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x86: Disable CAR before relocation on platforms that need it 

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