diff options
Diffstat (limited to 'arch/cris/kernel')
| -rw-r--r-- | arch/cris/kernel/Makefile | 17 | ||||
| -rw-r--r-- | arch/cris/kernel/asm-offsets.c | 60 | ||||
| -rw-r--r-- | arch/cris/kernel/crisksyms.c | 69 | ||||
| -rw-r--r-- | arch/cris/kernel/irq.c | 72 | ||||
| -rw-r--r-- | arch/cris/kernel/module.c | 82 | ||||
| -rw-r--r-- | arch/cris/kernel/process.c | 81 | ||||
| -rw-r--r-- | arch/cris/kernel/profile.c | 87 | ||||
| -rw-r--r-- | arch/cris/kernel/ptrace.c | 68 | ||||
| -rw-r--r-- | arch/cris/kernel/setup.c | 214 | ||||
| -rw-r--r-- | arch/cris/kernel/stacktrace.c | 76 | ||||
| -rw-r--r-- | arch/cris/kernel/sys_cris.c | 36 | ||||
| -rw-r--r-- | arch/cris/kernel/time.c | 73 | ||||
| -rw-r--r-- | arch/cris/kernel/traps.c | 241 | ||||
| -rw-r--r-- | arch/cris/kernel/vmlinux.lds.S | 138 |
14 files changed, 0 insertions, 1314 deletions
diff --git a/arch/cris/kernel/Makefile b/arch/cris/kernel/Makefile deleted file mode 100644 index f6bfee6c8c1b..000000000000 --- a/arch/cris/kernel/Makefile +++ /dev/null @@ -1,17 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0 -# -# Makefile for the CRIS port. -# - -CPPFLAGS_vmlinux.lds := -DDRAM_VIRTUAL_BASE=0x$(CONFIG_ETRAX_DRAM_VIRTUAL_BASE) -extra-y := vmlinux.lds - -obj-y := process.o traps.o irq.o ptrace.o setup.o time.o sys_cris.o -obj-y += stacktrace.o - -obj-$(CONFIG_MODULES) += crisksyms.o -obj-$(CONFIG_MODULES) += module.o -obj-$(CONFIG_SYSTEM_PROFILER) += profile.o - -clean: - diff --git a/arch/cris/kernel/asm-offsets.c b/arch/cris/kernel/asm-offsets.c deleted file mode 100644 index 0a5129941485..000000000000 --- a/arch/cris/kernel/asm-offsets.c +++ /dev/null @@ -1,60 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include <linux/kbuild.h> -#include <linux/sched.h> -#include <asm/thread_info.h> - -/* - * Generate definitions needed by assembly language modules. - * This code generates raw asm output which is post-processed to extract - * and format the required data. - */ - -#if !defined(CONFIG_ETRAX_ARCH_V10) && !defined(CONFIG_ETRAX_ARCH_V32) -#error One of ARCH v10 and ARCH v32 must be true! -#endif - -int main(void) -{ -#define ENTRY(entry) DEFINE(PT_ ## entry, offsetof(struct pt_regs, entry)) - ENTRY(orig_r10); - ENTRY(r13); - ENTRY(r12); - ENTRY(r11); - ENTRY(r10); - ENTRY(r9); -#ifdef CONFIG_ETRAX_ARCH_V32 - ENTRY(acr); - ENTRY(srs); -#endif - ENTRY(mof); -#ifdef CONFIG_ETRAX_ARCH_V10 - ENTRY(dccr); -#else - ENTRY(ccs); -#endif - ENTRY(srp); - BLANK(); -#undef ENTRY -#define ENTRY(entry) DEFINE(TI_ ## entry, offsetof(struct thread_info, entry)) - ENTRY(task); - ENTRY(flags); - ENTRY(preempt_count); - BLANK(); -#undef ENTRY -#define ENTRY(entry) DEFINE(THREAD_ ## entry, offsetof(struct thread_struct, entry)) - ENTRY(ksp); - ENTRY(usp); -#ifdef CONFIG_ETRAX_ARCH_V10 - ENTRY(dccr); -#else - ENTRY(ccs); -#endif - BLANK(); -#undef ENTRY -#define ENTRY(entry) DEFINE(TASK_ ## entry, offsetof(struct task_struct, entry)) - ENTRY(pid); - BLANK(); - DEFINE(LCLONE_VM, CLONE_VM); - DEFINE(LCLONE_UNTRACED, CLONE_UNTRACED); - return 0; -} diff --git a/arch/cris/kernel/crisksyms.c b/arch/cris/kernel/crisksyms.c deleted file mode 100644 index 7024f7278c89..000000000000 --- a/arch/cris/kernel/crisksyms.c +++ /dev/null @@ -1,69 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include <linux/module.h> -#include <linux/user.h> -#include <linux/elfcore.h> -#include <linux/sched.h> -#include <linux/in6.h> -#include <linux/interrupt.h> -#include <linux/pm.h> -#include <linux/kernel.h> -#include <linux/string.h> -#include <linux/tty.h> - -#include <asm/processor.h> -#include <linux/uaccess.h> -#include <asm/checksum.h> -#include <asm/io.h> -#include <asm/delay.h> -#include <asm/irq.h> -#include <asm/pgtable.h> -#include <asm/fasttimer.h> - -extern void __Udiv(void); -extern void __Umod(void); -extern void __Div(void); -extern void __Mod(void); -extern void __ashldi3(void); -extern void __ashrdi3(void); -extern void __lshrdi3(void); -extern void __negdi2(void); -extern void iounmap(volatile void * __iomem); - -/* Platform dependent support */ -EXPORT_SYMBOL(loops_per_usec); - -/* Math functions */ -EXPORT_SYMBOL(__Udiv); -EXPORT_SYMBOL(__Umod); -EXPORT_SYMBOL(__Div); -EXPORT_SYMBOL(__Mod); -EXPORT_SYMBOL(__ashldi3); -EXPORT_SYMBOL(__ashrdi3); -EXPORT_SYMBOL(__lshrdi3); -EXPORT_SYMBOL(__negdi2); - -/* Memory functions */ -EXPORT_SYMBOL(__ioremap); -EXPORT_SYMBOL(iounmap); - -#undef memcpy -#undef memset -extern void * memset(void *, int, __kernel_size_t); -extern void * memcpy(void *, const void *, __kernel_size_t); -EXPORT_SYMBOL(memcpy); -EXPORT_SYMBOL(memset); -#ifdef CONFIG_ETRAX_ARCH_V32 -#undef strcmp -EXPORT_SYMBOL(strcmp); -#endif - -#ifdef CONFIG_ETRAX_FAST_TIMER -/* Fast timer functions */ -EXPORT_SYMBOL(fast_timer_list); -EXPORT_SYMBOL(start_one_shot_timer); -EXPORT_SYMBOL(del_fast_timer); -EXPORT_SYMBOL(schedule_usleep); -#endif -EXPORT_SYMBOL(csum_partial); -EXPORT_SYMBOL(csum_partial_copy_from_user); -EXPORT_SYMBOL(csum_partial_copy_nocheck); diff --git a/arch/cris/kernel/irq.c b/arch/cris/kernel/irq.c deleted file mode 100644 index 726cdf4bf2d8..000000000000 --- a/arch/cris/kernel/irq.c +++ /dev/null @@ -1,72 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * - * linux/arch/cris/kernel/irq.c - * - * Copyright (c) 2000,2007 Axis Communications AB - * - * Authors: Bjorn Wesen (bjornw@axis.com) - * - * This file contains the code used by various IRQ handling routines: - * asking for different IRQs should be done through these routines - * instead of just grabbing them. Thus setups with different IRQ numbers - * shouldn't result in any weird surprises, and installing new handlers - * should be easier. - * - */ - -/* - * IRQs are in fact implemented a bit like signal handlers for the kernel. - * Naturally it's not a 1:1 relation, but there are similarities. - */ - -#include <linux/module.h> -#include <linux/ptrace.h> -#include <linux/irq.h> -#include <linux/sched/debug.h> - -#include <linux/kernel_stat.h> -#include <linux/signal.h> -#include <linux/sched.h> -#include <linux/ioport.h> -#include <linux/interrupt.h> -#include <linux/timex.h> -#include <linux/random.h> -#include <linux/init.h> -#include <linux/seq_file.h> -#include <linux/errno.h> -#include <linux/spinlock.h> - -#include <asm/io.h> -#include <arch/system.h> - -/* called by the assembler IRQ entry functions defined in irq.h - * to dispatch the interrupts to registered handlers - */ - -asmlinkage void do_IRQ(int irq, struct pt_regs * regs) -{ - unsigned long sp; - struct pt_regs *old_regs; - - trace_hardirqs_off(); - - old_regs = set_irq_regs(regs); - irq_enter(); - sp = rdsp(); - if (unlikely((sp & (PAGE_SIZE - 1)) < (PAGE_SIZE/8))) { - printk("do_IRQ: stack overflow: %lX\n", sp); - show_stack(NULL, (unsigned long *)sp); - } - generic_handle_irq(irq); - irq_exit(); - set_irq_regs(old_regs); -} - -void weird_irq(void) -{ - local_irq_disable(); - printk("weird irq\n"); - while(1); -} - diff --git a/arch/cris/kernel/module.c b/arch/cris/kernel/module.c deleted file mode 100644 index af04cb6b6dc9..000000000000 --- a/arch/cris/kernel/module.c +++ /dev/null @@ -1,82 +0,0 @@ -/* Kernel module help for i386. - Copyright (C) 2001 Rusty Russell. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA -*/ -#include <linux/moduleloader.h> -#include <linux/elf.h> -#include <linux/vmalloc.h> -#include <linux/fs.h> -#include <linux/string.h> -#include <linux/kernel.h> -#include <linux/slab.h> - -#if 0 -#define DEBUGP printk -#else -#define DEBUGP(fmt , ...) -#endif - -#ifdef CONFIG_ETRAX_KMALLOCED_MODULES -void *module_alloc(unsigned long size) -{ - return kmalloc(size, GFP_KERNEL); -} - -/* Free memory returned from module_alloc */ -void module_memfree(void *module_region) -{ - kfree(module_region); -} -#endif - -int apply_relocate_add(Elf32_Shdr *sechdrs, - const char *strtab, - unsigned int symindex, - unsigned int relsec, - struct module *me) -{ - unsigned int i; - Elf32_Rela *rela = (void *)sechdrs[relsec].sh_addr; - - DEBUGP ("Applying add relocate section %u to %u\n", relsec, - sechdrs[relsec].sh_info); - - for (i = 0; i < sechdrs[relsec].sh_size / sizeof (*rela); i++) { - /* This is where to make the change */ - uint32_t *loc - = ((void *)sechdrs[sechdrs[relsec].sh_info].sh_addr - + rela[i].r_offset); - /* This is the symbol it is referring to. Note that all - undefined symbols have been resolved. */ - Elf32_Sym *sym - = ((Elf32_Sym *)sechdrs[symindex].sh_addr - + ELF32_R_SYM (rela[i].r_info)); - switch (ELF32_R_TYPE(rela[i].r_info)) { - case R_CRIS_32: - *loc = sym->st_value + rela[i].r_addend; - break; - case R_CRIS_32_PCREL: - *loc = sym->st_value - (unsigned)loc + rela[i].r_addend - 4; - break; - default: - printk(KERN_ERR "module %s: Unknown relocation: %u\n", - me->name, ELF32_R_TYPE(rela[i].r_info)); - return -ENOEXEC; - } - } - - return 0; -} diff --git a/arch/cris/kernel/process.c b/arch/cris/kernel/process.c deleted file mode 100644 index 50e5cf09841d..000000000000 --- a/arch/cris/kernel/process.c +++ /dev/null @@ -1,81 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * linux/arch/cris/kernel/process.c - * - * Copyright (C) 1995 Linus Torvalds - * Copyright (C) 2000-2002 Axis Communications AB - * - * Authors: Bjorn Wesen (bjornw@axis.com) - * - */ - -/* - * This file handles the architecture-dependent parts of process handling.. - */ - -#include <linux/atomic.h> -#include <asm/pgtable.h> -#include <linux/uaccess.h> -#include <asm/irq.h> -#include <linux/module.h> -#include <linux/spinlock.h> -#include <linux/init_task.h> -#include <linux/sched.h> -#include <linux/sched/task.h> -#include <linux/fs.h> -#include <linux/user.h> -#include <linux/elfcore.h> -#include <linux/mqueue.h> -#include <linux/reboot.h> -#include <linux/rcupdate.h> - -//#define DEBUG - -extern void default_idle(void); - -void (*pm_power_off)(void); -EXPORT_SYMBOL(pm_power_off); - -void arch_cpu_idle(void) -{ - default_idle(); -} - -void hard_reset_now (void); - -void machine_restart(char *cmd) -{ - hard_reset_now(); -} - -/* - * Similar to machine_power_off, but don't shut off power. Add code - * here to freeze the system for e.g. post-mortem debug purpose when - * possible. This halt has nothing to do with the idle halt. - */ - -void machine_halt(void) -{ -} - -/* If or when software power-off is implemented, add code here. */ - -void machine_power_off(void) -{ -} - -/* - * When a process does an "exec", machine state like FPU and debug - * registers need to be reset. This is a hook function for that. - * Currently we don't have any such state to reset, so this is empty. - */ - -void flush_thread(void) -{ -} - -/* Fill in the fpu structure for a core dump. */ -int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu) -{ - return 0; -} diff --git a/arch/cris/kernel/profile.c b/arch/cris/kernel/profile.c deleted file mode 100644 index d2f978ad129a..000000000000 --- a/arch/cris/kernel/profile.c +++ /dev/null @@ -1,87 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include <linux/init.h> -#include <linux/errno.h> -#include <linux/kernel.h> -#include <linux/proc_fs.h> -#include <linux/slab.h> -#include <linux/types.h> -#include <asm/ptrace.h> -#include <linux/uaccess.h> - -#define SAMPLE_BUFFER_SIZE 8192 - -static char *sample_buffer; -static char *sample_buffer_pos; -static int prof_running = 0; - -void cris_profile_sample(struct pt_regs *regs) -{ - if (!prof_running) - return; - - if (user_mode(regs)) - *(unsigned int*)sample_buffer_pos = current->pid; - else - *(unsigned int*)sample_buffer_pos = 0; - - *(unsigned int *)(sample_buffer_pos + 4) = instruction_pointer(regs); - sample_buffer_pos += 8; - - if (sample_buffer_pos == sample_buffer + SAMPLE_BUFFER_SIZE) - sample_buffer_pos = sample_buffer; -} - -static ssize_t -read_cris_profile(struct file *file, char __user *buf, - size_t count, loff_t *ppos) -{ - unsigned long p = *ppos; - ssize_t ret; - - ret = simple_read_from_buffer(buf, count, ppos, sample_buffer, - SAMPLE_BUFFER_SIZE); - if (ret < 0) - return ret; - - memset(sample_buffer + p, 0, ret); - - return ret; -} - -static ssize_t -write_cris_profile(struct file *file, const char __user *buf, - size_t count, loff_t *ppos) -{ - sample_buffer_pos = sample_buffer; - memset(sample_buffer, 0, SAMPLE_BUFFER_SIZE); - return count < SAMPLE_BUFFER_SIZE ? count : SAMPLE_BUFFER_SIZE; -} - -static const struct file_operations cris_proc_profile_operations = { - .read = read_cris_profile, - .write = write_cris_profile, - .llseek = default_llseek, -}; - -static int __init init_cris_profile(void) -{ - struct proc_dir_entry *entry; - - sample_buffer = kmalloc(SAMPLE_BUFFER_SIZE, GFP_KERNEL); - if (!sample_buffer) { - return -ENOMEM; - } - - sample_buffer_pos = sample_buffer; - - entry = proc_create("system_profile", S_IWUSR | S_IRUGO, NULL, - &cris_proc_profile_operations); - if (entry) { - proc_set_size(entry, SAMPLE_BUFFER_SIZE); - } - prof_running = 1; - - return 0; -} -__initcall(init_cris_profile); - diff --git a/arch/cris/kernel/ptrace.c b/arch/cris/kernel/ptrace.c deleted file mode 100644 index af42789a1544..000000000000 --- a/arch/cris/kernel/ptrace.c +++ /dev/null @@ -1,68 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * linux/arch/cris/kernel/ptrace.c - * - * Parts taken from the m68k port. - * - * Copyright (c) 2000, 2001, 2002 Axis Communications AB - * - * Authors: Bjorn Wesen - * - */ - -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/mm.h> -#include <linux/smp.h> -#include <linux/errno.h> -#include <linux/ptrace.h> -#include <linux/user.h> -#include <linux/tracehook.h> - -#include <linux/uaccess.h> -#include <asm/page.h> -#include <asm/pgtable.h> -#include <asm/processor.h> - - -/* notification of userspace execution resumption - * - triggered by current->work.notify_resume - */ -extern int do_signal(int canrestart, struct pt_regs *regs); - - -void do_notify_resume(int canrestart, struct pt_regs *regs, - __u32 thread_info_flags) -{ - /* deal with pending signal delivery */ - if (thread_info_flags & _TIF_SIGPENDING) - do_signal(canrestart,regs); - - if (thread_info_flags & _TIF_NOTIFY_RESUME) { - clear_thread_flag(TIF_NOTIFY_RESUME); - tracehook_notify_resume(regs); - } -} - -void do_work_pending(int syscall, struct pt_regs *regs, - unsigned int thread_flags) -{ - do { - if (likely(thread_flags & _TIF_NEED_RESCHED)) { - schedule(); - } else { - if (unlikely(!user_mode(regs))) - return; - local_irq_enable(); - if (thread_flags & _TIF_SIGPENDING) { - do_signal(syscall, regs); - syscall = 0; - } else { - clear_thread_flag(TIF_NOTIFY_RESUME); - tracehook_notify_resume(regs); - } - } - local_irq_disable(); - thread_flags = current_thread_info()->flags; - } while (thread_flags & _TIF_WORK_MASK); -} diff --git a/arch/cris/kernel/setup.c b/arch/cris/kernel/setup.c deleted file mode 100644 index 1b61a7207afb..000000000000 --- a/arch/cris/kernel/setup.c +++ /dev/null @@ -1,214 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * - * linux/arch/cris/kernel/setup.c - * - * Copyright (C) 1995 Linus Torvalds - * Copyright (c) 2001 Axis Communications AB - */ - -/* - * This file handles the architecture-dependent parts of initialization - */ - -#include <linux/init.h> -#include <linux/mm.h> -#include <linux/bootmem.h> -#include <asm/pgtable.h> -#include <linux/seq_file.h> -#include <linux/screen_info.h> -#include <linux/utsname.h> -#include <linux/pfn.h> -#include <linux/cpu.h> -#include <linux/of.h> -#include <linux/of_fdt.h> -#include <asm/setup.h> -#include <arch/system.h> -#include <asm/sections.h> - -/* - * Setup options - */ -struct screen_info screen_info; - -extern int root_mountflags; - -char __initdata cris_command_line[COMMAND_LINE_SIZE] = { 0, }; - -extern const unsigned long text_start, edata; /* set by the linker script */ -extern unsigned long dram_start, dram_end; - -extern unsigned long romfs_start, romfs_length, romfs_in_flash; /* from head.S */ - -static struct cpu cpu_devices[NR_CPUS]; - -extern void show_etrax_copyright(void); /* arch-vX/kernel/setup.c */ - -/* This mainly sets up the memory area, and can be really confusing. - * - * The physical DRAM is virtually mapped into dram_start to dram_end - * (usually c0000000 to c0000000 + DRAM size). The physical address is - * given by the macro __pa(). - * - * In this DRAM, the kernel code and data is loaded, in the beginning. - * It really starts at c0004000 to make room for some special pages - - * the start address is text_start. The kernel data ends at _end. After - * this the ROM filesystem is appended (if there is any). - * - * Between this address and dram_end, we have RAM pages usable to the - * boot code and the system. - * - */ - -void __init setup_arch(char **cmdline_p) -{ - extern void init_etrax_debug(void); - unsigned long bootmap_size; - unsigned long start_pfn, max_pfn; - unsigned long memory_start; - -#ifdef CONFIG_OF - early_init_dt_scan(__dtb_start); -#endif - - /* register an initial console printing routine for printk's */ - - init_etrax_debug(); - - /* we should really poll for DRAM size! */ - - high_memory = &dram_end; - - if(romfs_in_flash || !romfs_length) { - /* if we have the romfs in flash, or if there is no rom filesystem, - * our free area starts directly after the BSS - */ - memory_start = (unsigned long) &_end; - } else { - /* otherwise the free area starts after the ROM filesystem */ - printk("ROM fs in RAM, size %lu bytes\n", romfs_length); - memory_start = romfs_start + romfs_length; - } - - /* process 1's initial memory region is the kernel code/data */ - - init_mm.start_code = (unsigned long) &text_start; - init_mm.end_code = (unsigned long) &_etext; - init_mm.end_data = (unsigned long) &_edata; - init_mm.brk = (unsigned long) &_end; - - /* min_low_pfn points to the start of DRAM, start_pfn points - * to the first DRAM pages after the kernel, and max_low_pfn - * to the end of DRAM. - */ - - /* - * partially used pages are not usable - thus - * we are rounding upwards: - */ - - start_pfn = PFN_UP(memory_start); /* usually c0000000 + kernel + romfs */ - max_pfn = PFN_DOWN((unsigned long)high_memory); /* usually c0000000 + dram size */ - - /* - * Initialize the boot-time allocator (start, end) - * - * We give it access to all our DRAM, but we could as well just have - * given it a small slice. No point in doing that though, unless we - * have non-contiguous memory and want the boot-stuff to be in, say, - * the smallest area. - * - * It will put a bitmap of the allocated pages in the beginning - * of the range we give it, but it won't mark the bitmaps pages - * as reserved. We have to do that ourselves below. - * - * We need to use init_bootmem_node instead of init_bootmem - * because our map starts at a quite high address (min_low_pfn). - */ - - max_low_pfn = max_pfn; - min_low_pfn = PAGE_OFFSET >> PAGE_SHIFT; - - bootmap_size = init_bootmem_node(NODE_DATA(0), start_pfn, - min_low_pfn, - max_low_pfn); - - /* And free all memory not belonging to the kernel (addr, size) */ - - free_bootmem(PFN_PHYS(start_pfn), PFN_PHYS(max_pfn - start_pfn)); - - /* - * Reserve the bootmem bitmap itself as well. We do this in two - * steps (first step was init_bootmem()) because this catches - * the (very unlikely) case of us accidentally initializing the - * bootmem allocator with an invalid RAM area. - * - * Arguments are start, size - */ - - reserve_bootmem(PFN_PHYS(start_pfn), bootmap_size, BOOTMEM_DEFAULT); - - unflatten_and_copy_device_tree(); - - /* paging_init() sets up the MMU and marks all pages as reserved */ - - paging_init(); - - *cmdline_p = cris_command_line; - -#ifdef CONFIG_ETRAX_CMDLINE - if (!strcmp(cris_command_line, "")) { - strlcpy(cris_command_line, CONFIG_ETRAX_CMDLINE, COMMAND_LINE_SIZE); - cris_command_line[COMMAND_LINE_SIZE - 1] = '\0'; - } -#endif - - /* Save command line for future references. */ - memcpy(boot_command_line, cris_command_line, COMMAND_LINE_SIZE); - boot_command_line[COMMAND_LINE_SIZE - 1] = '\0'; - - /* give credit for the CRIS port */ - show_etrax_copyright(); - - /* Setup utsname */ - strcpy(init_utsname()->machine, cris_machine_name); -} - -#ifdef CONFIG_PROC_FS -static void *c_start(struct seq_file *m, loff_t *pos) -{ - return *pos < nr_cpu_ids ? (void *)(int)(*pos + 1) : NULL; -} - -static void *c_next(struct seq_file *m, void *v, loff_t *pos) -{ - ++*pos; - return c_start(m, pos); -} - -static void c_stop(struct seq_file *m, void *v) -{ -} - -extern int show_cpuinfo(struct seq_file *m, void *v); - -const struct seq_operations cpuinfo_op = { - .start = c_start, - .next = c_next, - .stop = c_stop, - .show = show_cpuinfo, -}; -#endif /* CONFIG_PROC_FS */ - -static int __init topology_init(void) -{ - int i; - - for_each_possible_cpu(i) { - return register_cpu(&cpu_devices[i], i); - } - - return 0; -} - -subsys_initcall(topology_init); diff --git a/arch/cris/kernel/stacktrace.c b/arch/cris/kernel/stacktrace.c deleted file mode 100644 index f1cc3aaacd8d..000000000000 --- a/arch/cris/kernel/stacktrace.c +++ /dev/null @@ -1,76 +0,0 @@ -#include <linux/sched.h> -#include <linux/sched/debug.h> -#include <linux/stacktrace.h> -#include <asm/stacktrace.h> - -void walk_stackframe(unsigned long sp, - int (*fn)(unsigned long addr, void *data), - void *data) -{ - unsigned long high = ALIGN(sp, THREAD_SIZE); - - for (; sp <= high - 4; sp += 4) { - unsigned long addr = *(unsigned long *) sp; - - if (!kernel_text_address(addr)) - continue; - - if (fn(addr, data)) - break; - } -} - -struct stack_trace_data { - struct stack_trace *trace; - unsigned int no_sched_functions; - unsigned int skip; -}; - -#ifdef CONFIG_STACKTRACE - -static int save_trace(unsigned long addr, void *d) -{ - struct stack_trace_data *data = d; - struct stack_trace *trace = data->trace; - - if (data->no_sched_functions && in_sched_functions(addr)) - return 0; - - if (data->skip) { - data->skip--; - return 0; - } - - trace->entries[trace->nr_entries++] = addr; - - return trace->nr_entries >= trace->max_entries; -} - -void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace) -{ - struct stack_trace_data data; - unsigned long sp; - - data.trace = trace; - data.skip = trace->skip; - - if (tsk != current) { - data.no_sched_functions = 1; - sp = tsk->thread.ksp; - } else { - data.no_sched_functions = 0; - sp = rdsp(); - } - - walk_stackframe(sp, save_trace, &data); - if (trace->nr_entries < trace->max_entries) - trace->entries[trace->nr_entries++] = ULONG_MAX; -} - -void save_stack_trace(struct stack_trace *trace) -{ - save_stack_trace_tsk(current, trace); -} -EXPORT_SYMBOL_GPL(save_stack_trace); - -#endif /* CONFIG_STACKTRACE */ diff --git a/arch/cris/kernel/sys_cris.c b/arch/cris/kernel/sys_cris.c deleted file mode 100644 index ecea13f1d760..000000000000 --- a/arch/cris/kernel/sys_cris.c +++ /dev/null @@ -1,36 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* $Id: sys_cris.c,v 1.6 2004/03/11 11:38:40 starvik Exp $ - * - * linux/arch/cris/kernel/sys_cris.c - * - * This file contains various random system calls that - * have a non-standard calling sequence on some platforms. - * Since we don't have to do any backwards compatibility, our - * versions are done in the most "normal" way possible. - * - */ - -#include <linux/errno.h> -#include <linux/sched.h> -#include <linux/syscalls.h> -#include <linux/mm.h> -#include <linux/fs.h> -#include <linux/smp.h> -#include <linux/sem.h> -#include <linux/msg.h> -#include <linux/shm.h> -#include <linux/stat.h> -#include <linux/mman.h> -#include <linux/file.h> -#include <linux/ipc.h> - -#include <linux/uaccess.h> -#include <asm/segment.h> - -asmlinkage long -sys_mmap2(unsigned long addr, unsigned long len, unsigned long prot, - unsigned long flags, unsigned long fd, unsigned long pgoff) -{ - /* bug(?): 8Kb pages here */ - return sys_mmap_pgoff(addr, len, prot, flags, fd, pgoff); -} diff --git a/arch/cris/kernel/time.c b/arch/cris/kernel/time.c deleted file mode 100644 index 593239274f98..000000000000 --- a/arch/cris/kernel/time.c +++ /dev/null @@ -1,73 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * linux/arch/cris/kernel/time.c - * - * Copyright (C) 1991, 1992, 1995 Linus Torvalds - * Copyright (C) 1999, 2000, 2001 Axis Communications AB - * - * 1994-07-02 Alan Modra - * fixed set_rtc_mmss, fixed time.year for >= 2000, new mktime - * 1995-03-26 Markus Kuhn - * fixed 500 ms bug at call to set_rtc_mmss, fixed DS12887 - * precision CMOS clock update - * 1996-05-03 Ingo Molnar - * fixed time warps in do_[slow|fast]_gettimeoffset() - * 1997-09-10 Updated NTP code according to technical memorandum Jan '96 - * "A Kernel Model for Precision Timekeeping" by Dave Mills - * - * Linux/CRIS specific code: - * - * Authors: Bjorn Wesen - * Johan Adolfsson - * - */ - -#include <linux/errno.h> -#include <linux/module.h> -#include <linux/param.h> -#include <linux/jiffies.h> -#include <linux/bcd.h> -#include <linux/timex.h> -#include <linux/init.h> -#include <linux/profile.h> -#include <linux/sched/clock.h> - - -#define D(x) - -#define TICK_SIZE tick - -extern unsigned long loops_per_jiffy; /* init/main.c */ -unsigned long loops_per_usec; - -extern void cris_profile_sample(struct pt_regs* regs); - -void -cris_do_profile(struct pt_regs* regs) -{ - -#ifdef CONFIG_SYSTEM_PROFILER - cris_profile_sample(regs); -#endif - -#ifdef CONFIG_PROFILING - profile_tick(CPU_PROFILING); -#endif -} - -#ifndef CONFIG_GENERIC_SCHED_CLOCK -unsigned long long sched_clock(void) -{ - return (unsigned long long)jiffies * (NSEC_PER_SEC / HZ) + - get_ns_in_jiffie(); -} -#endif - -static int -__init init_udelay(void) -{ - loops_per_usec = (loops_per_jiffy * HZ) / 1000000; - return 0; -} - -__initcall(init_udelay); diff --git a/arch/cris/kernel/traps.c b/arch/cris/kernel/traps.c deleted file mode 100644 index d4bc80469218..000000000000 --- a/arch/cris/kernel/traps.c +++ /dev/null @@ -1,241 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * linux/arch/cris/traps.c - * - * Here we handle the break vectors not used by the system call - * mechanism, as well as some general stack/register dumping - * things. - * - * Copyright (C) 2000-2007 Axis Communications AB - * - * Authors: Bjorn Wesen - * Hans-Peter Nilsson - * - */ - -#include <linux/init.h> -#include <linux/module.h> -#include <linux/utsname.h> -#include <linux/sched/debug.h> -#ifdef CONFIG_KALLSYMS -#include <linux/kallsyms.h> -#endif - -#include <asm/pgtable.h> -#include <linux/uaccess.h> -#include <arch/system.h> - -extern void arch_enable_nmi(void); -extern void stop_watchdog(void); -extern void reset_watchdog(void); -extern void show_registers(struct pt_regs *regs); - -#ifdef CONFIG_DEBUG_BUGVERBOSE -extern void handle_BUG(struct pt_regs *regs); -#else -#define handle_BUG(regs) -#endif - -static int kstack_depth_to_print = 24; - -void (*nmi_handler)(struct pt_regs *); - -void show_trace(unsigned long *stack) -{ - unsigned long addr, module_start, module_end; - extern char _stext[], _etext[]; - int i; - - pr_err("\nCall Trace: "); - - i = 1; - module_start = VMALLOC_START; - module_end = VMALLOC_END; - - while (((long)stack & (THREAD_SIZE - 1)) != 0) { - if (__get_user(addr, stack)) { - /* This message matches "failing address" marked - s390 in ksymoops, so lines containing it will - not be filtered out by ksymoops. */ - pr_err("Failing address 0x%lx\n", (unsigned long)stack); - break; - } - stack++; - - /* - * If the address is either in the text segment of the - * kernel, or in the region which contains vmalloc'ed - * memory, it *may* be the address of a calling - * routine; if so, print it so that someone tracing - * down the cause of the crash will be able to figure - * out the call path that was taken. - */ - if (((addr >= (unsigned long)_stext) && - (addr <= (unsigned long)_etext)) || - ((addr >= module_start) && (addr <= module_end))) { -#ifdef CONFIG_KALLSYMS - print_ip_sym(addr); -#else - if (i && ((i % 8) == 0)) - pr_err("\n "); - pr_err("[<%08lx>] ", addr); - i++; -#endif - } - } -} - -/* - * These constants are for searching for possible module text - * segments. MODULE_RANGE is a guess of how much space is likely - * to be vmalloced. - */ - -#define MODULE_RANGE (8*1024*1024) - -/* - * The output (format, strings and order) is adjusted to be usable with - * ksymoops-2.4.1 with some necessary CRIS-specific patches. Please don't - * change it unless you're serious about adjusting ksymoops and syncing - * with the ksymoops maintainer. - */ - -void -show_stack(struct task_struct *task, unsigned long *sp) -{ - unsigned long *stack, addr; - int i; - - /* - * debugging aid: "show_stack(NULL);" prints a - * back trace. - */ - - if (sp == NULL) { - if (task) - sp = (unsigned long*)task->thread.ksp; - else - sp = (unsigned long*)rdsp(); - } - - stack = sp; - - pr_err("\nStack from %08lx:\n ", (unsigned long)stack); - for (i = 0; i < kstack_depth_to_print; i++) { - if (((long)stack & (THREAD_SIZE-1)) == 0) - break; - if (i && ((i % 8) == 0)) - pr_err("\n "); - if (__get_user(addr, stack)) { - /* This message matches "failing address" marked - s390 in ksymoops, so lines containing it will - not be filtered out by ksymoops. */ - pr_err("Failing address 0x%lx\n", (unsigned long)stack); - break; - } - stack++; - pr_err("%08lx ", addr); - } - show_trace(sp); -} - -#if 0 -/* displays a short stack trace */ - -int -show_stack(void) -{ - unsigned long *sp = (unsigned long *)rdusp(); - int i; - - pr_err("Stack dump [0x%08lx]:\n", (unsigned long)sp); - for (i = 0; i < 16; i++) - pr_err("sp + %d: 0x%08lx\n", i*4, sp[i]); - return 0; -} -#endif - -void set_nmi_handler(void (*handler)(struct pt_regs *)) -{ - nmi_handler = handler; - arch_enable_nmi(); -} - -#ifdef CONFIG_DEBUG_NMI_OOPS -void oops_nmi_handler(struct pt_regs *regs) -{ - stop_watchdog(); - oops_in_progress = 1; - pr_err("NMI!\n"); - show_registers(regs); - oops_in_progress = 0; - oops_exit(); - pr_err("\n"); /* Flush mtdoops. */ -} - -static int __init oops_nmi_register(void) -{ - set_nmi_handler(oops_nmi_handler); - return 0; -} - -__initcall(oops_nmi_register); - -#endif - -/* - * This gets called from entry.S when the watchdog has bitten. Show something - * similar to an Oops dump, and if the kernel is configured to be a nice - * doggy, then halt instead of reboot. - */ -void watchdog_bite_hook(struct pt_regs *regs) -{ -#ifdef CONFIG_ETRAX_WATCHDOG_NICE_DOGGY - local_irq_disable(); - stop_watchdog(); - show_registers(regs); - - while (1) - ; /* Do nothing. */ -#else - show_registers(regs); -#endif -} - -/* This is normally the Oops function. */ -void die_if_kernel(const char *str, struct pt_regs *regs, long err) -{ - if (user_mode(regs)) - return; - -#ifdef CONFIG_ETRAX_WATCHDOG_NICE_DOGGY - /* - * This printout might take too long and could trigger - * the watchdog normally. If NICE_DOGGY is set, simply - * stop the watchdog during the printout. - */ - stop_watchdog(); -#endif - - oops_enter(); - handle_BUG(regs); - - pr_err("Linux %s %s\n", utsname()->release, utsname()->version); - pr_err("%s: %04lx\n", str, err & 0xffff); - - show_registers(regs); - - oops_exit(); - oops_in_progress = 0; - pr_err("\n"); /* Flush mtdoops. */ - -#ifdef CONFIG_ETRAX_WATCHDOG_NICE_DOGGY - reset_watchdog(); -#endif - do_exit(SIGSEGV); -} - -void __init trap_init(void) -{ - /* Nothing needs to be done */ -} diff --git a/arch/cris/kernel/vmlinux.lds.S b/arch/cris/kernel/vmlinux.lds.S deleted file mode 100644 index 9b232e0f673e..000000000000 --- a/arch/cris/kernel/vmlinux.lds.S +++ /dev/null @@ -1,138 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* ld script to make the Linux/CRIS kernel - * Authors: Bjorn Wesen (bjornw@axis.com) - * - * It is VERY DANGEROUS to fiddle around with the symbols in this - * script. It is for example quite vital that all generated sections - * that are used are actually named here, otherwise the linker will - * put them at the end, where the init stuff is which is FREED after - * the kernel has booted. - */ - -#include <asm-generic/vmlinux.lds.h> -#include <asm/page.h> -#include <asm/thread_info.h> - -#ifdef CONFIG_ETRAX_VMEM_SIZE -#define __CONFIG_ETRAX_VMEM_SIZE CONFIG_ETRAX_VMEM_SIZE -#else -#define __CONFIG_ETRAX_VMEM_SIZE 0 -#endif - - -jiffies = jiffies_64; -SECTIONS -{ - . = DRAM_VIRTUAL_BASE; - dram_start = .; -#ifdef CONFIG_ETRAX_ARCH_V10 - ibr_start = .; -#else - ebp_start = .; - /* The boot section is only necessary until the VCS top */ - /* level testbench includes both flash and DRAM. */ - .boot : { *(.boot) } -#endif - - /* see head.S and pages reserved at the start */ - . = DRAM_VIRTUAL_BASE + 0x4000; - - _text = .; /* Text and read-only data. */ - text_start = .; /* Lots of aliases. */ - _stext = .; - __stext = .; - .text : { - HEAD_TEXT - TEXT_TEXT - SCHED_TEXT - CPUIDLE_TEXT - LOCK_TEXT - *(.fixup) - *(.text.__*) - } - - _etext = . ; /* End of text section. */ - __etext = .; - - EXCEPTION_TABLE(4) - - _sdata = .; - RODATA - - . = ALIGN (4); - ___data_start = . ; - __Sdata = . ; - .data : { /* Data */ - CACHELINE_ALIGNED_DATA(32) - READ_MOSTLY_DATA(32) - DATA_DATA - } - __edata = . ; /* End of data section. */ - _edata = . ; - - BUG_TABLE - - INIT_TASK_DATA_SECTION(PAGE_SIZE) - - . = ALIGN(PAGE_SIZE); /* Init code and data. */ - __init_begin = .; - INIT_TEXT_SECTION(PAGE_SIZE) - .init.data : { INIT_DATA } - .init.setup : { INIT_SETUP(16) } - .initcall.init : { - INIT_CALLS - } - - .con_initcall.init : { - CON_INITCALL - } - SECURITY_INIT - - /* .exit.text is discarded at runtime, not link time, - * to deal with references from __bug_table - */ - .exit.text : { - EXIT_TEXT - } - .exit.data : { - EXIT_DATA - } - -#ifdef CONFIG_ETRAX_ARCH_V10 -#ifdef CONFIG_BLK_DEV_INITRD - .init.ramfs : { - __initramfs_start = .; - *(.init.ramfs) - __initramfs_end = .; - } -#endif -#endif - __vmlinux_end = .; /* Last address of the physical file. */ -#ifdef CONFIG_ETRAX_ARCH_V32 - PERCPU_SECTION(32) - - .init.ramfs : { - INIT_RAM_FS - } -#endif - - /* - * We fill to the next page, so we can discard all init - * pages without needing to consider what payload might be - * appended to the kernel image. - */ - . = ALIGN(PAGE_SIZE); - - __init_end = .; - - __data_end = . ; /* Move to _edata ? */ - BSS_SECTION(1, 1, 1) - - . = ALIGN (0x20); - _end = .; - __end = .; - - dram_end = dram_start + (CONFIG_ETRAX_DRAM_SIZE - __CONFIG_ETRAX_VMEM_SIZE)*1024*1024; - - DISCARDS -} |