently running address
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*/
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void relocate_to_current_adr(void)
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{
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uint32_t offset;
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uint32_t *dstart, *dend, *dynsym, *dynend;
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/* Get offset between linked address and runtime address */
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offset = get_runtime_offset();
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dstart = (void *)(ld_var(__rel_dyn_start) - offset);
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dend = (void *)(ld_var(__rel_dyn_end) - offset);
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dynsym = (void *)(ld_var(__dynsym_start) - offset);
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dynend = (void *)(ld_var(__dynsym_end) - offset);
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while (dstart < dend) {
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uint32_t *fixup = (uint32_t *)(*dstart - offset);
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uint32_t type = *(dstart + 1);
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if ((type & 0xff) == 0x17) {
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*fixup = *fixup - offset;
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} else {
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int index = type >> 8;
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uint32_t r = dynsym[index * 4 + 1];
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*fixup = *fixup + r - offset;
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}
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*dstart -= offset;
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dstart += 2;
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}
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memset(dynsym, 0, (unsigned long)dynend - (unsigned long)dynsym);
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arm_early_mmu_cache_flush();
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flush_icache();
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}
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#ifdef ARM_MULTIARCH
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int __cpu_architecture;
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int __pure cpu_architecture(void)
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{
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if(__cpu_architecture == CPU_ARCH_UNKNOWN)
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__cpu_architecture = arm_early_get_cpu_architecture();
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return __cpu_architecture;
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}
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#endif
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