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https://github.com/torvalds/linux
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4bf841ebf1
Node ids don't need to be contiguous in Linux, so the concept to use compact node ids to make them contiguous isn't needed at all. This patchset therefore removes it. Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org
56 lines
1.9 KiB
C
56 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* File created by Kanoj Sarcar 06/06/00.
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* Copyright 2000 Silicon Graphics, Inc.
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*/
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#ifndef __ASM_SN_MAPPED_KERNEL_H
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#define __ASM_SN_MAPPED_KERNEL_H
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#include <linux/mmzone.h>
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/*
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* Note on how mapped kernels work: the text and data section is
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* compiled at cksseg segment (LOADADDR = 0xc001c000), and the
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* init/setup/data section gets a 16M virtual address bump in the
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* ld.script file (so that tlblo0 and tlblo1 maps the sections).
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* The vmlinux.64 section addresses are put in the xkseg range
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* using the change-addresses makefile option. Use elfdump -of
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* on IRIX to see where the sections go. The Origin loader loads
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* the two sections contiguously in physical memory. The loader
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* sets the entry point into kernel_entry using a xkphys address,
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* but instead of using 0xa800000001160000, it uses the address
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* 0xa800000000160000, which is where it physically loaded that
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* code. So no jumps can be done before we have switched to using
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* cksseg addresses.
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*/
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#include <asm/addrspace.h>
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#define REP_BASE CAC_BASE
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#ifdef CONFIG_MAPPED_KERNEL
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#define MAPPED_ADDR_RO_TO_PHYS(x) (x - REP_BASE)
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#define MAPPED_ADDR_RW_TO_PHYS(x) (x - REP_BASE - 16777216)
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#define MAPPED_KERN_RO_PHYSBASE(n) (hub_data(n)->kern_vars.kv_ro_baseaddr)
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#define MAPPED_KERN_RW_PHYSBASE(n) (hub_data(n)->kern_vars.kv_rw_baseaddr)
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#define MAPPED_KERN_RO_TO_PHYS(x) \
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((unsigned long)MAPPED_ADDR_RO_TO_PHYS(x) | \
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MAPPED_KERN_RO_PHYSBASE(get_nasid()))
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#define MAPPED_KERN_RW_TO_PHYS(x) \
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((unsigned long)MAPPED_ADDR_RW_TO_PHYS(x) | \
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MAPPED_KERN_RW_PHYSBASE(get_nasid()))
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#else /* CONFIG_MAPPED_KERNEL */
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#define MAPPED_KERN_RO_TO_PHYS(x) (x - REP_BASE)
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#define MAPPED_KERN_RW_TO_PHYS(x) (x - REP_BASE)
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#endif /* CONFIG_MAPPED_KERNEL */
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#define MAPPED_KERN_RO_TO_K0(x) PHYS_TO_K0(MAPPED_KERN_RO_TO_PHYS(x))
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#define MAPPED_KERN_RW_TO_K0(x) PHYS_TO_K0(MAPPED_KERN_RW_TO_PHYS(x))
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#endif /* __ASM_SN_MAPPED_KERNEL_H */
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