50 lines
1.6 KiB
C
50 lines
1.6 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) 2015 Black Sphere Technologies Ltd.
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* Written by Gareth McMullin <gareth@blacksphere.co.nz>
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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 <stdint.h>
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#include "stub.h"
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#define LMI_FLASH_BASE ((volatile uint32_t *)0x400FD000)
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#define LMI_FLASH_FMA LMI_FLASH_BASE[0]
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#define LMI_FLASH_FMD LMI_FLASH_BASE[1]
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#define LMI_FLASH_FMC LMI_FLASH_BASE[2]
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#define LMI_FLASH_FMC_WRITE (1 << 0)
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#define LMI_FLASH_FMC_ERASE (1 << 1)
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#define LMI_FLASH_FMC_MERASE (1 << 2)
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#define LMI_FLASH_FMC_COMT (1 << 3)
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#define LMI_FLASH_FMC_WRKEY 0xA4420000
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void __attribute__((naked))
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stm32f1_flash_write_stub(uint32_t *dest, uint32_t *src, uint32_t size)
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{
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size /= 4;
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for (int i; i < size; i++) {
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LMI_FLASH_FMA = (uint32_t)&dest[i];
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LMI_FLASH_FMD = src[i];
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LMI_FLASH_FMC = LMI_FLASH_FMC_WRKEY | LMI_FLASH_FMC_WRITE;
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while (LMI_FLASH_FMC & LMI_FLASH_FMC_WRITE)
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;
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}
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stub_exit(0);
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}
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