The BCSR17[7] = 1 will unlock the write protect of FLASH. The WP# pin only controls the write protect of top/bottom sector, That is why we can save env, but we can't write the first sector before the patch.
Signed-off-by: Dave Liu daveliu@freescale.com --- board/freescale/mpc8569mds/bcsr.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/board/freescale/mpc8569mds/bcsr.c b/board/freescale/mpc8569mds/bcsr.c index 5adffc2..f462597 100644 --- a/board/freescale/mpc8569mds/bcsr.c +++ b/board/freescale/mpc8569mds/bcsr.c @@ -27,7 +27,7 @@
void enable_8569mds_flash_write() { - setbits_8((u8 *)(CONFIG_SYS_BCSR_BASE + 11), BCSR17_FLASH_nWP); + setbits_8((u8 *)(CONFIG_SYS_BCSR_BASE + 17), BCSR17_FLASH_nWP); }
void disable_8569mds_flash_write()