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| author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
|---|---|---|
| committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
| commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
| tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/arch/powerpc/boot/util.S | |
| parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
| download | FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.gz FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.bz2 FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.zip | |
Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/arch/powerpc/boot/util.S')
| -rw-r--r-- | ANDROID_3.4.5/arch/powerpc/boot/util.S | 88 |
1 files changed, 0 insertions, 88 deletions
diff --git a/ANDROID_3.4.5/arch/powerpc/boot/util.S b/ANDROID_3.4.5/arch/powerpc/boot/util.S deleted file mode 100644 index 427ddfc1..00000000 --- a/ANDROID_3.4.5/arch/powerpc/boot/util.S +++ /dev/null @@ -1,88 +0,0 @@ -/* - * Copied from <file:arch/powerpc/kernel/misc_32.S> - * - * This file contains miscellaneous low-level functions. - * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org) - * - * Largely rewritten by Cort Dougan (cort@cs.nmt.edu) - * and Paul Mackerras. - * - * kexec bits: - * Copyright (C) 2002-2003 Eric Biederman <ebiederm@xmission.com> - * GameCube/ppc32 port Copyright (C) 2004 Albert Herranz - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - * - */ -#include "ppc_asm.h" - -#define SPRN_PVR 0x11F /* Processor Version Register */ - - .text - -/* udelay (on non-601 processors) needs to know the period of the - * timebase in nanoseconds. This used to be hardcoded to be 60ns - * (period of 66MHz/4). Now a variable is used that is initialized to - * 60 for backward compatibility, but it can be overridden as necessary - * with code something like this: - * extern unsigned long timebase_period_ns; - * timebase_period_ns = 1000000000 / bd->bi_tbfreq; - */ - .data - .globl timebase_period_ns -timebase_period_ns: - .long 60 - - .text -/* - * Delay for a number of microseconds - */ - .globl udelay -udelay: - mfspr r4,SPRN_PVR - srwi r4,r4,16 - cmpwi 0,r4,1 /* 601 ? */ - bne .udelay_not_601 -00: li r0,86 /* Instructions / microsecond? */ - mtctr r0 -10: addi r0,r0,0 /* NOP */ - bdnz 10b - subic. r3,r3,1 - bne 00b - blr - -.udelay_not_601: - mulli r4,r3,1000 /* nanoseconds */ - /* Change r4 to be the number of ticks using: - * (nanoseconds + (timebase_period_ns - 1 )) / timebase_period_ns - * timebase_period_ns defaults to 60 (16.6MHz) */ - mflr r5 - bl 0f -0: mflr r6 - mtlr r5 - lis r5,0b@ha - addi r5,r5,0b@l - subf r5,r5,r6 /* In case we're relocated */ - addis r5,r5,timebase_period_ns@ha - lwz r5,timebase_period_ns@l(r5) - add r4,r4,r5 - addi r4,r4,-1 - divw r4,r4,r5 /* BUS ticks */ -1: mftbu r5 - mftb r6 - mftbu r7 - cmpw 0,r5,r7 - bne 1b /* Get [synced] base time */ - addc r9,r6,r4 /* Compute end time */ - addze r8,r5 -2: mftbu r5 - cmpw 0,r5,r8 - blt 2b - bgt 3f - mftb r6 - cmpw 0,r6,r9 - blt 2b -3: blr |