translate README to English
Match the existing project convention (Viveris code, commit messages). Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
This commit is contained in:
142
README.md
142
README.md
@@ -1,33 +1,33 @@
|
||||
# bs_explorer — Boundary Scan Explorer
|
||||
|
||||
Outil en ligne de commande pour explorer une chaîne JTAG, contrôler les
|
||||
broches d'un FPGA via le boundary scan (BSDL), et — à terme — programmer
|
||||
les mémoires SPI connectées au FPGA (Xilinx et autres) en bit-bangeant
|
||||
SPI sur les pins d'I/O placés en EXTEST.
|
||||
Command-line tool to explore a JTAG chain, drive an FPGA's pins through
|
||||
boundary scan (BSDL), and — eventually — program SPI memories attached
|
||||
to the FPGA (Xilinx and others) by bit-banging SPI on I/O pins placed
|
||||
in EXTEST.
|
||||
|
||||
Basé sur la librairie [jtag-boundary-scanner](https://github.com/viveris/jtag-boundary-scanner)
|
||||
de Viveris (LGPL).
|
||||
Based on the [jtag-boundary-scanner](https://github.com/viveris/jtag-boundary-scanner)
|
||||
library by Viveris (LGPL).
|
||||
|
||||
## État
|
||||
## Status
|
||||
|
||||
- Détection de la chaîne JTAG via sondes FTDI / J-Link / Linux GPIO : OK
|
||||
- Chargement automatique d'un BSDL par IDCODE : OK
|
||||
- Pilotage de pins en SAMPLE / EXTEST : OK
|
||||
- SPI bit-bang sur 4 pins du FPGA (MOSI/MISO/CS/CLK) : OK (primitive bas niveau)
|
||||
- Programmation de flash SPI (détection JEDEC, erase, page program, verify) : **à venir**
|
||||
- Abstraction multi-FPGA (mapping pins → flash par cible) : **à venir**
|
||||
- JTAG chain detection through FTDI / J-Link / Linux GPIO probes: OK
|
||||
- Automatic BSDL loading by IDCODE: OK
|
||||
- Pin control in SAMPLE / EXTEST: OK
|
||||
- SPI bit-bang on 4 FPGA pins (MOSI/MISO/CS/CLK): OK (low-level primitive)
|
||||
- SPI flash programming (JEDEC detect, erase, page program, verify): **planned**
|
||||
- Multi-FPGA abstraction (per-target pin → flash mapping): **planned**
|
||||
|
||||
Seul BSDL embarqué pour l'instant : Xilinx Kintex UltraScale+ KU15P
|
||||
(`bsdl_files/xcku15p_ffve1517.bsd`). En ajouter d'autres se fait en
|
||||
déposant le `.bsd` dans `bsdl_files/`.
|
||||
Only one BSDL is bundled so far: Xilinx Kintex UltraScale+ KU15P
|
||||
(`bsdl_files/xcku15p_ffve1517.bsd`). Add more by dropping `.bsd` files
|
||||
in `bsdl_files/`.
|
||||
|
||||
## Dépendances
|
||||
## Dependencies
|
||||
|
||||
- CMake ≥ 3.10, gcc/clang
|
||||
- `readline` (Arch : `readline`, Debian/Ubuntu : `libreadline-dev`)
|
||||
- `libftd2xx` pour les sondes FTDI (vendoré dans `libs/libftd2xx/`)
|
||||
- `readline` (Arch: `readline`, Debian/Ubuntu: `libreadline-dev`)
|
||||
- `libftd2xx` for FTDI probes (vendored in `libs/libftd2xx/`)
|
||||
|
||||
## Compilation
|
||||
## Build
|
||||
|
||||
```sh
|
||||
mkdir build && cd build
|
||||
@@ -35,101 +35,101 @@ cmake ..
|
||||
make
|
||||
```
|
||||
|
||||
Le binaire est produit dans `build/bs/bs`.
|
||||
The binary is produced at `build/bs/bs`.
|
||||
|
||||
## Lancement
|
||||
## Run
|
||||
|
||||
```sh
|
||||
cd build
|
||||
./bs/bs
|
||||
```
|
||||
|
||||
Au démarrage, `bs_explorer` cherche un fichier `config.script` dans le
|
||||
répertoire courant pour surcharger les variables par défaut (clock FTDI,
|
||||
mapping des broches TRST/SRST, etc.). Voir `modules/config/config.script`
|
||||
pour la liste des variables disponibles.
|
||||
At startup, `bs_explorer` looks for a `config.script` file in the
|
||||
current directory to override default settings (FTDI clock, TRST/SRST
|
||||
pin mapping, etc.). See `modules/config/config.script` for the full
|
||||
list of variables.
|
||||
|
||||
## REPL
|
||||
|
||||
- `<Tab>` complète les noms de commande.
|
||||
- Historique géré par GNU readline (flèches haut/bas, Ctrl-R…).
|
||||
- `help` ou `?` liste les commandes ; `help <cmd>` détaille une commande.
|
||||
- `exit`, `quit` ou Ctrl-D pour quitter.
|
||||
- `<Tab>` completes command names.
|
||||
- History handled by GNU readline (up/down arrows, Ctrl-R, …).
|
||||
- `help` or `?` lists commands; `help <cmd>` shows details.
|
||||
- `exit`, `quit`, or Ctrl-D to leave.
|
||||
|
||||
## Flow typique
|
||||
## Typical flow
|
||||
|
||||
```sh
|
||||
# 1. Ouvrir une sonde (1 = première sonde détectée)
|
||||
# 1. Open a probe (1 = first detected probe)
|
||||
bs_explorer> jtag_get_probes_list
|
||||
bs_explorer> jtag_open_probe 1
|
||||
|
||||
# 2. Scanner la chaîne et charger les BSDL automatiquement
|
||||
# 2. Scan the chain and auto-load BSDL files
|
||||
bs_explorer> jtag_autoinit
|
||||
|
||||
# 3. Passer le device 0 en EXTEST (contrôle direct des broches)
|
||||
# 3. Switch device 0 to EXTEST (direct pin control)
|
||||
bs_explorer> jtag_set_mode 0 EXTEST
|
||||
|
||||
# 4. Configurer les 4 pins SPI sur les broches BSDL du FPGA
|
||||
# (les noms exacts dépendent du BSDL chargé)
|
||||
# 4. Wire the 4 SPI pins onto the FPGA's BSDL pins
|
||||
# (exact names depend on the loaded BSDL)
|
||||
bs_explorer> jtag_set_spi_cs_pin 0 <PIN_CS> 0
|
||||
bs_explorer> jtag_set_spi_clk_pin 0 <PIN_CLK> 0
|
||||
bs_explorer> jtag_set_spi_mosi_pin 0 <PIN_MOSI> 0
|
||||
bs_explorer> jtag_set_spi_miso_pin 0 <PIN_MISO> 0
|
||||
|
||||
# 5. Lire le JEDEC ID de la flash (0x9F + 3 dummies)
|
||||
# 5. Read the flash JEDEC ID (0x9F + 3 dummies)
|
||||
bs_explorer> jtag_spi_rd_wr 9F000000
|
||||
```
|
||||
|
||||
Un fichier d'exemple minimal est fourni dans `scripts/example_script.txt`.
|
||||
A minimal example script is provided in `scripts/example_script.txt`.
|
||||
|
||||
## Commandes principales
|
||||
## Main commands
|
||||
|
||||
| Catégorie | Commandes |
|
||||
|---------------|-----------|
|
||||
| Contrôle script | `set`, `print`, `print_env_var`, `if`, `goto`, `call`, `return`, `rand`, `init_array`, `system`, `pause` |
|
||||
| Sonde / chaîne | `jtag_get_probes_list`, `jtag_open_probe`, `jtag_init_scan`, `jtag_autoinit`, `jtag_get_nb_of_devices`, `jtag_get_devices_list` |
|
||||
| BSDL / pins | `jtag_load_bsdl`, `jtag_get_pins_list`, `jtag_set_mode`, `jtag_set_pin_dir`, `jtag_set_pin_state`, `jtag_get_pin_state`, `jtag_push_pop` |
|
||||
| I²C / MDIO / SPI sur pins BS | `jtag_set_i2c_*_pin`, `jtag_i2c_rd`, `jtag_i2c_wr`, `jtag_set_mdio_*_pin`, `jtag_mdio_rd`, `jtag_mdio_wr`, `jtag_set_spi_*_pin`, `jtag_spi_rd_wr` |
|
||||
| Category | Commands |
|
||||
|----------|----------|
|
||||
| Script control | `set`, `print`, `print_env_var`, `if`, `goto`, `call`, `return`, `rand`, `init_array`, `system`, `pause` |
|
||||
| Probe / chain | `jtag_get_probes_list`, `jtag_open_probe`, `jtag_init_scan`, `jtag_autoinit`, `jtag_get_nb_of_devices`, `jtag_get_devices_list` |
|
||||
| BSDL / pins | `jtag_load_bsdl`, `jtag_get_pins_list`, `jtag_set_mode`, `jtag_set_pin_dir`, `jtag_set_pin_state`, `jtag_get_pin_state`, `jtag_push_pop` |
|
||||
| I²C / MDIO / SPI over BS pins | `jtag_set_i2c_*_pin`, `jtag_i2c_rd`, `jtag_i2c_wr`, `jtag_set_mdio_*_pin`, `jtag_mdio_rd`, `jtag_mdio_wr`, `jtag_set_spi_*_pin`, `jtag_spi_rd_wr` |
|
||||
| Misc | `help`, `?`, `version`, `exit` |
|
||||
|
||||
Utiliser `help <commande>` pour l'aide détaillée.
|
||||
Use `help <command>` for per-command help.
|
||||
|
||||
## Sondes supportées
|
||||
## Supported probes
|
||||
|
||||
- **FTDI** MPSSE (FT2232D/H, FT4232H…) — voir le bloc `PROBE_FTDI_*` dans
|
||||
`modules/config/config.script` pour le mapping des broches et la fréquence TCK.
|
||||
- **FTDI** MPSSE (FT2232D/H, FT4232H, …) — see the `PROBE_FTDI_*` block
|
||||
in `modules/config/config.script` for pin mapping and TCK frequency.
|
||||
- **SEGGER J-Link**
|
||||
- **Linux GPIO** (sysfs ; déprécié sur kernels récents, à migrer vers libgpiod)
|
||||
- **Linux GPIO** (sysfs; deprecated on recent kernels, libgpiod migration TBD)
|
||||
|
||||
## Limitations connues sur Xilinx
|
||||
## Known Xilinx caveats
|
||||
|
||||
Sur 7-Series / UltraScale / UltraScale+, `CCLK` n'est pas une broche
|
||||
d'I/O classique et passe par la primitive `STARTUPE3`. Elle n'est donc
|
||||
pas directement pilotable en EXTEST. Workarounds connus :
|
||||
- utiliser l'instruction privée `ISC_DISABLE` ;
|
||||
- câbler l'horloge SPI sur un autre pin utilisateur du FPGA.
|
||||
On 7-Series / UltraScale / UltraScale+, `CCLK` is not a regular I/O pin
|
||||
and goes through the `STARTUPE3` primitive, so it cannot be driven
|
||||
directly in EXTEST. Known workarounds:
|
||||
- use the private `ISC_DISABLE` instruction;
|
||||
- route the SPI clock through another user pin of the FPGA.
|
||||
|
||||
À traiter lors de l'ajout de la couche d'abstraction FPGA.
|
||||
To be handled when the FPGA abstraction layer is added.
|
||||
|
||||
## Structure du dépôt
|
||||
## Repository layout
|
||||
|
||||
```
|
||||
bs/ Application (REPL readline)
|
||||
bs/ Application (readline REPL)
|
||||
modules/
|
||||
├── jtag_core/ TAP state machine, IR/DR shifts
|
||||
├── bsdl_parser/ Chargement de .bsd
|
||||
├── bus_over_jtag/ SPI / I²C / MDIO / mem parallèle bit-bangés
|
||||
├── bsdl_parser/ .bsd loader
|
||||
├── bus_over_jtag/ SPI / I²C / MDIO / parallel mem bit-bang
|
||||
├── drivers/ FTDI, J-Link, Linux GPIO, LPT
|
||||
├── script/ Moteur de scripts (40+ commandes)
|
||||
├── config/ config.script intégré
|
||||
├── os_interface/ Wrappers fs/network portables
|
||||
└── natsort/ Tri naturel des noms de pin
|
||||
bsdl_files/ Fichiers BSDL des FPGAs cibles
|
||||
scripts/ Exemples de scripts
|
||||
libs/libftd2xx/ SDK FTDI vendoré
|
||||
├── script/ Script engine (40+ commands)
|
||||
├── config/ Built-in config.script
|
||||
├── os_interface/ Portable fs/network wrappers
|
||||
└── natsort/ Natural-order pin-name sorting
|
||||
bsdl_files/ BSDL files for target FPGAs
|
||||
scripts/ Example scripts
|
||||
libs/libftd2xx/ Vendored FTDI SDK
|
||||
```
|
||||
|
||||
## Licence
|
||||
## License
|
||||
|
||||
`modules/jtag_core/` et les fichiers d'origine Viveris sont sous LGPL 2.1.
|
||||
Voir `LICENSE` et `modules/jtag_core/COPYING.LESSER`.
|
||||
`modules/jtag_core/` and the original Viveris files are under LGPL 2.1.
|
||||
See `LICENSE` and `modules/jtag_core/COPYING.LESSER`.
|
||||
|
||||
Reference in New Issue
Block a user