Previously the USB RAM size was off by a factor of two
for chips that required 32-bit alignment of accesses,
even though the underlying memory was 16-bits in size.
This change adds an additional configuration for the
access size (it still assumes that the underlying memory
is 16-bits in size) and uses that to adjust the USB_RAM
memory section in the linker scripts.
This change also removes the default values for the USB
RAM from stm32/config_chip.h because they mask issues
when new chips are added. It is better for a new chip
to fail to compile until these values are provided.
Finally, this change introduces a common USB API header
so that common code doesn't need to include the STM32
specific header.
Signed-off-by: Anton Staaf <robotboy@chromium.org>
BRANCH=None
BUG=None
TEST=make buildall -j
Enable console on ryu_p2 and discovery-stm32f072 board
Verify that it works on both
Change-Id: Id118627f53e9e8ff1bd09fb51f1f9634ff495d19
Reviewed-on: https://chromium-review.googlesource.com/228833
Tested-by: Anton Staaf <robotboy@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
Commit-Queue: Anton Staaf <robotboy@chromium.org>
74a98425ef