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Fix stack assignment during CPU initialization 

There are two errors in the code. The first one is a missing
$ sign in mov _stack, %esp. Thanks to Ronald G Minnich for
catching that bug.

The second bug is the 'incl %eax', which shouldn't be there, as
there's no secondary CPU with index 0. CPU0 uses always the stack
below _estack.

Change-Id: Id267a654ba95b0e898eeaaafb2403b438250a563
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/1212
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
This commit is contained in:
Sven Schnelle 2012-07-11 21:41:06 +02:00 committed by Ronald G. Minnich
parent bc8c996608
commit 6f73a5bf70
1 changed files with 1 additions and 2 deletions
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3
src/cpu/x86/lapic/secondary.S
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@ -53,10 +53,9 @@ __ap_protected_start:
movl $1, %eax
lock xadd %eax, cpucount
movl %eax, %ecx
incl %eax
/* assign stack for this specific cpu */
mov _stack, %esp
mov $_stack, %esp
mov $CONFIG_STACK_SIZE, %ebx
mul %ebx
add %eax, %esp