1/* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Copyright (C) 2000 Silicon Graphics, Inc. 7 * Copyright (C) 2005 Ralf Baechle <ralf@linux-mips.org> 8 */ 9#ifndef __ASM_MACH_IP27_KERNEL_ENTRY_H 10#define __ASM_MACH_IP27_KERNEL_ENTRY_H 11 12#include <asm/sn/addrs.h> 13#include <asm/sn/sn0/hubni.h> 14#include <asm/sn/klkernvars.h> 15 16/* 17 * Returns the local nasid into res. 18 */ 19 .macro GET_NASID_ASM res 20 dli \res, LOCAL_HUB_ADDR(NI_STATUS_REV_ID) 21 ld \res, (\res) 22 and \res, NSRI_NODEID_MASK 23 dsrl \res, NSRI_NODEID_SHFT 24 .endm 25 26 .macro kernel_entry_setup 27 GET_NASID_ASM t1 28 move t2, t1 # text and data are here 29 MAPPED_KERNEL_SETUP_TLB 30 .endm 31 32/* 33 * Do SMP slave processor setup necessary before we can savely execute C code. 34 */ 35 .macro smp_slave_setup 36 GET_NASID_ASM t1 37 dli t0, KLDIR_OFFSET + (KLI_KERN_VARS * KLDIR_ENT_SIZE) + \ 38 KLDIR_OFF_POINTER + CAC_BASE 39 dsll t1, NASID_SHFT 40 or t0, t0, t1 41 ld t0, 0(t0) # t0 points to kern_vars struct 42 lh t1, KV_RO_NASID_OFFSET(t0) 43 lh t2, KV_RW_NASID_OFFSET(t0) 44 MAPPED_KERNEL_SETUP_TLB 45 46 /* 47 * We might not get launched at the address the kernel is linked to, 48 * so we jump there. 49 */ 50 PTR_LA t0, 0f 51 jr t0 520: 53 .endm 54 55#endif /* __ASM_MACH_IP27_KERNEL_ENTRY_H */ 56