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// SPDX-License-Identifier: GPL-2.0-only
// SPDX-FileCopyrightText: 2015 Zodiac Inflight Innovation
/* Author: Andrey Smirnov <andrew.smirnov@gmail.com> */
#define pr_fmt(fmt) "nommu: " fmt
#include <common.h>
#include <dma-dir.h>
#include <init.h>
#include <mmu.h>
#include <errno.h>
#include <linux/sizes.h>
#include <asm/memory.h>
#include <asm/barebox-arm.h>
#include <asm/system.h>
#include <asm/cache.h>
#include <memory.h>
#include <asm/system_info.h>
#include <debug_ll.h>
#include <asm/sections.h>
#define __exceptions_size (__exceptions_stop - __exceptions_start)
static int nommu_v7_vectors_init(void)
{
void *vectors;
u32 cr;
if (cpu_architecture() < CPU_ARCH_ARMv7)
return 0;
/*
* High vectors cannot be re-mapped, so we have to use normal
* vectors
*/
cr = get_cr();
cr &= ~CR_V;
set_cr(cr);
arm_fixup_vectors();
vectors = xmemalign(PAGE_SIZE, PAGE_SIZE);
memset(vectors, 0, PAGE_SIZE);
memcpy(vectors, __exceptions_start, __exceptions_size);
set_vbar((unsigned int)vectors);
return 0;
}
mmu_initcall(nommu_v7_vectors_init);
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