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Diffstat (limited to 'Documentation/mysteries_intel.txt')
| -rw-r--r-- | Documentation/mysteries_intel.txt | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/Documentation/mysteries_intel.txt b/Documentation/mysteries_intel.txt new file mode 100644 index 0000000..d6d3dfb --- /dev/null +++ b/Documentation/mysteries_intel.txt @@ -0,0 +1,18 @@ += BBAR on ICH8 = + There is no sign of BBAR (BIOS Base Address Configuration Register) in the + public datasheet (or specification update) of the ICH8. Also, the offset of + that register has changed between ICH7 (SPIBAR + 50h) and ICH9 (SPIBAR + + A0h), so we have no clue if or where it is on ICH8. Out current policy is to + not touch it at all and assume/hope it is 0. + += Accesses beyond region bounds in descriptor mode = + Intel's flash image tool will always expand the last region so that it covers + the whole flash chip, but some boards ship with a different configuration. + It seems that in descriptor mode all addresses outside the used regions can not + be accessed whatsoever. This is not specified anywhere publicly as far as we + could tell. flashrom does not handle this explicitly yet. It will just fail + when trying to touch an address outside of any region. + See also http://www.flashrom.org/pipermail/flashrom/2011-August/007606.html + += Unlocking the ME region = +TODO |
