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/drivers/spi/spi.c

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/*
* Copyright (c) 2011 The Chromium OS Authors.
*
* 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 <common.h>
#include <malloc.h>
#include <spi.h>
void *spi_do_alloc_slave(int offset, int size, unsigned int bus,
unsigned int cs)
{
struct spi_slave *slave;
void *ptr;
ptr = malloc(size);
if (ptr) {
memset(ptr, '\0', size);
slave = (struct spi_slave *)(ptr + offset);
slave->bus = bus;
slave->cs = cs;
}
return ptr;
}