After writing data to flash space, next instruction is checking if flash
controller is busy writing to the flash memory. Memory barrier is required here
to avoid transaction re-ordering for data write and busy status check.
Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
Same flash driver can be used by other stm32 families like stm32f7.
Better place for this driver would be mtd driver location.
Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
Old sector number is not being cleared from FLASH_CR register. For example
when first erased sector was 001 and then you want to erase sector 010,
sector 011 gets erased instead.
This patch clears old sector number from FLASH_CR register before a new
one is written.
Signed-off-by: Vadzim Dambrouski <pftbest@gmail.com>
flash_lock call is inside a for loop, so after the first iteration flash
is locked and no more sectors can be erased.
Move flash_lock out of the loop.
Signed-off-by: Vadzim Dambrouski <pftbest@gmail.com>
Vikas Manocha
Kamil Lulko
Vadzim Dambrouski
rev13@wp.pl