Add flash page layout support for STM32F4 SoCs.
This almost eliminates the need for flash_map.h, except for
STM32F4X_SECTOR_MASK, so delete the file and move the define into the
F4 implementation, to keep things simple.
Signed-off-by: Marti Bolivar <marti.bolivar@linaro.org>
This is a prep work commit for adding flash page layout support.
The internal flash APIs for STM32 on L4 and F4 are a bit
inconsistent. Some routines take a pointer to the private data, others
don't. Those that do take it as a last argument instead of a
first. Additionally, some APIs are declared in flash_stm32.h that
aren't ever used by the family-specific files.
Clean this up by making everything take a struct device*, and marking
routines static in the common driver code when possible.
Signed-off-by: Marti Bolivar <marti.bolivar@linaro.org>
L4 write access requires 64 bits alignment
while L4 read access does not require any alignment.
To support specific check according to read/write,erase
a parameter is added to stm32_valid_range.
Signed-off-by: Michel Jaouen <michel.jaouen@st.com>
The STM32L4x SoCs embeds a slightly different embedded flash controller
from the STM32F4x SoCs.
This particular controller has the following properties :
- Up to 2 512KiB banks divided in 2KiB pages
- Flash can be accessed in any sizes
- Flash must be written in 64bit aligned 64bit double-words
The drivers/flash/flash_stm32f4x.c is refactored into a new common
drivers/flash/flash_stm32.c and drivers/flash/flash_stm32l4x.c is
created with the STM32L4x specific functions.
To ease the refactoring and keep common functions, the STM32L4x flash
headers are slightly modified to match the hardware reference naming
and solve compilation issues.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Marti Bolivar