François
831bd7c129
The SVF player now lives in electronics/libsvf behind a five-function JTAG ops table, shared with the wifi_jtag_programmer Zephyr firmware. src/modules/svf/ shrinks to the bscan_*-backed port (bs_svf_play), which also keeps the FTDI stale-FIFO warm-up. Local checkout override: -DFETCHCONTENT_SOURCE_DIR_SVF=<path>.
59 lines
1.6 KiB
C
59 lines
1.6 KiB
C
/*
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* bs_explorer glue for libsvf: maps the svf_jtag_ops port onto the
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* bscan_* TAP primitives.
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* SPDX-License-Identifier: LGPL-2.1-or-later
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*/
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#include <unistd.h>
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#include "svf_glue.h"
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#include "bscan/bscan.h"
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static int ops_tap_reset(void *ctx)
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{
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return bscan_tap_reset((jtag_core *)ctx);
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}
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static int ops_shift_ir(void *ctx, const uint8_t *tdi, uint8_t *tdo, int nbits)
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{
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return bscan_shift_ir((jtag_core *)ctx, tdi, tdo, nbits);
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}
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static int ops_shift_dr(void *ctx, const uint8_t *tdi, uint8_t *tdo, int nbits)
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{
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return bscan_shift_dr((jtag_core *)ctx, tdi, tdo, nbits);
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}
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static int ops_idle_cycles(void *ctx, int ncycles)
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{
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return bscan_idle_cycles((jtag_core *)ctx, ncycles);
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}
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static void ops_delay_us(void *ctx, unsigned long us)
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{
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(void)ctx;
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usleep((useconds_t)us);
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}
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static const svf_jtag_ops bscan_svf_ops = {
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.tap_reset = ops_tap_reset,
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.shift_ir = ops_shift_ir,
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.shift_dr = ops_shift_dr,
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.idle_cycles = ops_idle_cycles,
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.delay_us = ops_delay_us,
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};
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int bs_svf_play(jtag_core *jc, const char *path,
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svf_log_fn log, void *user, svf_stats *stats)
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{
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/* Warm up the link before the first real scan: the FTDI MPSSE's first
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* data read after a fresh open returns stale FIFO content. The normal
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* Viveris flow hides this (jtag_scan/autoinit runs first); do a
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* throwaway reset + DR read so a standalone svf_play is reliable. */
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uint8_t junk[4];
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bscan_tap_reset(jc);
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bscan_shift_dr(jc, NULL, junk, 32);
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return svf_play_file(&bscan_svf_ops, jc, path, log, user, stats);
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}
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