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7.2 Error Codes (1)
Following is a list of error codes in sequent display on the Mini PCI-E debug board.
TpointHook RoutinePost RoutineDescription
02hhookVerifyRealModeJpostVerifyRealModeJVerify Real Mode. If the CPU is in
(Stackless-No Memory)protected mode, turn on A20 and pulse the
reset line, forcing a shutdown 0.NOTE:
Hook routine should not alter DX, which
holds the powerup CPU ID.
03hhookDisableNmiJpostDisableNmiJDisable Non-Maskable Interrupts.
04hhookCpuGetTypeJCpuGetTypeJ (Stackless) Get CPU type from CPU registers and other
methods. Save CPU type in
NVRAM.NOTE: Hook routine should not
alter DX, which holds the powerup CPU ID.
06hhookHardwareInitJpostHardwareInitializeJInitialize system hardware. Reset the DMA
(Stackless)controllers, disable the videos, clear any
pending interrupts from the real-time clock
and set up port B register.
07hhookCsBiosDeshadowJcsBiosDeshadowJDisable system ROM shadow and start to
(Stackless, Optional)execute ROMEXEC code from the flash
part. This task is pulled into the build only
when the ROMEXEC relocation is installed.
08hhookChipsetInitJcsInitializeJ (Stackless)Initialize chip set registers to the Initial
OSl
09hhookSetInPostFlagJpostSetInPostFlagJSet in-POST flag in CMOS that indicates
we are in POST. If this bit is not cleared by
postClearBootFlagJ (AEh), the
TrustedCore on next boot determines that
the current configuration caused POST to
fail and uses default values for
configuration. Clear the
0AhhookCpuInitialize1JcpuInitializeJ (Stackless) Initialize CPU registers
(Warm)
hookCpuInitialize2J (Cold)
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