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/*
* Infineon XMC1000 flash write
*
* Copyright (c) 2016 Andreas Färber
*
* Based on XMC1100 AA-Step Reference Manual
*
* License: GPL-2.0+
*/
#include "xmc1xxx.S"
.macro write_block, nvmbase, dest, src, tmp, tmp2
ldr \tmp, [\src, #0x0]
str \tmp, [\dest, #0x0]
ldr \tmp, [\src, #0x4]
str \tmp, [\dest, #0x4]
ldr \tmp, [\src, #0x8]
str \tmp, [\dest, #0x8]
ldr \tmp, [\src, #0xc]
str \tmp, [\dest, #0xc]
busy_wait \nvmbase, \tmp, \tmp2
.endm
.macro write, nvmbase, dest, src, count, tmp, tmp2
movs \tmp, #NVMPROG_ACTION_WRITE_CONTINUOUS
strh \tmp, [\nvmbase, #NVMPROG]
1001:
write_block \nvmbase, \dest, \src, \tmp, \tmp2
adds \dest, \dest, #NVM_BLOCK_SIZE
adds \src, \src, #NVM_BLOCK_SIZE
subs \count, \count, #1
cmp \count, #0
bgt 1001b
movs \tmp, #NVMPROG_ACTION_IDLE
strh \tmp, [\nvmbase, #NVMPROG]
.endm
/*
* r0 = 0x40050000
* r1 = e.g. 0x10001000
* r2 = e.g. 0x20000000
* r3 = e.g. 1
* NVMPROG.ACTION = 0x00
*/
write:
write r0, r1, r2, r3, r4, r5
bkpt #0
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