powerpc/mpc8xxx: SECURE BOOT- Disable law 0 for non PBL platforms
PATCH v2 1/1 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 <[email protected]>
--- arch/powerpc/cpu/mpc8xxx/law.c | 10 ++++++++++ 1 file changed, 10 insertions(+)
Changes from v1:
The LAW was being disabled in start.S in v1. As per discussion, it is moved out of start.S and done when U-boot initializes other LAW's.
arch/powerpc/cpu/mpc8xxx/law.c +10 -0
@@ -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.
Signature · 1 line
1.8.1.4
PATCH v2 1/1 powerpc/mpc8xxx: SECURE BOOT- Disable law 0 for non PBL platforms
Quoted 6 lines · Aneesh Bansal
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 <[email protected]>---
Applied to u-boot-mpc85xx/master, thanks.
York