45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
/*
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* This file is part of the Black Magic Debug project.
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*
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* Copyright (C) 2017 Black Sphere Technologies Ltd.
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* Written by Gordon Smith <gordonhj.smith@gmail.com>
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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 as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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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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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "libopencm3/stm32/flash.h"
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#include "stub.h"
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#define SR_ERROR_MASK 0xF2
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void __attribute__((naked))
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stm32f4_flash_write_x8_stub(uint32_t *dest, uint32_t *src, uint32_t size)
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{
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uint8_t *b_dest, *b_src;
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b_dest = (void *)dest;
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b_src = (void *)src;
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for (int i = 0; i < size; i += 1) {
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FLASH_CR = FLASH_CR_PROGRAM_X8 | FLASH_CR_PG;
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*b_dest++ = *b_src++;
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__asm("dsb");
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while (FLASH_SR & FLASH_SR_BSY)
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;
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}
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if (FLASH_SR & SR_ERROR_MASK)
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stub_exit(1);
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stub_exit(0);
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}
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