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- ! Copyright 2005,2006,2007,2009 Imagination Technologies
- #include <linux/init.h>
- #include <asm/metag_mem.h>
- #include <generated/asm-offsets.h>
- #undef __exit
- __HEAD
- ! Setup the stack and get going into _metag_start_kernel
- .global __start
- .type __start,function
- __start:
- ! D1Ar1 contains pTBI (ISTAT)
- ! D0Ar2 contains pTBI
- ! D1Ar3 contains __pTBISegs
- ! D0Ar4 contains kernel arglist pointer
- MOVT D0Re0,#HI(___pTBIs)
- ADD D0Re0,D0Re0,#LO(___pTBIs)
- SETL [D0Re0],D0Ar2,D1Ar1
- MOVT D0Re0,#HI(___pTBISegs)
- ADD D0Re0,D0Re0,#LO(___pTBISegs)
- SETD [D0Re0],D1Ar3
- MOV A0FrP,#0
- MOV D0Re0,#0
- MOV D1Re0,#0
- MOV D1Ar3,#0
- MOV D1Ar1,D0Ar4 !Store kernel boot params
- MOV D1Ar5,#0
- MOV D0Ar6,#0
- #ifdef CONFIG_METAG_DSP
- MOV D0.8,#0
- #endif
- MOVT A0StP,#HI(_init_thread_union)
- ADD A0StP,A0StP,#LO(_init_thread_union)
- ADD A0StP,A0StP,#THREAD_INFO_SIZE
- MOVT D1RtP,#HI(_metag_start_kernel)
- CALL D1RtP,#LO(_metag_start_kernel)
- .size __start,.-__start
- !! Needed by TBX
- .global __exit
- .type __exit,function
- __exit:
- XOR TXENABLE,D0Re0,D0Re0
- .size __exit,.-__exit
- #ifdef CONFIG_SMP
- .global _secondary_startup
- .type _secondary_startup,function
- _secondary_startup:
- #if CONFIG_PAGE_OFFSET < LINGLOBAL_BASE
- ! In case GCOn has just been turned on we need to fence any writes that
- ! the boot thread might have performed prior to coherency taking effect.
- MOVT D0Re0,#HI(LINSYSEVENT_WR_ATOMIC_UNLOCK)
- MOV D1Re0,#0
- SETD [D0Re0], D1Re0
- #endif
- MOVT A0StP,#HI(_secondary_data_stack)
- ADD A0StP,A0StP,#LO(_secondary_data_stack)
- GETD A0StP,[A0StP]
- ADD A0StP,A0StP,#THREAD_INFO_SIZE
- B _secondary_start_kernel
- .size _secondary_startup,.-_secondary_startup
- #endif
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