2 * Infineon XMC1000 flash write
4 * Copyright (c) 2016 Andreas Färber
6 * Based on XMC1100 AA-Step Reference Manual
13 .macro write_block, nvmbase, dest, src, tmp, tmp2
15 ldr \tmp, [\src, #0x0]
16 str \tmp, [\dest, #0x0]
17 ldr \tmp, [\src, #0x4]
18 str \tmp, [\dest, #0x4]
19 ldr \tmp, [\src, #0x8]
20 str \tmp, [\dest, #0x8]
21 ldr \tmp, [\src, #0xc]
22 str \tmp, [\dest, #0xc]
24 busy_wait \nvmbase, \tmp, \tmp2
29 .macro write, nvmbase, dest, src, count, tmp, tmp2
31 movs \tmp, #NVMPROG_ACTION_WRITE_CONTINUOUS
32 strh \tmp, [\nvmbase, #NVMPROG]
34 write_block \nvmbase, \dest, \src, \tmp, \tmp2
36 adds \dest, \dest, #NVM_BLOCK_SIZE
37 adds \src, \src, #NVM_BLOCK_SIZE
38 subs \count, \count, #1
42 movs \tmp, #NVMPROG_ACTION_IDLE
43 strh \tmp, [\nvmbase, #NVMPROG]
50 * r1 = e.g. 0x10001000
51 * r2 = e.g. 0x20000000
53 * NVMPROG.ACTION = 0x00
56 write r0, r1, r2, r3, r4, r5