diff options
Diffstat (limited to 'arch/arc/kernel/head.S')
| -rw-r--r-- | arch/arc/kernel/head.S | 31 |
1 files changed, 29 insertions, 2 deletions
diff --git a/arch/arc/kernel/head.S b/arch/arc/kernel/head.S index 6f41265f6250..8d541f53fae3 100644 --- a/arch/arc/kernel/head.S +++ b/arch/arc/kernel/head.S @@ -14,6 +14,7 @@ #include <asm/entry.h> #include <asm/arcregs.h> #include <asm/cache.h> +#include <asm/dsp-impl.h> #include <asm/irqflags.h> .macro CPU_EARLY_SETUP @@ -58,7 +59,33 @@ bclr r5, r5, STATUS_AD_BIT #endif kflag r5 -#endif + +#ifdef CONFIG_ARC_LPB_DISABLE + lr r5, [ARC_REG_LPB_BUILD] + breq r5, 0, 1f ; LPB doesn't exist + mov r5, 1 + sr r5, [ARC_REG_LPB_CTRL] +1: +#endif /* CONFIG_ARC_LPB_DISABLE */ + + /* On HSDK, CCMs need to remapped super early */ +#ifdef CONFIG_ARC_SOC_HSDK + mov r6, 0x60000000 + lr r5, [ARC_REG_ICCM_BUILD] + breq r5, 0, 1f + sr r6, [ARC_REG_AUX_ICCM] +1: + lr r5, [ARC_REG_DCCM_BUILD] + breq r5, 0, 2f + sr r6, [ARC_REG_AUX_DCCM] +2: +#endif /* CONFIG_ARC_SOC_HSDK */ + +#endif /* CONFIG_ISA_ARCV2 */ + + ; Config DSP_CTRL properly, so kernel may use integer multiply, + ; multiply-accumulate, and divide operations + DSP_EARLY_INIT .endm .section .init.text, "ax",@progbits @@ -138,7 +165,7 @@ ENTRY(first_lines_of_secondary) ; setup stack (fp, sp) mov fp, 0 - ; set it's stack base to tsk->thread_info bottom + ; set its stack base to tsk->thread_info bottom GET_TSK_STACK_BASE r0, sp j start_kernel_secondary |