xx30 legacy boards : CBFS_SIZE fixed to 6FFFFF #1340
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IFD reported BIOS region size SHOULD match CBFS_SIZE unless coreboot has some limitation (mrc.bin blob limitation or other). Reminder that legacy boards only existence reason is for users not wanting to unlock IFD nor neuter ME. That is: flashing the IFD defined BIOS region from legacy-flash image/1vyrain (4mb image fitting TOP SPI or injected through 1vyrain). Otherwise, any new comer should prefer external flashing of maximized board counterparts. --- Lenovo BIOS dump from x230: user@heads-tests:~/heads$ ~/heads/build/x86/coreboot-4.13/util/ifdtool/ifdtool --layout /tmp/layout.txt ~/QubesIncoming/Insurgo/bottom_backup.rom File /home/user/QubesIncoming/Insurgo/bottom_backup.rom is 8388608 bytes Wrote layout to /tmp/layout.txt user@heads-tests:~/heads$ cat /tmp/layout.txt 00000000:00000fff fd 00500000:00bfffff bios 00003000:004fffff me 00001000:00002fff gbe 00bfffff - 00500000 = 6FFFFF
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Not needed. Corruption most probably came from local builds. |
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IFD reported BIOS region size SHOULD match CBFS_SIZE unless coreboot has some limitation (mrc.bin blob limitation or other). Reminder that legacy boards only existence reason is for users not wanting to unlock IFD nor neuter ME.
That is: flashing the IFD defined BIOS region from legacy-flash image/1vyrain (4mb image fitting TOP SPI or injected through 1vyrain). Otherwise, any new comer should prefer external flashing of maximized board counterparts. ---
Lenovo BIOS dump from x230:
user@heads-tests:~/heads$ ~/heads/build/x86/coreboot-4.13/util/ifdtool/ifdtool --layout /tmp/layout.txt
/QubesIncoming/Insurgo/bottom_backup.rom File /home/user/QubesIncoming/Insurgo/bottom_backup.rom is 8388608 bytes Wrote layout to /tmp/layout.txt/heads$ cat /tmp/layout.txtuser@heads-tests:
00000000:00000fff fd
00500000:00bfffff bios
00003000:004fffff me
00001000:00002fff gbe
00bfffff - 00500000 = 6FFFFF