/*#define DEBUG_WAIT*/
/* JTAG instructions/registers for JTAG-DP and SWJ-DP */
-#define JTAG_DP_ABORT 0x8
-#define JTAG_DP_DPACC 0xA
-#define JTAG_DP_APACC 0xB
-#define JTAG_DP_IDCODE 0xE
+#define JTAG_DP_ABORT 0xF8
+#define JTAG_DP_DPACC 0xFA
+#define JTAG_DP_APACC 0xFB
+#define JTAG_DP_IDCODE 0xFE
/* three-bit ACK values for DPACC and APACC reads */
#define JTAG_ACK_OK_FAULT 0x2
struct list_head lh;
uint8_t instr;
uint8_t reg_addr;
- uint8_t RnW;
+ uint8_t rnw;
uint8_t *invalue;
uint8_t ack;
uint32_t memaccess_tck;
LOG_DEBUG("%s: %2s %6s %5s 0x%08x 0x%08x %2s", header,
el->instr == JTAG_DP_APACC ? "AP" : "DP",
dap_reg_name(el->instr, el->reg_addr),
- el->RnW == DPAP_READ ? "READ" : "WRITE",
+ el->rnw == DPAP_READ ? "READ" : "WRITE",
buf_get_u32(el->outvalue_buf, 0, 32),
buf_get_u32(el->invalue, 0, 32),
el->ack == JTAG_ACK_OK_FAULT ? "OK" :
}
static struct dap_cmd *dap_cmd_new(struct adiv5_dap *dap, uint8_t instr,
- uint8_t reg_addr, uint8_t RnW,
+ uint8_t reg_addr, uint8_t rnw,
uint8_t *outvalue, uint8_t *invalue,
uint32_t memaccess_tck)
{
if (list_empty(&dap->cmd_pool)) {
pool = calloc(1, sizeof(struct dap_cmd_pool));
- if (pool == NULL)
+ if (!pool)
return NULL;
} else {
pool = list_first_entry(&dap->cmd_pool, struct dap_cmd_pool, lh);
INIT_LIST_HEAD(&cmd->lh);
cmd->instr = instr;
cmd->reg_addr = reg_addr;
- cmd->RnW = RnW;
- if (outvalue != NULL)
+ cmd->rnw = rnw;
+ if (outvalue)
memcpy(cmd->outvalue_buf, outvalue, 4);
- cmd->invalue = (invalue != NULL) ? invalue : cmd->invalue_buf;
+ cmd->invalue = (invalue) ? invalue : cmd->invalue_buf;
cmd->memaccess_tck = memaccess_tck;
return cmd;
* For APACC access with any sticky error flag set, this is discarded.
*/
cmd->fields[0].num_bits = 3;
- buf_set_u32(&cmd->out_addr_buf, 0, 3, ((cmd->reg_addr >> 1) & 0x6) | (cmd->RnW & 0x1));
+ buf_set_u32(&cmd->out_addr_buf, 0, 3, ((cmd->reg_addr >> 1) & 0x6) | (cmd->rnw & 0x1));
cmd->fields[0].out_value = &cmd->out_addr_buf;
- cmd->fields[0].in_value = (ack != NULL) ? ack : &cmd->ack;
+ cmd->fields[0].in_value = (ack) ? ack : &cmd->ack;
/* NOTE: if we receive JTAG_ACK_WAIT, the previous operation did not
* complete; data we write is discarded, data we read is unpredictable.
* conversions are performed. See section 4.4.3 of the ADIv5 spec, which
* discusses operations which access these registers.
*
- * Note that only one scan is performed. If RnW is set, a separate scan
+ * Note that only one scan is performed. If rnw is set, a separate scan
* will be needed to collect the data which was read; the "invalue" collects
* the posted result of a preceding operation, not the current one.
*
* @param instr JTAG_DP_APACC (AP access) or JTAG_DP_DPACC (DP access)
* @param reg_addr two significant bits; A[3:2]; for APACC access, the
* SELECT register has more addressing bits.
- * @param RnW false iff outvalue will be written to the DP or AP
+ * @param rnw false iff outvalue will be written to the DP or AP
* @param outvalue points to a 32-bit (little-endian) integer
* @param invalue NULL, or points to a 32-bit (little-endian) integer
* @param ack points to where the three bit JTAG_ACK_* code will be stored
*/
static int adi_jtag_dp_scan(struct adiv5_dap *dap,
- uint8_t instr, uint8_t reg_addr, uint8_t RnW,
+ uint8_t instr, uint8_t reg_addr, uint8_t rnw,
uint8_t *outvalue, uint8_t *invalue,
uint32_t memaccess_tck, uint8_t *ack)
{
struct dap_cmd *cmd;
int retval;
- cmd = dap_cmd_new(dap, instr, reg_addr, RnW, outvalue, invalue, memaccess_tck);
- if (cmd != NULL)
+ cmd = dap_cmd_new(dap, instr, reg_addr, rnw, outvalue, invalue, memaccess_tck);
+ if (cmd)
cmd->dp_select = dap->select;
else
return ERROR_JTAG_DEVICE_ERROR;
* must be different).
*/
static int adi_jtag_dp_scan_u32(struct adiv5_dap *dap,
- uint8_t instr, uint8_t reg_addr, uint8_t RnW,
+ uint8_t instr, uint8_t reg_addr, uint8_t rnw,
uint32_t outvalue, uint32_t *invalue,
uint32_t memaccess_tck, uint8_t *ack)
{
buf_set_u32(out_value_buf, 0, 32, outvalue);
- retval = adi_jtag_dp_scan(dap, instr, reg_addr, RnW,
+ retval = adi_jtag_dp_scan(dap, instr, reg_addr, rnw,
out_value_buf, (uint8_t *)invalue, memaccess_tck, ack);
if (retval != ERROR_OK)
return retval;
{
int retval = ERROR_OK;
- if (dap->last_read != NULL) {
+ if (dap->last_read) {
retval = adi_jtag_dp_scan_u32(dap, JTAG_DP_DPACC,
DP_RDBUFF, DPAP_READ, 0, dap->last_read, 0, NULL);
dap->last_read = NULL;
}
static int adi_jtag_scan_inout_check_u32(struct adiv5_dap *dap,
- uint8_t instr, uint8_t reg_addr, uint8_t RnW,
+ uint8_t instr, uint8_t reg_addr, uint8_t rnw,
uint32_t outvalue, uint32_t *invalue, uint32_t memaccess_tck)
{
int retval;
/* Issue the read or write */
retval = adi_jtag_dp_scan_u32(dap, instr, reg_addr,
- RnW, outvalue, NULL, memaccess_tck, NULL);
+ rnw, outvalue, NULL, memaccess_tck, NULL);
if (retval != ERROR_OK)
return retval;
/* For reads, collect posted value; RDBUFF has no other effect.
* Assumes read gets acked with OK/FAULT, and CTRL_STAT says "OK".
*/
- if ((RnW == DPAP_READ) && (invalue != NULL)) {
+ if ((rnw == DPAP_READ) && (invalue)) {
retval = adi_jtag_dp_scan_u32(dap, JTAG_DP_DPACC,
DP_RDBUFF, DPAP_READ, 0, invalue, 0, NULL);
if (retval != ERROR_OK)
*/
if (found_wait && el != list_first_entry(&dap->cmd_journal, struct dap_cmd, lh)) {
prev = list_entry(el->lh.prev, struct dap_cmd, lh);
- if (prev->RnW == DPAP_READ) {
+ if (prev->rnw == DPAP_READ) {
log_dap_cmd("PND", prev);
/* search for the next OK transaction, it contains
* the result of the previous READ */
}
}
- if (prev != NULL) {
+ if (prev) {
log_dap_cmd("LST", el);
/*
*/
tmp = dap_cmd_new(dap, JTAG_DP_DPACC,
DP_RDBUFF, DPAP_READ, NULL, NULL, 0);
- if (tmp == NULL) {
+ if (!tmp) {
retval = ERROR_JTAG_DEVICE_ERROR;
goto done;
}
el = list_first_entry(&replay_list, struct dap_cmd, lh);
tmp = dap_cmd_new(dap, JTAG_DP_DPACC,
DP_SELECT, DPAP_WRITE, (uint8_t *)&el->dp_select, NULL, 0);
- if (tmp == NULL) {
+ if (!tmp) {
retval = ERROR_JTAG_DEVICE_ERROR;
goto done;
}
projects / fw / openocd / blobdiff