1/* 2 * Startup glue code to uncompress the kernel 3 * 4 * Copyright IBM Corp. 2010 5 * 6 * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> 7 */ 8 9#include <linux/init.h> 10#include <asm/asm-offsets.h> 11#include <asm/thread_info.h> 12#include <asm/page.h> 13#include "sizes.h" 14 15__HEAD 16 .globl startup_continue 17startup_continue: 18 basr %r13,0 # get base 19.LPG1: 20 # setup stack 21 l %r15,.Lstack-.LPG1(%r13) 22 ahi %r15,-96 23 l %r1,.Ldecompress-.LPG1(%r13) 24 basr %r14,%r1 25 # setup registers for memory mover & branch to target 26 lr %r4,%r2 27 l %r2,.Loffset-.LPG1(%r13) 28 la %r4,0(%r2,%r4) 29 l %r3,.Lmvsize-.LPG1(%r13) 30 lr %r5,%r3 31 # move the memory mover someplace safe 32 la %r1,0x200 33 mvc 0(mover_end-mover,%r1),mover-.LPG1(%r13) 34 # decompress image is started at 0x11000 35 lr %r6,%r2 36 br %r1 37mover: 38 mvcle %r2,%r4,0 39 jo mover 40 br %r6 41mover_end: 42 43 .align 8 44.Lstack: 45 .long 0x8000 + (1<<(PAGE_SHIFT+THREAD_ORDER)) 46.Ldecompress: 47 .long decompress_kernel 48.Loffset: 49 .long 0x11000 50.Lmvsize: 51 .long SZ__bss_start 52