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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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15
Lib/mk20dx.c
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@ -394,7 +394,7 @@ const uint8_t flashconfigbytes[16] = {
// http://cache.freescale.com/files/microcontrollers/doc/app_note/AN4507.pdf
// http://cache.freescale.com/files/32bit/doc/ref_manual/K20P64M72SF1RM.pdf (28.34.6)
//
0xFF, 0xFF, 0xFF, 0xFE, // Program Flash Protection Bytes FPROT0-3
0xFF, 0xFF, 0xFF, 0xFF, // Program Flash Protection Bytes FPROT0-3 // XXX TODO PROTECT
0xBE, // Flash security byte FSEC
0x03, // Flash nonvolatile option byte FOPT
@ -469,8 +469,17 @@ void ResetHandler()
//
// Also checking for ARM lock-up signal (invalid firmware image)
// RCM_SRS1 & 0x02
if ( RCM_SRS0 & 0x40 || RCM_SRS0 & 0x20 || RCM_SRS1 & 0x02 || _app_rom == 0xffffffff ||
memcmp( (uint8_t*)&VBAT, sys_reset_to_loader_magic, sizeof(sys_reset_to_loader_magic) ) == 0 ) // Check for soft reload
if ( // PIN (External Reset Pin/Switch)
RCM_SRS0 & 0x40
// WDOG (Watchdog timeout)
|| RCM_SRS0 & 0x20
// LOCKUP (ARM Core LOCKUP event)
|| RCM_SRS1 & 0x02
// Blank flash check
|| _app_rom == 0xffffffff
// Software reset
|| memcmp( (uint8_t*)&VBAT, sys_reset_to_loader_magic, sizeof(sys_reset_to_loader_magic) ) == 0
)
{
memset( (uint8_t*)&VBAT, 0, sizeof(VBAT) );
}