From c4b52f8fd7b06f8cec5db5cdf33fd984a255ceaa Mon Sep 17 00:00:00 2001 From: Grigori Goronzy Date: Thu, 30 Oct 2014 01:14:58 +0100 Subject: [PATCH] lpc2000: ignore status of part ID IAP command The IAP firmware won't return a proper status with some versions. This happens on my CCC r0ket board and others have seen it as well [1]. So just ignore the status code and do a (weak) consistency check instead. [1] http://www.lpcware.com/content/forum/lpc1343-iap-read-part-identification-command Change-Id: I0daa779d520a540629677c56857bbc20d6db422d Signed-off-by: Grigori Goronzy Reviewed-on: http://openocd.zylin.com/2364 Tested-by: jenkins Reviewed-by: Paul Fertser --- src/flash/nor/lpc2000.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/src/flash/nor/lpc2000.c b/src/flash/nor/lpc2000.c index 9c0cc1e2..2d2c1a55 100644 --- a/src/flash/nor/lpc2000.c +++ b/src/flash/nor/lpc2000.c @@ -1145,12 +1145,16 @@ static int get_lpc2000_part_id(struct flash_bank *bank, uint32_t *part_id) if (retval != ERROR_OK) return retval; - int status_code = lpc2000_iap_call(bank, iap_working_area, 54, param_table, result_table); + /* The status seems to be bogus with the part ID command on some IAP + firmwares, so ignore it. */ + lpc2000_iap_call(bank, iap_working_area, 54, param_table, result_table); - if (status_code == LPC2000_CMD_SUCCESS) - *part_id = result_table[0]; + /* If the result is zero, the command probably didn't work out. */ + if (result_table[0] == 0) + return LPC2000_INVALID_COMMAND; - return status_code; + *part_id = result_table[0]; + return LPC2000_CMD_SUCCESS; } static int lpc2000_auto_probe_flash(struct flash_bank *bank) -- 2.39.5