Bootup Signal Order
(Redirected from Reset to EFI POST State for Ivy Bridge Haswell and Broadwell)
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Ivy Bridge Haswell and Broadwell
Legend
GREY boxes are power rails
GREEN boxes are power good signals
BLUE boxes are enable/reset signals
YELLOW boxes are clocks
ORANGE boxes are not a signal "coming on" but still important steps in the sequence.
S3 to S0 State for Ivy Bridge Haswell and Broadwell
This comes after "G3 to S3 State for Ivy Bridge Haswell and Broadwell" and before "S0 to Reset State for Ivy Bridge Haswell and Broadwell". All credit to Piernov.
S0 to Reset State for Ivy Bridge Haswell and Broadwell
This comes after "S3 to S0 State for Ivy Bridge Haswell and Broadwell" and before "Reset to EFI POST State for Ivy Bridge Haswell and Broadwell". All credit to Piernov.
Errata
Somewhere in there, PM_SYSRST_L is required to be high, otherwise the platform will stay in a reset state.
Reset to EFI POST State for Ivy Bridge Haswell and Broadwell
This comes after G3 to S3 State for Ivy Bridge Haswell and Broadwell. All credit to Piernov.