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a811c05c16
All we have to do is to enable memblock, the generic FDT code will take care of the rest. Link: http://lkml.kernel.org/r/1533326330-31677-4-git-send-email-rppt@linux.vnet.ibm.com Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Acked-by: Ley Foon Tan <ley.foon.tan@intel.com> Cc: Guan Xuetao <gxt@pku.edu.cn> Cc: Richard Kuo <rkuo@codeaurora.org> Cc: Richard Weinberger <richard@nod.at> Cc: Rob Herring <robh@kernel.org> Cc: Michal Hocko <mhocko@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
57 lines
1.6 KiB
C
57 lines
1.6 KiB
C
/*
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* Device tree support
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*
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* Copyright (C) 2013, 2015 Altera Corporation
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* Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw>
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*
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* Based on MIPS support for CONFIG_OF device tree support
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*
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* Copyright (C) 2010 Cisco Systems Inc. <dediao@cisco.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/bootmem.h>
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#include <linux/of.h>
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#include <linux/of_fdt.h>
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#include <linux/io.h>
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#include <asm/sections.h>
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int __init early_init_dt_reserve_memory_arch(phys_addr_t base, phys_addr_t size,
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bool nomap)
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{
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reserve_bootmem(base, size, BOOTMEM_DEFAULT);
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return 0;
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}
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void __init early_init_devtree(void *params)
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{
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__be32 *dtb = (u32 *)__dtb_start;
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#if defined(CONFIG_NIOS2_DTB_AT_PHYS_ADDR)
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if (be32_to_cpup((__be32 *)CONFIG_NIOS2_DTB_PHYS_ADDR) ==
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OF_DT_HEADER) {
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params = (void *)CONFIG_NIOS2_DTB_PHYS_ADDR;
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early_init_dt_scan(params);
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return;
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}
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#endif
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if (be32_to_cpu((__be32) *dtb) == OF_DT_HEADER)
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params = (void *)__dtb_start;
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early_init_dt_scan(params);
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}
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