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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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3486892f99
Use the common unflatten_and_copy_device_tree to copy the built-in FDT out of init section. This moves the copy later in the boot, but there do not appear to be any references to strings in the FDT before the copy. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Cc: Jonas Bonn <jonas@southpole.se> Cc: linux@lists.openrisc.net
83 lines
2.2 KiB
C
83 lines
2.2 KiB
C
/*
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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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of_scan_flat_dt(early_init_dt_scan_chosen, boot_command_line);
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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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memblock_allow_resize();
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}
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#ifdef CONFIG_BLK_DEV_INITRD
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void __init early_init_dt_setup_initrd_arch(u64 start, u64 end)
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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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