diff options
Diffstat (limited to 'src/jtag/jtag.h')
| -rw-r--r-- | src/jtag/jtag.h | 33 |
1 files changed, 14 insertions, 19 deletions
diff --git a/src/jtag/jtag.h b/src/jtag/jtag.h index 5e1733e9..d58be2f7 100644 --- a/src/jtag/jtag.h +++ b/src/jtag/jtag.h @@ -33,20 +33,15 @@ #define _DEBUG_JTAG_IO_ #endif -/* Tap States - * TLR - Test-Logic-Reset, RTI - Run-Test/Idle, - * SDS - Select-DR-Scan, CD - Capture-DR, SD - Shift-DR, E1D - Exit1-DR, - * PD - Pause-DR, E2D - Exit2-DR, UD - Update-DR, - * SIS - Select-IR-Scan, CI - Capture-IR, SI - Shift-IR, E1I - Exit1-IR, - * PI - Pause-IR, E2I - Exit2-IR, UI - Update-IR +/* 16 Tap States, from page 21 of ASSET InterTech, Inc.'s svf.pdf */ enum tap_state { - TAP_TLR = 0x0, TAP_RTI = 0x8, - TAP_SDS = 0x1, TAP_CD = 0x2, TAP_SD = 0x3, TAP_E1D = 0x4, - TAP_PD = 0x5, TAP_E2D = 0x6, TAP_UD = 0x7, - TAP_SIS = 0x9, TAP_CI = 0xa, TAP_SI = 0xb, TAP_E1I = 0xc, - TAP_PI = 0xd, TAP_E2I = 0xe, TAP_UI = 0xf + TAP_RESET = 0x0, TAP_IDLE = 0x8, + TAP_DRSELECT = 0x1, TAP_DRCAPTURE = 0x2, TAP_DRSHIFT = 0x3, TAP_DREXIT1 = 0x4, + TAP_DRPAUSE = 0x5, TAP_DREXIT2 = 0x6, TAP_DRUPDATE = 0x7, + TAP_IRSELECT = 0x9, TAP_IRCAPTURE = 0xa, TAP_IRSHIFT = 0xb, TAP_IREXIT1 = 0xc, + TAP_IRPAUSE = 0xd, TAP_IREXIT2 = 0xe, TAP_IRUPDATE = 0xf }; typedef struct tap_transition_s @@ -325,7 +320,7 @@ extern int jtag_register_commands(struct command_context_s *cmd_ctx); /* JTAG interface, can be implemented with a software or hardware fifo * - * TAP_SD and TAP_SI are illegal end states. TAP_SD/SI as end states + * TAP_DRSHIFT and TAP_IRSHIFT are illegal end states. TAP_DRSHIFT/SI as end states * can be emulated by using a larger scan. * * Code that is relatively insensitive to the path(as long @@ -343,7 +338,7 @@ extern void jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum ta extern int interface_jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state endstate); extern void jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state endstate); extern int interface_jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state endstate); -/* run a TAP_TLR reset. End state is TAP_TLR, regardless +/* run a TAP_RESET reset. End state is TAP_RESET, regardless * of start state. */ extern void jtag_add_tlr(void); @@ -364,7 +359,7 @@ extern int interface_jtag_add_tlr(void); * all drivers can support this, but it is required for e.g. * XScale and Xilinx support * - * Note! TAP_TLR must not be used in the path! + * Note! TAP_RESET must not be used in the path! * * Note that the first on the list must be reachable * via a single transition from the current state. @@ -380,12 +375,12 @@ extern int interface_jtag_add_tlr(void); */ extern void jtag_add_pathmove(int num_states, enum tap_state *path); extern int interface_jtag_add_pathmove(int num_states, enum tap_state *path); -/* go to TAP_RTI, if we're not already there and cycle - * precisely num_cycles in the TAP_RTI after which move - * to the end state, if it is != TAP_RTI +/* go to TAP_IDLE, if we're not already there and cycle + * precisely num_cycles in the TAP_IDLE after which move + * to the end state, if it is != TAP_IDLE * * nb! num_cycles can be 0, in which case the fn will navigate - * to endstate via TAP_RTI + * to endstate via TAP_IDLE */ extern void jtag_add_runtest(int num_cycles, enum tap_state endstate); extern int interface_jtag_add_runtest(int num_cycles, enum tap_state endstate); @@ -488,7 +483,7 @@ extern int jtag_verify_capture_ir; #define MINIDRIVER(a) a /* jtag_add_dr_out() is a faster version of jtag_add_dr_scan() * - * Current or end_state can not be TAP_TLR. end_state can be -1 + * Current or end_state can not be TAP_RESET. end_state can be -1 * * num_bits[i] is the number of bits to clock out from value[i] LSB first. * |