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/*
* arch/mips/boot/compressed/head.S
*
* Copyright (C) 1995 by Ralf Baechle
*
* Head.S contains the MIPS exception handler and startup code.
*/
#include <asm/asm.h>
.text
.set noreorder
/*
* Compressed kernel entry
*/
NESTED(kernel_entry, 16, sp)
/*
* Set EXL in c0_status. The results in the lowest two
* gigabytes identity mapped.
*/
mfc0 t0,CP0_STATUS
ori t0,4
mtc0 t0,CP0_STATUS
/*
* Clear BSS first so that there are no surprises...
*/
la t0,_edata
la t1,_end
sw zero,(t0)
1: addiu t0,4
bnel t0,t1,1b
sw zero,(t0)
END(kernel_entry)
/*
* Do the decompression, and jump to the new kernel..
*/
jal C_LABEL(decompress_kernel)
nop
/*
* Flush caches
*/
jal C_LABEL(cacheflush)
/*
* Jump into the decompressed kernel
*/
la t0,KSEG0
jr t0
nop
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