diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-11-16 12:50:35 -0800 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-11-16 12:50:35 -0800 |
commit | 441692aafc1731087bbaf657a8b6059d95c2a6df (patch) | |
tree | 9d3dd6d6e882bc9bb69e3389715b720ee9001ead | |
parent | 5b0e2cb020085efe202123162502e0b551e49a0e (diff) | |
parent | 02196144a0a0ad71fb75bd4a5a4785ab36c3b78e (diff) |
Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM updates from Russell King:
- add support for ELF fdpic binaries on both MMU and noMMU platforms
- linker script cleanups
- support for compressed .data section for XIP images
- discard memblock arrays when possible
- various cleanups
- atomic DMA pool updates
- better diagnostics of missing/corrupt device tree
- export information to allow userspace kexec tool to place images more
inteligently, so that the device tree isn't overwritten by the
booting kernel
- make early_printk more efficient on semihosted systems
- noMMU cleanups
- SA1111 PCMCIA update in preparation for further cleanups
* 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: (38 commits)
ARM: 8719/1: NOMMU: work around maybe-uninitialized warning
ARM: 8717/2: debug printch/printascii: translate '\n' to "\r\n" not "\n\r"
ARM: 8713/1: NOMMU: Support MPU in XIP configuration
ARM: 8712/1: NOMMU: Use more MPU regions to cover memory
ARM: 8711/1: V7M: Add support for MPU to M-class
ARM: 8710/1: Kconfig: Kill CONFIG_VECTORS_BASE
ARM: 8709/1: NOMMU: Disallow MPU for XIP
ARM: 8708/1: NOMMU: Rework MPU to be mostly done in C
ARM: 8707/1: NOMMU: Update MPU accessors to use cp15 helpers
ARM: 8706/1: NOMMU: Move out MPU setup in separate module
ARM: 8702/1: head-common.S: Clear lr before jumping to start_kernel()
ARM: 8705/1: early_printk: use printascii() rather than printch()
ARM: 8703/1: debug.S: move hexbuf to a writable section
ARM: add additional table to compressed kernel
ARM: decompressor: fix BSS size calculation
pcmcia: sa1111: remove special sa1111 mmio accessors
pcmcia: sa1111: use sa1111_get_irq() to obtain IRQ resources
ARM: better diagnostics with missing/corrupt dtb
ARM: 8699/1: dma-mapping: Remove init_dma_coherent_pool_size()
ARM: 8698/1: dma-mapping: Mark atomic_pool as __ro_after_init
..
46 files changed, 1226 insertions, 540 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index d1346a160760..4f3ee0ef8fa7 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -3,6 +3,7 @@ config ARM bool default y select ARCH_CLOCKSOURCE_DATA + select ARCH_DISCARD_MEMBLOCK if !HAVE_ARCH_PFN_VALID select ARCH_HAS_DEBUG_VIRTUAL select ARCH_HAS_DEVMEM_IS_ALLOWED select ARCH_HAS_ELF_RANDOMIZE @@ -240,15 +241,6 @@ config NEED_RET_TO_USER config ARCH_MTD_XIP bool -config VECTORS_BASE - hex - default 0xffff0000 if MMU || CPU_HIGH_VECTOR - default DRAM_BASE if REMAP_VECTORS_TO_RAM - default 0x00000000 - help - The base address of exception vectors. This must be two pages - in size. - config ARM_PATCH_PHYS_VIRT bool "Patch physical to virtual translations at runtime" if EMBEDDED default y @@ -2006,6 +1998,17 @@ config XIP_PHYS_ADDR be linked for and stored to. This address is dependent on your own flash usage. +config XIP_DEFLATED_DATA + bool "Store kernel .data section compressed in ROM" + depends on XIP_KERNEL + select ZLIB_INFLATE + help + Before the kernel is actually executed, its .data section has to be + copied to RAM from ROM. This option allows for storing that data + in compressed form and decompressed to RAM rather than merely being + copied, saving some precious ROM space. A possible drawback is a + slightly longer boot delay. + config KEXEC bool "Kexec system call (EXPERIMENTAL)" depends on (!SMP || PM_SLEEP_SMP) diff --git a/arch/arm/Kconfig-nommu b/arch/arm/Kconfig-nommu index 22f34c423be6..1168a03c8525 100644 --- a/arch/arm/Kconfig-nommu +++ b/arch/arm/Kconfig-nommu @@ -53,8 +53,8 @@ config REMAP_VECTORS_TO_RAM config ARM_MPU bool 'Use the ARM v7 PMSA Compliant MPU' - depends on CPU_V7 - default y + depends on CPU_V7 || CPU_V7M + default y if CPU_V7 help Some ARM systems without an MMU have instead a Memory Protection Unit (MPU) that defines the type and permissions for regions of diff --git a/arch/arm/boot/Makefile b/arch/arm/boot/Makefile index 50f8d1be7fcb..a3af4dc08c3e 100644 --- a/arch/arm/boot/Makefile +++ b/arch/arm/boot/Makefile @@ -31,8 +31,19 @@ targets := Image zImage xipImage bootpImage uImage ifeq ($(CONFIG_XIP_KERNEL),y) +cmd_deflate_xip_data = $(CONFIG_SHELL) -c \ + '$(srctree)/$(src)/deflate_xip_data.sh $< $@ || { rm -f $@; false; }' + +ifeq ($(CONFIG_XIP_DEFLATED_DATA),y) +quiet_cmd_mkxip = XIPZ $@ +cmd_mkxip = $(cmd_objcopy) && $(cmd_deflate_xip_data) +else +quiet_cmd_mkxip = $(quiet_cmd_objcopy) +cmd_mkxip = $(cmd_objcopy) +endif + $(obj)/xipImage: vmlinux FORCE - $(call if_changed,objcopy) + $(call if_changed,mkxip) @$(kecho) ' Physical Address of xipImage: $(CONFIG_XIP_PHYS_ADDR)' $(obj)/Image $(obj)/zImage: FORCE diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile index a5889238fc9f..45a6b9b7af2a 100644 --- a/arch/arm/boot/compressed/Makefile +++ b/arch/arm/boot/compressed/Makefile @@ -117,8 +117,11 @@ ccflags-y := -fpic -mno-single-pic-base -fno-builtin -I$(obj) asflags-y := -DZIMAGE # Supply kernel BSS size to the decompressor via a linker symbol. -KBSS_SZ = $(shell $(CROSS_COMPILE)size $(obj)/../../../../vmlinux | \ - awk 'END{print $$3}') +KBSS_SZ = $(shell $(CROSS_COMPILE)nm $(obj)/../../../../vmlinux | \ + perl -e 'while (<>) { \ + $$bss_start=hex($$1) if /^([[:xdigit:]]+) B __bss_start$$/; \ + $$bss_end=hex($$1) if /^([[:xdigit:]]+) B __bss_stop$$/; \ + }; printf "%d\n", $$bss_end - $$bss_start;') LDFLAGS_vmlinux = --defsym _kernel_bss_size=$(KBSS_SZ) # Supply ZRELADDR to the decompressor via a linker symbol. ifneq ($(CONFIG_AUTO_ZRELADDR),y) diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S index 8a756870c238..45c8823c3750 100644 --- a/arch/arm/boot/compressed/head.S +++ b/arch/arm/boot/compressed/head.S @@ -143,6 +143,8 @@ start: .word _magic_start @ absolute load/run zImage address .word _magic_end @ zImage end address .word 0x04030201 @ endianness flag + .word 0x45454545 @ another magic number to indicate + .word _magic_table @ additional data table __EFI_HEADER 1: diff --git a/arch/arm/boot/compressed/vmlinux.lds.S b/arch/arm/boot/compressed/vmlinux.lds.S index 7d06aa19c3e6..e6bf6774c4bb 100644 --- a/arch/arm/boot/compressed/vmlinux.lds.S +++ b/arch/arm/boot/compressed/vmlinux.lds.S @@ -44,12 +44,22 @@ SECTIONS *(.glue_7t) *(.glue_7) } + .table : ALIGN(4) { + _table_start = .; + LONG(ZIMAGE_MAGIC(2)) + LONG(ZIMAGE_MAGIC(0x5a534c4b)) + LONG(ZIMAGE_MAGIC(__piggy_size_addr - _start)) + LONG(ZIMAGE_MAGIC(_kernel_bss_size)) + LONG(0) + _table_end = .; + } .rodata : { *(.rodata) *(.rodata.*) } .piggydata : { *(.piggydata) + __piggy_size_addr = . - 4; } . = ALIGN(4); @@ -97,6 +107,7 @@ SECTIONS _magic_sig = ZIMAGE_MAGIC(0x016f2818); _magic_start = ZIMAGE_MAGIC(_start); _magic_end = ZIMAGE_MAGIC(_edata); + _magic_table = ZIMAGE_MAGIC(_table_start - _start); . = BSS_START; __bss_start = .; diff --git a/arch/arm/boot/deflate_xip_data.sh b/arch/arm/boot/deflate_xip_data.sh new file mode 100755 index 000000000000..1189598a25eb --- /dev/null +++ b/arch/arm/boot/deflate_xip_data.sh @@ -0,0 +1,64 @@ +#!/bin/sh + +# XIP kernel .data segment compressor +# +# Created by: Nicolas Pitre, August 2017 +# Copyright: (C) 2017 Linaro Limited +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License version 2 as +# published by the Free Software Foundation. + +# This script locates the start of the .data section in xipImage and +# substitutes it with a compressed version. The needed offsets are obtained +# from symbol addresses in vmlinux. It is expected that .data extends to +# the end of xipImage. + +set -e + +VMLINUX="$1" +XIPIMAGE="$2" + +DD="dd status=none" + +# Use "make V=1" to debug this script. +case "$KBUILD_VERBOSE" in +*1*) + set -x + ;; +esac + +sym_val() { + # extract hex value for symbol in $1 + local val=$($NM "$VMLINUX" | sed -n "/ $1$/{s/ .*$//p;q}") + [ "$val" ] || { echo "can't find $1 in $VMLINUX" 1>&2; exit 1; } + # convert from hex to decimal + echo $((0x$val)) +} + +__data_loc=$(sym_val __data_loc) +_edata_loc=$(sym_val _edata_loc) +base_offset=$(sym_val _xiprom) + +# convert to file based offsets +data_start=$(($__data_loc - $base_offset)) +data_end=$(($_edata_loc - $base_offset)) + +# Make sure data occupies the last part of the file. +file_end=$(stat -c "%s" "$XIPIMAGE") +if [ "$file_end" != "$data_end" ]; then + printf "end of xipImage doesn't match with _edata_loc (%#x vs %#x)\n" \ + $(($file_end + $base_offset)) $_edata_loc 2>&1 + exit 1; +fi + +# be ready to clean up +trap 'rm -f "$XIPIMAGE.tmp"' 0 1 2 3 + +# substitute the data section by a compressed version +$DD if="$XIPIMAGE" count=$data_start iflag=count_bytes of="$XIPIMAGE.tmp" +$DD if="$XIPIMAGE" skip=$data_start iflag=skip_bytes | +gzip -9 >> "$XIPIMAGE.tmp" + +# replace kernel binary +mv -f "$XIPIMAGE.tmp" "$XIPIMAGE" diff --git a/arch/arm/include/asm/cputype.h b/arch/arm/include/asm/cputype.h index 441933311bbf..cb546425da8a 100644 --- a/arch/arm/include/asm/cputype.h +++ b/arch/arm/include/asm/cputype.h @@ -174,6 +174,11 @@ static inline unsigned int __attribute_const__ read_cpuid_cachetype(void) return read_cpuid(CPUID_CACHETYPE); } +static inline unsigned int __attribute_const__ read_cpuid_mputype(void) +{ + return read_cpuid(CPUID_MPUIR); +} + #elif defined(CONFIG_CPU_V7M) static inline unsigned int __attribute_const__ read_cpuid_id(void) @@ -186,6 +191,11 @@ static inline unsigned int __attribute_const__ read_cpuid_cachetype(void) return readl(BASEADDR_V7M_SCB + V7M_SCB_CTR); } +static inline unsigned int __attribute_const__ read_cpuid_mputype(void) +{ + return readl(BASEADDR_V7M_SCB + MPU_TYPE); +} + #else /* ifdef CONFIG_CPU_CP15 / elif defined(CONFIG_CPU_V7M) */ static inline unsigned int __attribute_const__ read_cpuid_id(void) diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h index 3ca119997818..daf837423a76 100644 --- a/arch/arm/include/asm/dma-mapping.h +++ b/arch/arm/include/asm/dma-mapping.h @@ -191,13 +191,6 @@ extern int arm_dma_mmap(struct device *dev, struct vm_area_struct *vma, unsigned long attrs); /* - * This can be called during early boot to increase the size of the atomic - * coherent DMA pool above the default value of 256KiB. It must be called - * before postcore_initcall. - */ -extern void __init init_dma_coherent_pool_size(unsigned long size); - -/* * For SA-1111, IXP425, and ADI systems the dma-mapping functions are "magic" * and utilize bounce buffers as needed to work around limited DMA windows. * diff --git a/arch/arm/include/asm/elf.h b/arch/arm/include/asm/elf.h index 8c5ca92a87a9..b078d992414b 100644 --- a/arch/arm/include/asm/elf.h +++ b/arch/arm/include/asm/elf.h @@ -101,10 +101,15 @@ struct elf32_hdr; extern int elf_check_arch(const struct elf32_hdr *); #define elf_check_arch elf_check_arch +#define ELFOSABI_ARM_FDPIC 65 /* ARM FDPIC platform */ +#define elf_check_fdpic(x) ((x)->e_ident[EI_OSABI] == ELFOSABI_ARM_FDPIC) +#define elf_check_const_displacement(x) ((x)->e_flags & EF_ARM_PIC) +#define ELF_FDPIC_CORE_EFLAGS 0 + #define vmcore_elf64_check_arch(x) (0) -extern int arm_elf_read_implies_exec(const struct elf32_hdr *, int); -#define elf_read_implies_exec(ex,stk) arm_elf_read_implies_exec(&(ex), stk) +extern int arm_elf_read_implies_exec(int); +#define elf_read_implies_exec(ex,stk) arm_elf_read_implies_exec(stk) struct task_struct; int dump_task_regs(struct task_struct *t, elf_gregset_t *elfregs); @@ -121,6 +126,13 @@ int dump_task_regs(struct task_struct *t, elf_gregset_t *elfregs); have no such handler. */ #define ELF_PLAT_INIT(_r, load_addr) (_r)->ARM_r0 = 0 +#define ELF_FDPIC_PLAT_INIT(_r, _exec_map_addr, _interp_map_addr, dynamic_addr) \ + do { \ + (_r)->ARM_r7 = _exec_map_addr; \ + (_r)->ARM_r8 = _interp_map_addr; \ + (_r)->ARM_r9 = dynamic_addr; \ + } while(0) + extern void elf_set_personality(const struct elf32_hdr *); #define SET_PERSONALITY(ex) elf_set_personality(&(ex)) diff --git a/arch/arm/include/asm/highmem.h b/arch/arm/include/asm/highmem.h index b03d3fa2e58d..eb4e4207cd3c 100644 --- a/arch/arm/include/asm/highmem.h +++ b/arch/arm/include/asm/highmem.h @@ -19,7 +19,6 @@ } while (0) extern pte_t *pkmap_page_table; -extern pte_t *fixmap_page_table; extern void *kmap_high(struct page *page); extern void kunmap_high(struct page *page); diff --git a/arch/arm/include/asm/mmu.h b/arch/arm/include/asm/mmu.h index 65669b9ce128..1592a4264488 100644 --- a/arch/arm/include/asm/mmu.h +++ b/arch/arm/include/asm/mmu.h @@ -15,6 +15,10 @@ typedef struct { #ifdef CONFIG_VDSO unsigned long vdso; #endif +#ifdef CONFIG_BINFMT_ELF_FDPIC + unsigned long exec_fdpic_loadmap; + unsigned long interp_fdpic_loadmap; +#endif } mm_context_t; #ifdef CONFIG_CPU_HAS_ASID @@ -34,6 +38,10 @@ typedef struct { */ typedef struct { unsigned long end_brk; +#ifdef CONFIG_BINFMT_ELF_FDPIC + unsigned long exec_fdpic_loadmap; + unsigned long interp_fdpic_loadmap; +#endif } mm_context_t; #endif diff --git a/arch/arm/include/asm/mpu.h b/arch/arm/include/asm/mpu.h index 0c3f774fa4b5..6d1491c8ee22 100644 --- a/arch/arm/include/asm/mpu.h +++ b/arch/arm/include/asm/mpu.h @@ -2,8 +2,6 @@ #ifndef __ARM_MPU_H #define __ARM_MPU_H -#ifdef CONFIG_ARM_MPU - /* MPUIR layout */ #define MPUIR_nU 1 #define MPUIR_DREGION 8 @@ -18,6 +16,11 @@ /* MPU D/I Size Register fields */ #define MPU_RSR_SZ 1 #define MPU_RSR_EN 0 +#define MPU_RSR_SD 8 + +/* Number of subregions (SD) */ +#define MPU_NR_SUBREGS 8 +#define MPU_MIN_SUBREG_SIZE 256 /* The D/I RSR value for an enabled region spanning the whole of memory */ #define MPU_RSR_ALL_MEM 63 @@ -39,6 +42,7 @@ #endif /* Access permission bits of ACR (only define those that we use)*/ +#define MPU_AP_PL1RO_PL0NA (0x5 << 8) #define MPU_AP_PL1RW_PL0RW (0x3 << 8) #define MPU_AP_PL1RW_PL0R0 (0x2 << 8) #define MPU_AP_PL1RW_PL0NA (0x1 << 8) @@ -47,7 +51,7 @@ #define MPU_PROBE_REGION 0 #define MPU_BG_REGION 1 #define MPU_RAM_REGION 2 -#define MPU_VECTORS_REGION 3 +#define MPU_ROM_REGION 3 /* Maximum number of regions Linux is interested in */ #define MPU_MAX_REGIONS 16 @@ -65,13 +69,23 @@ struct mpu_rgn { }; struct mpu_rgn_info { - u32 mpuir; + unsigned int used; struct mpu_rgn rgns[MPU_MAX_REGIONS]; }; extern struct mpu_rgn_info mpu_rgn_info; -#endif /* __ASSEMBLY__ */ +#ifdef CONFIG_ARM_MPU + +extern void __init adjust_lowmem_bounds_mpu(void); +extern void __init mpu_setup(void); -#endif /* CONFIG_ARM_MPU */ +#else + +static inline void adjust_lowmem_bounds_mpu(void) {} +static inline void mpu_setup(void) {} + +#endif /* !CONFIG_ARM_MPU */ + +#endif /* __ASSEMBLY__ */ #endif diff --git a/arch/arm/include/asm/processor.h b/arch/arm/include/asm/processor.h index c3d5fc124a05..338cbe0a18ef 100644 --- a/arch/arm/include/asm/processor.h +++ b/arch/arm/include/asm/processor.h @@ -47,15 +47,24 @@ struct thread_struct { #define INIT_THREAD { } -#ifdef CONFIG_MMU -#define nommu_start_thread(regs) do { } while (0) -#else -#define nommu_start_thread(regs) regs->ARM_r10 = current->mm->start_data -#endif - #define start_thread(regs,pc,sp) \ ({ \ + unsigned long r7, r8, r9; \ + \ + if (IS_ENABLED(CONFIG_BINFMT_ELF_FDPIC)) { \ + r7 = regs->ARM_r7; \ + r8 = regs->ARM_r8; \ + r9 = regs->ARM_r9; \ + } \ memset(regs->uregs, 0, sizeof(regs->uregs)); \ + if (IS_ENABLED(CONFIG_BINFMT_ELF_FDPIC) && \ + current->personality & FDPIC_FUNCPTRS) { \ + regs->ARM_r7 = r7; \ + regs->ARM_r8 = r8; \ + regs->ARM_r9 = r9; \ + regs->ARM_r10 = current->mm->start_data; \ + } else if (!IS_ENABLED(CONFIG_MMU)) \ + regs->ARM_r10 = current->mm->start_data; \ if (current->personality & ADDR_LIMIT_32BIT) \ regs->ARM_cpsr = USR_MODE; \ else \ @@ -65,7 +74,6 @@ struct thread_struct { regs->ARM_cpsr |= PSR_ENDSTATE; \ regs->ARM_pc = pc & ~1; /* pc */ \ regs->ARM_sp = sp; /* sp */ \ - nommu_start_thread(regs); \ }) /* Forward declaration, a strange C thing */ diff --git a/arch/arm/include/asm/smp.h b/arch/arm/include/asm/smp.h index 3d6dc8b460e4..709a55989cb0 100644 --- a/arch/arm/include/asm/smp.h +++ b/arch/arm/include/asm/smp.h @@ -60,7 +60,7 @@ asmlinkage void secondary_start_kernel(void); */ struct secondary_data { union { - unsigned long mpu_rgn_szr; + struct mpu_rgn_info *mpu_rgn_info; u64 pgdir; }; unsigned long swapper_pg_dir; diff --git a/arch/arm/include/asm/ucontext.h b/arch/arm/include/asm/ucontext.h index 3f0d95ab14b8..5c5e62cb304b 100644 --- a/arch/arm/include/asm/ucontext.h +++ b/arch/arm/include/asm/ucontext.h @@ -3,6 +3,7 @@ #define _ASMARM_UCONTEXT_H #include <asm/fpstate.h> +#include <asm/user.h> /* * struct sigcontext only has room for the basic registers, but struct diff --git a/arch/arm/include/asm/v7m.h b/arch/arm/include/asm/v7m.h index e6d9e29fcae4..634e77107425 100644 --- a/arch/arm/include/asm/v7m.h +++ b/arch/arm/include/asm/v7m.h @@ -58,6 +58,16 @@ #define V7M_SCB_CCSIDR 0x80 /* Cache size ID register */ #define V7M_SCB_CSSELR 0x84 /* Cache size selection register */ +/* Memory-mapped MPU registers for M-class */ +#define MPU_TYPE 0x90 +#define MPU_CTRL 0x94 +#define MPU_CTRL_ENABLE 1 +#define MPU_CTRL_PRIVDEFENA (1 << 2) + +#define MPU_RNR 0x98 +#define MPU_RBAR 0x9c +#define MPU_RASR 0xa0 + /* Cache opeartions */ #define V7M_SCB_ICIALLU 0x250 /* I-cache invalidate all to PoU */ #define V7M_SCB_ICIMVAU 0x258 /* I-cache invalidate by MVA to PoU */ diff --git a/arch/arm/include/uapi/asm/ptrace.h b/arch/arm/include/uapi/asm/ptrace.h index b67cda536c25..3287d790c83c 100644 --- a/arch/arm/include/uapi/asm/ptrace.h +++ b/arch/arm/include/uapi/asm/ptrace.h @@ -32,6 +32,10 @@ #define PTRACE_SETVFPREGS 28 #define PTRACE_GETHBPREGS 29 #define PTRACE_SETHBPREGS 30 +#define PTRACE_GETFDPIC 31 + +#define PTRACE_GETFDPIC_EXEC 0 +#define PTRACE_GETFDPIC_INTERP 1 /* * PSR bits diff --git a/arch/arm/include/uapi/asm/unistd.h b/arch/arm/include/uapi/asm/unistd.h index 39b2ad997e91..93ecf8aa4fe5 100644 --- a/arch/arm/include/uapi/asm/unistd.h +++ b/arch/arm/include/uapi/asm/unistd.h @@ -36,5 +36,6 @@ #define __ARM_NR_usr26 (__ARM_NR_BASE+3) #define __ARM_NR_usr32 (__ARM_NR_BASE+4) #define __ARM_NR_set_tls (__ARM_NR_BASE+5) +#define __ARM_NR_get_tls (__ARM_NR_BASE+6) #endif /* _UAPI__ASM_ARM_UNISTD_H */ diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile index 499f978fb1fd..b59ac4bf82b8 100644 --- a/arch/arm/kernel/Makefile +++ b/arch/arm/kernel/Makefile @@ -88,6 +88,11 @@ head-y := head$(MMUEXT).o obj-$(CONFIG_DEBUG_LL) += debug.o obj-$(CONFIG_EARLY_PRINTK) += early_printk.o +# This is executed very early using a temporary stack when no memory allocator +# nor global data is available. Everything has to be allocated on the stack. +CFLAGS_head-inflate-data.o := $(call cc-option,-Wframe-larger-than=10240) +obj-$(CONFIG_XIP_DEFLATED_DATA) += head-inflate-data.o + obj-$(CONFIG_ARM_VIRT_EXT) += hyp-stub.o AFLAGS_hyp-stub.o :=-Wa,-march=armv7-a ifeq ($(CONFIG_ARM_PSCI),y) diff --git a/arch/arm/kernel/asm-offsets.c b/arch/arm/kernel/asm-offsets.c index 608008229c7d..f369ece99958 100644 --- a/arch/arm/kernel/asm-offsets.c +++ b/arch/arm/kernel/asm-offsets.c @@ -23,11 +23,13 @@ #include <asm/mach/arch.h> #include <asm/thread_info.h> #include <asm/memory.h> +#include <asm/mpu.h> #include <asm/procinfo.h> #include <asm/suspend.h> #include <asm/vdso_datapage.h> #include <asm/hardware/cache-l2x0.h> #include <linux/kbuild.h> +#include "signal.h" /* * Make sure that the compiler and target are compatible. @@ -112,6 +114,9 @@ int main(void) DEFINE(SVC_ADDR_LIMIT, offsetof(struct svc_pt_regs, addr_limit)); DEFINE(SVC_REGS_SIZE, sizeof(struct svc_pt_regs)); BLANK(); + DEFINE(SIGFRAME_RC3_OFFSET, offsetof(struct sigframe, retcode[3])); + DEFINE(RT_SIGFRAME_RC3_OFFSET, offsetof(struct rt_sigframe, sig.retcode[3])); + BLANK(); #ifdef CONFIG_CACHE_L2X0 DEFINE(L2X0_R_PHY_BASE, offsetof(struct l2x0_regs, phy_base)); DEFINE(L2X0_R_AUX_CTRL, offsetof(struct l2x0_regs, aux_ctrl)); @@ -183,5 +188,15 @@ int main(void) #ifdef CONFIG_VDSO DEFINE(VDSO_DATA_SIZE, sizeof(union vdso_data_store)); #endif + BLANK(); +#ifdef CONFIG_ARM_MPU + DEFINE(MPU_RNG_INFO_RNGS, offsetof(struct mpu_rgn_info, rgns)); + DEFINE(MPU_RNG_INFO_USED, offsetof(struct mpu_rgn_info, used)); + + DEFINE(MPU_RNG_SIZE, sizeof(struct mpu_rgn)); + DEFINE(MPU_RGN_DRBAR, offsetof(struct mpu_rgn, drbar)); + DEFINE(MPU_RGN_DRSR, offsetof(struct mpu_rgn, drsr)); + DEFINE(MPU_RGN_DRACR, offsetof(struct mpu_rgn, dracr)); +#endif return 0; } diff --git a/arch/arm/kernel/atags_parse.c b/arch/arm/kernel/atags_parse.c index 98fbfd235ac8..c10a3e8ee998 100644 --- a/arch/arm/kernel/atags_parse.c +++ b/arch/arm/kernel/atags_parse.c @@ -196,11 +196,8 @@ setup_machine_tags(phys_addr_t __atags_pointer, unsigned int machine_nr) break; } - if (!mdesc) { - early_print("\nError: unrecognized/unsupported machine ID" - " (r1 = 0x%08x).\n\n", machine_nr); - dump_machine_table(); /* does not return */ - } + if (!mdesc) + return NULL; if (__atags_pointer) tags = phys_to_virt(__atags_pointer); diff --git a/arch/arm/kernel/debug.S b/arch/arm/kernel/debug.S index 0a498cb3fad8..b795dc2408c0 100644 --- a/arch/arm/kernel/debug.S +++ b/arch/arm/kernel/debug.S @@ -55,7 +55,9 @@ ENDPROC(printhex4) ENTRY(printhex2) mov r1, #2 -printhex: adr r2, hexbuf +printhex: adr r2, hexbuf_rel + ldr r3, [r2] + add r2, r2, r3 add r3, r2, r1 mov r1, #0 strb r1, [r3] @@ -71,7 +73,11 @@ printhex: adr r2, hexbuf b printascii ENDPROC(printhex2) -hexbuf: .space 16 + .pushsection .bss +hexbuf_addr: .space 16 + .popsection + .align +hexbuf_rel: .long hexbuf_addr - . .ltorg @@ -79,25 +85,28 @@ hexbuf: .space 16 ENTRY(printascii) addruart_current r3, r1, r2 - b 2f -1: waituart r2, r3 - senduart r1, r3 - busyuart r2, r3 - teq r1, #'\n' - moveq r1, #'\r' - beq 1b -2: teq r0, #0 +1: teq r0, #0 ldrneb r1, [r0], #1 teqne r1, #0 - bne 1b - ret lr + reteq lr +2: teq r1, #'\n' + bne 3f + mov r1, #'\r' + waituart r2, r3 + senduart r1, r3 + busyuart r2, r3 + mov r1, #'\n' +3: waituart r2, r3 + senduart r1, r3 + busyuart r2, r3 + b 1b ENDPROC(printascii) ENTRY(printch) addruart_current r3, r1, r2 mov r1, r0 mov r0, #0 - b 1b |