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powerpc/mpc8xxx: SECURE BOOT- Disable law 0 for non PBL platforms 

ISBC creates a LAW 0 entry for non PBL platforms, which is not
disabled before transferring the control to uboot.
The LAW 0 entry has to be disabled.

Signed-off-by: Aneesh Bansal <aneesh.bansal@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
This commit is contained in:
Aneesh Bansal 2014-03-11 23:21:45 +05:30 committed by York Sun
parent 50c7636764
commit 7efb4b5197
1 changed files with 10 additions and 0 deletions
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arch/powerpc/cpu/mpc8xxx/law.c
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@ -233,6 +233,16 @@ void init_laws(void)
#error FSL_HW_NUM_LAWS can not be greater than 32 w/o code changes
#endif
#if defined(CONFIG_SECURE_BOOT) && defined(CONFIG_E500) && \
!defined(CONFIG_E500MC)
/* ISBC (Boot ROM) creates a LAW 0 entry for non PBL platforms,
* which is not disabled before transferring the control to uboot.
* Disable the LAW 0 entry here.
*/
disable_law(0);
#endif
/*
* Any LAWs that were set up before we booted assume they are meant to
* be around and mark them used.