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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
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17
src/target/arm926ejs.c
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@@ -70,28 +70,23 @@ static int arm926ejs_cp15_read(struct target *target, uint32_t op1, uint32_t op2
}
arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL);
fields[0].tap = jtag_info->tap;
fields[0].num_bits = 32;
fields[0].out_value = NULL;
fields[0].in_value = (uint8_t *)value;
fields[1].tap = jtag_info->tap;
fields[1].num_bits = 1;
fields[1].out_value = &access;
fields[1].in_value = &access;
fields[2].tap = jtag_info->tap;
fields[2].num_bits = 14;
fields[2].out_value = address_buf;
fields[2].in_value = NULL;
fields[3].tap = jtag_info->tap;
fields[3].num_bits = 1;
fields[3].out_value = &nr_w_buf;
fields[3].in_value = NULL;
jtag_add_dr_scan(4, fields, jtag_get_end_state());
jtag_add_dr_scan(jtag_info->tap, 4, fields, jtag_get_end_state());
long long then = timeval_ms();
@@ -100,7 +95,7 @@ static int arm926ejs_cp15_read(struct target *target, uint32_t op1, uint32_t op2
/* rescan with NOP, to wait for the access to complete */
access = 0;
nr_w_buf = 0;
jtag_add_dr_scan(4, fields, jtag_get_end_state());
jtag_add_dr_scan(jtag_info->tap, 4, fields, jtag_get_end_state());
jtag_add_callback(arm_le_to_h_u32, (jtag_callback_data_t)value);
@@ -164,27 +159,23 @@ static int arm926ejs_cp15_write(struct target *target, uint32_t op1, uint32_t op
}
arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL);
fields[0].tap = jtag_info->tap;
fields[0].num_bits = 32;
fields[0].out_value = value_buf;
fields[0].in_value = NULL;
fields[1].tap = jtag_info->tap;
fields[1].num_bits = 1;
fields[1].out_value = &access;
fields[1].in_value = &access;
fields[2].tap = jtag_info->tap;
fields[2].num_bits = 14;
fields[2].out_value = address_buf;
fields[2].in_value = NULL;
fields[3].tap = jtag_info->tap;
fields[3].num_bits = 1;
fields[3].out_value = &nr_w_buf;
fields[3].in_value = NULL;
jtag_add_dr_scan(4, fields, jtag_get_end_state());
jtag_add_dr_scan(jtag_info->tap, 4, fields, jtag_get_end_state());
long long then = timeval_ms();
@@ -193,7 +184,7 @@ static int arm926ejs_cp15_write(struct target *target, uint32_t op1, uint32_t op
/* rescan with NOP, to wait for the access to complete */
access = 0;
nr_w_buf = 0;
jtag_add_dr_scan(4, fields, jtag_get_end_state());
jtag_add_dr_scan(jtag_info->tap, 4, fields, jtag_get_end_state());
if ((retval = jtag_execute_queue()) != ERROR_OK)
{
return retval;