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The 8xx cannot access the TBL and TBU registers using mfspr/mtspr It must be accessed using mftb/mftbu Due to this, there is a number of places with #ifdef CONFIG_8xx This patch defines new macros MFTBL(x) and MFTBU(x) on the same model as MFTB(x) and tries to make use of them as much as possible. In arch/powerpc/include/asm/timex.h, we also remove the ifdef for the asm() operands as the compiler doesn't mind unused operands Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
92 lines
2 KiB
C
92 lines
2 KiB
C
#ifndef _PPC64_PPC_ASM_H
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#define _PPC64_PPC_ASM_H
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/*
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*
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* Definitions used by various bits of low-level assembly code on PowerPC.
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*
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* Copyright (C) 1995-1999 Gary Thomas, Paul Mackerras, Cort Dougan.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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/* Condition Register Bit Fields */
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#define cr0 0
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#define cr1 1
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#define cr2 2
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#define cr3 3
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#define cr4 4
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#define cr5 5
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#define cr6 6
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#define cr7 7
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/* General Purpose Registers (GPRs) */
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#define r0 0
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#define r1 1
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#define r2 2
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#define r3 3
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#define r4 4
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#define r5 5
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#define r6 6
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#define r7 7
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#define r8 8
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#define r9 9
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#define r10 10
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#define r11 11
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#define r12 12
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#define r13 13
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#define r14 14
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#define r15 15
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#define r16 16
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#define r17 17
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#define r18 18
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#define r19 19
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#define r20 20
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#define r21 21
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#define r22 22
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#define r23 23
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#define r24 24
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#define r25 25
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#define r26 26
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#define r27 27
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#define r28 28
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#define r29 29
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#define r30 30
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#define r31 31
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#define SPRN_TBRL 268
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#define SPRN_TBRU 269
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#define SPRN_HSRR0 0x13A /* Hypervisor Save/Restore 0 */
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#define SPRN_HSRR1 0x13B /* Hypervisor Save/Restore 1 */
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#define MSR_LE 0x0000000000000001
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#define FIXUP_ENDIAN \
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tdi 0,0,0x48; /* Reverse endian of b . + 8 */ \
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b $+44; /* Skip trampoline if endian is good */ \
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.long 0xa600607d; /* mfmsr r11 */ \
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.long 0x01006b69; /* xori r11,r11,1 */ \
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.long 0x00004039; /* li r10,0 */ \
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.long 0x6401417d; /* mtmsrd r10,1 */ \
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.long 0x05009f42; /* bcl 20,31,$+4 */ \
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.long 0xa602487d; /* mflr r10 */ \
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.long 0x14004a39; /* addi r10,r10,20 */ \
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.long 0xa6035a7d; /* mtsrr0 r10 */ \
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.long 0xa6037b7d; /* mtsrr1 r11 */ \
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.long 0x2400004c /* rfid */
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#ifdef CONFIG_PPC_8xx
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#define MFTBL(dest) mftb dest
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#define MFTBU(dest) mftbu dest
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#else
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#define MFTBL(dest) mfspr dest, SPRN_TBRL
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#define MFTBU(dest) mfspr dest, SPRN_TBRU
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#endif
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#endif /* _PPC64_PPC_ASM_H */
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