111 lines
2.9 KiB
C
111 lines
2.9 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) 2013 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 "general.h"
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#include "usbdfu.h"
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#include <libopencm3/stm32/flash.h>
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#include <libopencm3/cm3/scb.h>
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static uint32_t sector_addr[] = {
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0x8000000, 0x8004000, 0x8008000, 0x800c000,
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0x8010000, 0x8020000, 0x8040000, 0x8060000,
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0x8080000, 0x80a0000, 0x80c0000, 0x80e0000,
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0x8100000, 0
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};
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static uint16_t sector_erase_time[12]= {
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500, 500, 500, 500,
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1100, 2600, 2600, 2600,
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2600, 2600, 2600, 2600
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};
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static uint8_t sector_num = 0xff;
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/* Find the sector number for a given address*/
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static void get_sector_num(uint32_t addr)
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{
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int i = 0;
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while(sector_addr[i+1]) {
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if (addr < sector_addr[i+1])
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break;
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i++;
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}
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if (!sector_addr[i])
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return;
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sector_num = i & 0x1f;
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}
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void dfu_check_and_do_sector_erase(uint32_t addr)
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{
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if(addr == sector_addr[sector_num]) {
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flash_erase_sector(sector_num, FLASH_CR_PROGRAM_X32);
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}
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}
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void dfu_flash_program_buffer(uint32_t baseaddr, void *buf, int len)
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{
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for(int i = 0; i < len; i += 4)
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flash_program_word(baseaddr + i, *(uint32_t*)(buf+i));
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}
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uint32_t dfu_poll_timeout(uint8_t cmd, uint32_t addr, uint16_t blocknum)
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{
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/* Erase for big pages on STM2/4 needs "long" time
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Try not to hit USB timeouts*/
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if ((blocknum == 0) && (cmd == CMD_ERASE)) {
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get_sector_num(addr);
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if(addr == sector_addr[sector_num])
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return sector_erase_time[sector_num];
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}
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/* Programming 256 word with 100 us(max) per word*/
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return 26;
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}
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void dfu_protect(bool enable)
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{
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if (enable) {
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#ifdef DFU_SELF_PROTECT
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if ((FLASH_OPTCR & 0x10000) != 0) {
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flash_program_option_bytes(FLASH_OPTCR & ~0x10000);
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flash_lock_option_bytes();
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}
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#endif
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}
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}
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void dfu_jump_app_if_valid(void)
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{
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/* Boot the application if it's valid */
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/* Vector table may be anywhere in 128 kByte RAM
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CCM not handled*/
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if((*(volatile uint32_t*)app_address & 0x2FFC0000) == 0x20000000) {
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#if defined(STM32F7) /* Set vector table base address */
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SCB_VTOR = app_address & 0xFFFFFF00;
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#else
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SCB_VTOR = app_address & 0x1FFFFF; /* Max 2 MByte Flash*/
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#endif
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/* Initialise master stack pointer */
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asm volatile ("msr msp, %0"::"g"
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(*(volatile uint32_t*)app_address));
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/* Jump to application */
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(*(void(**)())(app_address + 4))();
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}
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}
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