2 * This file contains low level CPU setup functions.
3 * Copyright (C) 2003 Benjamin Herrenschmidt (benh@kernel.crashing.org)
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version
8 * 2 of the License, or (at your option) any later version.
12 #include <asm/processor.h>
14 #include <asm/cputable.h>
15 #include <asm/ppc_asm.h>
16 #include <asm/asm-offsets.h>
17 #include <asm/cache.h>
19 /* Entry: r3 = crap, r4 = ptr to cputable entry
21 * Note that we can be called twice for pseudo-PVRs
23 _GLOBAL(__setup_cpu_power7)
36 _GLOBAL(__restore_cpu_power7)
49 _GLOBAL(__setup_cpu_power8)
58 oris r3, r3, LPCR_AIL_3@h
64 _GLOBAL(__restore_cpu_power8)
73 oris r3, r3, LPCR_AIL_3@h
80 /* Disable CPU_FTR_HVMODE and exit if MSR:HV is not set */
84 ld r5,CPU_SPEC_FEATURES(r4)
85 LOAD_REG_IMMEDIATE(r6,CPU_FTR_HVMODE)
87 std r5,CPU_SPEC_FEATURES(r4)
92 * Called with initial LPCR in R3
94 * LPES = 0b01 (HSRR0/1 used for 0x500)
98 * VC = 0b100 (VPM0=1, VPM1=0, ISL=0)
99 * VRMASD = 0b10000 (L=1, LP=00)
101 * Other bits untouched for now
104 rldimi r3,r5, LPCR_LPES_SH, 64-LPCR_LPES_SH-2
105 ori r3,r3,(LPCR_PECE0|LPCR_PECE1|LPCR_PECE2)
107 rldimi r3,r5, LPCR_DPFD_SH, 64-LPCR_DPFD_SH-3
108 clrrdi r3,r3,1 /* clear HDICE */
110 rldimi r3,r5, LPCR_VC_SH, 0
112 rldimi r3,r5, LPCR_VRMASD_SH, 64-LPCR_VRMASD_SH-5
119 ori r3,r3,FSCR_TAR|FSCR_DSCR
127 li r7,0xc00 /* IS field = 0b11 */