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- /*
- * mips 24k machine assist for routerboard rb450g (minimal for reboot)
- */
- #include "mem.h"
- #include "mips.s"
- NOSCHED
- TEXT _main(SB), $0
- MOVW $setR30(SB), R30
- JMP main(SB)
- /* target for JALRHB in BARRIERS */
- TEXT ret(SB), $-4
- JMP (R22)
- NOP
- TEXT setsp(SB), $-4
- MOVW R1, SP
- RETURN
- TEXT coherence(SB), $-4
- BARRIERS(7, R7, cohhb)
- SYNC
- EHB
- RETURN
- /*
- * cache manipulation
- */
- /* the i and d caches may be different sizes, so clean them separately */
- TEXT cleancache(SB), $-4
- DI(10) /* intrs off, old status -> R10 */
- SYNC
- EHB
- MOVW R0, R1 /* index, not address */
- MOVW $ICACHESIZE, R9
- iccache:
- CACHE PI+IWBI, (R1) /* flush & invalidate I by index */
- SUBU $CACHELINESZ, R9
- ADDU $CACHELINESZ, R1
- BGTZ R9, iccache
- NOP
- MOVW R0, R1 /* index, not address */
- MOVW $DCACHESIZE, R9
- dccache:
- CACHE PD+IWBI, (R1) /* flush & invalidate D by index */
- SUBU $CACHELINESZ, R9
- ADDU $CACHELINESZ, R1
- BGTZ R9, dccache
- NOP
- SYNC
- MOVW R10, M(STATUS)
- JRHB(31) /* return and clear all hazards */
- SCHED
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