2022-08-30 10:15:32 -05:00
|
|
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
|
|
|
|
2016-04-17 12:26:30 -05:00
|
|
|
/*
|
|
|
|
|
* Infineon XMC1000 flash
|
|
|
|
|
*
|
|
|
|
|
* Copyright (c) 2016 Andreas Färber
|
|
|
|
|
*
|
|
|
|
|
* Based on XMC1100 AA-Step Reference Manual
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
.text
|
|
|
|
|
.syntax unified
|
|
|
|
|
.cpu cortex-m0
|
|
|
|
|
.thumb
|
|
|
|
|
.thumb_func
|
|
|
|
|
|
|
|
|
|
#define NVMSTATUS 0x00
|
|
|
|
|
#define NVMPROG 0x04
|
|
|
|
|
#define NVMCONF 0x08
|
|
|
|
|
|
|
|
|
|
#define NVMSTATUS_BUSY (1 << 0)
|
|
|
|
|
#define NVMSTATUS_VERR_NOFAIL (0x0 << 2)
|
|
|
|
|
#define NVMSTATUS_VERR_MASK (0x3 << 2)
|
|
|
|
|
|
|
|
|
|
#define NVMPROG_ACTION_IDLE 0x00
|
|
|
|
|
#define NVMPROG_ACTION_WRITE_CONTINUOUS 0xA1
|
|
|
|
|
#define NVMPROG_ACTION_PAGE_ERASE_CONTINUOUS 0xA2
|
|
|
|
|
#define NVMPROG_ACTION_VERIFY_CONTINUOUS 0xE0
|
|
|
|
|
|
|
|
|
|
#define NVMCONF_HRLEV_NR (0x0 << 1)
|
|
|
|
|
#define NVMCONF_HRLEV_HRE (0x2 << 1)
|
|
|
|
|
#define NVMCONF_HRLEV_MASK (0x3 << 1)
|
|
|
|
|
|
|
|
|
|
#define NVM_WORD_SIZE 4
|
|
|
|
|
#define NVM_BLOCK_SIZE (4 * NVM_WORD_SIZE)
|
|
|
|
|
#define NVM_PAGE_SIZE (16 * NVM_BLOCK_SIZE)
|
|
|
|
|
|
|
|
|
|
.macro busy_wait, nvmbase, tmp, tmp2
|
|
|
|
|
1:
|
|
|
|
|
ldrh \tmp, [\nvmbase, #NVMSTATUS]
|
|
|
|
|
movs \tmp2, #NVMSTATUS_BUSY
|
|
|
|
|
ands \tmp, \tmp, \tmp2
|
|
|
|
|
cmp \tmp, \tmp2
|
|
|
|
|
beq 1b
|
|
|
|
|
|
|
|
|
|
.endm
|
