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arch: arc: add support of mpu v6

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Add support of ARC mpu v6
* minimal region size down to 32 bytes
* maximal region number up to 32
* not support uncacheable region and volatile uncached region
* clean up mpu code for better readablity

Signed-off-by: Yuguo Zou <yuguo.zou@synopsys.com>
This commit is contained in:
Yuguo Zou 2021-08-24 20:42:46 +08:00 • committed by Anas Nashif
commit eb14e21d18
7 changed files with 536 additions and 314 deletions
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2
include/arch/arc/arch.h
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@ -66,7 +66,7 @@ extern "C" {
#ifdef CONFIG_ARC_CORE_MPU
#if CONFIG_ARC_MPU_VER == 2
#define Z_ARC_MPU_ALIGN 2048
#elif (CONFIG_ARC_MPU_VER == 3) || (CONFIG_ARC_MPU_VER == 4)
#elif (CONFIG_ARC_MPU_VER == 3) || (CONFIG_ARC_MPU_VER == 4) || (CONFIG_ARC_MPU_VER == 6)
#define Z_ARC_MPU_ALIGN 32
#else
#error "Unsupported MPU version"

2
include/arch/arc/v2/linker.ld
View file

@ -30,7 +30,7 @@
#ifdef CONFIG_ARC_MPU_ENABLE
#if CONFIG_ARC_MPU_VER == 2
#define MPU_MIN_SIZE 2048
#elif (CONFIG_ARC_MPU_VER == 3) || (CONFIG_ARC_MPU_VER == 4)
#elif (CONFIG_ARC_MPU_VER == 3) || (CONFIG_ARC_MPU_VER == 4) || (CONFIG_ARC_MPU_VER == 6)
#define MPU_MIN_SIZE 32
#endif
#define MPU_MIN_SIZE_ALIGN . = ALIGN(MPU_MIN_SIZE);