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flash/nor: at91samd protection bits write fix

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Flash protection set on a device with MANW=1 was lost after reset.
Since #2903 the driver honored MANW bit and issued Write Page command just
for main flash write. This change adds similar technique to
samd_modify_user_row().

Minor code improvements:
samd_check_error() returns error code corresponding to error type
instead of bool.

samd_check_error() does not clear STATUS register if no error bit is set.

Eliminated double error check in call sequence samd_issue_nvmctrl_command()
folowed by samd_check_error().

Missing error code ERROR_FLASH_PROTECTED added to src/flash/common.h.

Change-Id: Icf59ab8803305d0cb3170c8a5089b8f9828b99f8
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: http://openocd.zylin.com/3550
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
This commit is contained in:
Tomas Vanek
2016-07-18 22:59:17 +02:00
committed by Paul Fertser
parent 25d7ba19c9
commit 4732471b2e
2 changed files with 44 additions and 40 deletions
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src/flash/common.h
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@@ -44,5 +44,6 @@ bool flash_driver_name_matches(const char *name, const char *expected);
#define ERROR_FLASH_SECTOR_NOT_ERASED (-906)
#define ERROR_FLASH_BANK_NOT_PROBED (-907)
#define ERROR_FLASH_OPER_UNSUPPORTED (-908)
#define ERROR_FLASH_PROTECTED (-909)
#endif /* OPENOCD_FLASH_COMMON_H */