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microwatt/openocd
Benjamin Herrenschmidt d3c274d01e flash-arty: Add support for specifying the file type
By default openocd tries to "guess" the file type and interpret
it accordingly. For example it will detect an ELF file based on
the presence of an ELF header and will try to load the relevant
segments into the flash.

This may not be what we want. For example, I want to load the raw
ELF file into the flash.

Additionally the ELF parser in most distro's OpenOCD version
only supports ELF32 and will error out.

This adds a "-t" argument to flash-arty to allow us to specify the
file format. For example "-t bin" will treat the file as raw binary.

Unfortunately I had to copy and modify jtagspi.cfg from OpenOCD
to achieve this.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
4 years ago
..
LFE5U-25F.cfg Initial support for ghdl synthesis 5 years ago
LFE5U-45F.cfg Initial support for ghdl synthesis 5 years ago
LFE5U-85F.cfg Initial support for ghdl synthesis 5 years ago
LFE5UM-25F.cfg Initial support for ghdl synthesis 5 years ago
LFE5UM-45F.cfg Initial support for ghdl synthesis 5 years ago
LFE5UM-85F.cfg Initial support for ghdl synthesis 5 years ago
LFE5UM5G-25F.cfg Initial support for ghdl synthesis 5 years ago
LFE5UM5G-45F.cfg Initial support for ghdl synthesis 5 years ago
LFE5UM5G-85F.cfg Initial support for ghdl synthesis 5 years ago
README Add openocd SPI flashing proxies for Arty 5 years ago
bscan_spi_xc7a35t.bit Add openocd SPI flashing proxies for Arty 5 years ago
bscan_spi_xc7a100t.bit Add openocd SPI flashing proxies for Arty 5 years ago
ecp5-evn.cfg Initial support for ghdl synthesis 5 years ago
flash-arty flash-arty: Add support for specifying the file type 4 years ago
jtagspi.cfg flash-arty: Add support for specifying the file type 4 years ago
olimex-arm-usb-tiny-h.cfg Initial support for ghdl synthesis 5 years ago
xilinx-xc7.cfg flash-arty: Add support for specifying the file type 4 years ago

README

The Xilinx SPI flashing proxies come from here:

https://github.com/quartiq/bscan_spi_bitstreams/blob/single-tap/bscan_spi_xc7a35t.bit?raw=true
https://github.com/quartiq/bscan_spi_bitstreams/blob/single-tap/bscan_spi_xc7a100t.bit?raw=true

These are the "old" single tap versions that are supported by the openocd
release packaged in distros (0.10). If you use the wrong versions you see this:

$ ./openocd/flash-arty microwatt_0.bit
Open On-Chip Debugger 0.10.0
Licensed under GNU GPL v2
For bug reports, read
	http://openocd.org/doc/doxygen/bugs.html
none separate
Info : auto-selecting first available session transport "jtag". To override use 'transport select <transport>'.
adapter speed: 25000 kHz
fpga_program
Info : ftdi: if you experience problems at higher adapter clocks, try the command "ftdi_tdo_sample_edge falling"
Info : clock speed 25000 kHz
Info : JTAG tap: xc7.tap tap/device found: 0x0362d093 (mfg: 0x049 (Xilinx), part: 0x362d, ver: 0x0)
loaded file openocd/bscan_spi_xc7a35t.bit to pld device 0 in 0s 152803us
Info : JTAG tap: xc7.tap tap/device found: 0x0362d093 (mfg: 0x049 (Xilinx), part: 0x362d, ver: 0x0)
Error: Unknown flash device (ID 0x00ffffff)

If you find yourself with a later openocd version that contians 867bdb2e9248
("jtagspi: new protocol that includes transfer length") you should fetch the
bitstream from the master branch:

https://github.com/quartiq/bscan_spi_bitstreams/blob/master/bscan_spi_xc7a35t.bit?raw=true
https://github.com/quartiq/bscan_spi_bitstreams/blob/master/bscan_spi_xc7a100t.bit?raw=true