93 lines
2.8 KiB
C
93 lines
2.8 KiB
C
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/* Copyright (c) 2011,2012 Simon Schubert <2@0x2c.org>.
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* Modifications by Jacob Alexander 2014 <haata@kiibohd.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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// ----- Local Includes -----
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#include "mchck.h"
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// ----- Variables -----
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uint32_t flash_ALLOW_BRICKABLE_ADDRESSES;
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// ----- Functions -----
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/* This will have to live in SRAM. */
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__attribute__((section(".ramtext.ftfl_submit_cmd"), long_call))
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int ftfl_submit_cmd(void)
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{
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FTFL.fstat.raw = ((struct FTFL_FSTAT_t){
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.ccif = 1,
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.rdcolerr = 1,
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.accerr = 1,
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.fpviol = 1
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}).raw;
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struct FTFL_FSTAT_t stat;
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while (!(stat = FTFL.fstat).ccif)
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/* NOTHING */; /* XXX maybe WFI? */
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return (!!stat.mgstat0);
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}
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int flash_prepare_flashing(void)
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{
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/* switch to FlexRAM */
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if (!FTFL.fcnfg.ramrdy) {
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FTFL.fccob.set_flexram.fcmd = FTFL_FCMD_SET_FLEXRAM;
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FTFL.fccob.set_flexram.flexram_function = FTFL_FLEXRAM_RAM;
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return (ftfl_submit_cmd());
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}
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return (0);
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}
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int flash_erase_sector(uintptr_t addr)
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{
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if (addr < (uintptr_t)&_app_rom &&
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flash_ALLOW_BRICKABLE_ADDRESSES != 0x00023420)
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return (-1);
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FTFL.fccob.erase.fcmd = FTFL_FCMD_ERASE_SECTOR;
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FTFL.fccob.erase.addr = addr;
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return (ftfl_submit_cmd());
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}
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int flash_program_section(uintptr_t addr, size_t num_words)
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{
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FTFL.fccob.program_section.fcmd = FTFL_FCMD_PROGRAM_SECTION;
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FTFL.fccob.program_section.addr = addr;
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FTFL.fccob.program_section.num_words = num_words;
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return (ftfl_submit_cmd());
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}
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int flash_program_sector(uintptr_t addr, size_t len)
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{
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return (len != FLASH_SECTOR_SIZE ||
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(addr & (FLASH_SECTOR_SIZE - 1)) != 0 ||
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flash_erase_sector(addr) ||
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flash_program_section(addr, FLASH_SECTOR_SIZE/4));
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}
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void *flash_get_staging_area(uintptr_t addr, size_t len)
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{
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if ((addr & (FLASH_SECTOR_SIZE - 1)) != 0 ||
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len != FLASH_SECTOR_SIZE)
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return (NULL);
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return (FlexRAM);
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}
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