Commit 367b0df1 authored by Linus Torvalds's avatar Linus Torvalds

Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm

Pull ARM updates from Russell King:

 - StrongARM SA1111 updates to modernise and remove cruft

 - Add StrongARM gpio drivers for board GPIOs

 - Verify size of zImage is what we expect to avoid issues with
   appended DTB

 - nommu updates from Vladimir Murzin

 - page table read-write-execute checking from Jinbum Park

 - Broadcom Brahma-B15 cache updates from Florian Fainelli

 - Avoid failure with kprobes test caused by inappropriately
   placed kprobes

 - Remove __memzero optimisation (which was incorrectly being
   used directly by some drivers)

* 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: (32 commits)
  ARM: 8745/1: get rid of __memzero()
  ARM: 8744/1: don't discard memblock for kexec
  ARM: 8743/1: bL_switcher: add MODULE_LICENSE tag
  ARM: 8742/1: Always use REFCOUNT_FULL
  ARM: 8741/1: B15: fix unused label warnings
  ARM: 8740/1: NOMMU: Make sure we do not hold stale data in mem[] array
  ARM: 8739/1: NOMMU: Setup VBAR/Hivecs for secondaries cores
  ARM: 8738/1: Disable CONFIG_DEBUG_VIRTUAL for NOMMU
  ARM: 8737/1: mm: dump: add checking for writable and executable
  ARM: 8736/1: mm: dump: make the page table dumping seq_file
  ARM: 8735/1: mm: dump: make page table dumping reusable
  ARM: sa1100/neponset: add GPIO drivers for control and modem registers
  ARM: sa1100/assabet: add BCR/BSR GPIO driver
  ARM: 8734/1: mm: idmap: Mark variables as ro_after_init
  ARM: 8733/1: hw_breakpoint: Mark variables as __ro_after_init
  ARM: 8732/1: NOMMU: Allow userspace to access background MPU region
  ARM: 8727/1: MAINTAINERS: Update brcmstb entries to cover B15 code
  ARM: 8728/1: B15: Register reboot notifier for KEXEC
  ARM: 8730/1: B15: Add suspend/resume hooks
  ARM: 8726/1: B15: Add CPU hotplug awareness
  ...
parents 44644391 3a175cdf
...@@ -2855,6 +2855,8 @@ S: Maintained ...@@ -2855,6 +2855,8 @@ S: Maintained
F: arch/arm/mach-bcm/*brcmstb* F: arch/arm/mach-bcm/*brcmstb*
F: arch/arm/boot/dts/bcm7*.dts* F: arch/arm/boot/dts/bcm7*.dts*
F: drivers/bus/brcmstb_gisb.c F: drivers/bus/brcmstb_gisb.c
F: arch/arm/mm/cache-b15-rac.c
F: arch/arm/include/asm/hardware/cache-b15-rac.h
N: brcmstb N: brcmstb
BROADCOM BMIPS CPUFREQ DRIVER BROADCOM BMIPS CPUFREQ DRIVER
......
...@@ -3,8 +3,8 @@ config ARM ...@@ -3,8 +3,8 @@ config ARM
bool bool
default y default y
select ARCH_CLOCKSOURCE_DATA select ARCH_CLOCKSOURCE_DATA
select ARCH_DISCARD_MEMBLOCK if !HAVE_ARCH_PFN_VALID select ARCH_DISCARD_MEMBLOCK if !HAVE_ARCH_PFN_VALID && !KEXEC
select ARCH_HAS_DEBUG_VIRTUAL select ARCH_HAS_DEBUG_VIRTUAL if MMU
select ARCH_HAS_DEVMEM_IS_ALLOWED select ARCH_HAS_DEVMEM_IS_ALLOWED
select ARCH_HAS_ELF_RANDOMIZE select ARCH_HAS_ELF_RANDOMIZE
select ARCH_HAS_SET_MEMORY select ARCH_HAS_SET_MEMORY
...@@ -100,6 +100,7 @@ config ARM ...@@ -100,6 +100,7 @@ config ARM
select OLD_SIGACTION select OLD_SIGACTION
select OLD_SIGSUSPEND3 select OLD_SIGSUSPEND3
select PERF_USE_VMALLOC select PERF_USE_VMALLOC
select REFCOUNT_FULL
select RTC_LIB select RTC_LIB
select SYS_SUPPORTS_APM_EMULATION select SYS_SUPPORTS_APM_EMULATION
# Above selects are sorted alphabetically; please add new ones # Above selects are sorted alphabetically; please add new ones
...@@ -1526,12 +1527,10 @@ config THUMB2_KERNEL ...@@ -1526,12 +1527,10 @@ config THUMB2_KERNEL
bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K
default y if CPU_THUMBONLY default y if CPU_THUMBONLY
select ARM_ASM_UNIFIED
select ARM_UNWIND select ARM_UNWIND
help help
By enabling this option, the kernel will be compiled in By enabling this option, the kernel will be compiled in
Thumb-2 mode. A compiler/assembler that understand the unified Thumb-2 mode.
ARM-Thumb syntax is needed.
If unsure, say N. If unsure, say N.
...@@ -1566,9 +1565,6 @@ config THUMB2_AVOID_R_ARM_THM_JUMP11 ...@@ -1566,9 +1565,6 @@ config THUMB2_AVOID_R_ARM_THM_JUMP11
Unless you are sure your tools don't have this problem, say Y. Unless you are sure your tools don't have this problem, say Y.
config ARM_ASM_UNIFIED
bool
config ARM_PATCH_IDIV config ARM_PATCH_IDIV
bool "Runtime patch udiv/sdiv instructions into __aeabi_{u}idiv()" bool "Runtime patch udiv/sdiv instructions into __aeabi_{u}idiv()"
depends on CPU_32v7 && !XIP_KERNEL depends on CPU_32v7 && !XIP_KERNEL
......
...@@ -3,10 +3,14 @@ menu "Kernel hacking" ...@@ -3,10 +3,14 @@ menu "Kernel hacking"
source "lib/Kconfig.debug" source "lib/Kconfig.debug"
config ARM_PTDUMP config ARM_PTDUMP_CORE
def_bool n
config ARM_PTDUMP_DEBUGFS
bool "Export kernel pagetable layout to userspace via debugfs" bool "Export kernel pagetable layout to userspace via debugfs"
depends on DEBUG_KERNEL depends on DEBUG_KERNEL
depends on MMU depends on MMU
select ARM_PTDUMP_CORE
select DEBUG_FS select DEBUG_FS
---help--- ---help---
Say Y here if you want to show the kernel pagetable layout in a Say Y here if you want to show the kernel pagetable layout in a
...@@ -16,6 +20,33 @@ config ARM_PTDUMP ...@@ -16,6 +20,33 @@ config ARM_PTDUMP
kernel. kernel.
If in doubt, say "N" If in doubt, say "N"
config DEBUG_WX
bool "Warn on W+X mappings at boot"
select ARM_PTDUMP_CORE
---help---
Generate a warning if any W+X mappings are found at boot.
This is useful for discovering cases where the kernel is leaving
W+X mappings after applying NX, as such mappings are a security risk.
Look for a message in dmesg output like this:
arm/mm: Checked W+X mappings: passed, no W+X pages found.
or like this, if the check failed:
arm/mm: Checked W+X mappings: FAILED, <N> W+X pages found.
Note that even if the check fails, your kernel is possibly
still fine, as W+X mappings are not a security hole in
themselves, what they do is that they make the exploitation
of other unfixed kernel bugs easier.
There is no runtime or memory usage effect of this option
once the kernel has booted up - it's a one time check.
If in doubt, say "Y".
# RMK wants arm kernels compiled with frame pointers or stack unwinding. # RMK wants arm kernels compiled with frame pointers or stack unwinding.
# If you know what you are doing and are willing to live without stack # If you know what you are doing and are willing to live without stack
# traces, you can get a slightly smaller kernel by setting this option to # traces, you can get a slightly smaller kernel by setting this option to
......
...@@ -115,9 +115,11 @@ ifeq ($(CONFIG_ARM_UNWIND),y) ...@@ -115,9 +115,11 @@ ifeq ($(CONFIG_ARM_UNWIND),y)
CFLAGS_ABI +=-funwind-tables CFLAGS_ABI +=-funwind-tables
endif endif
# Accept old syntax despite ".syntax unified"
AFLAGS_NOWARN :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W)
ifeq ($(CONFIG_THUMB2_KERNEL),y) ifeq ($(CONFIG_THUMB2_KERNEL),y)
AFLAGS_AUTOIT :=$(call as-option,-Wa$(comma)-mimplicit-it=always,-Wa$(comma)-mauto-it) AFLAGS_AUTOIT :=$(call as-option,-Wa$(comma)-mimplicit-it=always,-Wa$(comma)-mauto-it)
AFLAGS_NOWARN :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W)
CFLAGS_ISA :=-mthumb $(AFLAGS_AUTOIT) $(AFLAGS_NOWARN) CFLAGS_ISA :=-mthumb $(AFLAGS_AUTOIT) $(AFLAGS_NOWARN)
AFLAGS_ISA :=$(CFLAGS_ISA) -Wa$(comma)-mthumb AFLAGS_ISA :=$(CFLAGS_ISA) -Wa$(comma)-mthumb
# Work around buggy relocation from gas if requested: # Work around buggy relocation from gas if requested:
...@@ -125,7 +127,7 @@ ifeq ($(CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11),y) ...@@ -125,7 +127,7 @@ ifeq ($(CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11),y)
KBUILD_CFLAGS_MODULE +=-fno-optimize-sibling-calls KBUILD_CFLAGS_MODULE +=-fno-optimize-sibling-calls
endif endif
else else
CFLAGS_ISA :=$(call cc-option,-marm,) CFLAGS_ISA :=$(call cc-option,-marm,) $(AFLAGS_NOWARN)
AFLAGS_ISA :=$(CFLAGS_ISA) AFLAGS_ISA :=$(CFLAGS_ISA)
endif endif
......
...@@ -130,8 +130,3 @@ void *memset(void *s, int c, size_t count) ...@@ -130,8 +130,3 @@ void *memset(void *s, int c, size_t count)
*xs++ = c; *xs++ = c;
return s; return s;
} }
void __memzero(void *s, size_t count)
{
memset(s, 0, count);
}
...@@ -56,6 +56,7 @@ SECTIONS ...@@ -56,6 +56,7 @@ SECTIONS
.rodata : { .rodata : {
*(.rodata) *(.rodata)
*(.rodata.*) *(.rodata.*)
*(.data.rel.ro)
} }
.piggydata : { .piggydata : {
*(.piggydata) *(.piggydata)
...@@ -101,6 +102,12 @@ SECTIONS ...@@ -101,6 +102,12 @@ SECTIONS
* this symbol allows further debug in the near future. * this symbol allows further debug in the near future.
*/ */
.image_end (NOLOAD) : { .image_end (NOLOAD) : {
/*
* EFI requires that the image is aligned to 512 bytes, and appended
* DTB requires that we know where the end of the image is. Ensure
* that both are satisfied by ensuring that there are no additional
* sections emitted into the decompressor image.
*/
_edata_real = .; _edata_real = .;
} }
...@@ -128,3 +135,4 @@ SECTIONS ...@@ -128,3 +135,4 @@ SECTIONS
.stab.indexstr 0 : { *(.stab.indexstr) } .stab.indexstr 0 : { *(.stab.indexstr) }
.comment 0 : { *(.comment) } .comment 0 : { *(.comment) }
} }
ASSERT(_edata_real == _edata, "error: zImage file size is incorrect");
...@@ -57,3 +57,7 @@ static struct miscdevice bL_switcher_device = { ...@@ -57,3 +57,7 @@ static struct miscdevice bL_switcher_device = {
&bL_switcher_fops &bL_switcher_fops
}; };
module_misc_device(bL_switcher_device); module_misc_device(bL_switcher_device);
MODULE_AUTHOR("Nicolas Pitre <nico@linaro.org>");
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("big.LITTLE switcher dummy user interface");
This diff is collapsed.
...@@ -10,11 +10,10 @@ ...@@ -10,11 +10,10 @@
#include <linux/interrupt.h> #include <linux/interrupt.h>
#define __exception __attribute__((section(".exception.text")))
#ifdef CONFIG_FUNCTION_GRAPH_TRACER #ifdef CONFIG_FUNCTION_GRAPH_TRACER
#define __exception_irq_entry __irq_entry #define __exception_irq_entry __irq_entry
#else #else
#define __exception_irq_entry __exception #define __exception_irq_entry
#endif #endif
#endif /* __ASM_ARM_EXCEPTION_H */ #endif /* __ASM_ARM_EXCEPTION_H */
...@@ -117,6 +117,10 @@ ...@@ -117,6 +117,10 @@
# endif # endif
#endif #endif
#if defined(CONFIG_CACHE_B15_RAC)
# define MULTI_CACHE 1
#endif
#if defined(CONFIG_CPU_V7M) #if defined(CONFIG_CPU_V7M)
# define MULTI_CACHE 1 # define MULTI_CACHE 1
#endif #endif
......
#ifndef __ASM_ARM_HARDWARE_CACHE_B15_RAC_H
#define __ASM_ARM_HARDWARE_CACHE_B15_RAC_H
#ifndef __ASSEMBLY__
void b15_flush_kern_cache_all(void);
#endif
#endif
...@@ -15,33 +15,6 @@ ...@@ -15,33 +15,6 @@
#include <mach/bitfield.h> #include <mach/bitfield.h>
/*
* The SA1111 is always located at virtual 0xf4000000, and is always
* "native" endian.
*/
#define SA1111_VBASE 0xf4000000
/* Don't use these! */
#define SA1111_p2v( x ) ((x) - SA1111_BASE + SA1111_VBASE)
#define SA1111_v2p( x ) ((x) - SA1111_VBASE + SA1111_BASE)
#ifndef __ASSEMBLY__
#define _SA1111(x) ((x) + sa1111->resource.start)
#endif
#define sa1111_writel(val,addr) __raw_writel(val, addr)
#define sa1111_readl(addr) __raw_readl(addr)
/*
* 26 bits of the SA-1110 address bus are available to the SA-1111.
* Use these when feeding target addresses to the DMA engines.
*/
#define SA1111_ADDR_WIDTH (26)
#define SA1111_ADDR_MASK ((1<<SA1111_ADDR_WIDTH)-1)
#define SA1111_DMA_ADDR(x) ((x)&SA1111_ADDR_MASK)
/* /*
* Don't ask the (SAC) DMA engines to move less than this amount. * Don't ask the (SAC) DMA engines to move less than this amount.
*/ */
...@@ -417,7 +390,7 @@ struct sa1111_dev { ...@@ -417,7 +390,7 @@ struct sa1111_dev {
struct resource res; struct resource res;
void __iomem *mapbase; void __iomem *mapbase;
unsigned int skpcr_mask; unsigned int skpcr_mask;
unsigned int irq[6]; unsigned int hwirq[6];
u64 dma_mask; u64 dma_mask;
}; };
...@@ -431,9 +404,6 @@ struct sa1111_driver { ...@@ -431,9 +404,6 @@ struct sa1111_driver {
unsigned int devid; unsigned int devid;
int (*probe)(struct sa1111_dev *); int (*probe)(struct sa1111_dev *);
int (*remove)(struct sa1111_dev *); int (*remove)(struct sa1111_dev *);
int (*suspend)(struct sa1111_dev *, pm_message_t);
int (*resume)(struct sa1111_dev *);
void (*shutdown)(struct sa1111_dev *);
}; };
#define SA1111_DRV(_d) container_of((_d), struct sa1111_driver, drv) #define SA1111_DRV(_d) container_of((_d), struct sa1111_driver, drv)
......
...@@ -88,6 +88,7 @@ ...@@ -88,6 +88,7 @@
#else /* CONFIG_MMU */ #else /* CONFIG_MMU */
#ifndef __ASSEMBLY__ #ifndef __ASSEMBLY__
extern unsigned long setup_vectors_base(void);
extern unsigned long vectors_base; extern unsigned long vectors_base;
#define VECTORS_BASE vectors_base #define VECTORS_BASE vectors_base
#endif #endif
......
/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (C) 2014 ARM Ltd. */
#ifndef __ASM_PTDUMP_H
#define __ASM_PTDUMP_H
#ifdef CONFIG_ARM_PTDUMP_CORE
#include <linux/mm_types.h>
#include <linux/seq_file.h>
struct addr_marker {
unsigned long start_address;
char *name;
};
struct ptdump_info {
struct mm_struct *mm;
const struct addr_marker *markers;
unsigned long base_addr;
};
void ptdump_walk_pgd(struct seq_file *s, struct ptdump_info *info);
#ifdef CONFIG_ARM_PTDUMP_DEBUGFS
int ptdump_debugfs_register(struct ptdump_info *info, const char *name);
#else
static inline int ptdump_debugfs_register(struct ptdump_info *info,
const char *name)
{
return 0;
}
#endif /* CONFIG_ARM_PTDUMP_DEBUGFS */
void ptdump_check_wx(void);
#endif /* CONFIG_ARM_PTDUMP_CORE */
#ifdef CONFIG_DEBUG_WX
#define debug_checkwx() ptdump_check_wx()
#else
#define debug_checkwx() do { } while (0)
#endif
#endif /* __ASM_PTDUMP_H */
...@@ -6,4 +6,25 @@ ...@@ -6,4 +6,25 @@
extern char _exiprom[]; extern char _exiprom[];
extern char __idmap_text_start[];
extern char __idmap_text_end[];
extern char __entry_text_start[];
extern char __entry_text_end[];
extern char __hyp_idmap_text_start[];
extern char __hyp_idmap_text_end[];
static inline bool in_entry_text(unsigned long addr)
{
return memory_contains(__entry_text_start, __entry_text_end,
(void *)addr, 1);
}
static inline bool in_idmap_text(unsigned long addr)
{
void *a = (void *)addr;
return memory_contains(__idmap_text_start, __idmap_text_end, a, 1) ||
memory_contains(__hyp_idmap_text_start, __hyp_idmap_text_end,
a, 1);
}
#endif /* _ASM_ARM_SECTIONS_H */ #endif /* _ASM_ARM_SECTIONS_H */
...@@ -39,18 +39,4 @@ static inline void *memset64(uint64_t *p, uint64_t v, __kernel_size_t n) ...@@ -39,18 +39,4 @@ static inline void *memset64(uint64_t *p, uint64_t v, __kernel_size_t n)
return __memset64(p, v, n * 8, v >> 32); return __memset64(p, v, n * 8, v >> 32);
} }
extern void __memzero(void *ptr, __kernel_size_t n);
#define memset(p,v,n) \
({ \
void *__p = (p); size_t __n = n; \
if ((__n) != 0) { \
if (__builtin_constant_p((v)) && (v) == 0) \
__memzero((__p),(__n)); \
else \
memset((__p),(v),(__n)); \
} \
(__p); \
})
#endif #endif
...@@ -28,18 +28,6 @@ static inline int __in_irqentry_text(unsigned long ptr) ...@@ -28,18 +28,6 @@ static inline int __in_irqentry_text(unsigned long ptr)
ptr < (unsigned long)&__irqentry_text_end; ptr < (unsigned long)&__irqentry_text_end;
} }
static inline int in_exception_text(unsigned long ptr)
{
extern char __exception_text_start[];
extern char __exception_text_end[];
int in;
in = ptr >= (unsigned long)&__exception_text_start &&
ptr < (unsigned long)&__exception_text_end;
return in ? : __in_irqentry_text(ptr);
}
extern void __init early_trap_init(void *); extern void __init early_trap_init(void *);
extern void dump_backtrace_entry(unsigned long where, unsigned long from, unsigned long frame); extern void dump_backtrace_entry(unsigned long where, unsigned long from, unsigned long frame);
extern void ptrace_break(struct task_struct *tsk, struct pt_regs *regs); extern void ptrace_break(struct task_struct *tsk, struct pt_regs *regs);
......
...@@ -20,8 +20,10 @@ ...@@ -20,8 +20,10 @@
#ifndef __ASM_UNIFIED_H #ifndef __ASM_UNIFIED_H
#define __ASM_UNIFIED_H #define __ASM_UNIFIED_H
#if defined(__ASSEMBLY__) && defined(CONFIG_ARM_ASM_UNIFIED) #if defined(__ASSEMBLY__)
.syntax unified .syntax unified
#else
__asm__(".syntax unified");
#endif #endif
#ifdef CONFIG_CPU_V7M #ifdef CONFIG_CPU_V7M
...@@ -64,77 +66,4 @@ ...@@ -64,77 +66,4 @@
#endif /* CONFIG_THUMB2_KERNEL */ #endif /* CONFIG_THUMB2_KERNEL */
#ifndef CONFIG_ARM_ASM_UNIFIED
/*
* If the unified assembly syntax isn't used (in ARM mode), these
* macros expand to an empty string
*/
#ifdef __ASSEMBLY__
.macro it, cond
.endm
.macro itt, cond
.endm
.macro ite, cond
.endm
.macro ittt, cond
.endm
.macro itte, cond
.endm
.macro itet, cond
.endm
.macro itee, cond
.endm
.macro itttt, cond
.endm
.macro ittte, cond
.endm
.macro ittet, cond
.endm
.macro ittee, cond
.endm
.macro itett, cond
.endm
.macro itete, cond
.endm
.macro iteet, cond
.endm
.macro iteee, cond
.endm
#else /* !__ASSEMBLY__ */
__asm__(
" .macro it, cond\n"
" .endm\n"
" .macro itt, cond\n"
" .endm\n"
" .macro ite, cond\n"
" .endm\n"
" .macro ittt, cond\n"
" .endm\n"
" .macro itte, cond\n"
" .endm\n"
" .macro itet, cond\n"
" .endm\n"
" .macro itee, cond\n"
" .endm\n"
" .macro itttt, cond\n"
" .endm\n"
" .macro ittte, cond\n"
" .endm\n"
" .macro ittet, cond\n"
" .endm\n"
" .macro ittee, cond\n"
" .endm\n"
" .macro itett, cond\n"
" .endm\n"
" .macro itete, cond\n"
" .endm\n"
" .macro iteet, cond\n"
" .endm\n"
" .macro iteee, cond\n"
" .endm\n");
#endif /* __ASSEMBLY__ */
#endif /* CONFIG_ARM_ASM_UNIFIED */
#endif /* !__ASM_UNIFIED_H */ #endif /* !__ASM_UNIFIED_H */
...@@ -92,7 +92,6 @@ EXPORT_SYMBOL(__memset64); ...@@ -92,7 +92,6 @@ EXPORT_SYMBOL(__memset64);
EXPORT_SYMBOL(memcpy); EXPORT_SYMBOL(memcpy);
EXPORT_SYMBOL(memmove); EXPORT_SYMBOL(memmove);
EXPORT_SYMBOL(memchr); EXPORT_SYMBOL(memchr);
EXPORT_SYMBOL(__memzero);
EXPORT_SYMBOL(mmioset); EXPORT_SYMBOL(mmioset);
EXPORT_SYMBOL(mmiocpy); EXPORT_SYMBOL(mmiocpy);
......
...@@ -82,11 +82,7 @@ ...@@ -82,11 +82,7 @@
#endif #endif
.endm .endm
#ifdef CONFIG_KPROBES .section .entry.text,"ax",%progbits
.section .kprobes.text,"ax",%progbits
#else
.text
#endif
/* /*
* Invalid mode handlers * Invalid mode handlers
......
...@@ -37,6 +37,7 @@ saved_pc .req lr ...@@ -37,6 +37,7 @@ saved_pc .req lr
#define TRACE(x...) #define TRACE(x...)
#endif #endif
.section .entry.text,"ax",%progbits
.align 5 .align 5
#if !(IS_ENABLED(CONFIG_TRACE_IRQFLAGS) || IS_ENABLED(CONFIG_CONTEXT_TRACKING)) #if !(IS_ENABLED(CONFIG_TRACE_IRQFLAGS) || IS_ENABLED(CONFIG_CONTEXT_TRACKING))
/* /*
......
...@@ -105,8 +105,9 @@ __mmap_switched: ...@@ -105,8 +105,9 @@ __mmap_switched:
ARM( ldmia r4!, {r0, r1, sp} ) ARM( ldmia r4!, {r0, r1, sp} )
THUMB( ldmia r4!, {r0, r1, r3} ) THUMB( ldmia r4!, {r0, r1, r3} )
THUMB( mov sp, r3 ) THUMB( mov sp, r3 )
sub r1, r1, r0 sub r2, r1, r0
bl __memzero @ clear .bss mov r1, #0
bl memset @ clear .bss
ldmia r4, {r0, r1, r2, r3} ldmia r4, {r0, r1, r2, r3}
str r9, [r0] @ Save processor ID str r9, [r0] @ Save processor ID
......
...@@ -44,17 +44,17 @@ static DEFINE_PER_CPU(struct perf_event *, bp_on_reg[ARM_MAX_BRP]); ...@@ -44,17 +44,17 @@ static DEFINE_PER_CPU(struct perf_event *, bp_on_reg[ARM_MAX_BRP]);
static DEFINE_PER_CPU(struct perf_event *, wp_on_reg[ARM_MAX_WRP]); static DEFINE_PER_CPU(struct perf_event *, wp_on_reg[ARM_MAX_WRP]);
/* Number of BRP/WRP registers on this CPU. */ /* Number of BRP/WRP registers on this CPU. */
static int core_num_brps; static int core_num_brps __ro_after_init;
static int core_num_wrps; static int core_num_wrps __ro_after_init;
/* Debug architecture version. */ /* Debug architecture version. */
static u8 debug_arch; static u8 debug_arch __ro_after_init;
/* Does debug architecture support OS Save and Restore? */ /* Does debug architecture support OS Save and Restore? */
static bool has_ossr; static bool has_ossr __ro_after_init;
/* Maximum supported watchpoint length. */ /* Maximum supported watchpoint length. */
static u8 max_watchpoint_len; static u8 max_watchpoint_len __ro_after_init;
#define READ_WB_REG_CASE(OP2, M, VAL) \ #define READ_WB_REG_CASE(OP2, M, VAL) \
case ((OP2 << 4) + M): \ case ((OP2 << 4) + M): \
......
...@@ -379,6 +379,9 @@ asmlinkage void secondary_start_kernel(void) ...@@ -379,6 +379,9 @@ asmlinkage void secondary_start_kernel(void)
cpu_init(); cpu_init();
#ifndef CONFIG_MMU
setup_vectors_base();
#endif
pr_debug("CPU%u: Booted secondary processor\n", cpu); pr_debug("CPU%u: Booted secondary processor\n", cpu);
preempt_disable(); preempt_disable();
......
...@@ -3,6 +3,7 @@ ...@@ -3,6 +3,7 @@
#include <linux/sched/debug.h> #include <linux/sched/debug.h>
#include <linux/stacktrace.h> #include <linux/stacktrace.h>
#include <asm/sections.h>
#include <asm/stacktrace.h> #include <asm/stacktrace.h>
#include <asm/traps.h> #include <asm/traps.h>
...@@ -63,7 +64,6 @@ EXPORT_SYMBOL(walk_stackframe); ...@@ -63,7 +64,6 @@ EXPORT_SYMBOL(walk_stackframe);
#ifdef CONFIG_STACKTRACE #ifdef CONFIG_STACKTRACE
struct stack_trace_data { struct stack_trace_data {
struct stack_trace *trace; struct stack_trace *trace;
unsigned long last_pc;
unsigned int no_sched_functions; unsigned int no_sched_functions;
unsigned int skip; unsigned int skip;
}; };
...@@ -87,16 +87,7 @@ static int save_trace(struct stackframe *frame, void *d) ...@@ -87,16 +87,7 @@ static int save_trace(struct stackframe *frame, void *d)
if (trace->nr_entries >= trace->max_entries) if (trace->nr_entries >= trace->max_entries)
return 1; return 1;
/* if (!in_entry_text(frame->pc))
* in_exception_text() is designed to test if the PC is one of
* the functions which has an exception stack above it, but
* unfortunately what is in frame->pc is the return LR value,
* not the saved PC value. So, we need to track the previous
* frame PC value when doing this.
*/
addr = data->last_pc;
data->last_pc = frame->pc;
if (!in_exception_text(addr))
return 0; return 0;
regs = (struct pt_regs *)frame->sp; regs = (struct pt_regs *)frame->sp;
...@@ -114,7 +105,6 @@ static noinline void __save_stack_trace(struct task_struct *tsk, ...@@ -114,7 +105,6 @@ static noinline void __save_stack_trace(struct task_struct *tsk,
struct stackframe frame; struct stackframe frame;
data.trace = trace; data.trace = trace;
data.last_pc = ULONG_MAX;
data.skip = trace->skip; data.skip = trace->skip;
data.no_sched_functions = nosched; data.no_sched_functions = nosched;
......
...@@ -72,7 +72,7 @@ void dump_backtrace_entry(unsigned long where, unsigned long from, unsigned long ...@@ -72,7 +72,7 @@ void dump_backtrace_entry(unsigned long where, unsigned long from, unsigned long
printk("Function entered at [<%08lx>] from [<%08lx>]\n", where, from); printk("Function entered at [<%08lx>] from [<%08lx>]\n", where, from);
#endif #endif
if (in_exception_text(where)) if (in_entry_text(from))
dump_mem("", "Exception stack", frame + 4, frame + 4 + sizeof(struct pt_regs)); dump_mem("", "Exception stack", frame + 4, frame + 4 + sizeof(struct pt_regs));
} }
...@@ -433,7 +433,7 @@ static int call_undef_hook(struct pt_regs *regs, unsigned int instr) ...@@ -433,7 +433,7 @@ static int call_undef_hook(struct pt_regs *regs, unsigned int instr)
return fn ? fn(regs, instr) : 1; return fn ? fn(regs, instr) : 1;
} }
asmlinkage void __exception do_undefinstr(struct pt_regs *regs) asmlinkage void do_undefinstr(struct pt_regs *regs)
{ {
unsigned int instr; unsigned int instr;
siginfo_t info; siginfo_t info;
......
...@@ -96,9 +96,9 @@ SECTIONS ...@@ -96,9 +96,9 @@ SECTIONS
.text : { /* Real text segment */ .text : { /* Real text segment */
_stext = .; /* Text and read-only data */ _stext = .; /* Text and read-only data */
IDMAP_TEXT IDMAP_TEXT
__exception_text_start = .; __entry_text_start = .;
*(.exception.text) *(.entry.text)
__exception_text_end = .; __entry_text_end = .;
IRQENTRY_TEXT IRQENTRY_TEXT
TEXT_TEXT TEXT_TEXT
SCHED_TEXT SCHED_TEXT
......
...@@ -105,9 +105,9 @@ SECTIONS ...@@ -105,9 +105,9 @@ SECTIONS
.text : { /* Real text segment */ .text : { /* Real text segment */
_stext = .; /* Text and read-only data */ _stext = .; /* Text and read-only data */
IDMAP_TEXT IDMAP_TEXT
__exception_text_start = .; __entry_text_start = .;
*(.exception.text) *(.entry.text)
__exception_text_end = .; __entry_text_end = .;
IRQENTRY_TEXT IRQENTRY_TEXT
SOFTIRQENTRY_TEXT SOFTIRQENTRY_TEXT
TEXT_TEXT TEXT_TEXT
......
...@@ -8,7 +8,7 @@ ...@@ -8,7 +8,7 @@
lib-y := backtrace.o changebit.o csumipv6.o csumpartial.o \ lib-y := backtrace.o changebit.o csumipv6.o csumpartial.o \
csumpartialcopy.o csumpartialcopyuser.o clearbit.o \ csumpartialcopy.o csumpartialcopyuser.o clearbit.o \
delay.o delay-loop.o findbit.o memchr.o memcpy.o \ delay.o delay-loop.o findbit.o memchr.o memcpy.o \
memmove.o memset.o memzero.o setbit.o \ memmove.o memset.o setbit.o \
strchr.o strrchr.o \ strchr.o strrchr.o \
testchangebit.o testclearbit.o testsetbit.o \ testchangebit.o testclearbit.o testsetbit.o \
ashldi3.o ashrdi3.o lshrdi3.o muldi3.o \ ashldi3.o ashrdi3.o lshrdi3.o muldi3.o \
......
/*
* linux/arch/arm/lib/memzero.S
*
* Copyright (C) 1995-2000 Russell King
*
* 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.
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
#include <asm/unwind.h>
.text
.align 5
.word 0
/*
* Align the pointer in r0. r3 contains the number of bytes that we are
* mis-aligned by, and r1 is the number of bytes. If r1 < 4, then we
* don't bother; we use byte stores instead.
*/
UNWIND( .fnstart )
1: subs r1, r1, #4 @ 1 do we have enough
blt 5f @ 1 bytes to align with?
cmp r3, #2 @ 1
strltb r2, [r0], #1 @ 1
strleb r2, [r0], #1 @ 1
strb r2, [r0], #1 @ 1
add r1, r1, r3 @ 1 (r1 = r1 - (4 - r3))
/*
* The pointer is now aligned and the length is adjusted. Try doing the
* memzero again.
*/
ENTRY(__memzero)
mov r2, #0 @ 1
ands r3, r0, #3 @ 1 unaligned?
bne 1b @ 1
/*
* r3 = 0, and we know that the pointer in r0 is aligned to a word boundary.
*/
cmp r1, #16 @ 1 we can skip this chunk if we
blt 4f @ 1 have < 16 bytes
#if ! CALGN(1)+0
/*
* We need an extra register for this loop - save the return address and
* use the LR
*/
str lr, [sp, #-4]! @ 1
UNWIND( .fnend )
UNWIND( .fnstart )
UNWIND( .save {lr} )
mov ip, r2 @ 1
mov lr, r2 @ 1
3: subs r1, r1, #64 @ 1 write 32 bytes out per loop
stmgeia r0!, {r2, r3, ip, lr} @ 4
stmgeia r0!, {r2, r3, ip, lr} @ 4
stmgeia r0!, {r2, r3, ip, lr} @ 4
stmgeia r0!, {r2, r3, ip, lr} @ 4
bgt 3b @ 1
ldmeqfd sp!, {pc} @ 1/2 quick exit
/*
* No need to correct the count; we're only testing bits from now on
*/
tst r1, #32 @ 1
stmneia r0!, {r2, r3, ip, lr} @ 4
stmneia r0!, {r2, r3, ip, lr} @ 4
tst r1, #16 @ 1 16 bytes or more?
stmneia r0!, {r2, r3, ip, lr} @ 4
ldr lr, [sp], #4 @ 1
UNWIND( .fnend )
#else
/*
* This version aligns the destination pointer in order to write
* whole cache lines at once.
*/
stmfd sp!, {r4-r7, lr}
UNWIND( .fnend )
UNWIND( .fnstart )
UNWIND( .save {r4-r7, lr} )
mov r4, r2
mov r5, r2
mov r6, r2
mov r7, r2
mov ip, r2
mov lr, r2
cmp r1, #96
andgts ip, r0, #31
ble 3f
rsb ip, ip, #32
sub r1, r1, ip
movs ip, ip, lsl #(32 - 4)
stmcsia r0!, {r4, r5, r6, r7}
stmmiia r0!, {r4, r5}
movs ip, ip, lsl #2
strcs r2, [r0], #4
3: subs r1, r1, #64
stmgeia r0!, {r2-r7, ip, lr}
stmgeia r0!, {r2-r7, ip, lr}
bgt 3b
ldmeqfd sp!, {r4-r7, pc}
tst r1, #32
stmneia r0!, {r2-r7, ip, lr}
tst r1, #16
stmneia r0!, {r4-r7}
ldmfd sp!, {r4-r7, lr}
UNWIND( .fnend )
#endif
UNWIND( .fnstart )
4: tst r1, #8 @ 1 8 bytes or more?
stmneia r0!, {r2, r3} @ 2
tst r1, #4 @ 1 4 bytes or more?
strne r2, [r0], #4 @ 1
/*
* When we get here, we've got less than 4 bytes to zero. We
* may have an unaligned pointer as well.
*/
5: tst r1, #2 @ 1 2 bytes or more?
strneb r2, [r0], #1 @ 1
strneb r2, [r0], #1 @ 1
tst r1, #1 @ 1 a byte left over
strneb r2, [r0], #1 @ 1
ret lr @ 1
UNWIND( .fnend )
ENDPROC(__memzero)
...@@ -5,6 +5,7 @@ menu "SA11x0 Implementations" ...@@ -5,6 +5,7 @@ menu "SA11x0 Implementations"
config SA1100_ASSABET config SA1100_ASSABET
bool "Assabet" bool "Assabet"
select ARM_SA1110_CPUFREQ select ARM_SA1110_CPUFREQ
select GPIO_REG
help help
Say Y here if you are using the Intel(R) StrongARM(R) SA-1110 Say Y here if you are using the Intel(R) StrongARM(R) SA-1110
Microprocessor Development Board (also known as the Assabet). Microprocessor Development Board (also known as the Assabet).
......
...@@ -13,6 +13,7 @@ ...@@ -13,6 +13,7 @@
#include <linux/kernel.h> #include <linux/kernel.h>
#include <linux/module.h> #include <linux/module.h>
#include <linux/errno.h> #include <linux/errno.h>
#include <linux/gpio/gpio-reg.h>
#include <linux/ioport.h> #include <linux/ioport.h>
#include <linux/platform_data/sa11x0-serial.h> #include <linux/platform_data/sa11x0-serial.h>
#include <linux/serial_core.h> #include <linux/serial_core.h>
...@@ -61,20 +62,45 @@ ...@@ -61,20 +62,45 @@
unsigned long SCR_value = ASSABET_SCR_INIT; unsigned long SCR_value = ASSABET_SCR_INIT;
EXPORT_SYMBOL(SCR_value); EXPORT_SYMBOL(SCR_value);
static unsigned long BCR_value = ASSABET_BCR_DB1110; static struct gpio_chip *assabet_bcr_gc;
static const char *assabet_names[] = {
"cf_pwr", "cf_gfx_reset", "nsoft_reset", "irda_fsel",
"irda_md0", "irda_md1", "stereo_loopback", "ncf_bus_on",
"audio_pwr_on", "light_pwr_on", "lcd16data", "lcd_pwr_on",
"rs232_on", "nred_led", "ngreen_led", "vib_on",
"com_dtr", "com_rts", "radio_wake_mod", "i2c_enab",
"tvir_enab", "qmute", "radio_pwr_on", "spkr_off",
"rs232_valid", "com_dcd", "com_cts", "com_dsr",
"radio_cts", "radio_dsr", "radio_dcd", "radio_ri",
};
/* The old deprecated interface */
void ASSABET_BCR_frob(unsigned int mask, unsigned int val) void ASSABET_BCR_frob(unsigned int mask, unsigned int val)
{ {
unsigned long flags; unsigned long m = mask, v = val;
local_irq_save(flags); assabet_bcr_gc->set_multiple(assabet_bcr_gc, &m, &v);
BCR_value = (BCR_value & ~mask) | val;
ASSABET_BCR = BCR_value;
local_irq_restore(flags);
} }
EXPORT_SYMBOL(ASSABET_BCR_frob); EXPORT_SYMBOL(ASSABET_BCR_frob);
static int __init assabet_init_gpio(void __iomem *reg, u32 def_val)
{
struct gpio_chip *gc;
writel_relaxed(def_val, reg);
gc = gpio_reg_init(NULL, reg, -1, 32, "assabet", 0xff000000, def_val,
assabet_names, NULL, NULL);
if (IS_ERR(gc))
return PTR_ERR(gc);
assabet_bcr_gc = gc;
return gc->base;
}
/* /*
* The codec reset goes to three devices, so we need to release * The codec reset goes to three devices, so we need to release
* the rest when any one of these requests it. However, that * the rest when any one of these requests it. However, that
...@@ -146,7 +172,7 @@ static void adv7171_write(unsigned reg, unsigned val) ...@@ -146,7 +172,7 @@ static void adv7171_write(unsigned reg, unsigned val)
unsigned gpdr = GPDR; unsigned gpdr = GPDR;
unsigned gplr = GPLR; unsigned gplr = GPLR;
ASSABET_BCR = BCR_value | ASSABET_BCR_AUDIO_ON; ASSABET_BCR_frob(ASSABET_BCR_AUDIO_ON, ASSABET_BCR_AUDIO_ON);
udelay(100); udelay(100);
GPCR = SDA | SCK | MOD; /* clear L3 mode to ensure UDA1341 doesn't respond */ GPCR = SDA | SCK | MOD; /* clear L3 mode to ensure UDA1341 doesn't respond */
...@@ -457,14 +483,6 @@ static void __init assabet_init(void) ...@@ -457,14 +483,6 @@ static void __init assabet_init(void)
sa11x0_ppc_configure_mcp(); sa11x0_ppc_configure_mcp();
if (machine_has_neponset()) { if (machine_has_neponset()) {
/*
* Angel sets this, but other bootloaders may not.
*
* This must precede any driver calls to BCR_set()
* or BCR_clear().
*/
ASSABET_BCR = BCR_value = ASSABET_BCR_DB1111;
#ifndef CONFIG_ASSABET_NEPONSET #ifndef CONFIG_ASSABET_NEPONSET
printk( "Warning: Neponset detected but full support " printk( "Warning: Neponset detected but full support "
"hasn't been configured in the kernel\n" ); "hasn't been configured in the kernel\n" );
...@@ -748,12 +766,31 @@ static int __init assabet_leds_init(void) ...@@ -748,12 +766,31 @@ static int __init assabet_leds_init(void)
fs_initcall(assabet_leds_init); fs_initcall(assabet_leds_init);
#endif #endif
void __init assabet_init_irq(void)
{
u32 def_val;
sa1100_init_irq();
if (machine_has_neponset())
def_val = ASSABET_BCR_DB1111;
else
def_val = ASSABET_BCR_DB1110;
/*
* Angel sets this, but other bootloaders may not.
*
* This must precede any driver calls to BCR_set() or BCR_clear().
*/
assabet_init_gpio((void *)&ASSABET_BCR, def_val);
}
MACHINE_START(ASSABET, "Intel-Assabet") MACHINE_START(ASSABET, "Intel-Assabet")
.atag_offset = 0x100, .atag_offset = 0x100,
.fixup = fixup_assabet, .fixup = fixup_assabet,
.map_io = assabet_map_io, .map_io = assabet_map_io,
.nr_irqs = SA1100_NR_IRQS, .nr_irqs = SA1100_NR_IRQS,
.init_irq = sa1100_init_irq, .init_irq = assabet_init_irq,
.init_time = sa1100_timer_init, .init_time = sa1100_timer_init,
.init_machine = assabet_init, .init_machine = assabet_init,
.init_late = sa11x0_init_late, .init_late = sa11x0_init_late,
......
...@@ -3,6 +3,8 @@ ...@@ -3,6 +3,8 @@
* linux/arch/arm/mach-sa1100/neponset.c * linux/arch/arm/mach-sa1100/neponset.c
*/ */
#include <linux/err.h> #include <linux/err.h>
#include <linux/gpio/driver.h>
#include <linux/gpio/gpio-reg.h>
#include <linux/init.h> #include <linux/init.h>
#include <linux/ioport.h> #include <linux/ioport.h>
#include <linux/irq.h> #include <linux/irq.h>
...@@ -45,10 +47,13 @@ ...@@ -45,10 +47,13 @@
#define IRR_USAR (1 << 1) #define IRR_USAR (1 << 1)
#define IRR_SA1111 (1 << 2) #define IRR_SA1111 (1 << 2)
#define NCR_NGPIO 7
#define MDM_CTL0_RTS1 (1 << 0) #define MDM_CTL0_RTS1 (1 << 0)
#define MDM_CTL0_DTR1 (1 << 1) #define MDM_CTL0_DTR1 (1 << 1)
#define MDM_CTL0_RTS2 (1 << 2) #define MDM_CTL0_RTS2 (1 << 2)
#define MDM_CTL0_DTR2 (1 << 3) #define MDM_CTL0_DTR2 (1 << 3)
#define MDM_CTL0_NGPIO 4
#define MDM_CTL1_CTS1 (1 << 0) #define MDM_CTL1_CTS1 (1 << 0)
#define MDM_CTL1_DSR1 (1 << 1) #define MDM_CTL1_DSR1 (1 << 1)
...@@ -56,80 +61,87 @@ ...@@ -56,80 +61,87 @@
#define MDM_CTL1_CTS2 (1 << 3) #define MDM_CTL1_CTS2 (1 << 3)
#define MDM_CTL1_DSR2 (1 << 4) #define MDM_CTL1_DSR2 (1 << 4)
#define MDM_CTL1_DCD2 (1 << 5) #define MDM_CTL1_DCD2 (1 << 5)
#define MDM_CTL1_NGPIO 6
#define AUD_SEL_1341 (1 << 0) #define AUD_SEL_1341 (1 << 0)
#define AUD_MUTE_1341 (1 << 1) #define AUD_MUTE_1341 (1 << 1)
#define AUD_NGPIO 2
extern void sa1110_mb_disable(void); extern void sa1110_mb_disable(void);
#define to_neponset_gpio_chip(x) container_of(x, struct neponset_gpio_chip, gc)
static const char *neponset_ncr_names[] = {
"gp01_off", "tp_power", "ms_power", "enet_osc",
"spi_kb_wk_up", "a0vpp", "a1vpp"
};
static const char *neponset_mdmctl0_names[] = {
"rts3", "dtr3", "rts1", "dtr1",
};
static const char *neponset_mdmctl1_names[] = {
"cts3", "dsr3", "dcd3", "cts1", "dsr1", "dcd1"
};
static const char *neponset_aud_names[] = {
"sel_1341", "mute_1341",
};
struct neponset_drvdata { struct neponset_drvdata {
void __iomem *base; void __iomem *base;
struct platform_device *sa1111; struct platform_device *sa1111;
struct platform_device *smc91x; struct platform_device *smc91x;
unsigned irq_base; unsigned irq_base;
#ifdef CONFIG_PM_SLEEP struct gpio_chip *gpio[4];
u32 ncr0;
u32 mdm_ctl_0;
#endif
}; };
static void __iomem *nep_base; static struct neponset_drvdata *nep;
void neponset_ncr_frob(unsigned int mask, unsigned int val) void neponset_ncr_frob(unsigned int mask, unsigned int val)
{ {
void __iomem *base = nep_base; struct neponset_drvdata *n = nep;
unsigned long m = mask, v = val;
if (base) {
unsigned long flags; if (nep)
unsigned v; n->gpio[0]->set_multiple(n->gpio[0], &m, &v);
else
local_irq_save(flags); WARN(1, "nep unset\n");
v = readb_relaxed(base + NCR_0);
writeb_relaxed((v & ~mask) | val, base + NCR_0);
local_irq_restore(flags);
} else {
WARN(1, "nep_base unset\n");
}
} }
EXPORT_SYMBOL(neponset_ncr_frob); EXPORT_SYMBOL(neponset_ncr_frob);
static void neponset_set_mctrl(struct uart_port *port, u_int mctrl) static void neponset_set_mctrl(struct uart_port *port, u_int mctrl)
{ {
void __iomem *base = nep_base; struct neponset_drvdata *n = nep;
u_int mdm_ctl0; unsigned long mask, val = 0;
if (!base) if (!n)
return; return;
mdm_ctl0 = readb_relaxed(base + MDM_CTL_0);
if (port->mapbase == _Ser1UTCR0) { if (port->mapbase == _Ser1UTCR0) {
if (mctrl & TIOCM_RTS) mask = MDM_CTL0_RTS2 | MDM_CTL0_DTR2;
mdm_ctl0 &= ~MDM_CTL0_RTS2;
else if (!(mctrl & TIOCM_RTS))
mdm_ctl0 |= MDM_CTL0_RTS2; val |= MDM_CTL0_RTS2;
if (mctrl & TIOCM_DTR) if (!(mctrl & TIOCM_DTR))
mdm_ctl0 &= ~MDM_CTL0_DTR2; val |= MDM_CTL0_DTR2;
else
mdm_ctl0 |= MDM_CTL0_DTR2;
} else if (port->mapbase == _Ser3UTCR0) { } else if (port->mapbase == _Ser3UTCR0) {
if (mctrl & TIOCM_RTS) mask = MDM_CTL0_RTS1 | MDM_CTL0_DTR1;
mdm_ctl0 &= ~MDM_CTL0_RTS1;
else if (!(mctrl & TIOCM_RTS))
mdm_ctl0 |= MDM_CTL0_RTS1; val |= MDM_CTL0_RTS1;
if (mctrl & TIOCM_DTR) if (!(mctrl & TIOCM_DTR))
mdm_ctl0 &= ~MDM_CTL0_DTR1; val |= MDM_CTL0_DTR1;
else
mdm_ctl0 |= MDM_CTL0_DTR1;
} }
writeb_relaxed(mdm_ctl0, base + MDM_CTL_0); n->gpio[1]->set_multiple(n->gpio[1], &mask, &val);
} }
static u_int neponset_get_mctrl(struct uart_port *port) static u_int neponset_get_mctrl(struct uart_port *port)
{ {
void __iomem *base = nep_base; void __iomem *base = nep->base;
u_int ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR; u_int ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR;
u_int mdm_ctl1; u_int mdm_ctl1;
...@@ -231,6 +243,22 @@ static struct irq_chip nochip = { ...@@ -231,6 +243,22 @@ static struct irq_chip nochip = {
.irq_unmask = nochip_noop, .irq_unmask = nochip_noop,
}; };
static int neponset_init_gpio(struct gpio_chip **gcp,
struct device *dev, const char *label, void __iomem *reg,
unsigned num, bool in, const char *const * names)
{
struct gpio_chip *gc;
gc = gpio_reg_init(dev, reg, -1, num, label, in ? 0xffffffff : 0,
readl_relaxed(reg), names, NULL, NULL);
if (IS_ERR(gc))
return PTR_ERR(gc);
*gcp = gc;
return 0;
}
static struct sa1111_platform_data sa1111_info = { static struct sa1111_platform_data sa1111_info = {
.disable_devs = SA1111_DEVID_PS2_MSE, .disable_devs = SA1111_DEVID_PS2_MSE,
}; };
...@@ -274,7 +302,7 @@ static int neponset_probe(struct platform_device *dev) ...@@ -274,7 +302,7 @@ static int neponset_probe(struct platform_device *dev)
}; };
int ret, irq; int ret, irq;
if (nep_base) if (nep)
return -EBUSY; return -EBUSY;
irq = ret = platform_get_irq(dev, 0); irq = ret = platform_get_irq(dev, 0);
...@@ -330,6 +358,22 @@ static int neponset_probe(struct platform_device *dev) ...@@ -330,6 +358,22 @@ static int neponset_probe(struct platform_device *dev)
irq_set_irq_type(irq, IRQ_TYPE_EDGE_RISING); irq_set_irq_type(irq, IRQ_TYPE_EDGE_RISING);
irq_set_chained_handler_and_data(irq, neponset_irq_handler, d); irq_set_chained_handler_and_data(irq, neponset_irq_handler, d);
/* Disable GPIO 0/1 drivers so the buttons work on the Assabet */
writeb_relaxed(NCR_GP01_OFF, d->base + NCR_0);
neponset_init_gpio(&d->gpio[0], &dev->dev, "neponset-ncr",
d->base + NCR_0, NCR_NGPIO, false,
neponset_ncr_names);
neponset_init_gpio(&d->gpio[1], &dev->dev, "neponset-mdm-ctl0",
d->base + MDM_CTL_0, MDM_CTL0_NGPIO, false,
neponset_mdmctl0_names);
neponset_init_gpio(&d->gpio[2], &dev->dev, "neponset-mdm-ctl1",
d->base + MDM_CTL_1, MDM_CTL1_NGPIO, true,
neponset_mdmctl1_names);
neponset_init_gpio(&d->gpio[3], &dev->dev, "neponset-aud-ctl",
d->base + AUD_CTL, AUD_NGPIO, false,
neponset_aud_names);
/* /*
* We would set IRQ_GPIO25 to be a wake-up IRQ, but unfortunately * We would set IRQ_GPIO25 to be a wake-up IRQ, but unfortunately
* something on the Neponset activates this IRQ on sleep (eth?) * something on the Neponset activates this IRQ on sleep (eth?)
...@@ -340,16 +384,13 @@ static int neponset_probe(struct platform_device *dev) ...@@ -340,16 +384,13 @@ static int neponset_probe(struct platform_device *dev)
dev_info(&dev->dev, "Neponset daughter board, providing IRQ%u-%u\n", dev_info(&dev->dev, "Neponset daughter board, providing IRQ%u-%u\n",
d->irq_base, d->irq_base + NEP_IRQ_NR - 1); d->irq_base, d->irq_base + NEP_IRQ_NR - 1);
nep_base = d->base; nep = d;
sa1100_register_uart_fns(&neponset_port_fns); sa1100_register_uart_fns(&neponset_port_fns);
/* Ensure that the memory bus request/grant signals are setup */ /* Ensure that the memory bus request/grant signals are setup */
sa1110_mb_disable(); sa1110_mb_disable();
/* Disable GPIO 0/1 drivers so the buttons work on the Assabet */
writeb_relaxed(NCR_GP01_OFF, d->base + NCR_0);
sa1111_resources[0].parent = sa1111_res; sa1111_resources[0].parent = sa1111_res;
sa1111_resources[1].start = d->irq_base + NEP_IRQ_SA1111; sa1111_resources[1].start = d->irq_base + NEP_IRQ_SA1111;
sa1111_resources[1].end = d->irq_base + NEP_IRQ_SA1111; sa1111_resources[1].end = d->irq_base + NEP_IRQ_SA1111;
...@@ -385,7 +426,7 @@ static int neponset_remove(struct platform_device *dev) ...@@ -385,7 +426,7 @@ static int neponset_remove(struct platform_device *dev)
platform_device_unregister(d->smc91x); platform_device_unregister(d->smc91x);
irq_set_chained_handler(irq, NULL); irq_set_chained_handler(irq, NULL);
irq_free_descs(d->irq_base, NEP_IRQ_NR); irq_free_descs(d->irq_base, NEP_IRQ_NR);
nep_base = NULL; nep = NULL;
iounmap(d->base); iounmap(d->base);
kfree(d); kfree(d);
...@@ -393,30 +434,22 @@ static int neponset_remove(struct platform_device *dev) ...@@ -393,30 +434,22 @@ static int neponset_remove(struct platform_device *dev)
} }
#ifdef CONFIG_PM_SLEEP #ifdef CONFIG_PM_SLEEP
static int neponset_suspend(struct device *dev)
{
struct neponset_drvdata *d = dev_get_drvdata(dev);
d->ncr0 = readb_relaxed(d->base + NCR_0);
d->mdm_ctl_0 = readb_relaxed(d->base + MDM_CTL_0);
return 0;
}
static int neponset_resume(struct device *dev) static int neponset_resume(struct device *dev)
{ {
struct neponset_drvdata *d = dev_get_drvdata(dev); struct neponset_drvdata *d = dev_get_drvdata(dev);
int i, ret = 0;
writeb_relaxed(d->ncr0, d->base + NCR_0); for (i = 0; i < ARRAY_SIZE(d->gpio); i++) {
writeb_relaxed(d->mdm_ctl_0, d->base + MDM_CTL_0); ret = gpio_reg_resume(d->gpio[i]);
if (ret)
break;
}
return 0; return ret;
} }
static const struct dev_pm_ops neponset_pm_ops = { static const struct dev_pm_ops neponset_pm_ops = {
.suspend_noirq = neponset_suspend,
.resume_noirq = neponset_resume, .resume_noirq = neponset_resume,
.freeze_noirq = neponset_suspend,
.restore_noirq = neponset_resume, .restore_noirq = neponset_resume,
}; };
#define PM_OPS &neponset_pm_ops #define PM_OPS &neponset_pm_ops
......
...@@ -909,6 +909,14 @@ config OUTER_CACHE_SYNC ...@@ -909,6 +909,14 @@ config OUTER_CACHE_SYNC
The outer cache has a outer_cache_fns.sync function pointer The outer cache has a outer_cache_fns.sync function pointer
that can be used to drain the write buffer of the outer cache. that can be used to drain the write buffer of the outer cache.
config CACHE_B15_RAC
bool "Enable the Broadcom Brahma-B15 read-ahead cache controller"
depends on ARCH_BRCMSTB
default y
help
This option enables the Broadcom Brahma-B15 read-ahead cache
controller. If disabled, the read-ahead cache remains off.
config CACHE_FEROCEON_L2 config CACHE_FEROCEON_L2
bool "Enable the Feroceon L2 cache controller" bool "Enable the Feroceon L2 cache controller"
depends on ARCH_MV78XX0 || ARCH_MVEBU depends on ARCH_MV78XX0 || ARCH_MVEBU
......
...@@ -13,7 +13,8 @@ obj-y += nommu.o ...@@ -13,7 +13,8 @@ obj-y += nommu.o
obj-$(CONFIG_ARM_MPU) += pmsa-v7.o obj-$(CONFIG_ARM_MPU) += pmsa-v7.o
endif endif
obj-$(CONFIG_ARM_PTDUMP) += dump.o obj-$(CONFIG_ARM_PTDUMP_CORE) += dump.o
obj-$(CONFIG_ARM_PTDUMP_DEBUGFS) += ptdump_debugfs.o
obj-$(CONFIG_MODULES) += proc-syms.o obj-$(CONFIG_MODULES) += proc-syms.o
obj-$(CONFIG_DEBUG_VIRTUAL) += physaddr.o obj-$(CONFIG_DEBUG_VIRTUAL) += physaddr.o
...@@ -103,6 +104,7 @@ AFLAGS_proc-v6.o :=-Wa,-march=armv6 ...@@ -103,6 +104,7 @@ AFLAGS_proc-v6.o :=-Wa,-march=armv6
AFLAGS_proc-v7.o :=-Wa,-march=armv7-a AFLAGS_proc-v7.o :=-Wa,-march=armv7-a
obj-$(CONFIG_OUTER_CACHE) += l2c-common.o obj-$(CONFIG_OUTER_CACHE) += l2c-common.o
obj-$(CONFIG_CACHE_B15_RAC) += cache-b15-rac.o
obj-$(CONFIG_CACHE_FEROCEON_L2) += cache-feroceon-l2.o obj-$(CONFIG_CACHE_FEROCEON_L2) += cache-feroceon-l2.o
obj-$(CONFIG_CACHE_L2X0) += cache-l2x0.o l2c-l2x0-resume.o obj-$(CONFIG_CACHE_L2X0) += cache-l2x0.o l2c-l2x0-resume.o
obj-$(CONFIG_CACHE_L2X0_PMU) += cache-l2x0-pmu.o obj-$(CONFIG_CACHE_L2X0_PMU) += cache-l2x0-pmu.o
......
This diff is collapsed.
...@@ -15,6 +15,7 @@ ...@@ -15,6 +15,7 @@
#include <asm/assembler.h> #include <asm/assembler.h>
#include <asm/errno.h> #include <asm/errno.h>
#include <asm/unwind.h> #include <asm/unwind.h>
#include <asm/hardware/cache-b15-rac.h>
#include "proc-macros.S" #include "proc-macros.S"
...@@ -446,3 +447,23 @@ ENDPROC(v7_dma_unmap_area) ...@@ -446,3 +447,23 @@ ENDPROC(v7_dma_unmap_area)
@ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S) @ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)
define_cache_functions v7 define_cache_functions v7
/* The Broadcom Brahma-B15 read-ahead cache requires some modifications
* to the v7_cache_fns, we only override the ones we need
*/
#ifndef CONFIG_CACHE_B15_RAC
globl_equ b15_flush_kern_cache_all, v7_flush_kern_cache_all
#endif
globl_equ b15_flush_icache_all, v7_flush_icache_all
globl_equ b15_flush_kern_cache_louis, v7_flush_kern_cache_louis
globl_equ b15_flush_user_cache_all, v7_flush_user_cache_all
globl_equ b15_flush_user_cache_range, v7_flush_user_cache_range
globl_equ b15_coherent_kern_range, v7_coherent_kern_range
globl_equ b15_coherent_user_range, v7_coherent_user_range
globl_equ b15_flush_kern_dcache_area, v7_flush_kern_dcache_area
globl_equ b15_dma_map_area, v7_dma_map_area
globl_equ b15_dma_unmap_area, v7_dma_unmap_area
globl_equ b15_dma_flush_range, v7_dma_flush_range
define_cache_functions b15
...@@ -21,11 +21,7 @@ ...@@ -21,11 +21,7 @@
#include <asm/fixmap.h> #include <asm/fixmap.h>
#include <asm/memory.h> #include <asm/memory.h>
#include <asm/pgtable.h> #include <asm/pgtable.h>
#include <asm/ptdump.h>
struct addr_marker {
unsigned long start_address;
const char *name;
};
static struct addr_marker address_markers[] = { static struct addr_marker address_markers[] = {
{ MODULES_VADDR, "Modules" }, { MODULES_VADDR, "Modules" },
...@@ -38,12 +34,26 @@ static struct addr_marker address_markers[] = { ...@@ -38,12 +34,26 @@ static struct addr_marker address_markers[] = {
{ -1, NULL }, { -1, NULL },
}; };
#define pt_dump_seq_printf(m, fmt, args...) \
({ \
if (m) \
seq_printf(m, fmt, ##args); \
})
#define pt_dump_seq_puts(m, fmt) \
({ \
if (m) \
seq_printf(m, fmt); \
})
struct pg_state { struct pg_state {
struct seq_file *seq; struct seq_file *seq;
const struct addr_marker *marker; const struct addr_marker *marker;
unsigned long start_address; unsigned long start_address;
unsigned level; unsigned level;
u64 current_prot; u64 current_prot;
bool check_wx;
unsigned long wx_pages;
const char *current_domain; const char *current_domain;
}; };
...@@ -52,6 +62,8 @@ struct prot_bits { ...@@ -52,6 +62,8 @@ struct prot_bits {
u64 val; u64 val;
const char *set; const char *set;
const char *clear; const char *clear;
bool ro_bit;
bool nx_bit;
}; };
static const struct prot_bits pte_bits[] = { static const struct prot_bits pte_bits[] = {
...@@ -65,11 +77,13 @@ static const struct prot_bits pte_bits[] = { ...@@ -65,11 +77,13 @@ static const struct prot_bits pte_bits[] = {
.val = L_PTE_RDONLY, .val = L_PTE_RDONLY,
.set = "ro", .set = "ro",
.clear = "RW", .clear = "RW",
.ro_bit = true,
}, { }, {
.mask = L_PTE_XN, .mask = L_PTE_XN,
.val = L_PTE_XN, .val = L_PTE_XN,
.set = "NX", .set = "NX",
.clear = "x ", .clear = "x ",
.nx_bit = true,
}, { }, {
.mask = L_PTE_SHARED, .mask = L_PTE_SHARED,
.val = L_PTE_SHARED, .val = L_PTE_SHARED,
...@@ -133,11 +147,13 @@ static const struct prot_bits section_bits[] = { ...@@ -133,11 +147,13 @@ static const struct prot_bits section_bits[] = {
.val = L_PMD_SECT_RDONLY | PMD_SECT_AP2, .val = L_PMD_SECT_RDONLY | PMD_SECT_AP2,
.set = "ro", .set = "ro",
.clear = "RW", .clear = "RW",
.ro_bit = true,
#elif __LINUX_ARM_ARCH__ >= 6 #elif __LINUX_ARM_ARCH__ >= 6
{ {
.mask = PMD_SECT_APX | PMD_SECT_AP_READ | PMD_SECT_AP_WRITE, .mask = PMD_SECT_APX | PMD_SECT_AP_READ | PMD_SECT_AP_WRITE,
.val = PMD_SECT_APX | PMD_SECT_AP_WRITE, .val = PMD_SECT_APX | PMD_SECT_AP_WRITE,
.set = " ro", .set = " ro",
.ro_bit = true,
}, { }, {
.mask = PMD_SECT_APX | PMD_SECT_AP_READ | PMD_SECT_AP_WRITE, .mask = PMD_SECT_APX | PMD_SECT_AP_READ | PMD_SECT_AP_WRITE,
.val = PMD_SECT_AP_WRITE, .val = PMD_SECT_AP_WRITE,
...@@ -156,6 +172,7 @@ static const struct prot_bits section_bits[] = { ...@@ -156,6 +172,7 @@ static const struct prot_bits section_bits[] = {
.mask = PMD_SECT_AP_READ | PMD_SECT_AP_WRITE, .mask = PMD_SECT_AP_READ | PMD_SECT_AP_WRITE,
.val = 0, .val = 0,
.set = " ro", .set = " ro",
.ro_bit = true,
}, { }, {
.mask = PMD_SECT_AP_READ | PMD_SECT_AP_WRITE, .mask = PMD_SECT_AP_READ | PMD_SECT_AP_WRITE,
.val = PMD_SECT_AP_WRITE, .val = PMD_SECT_AP_WRITE,
...@@ -174,6 +191,7 @@ static const struct prot_bits section_bits[] = { ...@@ -174,6 +191,7 @@ static const struct prot_bits section_bits[] = {
.val = PMD_SECT_XN, .val = PMD_SECT_XN,
.set = "NX", .set = "NX",
.clear = "x ", .clear = "x ",
.nx_bit = true,
}, { }, {
.mask = PMD_SECT_S, .mask = PMD_SECT_S,
.val = PMD_SECT_S, .val = PMD_SECT_S,
...@@ -186,6 +204,8 @@ struct pg_level { ...@@ -186,6 +204,8 @@ struct pg_level {
const struct prot_bits *bits; const struct prot_bits *bits;
size_t num; size_t num;
u64 mask; u64 mask;
const struct prot_bits *ro_bit;
const struct prot_bits *nx_bit;
}; };
static struct pg_level pg_level[] = { static struct pg_level pg_level[] = {
...@@ -214,10 +234,27 @@ static void dump_prot(struct pg_state *st, const struct prot_bits *bits, size_t ...@@ -214,10 +234,27 @@ static void dump_prot(struct pg_state *st, const struct prot_bits *bits, size_t
s = bits->clear; s = bits->clear;
if (s) if (s)
seq_printf(st->seq, " %s", s); pt_dump_seq_printf(st->seq, " %s", s);
} }
} }
static void note_prot_wx(struct pg_state *st, unsigned long addr)
{
if (!st->check_wx)
return;
if ((st->current_prot & pg_level[st->level].ro_bit->mask) ==
pg_level[st->level].ro_bit->val)
return;
if ((st->current_prot & pg_level[st->level].nx_bit->mask) ==
pg_level[st->level].nx_bit->val)
return;
WARN_ONCE(1, "arm/mm: Found insecure W+X mapping at address %pS\n",
(void *)st->start_address);
st->wx_pages += (addr - st->start_address) / PAGE_SIZE;
}
static void note_page(struct pg_state *st, unsigned long addr, static void note_page(struct pg_state *st, unsigned long addr,
unsigned int level, u64 val, const char *domain) unsigned int level, u64 val, const char *domain)
{ {
...@@ -228,7 +265,7 @@ static void note_page(struct pg_state *st, unsigned long addr, ...@@ -228,7 +265,7 @@ static void note_page(struct pg_state *st, unsigned long addr,
st->level = level; st->level = level;
st->current_prot = prot; st->current_prot = prot;
st->current_domain = domain; st->current_domain = domain;
seq_printf(st->seq, "---[ %s ]---\n", st->marker->name); pt_dump_seq_printf(st->seq, "---[ %s ]---\n", st->marker->name);
} else if (prot != st->current_prot || level != st->level || } else if (prot != st->current_prot || level != st->level ||
domain != st->current_domain || domain != st->current_domain ||
addr >= st->marker[1].start_address) { addr >= st->marker[1].start_address) {
...@@ -236,7 +273,8 @@ static void note_page(struct pg_state *st, unsigned long addr, ...@@ -236,7 +273,8 @@ static void note_page(struct pg_state *st, unsigned long addr,
unsigned long delta; unsigned long delta;
if (st->current_prot) { if (st->current_prot) {
seq_printf(st->seq, "0x%08lx-0x%08lx ", note_prot_wx(st, addr);
pt_dump_seq_printf(st->seq, "0x%08lx-0x%08lx ",
st->start_address, addr); st->start_address, addr);
delta = (addr - st->start_address) >> 10; delta = (addr - st->start_address) >> 10;
...@@ -244,17 +282,19 @@ static void note_page(struct pg_state *st, unsigned long addr, ...@@ -244,17 +282,19 @@ static void note_page(struct pg_state *st, unsigned long addr,
delta >>= 10; delta >>= 10;
unit++; unit++;
} }
seq_printf(st->seq, "%9lu%c", delta, *unit); pt_dump_seq_printf(st->seq, "%9lu%c", delta, *unit);
if (st->current_domain) if (st->current_domain)
seq_printf(st->seq, " %s", st->current_domain); pt_dump_seq_printf(st->seq, " %s",
st->current_domain);
if (pg_level[st->level].bits) if (pg_level[st->level].bits)
dump_prot(st, pg_level[st->level].bits, pg_level[st->level].num); dump_prot(st, pg_level[st->level].bits, pg_level[st->level].num);
seq_printf(st->seq, "\n"); pt_dump_seq_printf(st->seq, "\n");
} }
if (addr >= st->marker[1].start_address) { if (addr >= st->marker[1].start_address) {
st->marker++; st->marker++;
seq_printf(st->seq, "---[ %s ]---\n", st->marker->name); pt_dump_seq_printf(st->seq, "---[ %s ]---\n",
st->marker->name);
} }
st->start_address = addr; st->start_address = addr;
st->current_prot = prot; st->current_prot = prot;
...@@ -335,61 +375,82 @@ static void walk_pud(struct pg_state *st, pgd_t *pgd, unsigned long start) ...@@ -335,61 +375,82 @@ static void walk_pud(struct pg_state *st, pgd_t *pgd, unsigned long start)
} }
} }
static void walk_pgd(struct seq_file *m) static void walk_pgd(struct pg_state *st, struct mm_struct *mm,
unsigned long start)
{ {
pgd_t *pgd = swapper_pg_dir; pgd_t *pgd = pgd_offset(mm, 0UL);
struct pg_state st;
unsigned long addr;
unsigned i; unsigned i;
unsigned long addr;
memset(&st, 0, sizeof(st));
st.seq = m;
st.marker = address_markers;
for (i = 0; i < PTRS_PER_PGD; i++, pgd++) { for (i = 0; i < PTRS_PER_PGD; i++, pgd++) {
addr = i * PGDIR_SIZE; addr = start + i * PGDIR_SIZE;
if (!pgd_none(*pgd)) { if (!pgd_none(*pgd)) {
walk_pud(&st, pgd, addr); walk_pud(st, pgd, addr);
} else { } else {
note_page(&st, addr, 1, pgd_val(*pgd), NULL); note_page(st, addr, 1, pgd_val(*pgd), NULL);
} }
} }
note_page(&st, 0, 0, 0, NULL);
} }
static int ptdump_show(struct seq_file *m, void *v) void ptdump_walk_pgd(struct seq_file *m, struct ptdump_info *info)
{ {
walk_pgd(m); struct pg_state st = {
return 0; .seq = m,
} .marker = info->markers,
.check_wx = false,
};
static int ptdump_open(struct inode *inode, struct file *file) walk_pgd(&st, info->mm, info->base_addr);
{ note_page(&st, 0, 0, 0, NULL);
return single_open(file, ptdump_show, NULL);
} }
static const struct file_operations ptdump_fops = { static void ptdump_initialize(void)
.open = ptdump_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int ptdump_init(void)
{ {
struct dentry *pe;
unsigned i, j; unsigned i, j;
for (i = 0; i < ARRAY_SIZE(pg_level); i++) for (i = 0; i < ARRAY_SIZE(pg_level); i++)
if (pg_level[i].bits) if (pg_level[i].bits)
for (j = 0; j < pg_level[i].num; j++) for (j = 0; j < pg_level[i].num; j++) {
pg_level[i].mask |= pg_level[i].bits[j].mask; pg_level[i].mask |= pg_level[i].bits[j].mask;
if (pg_level[i].bits[j].ro_bit)
pg_level[i].ro_bit = &pg_level[i].bits[j];
if (pg_level[i].bits[j].nx_bit)
pg_level[i].nx_bit = &pg_level[i].bits[j];
}
address_markers[2].start_address = VMALLOC_START; address_markers[2].start_address = VMALLOC_START;
}
static struct ptdump_info kernel_ptdump_info = {
.mm = &init_mm,
.markers = address_markers,
.base_addr = 0,
};
pe = debugfs_create_file("kernel_page_tables", 0400, NULL, NULL, void ptdump_check_wx(void)
&ptdump_fops); {
return pe ? 0 : -ENOMEM; struct pg_state st = {
.seq = NULL,
.marker = (struct addr_marker[]) {
{ 0, NULL},
{ -1, NULL},
},
.check_wx = true,
};
walk_pgd(&st, &init_mm, 0);
note_page(&st, 0, 0, 0, NULL);
if (st.wx_pages)
pr_warn("Checked W+X mappings: FAILED, %lu W+X pages found\n",
st.wx_pages);
else
pr_info("Checked W+X mappings: passed, no W+X pages found\n");
}
static int ptdump_init(void)
{
ptdump_initialize();
return ptdump_debugfs_register(&kernel_ptdump_info,
"kernel_page_tables");
} }
__initcall(ptdump_init); __initcall(ptdump_init);
...@@ -21,7 +21,6 @@ ...@@ -21,7 +21,6 @@
#include <linux/highmem.h> #include <linux/highmem.h>
#include <linux/perf_event.h> #include <linux/perf_event.h>
#include <asm/exception.h>
#include <asm/pgtable.h> #include <asm/pgtable.h>
#include <asm/system_misc.h> #include <asm/system_misc.h>
#include <asm/system_info.h> #include <asm/system_info.h>
...@@ -545,7 +544,7 @@ hook_fault_code(int nr, int (*fn)(unsigned long, unsigned int, struct pt_regs *) ...@@ -545,7 +544,7 @@ hook_fault_code(int nr, int (*fn)(unsigned long, unsigned int, struct pt_regs *)
/* /*
* Dispatch a data abort to the relevant handler. * Dispatch a data abort to the relevant handler.
*/ */
asmlinkage void __exception asmlinkage void
do_DataAbort(unsigned long addr, unsigned int fsr, struct pt_regs *regs) do_DataAbort(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
{ {
const struct fsr_info *inf = fsr_info + fsr_fs(fsr); const struct fsr_info *inf = fsr_info + fsr_fs(fsr);
...@@ -578,7 +577,7 @@ hook_ifault_code(int nr, int (*fn)(unsigned long, unsigned int, struct pt_regs * ...@@ -578,7 +577,7 @@ hook_ifault_code(int nr, int (*fn)(unsigned long, unsigned int, struct pt_regs *
ifsr_info[nr].name = name; ifsr_info[nr].name = name;
} }
asmlinkage void __exception asmlinkage void
do_PrefetchAbort(unsigned long addr, unsigned int ifsr, struct pt_regs *regs) do_PrefetchAbort(unsigned long addr, unsigned int ifsr, struct pt_regs *regs)
{ {
const struct fsr_info *inf = ifsr_info + fsr_fs(ifsr); const struct fsr_info *inf = ifsr_info + fsr_fs(ifsr);
......
...@@ -16,8 +16,8 @@ ...@@ -16,8 +16,8 @@
* are not supported on any CPU using the idmap tables as its current * are not supported on any CPU using the idmap tables as its current
* page tables. * page tables.
*/ */
pgd_t *idmap_pgd; pgd_t *idmap_pgd __ro_after_init;
long long arch_phys_to_idmap_offset; long long arch_phys_to_idmap_offset __ro_after_init;
#ifdef CONFIG_ARM_LPAE #ifdef CONFIG_ARM_LPAE
static void idmap_add_pmd(pud_t *pud, unsigned long addr, unsigned long end, static void idmap_add_pmd(pud_t *pud, unsigned long addr, unsigned long end,
......
...@@ -36,6 +36,7 @@ ...@@ -36,6 +36,7 @@
#include <asm/system_info.h> #include <asm/system_info.h>
#include <asm/tlb.h> #include <asm/tlb.h>
#include <asm/fixmap.h> #include <asm/fixmap.h>
#include <asm/ptdump.h>
#include <asm/mach/arch.h> #include <asm/mach/arch.h>
#include <asm/mach/map.h> #include <asm/mach/map.h>
...@@ -738,6 +739,7 @@ static int __mark_rodata_ro(void *unused) ...@@ -738,6 +739,7 @@ static int __mark_rodata_ro(void *unused)
void mark_rodata_ro(void) void mark_rodata_ro(void)
{ {
stop_machine(__mark_rodata_ro, NULL, NULL); stop_machine(__mark_rodata_ro, NULL, NULL);
debug_checkwx();
} }
void set_kernel_text_rw(void) void set_kernel_text_rw(void)
......
...@@ -31,7 +31,7 @@ struct mpu_rgn_info mpu_rgn_info; ...@@ -31,7 +31,7 @@ struct mpu_rgn_info mpu_rgn_info;
#ifdef CONFIG_CPU_CP15 #ifdef CONFIG_CPU_CP15
#ifdef CONFIG_CPU_HIGH_VECTOR #ifdef CONFIG_CPU_HIGH_VECTOR
static unsigned long __init setup_vectors_base(void) unsigned long setup_vectors_base(void)
{ {
unsigned long reg = get_cr(); unsigned long reg = get_cr();
...@@ -57,7 +57,7 @@ static inline bool security_extensions_enabled(void) ...@@ -57,7 +57,7 @@ static inline bool security_extensions_enabled(void)
return 0; return 0;
} }
static unsigned long __init setup_vectors_base(void) unsigned long setup_vectors_base(void)
{ {
unsigned long base = 0, reg = get_cr(); unsigned long base = 0, reg = get_cr();
......
...@@ -6,6 +6,7 @@ ...@@ -6,6 +6,7 @@
#include <linux/bitops.h> #include <linux/bitops.h>
#include <linux/memblock.h> #include <linux/memblock.h>
#include <linux/string.h>
#include <asm/cacheflush.h> #include <asm/cacheflush.h>
#include <asm/cp15.h> #include <asm/cp15.h>
...@@ -296,6 +297,7 @@ void __init adjust_lowmem_bounds_mpu(void) ...@@ -296,6 +297,7 @@ void __init adjust_lowmem_bounds_mpu(void)
} }
} }
memset(mem, 0, sizeof(mem));
num = allocate_region(mem_start, specified_mem_size, mem_max_regions, mem); num = allocate_region(mem_start, specified_mem_size, mem_max_regions, mem);
for (i = 0; i < num; i++) { for (i = 0; i < num; i++) {
...@@ -433,7 +435,7 @@ void __init mpu_setup(void) ...@@ -433,7 +435,7 @@ void __init mpu_setup(void)
/* Background */ /* Background */
err |= mpu_setup_region(region++, 0, 32, err |= mpu_setup_region(region++, 0, 32,
MPU_ACR_XN | MPU_RGN_STRONGLY_ORDERED | MPU_AP_PL1RW_PL0NA, MPU_ACR_XN | MPU_RGN_STRONGLY_ORDERED | MPU_AP_PL1RW_PL0RW,
0, false); 0, false);
#ifdef CONFIG_XIP_KERNEL #ifdef CONFIG_XIP_KERNEL
......
...@@ -567,7 +567,7 @@ __v7_setup_stack: ...@@ -567,7 +567,7 @@ __v7_setup_stack:
/* /*
* Standard v7 proc info content * Standard v7 proc info content
*/ */
.macro __v7_proc name, initfunc, mm_mmuflags = 0, io_mmuflags = 0, hwcaps = 0, proc_fns = v7_processor_functions .macro __v7_proc name, initfunc, mm_mmuflags = 0, io_mmuflags = 0, hwcaps = 0, proc_fns = v7_processor_functions, cache_fns = v7_cache_fns
ALT_SMP(.long PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_SECT_AP_READ | \ ALT_SMP(.long PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_SECT_AP_READ | \
PMD_SECT_AF | PMD_FLAGS_SMP | \mm_mmuflags) PMD_SECT_AF | PMD_FLAGS_SMP | \mm_mmuflags)
ALT_UP(.long PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_SECT_AP_READ | \ ALT_UP(.long PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_SECT_AP_READ | \
...@@ -583,7 +583,7 @@ __v7_setup_stack: ...@@ -583,7 +583,7 @@ __v7_setup_stack:
.long \proc_fns .long \proc_fns
.long v7wbi_tlb_fns .long v7wbi_tlb_fns
.long v6_user_fns .long v6_user_fns
.long v7_cache_fns .long \cache_fns
.endm .endm
#ifndef CONFIG_ARM_LPAE #ifndef CONFIG_ARM_LPAE
...@@ -678,7 +678,7 @@ __v7_ca15mp_proc_info: ...@@ -678,7 +678,7 @@ __v7_ca15mp_proc_info:
__v7_b15mp_proc_info: __v7_b15mp_proc_info:
.long 0x420f00f0 .long 0x420f00f0
.long 0xff0ffff0 .long 0xff0ffff0
__v7_proc __v7_b15mp_proc_info, __v7_b15mp_setup __v7_proc __v7_b15mp_proc_info, __v7_b15mp_setup, cache_fns = b15_cache_fns
.size __v7_b15mp_proc_info, . - __v7_b15mp_proc_info .size __v7_b15mp_proc_info, . - __v7_b15mp_proc_info
/* /*
......
// SPDX-License-Identifier: GPL-2.0
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <asm/ptdump.h>
static int ptdump_show(struct seq_file *m, void *v)
{
struct ptdump_info *info = m->private;
ptdump_walk_pgd(m, info);
return 0;
}
static int ptdump_open(struct inode *inode, struct file *file)
{
return single_open(file, ptdump_show, inode->i_private);
}
static const struct file_operations ptdump_fops = {
.open = ptdump_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
int ptdump_debugfs_register(struct ptdump_info *info, const char *name)
{
struct dentry *pe;
pe = debugfs_create_file(name, 0400, NULL, info, &ptdump_fops);
return pe ? 0 : -ENOMEM;
}
...@@ -32,6 +32,7 @@ ...@@ -32,6 +32,7 @@
#include <linux/percpu.h> #include <linux/percpu.h>
#include <linux/bug.h> #include <linux/bug.h>
#include <asm/patch.h> #include <asm/patch.h>
#include <asm/sections.h>
#include "../decode-arm.h" #include "../decode-arm.h"
#include "../decode-thumb.h" #include "../decode-thumb.h"
...@@ -64,9 +65,6 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p) ...@@ -64,9 +65,6 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p)
int is; int is;
const struct decode_checker **checkers; const struct decode_checker **checkers;
if (in_exception_text(addr))
return -EINVAL;
#ifdef CONFIG_THUMB2_KERNEL #ifdef CONFIG_THUMB2_KERNEL
thumb = true; thumb = true;
addr &= ~1; /* Bit 0 would normally be set to indicate Thumb code */ addr &= ~1; /* Bit 0 would normally be set to indicate Thumb code */
...@@ -680,3 +678,13 @@ int __init arch_init_kprobes() ...@@ -680,3 +678,13 @@ int __init arch_init_kprobes()
#endif #endif
return 0; return 0;
} }
bool arch_within_kprobe_blacklist(unsigned long addr)
{
void *a = (void *)addr;
return __in_irqentry_text(addr) ||
in_entry_text(addr) ||
in_idmap_text(addr) ||
memory_contains(__kprobes_text_start, __kprobes_text_end, a, 1);
}
...@@ -765,7 +765,7 @@ static int imxdma_alloc_chan_resources(struct dma_chan *chan) ...@@ -765,7 +765,7 @@ static int imxdma_alloc_chan_resources(struct dma_chan *chan)
desc = kzalloc(sizeof(*desc), GFP_KERNEL); desc = kzalloc(sizeof(*desc), GFP_KERNEL);
if (!desc) if (!desc)
break; break;
__memzero(&desc->desc, sizeof(struct dma_async_tx_descriptor)); memset(&desc->desc, 0, sizeof(struct dma_async_tx_descriptor));
dma_async_tx_descriptor_init(&desc->desc, chan); dma_async_tx_descriptor_init(&desc->desc, chan);
desc->desc.tx_submit = imxdma_tx_submit; desc->desc.tx_submit = imxdma_tx_submit;
/* txd.flags will be overwritten in prep funcs */ /* txd.flags will be overwritten in prep funcs */
......
...@@ -59,6 +59,7 @@ enum cpuhp_state { ...@@ -59,6 +59,7 @@ enum cpuhp_state {
CPUHP_PCI_XGENE_DEAD, CPUHP_PCI_XGENE_DEAD,
CPUHP_IOMMU_INTEL_DEAD, CPUHP_IOMMU_INTEL_DEAD,
CPUHP_LUSTRE_CFS_DEAD, CPUHP_LUSTRE_CFS_DEAD,
CPUHP_AP_ARM_CACHE_B15_RAC_DEAD,
CPUHP_WORKQUEUE_PREP, CPUHP_WORKQUEUE_PREP,
CPUHP_POWER_NUMA_PREPARE, CPUHP_POWER_NUMA_PREPARE,
CPUHP_HRTIMERS_PREPARE, CPUHP_HRTIMERS_PREPARE,
...@@ -138,6 +139,7 @@ enum cpuhp_state { ...@@ -138,6 +139,7 @@ enum cpuhp_state {
CPUHP_AP_ARM64_ISNDEP_STARTING, CPUHP_AP_ARM64_ISNDEP_STARTING,
CPUHP_AP_SMPCFD_DYING, CPUHP_AP_SMPCFD_DYING,
CPUHP_AP_X86_TBOOT_DYING, CPUHP_AP_X86_TBOOT_DYING,
CPUHP_AP_ARM_CACHE_B15_RAC_DYING,
CPUHP_AP_ONLINE, CPUHP_AP_ONLINE,
CPUHP_TEARDOWN_CPU, CPUHP_TEARDOWN_CPU,
CPUHP_AP_ONLINE_IDLE, CPUHP_AP_ONLINE_IDLE,
......
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