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| author | Jack Rosenthal <jrosenth@chromium.org> | 2021-01-05 14:23:53 -0700 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2021-01-06 16:37:52 +0000 |
| commit | b63c2bbf5c9773956874e6220bd54317b39d39d2 (patch) | |
| tree | fd719b6dcf03a6212b8f80b8f682396e8bd91853 /common/shared_mem.c | |
| parent | 3ab745a4517ec5b1ee7f0c9bea544ea6f33a5c53 (diff) | |
| download | chrome-ec-b63c2bbf5c9773956874e6220bd54317b39d39d2.tar.gz | |
zephyr: add a fake shared memory implementation for posix-ec
CL:2575207 was not tested against posix-ec and caused build issues.
posix-ec does not have the _image_ram_end symbol available. This adds
a new configuration for a fake 1MB shared memory option, and enables
it for posix architecture by default.
Note that if this CL (or an alternative fix) cannot be landed in a
timely fashion, CL:2575207 and any CLs which depend on it should be
reverted so we can enable the CQ again and stop stepping on our own
toes.
BUG=b:176828988
BRANCH=none
TEST=run zephyr-chrome firmware_builder.py
Signed-off-by: Jack Rosenthal <jrosenth@chromium.org>
Change-Id: I1d828f480c6a5da0b162a124c8a5a62ae8afb444
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2611985
Reviewed-by: Yuval Peress <peress@chromium.org>
Diffstat (limited to 'common/shared_mem.c')
| -rw-r--r-- | common/shared_mem.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/common/shared_mem.c b/common/shared_mem.c index be420f60a6..e435408d3b 100644 --- a/common/shared_mem.c +++ b/common/shared_mem.c @@ -15,8 +15,14 @@ static int buf_in_use; static int max_used; +/* 1 MB buffer for fake shared memory implementation */ +STATIC_IF(CONFIG_FAKE_SHMEM) char fake_shmem_buf[BIT(20)]; + int shared_mem_size(void) { + if (IS_ENABLED(CONFIG_FAKE_SHMEM)) + return sizeof(fake_shmem_buf); + /* * Use all the RAM we can. The shared memory buffer is the last thing * allocated from the start of RAM, so we can use everything up to the @@ -39,7 +45,10 @@ int shared_mem_acquire(int size, char **dest_ptr) */ buf_in_use = size; - *dest_ptr = __shared_mem_buf; + if (IS_ENABLED(CONFIG_FAKE_SHMEM)) + *dest_ptr = fake_shmem_buf; + else + *dest_ptr = __shared_mem_buf; if (max_used < size) max_used = size; |