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)
37 _GLOBAL(__restore_cpu_power7)
50 _GLOBAL(__setup_cpu_power8)
60 ori r3, r3, LPCR_PECEDH
68 _GLOBAL(__restore_cpu_power8)
79 ori r3, r3, LPCR_PECEDH
87 _GLOBAL(__setup_cpu_power9)
96 ori r3, r3, LPCR_PECEDH
103 _GLOBAL(__restore_cpu_power9)
113 ori r3, r3, LPCR_PECEDH
121 /* Disable CPU_FTR_HVMODE and exit if MSR:HV is not set */
125 ld r5,CPU_SPEC_FEATURES(r4)
126 LOAD_REG_IMMEDIATE(r6,CPU_FTR_HVMODE)
128 std r5,CPU_SPEC_FEATURES(r4)
132 /* Setup a sane LPCR:
133 * Called with initial LPCR in R3
135 * LPES = 0b01 (HSRR0/1 used for 0x500)
139 * VC = 0b100 (VPM0=1, VPM1=0, ISL=0)
140 * VRMASD = 0b10000 (L=1, LP=00)
142 * Other bits untouched for now
145 rldimi r3,r5, LPCR_LPES_SH, 64-LPCR_LPES_SH-2
146 ori r3,r3,(LPCR_PECE0|LPCR_PECE1|LPCR_PECE2)
148 rldimi r3,r5, LPCR_DPFD_SH, 64-LPCR_DPFD_SH-3
149 clrrdi r3,r3,1 /* clear HDICE */
151 rldimi r3,r5, LPCR_VC_SH, 0
153 rldimi r3,r5, LPCR_VRMASD_SH, 64-LPCR_VRMASD_SH-5
160 ori r3,r3,FSCR_TAR|FSCR_DSCR|FSCR_EBB
166 ori r3,r3,HFSCR_TAR|HFSCR_TM|HFSCR_BHRB|HFSCR_PM|\
167 HFSCR_DSCR|HFSCR_VECVSX|HFSCR_FP|HFSCR_EBB
172 * Clear the TLB using the specified IS form of tlbiel instruction
173 * (invalidate by congruence class). P7 has 128 CCs., P8 has 512.
176 li r6,POWER7_TLB_SETS
178 li r7,0xc00 /* IS field = 0b11 */
187 li r6,POWER8_TLB_SETS
189 li r7,0xc00 /* IS field = 0b11 */
198 li r6,POWER9_TLB_SETS_HASH
200 li r7,0xc00 /* IS field = 0b11 */