diff options
Diffstat (limited to 'arch/arm/kernel')
-rw-r--r-- | arch/arm/kernel/Makefile | 1 | ||||
-rw-r--r-- | arch/arm/kernel/calls.S | 1 | ||||
-rw-r--r-- | arch/arm/kernel/entry-armv.S | 5 | ||||
-rw-r--r-- | arch/arm/kernel/entry-common.S | 8 | ||||
-rw-r--r-- | arch/arm/kernel/entry-header.S | 8 | ||||
-rw-r--r-- | arch/arm/kernel/head-common.S | 3 | ||||
-rw-r--r-- | arch/arm/kernel/head.S | 2 | ||||
-rw-r--r-- | arch/arm/kernel/irq.c | 12 | ||||
-rw-r--r-- | arch/arm/kernel/iwmmxt.S | 8 | ||||
-rw-r--r-- | arch/arm/kernel/machine_kexec.c | 7 | ||||
-rw-r--r-- | arch/arm/kernel/pj4-cp0.c | 42 | ||||
-rw-r--r-- | arch/arm/kernel/setup.c | 7 | ||||
-rw-r--r-- | arch/arm/kernel/sys_oabi-compat.c | 6 | ||||
-rw-r--r-- | arch/arm/kernel/unwind.c | 2 |
14 files changed, 85 insertions, 27 deletions
diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile index 10f0464206a2..38ddd9f83d0e 100644 --- a/arch/arm/kernel/Makefile +++ b/arch/arm/kernel/Makefile @@ -80,6 +80,7 @@ obj-$(CONFIG_CPU_XSCALE) += xscale-cp0.o obj-$(CONFIG_CPU_XSC3) += xscale-cp0.o obj-$(CONFIG_CPU_MOHAWK) += xscale-cp0.o obj-$(CONFIG_CPU_PJ4) += pj4-cp0.o +obj-$(CONFIG_CPU_PJ4B) += pj4-cp0.o obj-$(CONFIG_IWMMXT) += iwmmxt.o obj-$(CONFIG_PERF_EVENTS) += perf_regs.o obj-$(CONFIG_HW_PERF_EVENTS) += perf_event.o perf_event_cpu.o diff --git a/arch/arm/kernel/calls.S b/arch/arm/kernel/calls.S index 166e945de832..8f51bdcdacbb 100644 --- a/arch/arm/kernel/calls.S +++ b/arch/arm/kernel/calls.S @@ -391,6 +391,7 @@ CALL(sys_finit_module) /* 380 */ CALL(sys_sched_setattr) CALL(sys_sched_getattr) + CALL(sys_renameat2) #ifndef syscalls_counted .equ syscalls_padding, ((NR_syscalls + 3) & ~3) - NR_syscalls #define syscalls_counted diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S index 0ffdec8eceb7..52a949a8077d 100644 --- a/arch/arm/kernel/entry-armv.S +++ b/arch/arm/kernel/entry-armv.S @@ -344,7 +344,7 @@ ENDPROC(__pabt_svc) @ @ Enable the alignment trap while in kernel mode @ - alignment_trap r0 + alignment_trap r0, .LCcralign @ @ Clear FP to mark the first stack frame @@ -1147,11 +1147,8 @@ __vectors_start: .data .globl cr_alignment - .globl cr_no_alignment cr_alignment: .space 4 -cr_no_alignment: - .space 4 #ifdef CONFIG_MULTI_IRQ_HANDLER .globl handle_arch_irq diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S index a2dcafdf1bc8..7139d4a7dea7 100644 --- a/arch/arm/kernel/entry-common.S +++ b/arch/arm/kernel/entry-common.S @@ -365,13 +365,7 @@ ENTRY(vector_swi) str r0, [sp, #S_OLD_R0] @ Save OLD_R0 #endif zero_fp - -#ifdef CONFIG_ALIGNMENT_TRAP - ldr ip, __cr_alignment - ldr ip, [ip] - mcr p15, 0, ip, c1, c0 @ update control register -#endif - + alignment_trap ip, __cr_alignment enable_irq ct_user_exit get_thread_info tsk diff --git a/arch/arm/kernel/entry-header.S b/arch/arm/kernel/entry-header.S index 1420725142ca..5d702f8900b1 100644 --- a/arch/arm/kernel/entry-header.S +++ b/arch/arm/kernel/entry-header.S @@ -37,9 +37,9 @@ #endif .endm - .macro alignment_trap, rtemp + .macro alignment_trap, rtemp, label #ifdef CONFIG_ALIGNMENT_TRAP - ldr \rtemp, .LCcralign + ldr \rtemp, \label ldr \rtemp, [\rtemp] mcr p15, 0, \rtemp, c1, c0 #endif @@ -132,6 +132,10 @@ orrne r5, V7M_xPSR_FRAMEPTRALIGN biceq r5, V7M_xPSR_FRAMEPTRALIGN + @ ensure bit 0 is cleared in the PC, otherwise behaviour is + @ unpredictable + bic r4, #1 + @ write basic exception frame stmdb r2!, {r1, r3-r5} ldmia sp, {r1, r3-r5} diff --git a/arch/arm/kernel/head-common.S b/arch/arm/kernel/head-common.S index c96ecacb2021..572a38335c96 100644 --- a/arch/arm/kernel/head-common.S +++ b/arch/arm/kernel/head-common.S @@ -99,8 +99,7 @@ __mmap_switched: str r1, [r5] @ Save machine type str r2, [r6] @ Save atags pointer cmp r7, #0 - bicne r4, r0, #CR_A @ Clear 'A' bit - stmneia r7, {r0, r4} @ Save control register values + strne r0, [r7] @ Save control register values b start_kernel ENDPROC(__mmap_switched) diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S index 73dbee3097e4..2c35f0ff2fdc 100644 --- a/arch/arm/kernel/head.S +++ b/arch/arm/kernel/head.S @@ -587,7 +587,7 @@ __fixup_pv_table: add r6, r6, r3 @ adjust __pv_phys_pfn_offset address add r7, r7, r3 @ adjust __pv_offset address mov r0, r8, lsr #12 @ convert to PFN - str r0, [r6, #LOW_OFFSET] @ save computed PHYS_OFFSET to __pv_phys_pfn_offset + str r0, [r6] @ save computed PHYS_OFFSET to __pv_phys_pfn_offset strcc ip, [r7, #HIGH_OFFSET] @ save to __pv_offset high bits mov r6, r3, lsr #24 @ constant for add/sub instructions teq r3, r6, lsl #24 @ must be 16MiB aligned diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c index 9723d17b8f38..2c4257604513 100644 --- a/arch/arm/kernel/irq.c +++ b/arch/arm/kernel/irq.c @@ -37,6 +37,7 @@ #include <linux/proc_fs.h> #include <linux/export.h> +#include <asm/hardware/cache-l2x0.h> #include <asm/exception.h> #include <asm/mach/arch.h> #include <asm/mach/irq.h> @@ -115,10 +116,21 @@ EXPORT_SYMBOL_GPL(set_irq_flags); void __init init_IRQ(void) { + int ret; + if (IS_ENABLED(CONFIG_OF) && !machine_desc->init_irq) irqchip_init(); else machine_desc->init_irq(); + + if (IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_CACHE_L2X0) && + (machine_desc->l2c_aux_mask || machine_desc->l2c_aux_val)) { + outer_cache.write_sec = machine_desc->l2c_write_sec; + ret = l2x0_of_init(machine_desc->l2c_aux_val, + machine_desc->l2c_aux_mask); + if (ret) + pr_err("L2C: failed to init: %d\n", ret); + } } #ifdef CONFIG_MULTI_IRQ_HANDLER diff --git a/arch/arm/kernel/iwmmxt.S b/arch/arm/kernel/iwmmxt.S index 4bb029ea8917..a5599cfc43cb 100644 --- a/arch/arm/kernel/iwmmxt.S +++ b/arch/arm/kernel/iwmmxt.S @@ -20,12 +20,16 @@ #include <asm/asm-offsets.h> #include <asm/assembler.h> -#if defined(CONFIG_CPU_PJ4) +#if defined(CONFIG_CPU_PJ4) || defined(CONFIG_CPU_PJ4B) #define PJ4(code...) code #define XSC(code...) -#else +#elif defined(CONFIG_CPU_MOHAWK) || \ + defined(CONFIG_CPU_XSC3) || \ + defined(CONFIG_CPU_XSCALE) #define PJ4(code...) #define XSC(code...) code +#else +#error "Unsupported iWMMXt architecture" #endif #define MMX_WR0 (0x00) diff --git a/arch/arm/kernel/machine_kexec.c b/arch/arm/kernel/machine_kexec.c index f0d180d8b29f..8cf0996aa1a8 100644 --- a/arch/arm/kernel/machine_kexec.c +++ b/arch/arm/kernel/machine_kexec.c @@ -184,3 +184,10 @@ void machine_kexec(struct kimage *image) soft_restart(reboot_entry_phys); } + +void arch_crash_save_vmcoreinfo(void) +{ +#ifdef CONFIG_ARM_LPAE + VMCOREINFO_CONFIG(ARM_LPAE); +#endif +} diff --git a/arch/arm/kernel/pj4-cp0.c b/arch/arm/kernel/pj4-cp0.c index fc7208636284..8153e36b2491 100644 --- a/arch/arm/kernel/pj4-cp0.c +++ b/arch/arm/kernel/pj4-cp0.c @@ -45,7 +45,7 @@ static int iwmmxt_do(struct notifier_block *self, unsigned long cmd, void *t) return NOTIFY_DONE; } -static struct notifier_block iwmmxt_notifier_block = { +static struct notifier_block __maybe_unused iwmmxt_notifier_block = { .notifier_call = iwmmxt_do, }; @@ -72,6 +72,33 @@ static void __init pj4_cp_access_write(u32 value) : "=r" (temp) : "r" (value)); } +static int __init pj4_get_iwmmxt_version(void) +{ + u32 cp_access, wcid; + + cp_access = pj4_cp_access_read(); + pj4_cp_access_write(cp_access | 0xf); + + /* check if coprocessor 0 and 1 are available */ + if ((pj4_cp_access_read() & 0xf) != 0xf) { + pj4_cp_access_write(cp_access); + return -ENODEV; + } + + /* read iWMMXt coprocessor id register p1, c0 */ + __asm__ __volatile__ ("mrc p1, 0, %0, c0, c0, 0\n" : "=r" (wcid)); + + pj4_cp_access_write(cp_access); + + /* iWMMXt v1 */ + if ((wcid & 0xffffff00) == 0x56051000) + return 1; + /* iWMMXt v2 */ + if ((wcid & 0xffffff00) == 0x56052000) + return 2; + + return -EINVAL; +} /* * Disable CP0/CP1 on boot, and let call_fpe() and the iWMMXt lazy @@ -79,17 +106,26 @@ static void __init pj4_cp_access_write(u32 value) */ static int __init pj4_cp0_init(void) { - u32 cp_access; + u32 __maybe_unused cp_access; + int vers; if (!cpu_is_pj4()) return 0; + vers = pj4_get_iwmmxt_version(); + if (vers < 0) + return 0; + +#ifndef CONFIG_IWMMXT + pr_info("PJ4 iWMMXt coprocessor detected, but kernel support is missing.\n"); +#else cp_access = pj4_cp_access_read() & ~0xf; pj4_cp_access_write(cp_access); - printk(KERN_INFO "PJ4 iWMMXt coprocessor enabled.\n"); + pr_info("PJ4 iWMMXt v%d coprocessor enabled.\n", vers); elf_hwcap |= HWCAP_IWMMXT; thread_register_notifier(&iwmmxt_notifier_block); +#endif return 0; } diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c index 6d78ba47ea5b..8a16ee5d8a95 100644 --- a/arch/arm/kernel/setup.c +++ b/arch/arm/kernel/setup.c @@ -72,6 +72,7 @@ static int __init fpe_setup(char *line) __setup("fpe=", fpe_setup); #endif +extern void init_default_cache_policy(unsigned long); extern void paging_init(const struct machine_desc *desc); extern void early_paging_init(const struct machine_desc *, struct proc_info_list *); @@ -590,7 +591,7 @@ static void __init setup_processor(void) pr_info("CPU: %s [%08x] revision %d (ARMv%s), cr=%08lx\n", cpu_name, read_cpuid_id(), read_cpuid_id() & 15, - proc_arch[cpu_architecture()], cr_alignment); + proc_arch[cpu_architecture()], get_cr()); snprintf(init_utsname()->machine, __NEW_UTS_LEN + 1, "%s%c", list->arch_name, ENDIANNESS); @@ -603,7 +604,9 @@ static void __init setup_processor(void) #ifndef CONFIG_ARM_THUMB elf_hwcap &= ~(HWCAP_THUMB | HWCAP_IDIVT); #endif - +#ifdef CONFIG_MMU + init_default_cache_policy(list->__cpu_mm_mmu_flags); +#endif erratum_a15_798181_init(); feat_v6_fixup(); diff --git a/arch/arm/kernel/sys_oabi-compat.c b/arch/arm/kernel/sys_oabi-compat.c index 702bd329d9d0..e90a3148f385 100644 --- a/arch/arm/kernel/sys_oabi-compat.c +++ b/arch/arm/kernel/sys_oabi-compat.c @@ -203,9 +203,9 @@ asmlinkage long sys_oabi_fcntl64(unsigned int fd, unsigned int cmd, int ret; switch (cmd) { - case F_GETLKP: - case F_SETLKP: - case F_SETLKPW: + case F_OFD_GETLK: + case F_OFD_SETLK: + case F_OFD_SETLKW: case F_GETLK64: case F_SETLK64: case F_SETLKW64: diff --git a/arch/arm/kernel/unwind.c b/arch/arm/kernel/unwind.c index 3c217694ebec..cb791ac6a003 100644 --- a/arch/arm/kernel/unwind.c +++ b/arch/arm/kernel/unwind.c @@ -285,7 +285,7 @@ static int unwind_exec_pop_r4_to_rN(struct unwind_ctrl_block *ctrl, if (unwind_pop_register(ctrl, &vsp, reg)) return -URC_FAILURE; - if (insn & 0x80) + if (insn & 0x8) if (unwind_pop_register(ctrl, &vsp, 14)) return -URC_FAILURE; |