- /* Copyright (c) 2011,2012 Simon Schubert <[email protected]>.
- * Modifications by Jacob Alexander 2014-2015 <[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/>.
- */
-
- // ----- Includes -----
-
- // Local Includes
- #include "mchck.h"
- #include "dfu.desc.h"
-
-
-
- // ----- Variables -----
-
- /**
- * Unfortunately we can't DMA directly to FlexRAM, so we'll have to stage here.
- */
- static char staging[FLASH_SECTOR_SIZE];
-
-
-
- // ----- Functions -----
-
- static enum dfu_status setup_write(size_t off, size_t len, void **buf)
- {
- static int last = 0;
-
- if (len > sizeof(staging))
- return (DFU_STATUS_errADDRESS);
-
- // We only allow the last write to be less than one sector size.
- if (off == 0)
- last = 0;
- if (last && len != 0)
- return (DFU_STATUS_errADDRESS);
- if (len != FLASH_SECTOR_SIZE) {
- last = 1;
- memset(staging, 0xff, sizeof(staging));
- }
-
- *buf = staging;
- return (DFU_STATUS_OK);
- }
-
- static enum dfu_status finish_write( void *buf, size_t off, size_t len )
- {
- void *target;
- if (len == 0)
- return (DFU_STATUS_OK);
-
- target = flash_get_staging_area(off + (uintptr_t)&_app_rom, FLASH_SECTOR_SIZE);
- if (!target)
- return (DFU_STATUS_errADDRESS);
- memcpy(target, buf, len);
- if (flash_program_sector(off + (uintptr_t)&_app_rom, FLASH_SECTOR_SIZE) != 0)
- return (DFU_STATUS_errADDRESS);
- return (DFU_STATUS_OK);
- }
-
-
- static struct dfu_ctx dfu_ctx;
-
- void init_usb_bootloader( int config )
- {
- dfu_init(setup_write, finish_write, &dfu_ctx);
- }
-
- void main()
- {
- #if defined(_mk20dx128vlf5_) // Kiibohd-dfu / Infinity
- // XXX McHCK uses B16 instead of A19
-
- // Enabling LED to indicate we are in the bootloader
- GPIOA_PDDR |= (1<<19);
- // Setup pin - A19 - See Lib/pin_map.mchck for more details on pins
- PORTA_PCR19 = PORT_PCR_SRE | PORT_PCR_DSE | PORT_PCR_MUX(1);
- GPIOA_PSOR |= (1<<19);
-
- #elif defined(_mk20dx256vlh7_) // Kiibohd-dfu
- // Enabling LED to indicate we are in the bootloader
- GPIOA_PDDR |= (1<<5);
- // Setup pin - A5 - See Lib/pin_map.mchck for more details on pins
- PORTA_PCR19 = PORT_PCR_SRE | PORT_PCR_DSE | PORT_PCR_MUX(1);
- GPIOA_PSOR |= (1<<5);
-
- #endif
-
- flash_prepare_flashing();
-
- usb_init( &dfu_device );
- for (;;)
- {
- usb_poll();
- }
- }
-
|