2011-06-04 12:56:16 -06:00
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/*
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* OpenRISC prom.c
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*
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* Linux architectural port borrowing liberally from similar works of
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* others. All original copyrights apply as per the original source
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* declaration.
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*
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* Modifications for the OpenRISC architecture:
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* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* Architecture specific procedures for creating, accessing and
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* interpreting the device tree.
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*
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*/
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#include <stdarg.h>
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/init.h>
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#include <linux/threads.h>
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#include <linux/spinlock.h>
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#include <linux/types.h>
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#include <linux/pci.h>
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#include <linux/stringify.h>
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#include <linux/delay.h>
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#include <linux/initrd.h>
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#include <linux/bitops.h>
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#include <linux/module.h>
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#include <linux/kexec.h>
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#include <linux/debugfs.h>
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#include <linux/irq.h>
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#include <linux/memblock.h>
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#include <linux/of_fdt.h>
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#include <asm/prom.h>
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#include <asm/page.h>
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#include <asm/processor.h>
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#include <asm/irq.h>
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#include <linux/io.h>
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#include <asm/mmu.h>
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#include <asm/pgtable.h>
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#include <asm/sections.h>
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#include <asm/setup.h>
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void __init early_init_dt_add_memory_arch(u64 base, u64 size)
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{
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size &= PAGE_MASK;
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memblock_add(base, size);
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}
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void __init early_init_devtree(void *params)
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{
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/* Setup flat device-tree pointer */
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initial_boot_params = params;
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/* Retrieve various informations from the /chosen node of the
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* device-tree, including the platform type, initrd location and
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* size, TCE reserve, and more ...
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*/
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2013-08-26 10:28:50 -06:00
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of_scan_flat_dt(early_init_dt_scan_chosen, boot_command_line);
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2011-06-04 12:56:16 -06:00
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/* Scan memory nodes and rebuild MEMBLOCKs */
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of_scan_flat_dt(early_init_dt_scan_root, NULL);
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of_scan_flat_dt(early_init_dt_scan_memory, NULL);
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2011-12-08 11:22:08 -07:00
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memblock_allow_resize();
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2011-06-04 12:56:16 -06:00
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}
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#ifdef CONFIG_BLK_DEV_INITRD
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2013-07-01 12:20:35 -06:00
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void __init early_init_dt_setup_initrd_arch(u64 start, u64 end)
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2011-06-04 12:56:16 -06:00
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{
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initrd_start = (unsigned long)__va(start);
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initrd_end = (unsigned long)__va(end);
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initrd_below_start_ok = 1;
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}
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#endif
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