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jtag: retire tap field

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jtag_add_dr/ir_scan() now takes the tap as the first
argument, rather than for each of the fields passed
in.

The code never exercised the path where there was
more than one tap being scanned, who knows if it even
worked.

This simplifies the implementation and reduces clutter
in the calling code.

use jtag_add_ir/dr_plain_scan() for more fancy situations.

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
This commit is contained in:
Øyvind Harboe
2010-03-01 20:00:59 +01:00
parent f7d1be714b
commit e018c7c1d2
30 changed files with 155 additions and 359 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
src/target/etm.c
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@@ -508,14 +508,12 @@ static int etm_read_reg_w_check(struct reg *reg,
arm_jtag_scann(etm_reg->jtag_info, 0x6);
arm_jtag_set_instr(etm_reg->jtag_info, etm_reg->jtag_info->intest_instr, NULL);
fields[0].tap = etm_reg->jtag_info->tap;
fields[0].num_bits = 32;
fields[0].out_value = reg->value;
fields[0].in_value = NULL;
fields[0].check_value = NULL;
fields[0].check_mask = NULL;
fields[1].tap = etm_reg->jtag_info->tap;
fields[1].num_bits = 7;
fields[1].out_value = malloc(1);
buf_set_u32(fields[1].out_value, 0, 7, reg_addr);
@@ -523,7 +521,6 @@ static int etm_read_reg_w_check(struct reg *reg,
fields[1].check_value = NULL;
fields[1].check_mask = NULL;
fields[2].tap = etm_reg->jtag_info->tap;
fields[2].num_bits = 1;
fields[2].out_value = malloc(1);
buf_set_u32(fields[2].out_value, 0, 1, 0);
@@ -531,13 +528,13 @@ static int etm_read_reg_w_check(struct reg *reg,
fields[2].check_value = NULL;
fields[2].check_mask = NULL;
jtag_add_dr_scan(3, fields, jtag_get_end_state());
jtag_add_dr_scan(etm_reg->jtag_info->tap, 3, fields, jtag_get_end_state());
fields[0].in_value = reg->value;
fields[0].check_value = check_value;
fields[0].check_mask = check_mask;
jtag_add_dr_scan_check(3, fields, jtag_get_end_state());
jtag_add_dr_scan_check(etm_reg->jtag_info->tap, 3, fields, jtag_get_end_state());
free(fields[1].out_value);
free(fields[2].out_value);
@@ -594,28 +591,25 @@ static int etm_write_reg(struct reg *reg, uint32_t value)
arm_jtag_scann(etm_reg->jtag_info, 0x6);
arm_jtag_set_instr(etm_reg->jtag_info, etm_reg->jtag_info->intest_instr, NULL);
fields[0].tap = etm_reg->jtag_info->tap;
fields[0].num_bits = 32;
uint8_t tmp1[4];
fields[0].out_value = tmp1;
buf_set_u32(fields[0].out_value, 0, 32, value);
fields[0].in_value = NULL;
fields[1].tap = etm_reg->jtag_info->tap;
fields[1].num_bits = 7;
uint8_t tmp2;
fields[1].out_value = &tmp2;
buf_set_u32(fields[1].out_value, 0, 7, reg_addr);
fields[1].in_value = NULL;
fields[2].tap = etm_reg->jtag_info->tap;
fields[2].num_bits = 1;
uint8_t tmp3;
fields[2].out_value = &tmp3;
buf_set_u32(fields[2].out_value, 0, 1, 1);
fields[2].in_value = NULL;
jtag_add_dr_scan(3, fields, jtag_get_end_state());
jtag_add_dr_scan(etm_reg->jtag_info->tap, 3, fields, jtag_get_end_state());
return ERROR_OK;
}