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>
18 #include <asm/book3s/64/mmu-hash.h>
20 /* Entry: r3 = crap, r4 = ptr to cputable entry
22 * Note that we can be called twice for pseudo-PVRs
24 _GLOBAL(__setup_cpu_power7)
32 li r4,(LPCR_LPES1 >> LPCR_LPES_SH)
37 _GLOBAL(__restore_cpu_power7)
45 li r4,(LPCR_LPES1 >> LPCR_LPES_SH)
50 _GLOBAL(__setup_cpu_power8)
61 ori r3, r3, LPCR_PECEDH
62 li r4,0 /* LPES = 0 */
66 bl __init_PMU_HV_ISA207
70 _GLOBAL(__restore_cpu_power8)
82 ori r3, r3, LPCR_PECEDH
83 li r4,0 /* LPES = 0 */
87 bl __init_PMU_HV_ISA207
91 _GLOBAL(__setup_cpu_power9)
103 LOAD_REG_IMMEDIATE(r4, LPCR_PECEDH | LPCR_PECE_HVEE | LPCR_HVICE | LPCR_HEIC)
105 LOAD_REG_IMMEDIATE(r4, LPCR_UPRT | LPCR_HR)
107 li r4,0 /* LPES = 0 */
108 bl __init_LPCR_ISA300
114 _GLOBAL(__restore_cpu_power9)
127 LOAD_REG_IMMEDIATE(r4, LPCR_PECEDH | LPCR_PECE_HVEE | LPCR_HVICE | LPCR_HEIC)
129 LOAD_REG_IMMEDIATE(r4, LPCR_UPRT | LPCR_HR)
131 li r4,0 /* LPES = 0 */
132 bl __init_LPCR_ISA300
139 /* Disable CPU_FTR_HVMODE and exit if MSR:HV is not set */
143 ld r5,CPU_SPEC_FEATURES(r4)
144 LOAD_REG_IMMEDIATE(r6,CPU_FTR_HVMODE)
146 std r5,CPU_SPEC_FEATURES(r4)
150 /* Setup a sane LPCR:
151 * Called with initial LPCR in R3 and desired LPES 2-bit value in R4
153 * LPES = 0b01 (HSRR0/1 used for 0x500)
157 * VC = 0b100 (VPM0=1, VPM1=0, ISL=0)
158 * VRMASD = 0b10000 (L=1, LP=00)
160 * Other bits untouched for now
163 rldimi r3,r5, LPCR_VRMASD_SH, 64-LPCR_VRMASD_SH-5
165 /* POWER9 has no VRMASD */
167 rldimi r3,r4, LPCR_LPES_SH, 64-LPCR_LPES_SH-2
168 ori r3,r3,(LPCR_PECE0|LPCR_PECE1|LPCR_PECE2)
170 rldimi r3,r5, LPCR_DPFD_SH, 64-LPCR_DPFD_SH-3
171 clrrdi r3,r3,1 /* clear HDICE */
173 rldimi r3,r5, LPCR_VC_SH, 0
180 ori r3,r3,FSCR_TAR|FSCR_DSCR|FSCR_EBB
186 ori r3,r3,HFSCR_TAR|HFSCR_TM|HFSCR_BHRB|HFSCR_PM|\
187 HFSCR_DSCR|HFSCR_VECVSX|HFSCR_FP|HFSCR_EBB|HFSCR_MSGP
196 __init_PMU_HV_ISA207: