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x86: Disable CAR before relocation on platforms that need it

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For platforms with CAR we should disable it before relocation. Check if
this function is available and call it if so.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2015-01-01 16:18:13 -07:00
parent 7b00896ade
commit 801d70ce02
1 changed files with 8 additions and 0 deletions
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8
arch/x86/cpu/start.S
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@ -205,6 +205,14 @@ board_init_f_r_trampoline:
/* Setup global descriptor table so gd->xyz works */
call setup_gdt
/* Set if we need to disable CAR */
.weak car_uninit
movl $car_uninit, %eax
cmpl $0, %eax
jz 1f
call car_uninit
1:
/* Re-enter U-Boot by calling board_init_f_r */
call board_init_f_r