ARMmbed
/
mbed-os
mirror of https://github.com/ARMmbed/mbed-os.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Support mbed_start_application for Cortex-M23

pull/6949/head
ccli8 2018-05-17 18:18:18 +08:00
parent 79640c6a88
commit b3f17a9e01
2 changed files with 27 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
platform/mbed_application.c
View File

@ -48,12 +48,20 @@ static void powerdown_nvic()
int i;
int j;
#if defined(__CORTEX_M23)
isr_groups_32 = 16;
#else
isr_groups_32 = ((SCnSCB->ICTR & SCnSCB_ICTR_INTLINESNUM_Msk) >> SCnSCB_ICTR_INTLINESNUM_Pos) + 1;
#endif
for (i = 0; i < isr_groups_32; i++) {
NVIC->ICER[i] = 0xFFFFFFFF;
NVIC->ICPR[i] = 0xFFFFFFFF;
for (j = 0; j < 8; j++) {
#if defined(__CORTEX_M23)
NVIC->IPR[i * 8 + j] = 0x00000000;
#else
NVIC->IP[i * 8 + j] = 0x00000000;
#endif
}
}
}
@ -69,17 +77,20 @@ static void powerdown_scb(uint32_t vtor)
SCB->SCR = 0x00000000;
// SCB->CCR - Implementation defined value
for (i = 0; i < 12; i++) {
#if defined(__CORTEX_M7)
#if defined(__CORTEX_M7) || defined(__CORTEX_M23)
SCB->SHPR[i] = 0x00;
#else
SCB->SHP[i] = 0x00;
#endif
}
SCB->SHCSR = 0x00000000;
#if defined(__CORTEX_M23)
#else
SCB->CFSR = 0xFFFFFFFF;
SCB->HFSR = SCB_HFSR_DEBUGEVT_Msk | SCB_HFSR_FORCED_Msk | SCB_HFSR_VECTTBL_Msk;
SCB->DFSR = SCB_DFSR_EXTERNAL_Msk | SCB_DFSR_VCATCH_Msk |
SCB_DFSR_DWTTRAP_Msk | SCB_DFSR_BKPT_Msk | SCB_DFSR_HALTED_Msk;
#endif
// SCB->MMFAR - Implementation defined value
// SCB->BFAR - Implementation defined value
// SCB->AFSR - Implementation defined value
@ -106,6 +117,18 @@ __asm static void start_new_application(void *sp, void *pc)
void start_new_application(void *sp, void *pc)
{
#if defined(__CORTEX_M23)
__asm volatile (
"ldr r2, =0 \n"
"msr control, r2 \n" // Switch to main stack
"mov sp, %0 \n"
"msr primask, r2 \n" // Enable interrupts
"bx %1 \n"
:
: "l" (sp), "l" (pc)
: "r2", "cc", "memory"
);
#else
__asm volatile (
"mov r2, #0 \n"
"msr control, r2 \n" // Switch to main stack
@ -116,6 +139,7 @@ void start_new_application(void *sp, void *pc)
: "l" (sp), "l" (pc)
: "r2", "cc", "memory"
);
#endif
}
#else

3
platform/mbed_application.h
View File

@ -19,7 +19,8 @@
#include<stdint.h>
#if defined(__CORTEX_M3) || defined(__CORTEX_M4) || defined(__CORTEX_M7)
#if defined(__CORTEX_M3) || defined(__CORTEX_M4) || defined(__CORTEX_M7)\
|| defined(__CORTEX_M23)
#define MBED_APPLICATION_SUPPORT 1
#else
#define MBED_APPLICATION_SUPPORT 0