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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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12
src/target/arm966e.c
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@@ -91,7 +91,6 @@ static int arm966e_read_cp15(struct target *target, int reg_addr, uint32_t *valu
}
arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL);
fields[0].tap = jtag_info->tap;
fields[0].num_bits = 32;
/* REVISIT: table 7-2 shows that bits 31-31 need to be
* specified for accessing BIST registers ...
@@ -99,21 +98,19 @@ static int arm966e_read_cp15(struct target *target, int reg_addr, uint32_t *valu
fields[0].out_value = NULL;
fields[0].in_value = NULL;
fields[1].tap = jtag_info->tap;
fields[1].num_bits = 6;
fields[1].out_value = &reg_addr_buf;
fields[1].in_value = NULL;
fields[2].tap = jtag_info->tap;
fields[2].num_bits = 1;
fields[2].out_value = &nr_w_buf;
fields[2].in_value = NULL;
jtag_add_dr_scan(3, fields, jtag_get_end_state());
jtag_add_dr_scan(jtag_info->tap, 3, fields, jtag_get_end_state());
fields[1].in_value = (uint8_t *)value;
jtag_add_dr_scan(3, fields, jtag_get_end_state());
jtag_add_dr_scan(jtag_info->tap, 3, fields, jtag_get_end_state());
jtag_add_callback(arm_le_to_h_u32, (jtag_callback_data_t)value);
@@ -149,22 +146,19 @@ int arm966e_write_cp15(struct target *target, int reg_addr, uint32_t value)
}
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 = 6;
fields[1].out_value = &reg_addr_buf;
fields[1].in_value = NULL;
fields[2].tap = jtag_info->tap;
fields[2].num_bits = 1;
fields[2].out_value = &nr_w_buf;
fields[2].in_value = NULL;
jtag_add_dr_scan(3, fields, jtag_get_end_state());
jtag_add_dr_scan(jtag_info->tap, 3, fields, jtag_get_end_state());
#ifdef _DEBUG_INSTRUCTION_EXECUTION_
LOG_DEBUG("addr: 0x%x value: %8.8x", reg_addr, value);