HomeFreeBSD

powerpc/mpc85xx: Use the proper (EREF) form of writing to DBCR0

Description

powerpc/mpc85xx: Use the proper (EREF) form of writing to DBCR0

DBCR0, according to the Freescale EREF, is guaranteed to be updated, and
changes take effect, after an isync plus change of MSR[DE] from 0 to 1.
Otherwise it's guaranteed to be updated "eventually". Use the expected
synchronization sequence to write it for resetting.

This prevents "Reset failed" from being printed immediately before the CPU
resets.

MFC after: 2 weeks

Details

Committed
jhibbitsMay 23 2019, 3:47 AM
Parents
rS348146: powerpc/booke: It helps to set variables before using them
Branches
Unknown
Tags
Unknown