From 86cc37183a9f5f7f86a9e20d9e8c3460d22aca50 Mon Sep 17 00:00:00 2001 From: Spencer Oliver Date: Tue, 20 Nov 2012 12:53:22 +0000 Subject: [PATCH] flash: stm32f2x support write protection Change-Id: I42662681104bb06e28148229464ae144c4a54538 Signed-off-by: Spencer Oliver Reviewed-on: http://openocd.zylin.com/989 Tested-by: jenkins --- src/flash/nor/stm32f2x.c | 49 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) diff --git a/src/flash/nor/stm32f2x.c b/src/flash/nor/stm32f2x.c index 4083882bb9..7201914dc1 100644 --- a/src/flash/nor/stm32f2x.c +++ b/src/flash/nor/stm32f2x.c @@ -377,6 +377,28 @@ static int stm32x_write_options(struct flash_bank *bank) static int stm32x_protect_check(struct flash_bank *bank) { + struct target *target = bank->target; + struct stm32x_flash_bank *stm32x_info = bank->driver_priv; + + if (target->state != TARGET_HALTED) { + LOG_ERROR("Target not halted"); + return ERROR_TARGET_NOT_HALTED; + } + + /* read write protection settings */ + int retval = stm32x_read_options(bank); + if (retval != ERROR_OK) { + LOG_DEBUG("unable to read option bytes"); + return retval; + } + + for (int i = 0; i < bank->num_sectors; i++) { + if (stm32x_info->option_bytes.protection & (1 << i)) + bank->sectors[i].is_protected = 0; + else + bank->sectors[i].is_protected = 1; + } + return ERROR_OK; } @@ -428,6 +450,33 @@ static int stm32x_erase(struct flash_bank *bank, int first, int last) static int stm32x_protect(struct flash_bank *bank, int set, int first, int last) { + struct target *target = bank->target; + struct stm32x_flash_bank *stm32x_info = bank->driver_priv; + + if (target->state != TARGET_HALTED) { + LOG_ERROR("Target not halted"); + return ERROR_TARGET_NOT_HALTED; + } + + /* read protection settings */ + int retval = stm32x_read_options(bank); + if (retval != ERROR_OK) { + LOG_DEBUG("unable to read option bytes"); + return retval; + } + + for (int i = first; i <= last; i++) { + + if (set) + stm32x_info->option_bytes.protection &= ~(1 << i); + else + stm32x_info->option_bytes.protection |= (1 << i); + } + + retval = stm32x_write_options(bank); + if (retval != ERROR_OK) + return retval; + return ERROR_OK; } -- 2.30.2