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tinyriscv-openocd
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Palmer Dabbelt 2017-03-21 12:02:10 -07:00
parent c09ccbcc7c
commit 0c790d385d
2 changed files with 537 additions and 429 deletions
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839
src/target/riscv/debug_defines.h
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File diff suppressed because it is too large Load Diff

127
src/target/riscv/riscv-013.c
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@ -367,7 +367,7 @@ static uint32_t dtmcontrol_scan(struct target *target, uint32_t out)
}
uint32_t in = buf_get_u32(field.in_value, 0, 32);
LOG_DEBUG("DTMCONTROL: 0x%x -> 0x%x", out, in);
LOG_DEBUG("DTMCS: 0x%x -> 0x%x", out, in);
return in;
}
@ -389,7 +389,7 @@ static void increase_dmi_busy_delay(struct target *target)
info->dtmcontrol_idle, info->dmi_busy_delay,
info->ac_busy_delay);
dtmcontrol_scan(target, DTM_DTMCONTROL_DMIRESET);
dtmcontrol_scan(target, DTM_DTMCS_DMIRESET);
}
/**
@ -1462,29 +1462,30 @@ static int examine(struct target *target)
uint32_t dtmcontrol = dtmcontrol_scan(target, 0);
LOG_DEBUG("dtmcontrol=0x%x", dtmcontrol);
LOG_DEBUG(" dmireset=%d", get_field(dtmcontrol, DTM_DTMCONTROL_DMIRESET));
LOG_DEBUG(" idle=%d", get_field(dtmcontrol, DTM_DTMCONTROL_IDLE));
LOG_DEBUG(" dmistat=%d", get_field(dtmcontrol, DTM_DTMCONTROL_DMISTAT));
LOG_DEBUG(" abits=%d", get_field(dtmcontrol, DTM_DTMCONTROL_ABITS));
LOG_DEBUG(" version=%d", get_field(dtmcontrol, DTM_DTMCONTROL_VERSION));
LOG_DEBUG(" dmireset=%d", get_field(dtmcontrol, DTM_DTMCS_DMIRESET));
LOG_DEBUG(" idle=%d", get_field(dtmcontrol, DTM_DTMCS_IDLE));
LOG_DEBUG(" dmistat=%d", get_field(dtmcontrol, DTM_DTMCS_DMISTAT));
LOG_DEBUG(" abits=%d", get_field(dtmcontrol, DTM_DTMCS_ABITS));
LOG_DEBUG(" version=%d", get_field(dtmcontrol, DTM_DTMCS_VERSION));
if (dtmcontrol == 0) {
LOG_ERROR("dtmcontrol is 0. Check JTAG connectivity/board power.");
return ERROR_FAIL;
}
if (get_field(dtmcontrol, DTM_DTMCONTROL_VERSION) != 1) {
if (get_field(dtmcontrol, DTM_DTMCS_VERSION) != 1) {
LOG_ERROR("Unsupported DTM version %d. (dtmcontrol=0x%x)",
get_field(dtmcontrol, DTM_DTMCONTROL_VERSION), dtmcontrol);
get_field(dtmcontrol, DTM_DTMCS_VERSION), dtmcontrol);
return ERROR_FAIL;
}
riscv013_info_t *info = get_info(target);
info->abits = get_field(dtmcontrol, DTM_DTMCONTROL_ABITS);
info->dtmcontrol_idle = get_field(dtmcontrol, DTM_DTMCONTROL_IDLE);
info->abits = get_field(dtmcontrol, DTM_DTMCS_ABITS);
info->dtmcontrol_idle = get_field(dtmcontrol, DTM_DTMCS_IDLE);
uint32_t dmcontrol = dmi_read(target, DMI_DMCONTROL);
if (get_field(dmcontrol, DMI_DMCONTROL_VERSION) != 1) {
LOG_ERROR("OpenOCD only supports Debug Module version 1, not %d "
"(dmcontrol=0x%x)", get_field(dmcontrol, DMI_DMCONTROL_VERSION), dmcontrol);
uint32_t dmstatus = dmi_read(target, DMI_DMSTATUS);
if (get_field(dmstatus, DMI_DMSTATUS_VERSIONLO) != 2) {
LOG_ERROR("OpenOCD only supports Debug Module version 2, not %d "
"(dmstatus=0x%x)", get_field(dmstatus, DMI_DMSTATUS_VERSIONLO), dmstatus);
return ERROR_FAIL;
}
@ -1494,18 +1495,7 @@ static int examine(struct target *target)
dmcontrol = dmi_read(target, DMI_DMCONTROL);
LOG_DEBUG("dmcontrol: 0x%08x", dmcontrol);
LOG_DEBUG(" haltreq=%d", get_field(dmcontrol, DMI_DMCONTROL_HALTREQ));
LOG_DEBUG(" resumereq=%d", get_field(dmcontrol, DMI_DMCONTROL_RESUMEREQ));
LOG_DEBUG(" hartstatus=%d", get_field(dmcontrol, DMI_DMCONTROL_HARTSTATUS));
LOG_DEBUG(" hartsel=0x%x", get_field(dmcontrol, DMI_DMCONTROL_HARTSEL));
LOG_DEBUG(" hartreset=0x%x", get_field(dmcontrol, DMI_DMCONTROL_HARTRESET));
LOG_DEBUG(" dmactive=%d", get_field(dmcontrol, DMI_DMCONTROL_DMACTIVE));
LOG_DEBUG(" reset=%d", get_field(dmcontrol, DMI_DMCONTROL_RESET));
LOG_DEBUG(" authenticated=%d", get_field(dmcontrol, DMI_DMCONTROL_AUTHENTICATED));
LOG_DEBUG(" authbusy=%d", get_field(dmcontrol, DMI_DMCONTROL_AUTHBUSY));
LOG_DEBUG(" version=%d", get_field(dmcontrol, DMI_DMCONTROL_VERSION));
unsigned hartstatus = get_field(dmcontrol, DMI_DMCONTROL_HARTSTATUS);
LOG_DEBUG("dmstatus: 0x%08x", dmstatus);
if (!get_field(dmcontrol, DMI_DMCONTROL_DMACTIVE)) {
LOG_ERROR("Debug Module did not become active. dmcontrol=0x%x",
@ -1513,32 +1503,27 @@ static int examine(struct target *target)
return ERROR_FAIL;
}
if (!get_field(dmcontrol, DMI_DMCONTROL_AUTHENTICATED)) {
if (!get_field(dmstatus, DMI_DMSTATUS_AUTHENTICATED)) {
LOG_ERROR("Authentication required by RISC-V core but not "
"supported by OpenOCD. dmcontrol=0x%x", dmcontrol);
return ERROR_FAIL;
}
if (hartstatus == 2) {
if (get_field(dmstatus, DMI_DMSTATUS_ANYUNAVAIL)) {
LOG_ERROR("The hart is unavailable.");
return ERROR_FAIL;
}
if (hartstatus == 3) {
if (get_field(dmstatus, DMI_DMSTATUS_ANYNONEXISTENT)) {
LOG_ERROR("The hart doesn't exist.");
return ERROR_FAIL;
}
// Check that abstract data registers are accessible.
uint32_t abstractcs = dmi_read(target, DMI_ABSTRACTCS);
info->datacount = get_field(abstractcs, DMI_ABSTRACTCS_DATACOUNT);
LOG_DEBUG("abstractcs=0x%x", abstractcs);
LOG_DEBUG(" datacount=%d", info->datacount);
uint32_t accesscs = dmi_read(target, DMI_PROGBUFCS);
info->progsize = get_field(accesscs, DMI_PROGBUFCS_PROGSIZE);
LOG_DEBUG("accesscs=0x%x", accesscs);
LOG_DEBUG(" progsize=%d", info->progsize);
info->datacount = get_field(abstractcs, DMI_ABSTRACTCS_DATACOUNT);
info->progsize = get_field(abstractcs, DMI_ABSTRACTCS_PROGSIZE);
uint32_t value = 0x53467665;
for (unsigned i = 0; i < info->datacount; i++) {
@ -1571,17 +1556,20 @@ static int examine(struct target *target)
value += 0x52534335;
}
if (hartstatus == 1) {
bool should_attempt_resume = false;
if (get_field(dmstatus, DMI_DMSTATUS_ANYRUNNING)) {
should_attempt_resume = true;
LOG_DEBUG("Hart currently running. Requesting halt.\n");
dmi_write(target, DMI_DMCONTROL, DMI_DMCONTROL_HALTREQ |
DMI_DMCONTROL_DMACTIVE);
for (unsigned i = 0; i < 256; i++) {
dmcontrol = dmi_read(target, DMI_DMCONTROL);
if (get_field(dmcontrol, DMI_DMCONTROL_HARTSTATUS) == 0)
dmstatus = dmi_read(target, DMI_DMSTATUS);
if (get_field(dmstatus, DMI_DMSTATUS_ALLHALTED))
break;
}
if (get_field(dmcontrol, DMI_DMCONTROL_HARTSTATUS) != 0) {
LOG_ERROR("hart didn't halt; dmcontrol=0x%x", dmcontrol);
if (!get_field(dmstatus, DMI_DMSTATUS_ALLHALTED)) {
LOG_ERROR("hart didn't halt; dmstatus=0x%x", dmstatus);
return ERROR_FAIL;
}
}
@ -1610,18 +1598,19 @@ static int examine(struct target *target)
return ERROR_FAIL;
}
if (hartstatus == 1) {
if (should_attempt_resume) {
LOG_DEBUG("Resuming hart.\n");
// Resume if the hart had been running.
dmi_write(target, DMI_DMCONTROL, DMI_DMCONTROL_DMACTIVE |
DMI_DMCONTROL_RESUMEREQ);
for (unsigned i = 0; i < 256; i++) {
dmcontrol = dmi_read(target, DMI_DMCONTROL);
if (get_field(dmcontrol, DMI_DMCONTROL_HARTSTATUS) == 1)
dmstatus = dmi_read(target, DMI_DMSTATUS);
if (get_field(dmstatus, DMI_DMSTATUS_ALLRUNNING))
break;
}
if (get_field(dmcontrol, DMI_DMCONTROL_HARTSTATUS) != 1) {
LOG_ERROR("hart didn't resume; dmcontrol=0x%x", dmcontrol);
if (!get_field(dmstatus, DMI_DMSTATUS_ALLRUNNING)) {
LOG_ERROR("hart didn't resume; dmstatus=0x%x", dmstatus);
return ERROR_FAIL;
}
}
@ -1767,25 +1756,29 @@ static int poll_target(struct target *target, bool announce)
if (debug_level >= LOG_LVL_DEBUG) {
debug_level = LOG_LVL_INFO;
}
uint32_t dmcontrol = dmi_read(target, DMI_DMCONTROL);
debug_level = old_debug_level;
switch (get_field(dmcontrol, DMI_DMCONTROL_HARTSTATUS)) {
case 0:
if (target->state != TARGET_HALTED) {
return handle_halt(target, announce);
}
break;
case 1:
target->state = TARGET_RUNNING;
break;
case 2:
// Could be unavailable for other reasons.
target->state = TARGET_RESET;
break;
case 3:
LOG_ERROR("Hart disappeared!");
return ERROR_FAIL;
uint32_t dmstatus = dmi_read(target, DMI_DMSTATUS);
if (get_field(dmstatus, DMI_DMSTATUS_ALLHALTED)) {
if (target->state != TARGET_HALTED) {
return handle_halt(target, announce);
}
return ERROR_OK;
}
if (get_field(dmstatus, DMI_DMSTATUS_ALLRUNNING)) {
target->state = TARGET_RUNNING;
return ERROR_OK;
}
if (get_field(dmstatus, DMI_DMSTATUS_ANYUNAVAIL)) {
target->state = TARGET_RESET;
return ERROR_OK;
}
if (get_field(dmstatus, DMI_DMSTATUS_ANYNONEXISTENT)) {
LOG_ERROR("Hart disappeared!");
return ERROR_FAIL;
}
return ERROR_OK;
@ -1864,8 +1857,9 @@ static int read_memory(struct target *target, uint32_t address,
abstract_register_size(xlen(target)) | reg_number_to_no(S1)) != ERROR_OK) {
return ERROR_FAIL;
}
dmi_write(target, DMI_ABSTRACTCS, DMI_ABSTRACTCS_AUTOEXEC0 | DMI_ABSTRACTCS_CMDERR);
uint32_t abstractcs;
dmi_write(target, DMI_ABSTRACTCS, DMI_ABSTRACTCS_CMDERR);
dmi_write(target, DMI_ABSTRACTAUTO, 0x1 << DMI_ABSTRACTAUTO_AUTOEXECPROGBUF_OFFSET);
for (uint32_t i = 0; i < count; i++) {
uint32_t value = dmi_read(target, DMI_DATA0);
switch (size) {
@ -1913,7 +1907,7 @@ static int check_dmi_error(struct target *target)
false);
if (status != DMI_STATUS_SUCCESS) {
// Clear errors.
dtmcontrol_scan(target, DTM_DTMCONTROL_DMIRESET);
dtmcontrol_scan(target, DTM_DTMCS_DMIRESET);
increase_dmi_busy_delay(target);
return 1;
}
@ -1975,7 +1969,10 @@ static int write_memory(struct target *target, uint32_t address,
| abstract_register_size(xlen(target)) |
reg_number_to_no(S1), true);
scans_add_dmi_write(scans, DMI_ABSTRACTCS,
DMI_ABSTRACTCS_AUTOEXEC0 | DMI_ABSTRACTCS_CMDERR,
DMI_ABSTRACTCS_CMDERR,
false);
scans_add_dmi_write(scans, DMI_ABSTRACTAUTO,
0x1 << DMI_ABSTRACTAUTO_AUTOEXECPROGBUF_OFFSET,
false);
}
}