#include "asm.h"
#include "batch.h"
-#define DM_DATA1 (DM_DATA0 + 1)
-#define DM_PROGBUF1 (DM_PROGBUF0 + 1)
-
static int riscv013_on_step_or_resume(struct target *target, bool step);
static int riscv013_step_or_resume_current_hart(struct target *target,
bool step, bool use_hasel);
/* Implementations of the functions in riscv_info_t. */
static int riscv013_get_register(struct target *target,
- riscv_reg_t *value, int hid, int rid);
-static int riscv013_set_register(struct target *target, int hartid, int regid, uint64_t value);
+ riscv_reg_t *value, int rid);
+static int riscv013_set_register(struct target *target, int regid, uint64_t value);
static int riscv013_select_current_hart(struct target *target);
static int riscv013_halt_prep(struct target *target);
static int riscv013_halt_go(struct target *target);
uint32_t write_size, uint32_t sbcs);
void read_memory_sba_simple(struct target *target, target_addr_t addr,
uint32_t *rd_buf, uint32_t read_size, uint32_t sbcs);
-static int riscv013_test_compliance(struct target *target);
/**
* Since almost everything can be accomplish by scanning the dbus register, all
bool abstract_read_fpr_supported;
bool abstract_write_fpr_supported;
+ yes_no_maybe_t has_aampostincrement;
+
/* When a function returns some error due to a failure indicated by the
* target in cmderr, the caller can look here to see what that error was.
* (Compare with errno.) */
static riscv013_info_t *get_info(const struct target *target)
{
riscv_info_t *info = (riscv_info_t *) target->arch_info;
+ assert(info);
+ assert(info->version_specific);
return (riscv013_info_t *) info->version_specific;
}
return ERROR_FAIL;
}
+ keep_alive();
+
time_t start = time(NULL);
/* This first loop performs the request. Note that if for some reason this
* stays busy, it is actually due to the previous access. */
return result;
int dmstatus_version = get_field(*dmstatus, DM_DMSTATUS_VERSION);
if (dmstatus_version != 2 && dmstatus_version != 3) {
- LOG_ERROR("OpenOCD only supports Debug Module version 2 (0.13) and 3 (0.14), not "
+ LOG_ERROR("OpenOCD only supports Debug Module version 2 (0.13) and 3 (1.0), not "
"%d (dmstatus=0x%x). This error might be caused by a JTAG "
"signal issue. Try reducing the JTAG clock speed.",
get_field(*dmstatus, DM_DMSTATUS_VERSION), *dmstatus);
scratch_mem_t scratch;
bool use_scratch = false;
if (number >= GDB_REGNO_FPR0 && number <= GDB_REGNO_FPR31 &&
- riscv_supports_extension(target, riscv_current_hartid(target), 'D') &&
+ riscv_supports_extension(target, 'D') &&
riscv_xlen(target) < 64) {
/* There are no instructions to move all the bits from a register, so
* we need to use some scratch RAM. */
return ERROR_FAIL;
if (number >= GDB_REGNO_FPR0 && number <= GDB_REGNO_FPR31) {
- if (riscv_supports_extension(target, riscv_current_hartid(target), 'D'))
+ if (riscv_supports_extension(target, 'D'))
riscv_program_insert(&program, fmv_d_x(number - GDB_REGNO_FPR0, S0));
else
riscv_program_insert(&program, fmv_w_x(number - GDB_REGNO_FPR0, S0));
return exec_out;
}
-/** Return the cached value, or read from the target if necessary. */
+/** Read register value from the target. Also update the cached value. */
static int register_read(struct target *target, uint64_t *value, uint32_t number)
{
if (number == GDB_REGNO_ZERO) {
return ERROR_FAIL;
if (number >= GDB_REGNO_FPR0 && number <= GDB_REGNO_FPR31) {
- if (riscv_supports_extension(target, riscv_current_hartid(target), 'D')
+ if (riscv_supports_extension(target, 'D')
&& riscv_xlen(target) < 64) {
/* There are no instructions to move all the bits from a
* register, so we need to use some scratch RAM. */
scratch_release(target, &scratch);
return ERROR_FAIL;
}
- } else if (riscv_supports_extension(target,
- riscv_current_hartid(target), 'D')) {
+ } else if (riscv_supports_extension(target, 'D')) {
riscv_program_insert(&program, fmv_x_d(S0, number - GDB_REGNO_FPR0));
} else {
riscv_program_insert(&program, fmv_x_w(S0, number - GDB_REGNO_FPR0));
return result;
}
-int wait_for_authbusy(struct target *target, uint32_t *dmstatus)
+static int wait_for_authbusy(struct target *target, uint32_t *dmstatus)
{
time_t start = time(NULL);
while (1) {
return ERROR_OK;
}
-static int discover_vlenb(struct target *target, int hartid)
+static int discover_vlenb(struct target *target)
{
RISCV_INFO(r);
riscv_reg_t vlenb;
if (register_read(target, &vlenb, GDB_REGNO_VLENB) != ERROR_OK) {
LOG_WARNING("Couldn't read vlenb for %s; vector register access won't work.",
target_name(target));
- r->vlenb[hartid] = 0;
+ r->vlenb = 0;
return ERROR_OK;
}
- r->vlenb[hartid] = vlenb;
+ r->vlenb = vlenb;
- LOG_INFO("hart %d: Vector support with vlenb=%d", hartid, r->vlenb[hartid]);
+ LOG_INFO("Vector support with vlenb=%d", r->vlenb);
return ERROR_OK;
}
LOG_DEBUG("Detected %d harts.", dm->hart_count);
}
+ r->current_hartid = target->coreid;
+
if (dm->hart_count == 0) {
LOG_ERROR("No harts found!");
return ERROR_FAIL;
/* Don't call any riscv_* functions until after we've counted the number of
* cores and initialized registers. */
- for (int i = 0; i < dm->hart_count; ++i) {
- if (!riscv_rtos_enabled(target) && i != target->coreid)
- continue;
- r->current_hartid = i;
- if (riscv013_select_current_hart(target) != ERROR_OK)
- return ERROR_FAIL;
+ if (riscv013_select_current_hart(target) != ERROR_OK)
+ return ERROR_FAIL;
- bool halted = riscv_is_halted(target);
- if (!halted) {
- if (riscv013_halt_go(target) != ERROR_OK) {
- LOG_ERROR("Fatal: Hart %d failed to halt during examine()", i);
- return ERROR_FAIL;
- }
+ bool halted = riscv_is_halted(target);
+ if (!halted) {
+ if (riscv013_halt_go(target) != ERROR_OK) {
+ LOG_ERROR("Fatal: Hart %d failed to halt during examine()", r->current_hartid);
+ return ERROR_FAIL;
}
+ }
- /* Without knowing anything else we can at least mess with the
- * program buffer. */
- r->debug_buffer_size[i] = info->progbufsize;
+ /* Without knowing anything else we can at least mess with the
+ * program buffer. */
+ r->debug_buffer_size = info->progbufsize;
- int result = register_read_abstract(target, NULL, GDB_REGNO_S0, 64);
- if (result == ERROR_OK)
- r->xlen[i] = 64;
- else
- r->xlen[i] = 32;
-
- if (register_read(target, &r->misa[i], GDB_REGNO_MISA)) {
- LOG_ERROR("Fatal: Failed to read MISA from hart %d.", i);
- return ERROR_FAIL;
- }
+ int result = register_read_abstract(target, NULL, GDB_REGNO_S0, 64);
+ if (result == ERROR_OK)
+ r->xlen = 64;
+ else
+ r->xlen = 32;
- if (riscv_supports_extension(target, i, 'V')) {
- if (discover_vlenb(target, i) != ERROR_OK)
- return ERROR_FAIL;
- }
+ if (register_read(target, &r->misa, GDB_REGNO_MISA)) {
+ LOG_ERROR("Fatal: Failed to read MISA from hart %d.", r->current_hartid);
+ return ERROR_FAIL;
+ }
- /* Now init registers based on what we discovered. */
- if (riscv_init_registers(target) != ERROR_OK)
+ if (riscv_supports_extension(target, 'V')) {
+ if (discover_vlenb(target) != ERROR_OK)
return ERROR_FAIL;
+ }
+
+ /* Now init registers based on what we discovered. */
+ if (riscv_init_registers(target) != ERROR_OK)
+ return ERROR_FAIL;
- /* Display this as early as possible to help people who are using
- * really slow simulators. */
- LOG_DEBUG(" hart %d: XLEN=%d, misa=0x%" PRIx64, i, r->xlen[i],
- r->misa[i]);
+ /* Display this as early as possible to help people who are using
+ * really slow simulators. */
+ LOG_DEBUG(" hart %d: XLEN=%d, misa=0x%" PRIx64, r->current_hartid, r->xlen,
+ r->misa);
- if (!halted)
- riscv013_step_or_resume_current_hart(target, false, false);
- }
+ if (!halted)
+ riscv013_step_or_resume_current_hart(target, false, false);
target_set_examined(target);
* We will need to update those suites if we want to change that text. */
LOG_INFO("Examined RISC-V core; found %d harts",
riscv_count_harts(target));
- for (int i = 0; i < riscv_count_harts(target); ++i) {
- if (riscv_hart_enabled(target, i)) {
- LOG_INFO(" hart %d: XLEN=%d, misa=0x%" PRIx64, i, r->xlen[i],
- r->misa[i]);
- } else {
- LOG_INFO(" hart %d: currently disabled", i);
- }
- }
+ LOG_INFO(" hart %d: XLEN=%d, misa=0x%" PRIx64, r->current_hartid, r->xlen,
+ r->misa);
return ERROR_OK;
}
-int riscv013_authdata_read(struct target *target, uint32_t *value)
+static int riscv013_authdata_read(struct target *target, uint32_t *value, unsigned int index)
{
+ if (index > 0) {
+ LOG_ERROR("Spec 0.13 only has a single authdata register.");
+ return ERROR_FAIL;
+ }
+
if (wait_for_authbusy(target, NULL) != ERROR_OK)
return ERROR_FAIL;
return dmi_read(target, value, DM_AUTHDATA);
}
-int riscv013_authdata_write(struct target *target, uint32_t value)
+static int riscv013_authdata_write(struct target *target, uint32_t value, unsigned int index)
{
+ if (index > 0) {
+ LOG_ERROR("Spec 0.13 only has a single authdata register.");
+ return ERROR_FAIL;
+ }
+
uint32_t before, after;
if (wait_for_authbusy(target, &before) != ERROR_OK)
return ERROR_FAIL;
return dm->hart_count;
}
+/* Try to find out the widest memory access size depending on the selected memory access methods. */
static unsigned riscv013_data_bits(struct target *target)
{
RISCV013_INFO(info);
- /* TODO: Once there is a spec for discovering abstract commands, we can
- * take those into account as well. For now we assume abstract commands
- * support XLEN-wide accesses. */
- if (has_sufficient_progbuf(target, 3) && !riscv_prefer_sba)
- return riscv_xlen(target);
+ RISCV_INFO(r);
- if (get_field(info->sbcs, DM_SBCS_SBACCESS128))
- return 128;
- if (get_field(info->sbcs, DM_SBCS_SBACCESS64))
- return 64;
- if (get_field(info->sbcs, DM_SBCS_SBACCESS32))
- return 32;
- if (get_field(info->sbcs, DM_SBCS_SBACCESS16))
- return 16;
- if (get_field(info->sbcs, DM_SBCS_SBACCESS8))
- return 8;
-
- return riscv_xlen(target);
+ for (unsigned int i = 0; i < RISCV_NUM_MEM_ACCESS_METHODS; i++) {
+ int method = r->mem_access_methods[i];
+
+ if (method == RISCV_MEM_ACCESS_PROGBUF) {
+ if (has_sufficient_progbuf(target, 3))
+ return riscv_xlen(target);
+ } else if (method == RISCV_MEM_ACCESS_SYSBUS) {
+ if (get_field(info->sbcs, DM_SBCS_SBACCESS128))
+ return 128;
+ if (get_field(info->sbcs, DM_SBCS_SBACCESS64))
+ return 64;
+ if (get_field(info->sbcs, DM_SBCS_SBACCESS32))
+ return 32;
+ if (get_field(info->sbcs, DM_SBCS_SBACCESS16))
+ return 16;
+ if (get_field(info->sbcs, DM_SBCS_SBACCESS8))
+ return 8;
+ } else if (method == RISCV_MEM_ACCESS_ABSTRACT) {
+ /* TODO: Once there is a spec for discovering abstract commands, we can
+ * take those into account as well. For now we assume abstract commands
+ * support XLEN-wide accesses. */
+ return riscv_xlen(target);
+ } else if (method == RISCV_MEM_ACCESS_UNSPECIFIED)
+ /* No further mem access method to try. */
+ break;
+ }
+ LOG_ERROR("Unable to determine supported data bits on this target. Assuming 32 bits.");
+ return 32;
+}
+
+COMMAND_HELPER(riscv013_print_info, struct target *target)
+{
+ RISCV013_INFO(info);
+
+ /* Abstract description. */
+ riscv_print_info_line(CMD, "target", "memory.read_while_running8", get_field(info->sbcs, DM_SBCS_SBACCESS8));
+ riscv_print_info_line(CMD, "target", "memory.write_while_running8", get_field(info->sbcs, DM_SBCS_SBACCESS8));
+ riscv_print_info_line(CMD, "target", "memory.read_while_running16", get_field(info->sbcs, DM_SBCS_SBACCESS16));
+ riscv_print_info_line(CMD, "target", "memory.write_while_running16", get_field(info->sbcs, DM_SBCS_SBACCESS16));
+ riscv_print_info_line(CMD, "target", "memory.read_while_running32", get_field(info->sbcs, DM_SBCS_SBACCESS32));
+ riscv_print_info_line(CMD, "target", "memory.write_while_running32", get_field(info->sbcs, DM_SBCS_SBACCESS32));
+ riscv_print_info_line(CMD, "target", "memory.read_while_running64", get_field(info->sbcs, DM_SBCS_SBACCESS64));
+ riscv_print_info_line(CMD, "target", "memory.write_while_running64", get_field(info->sbcs, DM_SBCS_SBACCESS64));
+ riscv_print_info_line(CMD, "target", "memory.read_while_running128", get_field(info->sbcs, DM_SBCS_SBACCESS128));
+ riscv_print_info_line(CMD, "target", "memory.write_while_running128", get_field(info->sbcs, DM_SBCS_SBACCESS128));
+
+ /* Lower level description. */
+ riscv_print_info_line(CMD, "dm", "abits", info->abits);
+ riscv_print_info_line(CMD, "dm", "progbufsize", info->progbufsize);
+ riscv_print_info_line(CMD, "dm", "sbversion", get_field(info->sbcs, DM_SBCS_SBVERSION));
+ riscv_print_info_line(CMD, "dm", "sbasize", get_field(info->sbcs, DM_SBCS_SBASIZE));
+ riscv_print_info_line(CMD, "dm", "sbaccess128", get_field(info->sbcs, DM_SBCS_SBACCESS128));
+ riscv_print_info_line(CMD, "dm", "sbaccess64", get_field(info->sbcs, DM_SBCS_SBACCESS64));
+ riscv_print_info_line(CMD, "dm", "sbaccess32", get_field(info->sbcs, DM_SBCS_SBACCESS32));
+ riscv_print_info_line(CMD, "dm", "sbaccess16", get_field(info->sbcs, DM_SBCS_SBACCESS16));
+ riscv_print_info_line(CMD, "dm", "sbaccess8", get_field(info->sbcs, DM_SBCS_SBACCESS8));
+
+ uint32_t dmstatus;
+ if (dmstatus_read(target, &dmstatus, false) == ERROR_OK)
+ riscv_print_info_line(CMD, "dm", "authenticated", get_field(dmstatus, DM_DMSTATUS_AUTHENTICATED));
+
+ return 0;
}
static int prep_for_vector_access(struct target *target, uint64_t *vtype,
if (register_write_direct(target, GDB_REGNO_VTYPE, encoded_vsew << 3) != ERROR_OK)
return ERROR_FAIL;
- *debug_vl = DIV_ROUND_UP(r->vlenb[r->current_hartid] * 8,
- riscv_xlen(target));
+ *debug_vl = DIV_ROUND_UP(r->vlenb * 8, riscv_xlen(target));
if (register_write_direct(target, GDB_REGNO_VL, *debug_vl) != ERROR_OK)
return ERROR_FAIL;
{
assert(regno >= GDB_REGNO_V0 && regno <= GDB_REGNO_V31);
+ if (riscv_select_current_hart(target) != ERROR_OK)
+ return ERROR_FAIL;
+
riscv_reg_t s0;
if (register_read(target, &s0, GDB_REGNO_S0) != ERROR_OK)
return ERROR_FAIL;
{
assert(regno >= GDB_REGNO_V0 && regno <= GDB_REGNO_V31);
+ if (riscv_select_current_hart(target) != ERROR_OK)
+ return ERROR_FAIL;
+
riscv_reg_t s0;
if (register_read(target, &s0, GDB_REGNO_S0) != ERROR_OK)
return ERROR_FAIL;
return result;
}
+static uint32_t sb_sbaccess(unsigned int size_bytes)
+{
+ switch (size_bytes) {
+ case 1:
+ return set_field(0, DM_SBCS_SBACCESS, 0);
+ case 2:
+ return set_field(0, DM_SBCS_SBACCESS, 1);
+ case 4:
+ return set_field(0, DM_SBCS_SBACCESS, 2);
+ case 8:
+ return set_field(0, DM_SBCS_SBACCESS, 3);
+ case 16:
+ return set_field(0, DM_SBCS_SBACCESS, 4);
+ }
+ assert(0);
+ return 0;
+}
+
+static int sb_write_address(struct target *target, target_addr_t address,
+ bool ensure_success)
+{
+ RISCV013_INFO(info);
+ unsigned int sbasize = get_field(info->sbcs, DM_SBCS_SBASIZE);
+ /* There currently is no support for >64-bit addresses in OpenOCD. */
+ if (sbasize > 96)
+ dmi_op(target, NULL, NULL, DMI_OP_WRITE, DM_SBADDRESS3, 0, false, false);
+ if (sbasize > 64)
+ dmi_op(target, NULL, NULL, DMI_OP_WRITE, DM_SBADDRESS2, 0, false, false);
+ if (sbasize > 32)
+ dmi_op(target, NULL, NULL, DMI_OP_WRITE, DM_SBADDRESS1, address >> 32, false, false);
+ return dmi_op(target, NULL, NULL, DMI_OP_WRITE, DM_SBADDRESS0, address,
+ false, ensure_success);
+}
+
+static int batch_run(const struct target *target, struct riscv_batch *batch)
+{
+ RISCV013_INFO(info);
+ RISCV_INFO(r);
+ if (r->reset_delays_wait >= 0) {
+ r->reset_delays_wait -= batch->used_scans;
+ if (r->reset_delays_wait <= 0) {
+ batch->idle_count = 0;
+ info->dmi_busy_delay = 0;
+ info->ac_busy_delay = 0;
+ }
+ }
+ return riscv_batch_run(batch);
+}
+
+static int sba_supports_access(struct target *target, unsigned int size_bytes)
+{
+ RISCV013_INFO(info);
+ switch (size_bytes) {
+ case 1:
+ return get_field(info->sbcs, DM_SBCS_SBACCESS8);
+ case 2:
+ return get_field(info->sbcs, DM_SBCS_SBACCESS16);
+ case 4:
+ return get_field(info->sbcs, DM_SBCS_SBACCESS32);
+ case 8:
+ return get_field(info->sbcs, DM_SBCS_SBACCESS64);
+ case 16:
+ return get_field(info->sbcs, DM_SBCS_SBACCESS128);
+ default:
+ return 0;
+ }
+}
+
+static int sample_memory_bus_v1(struct target *target,
+ struct riscv_sample_buf *buf,
+ const riscv_sample_config_t *config,
+ int64_t until_ms)
+{
+ RISCV013_INFO(info);
+ unsigned int sbasize = get_field(info->sbcs, DM_SBCS_SBASIZE);
+ if (sbasize > 64) {
+ LOG_ERROR("Memory sampling is only implemented for sbasize <= 64.");
+ return ERROR_NOT_IMPLEMENTED;
+ }
+
+ if (get_field(info->sbcs, DM_SBCS_SBVERSION) != 1) {
+ LOG_ERROR("Memory sampling is only implemented for SBA version 1.");
+ return ERROR_NOT_IMPLEMENTED;
+ }
+
+ uint32_t sbcs = 0;
+ uint32_t sbcs_valid = false;
+
+ uint32_t sbaddress0 = 0;
+ bool sbaddress0_valid = false;
+ uint32_t sbaddress1 = 0;
+ bool sbaddress1_valid = false;
+
+ /* How often to read each value in a batch. */
+ const unsigned int repeat = 5;
+
+ unsigned int enabled_count = 0;
+ for (unsigned int i = 0; i < ARRAY_SIZE(config->bucket); i++) {
+ if (config->bucket[i].enabled)
+ enabled_count++;
+ }
+
+ while (timeval_ms() < until_ms) {
+ /*
+ * batch_run() adds to the batch, so we can't simply reuse the same
+ * batch over and over. So we create a new one every time through the
+ * loop.
+ */
+ struct riscv_batch *batch = riscv_batch_alloc(
+ target, 1 + enabled_count * 5 * repeat,
+ info->dmi_busy_delay + info->bus_master_read_delay);
+ if (!batch)
+ return ERROR_FAIL;
+
+ unsigned int result_bytes = 0;
+ for (unsigned int n = 0; n < repeat; n++) {
+ for (unsigned int i = 0; i < ARRAY_SIZE(config->bucket); i++) {
+ if (config->bucket[i].enabled) {
+ if (!sba_supports_access(target, config->bucket[i].size_bytes)) {
+ LOG_ERROR("Hardware does not support SBA access for %d-byte memory sampling.",
+ config->bucket[i].size_bytes);
+ return ERROR_NOT_IMPLEMENTED;
+ }
+
+ uint32_t sbcs_write = DM_SBCS_SBREADONADDR;
+ if (enabled_count == 1)
+ sbcs_write |= DM_SBCS_SBREADONDATA;
+ sbcs_write |= sb_sbaccess(config->bucket[i].size_bytes);
+ if (!sbcs_valid || sbcs_write != sbcs) {
+ riscv_batch_add_dmi_write(batch, DM_SBCS, sbcs_write);
+ sbcs = sbcs_write;
+ sbcs_valid = true;
+ }
+
+ if (sbasize > 32 &&
+ (!sbaddress1_valid ||
+ sbaddress1 != config->bucket[i].address >> 32)) {
+ sbaddress1 = config->bucket[i].address >> 32;
+ riscv_batch_add_dmi_write(batch, DM_SBADDRESS1, sbaddress1);
+ sbaddress1_valid = true;
+ }
+ if (!sbaddress0_valid ||
+ sbaddress0 != (config->bucket[i].address & 0xffffffff)) {
+ sbaddress0 = config->bucket[i].address;
+ riscv_batch_add_dmi_write(batch, DM_SBADDRESS0, sbaddress0);
+ sbaddress0_valid = true;
+ }
+ if (config->bucket[i].size_bytes > 4)
+ riscv_batch_add_dmi_read(batch, DM_SBDATA1);
+ riscv_batch_add_dmi_read(batch, DM_SBDATA0);
+ result_bytes += 1 + config->bucket[i].size_bytes;
+ }
+ }
+ }
+
+ if (buf->used + result_bytes >= buf->size) {
+ riscv_batch_free(batch);
+ break;
+ }
+
+ size_t sbcs_key = riscv_batch_add_dmi_read(batch, DM_SBCS);
+
+ int result = batch_run(target, batch);
+ if (result != ERROR_OK)
+ return result;
+
+ uint32_t sbcs_read = riscv_batch_get_dmi_read_data(batch, sbcs_key);
+ if (get_field(sbcs_read, DM_SBCS_SBBUSYERROR)) {
+ /* Discard this batch (too much hassle to try to recover partial
+ * data) and try again with a larger delay. */
+ info->bus_master_read_delay += info->bus_master_read_delay / 10 + 1;
+ dmi_write(target, DM_SBCS, sbcs_read | DM_SBCS_SBBUSYERROR | DM_SBCS_SBERROR);
+ riscv_batch_free(batch);
+ continue;
+ }
+ if (get_field(sbcs_read, DM_SBCS_SBERROR)) {
+ /* The memory we're sampling was unreadable, somehow. Give up. */
+ dmi_write(target, DM_SBCS, DM_SBCS_SBBUSYERROR | DM_SBCS_SBERROR);
+ riscv_batch_free(batch);
+ return ERROR_FAIL;
+ }
+
+ unsigned int read = 0;
+ for (unsigned int n = 0; n < repeat; n++) {
+ for (unsigned int i = 0; i < ARRAY_SIZE(config->bucket); i++) {
+ if (config->bucket[i].enabled) {
+ assert(i < RISCV_SAMPLE_BUF_TIMESTAMP_BEFORE);
+ uint64_t value = 0;
+ if (config->bucket[i].size_bytes > 4)
+ value = ((uint64_t)riscv_batch_get_dmi_read_data(batch, read++)) << 32;
+ value |= riscv_batch_get_dmi_read_data(batch, read++);
+
+ buf->buf[buf->used] = i;
+ buf_set_u64(buf->buf + buf->used + 1, 0, config->bucket[i].size_bytes * 8, value);
+ buf->used += 1 + config->bucket[i].size_bytes;
+ }
+ }
+ }
+
+ riscv_batch_free(batch);
+ }
+
+ return ERROR_OK;
+}
+
+static int sample_memory(struct target *target,
+ struct riscv_sample_buf *buf,
+ riscv_sample_config_t *config,
+ int64_t until_ms)
+{
+ if (!config->enabled)
+ return ERROR_OK;
+
+ return sample_memory_bus_v1(target, buf, config, until_ms);
+}
+
static int init_target(struct command_context *cmd_ctx,
struct target *target)
{
LOG_DEBUG("init");
- riscv_info_t *generic_info = (riscv_info_t *) target->arch_info;
+ RISCV_INFO(generic_info);
generic_info->get_register = &riscv013_get_register;
generic_info->set_register = &riscv013_set_register;
generic_info->dmi_write = &dmi_write;
generic_info->read_memory = read_memory;
generic_info->test_sba_config_reg = &riscv013_test_sba_config_reg;
- generic_info->test_compliance = &riscv013_test_compliance;
generic_info->hart_count = &riscv013_hart_count;
generic_info->data_bits = &riscv013_data_bits;
+ generic_info->print_info = &riscv013_print_info;
generic_info->version_specific = calloc(1, sizeof(riscv013_info_t));
if (!generic_info->version_specific)
return ERROR_FAIL;
+ generic_info->sample_memory = sample_memory;
riscv013_info_t *info = get_info(target);
info->progbufsize = -1;
info->abstract_read_fpr_supported = true;
info->abstract_write_fpr_supported = true;
+ info->has_aampostincrement = YNM_MAYBE;
+
return ERROR_OK;
}
uint32_t control_base = set_field(0, DM_DMCONTROL_DMACTIVE, 1);
- if (target->rtos) {
+ if (target_has_event_action(target, TARGET_EVENT_RESET_ASSERT)) {
+ /* Run the user-supplied script if there is one. */
+ target_handle_event(target, TARGET_EVENT_RESET_ASSERT);
+ } else if (target->rtos) {
/* There's only one target, and OpenOCD thinks each hart is a thread.
* We must reset them all. */
/* Set haltreq for each hart. */
uint32_t control = control_base;
- for (int i = 0; i < riscv_count_harts(target); ++i) {
- if (!riscv_hart_enabled(target, i))
- continue;
- control = set_hartsel(control_base, i);
- control = set_field(control, DM_DMCONTROL_HALTREQ,
- target->reset_halt ? 1 : 0);
- dmi_write(target, DM_DMCONTROL, control);
- }
+ control = set_hartsel(control_base, target->coreid);
+ control = set_field(control, DM_DMCONTROL_HALTREQ,
+ target->reset_halt ? 1 : 0);
+ dmi_write(target, DM_DMCONTROL, control);
+
/* Assert ndmreset */
control = set_field(control, DM_DMCONTROL_NDMRESET, 1);
dmi_write(target, DM_DMCONTROL, control);
for (int i = 0; i < riscv_count_harts(target); ++i) {
int index = i;
if (target->rtos) {
- if (!riscv_hart_enabled(target, index))
+ if (index != target->coreid)
continue;
dmi_write(target, DM_DMCONTROL,
set_hartsel(control, index));
index = r->current_hartid;
}
- char *operation;
- uint32_t expected_field;
- if (target->reset_halt) {
- operation = "halt";
- expected_field = DM_DMSTATUS_ALLHALTED;
- } else {
- operation = "run";
- expected_field = DM_DMSTATUS_ALLRUNNING;
- }
- LOG_DEBUG("Waiting for hart %d to %s out of reset.", index, operation);
+ LOG_DEBUG("Waiting for hart %d to come out of reset.", index);
while (1) {
int result = dmstatus_read_timeout(target, &dmstatus, true,
riscv_reset_timeout_sec);
index, riscv_reset_timeout_sec);
if (result != ERROR_OK)
return result;
- if (get_field(dmstatus, expected_field))
+ /* Certain debug modules, like the one in GD32VF103
+ * MCUs, violate the specification's requirement that
+ * each hart is in "exactly one of four states" and,
+ * during reset, report harts as both unavailable and
+ * halted/running. To work around this, we check for
+ * the absence of the unavailable state rather than
+ * the presence of any other state. */
+ if (!get_field(dmstatus, DM_DMSTATUS_ALLUNAVAIL))
break;
if (time(NULL) - start > riscv_reset_timeout_sec) {
- LOG_ERROR("Hart %d didn't %s coming out of reset in %ds; "
+ LOG_ERROR("Hart %d didn't leave reset in %ds; "
"dmstatus=0x%x; "
"Increase the timeout with riscv set_reset_timeout_sec.",
- index, operation, riscv_reset_timeout_sec, dmstatus);
+ index, riscv_reset_timeout_sec, dmstatus);
return ERROR_FAIL;
}
}
static int execute_fence(struct target *target)
{
- int old_hartid = riscv_current_hartid(target);
-
/* FIXME: For non-coherent systems we need to flush the caches right
* here, but there's no ISA-defined way of doing that. */
{
LOG_DEBUG("Unable to execute pre-fence");
}
- for (int i = 0; i < riscv_count_harts(target); ++i) {
- if (!riscv_hart_enabled(target, i))
- continue;
-
- if (i == old_hartid)
- /* Fence already executed for this hart */
- continue;
-
- riscv_set_current_hartid(target, i);
-
- struct riscv_program program;
- riscv_program_init(&program, target);
- riscv_program_fence_i(&program);
- riscv_program_fence(&program);
- int result = riscv_program_exec(&program, target);
- if (result != ERROR_OK)
- LOG_DEBUG("Unable to execute fence on hart %d", i);
- }
-
- riscv_set_current_hartid(target, old_hartid);
-
return ERROR_OK;
}
return ERROR_OK;
}
-static uint32_t sb_sbaccess(unsigned size_bytes)
-{
- switch (size_bytes) {
- case 1:
- return set_field(0, DM_SBCS_SBACCESS, 0);
- case 2:
- return set_field(0, DM_SBCS_SBACCESS, 1);
- case 4:
- return set_field(0, DM_SBCS_SBACCESS, 2);
- case 8:
- return set_field(0, DM_SBCS_SBACCESS, 3);
- case 16:
- return set_field(0, DM_SBCS_SBACCESS, 4);
- }
- assert(0);
- return 0; /* Make mingw happy. */
-}
-
static target_addr_t sb_read_address(struct target *target)
{
RISCV013_INFO(info);
return address;
}
-static int sb_write_address(struct target *target, target_addr_t address)
-{
- RISCV013_INFO(info);
- unsigned sbasize = get_field(info->sbcs, DM_SBCS_SBASIZE);
- /* There currently is no support for >64-bit addresses in OpenOCD. */
- if (sbasize > 96)
- dmi_write(target, DM_SBADDRESS3, 0);
- if (sbasize > 64)
- dmi_write(target, DM_SBADDRESS2, 0);
- if (sbasize > 32)
- dmi_write(target, DM_SBADDRESS1, address >> 32);
- return dmi_write(target, DM_SBADDRESS0, address);
-}
-
static int read_sbcs_nonbusy(struct target *target, uint32_t *sbcs)
{
time_t start = time(NULL);
}
}
+ uint32_t sbcs;
+ if (dmi_read(target, &sbcs, DM_SBCS) != ERROR_OK)
+ return ERROR_FAIL;
+
return ERROR_OK;
}
return ERROR_FAIL;
/* This address write will trigger the first read. */
- if (sb_write_address(target, next_address) != ERROR_OK)
+ if (sb_write_address(target, next_address, true) != ERROR_OK)
return ERROR_FAIL;
if (info->bus_master_read_delay) {
next_read);
return ERROR_FAIL;
}
+ keep_alive();
dmi_status_t status = dmi_scan(target, NULL, &value,
DMI_OP_READ, sbdata[j], 0, false);
if (status == DMI_STATUS_BUSY)
if (get_field(sbcs_read, DM_SBCS_SBBUSYERROR)) {
/* We read while the target was busy. Slow down and try again. */
- if (dmi_write(target, DM_SBCS, DM_SBCS_SBBUSYERROR) != ERROR_OK)
+ if (dmi_write(target, DM_SBCS, sbcs_read | DM_SBCS_SBBUSYERROR) != ERROR_OK)
return ERROR_FAIL;
next_address = sb_read_address(target);
info->bus_master_read_delay += info->bus_master_read_delay / 10 + 1;
return ERROR_OK;
}
-static int batch_run(const struct target *target, struct riscv_batch *batch)
+static void log_mem_access_result(struct target *target, bool success, int method, bool read)
{
- RISCV013_INFO(info);
RISCV_INFO(r);
- if (r->reset_delays_wait >= 0) {
- r->reset_delays_wait -= batch->used_scans;
- if (r->reset_delays_wait <= 0) {
- batch->idle_count = 0;
- info->dmi_busy_delay = 0;
- info->ac_busy_delay = 0;
+ bool warn = false;
+ char msg[60];
+
+ /* Compose the message */
+ snprintf(msg, 60, "%s to %s memory via %s.",
+ success ? "Succeeded" : "Failed",
+ read ? "read" : "write",
+ (method == RISCV_MEM_ACCESS_PROGBUF) ? "program buffer" :
+ (method == RISCV_MEM_ACCESS_SYSBUS) ? "system bus" : "abstract access");
+
+ /* Determine the log message severity. Show warnings only once. */
+ if (!success) {
+ if (method == RISCV_MEM_ACCESS_PROGBUF) {
+ warn = r->mem_access_progbuf_warn;
+ r->mem_access_progbuf_warn = false;
+ }
+ if (method == RISCV_MEM_ACCESS_SYSBUS) {
+ warn = r->mem_access_sysbus_warn;
+ r->mem_access_sysbus_warn = false;
+ }
+ if (method == RISCV_MEM_ACCESS_ABSTRACT) {
+ warn = r->mem_access_abstract_warn;
+ r->mem_access_abstract_warn = false;
}
}
- return riscv_batch_run(batch);
+
+ if (warn)
+ LOG_WARNING("%s", msg);
+ else
+ LOG_DEBUG("%s", msg);
+}
+
+static bool mem_should_skip_progbuf(struct target *target, target_addr_t address,
+ uint32_t size, bool read, char **skip_reason)
+{
+ assert(skip_reason);
+
+ if (!has_sufficient_progbuf(target, 3)) {
+ LOG_DEBUG("Skipping mem %s via progbuf - insufficient progbuf size.",
+ read ? "read" : "write");
+ *skip_reason = "skipped (insufficient progbuf)";
+ return true;
+ }
+ if (target->state != TARGET_HALTED) {
+ LOG_DEBUG("Skipping mem %s via progbuf - target not halted.",
+ read ? "read" : "write");
+ *skip_reason = "skipped (target not halted)";
+ return true;
+ }
+ if (riscv_xlen(target) < size * 8) {
+ LOG_DEBUG("Skipping mem %s via progbuf - XLEN (%d) is too short for %d-bit memory access.",
+ read ? "read" : "write", riscv_xlen(target), size * 8);
+ *skip_reason = "skipped (XLEN too short)";
+ return true;
+ }
+ if (size > 8) {
+ LOG_DEBUG("Skipping mem %s via progbuf - unsupported size.",
+ read ? "read" : "write");
+ *skip_reason = "skipped (unsupported size)";
+ return true;
+ }
+ if ((sizeof(address) * 8 > riscv_xlen(target)) && (address >> riscv_xlen(target))) {
+ LOG_DEBUG("Skipping mem %s via progbuf - progbuf only supports %u-bit address.",
+ read ? "read" : "write", riscv_xlen(target));
+ *skip_reason = "skipped (too large address)";
+ return true;
+ }
+
+ return false;
+}
+
+static bool mem_should_skip_sysbus(struct target *target, target_addr_t address,
+ uint32_t size, uint32_t increment, bool read, char **skip_reason)
+{
+ assert(skip_reason);
+
+ RISCV013_INFO(info);
+ if (!sba_supports_access(target, size)) {
+ LOG_DEBUG("Skipping mem %s via system bus - unsupported size.",
+ read ? "read" : "write");
+ *skip_reason = "skipped (unsupported size)";
+ return true;
+ }
+ unsigned int sbasize = get_field(info->sbcs, DM_SBCS_SBASIZE);
+ if ((sizeof(address) * 8 > sbasize) && (address >> sbasize)) {
+ LOG_DEBUG("Skipping mem %s via system bus - sba only supports %u-bit address.",
+ read ? "read" : "write", sbasize);
+ *skip_reason = "skipped (too large address)";
+ return true;
+ }
+ if (read && increment != size && (get_field(info->sbcs, DM_SBCS_SBVERSION) == 0 || increment != 0)) {
+ LOG_DEBUG("Skipping mem read via system bus - "
+ "sba reads only support size==increment or also size==0 for sba v1.");
+ *skip_reason = "skipped (unsupported increment)";
+ return true;
+ }
+
+ return false;
+}
+
+static bool mem_should_skip_abstract(struct target *target, target_addr_t address,
+ uint32_t size, uint32_t increment, bool read, char **skip_reason)
+{
+ assert(skip_reason);
+
+ if (size > 8) {
+ /* TODO: Add 128b support if it's ever used. Involves modifying
+ read/write_abstract_arg() to work on two 64b values. */
+ LOG_DEBUG("Skipping mem %s via abstract access - unsupported size: %d bits",
+ read ? "read" : "write", size * 8);
+ *skip_reason = "skipped (unsupported size)";
+ return true;
+ }
+ if ((sizeof(address) * 8 > riscv_xlen(target)) && (address >> riscv_xlen(target))) {
+ LOG_DEBUG("Skipping mem %s via abstract access - abstract access only supports %u-bit address.",
+ read ? "read" : "write", riscv_xlen(target));
+ *skip_reason = "skipped (too large address)";
+ return true;
+ }
+ if (read && size != increment) {
+ LOG_ERROR("Skipping mem read via abstract access - "
+ "abstract command reads only support size==increment.");
+ *skip_reason = "skipped (unsupported increment)";
+ return true;
+ }
+
+ return false;
}
/*
static int read_memory_abstract(struct target *target, target_addr_t address,
uint32_t size, uint32_t count, uint8_t *buffer, uint32_t increment)
{
- if (size != increment) {
- LOG_ERROR("abstract command reads only support size==increment");
- return ERROR_NOT_IMPLEMENTED;
- }
+ RISCV013_INFO(info);
int result = ERROR_OK;
+ bool use_aampostincrement = info->has_aampostincrement != YNM_NO;
LOG_DEBUG("reading %d words of %d bytes from 0x%" TARGET_PRIxADDR, count,
size, address);
/* Convert the size (bytes) to width (bits) */
unsigned width = size << 3;
- if (width > 64) {
- /* TODO: Add 128b support if it's ever used. Involves modifying
- read/write_abstract_arg() to work on two 64b values. */
- LOG_ERROR("Unsupported size: %d bits", size);
- return ERROR_FAIL;
- }
/* Create the command (physical address, postincrement, read) */
- uint32_t command = access_memory_command(target, false, width, true, false);
+ uint32_t command = access_memory_command(target, false, width, use_aampostincrement, false);
/* Execute the reads */
uint8_t *p = buffer;
bool updateaddr = true;
- unsigned width32 = (width + 31) / 32 * 32;
+ unsigned int width32 = (width < 32) ? 32 : width;
for (uint32_t c = 0; c < count; c++) {
- /* Only update the address initially and let postincrement update it */
+ /* Update the address if it is the first time or aampostincrement is not supported by the target. */
if (updateaddr) {
/* Set arg1 to the address: address + c * size */
- result = write_abstract_arg(target, 1, address, riscv_xlen(target));
+ result = write_abstract_arg(target, 1, address + c * size, riscv_xlen(target));
if (result != ERROR_OK) {
LOG_ERROR("Failed to write arg1 during read_memory_abstract().");
return result;
/* Execute the command */
result = execute_abstract_command(target, command);
- if (result != ERROR_OK) {
- LOG_ERROR("Failed to execute command read_memory_abstract().");
- return result;
+
+ if (info->has_aampostincrement == YNM_MAYBE) {
+ if (result == ERROR_OK) {
+ /* Safety: double-check that the address was really auto-incremented */
+ riscv_reg_t new_address = read_abstract_arg(target, 1, riscv_xlen(target));
+ if (new_address == address + size) {
+ LOG_DEBUG("aampostincrement is supported on this target.");
+ info->has_aampostincrement = YNM_YES;
+ } else {
+ LOG_WARNING("Buggy aampostincrement! Address not incremented correctly.");
+ info->has_aampostincrement = YNM_NO;
+ }
+ } else {
+ /* Try the same access but with postincrement disabled. */
+ command = access_memory_command(target, false, width, false, false);
+ result = execute_abstract_command(target, command);
+ if (result == ERROR_OK) {
+ LOG_DEBUG("aampostincrement is not supported on this target.");
+ info->has_aampostincrement = YNM_NO;
+ }
+ }
}
+ if (result != ERROR_OK)
+ return result;
+
/* Copy arg0 to buffer (rounded width up to nearest 32) */
riscv_reg_t value = read_abstract_arg(target, 0, width32);
buf_set_u64(p, 0, 8 * size, value);
- updateaddr = false;
+ if (info->has_aampostincrement == YNM_YES)
+ updateaddr = false;
p += size;
}
static int write_memory_abstract(struct target *target, target_addr_t address,
uint32_t size, uint32_t count, const uint8_t *buffer)
{
+ RISCV013_INFO(info);
int result = ERROR_OK;
+ bool use_aampostincrement = info->has_aampostincrement != YNM_NO;
LOG_DEBUG("writing %d words of %d bytes from 0x%" TARGET_PRIxADDR, count,
size, address);
/* Convert the size (bytes) to width (bits) */
unsigned width = size << 3;
- if (width > 64) {
- /* TODO: Add 128b support if it's ever used. Involves modifying
- read/write_abstract_arg() to work on two 64b values. */
- LOG_ERROR("Unsupported size: %d bits", width);
- return ERROR_FAIL;
- }
/* Create the command (physical address, postincrement, write) */
- uint32_t command = access_memory_command(target, false, width, true, true);
+ uint32_t command = access_memory_command(target, false, width, use_aampostincrement, true);
/* Execute the writes */
const uint8_t *p = buffer;
return result;
}
- /* Only update the address initially and let postincrement update it */
+ /* Update the address if it is the first time or aampostincrement is not supported by the target. */
if (updateaddr) {
/* Set arg1 to the address: address + c * size */
- result = write_abstract_arg(target, 1, address, riscv_xlen(target));
+ result = write_abstract_arg(target, 1, address + c * size, riscv_xlen(target));
if (result != ERROR_OK) {
LOG_ERROR("Failed to write arg1 during write_memory_abstract().");
return result;
/* Execute the command */
result = execute_abstract_command(target, command);
- if (result != ERROR_OK) {
- LOG_ERROR("Failed to execute command write_memory_abstract().");
- return result;
+
+ if (info->has_aampostincrement == YNM_MAYBE) {
+ if (result == ERROR_OK) {
+ /* Safety: double-check that the address was really auto-incremented */
+ riscv_reg_t new_address = read_abstract_arg(target, 1, riscv_xlen(target));
+ if (new_address == address + size) {
+ LOG_DEBUG("aampostincrement is supported on this target.");
+ info->has_aampostincrement = YNM_YES;
+ } else {
+ LOG_WARNING("Buggy aampostincrement! Address not incremented correctly.");
+ info->has_aampostincrement = YNM_NO;
+ }
+ } else {
+ /* Try the same access but with postincrement disabled. */
+ command = access_memory_command(target, false, width, false, true);
+ result = execute_abstract_command(target, command);
+ if (result == ERROR_OK) {
+ LOG_DEBUG("aampostincrement is not supported on this target.");
+ info->has_aampostincrement = YNM_NO;
+ }
+ }
}
- updateaddr = false;
+ if (result != ERROR_OK)
+ return result;
+
+ if (info->has_aampostincrement == YNM_YES)
+ updateaddr = false;
p += size;
}
return ERROR_FAIL;
uint64_t s0;
+ int result = ERROR_FAIL;
if (register_read(target, &s0, GDB_REGNO_S0) != ERROR_OK)
- return ERROR_FAIL;
+ goto restore_mstatus;
/* Write the program (load, increment) */
struct riscv_program program;
break;
default:
LOG_ERROR("Unsupported size: %d", size);
- return ERROR_FAIL;
+ goto restore_mstatus;
}
if (riscv_enable_virtual && has_sufficient_progbuf(target, 5) && get_field(mstatus, MSTATUS_MPRV))
riscv_program_csrrci(&program, GDB_REGNO_ZERO, CSR_DCSR_MPRVEN, GDB_REGNO_DCSR);
if (riscv_program_ebreak(&program) != ERROR_OK)
- return ERROR_FAIL;
+ goto restore_mstatus;
if (riscv_program_write(&program) != ERROR_OK)
- return ERROR_FAIL;
+ goto restore_mstatus;
/* Write address to S0, and execute buffer. */
if (write_abstract_arg(target, 0, address, riscv_xlen(target)) != ERROR_OK)
- return ERROR_FAIL;
+ goto restore_mstatus;
uint32_t command = access_register_command(target, GDB_REGNO_S0,
riscv_xlen(target), AC_ACCESS_REGISTER_WRITE |
AC_ACCESS_REGISTER_TRANSFER | AC_ACCESS_REGISTER_POSTEXEC);
if (execute_abstract_command(target, command) != ERROR_OK)
- return ERROR_FAIL;
+ goto restore_s0;
uint64_t value;
if (register_read(target, &value, GDB_REGNO_S0) != ERROR_OK)
- return ERROR_FAIL;
+ goto restore_s0;
buf_set_u64(buffer, 0, 8 * size, value);
log_memory_access(address, value, size, true);
+ result = ERROR_OK;
+restore_s0:
if (riscv_set_register(target, GDB_REGNO_S0, s0) != ERROR_OK)
- return ERROR_FAIL;
+ result = ERROR_FAIL;
- /* Restore MSTATUS */
+restore_mstatus:
if (mstatus != mstatus_old)
if (register_write_direct(target, GDB_REGNO_MSTATUS, mstatus_old))
- return ERROR_FAIL;
+ result = ERROR_FAIL;
- return ERROR_OK;
+ return result;
}
/**
if (modify_privilege(target, &mstatus, &mstatus_old) != ERROR_OK)
return ERROR_FAIL;
- /* s0 holds the next address to write to
- * s1 holds the next data value to write
+ /* s0 holds the next address to read from
+ * s1 holds the next data value read
* s2 is a counter in case increment is 0
*/
uint64_t s0, s1, s2;
return ERROR_FAIL;
if (register_read(target, &s1, GDB_REGNO_S1) != ERROR_OK)
return ERROR_FAIL;
- if (increment == 0 && register_read(target, &s2, GDB_REGNO_S1) != ERROR_OK)
+ if (increment == 0 && register_read(target, &s2, GDB_REGNO_S2) != ERROR_OK)
return ERROR_FAIL;
/* Write the program (load, increment) */
uint8_t *buffer_i = buffer;
for (uint32_t i = 0; i < count; i++, address_i += increment, buffer_i += size) {
- keep_alive();
/* TODO: This is much slower than it needs to be because we end up
* writing the address to read for every word we read. */
result = read_memory_progbuf_inner(target, address_i, size, count_i, buffer_i, increment);
if (count == 0)
return ERROR_OK;
- RISCV013_INFO(info);
- if (has_sufficient_progbuf(target, 3) && !riscv_prefer_sba)
- return read_memory_progbuf(target, address, size, count, buffer,
- increment);
-
- if ((get_field(info->sbcs, DM_SBCS_SBACCESS8) && size == 1) ||
- (get_field(info->sbcs, DM_SBCS_SBACCESS16) && size == 2) ||
- (get_field(info->sbcs, DM_SBCS_SBACCESS32) && size == 4) ||
- (get_field(info->sbcs, DM_SBCS_SBACCESS64) && size == 8) ||
- (get_field(info->sbcs, DM_SBCS_SBACCESS128) && size == 16)) {
- if (get_field(info->sbcs, DM_SBCS_SBVERSION) == 0)
- return read_memory_bus_v0(target, address, size, count, buffer,
- increment);
- else if (get_field(info->sbcs, DM_SBCS_SBVERSION) == 1)
- return read_memory_bus_v1(target, address, size, count, buffer,
- increment);
+ if (size != 1 && size != 2 && size != 4 && size != 8 && size != 16) {
+ LOG_ERROR("BUG: Unsupported size for memory read: %d", size);
+ return ERROR_FAIL;
}
- if (has_sufficient_progbuf(target, 3))
- return read_memory_progbuf(target, address, size, count, buffer,
- increment);
+ int ret = ERROR_FAIL;
+ RISCV_INFO(r);
+ RISCV013_INFO(info);
+
+ char *progbuf_result = "disabled";
+ char *sysbus_result = "disabled";
+ char *abstract_result = "disabled";
+
+ for (unsigned int i = 0; i < RISCV_NUM_MEM_ACCESS_METHODS; i++) {
+ int method = r->mem_access_methods[i];
+
+ if (method == RISCV_MEM_ACCESS_PROGBUF) {
+ if (mem_should_skip_progbuf(target, address, size, true, &progbuf_result))
+ continue;
+
+ ret = read_memory_progbuf(target, address, size, count, buffer, increment);
+
+ if (ret != ERROR_OK)
+ progbuf_result = "failed";
+ } else if (method == RISCV_MEM_ACCESS_SYSBUS) {
+ if (mem_should_skip_sysbus(target, address, size, increment, true, &sysbus_result))
+ continue;
+
+ if (get_field(info->sbcs, DM_SBCS_SBVERSION) == 0)
+ ret = read_memory_bus_v0(target, address, size, count, buffer, increment);
+ else if (get_field(info->sbcs, DM_SBCS_SBVERSION) == 1)
+ ret = read_memory_bus_v1(target, address, size, count, buffer, increment);
- return read_memory_abstract(target, address, size, count, buffer,
- increment);
+ if (ret != ERROR_OK)
+ sysbus_result = "failed";
+ } else if (method == RISCV_MEM_ACCESS_ABSTRACT) {
+ if (mem_should_skip_abstract(target, address, size, increment, true, &abstract_result))
+ continue;
+
+ ret = read_memory_abstract(target, address, size, count, buffer, increment);
+
+ if (ret != ERROR_OK)
+ abstract_result = "failed";
+ } else if (method == RISCV_MEM_ACCESS_UNSPECIFIED)
+ /* No further mem access method to try. */
+ break;
+
+ log_mem_access_result(target, ret == ERROR_OK, method, true);
+
+ if (ret == ERROR_OK)
+ return ret;
+ }
+
+ LOG_ERROR("Target %s: Failed to read memory (addr=0x%" PRIx64 ")", target_name(target), address);
+ LOG_ERROR(" progbuf=%s, sysbus=%s, abstract=%s", progbuf_result, sysbus_result, abstract_result);
+ return ret;
}
static int write_memory_bus_v0(struct target *target, target_addr_t address,
int result;
- sb_write_address(target, next_address);
+ sb_write_address(target, next_address, true);
while (next_address < end_address) {
LOG_DEBUG("transferring burst starting at address 0x%" TARGET_PRIxADDR,
next_address);
next_address += size;
}
+ /* Execute the batch of writes */
result = batch_run(target, batch);
riscv_batch_free(batch);
if (result != ERROR_OK)
return result;
+ /* Read sbcs value.
+ * At the same time, detect if DMI busy has occurred during the batch write. */
bool dmi_busy_encountered;
if (dmi_op(target, &sbcs, &dmi_busy_encountered, DMI_OP_READ,
- DM_SBCS, 0, false, false) != ERROR_OK)
+ DM_SBCS, 0, false, true) != ERROR_OK)
return ERROR_FAIL;
+ if (dmi_busy_encountered)
+ LOG_DEBUG("DMI busy encountered during system bus write.");
+ /* Wait until sbbusy goes low */
time_t start = time(NULL);
- bool dmi_busy = dmi_busy_encountered;
- while (get_field(sbcs, DM_SBCS_SBBUSY) || dmi_busy) {
+ while (get_field(sbcs, DM_SBCS_SBBUSY)) {
if (time(NULL) - start > riscv_command_timeout_sec) {
LOG_ERROR("Timed out after %ds waiting for sbbusy to go low (sbcs=0x%x). "
- "Increase the timeout with riscv set_command_timeout_sec.",
- riscv_command_timeout_sec, sbcs);
+ "Increase the timeout with riscv set_command_timeout_sec.",
+ riscv_command_timeout_sec, sbcs);
return ERROR_FAIL;
}
-
- if (dmi_op(target, &sbcs, &dmi_busy, DMI_OP_READ,
- DM_SBCS, 0, false, true) != ERROR_OK)
+ if (dmi_read(target, &sbcs, DM_SBCS) != ERROR_OK)
return ERROR_FAIL;
}
if (get_field(sbcs, DM_SBCS_SBBUSYERROR)) {
- /* We wrote while the target was busy. Slow down and try again. */
- dmi_write(target, DM_SBCS, DM_SBCS_SBBUSYERROR);
+ /* We wrote while the target was busy. */
+ LOG_DEBUG("Sbbusyerror encountered during system bus write.");
+ /* Clear the sticky error flag. */
+ dmi_write(target, DM_SBCS, sbcs | DM_SBCS_SBBUSYERROR);
+ /* Slow down before trying again. */
info->bus_master_write_delay += info->bus_master_write_delay / 10 + 1;
}
if (get_field(sbcs, DM_SBCS_SBBUSYERROR) || dmi_busy_encountered) {
+ /* Recover from the case when the write commands were issued too fast.
+ * Determine the address from which to resume writing. */
next_address = sb_read_address(target);
if (next_address < address) {
/* This should never happen, probably buggy hardware. */
- LOG_DEBUG("unexpected system bus address 0x%" TARGET_PRIxADDR,
- next_address);
+ LOG_DEBUG("unexpected sbaddress=0x%" TARGET_PRIxADDR
+ " - buggy sbautoincrement in hw?", next_address);
+ /* Fail the whole operation. */
return ERROR_FAIL;
}
-
+ /* Try again - resume writing. */
continue;
}
- unsigned error = get_field(sbcs, DM_SBCS_SBERROR);
- if (error != 0) {
- /* Some error indicating the bus access failed, but not because of
- * something we did wrong. */
+ unsigned int sberror = get_field(sbcs, DM_SBCS_SBERROR);
+ if (sberror != 0) {
+ /* Sberror indicates the bus access failed, but not because we issued the writes
+ * too fast. Cannot recover. Sbaddress holds the address where the error occurred
+ * (unless sbautoincrement in the HW is buggy).
+ */
+ target_addr_t sbaddress = sb_read_address(target);
+ LOG_DEBUG("System bus access failed with sberror=%u (sbaddress=0x%" TARGET_PRIxADDR ")",
+ sberror, sbaddress);
+ if (sbaddress < address) {
+ /* This should never happen, probably buggy hardware.
+ * Make a note to the user not to trust the sbaddress value. */
+ LOG_DEBUG("unexpected sbaddress=0x%" TARGET_PRIxADDR
+ " - buggy sbautoincrement in hw?", next_address);
+ }
+ /* Clear the sticky error flag */
dmi_write(target, DM_SBCS, DM_SBCS_SBERROR);
+ /* Fail the whole operation */
return ERROR_FAIL;
}
}
static int write_memory(struct target *target, target_addr_t address,
uint32_t size, uint32_t count, const uint8_t *buffer)
{
+ if (size != 1 && size != 2 && size != 4 && size != 8 && size != 16) {
+ LOG_ERROR("BUG: Unsupported size for memory write: %d", size);
+ return ERROR_FAIL;
+ }
+
+ int ret = ERROR_FAIL;
+ RISCV_INFO(r);
RISCV013_INFO(info);
- if (has_sufficient_progbuf(target, 3) && !riscv_prefer_sba)
- return write_memory_progbuf(target, address, size, count, buffer);
+ char *progbuf_result = "disabled";
+ char *sysbus_result = "disabled";
+ char *abstract_result = "disabled";
- if ((get_field(info->sbcs, DM_SBCS_SBACCESS8) && size == 1) ||
- (get_field(info->sbcs, DM_SBCS_SBACCESS16) && size == 2) ||
- (get_field(info->sbcs, DM_SBCS_SBACCESS32) && size == 4) ||
- (get_field(info->sbcs, DM_SBCS_SBACCESS64) && size == 8) ||
- (get_field(info->sbcs, DM_SBCS_SBACCESS128) && size == 16)) {
- if (get_field(info->sbcs, DM_SBCS_SBVERSION) == 0)
- return write_memory_bus_v0(target, address, size, count, buffer);
- else if (get_field(info->sbcs, DM_SBCS_SBVERSION) == 1)
- return write_memory_bus_v1(target, address, size, count, buffer);
- }
+ for (unsigned int i = 0; i < RISCV_NUM_MEM_ACCESS_METHODS; i++) {
+ int method = r->mem_access_methods[i];
- if (has_sufficient_progbuf(target, 3))
- return write_memory_progbuf(target, address, size, count, buffer);
+ if (method == RISCV_MEM_ACCESS_PROGBUF) {
+ if (mem_should_skip_progbuf(target, address, size, false, &progbuf_result))
+ continue;
+
+ ret = write_memory_progbuf(target, address, size, count, buffer);
- return write_memory_abstract(target, address, size, count, buffer);
+ if (ret != ERROR_OK)
+ progbuf_result = "failed";
+ } else if (method == RISCV_MEM_ACCESS_SYSBUS) {
+ if (mem_should_skip_sysbus(target, address, size, 0, false, &sysbus_result))
+ continue;
+
+ if (get_field(info->sbcs, DM_SBCS_SBVERSION) == 0)
+ ret = write_memory_bus_v0(target, address, size, count, buffer);
+ else if (get_field(info->sbcs, DM_SBCS_SBVERSION) == 1)
+ ret = write_memory_bus_v1(target, address, size, count, buffer);
+
+ if (ret != ERROR_OK)
+ sysbus_result = "failed";
+ } else if (method == RISCV_MEM_ACCESS_ABSTRACT) {
+ if (mem_should_skip_abstract(target, address, size, 0, false, &abstract_result))
+ continue;
+
+ ret = write_memory_abstract(target, address, size, count, buffer);
+
+ if (ret != ERROR_OK)
+ abstract_result = "failed";
+ } else if (method == RISCV_MEM_ACCESS_UNSPECIFIED)
+ /* No further mem access method to try. */
+ break;
+
+ log_mem_access_result(target, ret == ERROR_OK, method, false);
+
+ if (ret == ERROR_OK)
+ return ret;
+ }
+
+ LOG_ERROR("Target %s: Failed to write memory (addr=0x%" PRIx64 ")", target_name(target), address);
+ LOG_ERROR(" progbuf=%s, sysbus=%s, abstract=%s", progbuf_result, sysbus_result, abstract_result);
+ return ret;
}
static int arch_state(struct target *target)
.write_memory = write_memory,
- .arch_state = arch_state,
+ .arch_state = arch_state
};
/*** 0.13-specific implementations of various RISC-V helper functions. ***/
static int riscv013_get_register(struct target *target,
- riscv_reg_t *value, int hid, int rid)
+ riscv_reg_t *value, int rid)
{
- LOG_DEBUG("[%d] reading register %s on hart %d", target->coreid,
- gdb_regno_name(rid), hid);
+ LOG_DEBUG("[%s] reading register %s", target_name(target),
+ gdb_regno_name(rid));
- riscv_set_current_hartid(target, hid);
+ if (riscv_select_current_hart(target) != ERROR_OK)
+ return ERROR_FAIL;
int result = ERROR_OK;
if (rid == GDB_REGNO_PC) {
uint64_t dcsr;
/* TODO: move this into riscv.c. */
result = register_read(target, &dcsr, GDB_REGNO_DCSR);
- *value = get_field(dcsr, CSR_DCSR_PRV);
+ *value = set_field(0, VIRT_PRIV_V, get_field(dcsr, CSR_DCSR_V));
+ *value = set_field(*value, VIRT_PRIV_PRV, get_field(dcsr, CSR_DCSR_PRV));
} else {
result = register_read(target, value, rid);
if (result != ERROR_OK)
return result;
}
-static int riscv013_set_register(struct target *target, int hid, int rid, uint64_t value)
+static int riscv013_set_register(struct target *target, int rid, uint64_t value)
{
- LOG_DEBUG("[%d] writing 0x%" PRIx64 " to register %s on hart %d",
- target->coreid, value, gdb_regno_name(rid), hid);
-
- riscv_set_current_hartid(target, hid);
+ riscv013_select_current_hart(target);
+ LOG_DEBUG("[%d] writing 0x%" PRIx64 " to register %s",
+ target->coreid, value, gdb_regno_name(rid));
if (rid <= GDB_REGNO_XPR31) {
return register_write_direct(target, rid, value);
} else if (rid == GDB_REGNO_PRIV) {
uint64_t dcsr;
register_read(target, &dcsr, GDB_REGNO_DCSR);
- dcsr = set_field(dcsr, CSR_DCSR_PRV, value);
+ dcsr = set_field(dcsr, CSR_DCSR_PRV, get_field(value, VIRT_PRIV_PRV));
+ dcsr = set_field(dcsr, CSR_DCSR_V, get_field(value, VIRT_PRIV_V));
return register_write_direct(target, GDB_REGNO_DCSR, dcsr);
} else {
return register_write_direct(target, rid, value);
static int riscv013_halt_go(struct target *target)
{
bool use_hasel = false;
- if (!riscv_rtos_enabled(target)) {
- if (select_prepped_harts(target, &use_hasel) != ERROR_OK)
- return ERROR_FAIL;
- }
+ if (select_prepped_harts(target, &use_hasel) != ERROR_OK)
+ return ERROR_FAIL;
RISCV_INFO(r);
LOG_DEBUG("halting hart %d", r->current_hartid);
static int riscv013_resume_go(struct target *target)
{
bool use_hasel = false;
- if (!riscv_rtos_enabled(target)) {
- if (select_prepped_harts(target, &use_hasel) != ERROR_OK)
- return ERROR_FAIL;
- }
+ if (select_prepped_harts(target, &use_hasel) != ERROR_OK)
+ return ERROR_FAIL;
return riscv013_step_or_resume_current_hart(target, false, use_hasel);
}
if (result != ERROR_OK)
return RISCV_HALT_UNKNOWN;
+ LOG_DEBUG("dcsr.cause: 0x%" PRIx64, get_field(dcsr, CSR_DCSR_CAUSE));
+
switch (get_field(dcsr, CSR_DCSR_CAUSE)) {
case CSR_DCSR_CAUSE_SWBP:
return RISCV_HALT_BREAKPOINT;
return RISCV_HALT_GROUP;
}
- LOG_ERROR("Unknown DCSR cause field: %x", (int)get_field(dcsr, CSR_DCSR_CAUSE));
+ LOG_ERROR("Unknown DCSR cause field: 0x%" PRIx64, get_field(dcsr, CSR_DCSR_CAUSE));
LOG_ERROR(" dcsr=0x%016lx", (long)dcsr);
return RISCV_HALT_UNKNOWN;
}
/* Clear the error status. */
dmi_write(target, DM_ABSTRACTCS, DM_ABSTRACTCS_CMDERR);
}
-
-#ifdef _WIN32
-#define FILE_SEP '\\'
-#else
-#define FILE_SEP '/'
-#endif
-#define COMPLIANCE_TEST(b, message) \
-{ \
- const char *last_sep = strrchr(__FILE__, FILE_SEP); \
- const char *fname = (!last_sep ? __FILE__ : last_sep + 1); \
- LOG_INFO("Executing test %d (%s:%d): %s", total_tests, fname, __LINE__, message); \
- int pass = 0; \
- if (b) { \
- pass = 1; \
- passed_tests++; \
- } \
- LOG_INFO(" %s", (pass) ? "PASSED" : "FAILED"); \
- assert(pass); \
- total_tests++; \
-}
-
-#define COMPLIANCE_MUST_PASS(b) COMPLIANCE_TEST(ERROR_OK == (b), "Regular calls must return ERROR_OK")
-
-#define COMPLIANCE_READ(target, addr, value) COMPLIANCE_MUST_PASS(dmi_read(target, addr, value))
-#define COMPLIANCE_WRITE(target, addr, value) COMPLIANCE_MUST_PASS(dmi_write(target, addr, value))
-
-#define COMPLIANCE_CHECK_RO(target, addr) \
-{ \
- uint32_t orig; \
- uint32_t inverse; \
- COMPLIANCE_READ(target, &orig, addr); \
- COMPLIANCE_WRITE(target, addr, ~orig); \
- COMPLIANCE_READ(target, &inverse, addr); \
- COMPLIANCE_TEST(orig == inverse, "Register must be read-only"); \
-}
-
-int riscv013_test_compliance(struct target *target)
-{
- LOG_INFO("Basic compliance test against RISC-V Debug Spec v0.13");
- LOG_INFO("This test is not complete, and not well supported.");
- LOG_INFO("Your core might pass this test without being compliant.");
- LOG_INFO("Your core might fail this test while being compliant.");
- LOG_INFO("Use your judgment, and please contribute improvements.");
-
- if (!riscv_rtos_enabled(target)) {
- LOG_ERROR("Please run with -rtos riscv to run compliance test.");
- return ERROR_FAIL;
- }
-
- if (!target_was_examined(target)) {
- LOG_ERROR("Cannot run compliance test, because target has not yet "
- "been examined, or the examination failed.\n");
- return ERROR_FAIL;
- }
-
- int total_tests = 0;
- int passed_tests = 0;
-
- uint32_t dmcontrol_orig = DM_DMCONTROL_DMACTIVE;
- uint32_t dmcontrol;
- uint32_t testvar;
- uint32_t testvar_read;
- riscv_reg_t value;
- RISCV013_INFO(info);
-
- /* All the bits of HARTSEL are covered by the examine sequence. */
-
- /* hartreset */
- /* This field is optional. Either we can read and write it to 1/0,
- or it is tied to 0. This check doesn't really do anything, but
- it does attempt to set the bit to 1 and then back to 0, which needs to
- work if its implemented. */
- COMPLIANCE_WRITE(target, DM_DMCONTROL, set_field(dmcontrol_orig, DM_DMCONTROL_HARTRESET, 1));
- COMPLIANCE_WRITE(target, DM_DMCONTROL, set_field(dmcontrol_orig, DM_DMCONTROL_HARTRESET, 0));
- COMPLIANCE_READ(target, &dmcontrol, DM_DMCONTROL);
- COMPLIANCE_TEST((get_field(dmcontrol, DM_DMCONTROL_HARTRESET) == 0),
- "DMCONTROL.hartreset can be 0 or RW.");
-
- /* hasel */
- COMPLIANCE_WRITE(target, DM_DMCONTROL, set_field(dmcontrol_orig, DM_DMCONTROL_HASEL, 1));
- COMPLIANCE_WRITE(target, DM_DMCONTROL, set_field(dmcontrol_orig, DM_DMCONTROL_HASEL, 0));
- COMPLIANCE_READ(target, &dmcontrol, DM_DMCONTROL);
- COMPLIANCE_TEST((get_field(dmcontrol, DM_DMCONTROL_HASEL) == 0),
- "DMCONTROL.hasel can be 0 or RW.");
- /* TODO: test that hamask registers exist if hasel does. */
-
- /* haltreq */
- COMPLIANCE_MUST_PASS(riscv_halt(target));
- /* This bit is not actually readable according to the spec, so nothing to check.*/
-
- /* DMSTATUS */
- COMPLIANCE_CHECK_RO(target, DM_DMSTATUS);
-
- /* resumereq */
- /* This bit is not actually readable according to the spec, so nothing to check.*/
- COMPLIANCE_MUST_PASS(riscv_resume(target, true, 0, false, false, false));
-
- /* Halt all harts again so the test can continue.*/
- COMPLIANCE_MUST_PASS(riscv_halt(target));
-
- /* HARTINFO: Read-Only. This is per-hart, so need to adjust hartsel. */
- uint32_t hartinfo;
- COMPLIANCE_READ(target, &hartinfo, DM_HARTINFO);
- for (int hartsel = 0; hartsel < riscv_count_harts(target); hartsel++) {
- COMPLIANCE_MUST_PASS(riscv_set_current_hartid(target, hartsel));
-
- COMPLIANCE_CHECK_RO(target, DM_HARTINFO);
-
- /* $dscratch CSRs */
- uint32_t nscratch = get_field(hartinfo, DM_HARTINFO_NSCRATCH);
- for (unsigned int d = 0; d < nscratch; d++) {
- riscv_reg_t testval, testval_read;
- /* Because DSCRATCH0 is not guaranteed to last across PB executions, need to put
- this all into one PB execution. Which may not be possible on all implementations.*/
- if (info->progbufsize >= 5) {
- for (testval = 0x0011223300112233;
- testval != 0xDEAD;
- testval = testval == 0x0011223300112233 ? ~testval : 0xDEAD) {
- COMPLIANCE_TEST(register_write_direct(target, GDB_REGNO_S0, testval) == ERROR_OK,
- "Need to be able to write S0 in order to test DSCRATCH0.");
- struct riscv_program program32;
- riscv_program_init(&program32, target);
- riscv_program_csrw(&program32, GDB_REGNO_S0, GDB_REGNO_DSCRATCH0 + d);
- riscv_program_csrr(&program32, GDB_REGNO_S1, GDB_REGNO_DSCRATCH0 + d);
- riscv_program_fence(&program32);
- riscv_program_ebreak(&program32);
- COMPLIANCE_TEST(riscv_program_exec(&program32, target) == ERROR_OK,
- "Accessing DSCRATCH0 with program buffer should succeed.");
- COMPLIANCE_TEST(register_read_direct(target, &testval_read, GDB_REGNO_S1) == ERROR_OK,
- "Need to be able to read S1 in order to test DSCRATCH0.");
- if (riscv_xlen(target) > 32) {
- COMPLIANCE_TEST(testval == testval_read,
- "All DSCRATCH0 registers in HARTINFO must be R/W.");
- } else {
- COMPLIANCE_TEST(testval_read == (testval & 0xFFFFFFFF),
- "All DSCRATCH0 registers in HARTINFO must be R/W.");
- }
- }
- }
- }
- /* TODO: dataaccess */
- if (get_field(hartinfo, DM_HARTINFO_DATAACCESS)) {
- /* TODO: Shadowed in memory map. */
- /* TODO: datasize */
- /* TODO: dataaddr */
- } else {
- /* TODO: Shadowed in CSRs. */
- /* TODO: datasize */
- /* TODO: dataaddr */
- }
-
- }
-
- /* HALTSUM -- TODO: More than 32 harts. Would need to loop over this to set hartsel */
- /* TODO: HALTSUM2, HALTSUM3 */
- /* HALTSUM0 */
- uint32_t expected_haltsum0 = 0;
- for (int i = 0; i < MIN(riscv_count_harts(target), 32); i++)
- expected_haltsum0 |= (1 << i);
-
- COMPLIANCE_READ(target, &testvar_read, DM_HALTSUM0);
- COMPLIANCE_TEST(testvar_read == expected_haltsum0,
- "HALTSUM0 should report summary of up to 32 halted harts");
-
- COMPLIANCE_WRITE(target, DM_HALTSUM0, 0xffffffff);
- COMPLIANCE_READ(target, &testvar_read, DM_HALTSUM0);
- COMPLIANCE_TEST(testvar_read == expected_haltsum0, "HALTSUM0 should be R/O");
-
- COMPLIANCE_WRITE(target, DM_HALTSUM0, 0x0);
- COMPLIANCE_READ(target, &testvar_read, DM_HALTSUM0);
- COMPLIANCE_TEST(testvar_read == expected_haltsum0, "HALTSUM0 should be R/O");
-
- /* HALTSUM1 */
- uint32_t expected_haltsum1 = 0;
- for (int i = 0; i < MIN(riscv_count_harts(target), 1024); i += 32)
- expected_haltsum1 |= (1 << (i/32));
-
- COMPLIANCE_READ(target, &testvar_read, DM_HALTSUM1);
- COMPLIANCE_TEST(testvar_read == expected_haltsum1,
- "HALTSUM1 should report summary of up to 1024 halted harts");
-
- COMPLIANCE_WRITE(target, DM_HALTSUM1, 0xffffffff);
- COMPLIANCE_READ(target, &testvar_read, DM_HALTSUM1);
- COMPLIANCE_TEST(testvar_read == expected_haltsum1, "HALTSUM1 should be R/O");
-
- COMPLIANCE_WRITE(target, DM_HALTSUM1, 0x0);
- COMPLIANCE_READ(target, &testvar_read, DM_HALTSUM1);
- COMPLIANCE_TEST(testvar_read == expected_haltsum1, "HALTSUM1 should be R/O");
-
- /* TODO: HAWINDOWSEL */
-
- /* TODO: HAWINDOW */
-
- /* ABSTRACTCS */
-
- uint32_t abstractcs;
- COMPLIANCE_READ(target, &abstractcs, DM_ABSTRACTCS);
-
- /* Check that all reported Data Words are really R/W */
- for (int invert = 0; invert < 2; invert++) {
- for (unsigned int i = 0; i < get_field(abstractcs, DM_ABSTRACTCS_DATACOUNT); i++) {
- testvar = (i + 1) * 0x11111111;
- if (invert)
- testvar = ~testvar;
- COMPLIANCE_WRITE(target, DM_DATA0 + i, testvar);
- }
- for (unsigned int i = 0; i < get_field(abstractcs, DM_ABSTRACTCS_DATACOUNT); i++) {
- testvar = (i + 1) * 0x11111111;
- if (invert)
- testvar = ~testvar;
- COMPLIANCE_READ(target, &testvar_read, DM_DATA0 + i);
- COMPLIANCE_TEST(testvar_read == testvar, "All reported DATA words must be R/W");
- }
- }
-
- /* Check that all reported ProgBuf words are really R/W */
- for (int invert = 0; invert < 2; invert++) {
- for (unsigned int i = 0; i < get_field(abstractcs, DM_ABSTRACTCS_PROGBUFSIZE); i++) {
- testvar = (i + 1) * 0x11111111;
- if (invert)
- testvar = ~testvar;
- COMPLIANCE_WRITE(target, DM_PROGBUF0 + i, testvar);
- }
- for (unsigned int i = 0; i < get_field(abstractcs, DM_ABSTRACTCS_PROGBUFSIZE); i++) {
- testvar = (i + 1) * 0x11111111;
- if (invert)
- testvar = ~testvar;
- COMPLIANCE_READ(target, &testvar_read, DM_PROGBUF0 + i);
- COMPLIANCE_TEST(testvar_read == testvar, "All reported PROGBUF words must be R/W");
- }
- }
-
- /* TODO: Cause and clear all error types */
-
- /* COMMAND
- According to the spec, this register is only W, so can't really check the read result.
- But at any rate, this is not legal and should cause an error. */
- COMPLIANCE_WRITE(target, DM_COMMAND, 0xAAAAAAAA);
- COMPLIANCE_READ(target, &testvar_read, DM_ABSTRACTCS);
- COMPLIANCE_TEST(get_field(testvar_read, DM_ABSTRACTCS_CMDERR) == CMDERR_NOT_SUPPORTED,
- "Illegal COMMAND should result in UNSUPPORTED");
- COMPLIANCE_WRITE(target, DM_ABSTRACTCS, DM_ABSTRACTCS_CMDERR);
-
- COMPLIANCE_WRITE(target, DM_COMMAND, 0x55555555);
- COMPLIANCE_READ(target, &testvar_read, DM_ABSTRACTCS);
- COMPLIANCE_TEST(get_field(testvar_read, DM_ABSTRACTCS_CMDERR) == CMDERR_NOT_SUPPORTED,
- "Illegal COMMAND should result in UNSUPPORTED");
- COMPLIANCE_WRITE(target, DM_ABSTRACTCS, DM_ABSTRACTCS_CMDERR);
-
- /* Basic Abstract Commands */
- for (unsigned int i = 1; i < 32; i = i << 1) {
- riscv_reg_t testval = i | ((i + 1ULL) << 32);
- riscv_reg_t testval_read;
- COMPLIANCE_TEST(register_write_direct(target, GDB_REGNO_ZERO + i, testval) == ERROR_OK,
- "GPR Writes should be supported.");
- COMPLIANCE_MUST_PASS(write_abstract_arg(target, 0, 0xDEADBEEFDEADBEEF, 64));
- COMPLIANCE_TEST(register_read_direct(target, &testval_read, GDB_REGNO_ZERO + i) == ERROR_OK,
- "GPR Reads should be supported.");
- if (riscv_xlen(target) > 32) {
- /* Dummy comment to satisfy linter, since removing the branches here doesn't actually compile. */
- COMPLIANCE_TEST(testval == testval_read, "GPR Reads and writes should be supported.");
- } else {
- /* Dummy comment to satisfy linter, since removing the branches here doesn't actually compile. */
- COMPLIANCE_TEST((testval & 0xFFFFFFFF) == testval_read, "GPR Reads and writes should be supported.");
- }
- }
-
- /* ABSTRACTAUTO
- See which bits are actually writable */
- COMPLIANCE_WRITE(target, DM_ABSTRACTAUTO, 0xFFFFFFFF);
- uint32_t abstractauto;
- uint32_t busy;
- COMPLIANCE_READ(target, &abstractauto, DM_ABSTRACTAUTO);
- COMPLIANCE_WRITE(target, DM_ABSTRACTAUTO, 0x0);
- if (abstractauto > 0) {
- /* This mechanism only works when you have a reasonable sized progbuf, which is not
- a true compliance requirement. */
- if (info->progbufsize >= 3) {
-
- testvar = 0;
- COMPLIANCE_TEST(register_write_direct(target, GDB_REGNO_S0, 0) == ERROR_OK,
- "Need to be able to write S0 to test ABSTRACTAUTO");
- struct riscv_program program;
- COMPLIANCE_MUST_PASS(riscv_program_init(&program, target));
- /* This is also testing that WFI() is a NOP during debug mode. */
- COMPLIANCE_MUST_PASS(riscv_program_insert(&program, wfi()));
- COMPLIANCE_MUST_PASS(riscv_program_addi(&program, GDB_REGNO_S0, GDB_REGNO_S0, 1));
- COMPLIANCE_MUST_PASS(riscv_program_ebreak(&program));
- COMPLIANCE_WRITE(target, DM_ABSTRACTAUTO, 0x0);
- COMPLIANCE_MUST_PASS(riscv_program_exec(&program, target));
- testvar++;
- COMPLIANCE_WRITE(target, DM_ABSTRACTAUTO, 0xFFFFFFFF);
- COMPLIANCE_READ(target, &abstractauto, DM_ABSTRACTAUTO);
- uint32_t autoexec_data = get_field(abstractauto, DM_ABSTRACTAUTO_AUTOEXECDATA);
- uint32_t autoexec_progbuf = get_field(abstractauto, DM_ABSTRACTAUTO_AUTOEXECPROGBUF);
- for (unsigned int i = 0; i < 12; i++) {
- COMPLIANCE_READ(target, &testvar_read, DM_DATA0 + i);
- do {
- COMPLIANCE_READ(target, &testvar_read, DM_ABSTRACTCS);
- busy = get_field(testvar_read, DM_ABSTRACTCS_BUSY);
- } while (busy);
- if (autoexec_data & (1 << i)) {
- COMPLIANCE_TEST(i < get_field(abstractcs, DM_ABSTRACTCS_DATACOUNT),
- "AUTOEXEC may be writable up to DATACOUNT bits.");
- testvar++;
- }
- }
- for (unsigned int i = 0; i < 16; i++) {
- COMPLIANCE_READ(target, &testvar_read, DM_PROGBUF0 + i);
- do {
- COMPLIANCE_READ(target, &testvar_read, DM_ABSTRACTCS);
- busy = get_field(testvar_read, DM_ABSTRACTCS_BUSY);
- } while (busy);
- if (autoexec_progbuf & (1 << i)) {
- COMPLIANCE_TEST(i < get_field(abstractcs, DM_ABSTRACTCS_PROGBUFSIZE),
- "AUTOEXEC may be writable up to PROGBUFSIZE bits.");
- testvar++;
- }
- }
-
- COMPLIANCE_WRITE(target, DM_ABSTRACTAUTO, 0);
- COMPLIANCE_TEST(register_read_direct(target, &value, GDB_REGNO_S0) == ERROR_OK,
- "Need to be able to read S0 to test ABSTRACTAUTO");
-
- COMPLIANCE_TEST(testvar == value,
- "ABSTRACTAUTO should cause COMMAND to run the expected number of times.");
- }
- }
-
- /* Single-Step each hart. */
- for (int hartsel = 0; hartsel < riscv_count_harts(target); hartsel++) {
- COMPLIANCE_MUST_PASS(riscv_set_current_hartid(target, hartsel));
- COMPLIANCE_MUST_PASS(riscv013_on_step(target));
- COMPLIANCE_MUST_PASS(riscv013_step_current_hart(target));
- COMPLIANCE_TEST(riscv_halt_reason(target, hartsel) == RISCV_HALT_SINGLESTEP,
- "Single Step should result in SINGLESTEP");
- }
-
- /* Core Register Tests */
- uint64_t bogus_dpc = 0xdeadbeef;
- for (int hartsel = 0; hartsel < riscv_count_harts(target); hartsel++) {
- COMPLIANCE_MUST_PASS(riscv_set_current_hartid(target, hartsel));
-
- /* DCSR Tests */
- COMPLIANCE_MUST_PASS(register_write_direct(target, GDB_REGNO_DCSR, 0x0));
- COMPLIANCE_MUST_PASS(register_read_direct(target, &value, GDB_REGNO_DCSR));
- COMPLIANCE_TEST(value != 0, "Not all bits in DCSR are writable by Debugger");
- COMPLIANCE_MUST_PASS(register_write_direct(target, GDB_REGNO_DCSR, 0xFFFFFFFF));
- COMPLIANCE_MUST_PASS(register_read_direct(target, &value, GDB_REGNO_DCSR));
- COMPLIANCE_TEST(value != 0, "At least some bits in DCSR must be 1");
-
- /* DPC. Note that DPC is sign-extended. */
- riscv_reg_t dpcmask = 0xFFFFFFFCUL;
- riscv_reg_t dpc;
-
- if (riscv_xlen(target) > 32)
- dpcmask |= (0xFFFFFFFFULL << 32);
-
- if (riscv_supports_extension(target, riscv_current_hartid(target), 'C'))
- dpcmask |= 0x2;
-
- COMPLIANCE_MUST_PASS(register_write_direct(target, GDB_REGNO_DPC, dpcmask));
- COMPLIANCE_MUST_PASS(register_read_direct(target, &dpc, GDB_REGNO_DPC));
- COMPLIANCE_TEST(dpcmask == dpc,
- "DPC must be sign-extended to XLEN and writable to all-1s (except the least significant bits)");
- COMPLIANCE_MUST_PASS(register_write_direct(target, GDB_REGNO_DPC, 0));
- COMPLIANCE_MUST_PASS(register_read_direct(target, &dpc, GDB_REGNO_DPC));
- COMPLIANCE_TEST(dpc == 0, "DPC must be writable to 0.");
- if (hartsel == 0)
- bogus_dpc = dpc; /* For a later test step */
- }
-
- /* NDMRESET
- Asserting non-debug module reset should not reset Debug Module state.
- But it should reset Hart State, e.g. DPC should get a different value.
- Also make sure that DCSR reports cause of 'HALT' even though previously we single-stepped.
- */
-
- /* Write some registers. They should not be impacted by ndmreset. */
- COMPLIANCE_WRITE(target, DM_COMMAND, 0xFFFFFFFF);
-
- for (unsigned int i = 0; i < get_field(abstractcs, DM_ABSTRACTCS_PROGBUFSIZE); i++) {
- testvar = (i + 1) * 0x11111111;
- COMPLIANCE_WRITE(target, DM_PROGBUF0 + i, testvar);
- }
-
- for (unsigned int i = 0; i < get_field(abstractcs, DM_ABSTRACTCS_DATACOUNT); i++) {
- testvar = (i + 1) * 0x11111111;
- COMPLIANCE_WRITE(target, DM_DATA0 + i, testvar);
- }
-
- COMPLIANCE_WRITE(target, DM_ABSTRACTAUTO, 0xFFFFFFFF);
- COMPLIANCE_READ(target, &abstractauto, DM_ABSTRACTAUTO);
-
- /* Pulse reset. */
- target->reset_halt = true;
- COMPLIANCE_MUST_PASS(riscv_set_current_hartid(target, 0));
- COMPLIANCE_TEST(assert_reset(target) == ERROR_OK, "Must be able to assert NDMRESET");
- COMPLIANCE_TEST(deassert_reset(target) == ERROR_OK, "Must be able to deassert NDMRESET");
-
- /* Verify that most stuff is not affected by ndmreset. */
- COMPLIANCE_READ(target, &testvar_read, DM_ABSTRACTCS);
- COMPLIANCE_TEST(get_field(testvar_read, DM_ABSTRACTCS_CMDERR) == CMDERR_NOT_SUPPORTED,
- "NDMRESET should not affect DM_ABSTRACTCS");
- COMPLIANCE_READ(target, &testvar_read, DM_ABSTRACTAUTO);
- COMPLIANCE_TEST(testvar_read == abstractauto, "NDMRESET should not affect DM_ABSTRACTAUTO");
-
- /* Clean up to avoid future test failures */
- COMPLIANCE_WRITE(target, DM_ABSTRACTCS, DM_ABSTRACTCS_CMDERR);
- COMPLIANCE_WRITE(target, DM_ABSTRACTAUTO, 0);
-
- for (unsigned int i = 0; i < get_field(abstractcs, DM_ABSTRACTCS_PROGBUFSIZE); i++) {
- testvar = (i + 1) * 0x11111111;
- COMPLIANCE_READ(target, &testvar_read, DM_PROGBUF0 + i);
- COMPLIANCE_TEST(testvar_read == testvar, "PROGBUF words must not be affected by NDMRESET");
- }
-
- for (unsigned int i = 0; i < get_field(abstractcs, DM_ABSTRACTCS_DATACOUNT); i++) {
- testvar = (i + 1) * 0x11111111;
- COMPLIANCE_READ(target, &testvar_read, DM_DATA0 + i);
- COMPLIANCE_TEST(testvar_read == testvar, "DATA words must not be affected by NDMRESET");
- }
-
- /* Verify that DPC *is* affected by ndmreset. Since we don't know what it *should* be,
- just verify that at least it's not the bogus value anymore. */
-
- COMPLIANCE_TEST(bogus_dpc != 0xdeadbeef, "BOGUS DPC should have been set somehow (bug in compliance test)");
- COMPLIANCE_MUST_PASS(register_read_direct(target, &value, GDB_REGNO_DPC));
- COMPLIANCE_TEST(bogus_dpc != value, "NDMRESET should move DPC to reset value.");
-
- COMPLIANCE_TEST(riscv_halt_reason(target, 0) == RISCV_HALT_INTERRUPT,
- "After NDMRESET halt, DCSR should report cause of halt");
-
- /* DMACTIVE -- deasserting DMACTIVE should reset all the above values. */
-
- /* Toggle dmactive */
- COMPLIANCE_WRITE(target, DM_DMCONTROL, 0);
- COMPLIANCE_WRITE(target, DM_DMCONTROL, DM_DMCONTROL_DMACTIVE);
- COMPLIANCE_READ(target, &testvar_read, DM_ABSTRACTCS);
- COMPLIANCE_TEST(get_field(testvar_read, DM_ABSTRACTCS_CMDERR) == 0, "ABSTRACTCS.cmderr should reset to 0");
- COMPLIANCE_READ(target, &testvar_read, DM_ABSTRACTAUTO);
- COMPLIANCE_TEST(testvar_read == 0, "ABSTRACTAUTO should reset to 0");
-
- for (unsigned int i = 0; i < get_field(abstractcs, DM_ABSTRACTCS_PROGBUFSIZE); i++) {
- COMPLIANCE_READ(target, &testvar_read, DM_PROGBUF0 + i);
- COMPLIANCE_TEST(testvar_read == 0, "PROGBUF words should reset to 0");
- }
-
- for (unsigned int i = 0; i < get_field(abstractcs, DM_ABSTRACTCS_DATACOUNT); i++) {
- COMPLIANCE_READ(target, &testvar_read, DM_DATA0 + i);
- COMPLIANCE_TEST(testvar_read == 0, "DATA words should reset to 0");
- }
-
- /*
- * TODO:
- * DCSR.cause priorities
- * DCSR.stoptime/stopcycle
- * DCSR.stepie
- * DCSR.ebreak
- * DCSR.prv
- */
-
- /* Halt every hart for any follow-up tests*/
- COMPLIANCE_MUST_PASS(riscv_halt(target));
-
- uint32_t failed_tests = total_tests - passed_tests;
- if (total_tests == passed_tests) {
- LOG_INFO("ALL TESTS PASSED\n");
- return ERROR_OK;
- } else {
- LOG_INFO("%d TESTS FAILED\n", failed_tests);
- return ERROR_FAIL;
- }
-}
projects / fw / openocd / blobdiff