flash: handle zero when reading stm32 flash size reg

[openocd.git] / src / flash / nor / stm32f1x.c

diff --git a/src/flash/nor/stm32f1x.c b/src/flash/nor/stm32f1x.c
index 938785ef1b5826475f95718dfb5d815ffc1247e9..b6359a0a86ce1ed7c08c8aa45687a4938c0d4f3b 100644 (file)
--- a/src/flash/nor/stm32f1x.c
+++ b/src/flash/nor/stm32f1x.c
@@ -902,6 +902,11 @@ static int stm32x_probe(struct flash_bank *bank)
                flash_size_in_kb = 0xffff;
        }
 
+       /* some variants read 0 for flash size register
+        * use a max flash size as a default */
+       if (flash_size_in_kb == 0)
+               flash_size_in_kb = 0xffff;
+
        if ((device_id & 0xfff) == 0x410) {
                /* medium density - we have 1k pages
                 * 4 pages for a protection area */