diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/include/asm/glue-proc.h | 18 | ||||
| -rw-r--r-- | arch/arm/mm/proc-v7.S | 37 |
2 files changed, 45 insertions, 10 deletions
diff --git a/arch/arm/include/asm/glue-proc.h b/arch/arm/include/asm/glue-proc.h index 74a8b84..74be7c2 100644 --- a/arch/arm/include/asm/glue-proc.h +++ b/arch/arm/include/asm/glue-proc.h @@ -221,15 +221,6 @@ # endif #endif -#ifdef CONFIG_CPU_V7 -# ifdef CPU_NAME -# undef MULTI_CPU -# define MULTI_CPU -# else -# define CPU_NAME cpu_v7 -# endif -#endif - #ifdef CONFIG_CPU_V7M # ifdef CPU_NAME # undef MULTI_CPU @@ -248,6 +239,15 @@ # endif #endif +#ifdef CONFIG_CPU_V7 +/* + * Cortex-A9 needs a different suspend/resume function, so we need + * multiple CPU support for ARMv7 anyway. + */ +# undef MULTI_CPU +# define MULTI_CPU +#endif + #ifndef MULTI_CPU #define cpu_proc_init __glue(CPU_NAME,_proc_init) #define cpu_proc_fin __glue(CPU_NAME,_proc_fin) diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S index c8726ab..43951ad 100644 --- a/arch/arm/mm/proc-v7.S +++ b/arch/arm/mm/proc-v7.S @@ -152,6 +152,40 @@ ENTRY(cpu_v7_do_resume) ENDPROC(cpu_v7_do_resume) #endif +/* + * Cortex-A9 processor functions + */ + globl_equ cpu_ca9mp_proc_init, cpu_v7_proc_init + globl_equ cpu_ca9mp_proc_fin, cpu_v7_proc_fin + globl_equ cpu_ca9mp_reset, cpu_v7_reset + globl_equ cpu_ca9mp_do_idle, cpu_v7_do_idle + globl_equ cpu_ca9mp_dcache_clean_area, cpu_v7_dcache_clean_area + globl_equ cpu_ca9mp_switch_mm, cpu_v7_switch_mm + globl_equ cpu_ca9mp_set_pte_ext, cpu_v7_set_pte_ext +.globl cpu_ca9mp_suspend_size +.equ cpu_ca9mp_suspend_size, cpu_v7_suspend_size + 4 * 2 +#ifdef CONFIG_ARM_CPU_SUSPEND +ENTRY(cpu_ca9mp_do_suspend) + stmfd sp!, {r4 - r5} + mrc p15, 0, r4, c15, c0, 1 @ Diagnostic register + mrc p15, 0, r5, c15, c0, 0 @ Power register + stmia r0!, {r4 - r5} + ldmfd sp!, {r4 - r5} + b cpu_v7_do_suspend +ENDPROC(cpu_ca9mp_do_suspend) + +ENTRY(cpu_ca9mp_do_resume) + ldmia r0!, {r4 - r5} + mrc p15, 0, r10, c15, c0, 1 @ Read Diagnostic register + teq r4, r10 @ Already restored? + mcrne p15, 0, r4, c15, c0, 1 @ No, so restore it + mrc p15, 0, r10, c15, c0, 0 @ Read Power register + teq r5, r10 @ Already restored? + mcrne p15, 0, r5, c15, c0, 0 @ No, so restore it + b cpu_v7_do_resume +ENDPROC(cpu_ca9mp_do_resume) +#endif + #ifdef CONFIG_CPU_PJ4B globl_equ cpu_pj4b_switch_mm, cpu_v7_switch_mm globl_equ cpu_pj4b_set_pte_ext, cpu_v7_set_pte_ext @@ -418,6 +452,7 @@ __v7_setup_stack: @ define struct processor (see <asm/proc-fns.h> and proc-macros.S) define_processor_functions v7, dabort=v7_early_abort, pabort=v7_pabort, suspend=1 + define_processor_functions ca9mp, dabort=v7_early_abort, pabort=v7_pabort, suspend=1 #ifdef CONFIG_CPU_PJ4B define_processor_functions pj4b, dabort=v7_early_abort, pabort=v7_pabort, suspend=1 #endif @@ -470,7 +505,7 @@ __v7_ca5mp_proc_info: __v7_ca9mp_proc_info: .long 0x410fc090 .long 0xff0ffff0 - __v7_proc __v7_ca9mp_setup + __v7_proc __v7_ca9mp_setup, proc_fns = ca9mp_processor_functions .size __v7_ca9mp_proc_info, . - __v7_ca9mp_proc_info #endif /* CONFIG_ARM_LPAE */ |
