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Create fimrware/asm directory for assembly optimized stuff.

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This dir is suitable for stuff that doesn't fit the target tree, e.g. because
it also builds on hosted or otherwise. It also has a generic subfolder for
fallback C implementations so that not all archs need to provide asm files.

SOURCES should only contain "foo.c" where foo.c includes the specific
<arch>/foo.c files from the subdirs using the preprocessor. This way automatic
selection of asm versions or generic C verion is possible.

For the start, the thread support files are moved, since ASM threads can
be used on hosted platforms as well. Since core_sleep() remains platform
specific it's moved to the corresponding system.h headers.

Change-Id: Iebff272f3407a6eaafeb7656ceb0ae9eca3f7cb9
This commit is contained in:
Thomas Martitz 2012-01-04 18:07:21 +01:00
parent eaa83bd647
commit 991ae1e395
24 changed files with 352 additions and 295 deletions
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24
firmware/target/mips/ingenic_jz47xx/system-target.h
View file

@ -97,4 +97,28 @@ void dma_disable(void);
#define DMA_IRQ(n) (IRQ_DMA_0 + (n))
#define GPIO_IRQ(n) (IRQ_GPIO_0 + (n))
/*---------------------------------------------------------------------------
* Put core in a power-saving state.
*---------------------------------------------------------------------------
*/
static inline void core_sleep(void)
{
#if CONFIG_CPU == JZ4732
__cpm_idle_mode();
#endif
asm volatile(".set mips32r2 \n"
"mfc0 $8, $12 \n" /* mfc t0, $12 */
"move $9, $8 \n" /* move t1, t0 */
"la $10, 0x8000000 \n" /* la t2, 0x8000000 */
"or $8, $8, $10 \n" /* Enable reduced power mode */
"mtc0 $8, $12 \n" /* mtc t0, $12 */
"wait \n"
"mtc0 $9, $12 \n" /* mtc t1, $12 */
".set mips0 \n"
::: "t0", "t1", "t2"
);
enable_irq();
}
#endif /* __SYSTEM_TARGET_H_ */