diff options
Diffstat (limited to 'src/target/cortex_m3.c')
| -rw-r--r-- | src/target/cortex_m3.c | 83 |
1 files changed, 43 insertions, 40 deletions
diff --git a/src/target/cortex_m3.c b/src/target/cortex_m3.c index d97d912c..f94250b8 100644 --- a/src/target/cortex_m3.c +++ b/src/target/cortex_m3.c @@ -1357,50 +1357,53 @@ int cortex_m3_examine(struct target_s *target) cortex_m3_common_t *cortex_m3 = armv7m->arch_info; swjdp_common_t *swjdp = &cortex_m3->swjdp_info; - target->type->examined = 1; - - if ((retval=ahbap_debugport_init(swjdp))!=ERROR_OK) - return retval; - - /* Read from Device Identification Registers */ - if ((retval=target_read_u32(target, CPUID, &cpuid))!=ERROR_OK) + if ((retval = ahbap_debugport_init(swjdp)) != ERROR_OK) return retval; - if (((cpuid >> 4) & 0xc3f) == 0xc23) - LOG_DEBUG("CORTEX-M3 processor detected"); - LOG_DEBUG("cpuid: 0x%8.8x", cpuid); - - target_read_u32(target, NVIC_ICTR, &ictr); - cortex_m3->intlinesnum = (ictr & 0x1F) + 1; - cortex_m3->intsetenable = calloc(cortex_m3->intlinesnum, 4); - for (i = 0; i < cortex_m3->intlinesnum; i++) - { - target_read_u32(target, NVIC_ISE0 + 4 * i, cortex_m3->intsetenable + i); - LOG_DEBUG("interrupt enable[%i] = 0x%8.8x", i, cortex_m3->intsetenable[i]); - } - - /* Setup FPB */ - target_read_u32(target, FP_CTRL, &fpcr); - cortex_m3->auto_bp_type = 1; - cortex_m3->fp_num_code = (fpcr >> 4) & 0xF; - cortex_m3->fp_num_lit = (fpcr >> 8) & 0xF; - cortex_m3->fp_code_available = cortex_m3->fp_num_code; - cortex_m3->fp_comparator_list = calloc(cortex_m3->fp_num_code + cortex_m3->fp_num_lit, sizeof(cortex_m3_fp_comparator_t)); - for (i = 0; i < cortex_m3->fp_num_code + cortex_m3->fp_num_lit; i++) + if (!target->type->examined) { - cortex_m3->fp_comparator_list[i].type = (i < cortex_m3->fp_num_code) ? FPCR_CODE : FPCR_LITERAL; - cortex_m3->fp_comparator_list[i].fpcr_address = FP_COMP0 + 4 * i; - } - LOG_DEBUG("FPB fpcr 0x%x, numcode %i, numlit %i", fpcr, cortex_m3->fp_num_code, cortex_m3->fp_num_lit); + target->type->examined = 1; - /* Setup DWT */ - target_read_u32(target, DWT_CTRL, &dwtcr); - cortex_m3->dwt_num_comp = (dwtcr >> 28) & 0xF; - cortex_m3->dwt_comp_available = cortex_m3->dwt_num_comp; - cortex_m3->dwt_comparator_list=calloc(cortex_m3->dwt_num_comp, sizeof(cortex_m3_dwt_comparator_t)); - for (i = 0; i < cortex_m3->dwt_num_comp; i++) - { - cortex_m3->dwt_comparator_list[i].dwt_comparator_address = DWT_COMP0 + 0x10 * i; + /* Read from Device Identification Registers */ + if ((retval = target_read_u32(target, CPUID, &cpuid)) != ERROR_OK) + return retval; + + if (((cpuid >> 4) & 0xc3f) == 0xc23) + LOG_DEBUG("CORTEX-M3 processor detected"); + LOG_DEBUG("cpuid: 0x%8.8x", cpuid); + + target_read_u32(target, NVIC_ICTR, &ictr); + cortex_m3->intlinesnum = (ictr & 0x1F) + 1; + cortex_m3->intsetenable = calloc(cortex_m3->intlinesnum, 4); + for (i = 0; i < cortex_m3->intlinesnum; i++) + { + target_read_u32(target, NVIC_ISE0 + 4 * i, cortex_m3->intsetenable + i); + LOG_DEBUG("interrupt enable[%i] = 0x%8.8x", i, cortex_m3->intsetenable[i]); + } + + /* Setup FPB */ + target_read_u32(target, FP_CTRL, &fpcr); + cortex_m3->auto_bp_type = 1; + cortex_m3->fp_num_code = (fpcr >> 4) & 0xF; + cortex_m3->fp_num_lit = (fpcr >> 8) & 0xF; + cortex_m3->fp_code_available = cortex_m3->fp_num_code; + cortex_m3->fp_comparator_list = calloc(cortex_m3->fp_num_code + cortex_m3->fp_num_lit, sizeof(cortex_m3_fp_comparator_t)); + for (i = 0; i < cortex_m3->fp_num_code + cortex_m3->fp_num_lit; i++) + { + cortex_m3->fp_comparator_list[i].type = (i < cortex_m3->fp_num_code) ? FPCR_CODE : FPCR_LITERAL; + cortex_m3->fp_comparator_list[i].fpcr_address = FP_COMP0 + 4 * i; + } + LOG_DEBUG("FPB fpcr 0x%x, numcode %i, numlit %i", fpcr, cortex_m3->fp_num_code, cortex_m3->fp_num_lit); + + /* Setup DWT */ + target_read_u32(target, DWT_CTRL, &dwtcr); + cortex_m3->dwt_num_comp = (dwtcr >> 28) & 0xF; + cortex_m3->dwt_comp_available = cortex_m3->dwt_num_comp; + cortex_m3->dwt_comparator_list = calloc(cortex_m3->dwt_num_comp, sizeof(cortex_m3_dwt_comparator_t)); + for (i = 0; i < cortex_m3->dwt_num_comp; i++) + { + cortex_m3->dwt_comparator_list[i].dwt_comparator_address = DWT_COMP0 + 0x10 * i; + } } return ERROR_OK; |