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| author | Vincent Palatin <vpalatin@chromium.org> | 2014-03-07 19:06:54 -0800 |
|---|---|---|
| committer | chrome-internal-fetch <chrome-internal-fetch@google.com> | 2014-03-22 06:24:16 +0000 |
| commit | 60e47a730f9a0c0eb20ccd067954009c192418c9 (patch) | |
| tree | 7c78a02d75a18f1715f09624bc7c415aee92ef7d /core/cortex-m | |
| parent | 727b4e4e0d54e46e196d2d129ab432f537d2c301 (diff) | |
| download | chrome-ec-60e47a730f9a0c0eb20ccd067954009c192418c9.tar.gz | |
make the common runtime optional
In order to achieve really tiny firmwares, make our runtime (tasks,
hooks, muxed timers, GPIO abstraction ...) optional.
Add 2 new build options for it : CONFIG_COMMON_RUNTIME and
CONFIG_COMMON_GPIO which are enabled by default, and ensure all the
source files are built according to the right configuration variable.
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
BRANCH=none
BUG=none
TEST=make buildall
build a minimal board with no runtime.
Change-Id: Icb621cbe0a75b3a320cb53c3267d6e578cd3c32f
Reviewed-on: https://chromium-review.googlesource.com/189403
Reviewed-by: Vic Yang <victoryang@chromium.org>
Commit-Queue: Vincent Palatin <vpalatin@chromium.org>
Tested-by: Vincent Palatin <vpalatin@chromium.org>
Diffstat (limited to 'core/cortex-m')
| -rw-r--r-- | core/cortex-m/build.mk | 4 | ||||
| -rw-r--r-- | core/cortex-m/init.S | 4 | ||||
| -rw-r--r-- | core/cortex-m/task.c | 2 |
3 files changed, 8 insertions, 2 deletions
diff --git a/core/cortex-m/build.mk b/core/cortex-m/build.mk index 741ec005cc..5306865984 100644 --- a/core/cortex-m/build.mk +++ b/core/cortex-m/build.mk @@ -17,6 +17,8 @@ CFLAGS_CPU+=-mthumb -Os -mno-sched-prolog CFLAGS_CPU+=-mno-unaligned-access CFLAGS_CPU+=$(CFLAGS_FPU-y) -core-y=cpu.o init.o panic.o switch.o task.o +core-y=cpu.o init.o +core-$(CONFIG_COMMON_PANIC_OUTPUT)+=panic.o +core-$(CONFIG_COMMON_RUNTIME)+=switch.o task.o core-$(CONFIG_WATCHDOG)+=watchdog.o core-$(CONFIG_MPU)+=mpu.o diff --git a/core/cortex-m/init.S b/core/cortex-m/init.S index 78c2307545..00072c7f0f 100644 --- a/core/cortex-m/init.S +++ b/core/cortex-m/init.S @@ -374,8 +374,12 @@ fini_loop: /* Default exception handler */ .thumb_func default_handler: +#ifdef CONFIG_COMMON_PANIC_OUTPUT b exception_panic +#endif + b reset +.align 2 _bss_start: .long __bss_start _bss_end: diff --git a/core/cortex-m/task.c b/core/cortex-m/task.c index c0cbc84d59..5e309ef4cb 100644 --- a/core/cortex-m/task.c +++ b/core/cortex-m/task.c @@ -330,7 +330,7 @@ static uint32_t __wait_evt(int timeout_us, task_id_t resched) task_ *tsk = current_task; task_id_t me = tsk - tasks; uint32_t evt; - int ret; + int ret __attribute__((unused)); ASSERT(!in_interrupt_context()); |