The "JTAG-GDB server" is a program for integrating the ARM-Embedded
ICE logic with the GNU-Debugger GDB.
This program is running at a host system (for example an i386 PC) and
it is directly (or an extra Level Shifter/Line Driver) connected with
the ARM Embedded ICE logic of the target platform using the JTAG
interface.
At the other side, the server has to understand GDB's own remote
debug protocol which is transported over ether a RS232 or a TCP/IP link
(including the loopback interface so that the debugger and the server
can live at the same machine).
The host system can be any embedded CPU platform that has a direct
port to emulate the standard JTAG signals.
For example the host platform can be standard PC with a parallel IO
using a Level Shifter/Line Driver.
These drivers can also be standard device like Altera Byteblaster,
Xilinx DLC, Lattice ISPDLC, Macraigor Wiggler etc or your own tinker
solution.
The target machine can be any ARM CPU with JTAG and embedded ICE
logic.
See Manual file for more details.
There is no stable release yet !!!!
An instable development snapshot of the JTAG-GDB Server with limited features exists.(see Notes)
| Host Architecture: | Standard ix86 PC |
| Operation System: | Unix (FreeBSD, Cygwin, Linux) |
| Host Interface: | TCP/IP |
| Target Machine: | ARM7TDMI , ARM9TDMI and Cortex-M3 (little endian versions) |
| Target Interface: | Parallel port driver |
Parallel Level Shifter/Line Driver:
| My own tinker solution | seems to work | |
| Olimex MSP 430 JTAG | seems to work | additional modifications required (due to voltage regulator feedback and rest signal driver) |
| Altera Byteblaster | not yet tested | |
| Xilinx DLC | not yet tested | |
| Lattice ISPDLC | seems to work | |
| Macraigor Wiggler | seems to work |
ARM7TDMI target machines:
| Type | Vendor | Core | Featurs | Comment |
| S3C44B0X | Samsung | most functions seems to work (*) | ||
| AT91SAM7S64 | Atmel | most functions seems to work (*) | ||
| LPC2106 | Phillips | most functions seems to work (*) | ||
| STR711 | STM | most functions seems to work (*) | ||
| ML67Q5003 | OKI | not yet tested | ||
| LH79520 | Sharp | ARM720T | MMU | some functions seems to work, poor MMU support (**) |
ARM9TDMI target machines:
| Type | Vendor | Core | Featurs | Comment |
| AT91RM9200 | Atmel | ARM920T | MMU | some functions seems to work, poor MMU support (**) |
| STR912 | STM | ARM966E-S | TCM (noMMU) | some functions seems to work, poor CP15 support (***) |
Cortex-M3 target machines:
| Type | Vendor | Core | Featurs | Comment |
| STM32F10x | STM | ARMv7-M | Thumb 2 (no ARM-mode) | some functions seems to work (****) |
Flash of target platform:
| AMD Algorithm | M29W400BB (STM) | seems to work |
| Intel Algorithm | not yet tested |