| .. 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. |
