ARM updates for 5.5-rc:
- improve ARM implementation of pfn_valid() - various sparse fixes - spelling fixes - add further ARMv8 debug architecture versions - clang fix for decompressor - update to generic vDSO - remove Brahma-B53 from spectre hardening - initialise broadcast hrtimer device - use correct nm executable in decompressor - remove old mcount et.al. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEuNNh8scc2k/wOAE+9OeQG+StrGQFAl3frmsACgkQ9OeQG+St rGQbEQ//beELau57BFqbfV6FAo2nJ5S8t/w35VYPlOIwz6Y20ilJfAvHlBcX24N6 JSKGiQEQyoj7WBpypp6FnAOe161WxWl4tIS4saOxQjrCCFEZrY2ZeOl4tsFE4U7b abDiw7RmAk4sKW8JPSAhGcQkWvSdmk+SqQrKwgnLVvPv96DffF9U+W688yvEHyBN KnMG0JKXs6cZeq1jXpJLxrbX9jBU5ZNkaDy8U17MGpSrdhcFVpaDUtNVfmhxsFnr TuQWs9bRlDq77J7j//ojXU9IsvICTV3hedqJj3LmlhBlrbRFojROo2a/LSyfFT+u Hj1wV0OhaasLxKD0nqkn+kRMty0UZz+4mIgGfc+3xE9TaCRbDUbRt+czSqRvBNZR zh+ikwoBLTyKBRBmEBkCN66G+2dk5MC9MSsC/ZdW/8Y57mJ4DnjtCLfKOJEzFkgy zvlf3sWqcoRhLe4c6urB3LrWCoYqotdoV7zu3Obq8jccKCg802lfNtT2kGvaHiHj XFcm8mB26qAdhZAP3+D3C8CcY2LPJl7ERf51SQA6sowBw0BjDvJRd0ZU3pUQvGHY fribGwOVI51wGTCuBAMsvA3OwDTQUetk3bIItgIf+4PJ81MiDe72kMoG5M8uWjgG SUiKif8In5YNBgWwfD4S5shrmdCAaYGGRS15CY4rejwW9Eq/eLY= =67Db -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm Pull ARM updates from Russell King: - improve ARM implementation of pfn_valid() - various sparse fixes - spelling fixes - add further ARMv8 debug architecture versions - clang fix for decompressor - update to generic vDSO - remove Brahma-B53 from spectre hardening - initialise broadcast hrtimer device - use correct nm executable in decompressor - remove old mcount et.al. * tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: (26 commits) ARM: 8940/1: ftrace: remove mcount(),ftrace_caller_old() and ftrace_call_old() ARM: 8939/1: kbuild: use correct nm executable ARM: 8938/1: kernel: initialize broadcast hrtimer based clock event device ARM: 8937/1: spectre-v2: remove Brahma-B53 from hardening ARM: 8933/1: replace Sun/Solaris style flag on section directive ARM: 8932/1: Add clock_gettime64 entry point ARM: 8931/1: Add clock_getres entry point ARM: 8930/1: Add support for generic vDSO ARM: 8929/1: use APSR_nzcv instead of r15 as mrc operand ARM: 8927/1: ARM/hw_breakpoint: add more ARMv8 debug architecture versions support ARM: 8918/2: only build return_address() if needed ARM: 8928/1: ARM_ERRATA_775420: Spelling s/date/data/ ARM: 8925/1: tcm: include <asm/tcm.h> for missing declarations ARM: 8924/1: tcm: make dtcm_end and itcm_end static ARM: 8923/1: mm: include <asm/vga.h> for vga_base ARM: 8922/1: parse_dt_topology() rate is pointer to __be32 ARM: 8920/1: share get_signal_page from signal.c to process.c ARM: 8919/1: make unexported functions static ARM: 8917/1: mm: include <asm/set_memory.h> ARM: 8916/1: mm: make set_section_perms() static ...alistair/sunxi64-5.5-dsi
Linus Torvalds
commit
9dd0013824
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|
@ -1018,7 +1018,7 @@ config ARM_ERRATA_775420
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depends on CPU_V7
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help
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This option enables the workaround for the 775420 Cortex-A9 (r2p2,
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r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
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r2p6,r2p8,r2p10,r3p0) erratum. In case a data cache maintenance
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operation aborts with MMU exception, it might cause the processor
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to deadlock. This workaround puts DSB before executing ISB if
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an abort may occur on cache maintenance.
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|
|
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@ -13,7 +13,7 @@
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* size immediately following the kernel, we could build this into
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* a binary blob, and concatenate the zImage using the cat command.
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*/
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.section .start,#alloc,#execinstr
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.section .start, "ax"
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.type _start, #function
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.globl _start
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@ -121,7 +121,7 @@ ccflags-y := -fpic $(call cc-option,-mno-single-pic-base,) -fno-builtin -I$(obj)
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asflags-y := -DZIMAGE
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# Supply kernel BSS size to the decompressor via a linker symbol.
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KBSS_SZ = $(shell echo $$(($$($(CROSS_COMPILE)nm $(obj)/../../../../vmlinux | \
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KBSS_SZ = $(shell echo $$(($$($(NM) $(obj)/../../../../vmlinux | \
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sed -n -e 's/^\([^ ]*\) [AB] __bss_start$$/-0x\1/p' \
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-e 's/^\([^ ]*\) [AB] __bss_stop$$/+0x\1/p') )) )
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LDFLAGS_vmlinux = --defsym _kernel_bss_size=$(KBSS_SZ)
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@ -165,7 +165,7 @@ $(obj)/bswapsdi2.S: $(srctree)/arch/$(SRCARCH)/lib/bswapsdi2.S
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# The .data section is already discarded by the linker script so no need
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# to bother about it here.
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check_for_bad_syms = \
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bad_syms=$$($(CROSS_COMPILE)nm $@ | sed -n 's/^.\{8\} [bc] \(.*\)/\1/p') && \
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bad_syms=$$($(NM) $@ | sed -n 's/^.\{8\} [bc] \(.*\)/\1/p') && \
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[ -z "$$bad_syms" ] || \
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( echo "following symbols must have non local/private scope:" >&2; \
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echo "$$bad_syms" >&2; false )
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@ -19,7 +19,7 @@ static int node_offset(void *fdt, const char *node_path)
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}
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static int setprop(void *fdt, const char *node_path, const char *property,
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uint32_t *val_array, int size)
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void *val_array, int size)
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{
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int offset = node_offset(fdt, node_path);
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if (offset < 0)
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@ -60,7 +60,7 @@ static uint32_t get_cell_size(const void *fdt)
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{
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int len;
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uint32_t cell_size = 1;
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const uint32_t *size_len = getprop(fdt, "/", "#size-cells", &len);
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const __be32 *size_len = getprop(fdt, "/", "#size-cells", &len);
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if (size_len)
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cell_size = fdt32_to_cpu(*size_len);
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@ -129,7 +129,7 @@ int atags_to_fdt(void *atag_list, void *fdt, int total_space)
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struct tag *atag = atag_list;
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/* In the case of 64 bits memory size, need to reserve 2 cells for
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* address and size for each bank */
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uint32_t mem_reg_property[2 * 2 * NR_BANKS];
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__be32 mem_reg_property[2 * 2 * NR_BANKS];
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int memcount = 0;
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int ret, memsize;
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@ -138,7 +138,7 @@ int atags_to_fdt(void *atag_list, void *fdt, int total_space)
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return 1;
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/* if we get a DTB here we're done already */
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if (*(u32 *)atag_list == fdt32_to_cpu(FDT_MAGIC))
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if (*(__be32 *)atag_list == cpu_to_fdt32(FDT_MAGIC))
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return 0;
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/* validate the ATAG */
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@ -177,8 +177,8 @@ int atags_to_fdt(void *atag_list, void *fdt, int total_space)
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/* if memsize is 2, that means that
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* each data needs 2 cells of 32 bits,
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* so the data are 64 bits */
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uint64_t *mem_reg_prop64 =
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(uint64_t *)mem_reg_property;
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__be64 *mem_reg_prop64 =
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(__be64 *)mem_reg_property;
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mem_reg_prop64[memcount++] =
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cpu_to_fdt64(atag->u.mem.start);
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mem_reg_prop64[memcount++] =
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@ -6,7 +6,7 @@
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* Author: Nicolas Pitre
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*/
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.section ".start", #alloc, #execinstr
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.section ".start", "ax"
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mrc p15, 0, r0, c1, c0, 0 @ read control reg
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orr r0, r0, #(1 << 7) @ enable big endian mode
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@ -140,7 +140,7 @@
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#endif
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.endm
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.section ".start", #alloc, #execinstr
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.section ".start", "ax"
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/*
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* sort out different calling conventions
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*/
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@ -1273,7 +1273,7 @@ iflush:
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__armv5tej_mmu_cache_flush:
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tst r4, #1
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movne pc, lr
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1: mrc p15, 0, r15, c7, c14, 3 @ test,clean,invalidate D cache
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1: mrc p15, 0, APSR_nzcv, c7, c14, 3 @ test,clean,invalidate D cache
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bne 1b
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mcr p15, 0, r0, c7, c5, 0 @ flush I cache
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mcr p15, 0, r0, c7, c10, 4 @ drain WB
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@ -1,5 +1,5 @@
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/* SPDX-License-Identifier: GPL-2.0 */
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.section .piggydata,#alloc
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.section .piggydata, "a"
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.globl input_data
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input_data:
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.incbin "arch/arm/boot/compressed/piggy_data"
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@ -11,7 +11,6 @@
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#define MCOUNT_INSN_SIZE 4 /* sizeof mcount call */
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#ifndef __ASSEMBLY__
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extern void mcount(void);
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extern void __gnu_mcount_nc(void);
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#ifdef CONFIG_DYNAMIC_FTRACE
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@ -23,9 +22,6 @@ static inline unsigned long ftrace_call_adjust(unsigned long addr)
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/* With Thumb-2, the recorded addresses have the lsb set */
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return addr & ~1;
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}
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extern void ftrace_caller_old(void);
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extern void ftrace_call_old(void);
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#endif
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#endif
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@ -53,6 +53,9 @@ static inline void decode_ctrl_reg(u32 reg,
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#define ARM_DEBUG_ARCH_V7_MM 4
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#define ARM_DEBUG_ARCH_V7_1 5
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#define ARM_DEBUG_ARCH_V8 6
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#define ARM_DEBUG_ARCH_V8_1 7
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#define ARM_DEBUG_ARCH_V8_2 8
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#define ARM_DEBUG_ARCH_V8_4 9
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/* Breakpoint */
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#define ARM_BREAKPOINT_EXECUTE 0
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@ -27,5 +27,7 @@ static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
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return channel ? 15 : 14;
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}
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extern void pcibios_report_status(unsigned int status_mask, int warn);
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#endif /* __KERNEL__ */
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#endif
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@ -0,0 +1,94 @@
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/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2018 ARM Limited
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*/
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#ifndef __ASM_VDSO_GETTIMEOFDAY_H
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#define __ASM_VDSO_GETTIMEOFDAY_H
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#ifndef __ASSEMBLY__
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#include <asm/barrier.h>
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#include <asm/cp15.h>
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#include <asm/unistd.h>
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#include <uapi/linux/time.h>
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#define VDSO_HAS_CLOCK_GETRES 1
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extern struct vdso_data *__get_datapage(void);
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static __always_inline int gettimeofday_fallback(
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struct __kernel_old_timeval *_tv,
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struct timezone *_tz)
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{
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register struct timezone *tz asm("r1") = _tz;
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register struct __kernel_old_timeval *tv asm("r0") = _tv;
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register long ret asm ("r0");
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register long nr asm("r7") = __NR_gettimeofday;
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asm volatile(
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" swi #0\n"
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: "=r" (ret)
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: "r" (tv), "r" (tz), "r" (nr)
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: "memory");
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return ret;
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}
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static __always_inline long clock_gettime_fallback(
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clockid_t _clkid,
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struct __kernel_timespec *_ts)
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{
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register struct __kernel_timespec *ts asm("r1") = _ts;
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register clockid_t clkid asm("r0") = _clkid;
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register long ret asm ("r0");
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register long nr asm("r7") = __NR_clock_gettime64;
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asm volatile(
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" swi #0\n"
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: "=r" (ret)
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: "r" (clkid), "r" (ts), "r" (nr)
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: "memory");
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return ret;
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}
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static __always_inline int clock_getres_fallback(
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clockid_t _clkid,
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struct __kernel_timespec *_ts)
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{
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register struct __kernel_timespec *ts asm("r1") = _ts;
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register clockid_t clkid asm("r0") = _clkid;
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register long ret asm ("r0");
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register long nr asm("r7") = __NR_clock_getres_time64;
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asm volatile(
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" swi #0\n"
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: "=r" (ret)
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: "r" (clkid), "r" (ts), "r" (nr)
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: "memory");
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return ret;
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}
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static __always_inline u64 __arch_get_hw_counter(int clock_mode)
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{
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#ifdef CONFIG_ARM_ARCH_TIMER
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u64 cycle_now;
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isb();
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cycle_now = read_sysreg(CNTVCT);
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return cycle_now;
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#else
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return -EINVAL; /* use fallback */
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#endif
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}
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static __always_inline const struct vdso_data *__arch_get_vdso_data(void)
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{
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return __get_datapage();
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}
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#endif /* !__ASSEMBLY__ */
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#endif /* __ASM_VDSO_GETTIMEOFDAY_H */
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@ -0,0 +1,71 @@
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_VDSO_VSYSCALL_H
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#define __ASM_VDSO_VSYSCALL_H
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#ifndef __ASSEMBLY__
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#include <linux/timekeeper_internal.h>
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#include <vdso/datapage.h>
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#include <asm/cacheflush.h>
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extern struct vdso_data *vdso_data;
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extern bool cntvct_ok;
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static __always_inline
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bool tk_is_cntvct(const struct timekeeper *tk)
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{
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if (!IS_ENABLED(CONFIG_ARM_ARCH_TIMER))
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return false;
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if (!tk->tkr_mono.clock->archdata.vdso_direct)
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return false;
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return true;
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}
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|
||||
/*
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* Update the vDSO data page to keep in sync with kernel timekeeping.
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*/
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||||
static __always_inline
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struct vdso_data *__arm_get_k_vdso_data(void)
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{
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return vdso_data;
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}
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#define __arch_get_k_vdso_data __arm_get_k_vdso_data
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||||
static __always_inline
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int __arm_update_vdso_data(void)
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||||
{
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||||
return !cntvct_ok;
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||||
}
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#define __arch_update_vdso_data __arm_update_vdso_data
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||||
|
||||
static __always_inline
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int __arm_get_clock_mode(struct timekeeper *tk)
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{
|
||||
u32 __tk_is_cntvct = tk_is_cntvct(tk);
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|
||||
return __tk_is_cntvct;
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||||
}
|
||||
#define __arch_get_clock_mode __arm_get_clock_mode
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||||
|
||||
static __always_inline
|
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int __arm_use_vsyscall(struct vdso_data *vdata)
|
||||
{
|
||||
return vdata[CS_HRES_COARSE].clock_mode;
|
||||
}
|
||||
#define __arch_use_vsyscall __arm_use_vsyscall
|
||||
|
||||
static __always_inline
|
||||
void __arm_sync_vdso_data(struct vdso_data *vdata)
|
||||
{
|
||||
flush_dcache_page(virt_to_page(vdata));
|
||||
}
|
||||
#define __arch_sync_vdso_data __arm_sync_vdso_data
|
||||
|
||||
/* The asm-generic header needs to be included after the definitions above */
|
||||
#include <asm-generic/vdso/vsyscall.h>
|
||||
|
||||
#endif /* !__ASSEMBLY__ */
|
||||
|
||||
#endif /* __ASM_VDSO_VSYSCALL_H */
|
||||
|
|
@ -11,35 +11,12 @@
|
|||
|
||||
#ifndef __ASSEMBLY__
|
||||
|
||||
#include <vdso/datapage.h>
|
||||
#include <asm/page.h>
|
||||
|
||||
/* Try to be cache-friendly on systems that don't implement the
|
||||
* generic timer: fit the unconditionally updated fields in the first
|
||||
* 32 bytes.
|
||||
*/
|
||||
struct vdso_data {
|
||||
u32 seq_count; /* sequence count - odd during updates */
|
||||
u16 tk_is_cntvct; /* fall back to syscall if false */
|
||||
u16 cs_shift; /* clocksource shift */
|
||||
u32 xtime_coarse_sec; /* coarse time */
|
||||
u32 xtime_coarse_nsec;
|
||||
|
||||
u32 wtm_clock_sec; /* wall to monotonic offset */
|
||||
u32 wtm_clock_nsec;
|
||||
u32 xtime_clock_sec; /* CLOCK_REALTIME - seconds */
|
||||
u32 cs_mult; /* clocksource multiplier */
|
||||
|
||||
u64 cs_cycle_last; /* last cycle value */
|
||||
u64 cs_mask; /* clocksource mask */
|
||||
|
||||
u64 xtime_clock_snsec; /* CLOCK_REALTIME sub-ns base */
|
||||
u32 tz_minuteswest; /* timezone info for gettimeofday(2) */
|
||||
u32 tz_dsttime;
|
||||
};
|
||||
|
||||
union vdso_data_store {
|
||||
struct vdso_data data;
|
||||
u8 page[PAGE_SIZE];
|
||||
struct vdso_data data[CS_BASES];
|
||||
u8 page[PAGE_SIZE];
|
||||
};
|
||||
|
||||
#endif /* !__ASSEMBLY__ */
|
||||
|
|
|
|||
|
|
@ -17,10 +17,14 @@ CFLAGS_REMOVE_return_address.o = -pg
|
|||
# Object file lists.
|
||||
|
||||
obj-y := elf.o entry-common.o irq.o opcodes.o \
|
||||
process.o ptrace.o reboot.o return_address.o \
|
||||
process.o ptrace.o reboot.o \
|
||||
setup.o signal.o sigreturn_codes.o \
|
||||
stacktrace.o sys_arm.o time.o traps.o
|
||||
|
||||
ifneq ($(CONFIG_ARM_UNWIND),y)
|
||||
obj-$(CONFIG_FRAME_POINTER) += return_address.o
|
||||
endif
|
||||
|
||||
obj-$(CONFIG_ATAGS) += atags_parse.o
|
||||
obj-$(CONFIG_ATAGS_PROC) += atags_proc.o
|
||||
obj-$(CONFIG_DEPRECATED_PARAM_STRUCT) += atags_compat.o
|
||||
|
|
|
|||
|
|
@ -10,6 +10,7 @@
|
|||
#include <linux/errno.h>
|
||||
|
||||
#include <asm/delay.h>
|
||||
#include <asm/arch_timer.h>
|
||||
|
||||
#include <clocksource/arm_arch_timer.h>
|
||||
|
||||
|
|
|
|||
|
|
@ -246,6 +246,9 @@ static int enable_monitor_mode(void)
|
|||
case ARM_DEBUG_ARCH_V7_ECP14:
|
||||
case ARM_DEBUG_ARCH_V7_1:
|
||||
case ARM_DEBUG_ARCH_V8:
|
||||
case ARM_DEBUG_ARCH_V8_1:
|
||||
case ARM_DEBUG_ARCH_V8_2:
|
||||
case ARM_DEBUG_ARCH_V8_4:
|
||||
ARM_DBG_WRITE(c0, c2, 2, (dscr | ARM_DSCR_MDBGEN));
|
||||
isb();
|
||||
break;
|
||||
|
|
|
|||
|
|
@ -7,6 +7,7 @@
|
|||
#include <linux/kernel.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/sort.h>
|
||||
#include <linux/moduleloader.h>
|
||||
|
||||
#include <asm/cache.h>
|
||||
#include <asm/opcodes.h>
|
||||
|
|
|
|||
|
|
@ -36,6 +36,8 @@
|
|||
#include <asm/tls.h>
|
||||
#include <asm/vdso.h>
|
||||
|
||||
#include "signal.h"
|
||||
|
||||
#if defined(CONFIG_STACKPROTECTOR) && !defined(CONFIG_STACKPROTECTOR_PER_TASK)
|
||||
#include <linux/stackprotector.h>
|
||||
unsigned long __stack_chk_guard __read_mostly;
|
||||
|
|
|
|||
|
|
@ -51,7 +51,7 @@ static int psci_boot_secondary(unsigned int cpu, struct task_struct *idle)
|
|||
}
|
||||
|
||||
#ifdef CONFIG_HOTPLUG_CPU
|
||||
int psci_cpu_disable(unsigned int cpu)
|
||||
static int psci_cpu_disable(unsigned int cpu)
|
||||
{
|
||||
/* Fail early if we don't have CPU_OFF support */
|
||||
if (!psci_ops.cpu_off)
|
||||
|
|
@ -64,7 +64,7 @@ int psci_cpu_disable(unsigned int cpu)
|
|||
return 0;
|
||||
}
|
||||
|
||||
void psci_cpu_die(unsigned int cpu)
|
||||
static void psci_cpu_die(unsigned int cpu)
|
||||
{
|
||||
u32 state = PSCI_POWER_STATE_TYPE_POWER_DOWN <<
|
||||
PSCI_0_2_POWER_STATE_TYPE_SHIFT;
|
||||
|
|
@ -76,7 +76,7 @@ void psci_cpu_die(unsigned int cpu)
|
|||
panic("psci: cpu %d failed to shutdown\n", cpu);
|
||||
}
|
||||
|
||||
int psci_cpu_kill(unsigned int cpu)
|
||||
static int psci_cpu_kill(unsigned int cpu)
|
||||
{
|
||||
int err, i;
|
||||
|
||||
|
|
|
|||
|
|
@ -7,8 +7,6 @@
|
|||
*/
|
||||
#include <linux/export.h>
|
||||
#include <linux/ftrace.h>
|
||||
|
||||
#if defined(CONFIG_FRAME_POINTER) && !defined(CONFIG_ARM_UNWIND)
|
||||
#include <linux/sched.h>
|
||||
|
||||
#include <asm/stacktrace.h>
|
||||
|
|
@ -53,6 +51,4 @@ void *return_address(unsigned int level)
|
|||
return NULL;
|
||||
}
|
||||
|
||||
#endif /* if defined(CONFIG_FRAME_POINTER) && !defined(CONFIG_ARM_UNWIND) */
|
||||
|
||||
EXPORT_SYMBOL_GPL(return_address);
|
||||
|
|
|
|||
|
|
@ -9,3 +9,5 @@ struct rt_sigframe {
|
|||
struct siginfo info;
|
||||
struct sigframe sig;
|
||||
};
|
||||
|
||||
extern struct page *get_signal_page(void);
|
||||
|
|
|
|||
|
|
@ -18,6 +18,7 @@
|
|||
#include <asm/memory.h>
|
||||
#include <asm/system_info.h>
|
||||
#include <asm/traps.h>
|
||||
#include <asm/tcm.h>
|
||||
|
||||
#define TCMTR_FORMAT_MASK 0xe0000000U
|
||||
|
||||
|
|
@ -30,8 +31,8 @@ extern char __itcm_start, __sitcm_text, __eitcm_text;
|
|||
extern char __dtcm_start, __sdtcm_data, __edtcm_data;
|
||||
|
||||
/* These will be increased as we run */
|
||||
u32 dtcm_end = DTCM_OFFSET;
|
||||
u32 itcm_end = ITCM_OFFSET;
|
||||
static u32 dtcm_end = DTCM_OFFSET;
|
||||
static u32 itcm_end = ITCM_OFFSET;
|
||||
|
||||
/*
|
||||
* TCM memory resources
|
||||
|
|
|
|||
|
|
@ -9,6 +9,7 @@
|
|||
* reading the RTC at bootup, etc...
|
||||
*/
|
||||
#include <linux/clk-provider.h>
|
||||
#include <linux/clockchips.h>
|
||||
#include <linux/clocksource.h>
|
||||
#include <linux/errno.h>
|
||||
#include <linux/export.h>
|
||||
|
|
@ -107,5 +108,6 @@ void __init time_init(void)
|
|||
of_clk_init(NULL);
|
||||
#endif
|
||||
timer_probe();
|
||||
tick_setup_hrtimer_broadcast();
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -95,7 +95,7 @@ static void __init parse_dt_topology(void)
|
|||
GFP_NOWAIT);
|
||||
|
||||
for_each_possible_cpu(cpu) {
|
||||
const u32 *rate;
|
||||
const __be32 *rate;
|
||||
int len;
|
||||
|
||||
/* too early to use cpu->of_node */
|
||||
|
|
|
|||
|
|
@ -23,6 +23,8 @@
|
|||
#include <asm/vdso.h>
|
||||
#include <asm/vdso_datapage.h>
|
||||
#include <clocksource/arm_arch_timer.h>
|
||||
#include <vdso/helpers.h>
|
||||
#include <vdso/vsyscall.h>
|
||||
|
||||
#define MAX_SYMNAME 64
|
||||
|
||||
|
|
@ -37,7 +39,7 @@ unsigned int vdso_total_pages __ro_after_init;
|
|||
* The VDSO data page.
|
||||
*/
|
||||
static union vdso_data_store vdso_data_store __page_aligned_data;
|
||||
static struct vdso_data *vdso_data = &vdso_data_store.data;
|
||||
struct vdso_data *vdso_data = vdso_data_store.data;
|
||||
|
||||
static struct page *vdso_data_page __ro_after_init;
|
||||
static const struct vm_special_mapping vdso_data_mapping = {
|
||||
|
|
@ -77,7 +79,7 @@ struct elfinfo {
|
|||
/* Cached result of boot-time check for whether the arch timer exists,
|
||||
* and if so, whether the virtual counter is useable.
|
||||
*/
|
||||
static bool cntvct_ok __ro_after_init;
|
||||
bool cntvct_ok __ro_after_init;
|
||||
|
||||
static bool __init cntvct_functional(void)
|
||||
{
|
||||
|
|
@ -262,84 +264,3 @@ void arm_install_vdso(struct mm_struct *mm, unsigned long addr)
|
|||
mm->context.vdso = addr;
|
||||
}
|
||||
|
||||
static void vdso_write_begin(struct vdso_data *vdata)
|
||||
{
|
||||
++vdso_data->seq_count;
|
||||
smp_wmb(); /* Pairs with smp_rmb in vdso_read_retry */
|
||||
}
|
||||
|
||||
static void vdso_write_end(struct vdso_data *vdata)
|
||||
{
|
||||
smp_wmb(); /* Pairs with smp_rmb in vdso_read_begin */
|
||||
++vdso_data->seq_count;
|
||||
}
|
||||
|
||||
static bool tk_is_cntvct(const struct timekeeper *tk)
|
||||
{
|
||||
if (!IS_ENABLED(CONFIG_ARM_ARCH_TIMER))
|
||||
return false;
|
||||
|
||||
if (!tk->tkr_mono.clock->archdata.vdso_direct)
|
||||
return false;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* update_vsyscall - update the vdso data page
|
||||
*
|
||||
* Increment the sequence counter, making it odd, indicating to
|
||||
* userspace that an update is in progress. Update the fields used
|
||||
* for coarse clocks and, if the architected system timer is in use,
|
||||
* the fields used for high precision clocks. Increment the sequence
|
||||
* counter again, making it even, indicating to userspace that the
|
||||
* update is finished.
|
||||
*
|
||||
* Userspace is expected to sample seq_count before reading any other
|
||||
* fields from the data page. If seq_count is odd, userspace is
|
||||
* expected to wait until it becomes even. After copying data from
|
||||
* the page, userspace must sample seq_count again; if it has changed
|
||||
* from its previous value, userspace must retry the whole sequence.
|
||||
*
|
||||
* Calls to update_vsyscall are serialized by the timekeeping core.
|
||||
*/
|
||||
void update_vsyscall(struct timekeeper *tk)
|
||||
{
|
||||
struct timespec64 *wtm = &tk->wall_to_monotonic;
|
||||
|
||||
if (!cntvct_ok) {
|
||||
/* The entry points have been zeroed, so there is no
|
||||
* point in updating the data page.
|
||||
*/
|
||||
return;
|
||||
}
|
||||
|
||||
vdso_write_begin(vdso_data);
|
||||
|
||||
vdso_data->tk_is_cntvct = tk_is_cntvct(tk);
|
||||
vdso_data->xtime_coarse_sec = tk->xtime_sec;
|
||||
vdso_data->xtime_coarse_nsec = (u32)(tk->tkr_mono.xtime_nsec >>
|
||||
tk->tkr_mono.shift);
|
||||
vdso_data->wtm_clock_sec = wtm->tv_sec;
|
||||
vdso_data->wtm_clock_nsec = wtm->tv_nsec;
|
||||
|
||||
if (vdso_data->tk_is_cntvct) {
|
||||
vdso_data->cs_cycle_last = tk->tkr_mono.cycle_last;
|
||||
vdso_data->xtime_clock_sec = tk->xtime_sec;
|
||||
vdso_data->xtime_clock_snsec = tk->tkr_mono.xtime_nsec;
|
||||
vdso_data->cs_mult = tk->tkr_mono.mult;
|
||||
vdso_data->cs_shift = tk->tkr_mono.shift;
|
||||
vdso_data->cs_mask = tk->tkr_mono.mask;
|
||||
}
|
||||
|
||||
vdso_write_end(vdso_data);
|
||||
|
||||
flush_dcache_page(virt_to_page(vdso_data));
|
||||
}
|
||||
|
||||
void update_vsyscall_tz(void)
|
||||
{
|
||||
vdso_data->tz_minuteswest = sys_tz.tz_minuteswest;
|
||||
vdso_data->tz_dsttime = sys_tz.tz_dsttime;
|
||||
flush_dcache_page(virt_to_page(vdso_data));
|
||||
}
|
||||
|
|
|
|||
|
|
@ -31,7 +31,6 @@
|
|||
PCI_STATUS_PARITY) << 16)
|
||||
|
||||
extern int setup_arm_irq(int, struct irqaction *);
|
||||
extern void pcibios_report_status(u_int status_mask, int warn);
|
||||
|
||||
static unsigned long
|
||||
dc21285_base_address(struct pci_bus *bus, unsigned int devfn)
|
||||
|
|
|
|||
|
|
@ -896,7 +896,10 @@ config VDSO
|
|||
bool "Enable VDSO for acceleration of some system calls"
|
||||
depends on AEABI && MMU && CPU_V7
|
||||
default y if ARM_ARCH_TIMER
|
||||
select HAVE_GENERIC_VDSO
|
||||
select GENERIC_TIME_VSYSCALL
|
||||
select GENERIC_VDSO_32
|
||||
select GENERIC_GETTIMEOFDAY
|
||||
help
|
||||
Place in the process address space an ELF shared object
|
||||
providing fast implementations of gettimeofday and
|
||||
|
|
|
|||
|
|
@ -1559,7 +1559,7 @@ static int arm_coherent_iommu_mmap_attrs(struct device *dev,
|
|||
* free a page as defined by the above mapping.
|
||||
* Must not be called with IRQs disabled.
|
||||
*/
|
||||
void __arm_iommu_free_attrs(struct device *dev, size_t size, void *cpu_addr,
|
||||
static void __arm_iommu_free_attrs(struct device *dev, size_t size, void *cpu_addr,
|
||||
dma_addr_t handle, unsigned long attrs, int coherent_flag)
|
||||
{
|
||||
struct page **pages;
|
||||
|
|
@ -1583,13 +1583,14 @@ void __arm_iommu_free_attrs(struct device *dev, size_t size, void *cpu_addr,
|
|||
__iommu_free_buffer(dev, pages, size, attrs);
|
||||
}
|
||||
|
||||
void arm_iommu_free_attrs(struct device *dev, size_t size,
|
||||
void *cpu_addr, dma_addr_t handle, unsigned long attrs)
|
||||
static void arm_iommu_free_attrs(struct device *dev, size_t size,
|
||||
void *cpu_addr, dma_addr_t handle,
|
||||
unsigned long attrs)
|
||||
{
|
||||
__arm_iommu_free_attrs(dev, size, cpu_addr, handle, attrs, NORMAL);
|
||||
}
|
||||
|
||||
void arm_coherent_iommu_free_attrs(struct device *dev, size_t size,
|
||||
static void arm_coherent_iommu_free_attrs(struct device *dev, size_t size,
|
||||
void *cpu_addr, dma_addr_t handle, unsigned long attrs)
|
||||
{
|
||||
__arm_iommu_free_attrs(dev, size, cpu_addr, handle, attrs, COHERENT);
|
||||
|
|
@ -1713,7 +1714,7 @@ bad_mapping:
|
|||
* possible) and tagged with the appropriate dma address and length. They are
|
||||
* obtained via sg_dma_{address,length}.
|
||||
*/
|
||||
int arm_coherent_iommu_map_sg(struct device *dev, struct scatterlist *sg,
|
||||
static int arm_coherent_iommu_map_sg(struct device *dev, struct scatterlist *sg,
|
||||
int nents, enum dma_data_direction dir, unsigned long attrs)
|
||||
{
|
||||
return __iommu_map_sg(dev, sg, nents, dir, attrs, true);
|
||||
|
|
@ -1731,7 +1732,7 @@ int arm_coherent_iommu_map_sg(struct device *dev, struct scatterlist *sg,
|
|||
* tagged with the appropriate dma address and length. They are obtained via
|
||||
* sg_dma_{address,length}.
|
||||
*/
|
||||
int arm_iommu_map_sg(struct device *dev, struct scatterlist *sg,
|
||||
static int arm_iommu_map_sg(struct device *dev, struct scatterlist *sg,
|
||||
int nents, enum dma_data_direction dir, unsigned long attrs)
|
||||
{
|
||||
return __iommu_map_sg(dev, sg, nents, dir, attrs, false);
|
||||
|
|
@ -1764,8 +1765,8 @@ static void __iommu_unmap_sg(struct device *dev, struct scatterlist *sg,
|
|||
* Unmap a set of streaming mode DMA translations. Again, CPU access
|
||||
* rules concerning calls here are the same as for dma_unmap_single().
|
||||
*/
|
||||
void arm_coherent_iommu_unmap_sg(struct device *dev, struct scatterlist *sg,
|
||||
int nents, enum dma_data_direction dir,
|
||||
static void arm_coherent_iommu_unmap_sg(struct device *dev,
|
||||
struct scatterlist *sg, int nents, enum dma_data_direction dir,
|
||||
unsigned long attrs)
|
||||
{
|
||||
__iommu_unmap_sg(dev, sg, nents, dir, attrs, true);
|
||||
|
|
@ -1781,9 +1782,10 @@ void arm_coherent_iommu_unmap_sg(struct device *dev, struct scatterlist *sg,
|
|||
* Unmap a set of streaming mode DMA translations. Again, CPU access
|
||||
* rules concerning calls here are the same as for dma_unmap_single().
|
||||
*/
|
||||
void arm_iommu_unmap_sg(struct device *dev, struct scatterlist *sg, int nents,
|
||||
enum dma_data_direction dir,
|
||||
unsigned long attrs)
|
||||
static void arm_iommu_unmap_sg(struct device *dev,
|
||||
struct scatterlist *sg, int nents,
|
||||
enum dma_data_direction dir,
|
||||
unsigned long attrs)
|
||||
{
|
||||
__iommu_unmap_sg(dev, sg, nents, dir, attrs, false);
|
||||
}
|
||||
|
|
@ -1795,7 +1797,8 @@ void arm_iommu_unmap_sg(struct device *dev, struct scatterlist *sg, int nents,
|
|||
* @nents: number of buffers to map (returned from dma_map_sg)
|
||||
* @dir: DMA transfer direction (same as was passed to dma_map_sg)
|
||||
*/
|
||||
void arm_iommu_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
|
||||
static void arm_iommu_sync_sg_for_cpu(struct device *dev,
|
||||
struct scatterlist *sg,
|
||||
int nents, enum dma_data_direction dir)
|
||||
{
|
||||
struct scatterlist *s;
|
||||
|
|
@ -1813,7 +1816,8 @@ void arm_iommu_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
|
|||
* @nents: number of buffers to map (returned from dma_map_sg)
|
||||
* @dir: DMA transfer direction (same as was passed to dma_map_sg)
|
||||
*/
|
||||
void arm_iommu_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
|
||||
static void arm_iommu_sync_sg_for_device(struct device *dev,
|
||||
struct scatterlist *sg,
|
||||
int nents, enum dma_data_direction dir)
|
||||
{
|
||||
struct scatterlist *s;
|
||||
|
|
@ -2015,7 +2019,7 @@ static void arm_iommu_sync_single_for_device(struct device *dev,
|
|||
__dma_page_cpu_to_dev(page, offset, size, dir);
|
||||
}
|
||||
|
||||
const struct dma_map_ops iommu_ops = {
|
||||
static const struct dma_map_ops iommu_ops = {
|
||||
.alloc = arm_iommu_alloc_attrs,
|
||||
.free = arm_iommu_free_attrs,
|
||||
.mmap = arm_iommu_mmap_attrs,
|
||||
|
|
@ -2037,7 +2041,7 @@ const struct dma_map_ops iommu_ops = {
|
|||
.dma_supported = arm_dma_supported,
|
||||
};
|
||||
|
||||
const struct dma_map_ops iommu_coherent_ops = {
|
||||
static const struct dma_map_ops iommu_coherent_ops = {
|
||||
.alloc = arm_coherent_iommu_alloc_attrs,
|
||||
.free = arm_coherent_iommu_free_attrs,
|
||||
.mmap = arm_coherent_iommu_mmap_attrs,
|
||||
|
|
|
|||
|
|
@ -30,6 +30,7 @@
|
|||
#include <asm/prom.h>
|
||||
#include <asm/sections.h>
|
||||
#include <asm/setup.h>
|
||||
#include <asm/set_memory.h>
|
||||
#include <asm/system_info.h>
|
||||
#include <asm/tlb.h>
|
||||
#include <asm/fixmap.h>
|
||||
|
|
@ -180,7 +181,7 @@ int pfn_valid(unsigned long pfn)
|
|||
if (__phys_to_pfn(addr) != pfn)
|
||||
return 0;
|
||||
|
||||
return memblock_is_map_memory(__pfn_to_phys(pfn));
|
||||
return memblock_is_map_memory(addr);
|
||||
}
|
||||
EXPORT_SYMBOL(pfn_valid);
|
||||
#endif
|
||||
|
|
@ -593,8 +594,8 @@ static inline bool arch_has_strict_perms(void)
|
|||
return !!(get_cr() & CR_XP);
|
||||
}
|
||||
|
||||
void set_section_perms(struct section_perm *perms, int n, bool set,
|
||||
struct mm_struct *mm)
|
||||
static void set_section_perms(struct section_perm *perms, int n, bool set,
|
||||
struct mm_struct *mm)
|
||||
{
|
||||
size_t i;
|
||||
unsigned long addr;
|
||||
|
|
|
|||
|
|
@ -10,6 +10,8 @@
|
|||
#include <linux/ioport.h>
|
||||
#include <linux/io.h>
|
||||
|
||||
#include <asm/vga.h>
|
||||
|
||||
unsigned long vga_base;
|
||||
EXPORT_SYMBOL(vga_base);
|
||||
|
||||
|
|
|
|||
|
|
@ -491,7 +491,7 @@ cpu_arm1020_name:
|
|||
|
||||
.align
|
||||
|
||||
.section ".proc.info.init", #alloc
|
||||
.section ".proc.info.init", "a"
|
||||
|
||||
.type __arm1020_proc_info,#object
|
||||
__arm1020_proc_info:
|
||||
|
|
|
|||
|
|
@ -449,7 +449,7 @@ arm1020e_crval:
|
|||
|
||||
.align
|
||||
|
||||
.section ".proc.info.init", #alloc
|
||||
.section ".proc.info.init", "a"
|
||||
|
||||
.type __arm1020e_proc_info,#object
|
||||
__arm1020e_proc_info:
|
||||
|
|
|
|||
|
|
@ -443,7 +443,7 @@ arm1022_crval:
|
|||
|
||||
.align
|
||||
|
||||
.section ".proc.info.init", #alloc
|
||||
.section ".proc.info.init", "a"
|
||||
|
||||
.type __arm1022_proc_info,#object
|
||||
__arm1022_proc_info:
|
||||
|
|
|
|||
|
|
@ -138,7 +138,7 @@ ENTRY(arm1026_flush_kern_cache_all)
|
|||
mov ip, #0
|
||||
__flush_whole_cache:
|
||||
#ifndef CONFIG_CPU_DCACHE_DISABLE
|
||||
1: mrc p15, 0, r15, c7, c14, 3 @ test, clean, invalidate
|
||||
1: mrc p15, 0, APSR_nzcv, c7, c14, 3 @ test, clean, invalidate
|
||||
bne 1b
|
||||
#endif
|
||||
tst r2, #VM_EXEC
|
||||
|
|
@ -363,7 +363,7 @@ ENTRY(cpu_arm1026_switch_mm)
|
|||
#ifdef CONFIG_MMU
|
||||
mov r1, #0
|
||||
#ifndef CONFIG_CPU_DCACHE_DISABLE
|
||||
1: mrc p15, 0, r15, c7, c14, 3 @ test, clean, invalidate
|
||||
1: mrc p15, 0, APSR_nzcv, c7, c14, 3 @ test, clean, invalidate
|
||||
bne 1b
|
||||
#endif
|
||||
#ifndef CONFIG_CPU_ICACHE_DISABLE
|
||||
|
|
@ -437,7 +437,7 @@ arm1026_crval:
|
|||
string cpu_arm1026_name, "ARM1026EJ-S"
|
||||
.align
|
||||
|
||||
.section ".proc.info.init", #alloc
|
||||
.section ".proc.info.init", "a"
|
||||
|
||||
.type __arm1026_proc_info,#object
|
||||
__arm1026_proc_info:
|
||||
|
|
|
|||
|
|
@ -172,7 +172,7 @@ arm720_crval:
|
|||
* See <asm/procinfo.h> for a definition of this structure.
|
||||
*/
|
||||
|
||||
.section ".proc.info.init", #alloc
|
||||
.section ".proc.info.init", "a"
|
||||
|
||||
.macro arm720_proc_info name:req, cpu_val:req, cpu_mask:req, cpu_name:req, cpu_flush:req
|
||||
.type __\name\()_proc_info,#object
|
||||
|
|
|
|||
|
|
@ -128,7 +128,7 @@ __arm740_setup:
|
|||
|
||||
.align
|
||||
|
||||
.section ".proc.info.init", #alloc
|
||||
.section ".proc.info.init", "a"
|
||||
.type __arm740_proc_info,#object
|
||||
__arm740_proc_info:
|
||||
.long 0x41807400
|
||||
|
|
|
|||
|
|
@ -72,7 +72,7 @@ __arm7tdmi_setup:
|
|||
|
||||
.align
|
||||
|
||||
.section ".proc.info.init", #alloc
|
||||
.section ".proc.info.init", "a"
|
||||
|
||||
.macro arm7tdmi_proc_info name:req, cpu_val:req, cpu_mask:req, cpu_name:req, \
|
||||
extra_hwcaps=0
|
||||
|
|
|
|||
|
|
@ -434,7 +434,7 @@ arm920_crval:
|
|||
|
||||
.align
|
||||
|
||||
.section ".proc.info.init", #alloc
|
||||
.section ".proc.info.init", "a"
|
||||
|
||||
.type __arm920_proc_info,#object
|
||||
__arm920_proc_info:
|
||||
|
|
|
|||
|
|
@ -412,7 +412,7 @@ arm922_crval:
|
|||
|
||||
.align
|
||||
|
||||
.section ".proc.info.init", #alloc
|
||||
.section ".proc.info.init", "a"
|
||||
|
||||
.type __arm922_proc_info,#object
|
||||
__arm922_proc_info:
|
||||
|
|
|
|||
|
|
@ -477,7 +477,7 @@ arm925_crval:
|
|||
|
||||
.align
|
||||
|
||||
.section ".proc.info.init", #alloc
|
||||
.section ".proc.info.init", "a"
|
||||
|
||||
.macro arm925_proc_info name:req, cpu_val:req, cpu_mask:req, cpu_name:req, cache
|
||||
.type __\name\()_proc_info,#object
|
||||
|
|
|
|||
|
|
@ -131,7 +131,7 @@ __flush_whole_cache:
|
|||
#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH
|
||||
mcr p15, 0, ip, c7, c6, 0 @ invalidate D cache
|
||||
#else
|
||||
1: mrc p15, 0, r15, c7, c14, 3 @ test,clean,invalidate
|
||||
1: mrc p15, 0, APSR_nzcv, c7, c14, 3 @ test,clean,invalidate
|
||||
bne 1b
|
||||
#endif
|
||||
tst r2, #VM_EXEC
|
||||
|
|
@ -358,7 +358,7 @@ ENTRY(cpu_arm926_switch_mm)
|
|||
mcr p15, 0, ip, c7, c6, 0 @ invalidate D cache
|
||||
#else
|
||||
@ && 'Clean & Invalidate whole DCache'
|
||||
1: mrc p15, 0, r15, c7, c14, 3 @ test,clean,invalidate
|
||||
1: mrc p15, 0, APSR_nzcv, c7, c14, 3 @ test,clean,invalidate
|
||||
bne 1b
|
||||
#endif
|
||||
mcr p15, 0, ip, c7, c5, 0 @ invalidate I cache
|
||||
|
|
@ -460,7 +460,7 @@ arm926_crval:
|
|||
|
||||
.align
|
||||
|
||||
.section ".proc.info.init", #alloc
|
||||
.section ".proc.info.init", "a"
|
||||
|
||||
.type __arm926_proc_info,#object
|
||||
__arm926_proc_info:
|
||||
|
|
|
|||
|
|
@ -340,7 +340,7 @@ __arm940_setup:
|
|||
|
||||
.align
|
||||
|
||||
.section ".proc.info.init", #alloc
|
||||
.section ".proc.info.init", "a"
|
||||
|
||||
.type __arm940_proc_info,#object
|
||||
__arm940_proc_info:
|
||||
|
|
|
|||
|
|
@ -395,7 +395,7 @@ __arm946_setup:
|
|||
|
||||
.align
|
||||
|
||||
.section ".proc.info.init", #alloc
|
||||
.section ".proc.info.init", "a"
|
||||
.type __arm946_proc_info,#object
|
||||
__arm946_proc_info:
|
||||
.long 0x41009460
|
||||
|
|
|
|||
|
|
@ -66,7 +66,7 @@ __arm9tdmi_setup:
|
|||
|
||||
.align
|
||||
|
||||
.section ".proc.info.init", #alloc
|
||||
.section ".proc.info.init", "a"
|
||||
|
||||
.macro arm9tdmi_proc_info name:req, cpu_val:req, cpu_mask:req, cpu_name:req
|
||||
.type __\name\()_proc_info, #object
|
||||
|
|
|
|||
|
|
@ -185,7 +185,7 @@ fa526_cr1_set:
|
|||
|
||||
.align
|
||||
|
||||
.section ".proc.info.init", #alloc
|
||||
.section ".proc.info.init", "a"
|
||||
|
||||
.type __fa526_proc_info,#object
|
||||
__fa526_proc_info:
|
||||
|
|
|
|||
|
|
@ -571,7 +571,7 @@ feroceon_crval:
|
|||
|
||||
.align
|
||||
|
||||
.section ".proc.info.init", #alloc
|
||||
.section ".proc.info.init", "a"
|
||||
|
||||
.macro feroceon_proc_info name:req, cpu_val:req, cpu_mask:req, cpu_name:req, cache:req
|
||||
.type __\name\()_proc_info,#object
|
||||
|
|
|
|||
|
|
@ -416,7 +416,7 @@ mohawk_crval:
|
|||
|
||||
.align
|
||||
|
||||
.section ".proc.info.init", #alloc
|
||||
.section ".proc.info.init", "a"
|
||||
|
||||
.type __88sv331x_proc_info,#object
|
||||
__88sv331x_proc_info:
|
||||
|
|
|
|||
|
|
@ -196,7 +196,7 @@ sa110_crval:
|
|||
|
||||
.align
|
||||
|
||||
.section ".proc.info.init", #alloc
|
||||
.section ".proc.info.init", "a"
|
||||
|
||||
.type __sa110_proc_info,#object
|
||||
__sa110_proc_info:
|
||||
|
|
|
|||
|
|
@ -239,7 +239,7 @@ sa1100_crval:
|
|||
|
||||
.align
|
||||
|
||||
.section ".proc.info.init", #alloc
|
||||
.section ".proc.info.init", "a"
|
||||
|
||||
.macro sa1100_proc_info name:req, cpu_val:req, cpu_mask:req, cpu_name:req
|
||||
.type __\name\()_proc_info,#object
|
||||
|
|
|
|||
|
|
@ -261,7 +261,7 @@ v6_crval:
|
|||
string cpu_elf_name, "v6"
|
||||
.align
|
||||
|
||||
.section ".proc.info.init", #alloc
|
||||
.section ".proc.info.init", "a"
|
||||
|
||||
/*
|
||||
* Match any ARMv6 processor core.
|
||||
|
|
|
|||
|
|
@ -64,6 +64,9 @@ static void cpu_v7_spectre_init(void)
|
|||
break;
|
||||
|
||||
#ifdef CONFIG_ARM_PSCI
|
||||
case ARM_CPU_PART_BRAHMA_B53:
|
||||
/* Requires no workaround */
|
||||
break;
|
||||
default:
|
||||
/* Other ARM CPUs require no workaround */
|
||||
if (read_cpuid_implementor() == ARM_CPU_IMP_ARM)
|
||||
|
|
|
|||
|
|
@ -644,7 +644,7 @@ __v7_setup_stack:
|
|||
string cpu_elf_name, "v7"
|
||||
.align
|
||||
|
||||
.section ".proc.info.init", #alloc
|
||||
.section ".proc.info.init", "a"
|
||||
|
||||
/*
|
||||
* Standard v7 proc info content
|
||||
|
|
|
|||
|
|
@ -93,7 +93,7 @@ ENTRY(cpu_cm7_proc_fin)
|
|||
ret lr
|
||||
ENDPROC(cpu_cm7_proc_fin)
|
||||
|
||||
.section ".init.text", #alloc, #execinstr
|
||||
.section ".init.text", "ax"
|
||||
|
||||
__v7m_cm7_setup:
|
||||
mov r8, #(V7M_SCB_CCR_DC | V7M_SCB_CCR_IC| V7M_SCB_CCR_BP)
|
||||
|
|
@ -177,7 +177,7 @@ ENDPROC(__v7m_setup)
|
|||
string cpu_elf_name "v7m"
|
||||
string cpu_v7m_name "ARMv7-M"
|
||||
|
||||
.section ".proc.info.init", #alloc
|
||||
.section ".proc.info.init", "a"
|
||||
|
||||
.macro __v7m_proc name, initfunc, cache_fns = nop_cache_fns, hwcaps = 0, proc_fns = v7m_processor_functions
|
||||
.long 0 /* proc_info_list.__cpu_mm_mmu_flags */
|
||||
|
|
|
|||
|
|
@ -496,7 +496,7 @@ xsc3_crval:
|
|||
|
||||
.align
|
||||
|
||||
.section ".proc.info.init", #alloc
|
||||
.section ".proc.info.init", "a"
|
||||
|
||||
.macro xsc3_proc_info name:req, cpu_val:req, cpu_mask:req
|
||||
.type __\name\()_proc_info,#object
|
||||
|
|
|
|||
|
|
@ -610,7 +610,7 @@ xscale_crval:
|
|||
|
||||
.align
|
||||
|
||||
.section ".proc.info.init", #alloc
|
||||
.section ".proc.info.init", "a"
|
||||
|
||||
.macro xscale_proc_info name:req, cpu_val:req, cpu_mask:req, cpu_name:req, cache
|
||||
.type __\name\()_proc_info,#object
|
||||
|
|
|
|||
|
|
@ -1,7 +1,13 @@
|
|||
# SPDX-License-Identifier: GPL-2.0
|
||||
|
||||
# Absolute relocation type $(ARCH_REL_TYPE_ABS) needs to be defined before
|
||||
# the inclusion of generic Makefile.
|
||||
ARCH_REL_TYPE_ABS := R_ARM_JUMP_SLOT|R_ARM_GLOB_DAT|R_ARM_ABS32
|
||||
include $(srctree)/lib/vdso/Makefile
|
||||
|
||||
hostprogs-y := vdsomunge
|
||||
|
||||
obj-vdso := vgettimeofday.o datapage.o
|
||||
obj-vdso := vgettimeofday.o datapage.o note.o
|
||||
|
||||
# Build rules
|
||||
targets := $(obj-vdso) vdso.so vdso.so.dbg vdso.so.raw vdso.lds
|
||||
|
|
@ -24,7 +30,11 @@ CFLAGS_REMOVE_vdso.o = -pg
|
|||
|
||||
# Force -O2 to avoid libgcc dependencies
|
||||
CFLAGS_REMOVE_vgettimeofday.o = -pg -Os
|
||||
ifeq ($(c-gettimeofday-y),)
|
||||
CFLAGS_vgettimeofday.o = -O2
|
||||
else
|
||||
CFLAGS_vgettimeofday.o = -O2 -include $(c-gettimeofday-y)
|
||||
endif
|
||||
|
||||
# Disable gcov profiling for VDSO code
|
||||
GCOV_PROFILE := n
|
||||
|
|
@ -37,7 +47,7 @@ $(obj)/vdso.o : $(obj)/vdso.so
|
|||
|
||||
# Link rule for the .so file
|
||||
$(obj)/vdso.so.raw: $(obj)/vdso.lds $(obj-vdso) FORCE
|
||||
$(call if_changed,ld)
|
||||
$(call if_changed,vdsold_and_vdso_check)
|
||||
|
||||
$(obj)/vdso.so.dbg: $(obj)/vdso.so.raw $(obj)/vdsomunge FORCE
|
||||
$(call if_changed,vdsomunge)
|
||||
|
|
@ -47,6 +57,10 @@ $(obj)/%.so: OBJCOPYFLAGS := -S
|
|||
$(obj)/%.so: $(obj)/%.so.dbg FORCE
|
||||
$(call if_changed,objcopy)
|
||||
|
||||
# Actual build commands
|
||||
quiet_cmd_vdsold_and_vdso_check = LD $@
|
||||
cmd_vdsold_and_vdso_check = $(cmd_ld); $(cmd_vdso_check)
|
||||
|
||||
quiet_cmd_vdsomunge = MUNGE $@
|
||||
cmd_vdsomunge = $(objtree)/$(obj)/vdsomunge $< $@
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,15 @@
|
|||
// SPDX-License-Identifier: GPL-2.0
|
||||
/*
|
||||
* Copyright (C) 2012-2018 ARM Limited
|
||||
*
|
||||
* This supplies .note.* sections to go into the PT_NOTE inside the vDSO text.
|
||||
* Here we can supply some information useful to userland.
|
||||
*/
|
||||
|
||||
#include <linux/uts.h>
|
||||
#include <linux/version.h>
|
||||
#include <linux/elfnote.h>
|
||||
#include <linux/build-salt.h>
|
||||
|
||||
ELFNOTE32("Linux", 0, LINUX_VERSION_CODE);
|
||||
BUILD_SALT;
|
||||
|
|
@ -71,6 +71,8 @@ VERSION
|
|||
global:
|
||||
__vdso_clock_gettime;
|
||||
__vdso_gettimeofday;
|
||||
__vdso_clock_getres;
|
||||
__vdso_clock_gettime64;
|
||||
local: *;
|
||||
};
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,259 +1,34 @@
|
|||
// SPDX-License-Identifier: GPL-2.0-only
|
||||
/*
|
||||
* ARM userspace implementations of gettimeofday() and similar.
|
||||
*
|
||||
* Copyright 2015 Mentor Graphics Corporation.
|
||||
*/
|
||||
|
||||
#include <linux/compiler.h>
|
||||
#include <linux/hrtimer.h>
|
||||
#include <linux/time.h>
|
||||
#include <asm/barrier.h>
|
||||
#include <asm/bug.h>
|
||||
#include <asm/cp15.h>
|
||||
#include <asm/page.h>
|
||||
#include <asm/unistd.h>
|
||||
#include <asm/vdso_datapage.h>
|
||||
#include <linux/types.h>
|
||||
|
||||
#ifndef CONFIG_AEABI
|
||||
#error This code depends on AEABI system call conventions
|
||||
#endif
|
||||
|
||||
extern struct vdso_data *__get_datapage(void);
|
||||
|
||||
static notrace u32 __vdso_read_begin(const struct vdso_data *vdata)
|
||||
int __vdso_clock_gettime(clockid_t clock,
|
||||
struct old_timespec32 *ts)
|
||||
{
|
||||
u32 seq;
|
||||
repeat:
|
||||
seq = READ_ONCE(vdata->seq_count);
|
||||
if (seq & 1) {
|
||||
cpu_relax();
|
||||
goto repeat;
|
||||
}
|
||||
return seq;
|
||||
return __cvdso_clock_gettime32(clock, ts);
|
||||
}
|
||||
|
||||
static notrace u32 vdso_read_begin(const struct vdso_data *vdata)
|
||||
int __vdso_clock_gettime64(clockid_t clock,
|
||||
struct __kernel_timespec *ts)
|
||||
{
|
||||
u32 seq;
|
||||
|
||||
seq = __vdso_read_begin(vdata);
|
||||
|
||||
smp_rmb(); /* Pairs with smp_wmb in vdso_write_end */
|
||||
return seq;
|
||||
return __cvdso_clock_gettime(clock, ts);
|
||||
}
|
||||
|
||||
static notrace int vdso_read_retry(const struct vdso_data *vdata, u32 start)
|
||||
int __vdso_gettimeofday(struct __kernel_old_timeval *tv,
|
||||
struct timezone *tz)
|
||||
{
|
||||
smp_rmb(); /* Pairs with smp_wmb in vdso_write_begin */
|
||||
return vdata->seq_count != start;
|
||||
return __cvdso_gettimeofday(tv, tz);
|
||||
}
|
||||
|
||||
static notrace long clock_gettime_fallback(clockid_t _clkid,
|
||||
struct timespec *_ts)
|
||||
int __vdso_clock_getres(clockid_t clock_id,
|
||||
struct old_timespec32 *res)
|
||||
{
|
||||
register struct timespec *ts asm("r1") = _ts;
|
||||
register clockid_t clkid asm("r0") = _clkid;
|
||||
register long ret asm ("r0");
|
||||
register long nr asm("r7") = __NR_clock_gettime;
|
||||
|
||||
asm volatile(
|
||||
" swi #0\n"
|
||||
: "=r" (ret)
|
||||
: "r" (clkid), "r" (ts), "r" (nr)
|
||||
: "memory");
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static notrace int do_realtime_coarse(struct timespec *ts,
|
||||
struct vdso_data *vdata)
|
||||
{
|
||||
u32 seq;
|
||||
|
||||
do {
|
||||
seq = vdso_read_begin(vdata);
|
||||
|
||||
ts->tv_sec = vdata->xtime_coarse_sec;
|
||||
ts->tv_nsec = vdata->xtime_coarse_nsec;
|
||||
|
||||
} while (vdso_read_retry(vdata, seq));
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static notrace int do_monotonic_coarse(struct timespec *ts,
|
||||
struct vdso_data *vdata)
|
||||
{
|
||||
struct timespec tomono;
|
||||
u32 seq;
|
||||
|
||||
do {
|
||||
seq = vdso_read_begin(vdata);
|
||||
|
||||
ts->tv_sec = vdata->xtime_coarse_sec;
|
||||
ts->tv_nsec = vdata->xtime_coarse_nsec;
|
||||
|
||||
tomono.tv_sec = vdata->wtm_clock_sec;
|
||||
tomono.tv_nsec = vdata->wtm_clock_nsec;
|
||||
|
||||
} while (vdso_read_retry(vdata, seq));
|
||||
|
||||
ts->tv_sec += tomono.tv_sec;
|
||||
timespec_add_ns(ts, tomono.tv_nsec);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_ARM_ARCH_TIMER
|
||||
|
||||
static notrace u64 get_ns(struct vdso_data *vdata)
|
||||
{
|
||||
u64 cycle_delta;
|
||||
u64 cycle_now;
|
||||
u64 nsec;
|
||||
|
||||
isb();
|
||||
cycle_now = read_sysreg(CNTVCT);
|
||||
|
||||
cycle_delta = (cycle_now - vdata->cs_cycle_last) & vdata->cs_mask;
|
||||
|
||||
nsec = (cycle_delta * vdata->cs_mult) + vdata->xtime_clock_snsec;
|
||||
nsec >>= vdata->cs_shift;
|
||||
|
||||
return nsec;
|
||||
}
|
||||
|
||||
static notrace int do_realtime(struct timespec *ts, struct vdso_data *vdata)
|
||||
{
|
||||
u64 nsecs;
|
||||
u32 seq;
|
||||
|
||||
do {
|
||||
seq = vdso_read_begin(vdata);
|
||||
|
||||
if (!vdata->tk_is_cntvct)
|
||||
return -1;
|
||||
|
||||
ts->tv_sec = vdata->xtime_clock_sec;
|
||||
nsecs = get_ns(vdata);
|
||||
|
||||
} while (vdso_read_retry(vdata, seq));
|
||||
|
||||
ts->tv_nsec = 0;
|
||||
timespec_add_ns(ts, nsecs);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static notrace int do_monotonic(struct timespec *ts, struct vdso_data *vdata)
|
||||
{
|
||||
struct timespec tomono;
|
||||
u64 nsecs;
|
||||
u32 seq;
|
||||
|
||||
do {
|
||||
seq = vdso_read_begin(vdata);
|
||||
|
||||
if (!vdata->tk_is_cntvct)
|
||||
return -1;
|
||||
|
||||
ts->tv_sec = vdata->xtime_clock_sec;
|
||||
nsecs = get_ns(vdata);
|
||||
|
||||
tomono.tv_sec = vdata->wtm_clock_sec;
|
||||
tomono.tv_nsec = vdata->wtm_clock_nsec;
|
||||
|
||||
} while (vdso_read_retry(vdata, seq));
|
||||
|
||||
ts->tv_sec += tomono.tv_sec;
|
||||
ts->tv_nsec = 0;
|
||||
timespec_add_ns(ts, nsecs + tomono.tv_nsec);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
#else /* CONFIG_ARM_ARCH_TIMER */
|
||||
|
||||
static notrace int do_realtime(struct timespec *ts, struct vdso_data *vdata)
|
||||
{
|
||||
return -1;
|
||||
}
|
||||
|
||||
static notrace int do_monotonic(struct timespec *ts, struct vdso_data *vdata)
|
||||
{
|
||||
return -1;
|
||||
}
|
||||
|
||||
#endif /* CONFIG_ARM_ARCH_TIMER */
|
||||
|
||||
notrace int __vdso_clock_gettime(clockid_t clkid, struct timespec *ts)
|
||||
{
|
||||
struct vdso_data *vdata;
|
||||
int ret = -1;
|
||||
|
||||
vdata = __get_datapage();
|
||||
|
||||
switch (clkid) {
|
||||
case CLOCK_REALTIME_COARSE:
|
||||
ret = do_realtime_coarse(ts, vdata);
|
||||
break;
|
||||
case CLOCK_MONOTONIC_COARSE:
|
||||
ret = do_monotonic_coarse(ts, vdata);
|
||||
break;
|
||||
case CLOCK_REALTIME:
|
||||
ret = do_realtime(ts, vdata);
|
||||
break;
|
||||
case CLOCK_MONOTONIC:
|
||||
ret = do_monotonic(ts, vdata);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
if (ret)
|
||||
ret = clock_gettime_fallback(clkid, ts);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static notrace long gettimeofday_fallback(struct timeval *_tv,
|
||||
struct timezone *_tz)
|
||||
{
|
||||
register struct timezone *tz asm("r1") = _tz;
|
||||
register struct timeval *tv asm("r0") = _tv;
|
||||
register long ret asm ("r0");
|
||||
register long nr asm("r7") = __NR_gettimeofday;
|
||||
|
||||
asm volatile(
|
||||
" swi #0\n"
|
||||
: "=r" (ret)
|
||||
: "r" (tv), "r" (tz), "r" (nr)
|
||||
: "memory");
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
notrace int __vdso_gettimeofday(struct timeval *tv, struct timezone *tz)
|
||||
{
|
||||
struct timespec ts;
|
||||
struct vdso_data *vdata;
|
||||
int ret;
|
||||
|
||||
vdata = __get_datapage();
|
||||
|
||||
ret = do_realtime(&ts, vdata);
|
||||
if (ret)
|
||||
return gettimeofday_fallback(tv, tz);
|
||||
|
||||
if (tv) {
|
||||
tv->tv_sec = ts.tv_sec;
|
||||
tv->tv_usec = ts.tv_nsec / 1000;
|
||||
}
|
||||
if (tz) {
|
||||
tz->tz_minuteswest = vdata->tz_minuteswest;
|
||||
tz->tz_dsttime = vdata->tz_dsttime;
|
||||
}
|
||||
|
||||
return ret;
|
||||
return __cvdso_clock_getres_time32(clock_id, res);
|
||||
}
|
||||
|
||||
/* Avoid unresolved references emitted by GCC */
|
||||
|
|
|
|||
Loading…
Reference in New Issue