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- .. SPDX-License-Identifier: GPL-2.0
- =================================================
- Firmware of PCIe controller for Renesas R-Car V4H
- =================================================
- Renesas R-Car V4H (r8a779g0) has a PCIe controller, requiring a specific
- firmware download during startup.
- However, Renesas currently cannot distribute the firmware free of charge.
- The firmware file "104_PCIe_fw_addr_data_ver1.05.txt" (note that the file name
- might be different between different datasheet revisions) can be found in the
- datasheet encoded as text, and as such, the file's content must be converted
- back to binary form. This can be achieved using the following example script:
- .. code-block:: sh
- $ awk '/^\s*0x[0-9A-Fa-f]{4}\s+0x[0-9A-Fa-f]{4}/ { print substr($2,5,2) substr($2,3,2) }' \
- 104_PCIe_fw_addr_data_ver1.05.txt | \
- xxd -p -r > rcar_gen4_pcie.bin
- Once the text content has been converted into a binary firmware file, verify
- its checksum as follows:
- .. code-block:: sh
- $ sha1sum rcar_gen4_pcie.bin
- 1d0bd4b189b4eb009f5d564b1f93a79112994945 rcar_gen4_pcie.bin
- The resulting binary file called "rcar_gen4_pcie.bin" should be placed in the
- "/lib/firmware" directory before the driver runs.
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