flash: EFM32 flash implementation
Limited (no page unprotect, no block writes) implementation of EFM32 flash support. Verified with EFM32 development kit and STLink V2 adapter using SWD. Change-Id: I3db2054d9aa628a1fe4814430425db3c9959c71c Signed-off-by: Roman D <me@iamroman.org> Reviewed-on: http://openocd.zylin.com/1106 Tested-by: jenkins Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
This commit is contained in:
Roman D
@@ -14,6 +14,7 @@ NOR_DRIVERS = \
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at91sam7.c \
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avrf.c \
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cfi.c \
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efm32.c \
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em357.c \
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faux.c \
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lpc2000.c \
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@@ -49,6 +49,7 @@ extern struct flash_driver em357_flash;
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extern struct flash_driver dsp5680xx_flash;
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extern struct flash_driver fm3_flash;
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extern struct flash_driver kinetis_flash;
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extern struct flash_driver efm32_flash;
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/**
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* The list of built-in flash drivers.
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@@ -82,6 +83,7 @@ static struct flash_driver *flash_drivers[] = {
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&fm3_flash,
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&dsp5680xx_flash,
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&kinetis_flash,
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&efm32_flash,
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NULL,
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};
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977
src/flash/nor/efm32.c
Normal file
977
src/flash/nor/efm32.c
Normal file
@@ -0,0 +1,977 @@
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/***************************************************************************
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* Copyright (C) 2005 by Dominic Rath *
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* Dominic.Rath@gmx.de *
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* *
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* Copyright (C) 2008 by Spencer Oliver *
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* spen@spen-soft.co.uk *
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* *
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* Copyright (C) 2011 by Andreas Fritiofson *
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* andreas.fritiofson@gmail.com *
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* *
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* Copyright (C) 2013 by Roman Dmitrienko *
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* me@iamroman.org *
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*
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* This program 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 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program 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 *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "imp.h"
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#include <helper/binarybuffer.h>
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#include <target/algorithm.h>
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#include <target/armv7m.h>
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#include <target/cortex_m.h>
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/* keep family IDs in decimal */
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#define EFM_FAMILY_ID_GECKO 71
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#define EFM_FAMILY_ID_GIANT_GECKO 72
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#define EFM_FAMILY_ID_TINY_GECKO 73
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#define EFM_FAMILY_ID_LEOPARD_GECKO 74
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#define EFM32_FLASH_ERASE_TMO 100
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#define EFM32_FLASH_WDATAREADY_TMO 100
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#define EFM32_FLASH_WRITE_TMO 100
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/* size in bytes, not words; must fit all Gecko devices */
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#define LOCKBITS_PAGE_SZ 512
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#define EFM32_MSC_INFO_BASE 0x0fe00000
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#define EFM32_MSC_USER_DATA EFM32_MSC_INFO_BASE
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#define EFM32_MSC_LOCK_BITS (EFM32_MSC_INFO_BASE+0x4000)
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#define EFM32_MSC_DEV_INFO (EFM32_MSC_INFO_BASE+0x8000)
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/* PAGE_SIZE is only present in Leopard and Giant Gecko MCUs */
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#define EFM32_MSC_DI_PAGE_SIZE (EFM32_MSC_DEV_INFO+0x1e7)
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#define EFM32_MSC_DI_FLASH_SZ (EFM32_MSC_DEV_INFO+0x1f8)
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#define EFM32_MSC_DI_RAM_SZ (EFM32_MSC_DEV_INFO+0x1fa)
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#define EFM32_MSC_DI_PART_NUM (EFM32_MSC_DEV_INFO+0x1fc)
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#define EFM32_MSC_DI_PART_FAMILY (EFM32_MSC_DEV_INFO+0x1fe)
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#define EFM32_MSC_DI_PROD_REV (EFM32_MSC_DEV_INFO+0x1ff)
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#define EFM32_MSC_REGBASE 0x400c0000
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#define EFM32_MSC_WRITECTRL (EFM32_MSC_REGBASE+0x008)
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#define EFM32_MSC_WRITECTRL_WREN_MASK 0x1
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#define EFM32_MSC_WRITECMD (EFM32_MSC_REGBASE+0x00c)
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#define EFM32_MSC_WRITECMD_LADDRIM_MASK 0x1
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#define EFM32_MSC_WRITECMD_ERASEPAGE_MASK 0x2
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#define EFM32_MSC_WRITECMD_WRITEONCE_MASK 0x8
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#define EFM32_MSC_ADDRB (EFM32_MSC_REGBASE+0x010)
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#define EFM32_MSC_WDATA (EFM32_MSC_REGBASE+0x018)
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#define EFM32_MSC_STATUS (EFM32_MSC_REGBASE+0x01c)
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#define EFM32_MSC_STATUS_BUSY_MASK 0x1
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#define EFM32_MSC_STATUS_LOCKED_MASK 0x2
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#define EFM32_MSC_STATUS_INVADDR_MASK 0x4
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#define EFM32_MSC_STATUS_WDATAREADY_MASK 0x8
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#define EFM32_MSC_STATUS_WORDTIMEOUT_MASK 0x10
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#define EFM32_MSC_STATUS_ERASEABORTED_MASK 0x20
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#define EFM32_MSC_LOCK (EFM32_MSC_REGBASE+0x03c)
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#define EFM32_MSC_LOCK_LOCKKEY 0x1b71
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struct efm32x_flash_bank {
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int probed;
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uint8_t lb_page[LOCKBITS_PAGE_SZ];
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};
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struct efm32_info {
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uint16_t flash_sz_kib;
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uint16_t ram_sz_kib;
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uint16_t part_num;
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uint8_t part_family;
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uint8_t prod_rev;
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uint16_t page_size;
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};
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static int efm32x_write(struct flash_bank *bank, uint8_t *buffer,
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uint32_t offset, uint32_t count);
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static int efm32x_get_flash_size(struct flash_bank *bank, uint16_t *flash_sz)
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{
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return target_read_u16(bank->target, EFM32_MSC_DI_FLASH_SZ, flash_sz);
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}
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static int efm32x_get_ram_size(struct flash_bank *bank, uint16_t *ram_sz)
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{
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return target_read_u16(bank->target, EFM32_MSC_DI_RAM_SZ, ram_sz);
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}
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static int efm32x_get_part_num(struct flash_bank *bank, uint16_t *pnum)
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{
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return target_read_u16(bank->target, EFM32_MSC_DI_PART_NUM, pnum);
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}
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static int efm32x_get_part_family(struct flash_bank *bank, uint8_t *pfamily)
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{
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return target_read_u8(bank->target, EFM32_MSC_DI_PART_FAMILY, pfamily);
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}
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static int efm32x_get_prod_rev(struct flash_bank *bank, uint8_t *prev)
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{
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return target_read_u8(bank->target, EFM32_MSC_DI_PROD_REV, prev);
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}
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static int efm32x_read_info(struct flash_bank *bank,
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struct efm32_info *efm32_info)
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{
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int ret;
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uint32_t cpuid = 0;
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memset(efm32_info, 0, sizeof(struct efm32_info));
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ret = target_read_u32(bank->target, CPUID, &cpuid);
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if (ERROR_OK != ret)
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return ret;
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if (((cpuid >> 4) & 0xfff) == 0xc23) {
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/* Cortex M3 device */
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} else {
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LOG_ERROR("Target is not CortexM3");
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return ERROR_FAIL;
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}
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ret = efm32x_get_flash_size(bank, &(efm32_info->flash_sz_kib));
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if (ERROR_OK != ret)
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return ret;
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ret = efm32x_get_ram_size(bank, &(efm32_info->ram_sz_kib));
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if (ERROR_OK != ret)
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return ret;
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ret = efm32x_get_part_num(bank, &(efm32_info->part_num));
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if (ERROR_OK != ret)
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return ret;
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ret = efm32x_get_part_family(bank, &(efm32_info->part_family));
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if (ERROR_OK != ret)
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return ret;
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ret = efm32x_get_prod_rev(bank, &(efm32_info->prod_rev));
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if (ERROR_OK != ret)
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return ret;
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if (EFM_FAMILY_ID_GECKO == efm32_info->part_family ||
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EFM_FAMILY_ID_TINY_GECKO == efm32_info->part_family)
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efm32_info->page_size = 512;
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else if (EFM_FAMILY_ID_GIANT_GECKO == efm32_info->part_family ||
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EFM_FAMILY_ID_LEOPARD_GECKO == efm32_info->part_family) {
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uint8_t pg_size = 0;
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ret = target_read_u8(bank->target, EFM32_MSC_DI_PAGE_SIZE,
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&pg_size);
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if (ERROR_OK != ret)
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return ret;
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efm32_info->page_size = (1 << ((pg_size+10) & 0xff));
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if ((2048 != efm32_info->page_size) &&
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(4096 != efm32_info->page_size)) {
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LOG_ERROR("Invalid page size %u", efm32_info->page_size);
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return ERROR_FAIL;
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}
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} else {
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LOG_ERROR("Unknown MCU family %d", efm32_info->part_family);
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return ERROR_FAIL;
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}
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return ERROR_OK;
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}
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/* flash bank efm32 <base> <size> 0 0 <target#>
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*/
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FLASH_BANK_COMMAND_HANDLER(efm32x_flash_bank_command)
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{
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struct efm32x_flash_bank *efm32x_info;
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if (CMD_ARGC < 6)
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return ERROR_COMMAND_SYNTAX_ERROR;
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efm32x_info = malloc(sizeof(struct efm32x_flash_bank));
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bank->driver_priv = efm32x_info;
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efm32x_info->probed = 0;
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memset(efm32x_info->lb_page, 0xff, LOCKBITS_PAGE_SZ);
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return ERROR_OK;
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}
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/* set or reset given bits in a register */
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static int efm32x_set_reg_bits(struct flash_bank *bank, uint32_t reg,
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uint32_t bitmask, int set)
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{
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int ret = 0;
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uint32_t reg_val = 0;
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ret = target_read_u32(bank->target, reg, ®_val);
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if (ERROR_OK != ret)
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return ret;
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if (set)
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reg_val |= bitmask;
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else
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reg_val &= ~bitmask;
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return target_write_u32(bank->target, reg, reg_val);
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}
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static int efm32x_set_wren(struct flash_bank *bank, int write_enable)
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{
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return efm32x_set_reg_bits(bank, EFM32_MSC_WRITECTRL,
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EFM32_MSC_WRITECTRL_WREN_MASK, write_enable);
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}
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static int efm32x_msc_lock(struct flash_bank *bank, int lock)
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{
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return target_write_u32(bank->target, EFM32_MSC_LOCK,
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(lock ? 0 : EFM32_MSC_LOCK_LOCKKEY));
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}
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static int efm32x_wait_status(struct flash_bank *bank, int timeout,
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uint32_t wait_mask, int wait_for_set)
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{
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int ret = 0;
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uint32_t status = 0;
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while (1) {
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ret = target_read_u32(bank->target, EFM32_MSC_STATUS, &status);
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if (ERROR_OK != ret)
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break;
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LOG_DEBUG("status: 0x%" PRIx32 "", status);
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if (((status & wait_mask) == 0) && (0 == wait_for_set))
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break;
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else if (((status & wait_mask) != 0) && wait_for_set)
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break;
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if (timeout-- <= 0) {
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LOG_ERROR("timed out waiting for MSC status");
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return ERROR_FAIL;
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}
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alive_sleep(1);
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}
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if (status & EFM32_MSC_STATUS_ERASEABORTED_MASK)
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LOG_WARNING("page erase was aborted");
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return ret;
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}
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static int efm32x_erase_page(struct flash_bank *bank, uint32_t addr)
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{
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/* this function DOES NOT set WREN; must be set already */
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/* 1. write address to ADDRB
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2. write LADDRIM
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3. check status (INVADDR, LOCKED)
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4. write ERASEPAGE
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5. wait until !STATUS_BUSY
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*/
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int ret = 0;
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uint32_t status = 0;
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LOG_DEBUG("erasing flash page at 0x%08x", addr);
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ret = target_write_u32(bank->target, EFM32_MSC_ADDRB, addr);
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if (ERROR_OK != ret)
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return ret;
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ret = efm32x_set_reg_bits(bank, EFM32_MSC_WRITECMD,
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EFM32_MSC_WRITECMD_LADDRIM_MASK, 1);
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if (ERROR_OK != ret)
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return ret;
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ret = target_read_u32(bank->target, EFM32_MSC_STATUS, &status);
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if (ERROR_OK != ret)
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return ret;
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LOG_DEBUG("status 0x%x", status);
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if (status & EFM32_MSC_STATUS_LOCKED_MASK) {
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LOG_ERROR("Page is locked");
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return ERROR_FAIL;
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} else if (status & EFM32_MSC_STATUS_INVADDR_MASK) {
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LOG_ERROR("Invalid address 0x%x", addr);
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return ERROR_FAIL;
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}
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ret = efm32x_set_reg_bits(bank, EFM32_MSC_WRITECMD,
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EFM32_MSC_WRITECMD_ERASEPAGE_MASK, 1);
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if (ERROR_OK != ret)
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return ret;
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return efm32x_wait_status(bank, EFM32_FLASH_ERASE_TMO,
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EFM32_MSC_STATUS_BUSY_MASK, 0);
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}
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static int efm32x_erase(struct flash_bank *bank, int first, int last)
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{
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struct target *target = bank->target;
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int i = 0;
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int ret = 0;
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if (TARGET_HALTED != target->state) {
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LOG_ERROR("Target not halted");
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return ERROR_TARGET_NOT_HALTED;
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}
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efm32x_msc_lock(bank, 0);
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ret = efm32x_set_wren(bank, 1);
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if (ERROR_OK != ret) {
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LOG_ERROR("Failed to enable MSC write");
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return ret;
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}
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for (i = first; i <= last; i++) {
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ret = efm32x_erase_page(bank, bank->sectors[i].offset);
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if (ERROR_OK != ret)
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LOG_ERROR("Failed to erase page %d", i);
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}
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ret = efm32x_set_wren(bank, 0);
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efm32x_msc_lock(bank, 1);
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return ret;
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}
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static int efm32x_read_lock_data(struct flash_bank *bank)
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{
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struct efm32x_flash_bank *efm32x_info = bank->driver_priv;
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struct target *target = bank->target;
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int i = 0;
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int data_size = 0;
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uint32_t *ptr = NULL;
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int ret = 0;
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assert(!(bank->num_sectors & 0x1f));
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data_size = bank->num_sectors / 8; /* number of data bytes */
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data_size /= 4; /* ...and data dwords */
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ptr = (uint32_t *)efm32x_info->lb_page;
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for (i = 0; i < data_size; i++, ptr++) {
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ret = target_read_u32(target, EFM32_MSC_LOCK_BITS+i*4, ptr);
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if (ERROR_OK != ret) {
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LOG_ERROR("Failed to read PLW %d", i);
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return ret;
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}
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}
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/* also, read ULW, DLW and MLW */
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/* ULW, word 126 */
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ptr = ((uint32_t *)efm32x_info->lb_page) + 126;
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ret = target_read_u32(target, EFM32_MSC_LOCK_BITS+126*4, ptr);
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if (ERROR_OK != ret) {
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LOG_ERROR("Failed to read ULW");
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return ret;
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}
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/* DLW, word 127 */
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ptr = ((uint32_t *)efm32x_info->lb_page) + 127;
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ret = target_read_u32(target, EFM32_MSC_LOCK_BITS+127*4, ptr);
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if (ERROR_OK != ret) {
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LOG_ERROR("Failed to read DLW");
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return ret;
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}
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/* MLW, word 125, present in GG and LG */
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ptr = ((uint32_t *)efm32x_info->lb_page) + 125;
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ret = target_read_u32(target, EFM32_MSC_LOCK_BITS+125*4, ptr);
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if (ERROR_OK != ret) {
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LOG_ERROR("Failed to read MLW");
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return ret;
|
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}
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return ERROR_OK;
|
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}
|
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static int efm32x_write_lock_data(struct flash_bank *bank)
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{
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struct efm32x_flash_bank *efm32x_info = bank->driver_priv;
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int ret = 0;
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ret = efm32x_erase_page(bank, EFM32_MSC_LOCK_BITS);
|
||||
if (ERROR_OK != ret) {
|
||||
LOG_ERROR("Failed to erase LB page");
|
||||
return ret;
|
||||
}
|
||||
|
||||
return efm32x_write(bank, efm32x_info->lb_page, EFM32_MSC_LOCK_BITS,
|
||||
LOCKBITS_PAGE_SZ);
|
||||
}
|
||||
|
||||
static int efm32x_get_page_lock(struct flash_bank *bank, size_t page)
|
||||
{
|
||||
struct efm32x_flash_bank *efm32x_info = bank->driver_priv;
|
||||
uint32_t dw = ((uint32_t *)efm32x_info->lb_page)[page >> 5];
|
||||
uint32_t mask = 0;
|
||||
|
||||
mask = 1 << (page & 0x1f);
|
||||
|
||||
return (dw & mask) ? 0 : 1;
|
||||
}
|
||||
|
||||
static int efm32x_set_page_lock(struct flash_bank *bank, size_t page, int set)
|
||||
{
|
||||
struct efm32x_flash_bank *efm32x_info = bank->driver_priv;
|
||||
uint32_t *dw = &((uint32_t *)efm32x_info->lb_page)[page >> 5];
|
||||
uint32_t mask = 0;
|
||||
|
||||
mask = 1 << (page & 0x1f);
|
||||
|
||||
if (!set)
|
||||
*dw |= mask;
|
||||
else
|
||||
*dw &= ~mask;
|
||||
|
||||
return ERROR_OK;
|
||||
}
|
||||
|
||||
static int efm32x_protect(struct flash_bank *bank, int set, int first, int last)
|
||||
{
|
||||
struct target *target = bank->target;
|
||||
int i = 0;
|
||||
int ret = 0;
|
||||
|
||||
if (!set) {
|
||||
LOG_ERROR("Erase device data to reset page locks");
|
||||
return ERROR_FAIL;
|
||||
}
|
||||
|
||||
if (target->state != TARGET_HALTED) {
|
||||
LOG_ERROR("Target not halted");
|
||||
return ERROR_TARGET_NOT_HALTED;
|
||||
}
|
||||
|
||||
for (i = first; i <= last; i++) {
|
||||
ret = efm32x_set_page_lock(bank, i, set);
|
||||
if (ERROR_OK != ret) {
|
||||
LOG_ERROR("Failed to set lock on page %d", i);
|
||||
return ret;
|
||||
}
|
||||
}
|
||||
|
||||
ret = efm32x_write_lock_data(bank);
|
||||
if (ERROR_OK != ret) {
|
||||
LOG_ERROR("Failed to write LB page");
|
||||
return ret;
|
||||
}
|
||||
|
||||
return ERROR_OK;
|
||||
}
|
||||
|
||||
static int efm32x_write_block(struct flash_bank *bank, uint8_t *buf,
|
||||
uint32_t offset, uint32_t count)
|
||||
{
|
||||
struct target *target = bank->target;
|
||||
uint32_t buffer_size = 16384;
|
||||
struct working_area *write_algorithm;
|
||||
struct working_area *source;
|
||||
uint32_t address = bank->base + offset;
|
||||
struct reg_param reg_params[5];
|
||||
struct armv7m_algorithm armv7m_info;
|
||||
int ret = ERROR_OK;
|
||||
|
||||
/* see contrib/loaders/flash/efm32.S for src */
|
||||
static const uint8_t efm32x_flash_write_code[] = {
|
||||
/* #define EFM32_MSC_WRITECTRL_OFFSET 0x008 */
|
||||
/* #define EFM32_MSC_WRITECMD_OFFSET 0x00c */
|
||||
/* #define EFM32_MSC_ADDRB_OFFSET 0x010 */
|
||||
/* #define EFM32_MSC_WDATA_OFFSET 0x018 */
|
||||
/* #define EFM32_MSC_STATUS_OFFSET 0x01c */
|
||||
/* #define EFM32_MSC_LOCK_OFFSET 0x03c */
|
||||
|
||||
0x15, 0x4e, /* ldr r6, =#0x1b71 */
|
||||
0xc6, 0x63, /* str r6, [r0, #EFM32_MSC_LOCK_OFFSET] */
|
||||
0x01, 0x26, /* movs r6, #1 */
|
||||
0x86, 0x60, /* str r6, [r0, #EFM32_MSC_WRITECTRL_OFFSET] */
|
||||
|
||||
/* wait_fifo: */
|
||||
0x16, 0x68, /* ldr r6, [r2, #0] */
|
||||
0x00, 0x2e, /* cmp r6, #0 */
|
||||
0x22, 0xd0, /* beq exit */
|
||||
0x55, 0x68, /* ldr r5, [r2, #4] */
|
||||
0xb5, 0x42, /* cmp r5, r6 */
|
||||
0xf9, 0xd0, /* beq wait_fifo */
|
||||
|
||||
0x04, 0x61, /* str r4, [r0, #EFM32_MSC_ADDRB_OFFSET] */
|
||||
0x01, 0x26, /* movs r6, #1 */
|
||||
0xc6, 0x60, /* str r6, [r0, #EFM32_MSC_WRITECMD_OFFSET] */
|
||||
0xc6, 0x69, /* ldr r6, [r0, #EFM32_MSC_STATUS_OFFSET] */
|
||||
0x06, 0x27, /* movs r7, #6 */
|
||||
0x3e, 0x42, /* tst r6, r7 */
|
||||
0x16, 0xd1, /* bne error */
|
||||
|
||||
/* wait_wdataready: */
|
||||
0xc6, 0x69, /* ldr r6, [r0, #EFM32_MSC_STATUS_OFFSET] */
|
||||
0x08, 0x27, /* movs r7, #8 */
|
||||
0x3e, 0x42, /* tst r6, r7 */
|
||||
0xfb, 0xd0, /* beq wait_wdataready */
|
||||
|
||||
0x2e, 0x68, /* ldr r6, [r5] */
|
||||
0x86, 0x61, /* str r6, [r0, #EFM32_MSC_WDATA_OFFSET] */
|
||||
0x08, 0x26, /* movs r6, #8 */
|
||||
0xc6, 0x60, /* str r6, [r0, #EFM32_MSC_WRITECMD_OFFSET] */
|
||||
|
||||
0x04, 0x35, /* adds r5, #4 */
|
||||
0x04, 0x34, /* adds r4, #4 */
|
||||
|
||||
/* busy: */
|
||||
0xc6, 0x69, /* ldr r6, [r0, #EFM32_MSC_STATUS_OFFSET] */
|
||||
0x01, 0x27, /* movs r7, #1 */
|
||||
0x3e, 0x42, /* tst r6, r7 */
|
||||
0xfb, 0xd1, /* bne busy */
|
||||
|
||||
0x9d, 0x42, /* cmp r5, r3 */
|
||||
0x01, 0xd3, /* bcc no_wrap */
|
||||
0x15, 0x46, /* mov r5, r2 */
|
||||
0x08, 0x35, /* adds r5, #8 */
|
||||
|
||||
/* no_wrap: */
|
||||
0x55, 0x60, /* str r5, [r2, #4] */
|
||||
0x01, 0x39, /* subs r1, r1, #1 */
|
||||
0x00, 0x29, /* cmp r1, #0 */
|
||||
0x02, 0xd0, /* beq exit */
|
||||
0xdb, 0xe7, /* b wait_fifo */
|
||||
|
||||
/* error: */
|
||||
0x00, 0x20, /* movs r0, #0 */
|
||||
0x50, 0x60, /* str r0, [r2, #4] */
|
||||
|
||||
/* exit: */
|
||||
0x30, 0x46, /* mov r0, r6 */
|
||||
0x00, 0xbe, /* bkpt #0 */
|
||||
|
||||
/* LOCKKEY */
|
||||
0x71, 0x1b, 0x00, 0x00
|
||||
};
|
||||
|
||||
/* flash write code */
|
||||
if (target_alloc_working_area(target, sizeof(efm32x_flash_write_code),
|
||||
&write_algorithm) != ERROR_OK) {
|
||||
LOG_WARNING("no working area available, can't do block memory writes");
|
||||
return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
|
||||
};
|
||||
|
||||
ret = target_write_buffer(target, write_algorithm->address,
|
||||
sizeof(efm32x_flash_write_code),
|
||||
(uint8_t *)efm32x_flash_write_code);
|
||||
if (ret != ERROR_OK)
|
||||
return ret;
|
||||
|
||||
/* memory buffer */
|
||||
while (target_alloc_working_area_try(target, buffer_size, &source) != ERROR_OK) {
|
||||
buffer_size /= 2;
|
||||
buffer_size &= ~3UL; /* Make sure it's 4 byte aligned */
|
||||
if (buffer_size <= 256) {
|
||||
/* we already allocated the writing code, but failed to get a
|
||||
* buffer, free the algorithm */
|
||||
target_free_working_area(target, write_algorithm);
|
||||
|
||||
LOG_WARNING("no large enough working area available, can't do block memory writes");
|
||||
return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
|
||||
}
|
||||
};
|
||||
|
||||
init_reg_param(®_params[0], "r0", 32, PARAM_IN_OUT); /* flash base (in), status (out) */
|
||||
init_reg_param(®_params[1], "r1", 32, PARAM_OUT); /* count (word-32bit) */
|
||||
init_reg_param(®_params[2], "r2", 32, PARAM_OUT); /* buffer start */
|
||||
init_reg_param(®_params[3], "r3", 32, PARAM_OUT); /* buffer end */
|
||||
init_reg_param(®_params[4], "r4", 32, PARAM_IN_OUT); /* target address */
|
||||
|
||||
buf_set_u32(reg_params[0].value, 0, 32, EFM32_MSC_REGBASE);
|
||||
buf_set_u32(reg_params[1].value, 0, 32, count);
|
||||
buf_set_u32(reg_params[2].value, 0, 32, source->address);
|
||||
buf_set_u32(reg_params[3].value, 0, 32, source->address + source->size);
|
||||
buf_set_u32(reg_params[4].value, 0, 32, address);
|
||||
|
||||
armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
|
||||
armv7m_info.core_mode = ARMV7M_MODE_ANY;
|
||||
|
||||
ret = target_run_flash_async_algorithm(target, buf, count, 4,
|
||||
0, NULL,
|
||||
5, reg_params,
|
||||
source->address, source->size,
|
||||
write_algorithm->address, 0,
|
||||
&armv7m_info);
|
||||
|
||||
if (ret == ERROR_FLASH_OPERATION_FAILED) {
|
||||
LOG_ERROR("flash write failed at address 0x%"PRIx32,
|
||||
buf_get_u32(reg_params[4].value, 0, 32));
|
||||
|
||||
if (buf_get_u32(reg_params[0].value, 0, 32) &
|
||||
EFM32_MSC_STATUS_LOCKED_MASK) {
|
||||
LOG_ERROR("flash memory write protected");
|
||||
}
|
||||
|
||||
if (buf_get_u32(reg_params[0].value, 0, 32) &
|
||||
EFM32_MSC_STATUS_INVADDR_MASK) {
|
||||
LOG_ERROR("invalid flash memory write address");
|
||||
}
|
||||
}
|
||||
|
||||
target_free_working_area(target, source);
|
||||
target_free_working_area(target, write_algorithm);
|
||||
|
||||
destroy_reg_param(®_params[0]);
|
||||
destroy_reg_param(®_params[1]);
|
||||
destroy_reg_param(®_params[2]);
|
||||
destroy_reg_param(®_params[3]);
|
||||
destroy_reg_param(®_params[4]);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int efm32x_write_word(struct flash_bank *bank, uint32_t addr,
|
||||
uint32_t val)
|
||||
{
|
||||
/* this function DOES NOT set WREN; must be set already */
|
||||
/* 1. write address to ADDRB
|
||||
2. write LADDRIM
|
||||
3. check status (INVADDR, LOCKED)
|
||||
4. wait for WDATAREADY
|
||||
5. write data to WDATA
|
||||
6. write WRITECMD_WRITEONCE to WRITECMD
|
||||
7. wait until !STATUS_BUSY
|
||||
*/
|
||||
|
||||
/* FIXME: EFM32G ref states (7.3.2) that writes should be
|
||||
* performed twice per dword */
|
||||
|
||||
int ret = 0;
|
||||
uint32_t status = 0;
|
||||
|
||||
/* if not called, GDB errors will be reported during large writes */
|
||||
keep_alive();
|
||||
|
||||
ret = target_write_u32(bank->target, EFM32_MSC_ADDRB, addr);
|
||||
if (ERROR_OK != ret)
|
||||
return ret;
|
||||
|
||||
ret = efm32x_set_reg_bits(bank, EFM32_MSC_WRITECMD,
|
||||
EFM32_MSC_WRITECMD_LADDRIM_MASK, 1);
|
||||
if (ERROR_OK != ret)
|
||||
return ret;
|
||||
|
||||
ret = target_read_u32(bank->target, EFM32_MSC_STATUS, &status);
|
||||
if (ERROR_OK != ret)
|
||||
return ret;
|
||||
|
||||
LOG_DEBUG("status 0x%x", status);
|
||||
|
||||
if (status & EFM32_MSC_STATUS_LOCKED_MASK) {
|
||||
LOG_ERROR("Page is locked");
|
||||
return ERROR_FAIL;
|
||||
} else if (status & EFM32_MSC_STATUS_INVADDR_MASK) {
|
||||
LOG_ERROR("Invalid address 0x%x", addr);
|
||||
return ERROR_FAIL;
|
||||
}
|
||||
|
||||
ret = efm32x_wait_status(bank, EFM32_FLASH_WDATAREADY_TMO,
|
||||
EFM32_MSC_STATUS_WDATAREADY_MASK, 1);
|
||||
if (ERROR_OK != ret) {
|
||||
LOG_ERROR("Wait for WDATAREADY failed");
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = target_write_u32(bank->target, EFM32_MSC_WDATA, val);
|
||||
if (ERROR_OK != ret) {
|
||||
LOG_ERROR("WDATA write failed");
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = target_write_u32(bank->target, EFM32_MSC_WRITECMD,
|
||||
EFM32_MSC_WRITECMD_WRITEONCE_MASK);
|
||||
if (ERROR_OK != ret) {
|
||||
LOG_ERROR("WRITECMD write failed");
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = efm32x_wait_status(bank, EFM32_FLASH_WRITE_TMO,
|
||||
EFM32_MSC_STATUS_BUSY_MASK, 0);
|
||||
if (ERROR_OK != ret) {
|
||||
LOG_ERROR("Wait for BUSY failed");
|
||||
return ret;
|
||||
}
|
||||
|
||||
return ERROR_OK;
|
||||
}
|
||||
|
||||
static int efm32x_write(struct flash_bank *bank, uint8_t *buffer,
|
||||
uint32_t offset, uint32_t count)
|
||||
{
|
||||
struct target *target = bank->target;
|
||||
uint8_t *new_buffer = NULL;
|
||||
|
||||
if (target->state != TARGET_HALTED) {
|
||||
LOG_ERROR("Target not halted");
|
||||
return ERROR_TARGET_NOT_HALTED;
|
||||
}
|
||||
|
||||
if (offset & 0x3) {
|
||||
LOG_ERROR("offset 0x%" PRIx32 " breaks required 4-byte "
|
||||
"alignment", offset);
|
||||
return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
|
||||
}
|
||||
|
||||
if (count & 0x3) {
|
||||
uint32_t old_count = count;
|
||||
count = (old_count | 3) + 1;
|
||||
new_buffer = malloc(count);
|
||||
if (new_buffer == NULL) {
|
||||
LOG_ERROR("odd number of bytes to write and no memory "
|
||||
"for padding buffer");
|
||||
return ERROR_FAIL;
|
||||
}
|
||||
LOG_INFO("odd number of bytes to write (%d), extending to %d "
|
||||
"and padding with 0xff", old_count, count);
|
||||
memset(buffer, 0xff, count);
|
||||
buffer = memcpy(new_buffer, buffer, old_count);
|
||||
}
|
||||
|
||||
uint32_t words_remaining = count / 4;
|
||||
int retval, retval2;
|
||||
|
||||
/* unlock flash registers */
|
||||
efm32x_msc_lock(bank, 0);
|
||||
retval = efm32x_set_wren(bank, 1);
|
||||
if (retval != ERROR_OK)
|
||||
goto cleanup;
|
||||
|
||||
/* try using a block write */
|
||||
retval = efm32x_write_block(bank, buffer, offset, words_remaining);
|
||||
|
||||
if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE) {
|
||||
/* if block write failed (no sufficient working area),
|
||||
* we use normal (slow) single word accesses */
|
||||
LOG_WARNING("couldn't use block writes, falling back to single "
|
||||
"memory accesses");
|
||||
|
||||
while (words_remaining > 0) {
|
||||
uint32_t value;
|
||||
memcpy(&value, buffer, sizeof(uint32_t));
|
||||
|
||||
retval = efm32x_write_word(bank, offset, value);
|
||||
if (retval != ERROR_OK)
|
||||
goto reset_pg_and_lock;
|
||||
|
||||
words_remaining--;
|
||||
buffer += 4;
|
||||
offset += 4;
|
||||
}
|
||||
}
|
||||
|
||||
reset_pg_and_lock:
|
||||
retval2 = efm32x_set_wren(bank, 0);
|
||||
efm32x_msc_lock(bank, 1);
|
||||
if (retval == ERROR_OK)
|
||||
retval = retval2;
|
||||
|
||||
cleanup:
|
||||
if (new_buffer)
|
||||
free(new_buffer);
|
||||
|
||||
return retval;
|
||||
}
|
||||
|
||||
static int efm32x_probe(struct flash_bank *bank)
|
||||
{
|
||||
struct efm32x_flash_bank *efm32x_info = bank->driver_priv;
|
||||
struct efm32_info efm32_mcu_info;
|
||||
int ret;
|
||||
int i;
|
||||
uint32_t base_address = 0x00000000;
|
||||
|
||||
efm32x_info->probed = 0;
|
||||
memset(efm32x_info->lb_page, 0xff, LOCKBITS_PAGE_SZ);
|
||||
|
||||
ret = efm32x_read_info(bank, &efm32_mcu_info);
|
||||
if (ERROR_OK != ret)
|
||||
return ret;
|
||||
|
||||
switch (efm32_mcu_info.part_family) {
|
||||
case EFM_FAMILY_ID_GECKO:
|
||||
LOG_INFO("Gecko MCU detected");
|
||||
break;
|
||||
case EFM_FAMILY_ID_GIANT_GECKO:
|
||||
LOG_INFO("Giant Gecko MCU detected");
|
||||
break;
|
||||
case EFM_FAMILY_ID_TINY_GECKO:
|
||||
LOG_INFO("Tiny Gecko MCU detected");
|
||||
break;
|
||||
case EFM_FAMILY_ID_LEOPARD_GECKO:
|
||||
LOG_INFO("Leopard Gecko MCU detected");
|
||||
break;
|
||||
default:
|
||||
LOG_ERROR("Unsupported MCU family %d",
|
||||
efm32_mcu_info.part_family);
|
||||
return ERROR_FAIL;
|
||||
}
|
||||
|
||||
LOG_INFO("flash size = %dkbytes", efm32_mcu_info.flash_sz_kib);
|
||||
LOG_INFO("flash page size = %dbytes", efm32_mcu_info.page_size);
|
||||
|
||||
assert(0 != efm32_mcu_info.page_size);
|
||||
|
||||
int num_pages = efm32_mcu_info.flash_sz_kib * 1024 /
|
||||
efm32_mcu_info.page_size;
|
||||
|
||||
assert(num_pages > 0);
|
||||
|
||||
if (bank->sectors) {
|
||||
free(bank->sectors);
|
||||
bank->sectors = NULL;
|
||||
}
|
||||
|
||||
bank->base = base_address;
|
||||
bank->size = (num_pages * efm32_mcu_info.page_size);
|
||||
bank->num_sectors = num_pages;
|
||||
|
||||
ret = efm32x_read_lock_data(bank);
|
||||
if (ERROR_OK != ret) {
|
||||
LOG_ERROR("Failed to read LB data");
|
||||
return ret;
|
||||
}
|
||||
|
||||
bank->sectors = malloc(sizeof(struct flash_sector) * num_pages);
|
||||
|
||||
for (i = 0; i < num_pages; i++) {
|
||||
bank->sectors[i].offset = i * efm32_mcu_info.page_size;
|
||||
bank->sectors[i].size = efm32_mcu_info.page_size;
|
||||
bank->sectors[i].is_erased = -1;
|
||||
bank->sectors[i].is_protected = 1;
|
||||
}
|
||||
|
||||
efm32x_info->probed = 1;
|
||||
|
||||
return ERROR_OK;
|
||||
}
|
||||
|
||||
static int efm32x_auto_probe(struct flash_bank *bank)
|
||||
{
|
||||
struct efm32x_flash_bank *efm32x_info = bank->driver_priv;
|
||||
if (efm32x_info->probed)
|
||||
return ERROR_OK;
|
||||
return efm32x_probe(bank);
|
||||
}
|
||||
|
||||
static int efm32x_protect_check(struct flash_bank *bank)
|
||||
{
|
||||
struct target *target = bank->target;
|
||||
int ret = 0;
|
||||
int i = 0;
|
||||
|
||||
if (target->state != TARGET_HALTED) {
|
||||
LOG_ERROR("Target not halted");
|
||||
return ERROR_TARGET_NOT_HALTED;
|
||||
}
|
||||
|
||||
ret = efm32x_read_lock_data(bank);
|
||||
if (ERROR_OK != ret) {
|
||||
LOG_ERROR("Failed to read LB data");
|
||||
return ret;
|
||||
}
|
||||
|
||||
assert(NULL != bank->sectors);
|
||||
|
||||
for (i = 0; i < bank->num_sectors; i++)
|
||||
bank->sectors[i].is_protected = efm32x_get_page_lock(bank, i);
|
||||
|
||||
return ERROR_OK;
|
||||
}
|
||||
|
||||
static int get_efm32x_info(struct flash_bank *bank, char *buf, int buf_size)
|
||||
{
|
||||
struct efm32_info info;
|
||||
int ret = 0;
|
||||
int printed = 0;
|
||||
|
||||
ret = efm32x_read_info(bank, &info);
|
||||
if (ERROR_OK != ret) {
|
||||
LOG_ERROR("Failed to read EFM32 info");
|
||||
return ret;
|
||||
}
|
||||
|
||||
printed = snprintf(buf, buf_size, "EFM32 ");
|
||||
buf += printed;
|
||||
buf_size -= printed;
|
||||
|
||||
if (0 >= buf_size)
|
||||
return ERROR_BUF_TOO_SMALL;
|
||||
|
||||
switch (info.part_family) {
|
||||
case EFM_FAMILY_ID_GECKO:
|
||||
printed = snprintf(buf, buf_size, "Gecko");
|
||||
break;
|
||||
case EFM_FAMILY_ID_GIANT_GECKO:
|
||||
printed = snprintf(buf, buf_size, "Giant Gecko");
|
||||
break;
|
||||
case EFM_FAMILY_ID_TINY_GECKO:
|
||||
printed = snprintf(buf, buf_size, "Tiny Gecko");
|
||||
break;
|
||||
case EFM_FAMILY_ID_LEOPARD_GECKO:
|
||||
printed = snprintf(buf, buf_size, "Leopard Gecko");
|
||||
break;
|
||||
}
|
||||
|
||||
buf += printed;
|
||||
buf_size -= printed;
|
||||
|
||||
if (0 >= buf_size)
|
||||
return ERROR_BUF_TOO_SMALL;
|
||||
|
||||
printed = snprintf(buf, buf_size, " - Rev: %d", info.prod_rev);
|
||||
buf += printed;
|
||||
buf_size -= printed;
|
||||
|
||||
if (0 >= buf_size)
|
||||
return ERROR_BUF_TOO_SMALL;
|
||||
|
||||
return ERROR_OK;
|
||||
}
|
||||
|
||||
static const struct command_registration efm32x_exec_command_handlers[] = {
|
||||
COMMAND_REGISTRATION_DONE
|
||||
};
|
||||
|
||||
static const struct command_registration efm32x_command_handlers[] = {
|
||||
{
|
||||
.name = "efm32",
|
||||
.mode = COMMAND_ANY,
|
||||
.help = "efm32 flash command group",
|
||||
.usage = "",
|
||||
.chain = efm32x_exec_command_handlers,
|
||||
},
|
||||
COMMAND_REGISTRATION_DONE
|
||||
};
|
||||
|
||||
struct flash_driver efm32_flash = {
|
||||
.name = "efm32",
|
||||
.commands = efm32x_command_handlers,
|
||||
.flash_bank_command = efm32x_flash_bank_command,
|
||||
.erase = efm32x_erase,
|
||||
.protect = efm32x_protect,
|
||||
.write = efm32x_write,
|
||||
.read = default_flash_read,
|
||||
.probe = efm32x_probe,
|
||||
.auto_probe = efm32x_auto_probe,
|
||||
.erase_check = default_flash_blank_check,
|
||||
.protect_check = efm32x_protect_check,
|
||||
.info = get_efm32x_info,
|
||||
};
|
||||
Reference in New Issue
Block a user