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Some initial bringup of the dfu bootloader on the mk20dx256vlh7

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This commit is contained in:
Jacob Alexander 2015-04-04 23:21:11 -07:00
parent 46fc3e596b
commit e41444304b
17 changed files with 249 additions and 65 deletions
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78
Bootloader/main.c
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@ -28,27 +28,29 @@
/**
* Unfortunately we can't DMA directly to FlexRAM, so we'll have to stage here.
*/
static char staging[FLASH_SECTOR_SIZE];
static char staging[ FLASH_SECTOR_SIZE ];
// ----- Functions -----
static enum dfu_status setup_write(size_t off, size_t len, void **buf)
static enum dfu_status setup_write( size_t off, size_t len, void **buf )
{
GPIOA_PCOR |= (1<<5);
static int last = 0;
if (len > sizeof(staging))
if ( len > sizeof(staging) )
return (DFU_STATUS_errADDRESS);
// We only allow the last write to be less than one sector size.
if (off == 0)
if ( off == 0 )
last = 0;
if (last && len != 0)
if ( last && len != 0 )
return (DFU_STATUS_errADDRESS);
if (len != FLASH_SECTOR_SIZE) {
if ( len != FLASH_SECTOR_SIZE )
{
last = 1;
memset(staging, 0xff, sizeof(staging));
memset( staging, 0xff, sizeof(staging) );
}
*buf = staging;
@ -58,16 +60,30 @@ static enum dfu_status setup_write(size_t off, size_t len, void **buf)
static enum dfu_status finish_write( void *buf, size_t off, size_t len )
{
void *target;
if (len == 0)
if ( len == 0 )
return (DFU_STATUS_OK);
target = flash_get_staging_area(off + (uintptr_t)&_app_rom, FLASH_SECTOR_SIZE);
if (!target)
if ( !target )
return (DFU_STATUS_errADDRESS);
memcpy(target, buf, len);
if (flash_program_sector(off + (uintptr_t)&_app_rom, FLASH_SECTOR_SIZE) != 0)
memcpy( target, buf, len );
// Depending on the error return a different status
switch ( flash_program_sector(off + (uintptr_t)&_app_rom, FLASH_SECTOR_SIZE) )
{
/*
case FTFL_FSTAT_RDCOLERR: // Flash Read Collision Error
case FTFL_FSTAT_ACCERR: // Flash Access Error
case FTFL_FSTAT_FPVIOL: // Flash Protection Violation Error
return (DFU_STATUS_errADDRESS);
return (DFU_STATUS_OK);
case FTFL_FSTAT_MGSTAT0: // Memory Controller Command Completion Error
return (DFU_STATUS_errADDRESS);
*/
case 0:
default: // No error
return (DFU_STATUS_OK);
}
}
@ -93,17 +109,51 @@ void main()
// 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);
PORTA_PCR5 = PORT_PCR_SRE | PORT_PCR_DSE | PORT_PCR_MUX(1);
GPIOA_PSOR |= (1<<5);
#else
#error "Incompatible chip for bootloader"
#endif
//for (uint8_t c = 0; c < 20; c++)
/*
while( 1 )
{
GPIOA_PTOR |= (1<<5);
for (uint32_t d = 0; d < 7200000; d++ );
}
*/
// XXX REMOVEME
/*
GPIOB_PDDR |= (1<<16);
PORTB_PCR16 = PORT_PCR_SRE | PORT_PCR_DSE | PORT_PCR_MUX(1);
GPIOB_PSOR |= (1<<16);
*/
flash_prepare_flashing();
uint32_t *position = &_app_rom;
usb_init( &dfu_device );
for (;;)
{
usb_poll();
/*
for ( ; position < &_app_rom + 0x201; position++ )
//for ( ; position < &_app_rom + 0x800; position++ )
{
if ( *position != 0xFFFFFFFF )
{
while( 1 )
{
GPIOA_PTOR |= (1<<5);
for (uint32_t d = 0; d < 7200000; d++ );
}
}
}
*/
}
}