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arc: start mpu in prep_c, do not use SYS_INIT 

Initialize MPU in prep_c similar to how all other architectures do it,
avoid use of SYS_INIT.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
This commit is contained in:
Anas Nashif 2024-07-08 16:36:30 -04:00
parent 6ec74d02b6
commit 2294da24d7
3 changed files with 10 additions and 11 deletions
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6
arch/arc/core/mpu/arc_mpu_common_internal.h
View File

@ -238,7 +238,7 @@ int arc_core_mpu_buffer_validate(const void *addr, size_t size, int write)
* This function provides the default configuration mechanism for the Memory
* Protection Unit (MPU).
*/
static int arc_mpu_init(void)
void arc_mpu_init(void)
{
uint32_t num_regions = get_num_regions();
@ -246,7 +246,6 @@ static int arc_mpu_init(void)
if (mpu_config.num_regions > num_regions) {
__ASSERT(0, "Request to configure: %u regions (supported: %u)\n",
mpu_config.num_regions, num_regions);
return -EINVAL;
}
/* Disable MPU */
@ -278,10 +277,7 @@ static int arc_mpu_init(void)
/* Enable MPU */
arc_core_mpu_enable();
return 0;
}
SYS_INIT(arc_mpu_init, PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);
#endif /* ZEPHYR_ARCH_ARC_CORE_MPU_ARC_MPU_COMMON_INTERNAL_H_ */

10
arch/arc/core/mpu/arc_mpu_v4_internal.h
View File

@ -814,7 +814,7 @@ int arc_core_mpu_buffer_validate(const void *addr, size_t size, int write)
* This function provides the default configuration mechanism for the Memory
* Protection Unit (MPU).
*/
static int arc_mpu_init(void)
void arc_mpu_init(void)
{
uint32_t num_regions;
uint32_t i;
@ -826,7 +826,7 @@ static int arc_mpu_init(void)
__ASSERT(0,
"Request to configure: %u regions (supported: %u)\n",
mpu_config.num_regions, num_regions);
return -EINVAL;
return;
}
static_regions_num = 0U;
@ -851,7 +851,7 @@ static int arc_mpu_init(void)
MPU_DYNAMIC_REGION_AREAS_NUM) {
LOG_ERR("not enough dynamic regions %d",
dynamic_regions_num);
return -EINVAL;
return;
}
dyn_reg_info[dynamic_regions_num].index = i;
@ -886,10 +886,8 @@ static int arc_mpu_init(void)
/* Enable MPU */
arc_core_mpu_enable();
return 0;
return;
}
SYS_INIT(arc_mpu_init, PRE_KERNEL_1,
CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);
#endif /* ZEPHYR_ARCH_ARC_CORE_MPU_ARC_MPU_V4_INTERNAL_H_ */

5
arch/arc/core/prep_c.c
View File

@ -115,6 +115,8 @@ static void dev_state_zero(void)
#endif
extern FUNC_NORETURN void z_cstart(void);
extern void arc_mpu_init(void);
/**
* @brief Prepare to and run C code
*
@ -138,6 +140,9 @@ void z_prep_c(void)
z_data_copy();
#if CONFIG_ARCH_CACHE
arch_cache_init();
#endif
#ifdef CONFIG_ARC_MPU
arc_mpu_init();
#endif
z_cstart();
CODE_UNREACHABLE;