Board:lenovo/x60/Installation: Difference between revisions
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# Run <code>dd if=coreboot.rom of=top64k.bin bs=1 skip=$[$(stat -c %s coreboot.rom) - 0x10000] count=64k</code> | # Run <code>dd if=coreboot.rom of=top64k.bin bs=1 skip=$[$(stat -c %s coreboot.rom) - 0x10000] count=64k</code> | ||
# Run <code>dd if=coreboot.rom bs=1 skip=$[$(stat -c %s coreboot.rom) - 0x20000] count=64k | hexdump</code> | # Run <code>dd if=coreboot.rom bs=1 skip=$[$(stat -c %s coreboot.rom) - 0x20000] count=64k | hexdump</code> | ||
#: Verify that the complete range is filled with ff bytes before proceeding! The above command must output: | #: Verify that the complete range is filled with ff bytes before proceeding! The above command must output: | ||
#: 0000000 ffff ffff ffff ffff ffff ffff ffff ffff | #: <code>0000000 ffff ffff ffff ffff ffff ffff ffff ffff</code> | ||
#: * | #: <code>*</code> | ||
#: 0010000</ | #: <code>0010000</code> | ||
#: If this is not the case, the coreboot image needs to be rebuilt with the second-to-last 64kbyte block unused. | #: If this is not the case, the coreboot image needs to be rebuilt with the second-to-last 64kbyte block unused. | ||
# Run <code>dd if=top64k.bin of=coreboot.rom bs=1 seek=$[$(stat -c %s coreboot.rom) - 0x20000] count=64k conv=notrunc</code> | # Run <code>dd if=top64k.bin of=coreboot.rom bs=1 seek=$[$(stat -c %s coreboot.rom) - 0x20000] count=64k conv=notrunc</code> | ||
Revision as of 06:35, 8 August 2012
Lenovo X60, X60s, T60 and T60p flashing instructions.
These Lenovo laptops have a register that must be flipped before coreboot can be flashed. Detailed instructions follow.
You will need: the flashrom source, a small patch [WHAT PATCH? --rah], and the bucts utility.
- Patch flashrom to use RES1 SPI identification and spi_chip_write1 for your flash chip, as well as change the flash chip model id to fit the RES1 command. [WHAT DOES THIS MEAN? HOW DO YOU DO THIS? --rah]
- Run
flashrom -p internal:laptop=force_I_want_a_brick -r factory.bin- This step is IMPORTANT since the factory BIOS in your machine is tied to your particular system board (or "planar" in IBM FRU terms) with a unique ID not present in factory BIOS updates.
- Run
dd if=coreboot.rom of=top64k.bin bs=1 skip=$[$(stat -c %s coreboot.rom) - 0x10000] count=64k - Run
dd if=coreboot.rom bs=1 skip=$[$(stat -c %s coreboot.rom) - 0x20000] count=64k | hexdump- Verify that the complete range is filled with ff bytes before proceeding! The above command must output:
0000000 ffff ffff ffff ffff ffff ffff ffff ffff*0010000- If this is not the case, the coreboot image needs to be rebuilt with the second-to-last 64kbyte block unused.
- Run
dd if=top64k.bin of=coreboot.rom bs=1 seek=$[$(stat -c %s coreboot.rom) - 0x20000] count=64k conv=notrunc - Run
bucts 1 - Run
flashrom -p internal:laptop=force_I_want_a_brick -w coreboot.rom- This will be slow, and shall generate an erase error at e.g. 0x1f0000 when working with a 2 Mbyte flash chip.
- Power cycle the machine, now starting with coreboot
- Undo the flashrom patch, so that you have a stock flashrom
- Run
bucts 0 - Run
flashrom -p internal:laptop=force_I_want_a_brick -w coreboot.rom.- This will successfully overwrite the entire flash chip, including the last 64k that were write protected with the factory BIOS.
These instructions were gleaned from the following mailing list threads: http://thread.gmane.org/gmane.linux.bios/69354 http://thread.gmane.org/gmane.linux.bios.flashrom/575