sergiotarxz/nuttx
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

arm64: support up_coherent_dcache function

Browse Source 
Before code is executed after being loaded into memory,
it is necessary to ensure the consistency of I and D cache.
The up_coherent_dcache function will flush the dache and
invalidate the icache to ensure cache consistency.

Signed-off-by: zhangyuan21 <zhangyuan21@xiaomi.com>
This commit is contained in:
zhangyuan21 2023-10-10 19:23:28 +08:00 committed by Xiang Xiao
parent ca46cbb0bd
commit 21d9066c95
1 changed files with 27 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
arch/arm64/src/common/arm64_cache.c
View File

@ -596,3 +596,30 @@ void up_flush_dcache_all(void)
{
arm64_dcache_all(CACHE_OP_WB_INVD);
}
/****************************************************************************
* Name: up_coherent_dcache
*
* Description:
* Ensure that the I and D caches are coherent within specified region
* by cleaning the D cache (i.e., flushing the D cache contents to memory
* and invalidating the I cache. This is typically used when code has been
* written to a memory region, and will be executed.
*
* Input Parameters:
* addr - virtual start address of region
* len - Size of the address region in bytes
*
* Returned Value:
* None
*
****************************************************************************/
void up_coherent_dcache(uintptr_t addr, size_t len)
{
if (len > 0)
{
arm64_dcache_range(addr, addr + len, CACHE_OP_WB_INVD);
up_invalidate_icache_all();
}
}