diff options
| author | Vic (Chun-Ju) Yang <victoryang@chromium.org> | 2013-11-28 10:05:28 +0800 |
|---|---|---|
| committer | chrome-internal-fetch <chrome-internal-fetch@google.com> | 2013-12-02 04:54:29 +0000 |
| commit | 5a3c90d5db8ce869cad977ed143a198e221689ae (patch) | |
| tree | fcccf2c7c052158ad4c2f8e808f46507e78161c7 | |
| parent | ca8289258d14923f3ce375654f2daae18c110c39 (diff) | |
| download | chrome-ec-5a3c90d5db8ce869cad977ed143a198e221689ae.tar.gz | |
Add a BSS section for large alignment
BSS section is usually put at the beginning of the RAM, so large
alignemnt causes the least memory usage penalty here, compared to
alignment using __attribute__((aligned(x))).
Also remove .bss.tasks and .bss.task_scratchpad, which are both not
present anymore.
BUG=chrome-os-partner:24107
TEST=Build all boards. Boot mec1322_evb.
BRANCH=None
Change-Id: Ie19b9feb76773a94f0443c2a0d39505ddef7a1df
Signed-off-by: Vic (Chun-Ju) Yang <victoryang@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/178274
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
| -rw-r--r-- | core/cortex-m/ec.lds.S | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/core/cortex-m/ec.lds.S b/core/cortex-m/ec.lds.S index 093b47bb20..c0c87e1343 100644 --- a/core/cortex-m/ec.lds.S +++ b/core/cortex-m/ec.lds.S @@ -141,11 +141,16 @@ SECTIONS "Increase DEFERRABLE_MAX_COUNT") .bss : { - /* Stacks must be 64-bit aligned */ - . = ALIGN(8); + /* + * Align to 512 bytes. This is convenient when some memory block + * need big alignment. When COMPILE_FOR_RAM is not set, this is the + * beginning of the RAM, so there is usually no penalty on aligning + * this. + */ + . = ALIGN(512); __bss_start = .; - *(.bss.tasks) - *(.bss.task_scratchpad) + *(.bss.big_align) + /* Stacks must be 64-bit aligned */ . = ALIGN(8); *(.bss.system_stack) /* Rest of .bss takes care of its own alignment */ |