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-rw-r--r--arch/openrisc/include/asm/Kbuild3
-rw-r--r--arch/openrisc/include/asm/cacheflush.h17
-rw-r--r--arch/openrisc/include/asm/cpuinfo.h24
-rw-r--r--arch/openrisc/include/asm/fixmap.h21
-rw-r--r--arch/openrisc/include/asm/fpu.h22
-rw-r--r--arch/openrisc/include/asm/page.h13
-rw-r--r--arch/openrisc/include/asm/pgalloc.h13
-rw-r--r--arch/openrisc/include/asm/processor.h1
-rw-r--r--arch/openrisc/include/asm/ptrace.h76
-rw-r--r--arch/openrisc/include/asm/syscalls.h4
-rw-r--r--arch/openrisc/include/asm/unistd.h8
-rw-r--r--arch/openrisc/include/uapi/asm/Kbuild2
-rw-r--r--arch/openrisc/include/uapi/asm/elf.h75
-rw-r--r--arch/openrisc/include/uapi/asm/unistd.h15
14 files changed, 220 insertions, 74 deletions
diff --git a/arch/openrisc/include/asm/Kbuild b/arch/openrisc/include/asm/Kbuild
index c8c99b554ca4..2b1a6b00cdac 100644
--- a/arch/openrisc/include/asm/Kbuild
+++ b/arch/openrisc/include/asm/Kbuild
@@ -1,4 +1,6 @@
# SPDX-License-Identifier: GPL-2.0
+syscall-y += syscall_table_32.h
+
generic-y += extable.h
generic-y += kvm_para.h
generic-y += parport.h
@@ -7,3 +9,4 @@ generic-y += spinlock.h
generic-y += qrwlock_types.h
generic-y += qrwlock.h
generic-y += user.h
+generic-y += text-patching.h
diff --git a/arch/openrisc/include/asm/cacheflush.h b/arch/openrisc/include/asm/cacheflush.h
index 984c331ff5f4..0e60af486ec1 100644
--- a/arch/openrisc/include/asm/cacheflush.h
+++ b/arch/openrisc/include/asm/cacheflush.h
@@ -23,6 +23,9 @@
*/
extern void local_dcache_page_flush(struct page *page);
extern void local_icache_page_inv(struct page *page);
+extern void local_dcache_range_flush(unsigned long start, unsigned long end);
+extern void local_dcache_range_inv(unsigned long start, unsigned long end);
+extern void local_icache_range_inv(unsigned long start, unsigned long end);
/*
* Data cache flushing always happen on the local cpu. Instruction cache
@@ -39,6 +42,20 @@ extern void smp_icache_page_inv(struct page *page);
#endif /* CONFIG_SMP */
/*
+ * Even if the actual block size is larger than L1_CACHE_BYTES, paddr
+ * can be incremented by L1_CACHE_BYTES. When paddr is written to the
+ * invalidate register, the entire cache line encompassing this address
+ * is invalidated. Each subsequent reference to the same cache line will
+ * not affect the invalidation process.
+ */
+#define local_dcache_block_flush(addr) \
+ local_dcache_range_flush(addr, addr + L1_CACHE_BYTES)
+#define local_dcache_block_inv(addr) \
+ local_dcache_range_inv(addr, addr + L1_CACHE_BYTES)
+#define local_icache_block_inv(addr) \
+ local_icache_range_inv(addr, addr + L1_CACHE_BYTES)
+
+/*
* Synchronizes caches. Whenever a cpu writes executable code to memory, this
* should be called to make sure the processor sees the newly written code.
*/
diff --git a/arch/openrisc/include/asm/cpuinfo.h b/arch/openrisc/include/asm/cpuinfo.h
index 5e4744153d0e..3cfc4cf0b019 100644
--- a/arch/openrisc/include/asm/cpuinfo.h
+++ b/arch/openrisc/include/asm/cpuinfo.h
@@ -15,16 +15,21 @@
#ifndef __ASM_OPENRISC_CPUINFO_H
#define __ASM_OPENRISC_CPUINFO_H
+#include <asm/spr.h>
+#include <asm/spr_defs.h>
+
+struct cache_desc {
+ u32 size;
+ u32 sets;
+ u32 block_size;
+ u32 ways;
+};
+
struct cpuinfo_or1k {
u32 clock_frequency;
- u32 icache_size;
- u32 icache_block_size;
- u32 icache_ways;
-
- u32 dcache_size;
- u32 dcache_block_size;
- u32 dcache_ways;
+ struct cache_desc icache;
+ struct cache_desc dcache;
u16 coreid;
};
@@ -32,4 +37,9 @@ struct cpuinfo_or1k {
extern struct cpuinfo_or1k cpuinfo_or1k[NR_CPUS];
extern void setup_cpuinfo(void);
+/*
+ * Check if the cache component exists.
+ */
+extern bool cpu_cache_is_present(const unsigned int cache_type);
+
#endif /* __ASM_OPENRISC_CPUINFO_H */
diff --git a/arch/openrisc/include/asm/fixmap.h b/arch/openrisc/include/asm/fixmap.h
index ecdb98a5839f..aaa6a26a3e92 100644
--- a/arch/openrisc/include/asm/fixmap.h
+++ b/arch/openrisc/include/asm/fixmap.h
@@ -26,29 +26,18 @@
#include <linux/bug.h>
#include <asm/page.h>
-/*
- * On OpenRISC we use these special fixed_addresses for doing ioremap
- * early in the boot process before memory initialization is complete.
- * This is used, in particular, by the early serial console code.
- *
- * It's not really 'fixmap', per se, but fits loosely into the same
- * paradigm.
- */
enum fixed_addresses {
- /*
- * FIX_IOREMAP entries are useful for mapping physical address
- * space before ioremap() is useable, e.g. really early in boot
- * before kmalloc() is working.
- */
-#define FIX_N_IOREMAPS 32
- FIX_IOREMAP_BEGIN,
- FIX_IOREMAP_END = FIX_IOREMAP_BEGIN + FIX_N_IOREMAPS - 1,
+ FIX_EARLYCON_MEM_BASE,
__end_of_fixed_addresses
};
#define FIXADDR_SIZE (__end_of_fixed_addresses << PAGE_SHIFT)
/* FIXADDR_BOTTOM might be a better name here... */
#define FIXADDR_START (FIXADDR_TOP - FIXADDR_SIZE)
+#define FIXMAP_PAGE_IO PAGE_KERNEL_NOCACHE
+
+extern void __set_fixmap(enum fixed_addresses idx,
+ phys_addr_t phys, pgprot_t flags);
#include <asm-generic/fixmap.h>
diff --git a/arch/openrisc/include/asm/fpu.h b/arch/openrisc/include/asm/fpu.h
new file mode 100644
index 000000000000..57bc44d80d53
--- /dev/null
+++ b/arch/openrisc/include/asm/fpu.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_OPENRISC_FPU_H
+#define __ASM_OPENRISC_FPU_H
+
+struct task_struct;
+
+#ifdef CONFIG_FPU
+static inline void save_fpu(struct task_struct *task)
+{
+ task->thread.fpcsr = mfspr(SPR_FPCSR);
+}
+
+static inline void restore_fpu(struct task_struct *task)
+{
+ mtspr(SPR_FPCSR, task->thread.fpcsr);
+}
+#else
+#define save_fpu(tsk) do { } while (0)
+#define restore_fpu(tsk) do { } while (0)
+#endif
+
+#endif /* __ASM_OPENRISC_FPU_H */
diff --git a/arch/openrisc/include/asm/page.h b/arch/openrisc/include/asm/page.h
index 1d5913f67c31..c589e96035e1 100644
--- a/arch/openrisc/include/asm/page.h
+++ b/arch/openrisc/include/asm/page.h
@@ -15,16 +15,7 @@
#ifndef __ASM_OPENRISC_PAGE_H
#define __ASM_OPENRISC_PAGE_H
-
-/* PAGE_SHIFT determines the page size */
-
-#define PAGE_SHIFT CONFIG_PAGE_SHIFT
-#ifdef __ASSEMBLY__
-#define PAGE_SIZE (1 << PAGE_SHIFT)
-#else
-#define PAGE_SIZE (1UL << PAGE_SHIFT)
-#endif
-#define PAGE_MASK (~(PAGE_SIZE-1))
+#include <vdso/page.h>
#define PAGE_OFFSET 0xc0000000
#define KERNELBASE PAGE_OFFSET
@@ -80,8 +71,6 @@ static inline unsigned long virt_to_pfn(const void *kaddr)
#define virt_to_page(addr) \
(mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT))
-#define page_to_phys(page) ((dma_addr_t)page_to_pfn(page) << PAGE_SHIFT)
-
#define virt_addr_valid(kaddr) (pfn_valid(virt_to_pfn(kaddr)))
#endif /* __ASSEMBLY__ */
diff --git a/arch/openrisc/include/asm/pgalloc.h b/arch/openrisc/include/asm/pgalloc.h
index c6a73772a546..3f110931d8f6 100644
--- a/arch/openrisc/include/asm/pgalloc.h
+++ b/arch/openrisc/include/asm/pgalloc.h
@@ -41,15 +41,13 @@ static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
*/
static inline pgd_t *pgd_alloc(struct mm_struct *mm)
{
- pgd_t *ret = (pgd_t *)__get_free_page(GFP_KERNEL);
+ pgd_t *ret = __pgd_alloc(mm, 0);
- if (ret) {
- memset(ret, 0, USER_PTRS_PER_PGD * sizeof(pgd_t));
+ if (ret)
memcpy(ret + USER_PTRS_PER_PGD,
swapper_pg_dir + USER_PTRS_PER_PGD,
(PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
- }
return ret;
}
@@ -66,10 +64,7 @@ extern inline pgd_t *pgd_alloc(struct mm_struct *mm)
extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm);
-#define __pte_free_tlb(tlb, pte, addr) \
-do { \
- pagetable_pte_dtor(page_ptdesc(pte)); \
- tlb_remove_page_ptdesc((tlb), (page_ptdesc(pte))); \
-} while (0)
+#define __pte_free_tlb(tlb, pte, addr) \
+ tlb_remove_ptdesc((tlb), page_ptdesc(pte))
#endif
diff --git a/arch/openrisc/include/asm/processor.h b/arch/openrisc/include/asm/processor.h
index 3b736e74e6ed..e05d1b59e24e 100644
--- a/arch/openrisc/include/asm/processor.h
+++ b/arch/openrisc/include/asm/processor.h
@@ -44,6 +44,7 @@
struct task_struct;
struct thread_struct {
+ long fpcsr; /* Floating point control status register. */
};
/*
diff --git a/arch/openrisc/include/asm/ptrace.h b/arch/openrisc/include/asm/ptrace.h
index 375147ff71fc..e5a282b67075 100644
--- a/arch/openrisc/include/asm/ptrace.h
+++ b/arch/openrisc/include/asm/ptrace.h
@@ -17,6 +17,7 @@
#include <asm/spr_defs.h>
#include <uapi/asm/ptrace.h>
+#include <linux/compiler.h>
/*
* Make kernel PTrace/register structures opaque to userspace... userspace can
@@ -42,6 +43,36 @@ struct pt_regs {
/* Named registers */
long sr; /* Stored in place of r0 */
long sp; /* r1 */
+ long gpr2;
+ long gpr3;
+ long gpr4;
+ long gpr5;
+ long gpr6;
+ long gpr7;
+ long gpr8;
+ long gpr9;
+ long gpr10;
+ long gpr11;
+ long gpr12;
+ long gpr13;
+ long gpr14;
+ long gpr15;
+ long gpr16;
+ long gpr17;
+ long gpr18;
+ long gpr19;
+ long gpr20;
+ long gpr21;
+ long gpr22;
+ long gpr23;
+ long gpr24;
+ long gpr25;
+ long gpr26;
+ long gpr27;
+ long gpr28;
+ long gpr29;
+ long gpr30;
+ long gpr31;
};
struct {
/* Old style */
@@ -59,23 +90,63 @@ struct pt_regs {
* -1 for all other exceptions.
*/
long orig_gpr11; /* For restarting system calls */
- long fpcsr; /* Floating point control status register. */
+ long dummy; /* Cheap alignment fix */
long dummy2; /* Cheap alignment fix */
};
/* TODO: Rename this to REDZONE because that's what it is */
#define STACK_FRAME_OVERHEAD 128 /* size of minimum stack frame */
-#define instruction_pointer(regs) ((regs)->pc)
+#define MAX_REG_OFFSET offsetof(struct pt_regs, orig_gpr11)
+
+/* Helpers for working with the instruction pointer */
+static inline unsigned long instruction_pointer(struct pt_regs *regs)
+{
+ return (unsigned long)regs->pc;
+}
+static inline void instruction_pointer_set(struct pt_regs *regs,
+ unsigned long val)
+{
+ regs->pc = val;
+}
+
#define user_mode(regs) (((regs)->sr & SPR_SR_SM) == 0)
#define user_stack_pointer(regs) ((unsigned long)(regs)->sp)
#define profile_pc(regs) instruction_pointer(regs)
+/* Valid only for Kernel mode traps. */
+static inline unsigned long kernel_stack_pointer(struct pt_regs *regs)
+{
+ return (unsigned long)regs->sp;
+}
+
static inline long regs_return_value(struct pt_regs *regs)
{
return regs->gpr[11];
}
+extern int regs_query_register_offset(const char *name);
+extern unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs,
+ unsigned int n);
+
+/**
+ * regs_get_register() - get register value from its offset
+ * @regs: pt_regs from which register value is gotten
+ * @offset: offset of the register.
+ *
+ * regs_get_register returns the value of a register whose offset from @regs.
+ * The @offset is the offset of the register in struct pt_regs.
+ * If @offset is bigger than MAX_REG_OFFSET, this returns 0.
+ */
+static inline unsigned long regs_get_register(struct pt_regs *regs,
+ unsigned int offset)
+{
+ if (unlikely(offset > MAX_REG_OFFSET))
+ return 0;
+
+ return *(unsigned long *)((unsigned long)regs + offset);
+}
+
#endif /* __ASSEMBLY__ */
/*
@@ -115,6 +186,5 @@ static inline long regs_return_value(struct pt_regs *regs)
#define PT_GPR31 124
#define PT_PC 128
#define PT_ORIG_GPR11 132
-#define PT_FPCSR 136
#endif /* __ASM_OPENRISC_PTRACE_H */
diff --git a/arch/openrisc/include/asm/syscalls.h b/arch/openrisc/include/asm/syscalls.h
index aa1c7e98722e..9f4c47961bea 100644
--- a/arch/openrisc/include/asm/syscalls.h
+++ b/arch/openrisc/include/asm/syscalls.h
@@ -25,8 +25,4 @@ asmlinkage long __sys_clone(unsigned long clone_flags, unsigned long newsp,
asmlinkage long __sys_clone3(struct clone_args __user *uargs, size_t size);
asmlinkage long __sys_fork(void);
-#define sys_clone __sys_clone
-#define sys_clone3 __sys_clone3
-#define sys_fork __sys_fork
-
#endif /* __ASM_OPENRISC_SYSCALLS_H */
diff --git a/arch/openrisc/include/asm/unistd.h b/arch/openrisc/include/asm/unistd.h
new file mode 100644
index 000000000000..c73f65e18d3b
--- /dev/null
+++ b/arch/openrisc/include/asm/unistd.h
@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
+
+#define __ARCH_WANT_STAT64
+#define __ARCH_WANT_SYS_FORK
+#define __ARCH_WANT_SYS_CLONE
+#define __ARCH_WANT_TIME32_SYSCALLS
+
+#include <uapi/asm/unistd.h>
diff --git a/arch/openrisc/include/uapi/asm/Kbuild b/arch/openrisc/include/uapi/asm/Kbuild
index e78470141932..2501e82a1a0a 100644
--- a/arch/openrisc/include/uapi/asm/Kbuild
+++ b/arch/openrisc/include/uapi/asm/Kbuild
@@ -1,2 +1,4 @@
# SPDX-License-Identifier: GPL-2.0
+syscall-y += unistd_32.h
+
generic-y += ucontext.h
diff --git a/arch/openrisc/include/uapi/asm/elf.h b/arch/openrisc/include/uapi/asm/elf.h
index 6868f81c281e..441e343f8268 100644
--- a/arch/openrisc/include/uapi/asm/elf.h
+++ b/arch/openrisc/include/uapi/asm/elf.h
@@ -34,15 +34,72 @@
#include <asm/ptrace.h>
/* The OR1K relocation types... not all relevant for module loader */
-#define R_OR32_NONE 0
-#define R_OR32_32 1
-#define R_OR32_16 2
-#define R_OR32_8 3
-#define R_OR32_CONST 4
-#define R_OR32_CONSTH 5
-#define R_OR32_JUMPTARG 6
-#define R_OR32_VTINHERIT 7
-#define R_OR32_VTENTRY 8
+#define R_OR1K_NONE 0
+#define R_OR1K_32 1
+#define R_OR1K_16 2
+#define R_OR1K_8 3
+#define R_OR1K_LO_16_IN_INSN 4
+#define R_OR1K_HI_16_IN_INSN 5
+#define R_OR1K_INSN_REL_26 6
+#define R_OR1K_GNU_VTENTRY 7
+#define R_OR1K_GNU_VTINHERIT 8
+#define R_OR1K_32_PCREL 9
+#define R_OR1K_16_PCREL 10
+#define R_OR1K_8_PCREL 11
+#define R_OR1K_GOTPC_HI16 12
+#define R_OR1K_GOTPC_LO16 13
+#define R_OR1K_GOT16 14
+#define R_OR1K_PLT26 15
+#define R_OR1K_GOTOFF_HI16 16
+#define R_OR1K_GOTOFF_LO16 17
+#define R_OR1K_COPY 18
+#define R_OR1K_GLOB_DAT 19
+#define R_OR1K_JMP_SLOT 20
+#define R_OR1K_RELATIVE 21
+#define R_OR1K_TLS_GD_HI16 22
+#define R_OR1K_TLS_GD_LO16 23
+#define R_OR1K_TLS_LDM_HI16 24
+#define R_OR1K_TLS_LDM_LO16 25
+#define R_OR1K_TLS_LDO_HI16 26
+#define R_OR1K_TLS_LDO_LO16 27
+#define R_OR1K_TLS_IE_HI16 28
+#define R_OR1K_TLS_IE_LO16 29
+#define R_OR1K_TLS_LE_HI16 30
+#define R_OR1K_TLS_LE_LO16 31
+#define R_OR1K_TLS_TPOFF 32
+#define R_OR1K_TLS_DTPOFF 33
+#define R_OR1K_TLS_DTPMOD 34
+#define R_OR1K_AHI16 35
+#define R_OR1K_GOTOFF_AHI16 36
+#define R_OR1K_TLS_IE_AHI16 37
+#define R_OR1K_TLS_LE_AHI16 38
+#define R_OR1K_SLO16 39
+#define R_OR1K_GOTOFF_SLO16 40
+#define R_OR1K_TLS_LE_SLO16 41
+#define R_OR1K_PCREL_PG21 42
+#define R_OR1K_GOT_PG21 43
+#define R_OR1K_TLS_GD_PG21 44
+#define R_OR1K_TLS_LDM_PG21 45
+#define R_OR1K_TLS_IE_PG21 46
+#define R_OR1K_LO13 47
+#define R_OR1K_GOT_LO13 48
+#define R_OR1K_TLS_GD_LO13 49
+#define R_OR1K_TLS_LDM_LO13 50
+#define R_OR1K_TLS_IE_LO13 51
+#define R_OR1K_SLO13 52
+#define R_OR1K_PLTA26 53
+#define R_OR1K_GOT_AHI16 54
+
+/* Old relocation names */
+#define R_OR32_NONE R_OR1K_NONE
+#define R_OR32_32 R_OR1K_32
+#define R_OR32_16 R_OR1K_16
+#define R_OR32_8 R_OR1K_8
+#define R_OR32_CONST R_OR1K_LO_16_IN_INSN
+#define R_OR32_CONSTH R_OR1K_HI_16_IN_INSN
+#define R_OR32_JUMPTARG R_OR1K_INSN_REL_26
+#define R_OR32_VTENTRY R_OR1K_GNU_VTENTRY
+#define R_OR32_VTINHERIT R_OR1K_GNU_VTINHERIT
typedef unsigned long elf_greg_t;
diff --git a/arch/openrisc/include/uapi/asm/unistd.h b/arch/openrisc/include/uapi/asm/unistd.h
index fae34c60fa88..46b94d454efd 100644
--- a/arch/openrisc/include/uapi/asm/unistd.h
+++ b/arch/openrisc/include/uapi/asm/unistd.h
@@ -17,17 +17,4 @@
* (at your option) any later version.
*/
-#define sys_mmap2 sys_mmap_pgoff
-
-#define __ARCH_WANT_RENAMEAT
-#define __ARCH_WANT_STAT64
-#define __ARCH_WANT_SET_GET_RLIMIT
-#define __ARCH_WANT_SYS_FORK
-#define __ARCH_WANT_SYS_CLONE
-#define __ARCH_WANT_SYS_CLONE3
-#define __ARCH_WANT_TIME32_SYSCALLS
-
-#include <asm-generic/unistd.h>
-
-#define __NR_or1k_atomic __NR_arch_specific_syscall
-__SYSCALL(__NR_or1k_atomic, sys_or1k_atomic)
+#include <asm/unistd_32.h>
generated by cgit v1.2.3 (git 2.46.0) at 2025-04-27 04:50:53 +0000