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arch/x86: Unbreak SMP startup on x86_64

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A last minute "cleanup" to the EFI startup path (on a system where I
had SMP disabled) moved the load of the x86_cpuboot[0] entry into RBP
into the main startup code, which is wrong because on auxiliary CPUs
that's already set up by the 16/32 bit entry code to point to the
OTHER entries.

Put it back where it belongs.

Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
This commit is contained in:
Andy Ross 2020-07-06 17:54:04 -07:00 • committed by Anas Nashif
commit 4d5e67ed13
1 changed files with 1 additions and 1 deletions
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2
arch/x86/core/intel64/locore.S
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@ -148,7 +148,6 @@ enter_code64:
movw %ax, %ss
movw %ax, %fs
movq $x86_cpuboot, %rbp
movw __x86_cpuboot_t_tr_OFFSET(%rbp), %ax
ltr %ax
@ -224,6 +223,7 @@ __start64:
outb %al, $0xA1
/* Far call into the Zephyr code segment */
movq $x86_cpuboot, %rbp
mov jmpdesc, %rax
jmp *%rax
jmpdesc: