1b02ec0180
free_area_init() only requires the definition of maximal PFN for each of the supported zone rater than calculation of actual zone sizes and the sizes of the holes between the zones. After removal of CONFIG_HAVE_MEMBLOCK_NODE_MAP the free_area_init() is available to all architectures. Using this function instead of free_area_init_node() simplifies the zone detection. Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Tested-by: Hoan Tran <hoan@os.amperecomputing.com> [arm64] Cc: Baoquan He <bhe@redhat.com> Cc: Brian Cain <bcain@codeaurora.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Greentime Hu <green.hu@gmail.com> Cc: Greg Ungerer <gerg@linux-m68k.org> Cc: Guan Xuetao <gxt@pku.edu.cn> Cc: Guo Ren <guoren@kernel.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Ley Foon Tan <ley.foon.tan@intel.com> Cc: Mark Salter <msalter@redhat.com> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Simek <monstr@monstr.eu> Cc: Nick Hu <nickhu@andestech.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Richard Weinberger <richard@nod.at> Cc: Rich Felker <dalias@libc.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Stafford Horne <shorne@gmail.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Tony Luck <tony.luck@intel.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Link: http://lkml.kernel.org/r/20200412194859.12663-14-rppt@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
55 lines
1.5 KiB
C
55 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* linux/arch/unicore32/include/mach/memory.h
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*
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* Code specific to PKUnity SoC and UniCore ISA
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*
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* Copyright (C) 2001-2010 GUAN Xue-tao
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*/
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#ifndef __MACH_PUV3_MEMORY_H__
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#define __MACH_PUV3_MEMORY_H__
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#include <mach/hardware.h>
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/* Physical DRAM offset. */
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#define PHYS_OFFSET UL(0x00000000)
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/* The base address of exception vectors. */
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#define VECTORS_BASE UL(0xffff0000)
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/* The base address of kuser area. */
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#define KUSER_BASE UL(0x80000000)
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#ifdef __ASSEMBLY__
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/* The byte offset of the kernel image in RAM from the start of RAM. */
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#define KERNEL_IMAGE_START 0x00408000
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#endif
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#if !defined(__ASSEMBLY__) && defined(CONFIG_PCI)
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void puv3_pci_adjust_zones(unsigned long *max_zone_pfn);
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#define arch_adjust_zones(max_zone_pfn) \
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puv3_pci_adjust_zones(max_zone_pfn)
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#endif
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/*
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* PCI controller in PKUnity-3 masks highest 5-bit for upstream channel,
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* so we must limit the DMA allocation within 128M physical memory for
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* supporting PCI devices.
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*/
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#define PCI_DMA_THRESHOLD (PHYS_OFFSET + SZ_128M - 1)
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#define is_pcibus_device(dev) (dev && \
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(strncmp(dev->bus->name, "pci", 3) == 0))
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#define __virt_to_pcibus(x) (__virt_to_phys((x) + PKUNITY_PCIAHB_BASE))
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#define __pcibus_to_virt(x) (__phys_to_virt(x) - PKUNITY_PCIAHB_BASE)
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/* kuser area */
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#define KUSER_VECPAGE_BASE (KUSER_BASE + UL(0x3fff0000))
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/* kuser_vecpage (0xbfff0000) is ro, and vectors page (0xffff0000) is rw */
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#define kuser_vecpage_to_vectors(x) ((x) - (KUSER_VECPAGE_BASE) \
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+ (VECTORS_BASE))
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#endif
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