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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Contains routines needed to support swiotlb for ppc.
*
* Copyright (C) 2009-2010 Freescale Semiconductor, Inc.
* Author: Becky Bruce
*/
#include <linux/memblock.h>
#include <asm/machdep.h>
#include <asm/swiotlb.h>
unsigned int ppc_swiotlb_enable;
void __init swiotlb_detect_4g(void)
{
if ((memblock_end_of_DRAM() - 1) > 0xffffffff)
ppc_swiotlb_enable = 1;
}
static int __init check_swiotlb_enabled(void)
{
if (ppc_swiotlb_enable)
swiotlb_print_info();
else
swiotlb_exit();
return 0;
}
subsys_initcall(check_swiotlb_enabled);
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