97 lines
2.6 KiB
C
97 lines
2.6 KiB
C
|
/* Copyright (c) 2011,2012 Simon Schubert <2@0x2c.org>.
|
||
|
|
* Modifications by Jacob Alexander 2014 <haata@kiibohd.com>
|
||
|
|
*
|
||
|
|
* 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"
|
||
|
|
#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()
|
||
|
|
{
|
||
|
|
// 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);
|
||
|
|
|
||
|
|
flash_prepare_flashing();
|
||
|
|
|
||
|
|
usb_init( &dfu_device );
|
||
|
|
for (;;)
|
||
|
|
{
|
||
|
|
usb_poll();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|