From: Niko Mauno <[email protected]> In this series, we first introduce a clean-up where we switch to use predefined bit masks instead of hard-coded values for count and magic halves in the single-word (32-bit) boot count scheme.
Then we fix a case of missing boot count value masking in single-word scenario in bootcount.c, which allowed clobbering of the magic half when storing the value. With this change the clobbering preventing behavior becomes consistent with existing single word bootcount storing implementations in bootcount_at91.c and bootcount_davinci.c. Finally, we enable the DM I2C bootcount driver to work also in single word (4 byte) mode, in addition to the pre-existing half-word (2 byte) mode. By default the driver still operates in half word mode as so far, but can now be used alternatively in single word mode by adding 'size = <0x4>;' in the associated device tree node. Signed-off-by: Niko Mauno <[email protected]> -- Niko Mauno (3): bootcount: Use predefined count/magic bit masks bootcount: Fix potential clobbering issue bootcount: dm_i2c: Support also single word mode drivers/bootcount/bootcount.c | 14 ++--- drivers/bootcount/bootcount_at91.c | 7 +-- drivers/bootcount/bootcount_davinci.c | 6 +-- drivers/bootcount/bootcount_dm_i2c.c | 74 +++++++++++++++++++-------- include/bootcount.h | 5 ++ 5 files changed, 74 insertions(+), 32 deletions(-) -- 2.47.3
