From ca9dcc86d7d9f465950a0670a8c7a852ae2ca798 Mon Sep 17 00:00:00 2001 From: Armin van der Togt Date: Thu, 2 Mar 2017 17:31:14 +0100 Subject: Fix flash writing on stm32l0 Fix "couldn't use loader, falling back to page memory writes" error on stm32l0 which was caused by the use of cortex-m3 instructions in the flash loader code. The loader is rewritten using cortex-m0 compatible instructions Signed-off-by: Armin van der Togt Change-Id: If23027b8e09f74e45129e1f8452a04bb994c424e Reviewed-on: http://openocd.zylin.com/4036 Tested-by: jenkins Reviewed-by: Freddie Chopin --- src/flash/nor/stm32lx.c | 16 ++-------------- 1 file changed, 2 insertions(+), 14 deletions(-) (limited to 'src/flash') diff --git a/src/flash/nor/stm32lx.c b/src/flash/nor/stm32lx.c index 0b39233..63dc961 100644 --- a/src/flash/nor/stm32lx.c +++ b/src/flash/nor/stm32lx.c @@ -450,19 +450,7 @@ static int stm32lx_write_half_pages(struct flash_bank *bank, const uint8_t *buff /* see contib/loaders/flash/stm32lx.S for src */ static const uint8_t stm32lx_flash_write_code[] = { - /* write_word: */ - 0x00, 0x23, /* movs r3, #0 */ - 0x04, 0xe0, /* b test_done */ - - /* write_word: */ - 0x51, 0xf8, 0x04, 0xcb, /* ldr ip, [r1], #4 */ - 0x40, 0xf8, 0x04, 0xcb, /* str ip, [r0], #4 */ - 0x01, 0x33, /* adds r3, #1 */ - - /* test_done: */ - 0x93, 0x42, /* cmp r3, r2 */ - 0xf8, 0xd3, /* bcc write_word */ - 0x00, 0xbe, /* bkpt 0 */ + 0x92, 0x00, 0x8A, 0x18, 0x01, 0xE0, 0x08, 0xC9, 0x08, 0xC0, 0x91, 0x42, 0xFB, 0xD1, 0x00, 0xBE }; /* Make sure we're performing a half-page aligned write. */ @@ -588,7 +576,7 @@ static int stm32lx_write_half_pages(struct flash_bank *bank, const uint8_t *buff * is reduced by 50% using this slower method. */ - LOG_WARNING("couldn't use loader, falling back to page memory writes"); + LOG_WARNING("Couldn't use loader, falling back to page memory writes"); while (count > 0) { uint32_t this_count; -- cgit v1.1