diff options
Diffstat (limited to 'arch/arm/kernel/head-nommu.S')
| -rw-r--r-- | arch/arm/kernel/head-nommu.S | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/arch/arm/kernel/head-nommu.S b/arch/arm/kernel/head-nommu.S index fb1a69eb49c1..6b4eb27b8758 100644 --- a/arch/arm/kernel/head-nommu.S +++ b/arch/arm/kernel/head-nommu.S @@ -158,7 +158,21 @@ __after_proc_init: bic r0, r0, #CR_V #endif mcr p15, 0, r0, c1, c0, 0 @ write control reg -#endif /* CONFIG_CPU_CP15 */ +#elif defined (CONFIG_CPU_V7M) + /* For V7M systems we want to modify the CCR similarly to the SCTLR */ +#ifdef CONFIG_CPU_DCACHE_DISABLE + bic r0, r0, #V7M_SCB_CCR_DC +#endif +#ifdef CONFIG_CPU_BPREDICT_DISABLE + bic r0, r0, #V7M_SCB_CCR_BP +#endif +#ifdef CONFIG_CPU_ICACHE_DISABLE + bic r0, r0, #V7M_SCB_CCR_IC +#endif + movw r3, #:lower16:(BASEADDR_V7M_SCB + V7M_SCB_CCR) + movt r3, #:upper16:(BASEADDR_V7M_SCB + V7M_SCB_CCR) + str r0, [r3] +#endif /* CONFIG_CPU_CP15 elif CONFIG_CPU_V7M */ ret lr ENDPROC(__after_proc_init) .ltorg |