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- /* Copyright (c) 2011,2012 Simon Schubert <[email protected]>.
- * Modifications by Jacob Alexander 2014 <[email protected]>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
- // ----- Local Includes -----
-
- #include "mchck.h"
-
-
-
- // ----- Variables -----
-
- uint32_t flash_ALLOW_BRICKABLE_ADDRESSES;
-
-
-
- // ----- Functions -----
-
- /* This will have to live in SRAM. */
- __attribute__((section(".ramtext.ftfl_submit_cmd"), long_call))
- int ftfl_submit_cmd(void)
- {
- FTFL.fstat.raw = ((struct FTFL_FSTAT_t){
- .ccif = 1,
- .rdcolerr = 1,
- .accerr = 1,
- .fpviol = 1
- }).raw;
- struct FTFL_FSTAT_t stat;
- while (!(stat = FTFL.fstat).ccif)
- /* NOTHING */; /* XXX maybe WFI? */
- return (!!stat.mgstat0);
- }
-
- int flash_prepare_flashing(void)
- {
- /* switch to FlexRAM */
- if (!FTFL.fcnfg.ramrdy) {
- FTFL.fccob.set_flexram.fcmd = FTFL_FCMD_SET_FLEXRAM;
- FTFL.fccob.set_flexram.flexram_function = FTFL_FLEXRAM_RAM;
- return (ftfl_submit_cmd());
- }
- return (0);
- }
-
- int flash_erase_sector(uintptr_t addr)
- {
- if (addr < (uintptr_t)&_app_rom &&
- flash_ALLOW_BRICKABLE_ADDRESSES != 0x00023420)
- return (-1);
- FTFL.fccob.erase.fcmd = FTFL_FCMD_ERASE_SECTOR;
- FTFL.fccob.erase.addr = addr;
- return (ftfl_submit_cmd());
- }
-
- int flash_program_section(uintptr_t addr, size_t num_words)
- {
- FTFL.fccob.program_section.fcmd = FTFL_FCMD_PROGRAM_SECTION;
- FTFL.fccob.program_section.addr = addr;
- FTFL.fccob.program_section.num_words = num_words;
- return (ftfl_submit_cmd());
- }
-
- int flash_program_sector(uintptr_t addr, size_t len)
- {
- return (len != FLASH_SECTOR_SIZE ||
- (addr & (FLASH_SECTOR_SIZE - 1)) != 0 ||
- flash_erase_sector(addr) ||
- flash_program_section(addr, FLASH_SECTOR_SIZE/4));
- }
-
- void *flash_get_staging_area(uintptr_t addr, size_t len)
- {
- if ((addr & (FLASH_SECTOR_SIZE - 1)) != 0 ||
- len != FLASH_SECTOR_SIZE)
- return (NULL);
- return (FlexRAM);
- }
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