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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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44a4ef59d5
While the GCC and Clang compilers already define __ASSEMBLER__ automatically when compiling assembly code, __ASSEMBLY__ is a macro that only gets defined by the Makefiles in the kernel. This can be very confusing when switching between userspace and kernelspace coding, or when dealing with uapi headers that rather should use __ASSEMBLER__ instead. So let's standardize on the __ASSEMBLER__ macro that is provided by the compilers now. This is a completely mechanical patch (done with a simple "sed -i" statement). Cc: Chris Zankel <chris@zankel.net> Cc: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Thomas Huth <thuth@redhat.com> Message-Id: <20250314071013.1575167-40-thuth@redhat.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
105 lines
2.7 KiB
C
105 lines
2.7 KiB
C
/*
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* Kernel virtual memory layout definitions.
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*
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* This file is subject to the terms and conditions of the GNU General
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* Public License. See the file "COPYING" in the main directory of
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* this archive for more details.
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*
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* Copyright (C) 2016 Cadence Design Systems Inc.
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*/
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#ifndef _XTENSA_KMEM_LAYOUT_H
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#define _XTENSA_KMEM_LAYOUT_H
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#include <asm/core.h>
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#include <asm/types.h>
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#ifdef CONFIG_MMU
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/*
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* Fixed TLB translations in the processor.
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*/
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#define XCHAL_PAGE_TABLE_VADDR __XTENSA_UL_CONST(0x80000000)
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#define XCHAL_PAGE_TABLE_SIZE __XTENSA_UL_CONST(0x00400000)
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#if defined(CONFIG_XTENSA_KSEG_MMU_V2)
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#define XCHAL_KSEG_CACHED_VADDR __XTENSA_UL_CONST(0xd0000000)
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#define XCHAL_KSEG_BYPASS_VADDR __XTENSA_UL_CONST(0xd8000000)
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#define XCHAL_KSEG_SIZE __XTENSA_UL_CONST(0x08000000)
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#define XCHAL_KSEG_ALIGNMENT __XTENSA_UL_CONST(0x08000000)
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#define XCHAL_KSEG_TLB_WAY 5
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#define XCHAL_KIO_TLB_WAY 6
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#elif defined(CONFIG_XTENSA_KSEG_256M)
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#define XCHAL_KSEG_CACHED_VADDR __XTENSA_UL_CONST(0xb0000000)
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#define XCHAL_KSEG_BYPASS_VADDR __XTENSA_UL_CONST(0xc0000000)
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#define XCHAL_KSEG_SIZE __XTENSA_UL_CONST(0x10000000)
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#define XCHAL_KSEG_ALIGNMENT __XTENSA_UL_CONST(0x10000000)
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#define XCHAL_KSEG_TLB_WAY 6
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#define XCHAL_KIO_TLB_WAY 6
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#elif defined(CONFIG_XTENSA_KSEG_512M)
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#define XCHAL_KSEG_CACHED_VADDR __XTENSA_UL_CONST(0xa0000000)
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#define XCHAL_KSEG_BYPASS_VADDR __XTENSA_UL_CONST(0xc0000000)
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#define XCHAL_KSEG_SIZE __XTENSA_UL_CONST(0x20000000)
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#define XCHAL_KSEG_ALIGNMENT __XTENSA_UL_CONST(0x10000000)
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#define XCHAL_KSEG_TLB_WAY 6
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#define XCHAL_KIO_TLB_WAY 6
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#else
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#error Unsupported KSEG configuration
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#endif
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#ifdef CONFIG_KSEG_PADDR
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#define XCHAL_KSEG_PADDR __XTENSA_UL_CONST(CONFIG_KSEG_PADDR)
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#else
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#define XCHAL_KSEG_PADDR __XTENSA_UL_CONST(0x00000000)
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#endif
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#if XCHAL_KSEG_PADDR & (XCHAL_KSEG_ALIGNMENT - 1)
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#error XCHAL_KSEG_PADDR is not properly aligned to XCHAL_KSEG_ALIGNMENT
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#endif
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#endif
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/* KIO definition */
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#if XCHAL_HAVE_PTP_MMU
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#define XCHAL_KIO_CACHED_VADDR 0xe0000000
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#define XCHAL_KIO_BYPASS_VADDR 0xf0000000
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#define XCHAL_KIO_DEFAULT_PADDR 0xf0000000
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#else
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#define XCHAL_KIO_BYPASS_VADDR XCHAL_KIO_PADDR
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#define XCHAL_KIO_DEFAULT_PADDR 0x90000000
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#endif
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#define XCHAL_KIO_SIZE 0x10000000
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#if (!XCHAL_HAVE_PTP_MMU || XCHAL_HAVE_SPANNING_WAY) && defined(CONFIG_USE_OF)
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#define XCHAL_KIO_PADDR xtensa_get_kio_paddr()
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#ifndef __ASSEMBLER__
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extern unsigned long xtensa_kio_paddr;
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static inline unsigned long xtensa_get_kio_paddr(void)
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{
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return xtensa_kio_paddr;
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}
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#endif
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#else
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#define XCHAL_KIO_PADDR XCHAL_KIO_DEFAULT_PADDR
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#endif
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/* KERNEL_STACK definition */
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#ifndef CONFIG_KASAN
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#define KERNEL_STACK_SHIFT 13
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#else
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#define KERNEL_STACK_SHIFT 15
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#endif
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#define KERNEL_STACK_SIZE (1 << KERNEL_STACK_SHIFT)
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#endif
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