upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
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u-boot/arch/powerpc/lib/ppccache.S

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/*
* Copyright (C) 1998 Dan Malek <dmalek@jlc.net>
* Copyright (C) 1999 Magnus Damm <kieraypc01.p.y.kie.era.ericsson.se>
* Copyright (C) 2000, 2001,2002 Wolfgang Denk <wd@denx.de>
* Copyright Freescale Semiconductor, Inc. 2004, 2006.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <config.h>
#include <ppc_asm.tmpl>
/*------------------------------------------------------------------------------- */
/* Function: ppcDcbf */
/* Description: Data Cache block flush */
/* Input: r3 = effective address */
/* Output: none. */
/*------------------------------------------------------------------------------- */
.globl ppcDcbf
ppcDcbf:
dcbf r0,r3
blr
/*------------------------------------------------------------------------------- */
/* Function: ppcDcbi */
/* Description: Data Cache block Invalidate */
/* Input: r3 = effective address */
/* Output: none. */
/*------------------------------------------------------------------------------- */
.globl ppcDcbi
ppcDcbi:
dcbi r0,r3
blr
/*--------------------------------------------------------------------------
* Function: ppcDcbz
* Description: Data Cache block zero.
* Input: r3 = effective address
* Output: none.
*-------------------------------------------------------------------------- */
.globl ppcDcbz
ppcDcbz:
dcbz r0,r3
blr
/*------------------------------------------------------------------------------- */
/* Function: ppcSync */
/* Description: Processor Synchronize */
/* Input: none. */
/* Output: none. */
/*------------------------------------------------------------------------------- */
.globl ppcSync
ppcSync:
sync
blr