mirror of https://github.com/wolfSSL/wolfBoot.git
131 lines
3.0 KiB
C
131 lines
3.0 KiB
C
/* nrf52.c
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*
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* Copyright (C) 2021 wolfSSL Inc.
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*
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* This file is part of wolfBoot.
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*
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* wolfBoot is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* wolfBoot is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
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*/
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#ifdef TARGET_nrf52
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#include <stdint.h>
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#include "image.h"
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#include "nrf52.h"
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#ifdef DEBUG_UART
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void uart_init(void)
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{
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UART0_BAUDRATE = BAUD_115200;
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UART0_ENABLE = 1;
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}
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static void uart_write_char(char c)
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{
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UART0_EVENT_ENDTX = 0;
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UART0_TXD_PTR = (uint32_t)(&c);
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UART0_TXD_MAXCOUNT = 1;
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UART0_TASK_STARTTX = 1;
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while(UART0_EVENT_ENDTX == 0)
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;
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}
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void uart_write(const char* buf, unsigned int sz)
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{
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uint32_t pos = 0;
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while (sz-- > 0) {
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char c = buf[pos++];
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if (c == '\n') { /* handle CRLF */
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uart_write_char('\r');
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}
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uart_write_char(c);
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}
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}
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#endif /* DEBUG_UART */
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static void RAMFUNCTION flash_wait_complete(void)
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{
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while (NVMC_READY == 0)
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;
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}
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int RAMFUNCTION hal_flash_write(uint32_t address, const uint8_t *data, int len)
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{
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int i = 0;
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uint32_t *src, *dst;
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while (i < len) {
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if ((len - i > 3) && ((((address + i) & 0x03) == 0) && ((((uint32_t)data) + i) & 0x03) == 0)) {
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src = (uint32_t *)data;
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dst = (uint32_t *)address;
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NVMC_CONFIG = NVMC_CONFIG_WEN;
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flash_wait_complete();
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dst[i >> 2] = src[i >> 2];
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flash_wait_complete();
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i+=4;
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} else {
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uint32_t val;
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uint8_t *vbytes = (uint8_t *)(&val);
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int off = (address + i) - (((address + i) >> 2) << 2);
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dst = (uint32_t *)(address - off);
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val = dst[i >> 2];
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vbytes[off] = data[i];
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NVMC_CONFIG = NVMC_CONFIG_WEN;
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flash_wait_complete();
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dst[i >> 2] = val;
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flash_wait_complete();
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i++;
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}
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}
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return 0;
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}
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void RAMFUNCTION hal_flash_unlock(void)
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{
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}
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void RAMFUNCTION hal_flash_lock(void)
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{
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}
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int RAMFUNCTION hal_flash_erase(uint32_t address, int len)
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{
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uint32_t end = address + len - 1;
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uint32_t p;
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for (p = address; p <= end; p += FLASH_PAGE_SIZE) {
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NVMC_CONFIG = NVMC_CONFIG_EEN;
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flash_wait_complete();
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NVMC_ERASEPAGE = p;
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flash_wait_complete();
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}
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return 0;
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}
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void hal_init(void)
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{
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TASKS_HFCLKSTART = 1;
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while(TASKS_HFCLKSTARTED == 0)
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;
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}
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void hal_prepare_boot(void)
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{
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TASKS_HFCLKSTOP = 1;
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}
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#endif /* TARGET_nrf52 */
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