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flash/stm32l4x: fix dual bank support for STM32L552xC devices 

For STM32L552xC devices with 256K flash:
  dual bank mode is activated if DB256 is set
  page size is 2KB if DBANK is set

For parts with 512K (aka STM32L5x2xE):
  DBANK controls both of dual/single bank mode and page size as well.

Change-Id: I8be668d5552fefe81acffaf2e3e35ef5e938162e
Signed-off-by: Tarek BOCHKATI <tarek.bouchkati@gmail.com>
Reported-by: Patrik Bachan <diggit@users.sourceforge.net>
Fixes: https://sourceforge.net/p/openocd/tickets/317/
Reviewed-on: https://review.openocd.org/c/openocd/+/6538
Tested-by: jenkins
Reviewed-by: Oleksij Rempel <linux@rempel-privat.de>
This commit is contained in:
Tarek BOCHKATI 2021-09-02 12:03:59 +01:00 committed by Oleksij Rempel
parent 050fcb1760
commit a1903f2867
1 changed files with 5 additions and 3 deletions
src/flash/nor
stm32l4x.c

8
src/flash/nor/stm32l4x.c
View File

@ -1923,15 +1923,17 @@ static int stm32l4_probe(struct flash_bank *bank)
/* STM32L55/L56xx can be single/dual bank:
* if size = 512K check DBANK bit
* if size = 256K check DB256K bit
*
* default page size is 4kb, if DBANK = 1, the page size is 2kb.
*/
page_size_kb = 4;
page_size_kb = (stm32l4_info->optr & FLASH_L5_DBANK) ? 2 : 4;
num_pages = flash_size_kb / page_size_kb;
stm32l4_info->bank1_sectors = num_pages;
if ((is_max_flash_size && (stm32l4_info->optr & FLASH_L5_DBANK)) ||
(!is_max_flash_size && (stm32l4_info->optr & FLASH_L5_DB256))) {
stm32l4_info->dual_bank_mode = true;
page_size_kb = 2;
num_pages = flash_size_kb / page_size_kb;
stm32l4_info->bank1_sectors = num_pages / 2;
}
break;