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author | Scott Duplichan <scott@notabs.org> | 2010-10-19 04:26:17 +0000 |
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committer | Scott Duplichan <scott@notabs.org> | 2010-10-19 04:26:17 +0000 |
commit | af786b618d5e1aafe1e5b8d9ed49b55903381a2e (patch) | |
tree | 9151e98cdbd799b282888d5585fd97cc6ca63f5c /documentation/LinuxBIOS-AMD64.tex | |
parent | d7acdfb44acfcebe6107b7286c5e4b79f25a33e0 (diff) |
When debug logging is enabled, a message such as '* AP 02 timed out:02010501'
is sometimes logged. The reason is that the AP first sets a completion value
such as 0x13, which is what function wait_cpu_state() is waiting for. Then a
short time later, the AP calls function init_fidvid_ap(). This function sets
a completion value of 01. When logging is off, wait_cpu_state is fast enough
to see the initial completion value for each of the APs. But with logging
enabled, one or more APs may go on to complete function init_fidvid_ap, which
sets the completion value to 01. While mostly harmless, the timeout does
increase boot time. This patch eliminates the timeout by making function
wait_cpu_state recognize 01 as an additional valid AP completion value.
Signed-off-by: Scott Duplichan <scott@notabs.org>
Acked-by: Peter Stuge <peter@stuge.se>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5966 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'documentation/LinuxBIOS-AMD64.tex')
0 files changed, 0 insertions, 0 deletions