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