summaryrefslogtreecommitdiff
path: root/arch/arm/include/asm
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/include/asm')
-rw-r--r--arch/arm/include/asm/cputype.h10
-rw-r--r--arch/arm/include/asm/dma-mapping.h7
-rw-r--r--arch/arm/include/asm/elf.h16
-rw-r--r--arch/arm/include/asm/highmem.h1
-rw-r--r--arch/arm/include/asm/mmu.h8
-rw-r--r--arch/arm/include/asm/mpu.h26
-rw-r--r--arch/arm/include/asm/processor.h22
-rw-r--r--arch/arm/include/asm/smp.h2
-rw-r--r--arch/arm/include/asm/ucontext.h1
-rw-r--r--arch/arm/include/asm/v7m.h10
10 files changed, 79 insertions, 24 deletions
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 */
generated by cgit (git 2.34.1) at 2024-05-24 22:01:31 +0000