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| − | | + | #REDIRECT [[Debricking the BMC]] |
| − | = Serial port recovery of U-Boot: =
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| − | ''This method was discovered by Centurion Dan as an alternative to pulling and reflashing the BMC SPI chip after a failed update had corrupted/wiped U-Boot''
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| − | Tools required:
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| − | [[Talos_II/Building_FAQ#BMC_serial_port_J7701|BMC serial port]]
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| − | Another computer with a serial port (usb to serial works fine) preferably running linux.
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| − | Software:
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| − | SOC Flash Utility from [https://www.aspeedtech.com/support.php Aspeed Technology's Support Page]: at least version [http://upload.aspeedtech.com/SOC/v11800.zip 1.18.00]
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| − | BMC Firmware bundle: | |
| − | [[Talos_II/Firmware Firmware]] BMC [[:File:Talos_ii_openbmc_v1.07_bundle.tar.bz2| System Package 1.06 2a92dec044239591244b6ed69c3fac162a6b9ea4]]
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| − | Procedure:
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| − | :1) Unzip the SOC FLASH Utility on your other computer, and unzip the appropriate SOC Flash Utility bundle for that computer.
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| − | :2) Extract the BMC firmware bundle.
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| − | :3) Run the following command '''./socflash -s option=u comport="4" cs=0 if=image-u-boot gpio_b=S71 gpio_a=S70 option=f'''
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| − | ::''- You can drop the'' '''option=f''' ''for a slower but verified write process''
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| − | ::''- if your serial interface can handle the baudrate 921600 add the parameter:'' ''' baudrate=921600'''
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| − | ::''- if you want to see what is going on, you can strace it by prepending:'' '''strace -e trace=open,close,read,write''' to the command above.
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| − | :4) Be Patient: it took me about 45 minutes to complete the flash process.
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| − | Notes:
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| − | - ''gpio_b=S71'' and ''gpio_a=S70'' are used to turn of the fpga watchdog timer before the flash process and then re-enables it after it's completed.
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