X-Git-Url: https://review.openocd.org/gitweb?a=blobdiff_plain;f=src%2Ftarget%2Fcortex_m3.c;h=2a58f5bf0d6201f801737acbb584d7665bb7b52e;hb=f0c0256b1f05a04a58d857e9d865a0be0dd1680d;hp=a3b3d425a9b2dabb2e7ea85f7aee7908a2db47a2;hpb=1aac72d24339380f6e98c50dec4c96ab30537749;p=openocd.git diff --git a/src/target/cortex_m3.c b/src/target/cortex_m3.c index a3b3d425a9..2a58f5bf0d 100644 --- a/src/target/cortex_m3.c +++ b/src/target/cortex_m3.c @@ -38,7 +38,7 @@ #include "arm_disassembler.h" #include "register.h" #include "arm_opcodes.h" - +#include "arm_semihosting.h" /* NOTE: most of this should work fine for the Cortex-M1 and * Cortex-M0 cores too, although they're ARMv6-M not ARMv7-M. @@ -59,7 +59,7 @@ static void cortex_m3_enable_watchpoints(struct target *target); static int cortex_m3_store_core_reg_u32(struct target *target, enum armv7m_regtype type, uint32_t num, uint32_t value); -static int cortexm3_dap_read_coreregister_u32(struct swjdp_common *swjdp, +static int cortexm3_dap_read_coreregister_u32(struct adiv5_dap *swjdp, uint32_t *value, int regnum) { int retval; @@ -68,19 +68,29 @@ static int cortexm3_dap_read_coreregister_u32(struct swjdp_common *swjdp, /* because the DCB_DCRDR is used for the emulated dcc channel * we have to save/restore the DCB_DCRDR when used */ - mem_ap_read_u32(swjdp, DCB_DCRDR, &dcrdr); - - swjdp->trans_mode = TRANS_MODE_COMPOSITE; + retval = mem_ap_read_u32(swjdp, DCB_DCRDR, &dcrdr); + if (retval != ERROR_OK) + return retval; /* mem_ap_write_u32(swjdp, DCB_DCRSR, regnum); */ - dap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, DCB_DCRSR & 0xFFFFFFF0); - dap_ap_write_reg_u32(swjdp, AP_REG_BD0 | (DCB_DCRSR & 0xC), regnum); + retval = dap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, DCB_DCRSR & 0xFFFFFFF0); + if (retval != ERROR_OK) + return retval; + retval = dap_queue_ap_write(swjdp, AP_REG_BD0 | (DCB_DCRSR & 0xC), regnum); + if (retval != ERROR_OK) + return retval; /* mem_ap_read_u32(swjdp, DCB_DCRDR, value); */ - dap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, DCB_DCRDR & 0xFFFFFFF0); - dap_ap_read_reg_u32(swjdp, AP_REG_BD0 | (DCB_DCRDR & 0xC), value); + retval = dap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, DCB_DCRDR & 0xFFFFFFF0); + if (retval != ERROR_OK) + return retval; + retval = dap_queue_ap_read(swjdp, AP_REG_BD0 | (DCB_DCRDR & 0xC), value); + if (retval != ERROR_OK) + return retval; - retval = jtagdp_transaction_endcheck(swjdp); + retval = dap_run(swjdp); + if (retval != ERROR_OK) + return retval; /* restore DCB_DCRDR - this needs to be in a seperate * transaction otherwise the emulated DCC channel breaks */ @@ -90,7 +100,7 @@ static int cortexm3_dap_read_coreregister_u32(struct swjdp_common *swjdp, return retval; } -static int cortexm3_dap_write_coreregister_u32(struct swjdp_common *swjdp, +static int cortexm3_dap_write_coreregister_u32(struct adiv5_dap *swjdp, uint32_t value, int regnum) { int retval; @@ -99,19 +109,25 @@ static int cortexm3_dap_write_coreregister_u32(struct swjdp_common *swjdp, /* because the DCB_DCRDR is used for the emulated dcc channel * we have to save/restore the DCB_DCRDR when used */ - mem_ap_read_u32(swjdp, DCB_DCRDR, &dcrdr); - - swjdp->trans_mode = TRANS_MODE_COMPOSITE; + retval = mem_ap_read_u32(swjdp, DCB_DCRDR, &dcrdr); + if (retval != ERROR_OK) + return retval; /* mem_ap_write_u32(swjdp, DCB_DCRDR, core_regs[i]); */ - dap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, DCB_DCRDR & 0xFFFFFFF0); - dap_ap_write_reg_u32(swjdp, AP_REG_BD0 | (DCB_DCRDR & 0xC), value); + retval = dap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, DCB_DCRDR & 0xFFFFFFF0); + if (retval != ERROR_OK) + return retval; + retval = dap_queue_ap_write(swjdp, AP_REG_BD0 | (DCB_DCRDR & 0xC), value); + // XXX check retval /* mem_ap_write_u32(swjdp, DCB_DCRSR, i | DCRSR_WnR); */ - dap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, DCB_DCRSR & 0xFFFFFFF0); - dap_ap_write_reg_u32(swjdp, AP_REG_BD0 | (DCB_DCRSR & 0xC), regnum | DCRSR_WnR); + retval = dap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, DCB_DCRSR & 0xFFFFFFF0); + if (retval != ERROR_OK) + return retval; + retval = dap_queue_ap_write(swjdp, AP_REG_BD0 | (DCB_DCRSR & 0xC), regnum | DCRSR_WnR); + // XXX check retval - retval = jtagdp_transaction_endcheck(swjdp); + retval = dap_run(swjdp); /* restore DCB_DCRDR - this needs to be in a seperate * transaction otherwise the emulated DCC channel breaks */ @@ -125,7 +141,7 @@ static int cortex_m3_write_debug_halt_mask(struct target *target, uint32_t mask_on, uint32_t mask_off) { struct cortex_m3_common *cortex_m3 = target_to_cm3(target); - struct swjdp_common *swjdp = &cortex_m3->armv7m.swjdp_info; + struct adiv5_dap *swjdp = &cortex_m3->armv7m.dap; /* mask off status bits */ cortex_m3->dcb_dhcsr &= ~((0xFFFF << 16) | mask_off); @@ -138,16 +154,21 @@ static int cortex_m3_write_debug_halt_mask(struct target *target, static int cortex_m3_clear_halt(struct target *target) { struct cortex_m3_common *cortex_m3 = target_to_cm3(target); - struct swjdp_common *swjdp = &cortex_m3->armv7m.swjdp_info; + struct adiv5_dap *swjdp = &cortex_m3->armv7m.dap; + int retval; /* clear step if any */ cortex_m3_write_debug_halt_mask(target, C_HALT, C_STEP); /* Read Debug Fault Status Register */ - mem_ap_read_atomic_u32(swjdp, NVIC_DFSR, &cortex_m3->nvic_dfsr); + retval = mem_ap_read_atomic_u32(swjdp, NVIC_DFSR, &cortex_m3->nvic_dfsr); + if (retval != ERROR_OK) + return retval; /* Clear Debug Fault Status */ - mem_ap_write_atomic_u32(swjdp, NVIC_DFSR, cortex_m3->nvic_dfsr); + retval = mem_ap_write_atomic_u32(swjdp, NVIC_DFSR, cortex_m3->nvic_dfsr); + if (retval != ERROR_OK) + return retval; LOG_DEBUG(" NVIC_DFSR 0x%" PRIx32 "", cortex_m3->nvic_dfsr); return ERROR_OK; @@ -156,8 +177,9 @@ static int cortex_m3_clear_halt(struct target *target) static int cortex_m3_single_step_core(struct target *target) { struct cortex_m3_common *cortex_m3 = target_to_cm3(target); - struct swjdp_common *swjdp = &cortex_m3->armv7m.swjdp_info; + struct adiv5_dap *swjdp = &cortex_m3->armv7m.dap; uint32_t dhcsr_save; + int retval; /* backup dhcsr reg */ dhcsr_save = cortex_m3->dcb_dhcsr; @@ -167,10 +189,16 @@ static int cortex_m3_single_step_core(struct target *target) * HALT can put the core into an unknown state. */ if (!(cortex_m3->dcb_dhcsr & C_MASKINTS)) - mem_ap_write_atomic_u32(swjdp, DCB_DHCSR, + { + retval = mem_ap_write_atomic_u32(swjdp, DCB_DHCSR, DBGKEY | C_MASKINTS | C_HALT | C_DEBUGEN); - mem_ap_write_atomic_u32(swjdp, DCB_DHCSR, + if (retval != ERROR_OK) + return retval; + } + retval = mem_ap_write_atomic_u32(swjdp, DCB_DHCSR, DBGKEY | C_MASKINTS | C_STEP | C_DEBUGEN); + if (retval != ERROR_OK) + return retval; LOG_DEBUG(" "); /* restore dhcsr reg */ @@ -183,24 +211,35 @@ static int cortex_m3_single_step_core(struct target *target) static int cortex_m3_endreset_event(struct target *target) { int i; + int retval; uint32_t dcb_demcr; struct cortex_m3_common *cortex_m3 = target_to_cm3(target); struct armv7m_common *armv7m = &cortex_m3->armv7m; - struct swjdp_common *swjdp = &cortex_m3->armv7m.swjdp_info; + struct adiv5_dap *swjdp = &cortex_m3->armv7m.dap; struct cortex_m3_fp_comparator *fp_list = cortex_m3->fp_comparator_list; struct cortex_m3_dwt_comparator *dwt_list = cortex_m3->dwt_comparator_list; /* REVISIT The four debug monitor bits are currently ignored... */ - mem_ap_read_atomic_u32(swjdp, DCB_DEMCR, &dcb_demcr); + retval = mem_ap_read_atomic_u32(swjdp, DCB_DEMCR, &dcb_demcr); + if (retval != ERROR_OK) + return retval; LOG_DEBUG("DCB_DEMCR = 0x%8.8" PRIx32 "",dcb_demcr); /* this register is used for emulated dcc channel */ - mem_ap_write_u32(swjdp, DCB_DCRDR, 0); + retval = mem_ap_write_u32(swjdp, DCB_DCRDR, 0); + if (retval != ERROR_OK) + return retval; /* Enable debug requests */ - mem_ap_read_atomic_u32(swjdp, DCB_DHCSR, &cortex_m3->dcb_dhcsr); + retval = mem_ap_read_atomic_u32(swjdp, DCB_DHCSR, &cortex_m3->dcb_dhcsr); + if (retval != ERROR_OK) + return retval; if (!(cortex_m3->dcb_dhcsr & C_DEBUGEN)) - mem_ap_write_u32(swjdp, DCB_DHCSR, DBGKEY | C_DEBUGEN); + { + retval = mem_ap_write_u32(swjdp, DCB_DHCSR, DBGKEY | C_DEBUGEN); + if (retval != ERROR_OK) + return retval; + } /* clear any interrupt masking */ cortex_m3_write_debug_halt_mask(target, 0, C_MASKINTS); @@ -212,40 +251,55 @@ static int cortex_m3_endreset_event(struct target *target) * choices *EXCEPT* explicitly scripted overrides like "vector_catch" * or manual updates to the NVIC SHCSR and CCR registers. */ - mem_ap_write_u32(swjdp, DCB_DEMCR, TRCENA | armv7m->demcr); + retval = mem_ap_write_u32(swjdp, DCB_DEMCR, TRCENA | armv7m->demcr); + if (retval != ERROR_OK) + return retval; /* Paranoia: evidently some (early?) chips don't preserve all the * debug state (including FBP, DWT, etc) across reset... */ /* Enable FPB */ - target_write_u32(target, FP_CTRL, 3); + retval = target_write_u32(target, FP_CTRL, 3); + if (retval != ERROR_OK) + return retval; + cortex_m3->fpb_enabled = 1; /* Restore FPB registers */ for (i = 0; i < cortex_m3->fp_num_code + cortex_m3->fp_num_lit; i++) { - target_write_u32(target, fp_list[i].fpcr_address, fp_list[i].fpcr_value); + retval = target_write_u32(target, fp_list[i].fpcr_address, fp_list[i].fpcr_value); + if (retval != ERROR_OK) + return retval; } /* Restore DWT registers */ for (i = 0; i < cortex_m3->dwt_num_comp; i++) { - target_write_u32(target, dwt_list[i].dwt_comparator_address + 0, + retval = target_write_u32(target, dwt_list[i].dwt_comparator_address + 0, dwt_list[i].comp); - target_write_u32(target, dwt_list[i].dwt_comparator_address + 4, + if (retval != ERROR_OK) + return retval; + retval = target_write_u32(target, dwt_list[i].dwt_comparator_address + 4, dwt_list[i].mask); - target_write_u32(target, dwt_list[i].dwt_comparator_address + 8, + if (retval != ERROR_OK) + return retval; + retval = target_write_u32(target, dwt_list[i].dwt_comparator_address + 8, dwt_list[i].function); + if (retval != ERROR_OK) + return retval; } - jtagdp_transaction_endcheck(swjdp); + retval = dap_run(swjdp); + if (retval != ERROR_OK) + return retval; register_cache_invalidate(cortex_m3->armv7m.core_cache); /* make sure we have latest dhcsr flags */ - mem_ap_read_atomic_u32(swjdp, DCB_DHCSR, &cortex_m3->dcb_dhcsr); + retval = mem_ap_read_atomic_u32(swjdp, DCB_DHCSR, &cortex_m3->dcb_dhcsr); - return ERROR_OK; + return retval; } static int cortex_m3_examine_debug_reason(struct target *target) @@ -279,35 +333,54 @@ static int cortex_m3_examine_exception_reason(struct target *target) { uint32_t shcsr, except_sr, cfsr = -1, except_ar = -1; struct armv7m_common *armv7m = target_to_armv7m(target); - struct swjdp_common *swjdp = &armv7m->swjdp_info; + struct adiv5_dap *swjdp = &armv7m->dap; + int retval; - mem_ap_read_u32(swjdp, NVIC_SHCSR, &shcsr); + retval = mem_ap_read_u32(swjdp, NVIC_SHCSR, &shcsr); + if (retval != ERROR_OK) + return retval; switch (armv7m->exception_number) { case 2: /* NMI */ break; case 3: /* Hard Fault */ - mem_ap_read_atomic_u32(swjdp, NVIC_HFSR, &except_sr); + retval = mem_ap_read_atomic_u32(swjdp, NVIC_HFSR, &except_sr); + if (retval != ERROR_OK) + return retval; if (except_sr & 0x40000000) { - mem_ap_read_u32(swjdp, NVIC_CFSR, &cfsr); + retval = mem_ap_read_u32(swjdp, NVIC_CFSR, &cfsr); + if (retval != ERROR_OK) + return retval; } break; case 4: /* Memory Management */ - mem_ap_read_u32(swjdp, NVIC_CFSR, &except_sr); - mem_ap_read_u32(swjdp, NVIC_MMFAR, &except_ar); + retval = mem_ap_read_u32(swjdp, NVIC_CFSR, &except_sr); + if (retval != ERROR_OK) + return retval; + retval = mem_ap_read_u32(swjdp, NVIC_MMFAR, &except_ar); + if (retval != ERROR_OK) + return retval; break; case 5: /* Bus Fault */ - mem_ap_read_u32(swjdp, NVIC_CFSR, &except_sr); - mem_ap_read_u32(swjdp, NVIC_BFAR, &except_ar); + retval = mem_ap_read_u32(swjdp, NVIC_CFSR, &except_sr); + if (retval != ERROR_OK) + return retval; + retval = mem_ap_read_u32(swjdp, NVIC_BFAR, &except_ar); + if (retval != ERROR_OK) + return retval; break; case 6: /* Usage Fault */ - mem_ap_read_u32(swjdp, NVIC_CFSR, &except_sr); + retval = mem_ap_read_u32(swjdp, NVIC_CFSR, &except_sr); + if (retval != ERROR_OK) + return retval; break; case 11: /* SVCall */ break; case 12: /* Debug Monitor */ - mem_ap_read_u32(swjdp, NVIC_DFSR, &except_sr); + retval = mem_ap_read_u32(swjdp, NVIC_DFSR, &except_sr); + if (retval != ERROR_OK) + return retval; break; case 14: /* PendSV */ break; @@ -317,10 +390,13 @@ static int cortex_m3_examine_exception_reason(struct target *target) except_sr = 0; break; } - jtagdp_transaction_endcheck(swjdp); - LOG_DEBUG("%s SHCSR 0x%" PRIx32 ", SR 0x%" PRIx32 ", CFSR 0x%" PRIx32 ", AR 0x%" PRIx32 "", armv7m_exception_string(armv7m->exception_number), \ - shcsr, except_sr, cfsr, except_ar); - return ERROR_OK; + retval = dap_run(swjdp); + if (retval == ERROR_OK) + LOG_DEBUG("%s SHCSR 0x%" PRIx32 ", SR 0x%" PRIx32 + ", CFSR 0x%" PRIx32 ", AR 0x%" PRIx32, + armv7m_exception_string(armv7m->exception_number), + shcsr, except_sr, cfsr, except_ar); + return retval; } /* PSP is used in some thread modes */ @@ -349,13 +425,15 @@ static int cortex_m3_debug_entry(struct target *target) struct cortex_m3_common *cortex_m3 = target_to_cm3(target); struct armv7m_common *armv7m = &cortex_m3->armv7m; struct arm *arm = &armv7m->arm; - struct swjdp_common *swjdp = &armv7m->swjdp_info; + struct adiv5_dap *swjdp = &armv7m->dap; struct reg *r; LOG_DEBUG(" "); cortex_m3_clear_halt(target); - mem_ap_read_atomic_u32(swjdp, DCB_DHCSR, &cortex_m3->dcb_dhcsr); + retval = mem_ap_read_atomic_u32(swjdp, DCB_DHCSR, &cortex_m3->dcb_dhcsr); + if (retval != ERROR_OK) + return retval; if ((retval = armv7m->examine_debug_reason(target)) != ERROR_OK) return retval; @@ -431,7 +509,11 @@ static int cortex_m3_debug_entry(struct target *target) target_state_name(target)); if (armv7m->post_debug_entry) - armv7m->post_debug_entry(target); + { + retval = armv7m->post_debug_entry(target); + if (retval != ERROR_OK) + return retval; + } return ERROR_OK; } @@ -441,7 +523,7 @@ static int cortex_m3_poll(struct target *target) int retval; enum target_state prev_target_state = target->state; struct cortex_m3_common *cortex_m3 = target_to_cm3(target); - struct swjdp_common *swjdp = &cortex_m3->armv7m.swjdp_info; + struct adiv5_dap *swjdp = &cortex_m3->armv7m.dap; /* Read from Debug Halting Control and Status Register */ retval = mem_ap_read_atomic_u32(swjdp, DCB_DHCSR, &cortex_m3->dcb_dhcsr); @@ -463,13 +545,17 @@ static int cortex_m3_poll(struct target *target) target->debug_reason = DBG_REASON_DBGRQ; /* refresh status bits */ - mem_ap_read_atomic_u32(swjdp, DCB_DHCSR, &cortex_m3->dcb_dhcsr); + retval = mem_ap_read_atomic_u32(swjdp, DCB_DHCSR, &cortex_m3->dcb_dhcsr); + if (retval != ERROR_OK) + return retval; } if (cortex_m3->dcb_dhcsr & S_RESET_ST) { /* check if still in reset */ - mem_ap_read_atomic_u32(swjdp, DCB_DHCSR, &cortex_m3->dcb_dhcsr); + retval = mem_ap_read_atomic_u32(swjdp, DCB_DHCSR, &cortex_m3->dcb_dhcsr); + if (retval != ERROR_OK) + return retval; if (cortex_m3->dcb_dhcsr & S_RESET_ST) { @@ -499,6 +585,9 @@ static int cortex_m3_poll(struct target *target) if ((retval = cortex_m3_debug_entry(target)) != ERROR_OK) return retval; + if (arm_semihosting(target, &retval) != 0) + return retval; + target_call_event_callbacks(target, TARGET_EVENT_HALTED); } if (prev_target_state == TARGET_DEBUG_RUNNING) @@ -573,17 +662,21 @@ static int cortex_m3_halt(struct target *target) static int cortex_m3_soft_reset_halt(struct target *target) { struct cortex_m3_common *cortex_m3 = target_to_cm3(target); - struct swjdp_common *swjdp = &cortex_m3->armv7m.swjdp_info; + struct adiv5_dap *swjdp = &cortex_m3->armv7m.dap; uint32_t dcb_dhcsr = 0; int retval, timeout = 0; /* Enter debug state on reset; restore DEMCR in endreset_event() */ - mem_ap_write_u32(swjdp, DCB_DEMCR, + retval = mem_ap_write_u32(swjdp, DCB_DEMCR, TRCENA | VC_HARDERR | VC_BUSERR | VC_CORERESET); + if (retval != ERROR_OK) + return retval; /* Request a core-only reset */ - mem_ap_write_atomic_u32(swjdp, NVIC_AIRCR, + retval = mem_ap_write_atomic_u32(swjdp, NVIC_AIRCR, AIRCR_VECTKEY | AIRCR_VECTRESET); + if (retval != ERROR_OK) + return retval; target->state = TARGET_RESET; /* registers are now invalid */ @@ -594,8 +687,10 @@ static int cortex_m3_soft_reset_halt(struct target *target) retval = mem_ap_read_atomic_u32(swjdp, DCB_DHCSR, &dcb_dhcsr); if (retval == ERROR_OK) { - mem_ap_read_atomic_u32(swjdp, NVIC_DFSR, + retval = mem_ap_read_atomic_u32(swjdp, NVIC_DFSR, &cortex_m3->nvic_dfsr); + if (retval != ERROR_OK) + return retval; if ((dcb_dhcsr & S_HALT) && (cortex_m3->nvic_dfsr & DFSR_VCATCH)) { @@ -747,7 +842,7 @@ static int cortex_m3_step(struct target *target, int current, { struct cortex_m3_common *cortex_m3 = target_to_cm3(target); struct armv7m_common *armv7m = &cortex_m3->armv7m; - struct swjdp_common *swjdp = &armv7m->swjdp_info; + struct adiv5_dap *swjdp = &armv7m->dap; struct breakpoint *breakpoint = NULL; struct reg *pc = armv7m->arm.pc; bool bkpt_inst_found = false; @@ -787,7 +882,10 @@ static int cortex_m3_step(struct target *target, int current, cortex_m3_write_debug_halt_mask(target, C_STEP, C_HALT); } - mem_ap_read_atomic_u32(swjdp, DCB_DHCSR, &cortex_m3->dcb_dhcsr); + int retval; + retval = mem_ap_read_atomic_u32(swjdp, DCB_DHCSR, &cortex_m3->dcb_dhcsr); + if (retval != ERROR_OK) + return retval; /* registers are now invalid */ register_cache_invalidate(cortex_m3->armv7m.core_cache); @@ -799,7 +897,9 @@ static int cortex_m3_step(struct target *target, int current, " nvic_icsr = 0x%" PRIx32, cortex_m3->dcb_dhcsr, cortex_m3->nvic_icsr); - cortex_m3_debug_entry(target); + retval = cortex_m3_debug_entry(target); + if (retval != ERROR_OK) + return retval; target_call_event_callbacks(target, TARGET_EVENT_HALTED); LOG_DEBUG("target stepped dcb_dhcsr = 0x%" PRIx32 @@ -812,7 +912,7 @@ static int cortex_m3_step(struct target *target, int current, static int cortex_m3_assert_reset(struct target *target) { struct cortex_m3_common *cortex_m3 = target_to_cm3(target); - struct swjdp_common *swjdp = &cortex_m3->armv7m.swjdp_info; + struct adiv5_dap *swjdp = &cortex_m3->armv7m.dap; int assert_srst = 1; LOG_DEBUG("target->state: %s", @@ -829,18 +929,31 @@ static int cortex_m3_assert_reset(struct target *target) assert_srst = 0; /* Enable debug requests */ - mem_ap_read_atomic_u32(swjdp, DCB_DHCSR, &cortex_m3->dcb_dhcsr); + int retval; + retval = mem_ap_read_atomic_u32(swjdp, DCB_DHCSR, &cortex_m3->dcb_dhcsr); + if (retval != ERROR_OK) + return retval; if (!(cortex_m3->dcb_dhcsr & C_DEBUGEN)) - mem_ap_write_u32(swjdp, DCB_DHCSR, DBGKEY | C_DEBUGEN); + { + retval = mem_ap_write_u32(swjdp, DCB_DHCSR, DBGKEY | C_DEBUGEN); + if (retval != ERROR_OK) + return retval; + } - mem_ap_write_u32(swjdp, DCB_DCRDR, 0); + retval = mem_ap_write_u32(swjdp, DCB_DCRDR, 0); + if (retval != ERROR_OK) + return retval; if (!target->reset_halt) { /* Set/Clear C_MASKINTS in a separate operation */ if (cortex_m3->dcb_dhcsr & C_MASKINTS) - mem_ap_write_atomic_u32(swjdp, DCB_DHCSR, + { + retval = mem_ap_write_atomic_u32(swjdp, DCB_DHCSR, DBGKEY | C_DEBUGEN | C_HALT); + if (retval != ERROR_OK) + return retval; + } /* clear any debug flags before resuming */ cortex_m3_clear_halt(target); @@ -856,8 +969,10 @@ static int cortex_m3_assert_reset(struct target *target) * bad vector table entries. Should this include MMERR or * other flags too? */ - mem_ap_write_atomic_u32(swjdp, DCB_DEMCR, + retval = mem_ap_write_atomic_u32(swjdp, DCB_DEMCR, TRCENA | VC_HARDERR | VC_BUSERR | VC_CORERESET); + if (retval != ERROR_OK) + return retval; } /* @@ -921,8 +1036,10 @@ static int cortex_m3_assert_reset(struct target *target) * core, like watchdog timers, if the SoC wires it up * correctly. Else VECRESET can reset just the core. */ - mem_ap_write_atomic_u32(swjdp, NVIC_AIRCR, + retval = mem_ap_write_atomic_u32(swjdp, NVIC_AIRCR, AIRCR_VECTKEY | AIRCR_SYSRESETREQ); + if (retval != ERROR_OK) + return retval; LOG_DEBUG("Using Cortex-M3 SYSRESETREQ"); { @@ -931,7 +1048,9 @@ static int cortex_m3_assert_reset(struct target *target) * after reset) on LM3S6918 -- Michael Schwingen */ uint32_t tmp; - mem_ap_read_atomic_u32(swjdp, NVIC_AIRCR, &tmp); + retval = mem_ap_read_atomic_u32(swjdp, NVIC_AIRCR, &tmp); + if (retval != ERROR_OK) + return retval; } } @@ -942,7 +1061,6 @@ static int cortex_m3_assert_reset(struct target *target) if (target->reset_halt) { - int retval; if ((retval = target_halt(target)) != ERROR_OK) return retval; } @@ -1362,7 +1480,7 @@ static int cortex_m3_load_core_reg_u32(struct target *target, { int retval; struct armv7m_common *armv7m = target_to_armv7m(target); - struct swjdp_common *swjdp = &armv7m->swjdp_info; + struct adiv5_dap *swjdp = &armv7m->dap; /* NOTE: we "know" here that the register identifiers used * in the v7m header match the Cortex-M3 Debug Core Register @@ -1426,7 +1544,7 @@ static int cortex_m3_store_core_reg_u32(struct target *target, int retval; uint32_t reg; struct armv7m_common *armv7m = target_to_armv7m(target); - struct swjdp_common *swjdp = &armv7m->swjdp_info; + struct adiv5_dap *swjdp = &armv7m->dap; #ifdef ARMV7_GDB_HACKS /* If the LR register is being modified, make sure it will put us @@ -1504,7 +1622,7 @@ static int cortex_m3_read_memory(struct target *target, uint32_t address, uint32_t size, uint32_t count, uint8_t *buffer) { struct armv7m_common *armv7m = target_to_armv7m(target); - struct swjdp_common *swjdp = &armv7m->swjdp_info; + struct adiv5_dap *swjdp = &armv7m->dap; int retval = ERROR_INVALID_ARGUMENTS; /* cortex_m3 handles unaligned memory access */ @@ -1529,7 +1647,7 @@ static int cortex_m3_write_memory(struct target *target, uint32_t address, uint32_t size, uint32_t count, uint8_t *buffer) { struct armv7m_common *armv7m = target_to_armv7m(target); - struct swjdp_common *swjdp = &armv7m->swjdp_info; + struct adiv5_dap *swjdp = &armv7m->dap; int retval = ERROR_INVALID_ARGUMENTS; if (count && buffer) { @@ -1710,7 +1828,7 @@ static int cortex_m3_examine(struct target *target) uint32_t cpuid, fpcr; int i; struct cortex_m3_common *cortex_m3 = target_to_cm3(target); - struct swjdp_common *swjdp = &cortex_m3->armv7m.swjdp_info; + struct adiv5_dap *swjdp = &cortex_m3->armv7m.dap; if ((retval = ahbap_debugport_init(swjdp)) != ERROR_OK) return retval; @@ -1759,9 +1877,10 @@ static int cortex_m3_examine(struct target *target) return ERROR_OK; } -static int cortex_m3_dcc_read(struct swjdp_common *swjdp, uint8_t *value, uint8_t *ctrl) +static int cortex_m3_dcc_read(struct adiv5_dap *swjdp, uint8_t *value, uint8_t *ctrl) { uint16_t dcrdr; + int retval; mem_ap_read_buf_u16(swjdp, (uint8_t*)&dcrdr, 1, DCB_DCRDR); *ctrl = (uint8_t)dcrdr; @@ -1774,7 +1893,9 @@ static int cortex_m3_dcc_read(struct swjdp_common *swjdp, uint8_t *value, uint8_ if (dcrdr & (1 << 0)) { dcrdr = 0; - mem_ap_write_buf_u16(swjdp, (uint8_t*)&dcrdr, 1, DCB_DCRDR); + retval = mem_ap_write_buf_u16(swjdp, (uint8_t*)&dcrdr, 1, DCB_DCRDR); + if (retval != ERROR_OK) + return retval; } return ERROR_OK; @@ -1784,7 +1905,7 @@ static int cortex_m3_target_request_data(struct target *target, uint32_t size, uint8_t *buffer) { struct armv7m_common *armv7m = target_to_armv7m(target); - struct swjdp_common *swjdp = &armv7m->swjdp_info; + struct adiv5_dap *swjdp = &armv7m->dap; uint8_t data; uint8_t ctrl; uint32_t i; @@ -1804,7 +1925,7 @@ static int cortex_m3_handle_target_request(void *priv) if (!target_was_examined(target)) return ERROR_OK; struct armv7m_common *armv7m = target_to_armv7m(target); - struct swjdp_common *swjdp = &armv7m->swjdp_info; + struct adiv5_dap *swjdp = &armv7m->dap; if (!target->dbg_msg_enabled) return ERROR_OK; @@ -1848,12 +1969,13 @@ static int cortex_m3_init_arch_info(struct target *target, cortex_m3->jtag_info.tap = tap; cortex_m3->jtag_info.scann_size = 4; - armv7m->swjdp_info.dp_select_value = -1; - armv7m->swjdp_info.ap_csw_value = -1; - armv7m->swjdp_info.ap_tar_value = -1; - armv7m->swjdp_info.jtag_info = &cortex_m3->jtag_info; - armv7m->swjdp_info.memaccess_tck = 8; - armv7m->swjdp_info.tar_autoincr_block = (1 << 12); /* Cortex-M3 has 4096 bytes autoincrement range */ + armv7m->arm.dap = &armv7m->dap; + + /* Leave (only) generic DAP stuff for debugport_init(); */ + armv7m->dap.jtag_info = &cortex_m3->jtag_info; + armv7m->dap.memaccess_tck = 8; + /* Cortex-M3 has 4096 bytes autoincrement range */ + armv7m->dap.tar_autoincr_block = (1 << 12); /* register arch-specific functions */ armv7m->examine_debug_reason = cortex_m3_examine_debug_reason; @@ -1861,7 +1983,6 @@ static int cortex_m3_init_arch_info(struct target *target, armv7m->post_debug_entry = NULL; armv7m->pre_restore_context = NULL; - armv7m->post_restore_context = NULL; armv7m->load_core_reg_u32 = cortex_m3_load_core_reg_u32; armv7m->store_core_reg_u32 = cortex_m3_store_core_reg_u32; @@ -1904,50 +2025,6 @@ static int cortex_m3_verify_pointer(struct command_context *cmd_ctx, * cortexm3_target structure, which is only used with CM3 targets. */ -/* - * REVISIT Thumb2 disassembly should work for all ARMv7 cores, as well - * as at least ARM-1156T2. The interesting thing about Cortex-M is - * that *only* Thumb2 disassembly matters. There are also some small - * additions to Thumb2 that are specific to ARMv7-M. - */ -COMMAND_HANDLER(handle_cortex_m3_disassemble_command) -{ - int retval; - struct target *target = get_current_target(CMD_CTX); - struct cortex_m3_common *cortex_m3 = target_to_cm3(target); - uint32_t address; - unsigned long count = 1; - struct arm_instruction cur_instruction; - - retval = cortex_m3_verify_pointer(CMD_CTX, cortex_m3); - if (retval != ERROR_OK) - return retval; - - errno = 0; - switch (CMD_ARGC) { - case 2: - COMMAND_PARSE_NUMBER(ulong, CMD_ARGV[1], count); - /* FALL THROUGH */ - case 1: - COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], address); - break; - default: - command_print(CMD_CTX, - "usage: cortex_m3 disassemble
[]"); - return ERROR_OK; - } - - while (count--) { - retval = thumb2_opcode(target, address, &cur_instruction); - if (retval != ERROR_OK) - return retval; - command_print(CMD_CTX, "%s", cur_instruction.text); - address += cur_instruction.instruction_size; - } - - return ERROR_OK; -} - static const struct { char name[10]; unsigned mask; @@ -1967,7 +2044,7 @@ COMMAND_HANDLER(handle_cortex_m3_vector_catch_command) struct target *target = get_current_target(CMD_CTX); struct cortex_m3_common *cortex_m3 = target_to_cm3(target); struct armv7m_common *armv7m = &cortex_m3->armv7m; - struct swjdp_common *swjdp = &armv7m->swjdp_info; + struct adiv5_dap *swjdp = &armv7m->dap; uint32_t demcr = 0; int retval; @@ -1975,7 +2052,9 @@ COMMAND_HANDLER(handle_cortex_m3_vector_catch_command) if (retval != ERROR_OK) return retval; - mem_ap_read_atomic_u32(swjdp, DCB_DEMCR, &demcr); + retval = mem_ap_read_atomic_u32(swjdp, DCB_DEMCR, &demcr); + if (retval != ERROR_OK) + return retval; if (CMD_ARGC > 0) { unsigned catch = 0; @@ -2011,8 +2090,12 @@ write: demcr |= catch; /* write, but don't assume it stuck (why not??) */ - mem_ap_write_u32(swjdp, DCB_DEMCR, demcr); - mem_ap_read_atomic_u32(swjdp, DCB_DEMCR, &demcr); + retval = mem_ap_write_u32(swjdp, DCB_DEMCR, demcr); + if (retval != ERROR_OK) + return retval; + retval = mem_ap_read_atomic_u32(swjdp, DCB_DEMCR, &demcr); + if (retval != ERROR_OK) + return retval; /* FIXME be sure to clear DEMCR on clean server shutdown. * Otherwise the vector catch hardware could fire when there's @@ -2061,13 +2144,6 @@ COMMAND_HANDLER(handle_cortex_m3_mask_interrupts_command) } static const struct command_registration cortex_m3_exec_command_handlers[] = { - { - .name = "disassemble", - .handler = handle_cortex_m3_disassemble_command, - .mode = COMMAND_EXEC, - .help = "disassemble Thumb2 instructions", - .usage = "address [count]", - }, { .name = "maskisr", .handler = handle_cortex_m3_mask_interrupts_command,