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arm: v7: Update VBAR only if available

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Not all ARM V7 based cpus has VBAR for remapping
vector base address. So, update VBAR only if it available.

Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
This commit is contained in:
Lokesh Vutla 2018-04-26 18:21:25 +05:30 committed by Tom Rini
parent 04ca871459
commit 2a5180535c
1 changed files with 2 additions and 0 deletions
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2
arch/arm/cpu/armv7/start.S
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@ -72,9 +72,11 @@ switch_to_hypervisor_ret:
bic r0, #CR_V @ V = 0
mcr p15, 0, r0, c1, c0, 0 @ Write CP15 SCTLR Register
#ifdef CONFIG_HAS_VBAR
/* Set vector address in CP15 VBAR register */
ldr r0, =_start
mcr p15, 0, r0, c12, c0, 0 @Set VBAR
#endif
#endif
/* the mask ROM code should have PLL and others stable */