diff options
Diffstat (limited to 'arch/sh')
-rw-r--r-- | arch/sh/Kconfig | 6 | ||||
-rw-r--r-- | arch/sh/Makefile | 3 | ||||
-rw-r--r-- | arch/sh/boards/mach-landisk/gio.c | 10 | ||||
-rw-r--r-- | arch/sh/boards/mach-rsk/devices-rsk7203.c | 4 | ||||
-rw-r--r-- | arch/sh/boards/mach-rsk/setup.c | 23 | ||||
-rw-r--r-- | arch/sh/boot/Makefile | 6 | ||||
-rw-r--r-- | arch/sh/include/asm/rwsem.h | 2 | ||||
-rw-r--r-- | arch/sh/kernel/cpu/irq/imask.c | 2 | ||||
-rw-r--r-- | arch/sh/kernel/cpu/irq/intc-sh5.c | 2 | ||||
-rw-r--r-- | arch/sh/kernel/dwarf.c | 24 | ||||
-rw-r--r-- | arch/sh/kernel/entry-common.S | 2 | ||||
-rw-r--r-- | arch/sh/kernel/ftrace.c | 37 | ||||
-rw-r--r-- | arch/sh/kernel/irq.c | 3 | ||||
-rw-r--r-- | arch/sh/kernel/setup.c | 2 | ||||
-rw-r--r-- | arch/sh/kernel/sh_ksyms_32.c | 14 | ||||
-rw-r--r-- | arch/sh/kernel/signal_32.c | 9 | ||||
-rw-r--r-- | arch/sh/kernel/smp.c | 2 | ||||
-rw-r--r-- | arch/sh/kernel/traps_32.c | 7 | ||||
-rw-r--r-- | arch/sh/mm/Kconfig | 2 | ||||
-rw-r--r-- | arch/sh/mm/cache-sh4.c | 27 | ||||
-rw-r--r-- | arch/sh/mm/cache.c | 12 |
21 files changed, 138 insertions, 61 deletions
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index b940424..88cdeb9 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -37,7 +37,6 @@ config SUPERH32 select HAVE_FTRACE_MCOUNT_RECORD select HAVE_DYNAMIC_FTRACE select HAVE_FUNCTION_TRACE_MCOUNT_TEST - select HAVE_FTRACE_SYSCALLS select HAVE_FUNCTION_GRAPH_TRACER select HAVE_ARCH_KGDB select ARCH_HIBERNATION_POSSIBLE if MMU @@ -122,6 +121,9 @@ config SYS_SUPPORTS_APM_EMULATION bool select ARCH_SUSPEND_POSSIBLE +config SYS_SUPPORTS_HUGETLBFS + bool + config SYS_SUPPORTS_SMP bool @@ -196,6 +198,7 @@ config CPU_SH4 select CPU_HAS_SR_RB select CPU_HAS_FPU if !CPU_SH4AL_DSP select SYS_SUPPORTS_TMU + select SYS_SUPPORTS_HUGETLBFS if MMU config CPU_SH4A bool @@ -210,6 +213,7 @@ config CPU_SH5 bool select CPU_HAS_FPU select SYS_SUPPORTS_TMU + select SYS_SUPPORTS_HUGETLBFS if MMU config CPU_SHX2 bool diff --git a/arch/sh/Makefile b/arch/sh/Makefile index fc51a91..66e40aa 100644 --- a/arch/sh/Makefile +++ b/arch/sh/Makefile @@ -199,7 +199,7 @@ endif libs-$(CONFIG_SUPERH32) := arch/sh/lib/ $(libs-y) libs-$(CONFIG_SUPERH64) := arch/sh/lib64/ $(libs-y) -BOOT_TARGETS = uImage uImage.bz2 uImage.gz uImage.lzma uImage.srec \ +BOOT_TARGETS = uImage uImage.bz2 uImage.gz uImage.lzma uImage.srec uImage.bin \ zImage vmlinux.srec romImage PHONY += maketools $(BOOT_TARGETS) FORCE @@ -225,6 +225,7 @@ define archhelp @echo ' vmlinux.srec - Create an ELF S-record' @echo '* uImage - Alias to bootable U-Boot image' @echo ' uImage.srec - Create an S-record for U-Boot' + @echo ' uImage.bin - Kernel-only image for U-Boot (bin)' @echo '* uImage.gz - Kernel-only image for U-Boot (gzip)' @echo ' uImage.bz2 - Kernel-only image for U-Boot (bzip2)' @echo ' uImage.lzma - Kernel-only image for U-Boot (lzma)' diff --git a/arch/sh/boards/mach-landisk/gio.c b/arch/sh/boards/mach-landisk/gio.c index 25cdf735..5280131 100644 --- a/arch/sh/boards/mach-landisk/gio.c +++ b/arch/sh/boards/mach-landisk/gio.c @@ -14,7 +14,6 @@ */ #include <linux/module.h> #include <linux/init.h> -#include <linux/smp_lock.h> #include <linux/kdev_t.h> #include <linux/cdev.h> #include <linux/fs.h> @@ -35,7 +34,7 @@ static int gio_open(struct inode *inode, struct file *filp) int minor; int ret = -ENOENT; - lock_kernel(); + preempt_disable(); minor = MINOR(inode->i_rdev); if (minor < DEVCOUNT) { if (openCnt > 0) { @@ -45,7 +44,7 @@ static int gio_open(struct inode *inode, struct file *filp) ret = 0; } } - unlock_kernel(); + preempt_enable(); return ret; } @@ -60,8 +59,7 @@ static int gio_close(struct inode *inode, struct file *filp) return 0; } -static int gio_ioctl(struct inode *inode, struct file *filp, - unsigned int cmd, unsigned long arg) +static long gio_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) { unsigned int data; static unsigned int addr = 0; @@ -129,7 +127,7 @@ static const struct file_operations gio_fops = { .owner = THIS_MODULE, .open = gio_open, /* open */ .release = gio_close, /* release */ - .ioctl = gio_ioctl, /* ioctl */ + .unlocked_ioctl = gio_ioctl, }; static int __init gio_init(void) diff --git a/arch/sh/boards/mach-rsk/devices-rsk7203.c b/arch/sh/boards/mach-rsk/devices-rsk7203.c index 4af3a77..c37617e 100644 --- a/arch/sh/boards/mach-rsk/devices-rsk7203.c +++ b/arch/sh/boards/mach-rsk/devices-rsk7203.c @@ -11,10 +11,6 @@ #include <linux/types.h> #include <linux/platform_device.h> #include <linux/interrupt.h> -#include <linux/mtd/mtd.h> -#include <linux/mtd/partitions.h> -#include <linux/mtd/physmap.h> -#include <linux/mtd/map.h> #include <linux/smsc911x.h> #include <linux/gpio.h> #include <linux/leds.h> diff --git a/arch/sh/boards/mach-rsk/setup.c b/arch/sh/boards/mach-rsk/setup.c index af64d03..a5c0df7 100644 --- a/arch/sh/boards/mach-rsk/setup.c +++ b/arch/sh/boards/mach-rsk/setup.c @@ -15,14 +15,12 @@ #include <linux/mtd/mtd.h> #include <linux/mtd/partitions.h> #include <linux/mtd/physmap.h> +#ifdef CONFIG_MTD #include <linux/mtd/map.h> +#endif #include <asm/machvec.h> #include <asm/io.h> -static const char *probes[] = { "cmdlinepart", NULL }; - -static struct mtd_partition *parsed_partitions; - static struct mtd_partition rsk_partitions[] = { { .name = "Bootloader", @@ -41,6 +39,8 @@ static struct mtd_partition rsk_partitions[] = { }; static struct physmap_flash_data flash_data = { + .parts = rsk_partitions, + .nr_parts = ARRAY_SIZE(rsk_partitions), .width = 2, }; @@ -60,7 +60,8 @@ static struct platform_device flash_device = { }, }; -static struct mtd_info *flash_mtd; +#ifdef CONFIG_MTD +static const char *probes[] = { "cmdlinepart", NULL }; static struct map_info rsk_flash_map = { .name = "RSK+ Flash", @@ -68,6 +69,10 @@ static struct map_info rsk_flash_map = { .bankwidth = 2, }; +static struct mtd_info *flash_mtd; + +static struct mtd_partition *parsed_partitions; + static void __init set_mtd_partitions(void) { int nr_parts = 0; @@ -77,14 +82,14 @@ static void __init set_mtd_partitions(void) nr_parts = parse_mtd_partitions(flash_mtd, probes, &parsed_partitions, 0); /* If there is no partition table, used the hard coded table */ - if (nr_parts <= 0) { - flash_data.parts = rsk_partitions; - flash_data.nr_parts = ARRAY_SIZE(rsk_partitions); - } else { + if (nr_parts > 0) { flash_data.nr_parts = nr_parts; flash_data.parts = parsed_partitions; } } +#else +static inline void set_mtd_partitions(void) {} +#endif static struct platform_device *rsk_devices[] __initdata = { &flash_device, diff --git a/arch/sh/boot/Makefile b/arch/sh/boot/Makefile index a131687..cb8cf55 100644 --- a/arch/sh/boot/Makefile +++ b/arch/sh/boot/Makefile @@ -20,11 +20,12 @@ CONFIG_BOOT_LINK_OFFSET ?= 0x00800000 CONFIG_ZERO_PAGE_OFFSET ?= 0x00001000 CONFIG_ENTRY_OFFSET ?= 0x00001000 +suffix-y := bin suffix-$(CONFIG_KERNEL_GZIP) := gz suffix-$(CONFIG_KERNEL_BZIP2) := bz2 suffix-$(CONFIG_KERNEL_LZMA) := lzma -targets := zImage vmlinux.srec romImage uImage uImage.srec uImage.gz uImage.bz2 uImage.lzma +targets := zImage vmlinux.srec romImage uImage uImage.srec uImage.gz uImage.bz2 uImage.lzma uImage.bin extra-y += vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma subdir- := compressed romimage @@ -88,6 +89,9 @@ $(obj)/uImage.gz: $(obj)/vmlinux.bin.gz $(obj)/uImage.lzma: $(obj)/vmlinux.bin.lzma $(call if_changed,uimage,lzma) +$(obj)/uImage.bin: $(obj)/vmlinux.bin + $(call if_changed,uimage,none) + OBJCOPYFLAGS_vmlinux.srec := -I binary -O srec $(obj)/vmlinux.srec: $(obj)/compressed/vmlinux $(call if_changed,objcopy) diff --git a/arch/sh/include/asm/rwsem.h b/arch/sh/include/asm/rwsem.h index 1987f3e..06e2251 100644 --- a/arch/sh/include/asm/rwsem.h +++ b/arch/sh/include/asm/rwsem.h @@ -41,7 +41,7 @@ struct rw_semaphore { #endif #define __RWSEM_INITIALIZER(name) \ - { RWSEM_UNLOCKED_VALUE, SPIN_LOCK_UNLOCKED, \ + { RWSEM_UNLOCKED_VALUE, __SPIN_LOCK_UNLOCKED((name).wait_lock), \ LIST_HEAD_INIT((name).wait_list) \ __RWSEM_DEP_MAP_INIT(name) } diff --git a/arch/sh/kernel/cpu/irq/imask.c b/arch/sh/kernel/cpu/irq/imask.c index 6b5d191..a351ed8 100644 --- a/arch/sh/kernel/cpu/irq/imask.c +++ b/arch/sh/kernel/cpu/irq/imask.c @@ -68,7 +68,7 @@ static void unmask_imask_irq(unsigned int irq) } static struct irq_chip imask_irq_chip = { - .typename = "SR.IMASK", + .name = "SR.IMASK", .mask = mask_imask_irq, .unmask = unmask_imask_irq, .mask_ack = mask_imask_irq, diff --git a/arch/sh/kernel/cpu/irq/intc-sh5.c b/arch/sh/kernel/cpu/irq/intc-sh5.c index 6c092f1..06e7e29 100644 --- a/arch/sh/kernel/cpu/irq/intc-sh5.c +++ b/arch/sh/kernel/cpu/irq/intc-sh5.c @@ -85,7 +85,7 @@ static void mask_and_ack_intc(unsigned int); static void end_intc_irq(unsigned int irq); static struct irq_chip intc_irq_type = { - .typename = "INTC", + .name = "INTC", .startup = startup_intc_irq, .shutdown = shutdown_intc_irq, .enable = enable_intc_irq, diff --git a/arch/sh/kernel/dwarf.c b/arch/sh/kernel/dwarf.c index 03b3616..d76a231 100644 --- a/arch/sh/kernel/dwarf.c +++ b/arch/sh/kernel/dwarf.c @@ -20,6 +20,7 @@ #include <linux/list.h> #include <linux/mempool.h> #include <linux/mm.h> +#include <linux/ftrace.h> #include <asm/dwarf.h> #include <asm/unwinder.h> #include <asm/sections.h> @@ -554,9 +555,30 @@ struct dwarf_frame * dwarf_unwind_stack(unsigned long pc, * NOTE: the return address is guaranteed to be setup by the * time this function makes its first function call. */ - if (!pc && !prev) + if (!pc || !prev) pc = (unsigned long)current_text_addr(); +#ifdef CONFIG_FUNCTION_GRAPH_TRACER + /* + * If our stack has been patched by the function graph tracer + * then we might see the address of return_to_handler() where we + * expected to find the real return address. + */ + if (pc == (unsigned long)&return_to_handler) { + int index = current->curr_ret_stack; + + /* + * We currently have no way of tracking how many + * return_to_handler()'s we've seen. If there is more + * than one patched return address on our stack, + * complain loudly. + */ + WARN_ON(index > 0); + + pc = current->ret_stack[index].ret; + } +#endif + frame = mempool_alloc(dwarf_frame_pool, GFP_ATOMIC); if (!frame) { printk(KERN_ERR "Unable to allocate a dwarf frame\n"); diff --git a/arch/sh/kernel/entry-common.S b/arch/sh/kernel/entry-common.S index 68d9223..3eb8493 100644 --- a/arch/sh/kernel/entry-common.S +++ b/arch/sh/kernel/entry-common.S @@ -121,7 +121,7 @@ noresched: ENTRY(resume_userspace) ! r8: current_thread_info cli - TRACE_IRQS_OfF + TRACE_IRQS_OFF mov.l @(TI_FLAGS,r8), r0 ! current_thread_info->flags tst #(_TIF_WORK_MASK & 0xff), r0 bt/s __restore_all diff --git a/arch/sh/kernel/ftrace.c b/arch/sh/kernel/ftrace.c index a3dcc6d..2c48e26 100644 --- a/arch/sh/kernel/ftrace.c +++ b/arch/sh/kernel/ftrace.c @@ -291,31 +291,48 @@ struct syscall_metadata *syscall_nr_to_meta(int nr) return syscalls_metadata[nr]; } -void arch_init_ftrace_syscalls(void) +int syscall_name_to_nr(char *name) +{ + int i; + + if (!syscalls_metadata) + return -1; + for (i = 0; i < NR_syscalls; i++) + if (syscalls_metadata[i]) + if (!strcmp(syscalls_metadata[i]->name, name)) + return i; + return -1; +} + +void set_syscall_enter_id(int num, int id) +{ + syscalls_metadata[num]->enter_id = id; +} + +void set_syscall_exit_id(int num, int id) +{ + syscalls_metadata[num]->exit_id = id; +} + +static int __init arch_init_ftrace_syscalls(void) { int i; struct syscall_metadata *meta; unsigned long **psys_syscall_table = &sys_call_table; - static atomic_t refs; - - if (atomic_inc_return(&refs) != 1) - goto end; syscalls_metadata = kzalloc(sizeof(*syscalls_metadata) * FTRACE_SYSCALL_MAX, GFP_KERNEL); if (!syscalls_metadata) { WARN_ON(1); - return; + return -ENOMEM; } for (i = 0; i < FTRACE_SYSCALL_MAX; i++) { meta = find_syscall_meta(psys_syscall_table[i]); syscalls_metadata[i] = meta; } - return; - /* Paranoid: avoid overflow */ -end: - atomic_dec(&refs); + return 0; } +arch_initcall(arch_init_ftrace_syscalls); #endif /* CONFIG_FTRACE_SYSCALLS */ diff --git a/arch/sh/kernel/irq.c b/arch/sh/kernel/irq.c index 7cb933b..eac7da7 100644 --- a/arch/sh/kernel/irq.c +++ b/arch/sh/kernel/irq.c @@ -11,6 +11,7 @@ #include <linux/module.h> #include <linux/kernel_stat.h> #include <linux/seq_file.h> +#include <linux/ftrace.h> #include <asm/processor.h> #include <asm/machvec.h> #include <asm/uaccess.h> @@ -106,7 +107,7 @@ static union irq_ctx *hardirq_ctx[NR_CPUS] __read_mostly; static union irq_ctx *softirq_ctx[NR_CPUS] __read_mostly; #endif -asmlinkage int do_IRQ(unsigned int irq, struct pt_regs *regs) +asmlinkage __irq_entry int do_IRQ(unsigned int irq, struct pt_regs *regs) { struct pt_regs *old_regs = set_irq_regs(regs); #ifdef CONFIG_IRQSTACKS diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c index f9d44f8..99b4fb5 100644 --- a/arch/sh/kernel/setup.c +++ b/arch/sh/kernel/setup.c @@ -549,6 +549,8 @@ static int show_cpuinfo(struct seq_file *m, void *v) if (cpu == 0) seq_printf(m, "machine\t\t: %s\n", get_system_type()); + else + seq_printf(m, "\n"); seq_printf(m, "processor\t: %d\n", cpu); seq_printf(m, "cpu family\t: %s\n", init_utsname()->machine); diff --git a/arch/sh/kernel/sh_ksyms_32.c b/arch/sh/kernel/sh_ksyms_32.c index 86c2704..444cce3 100644 --- a/arch/sh/kernel/sh_ksyms_32.c +++ b/arch/sh/kernel/sh_ksyms_32.c @@ -85,6 +85,20 @@ DECLARE_EXPORT(__movstr_i4_even); DECLARE_EXPORT(__movstr_i4_odd); DECLARE_EXPORT(__movstrSI12_i4); DECLARE_EXPORT(__movmem); +DECLARE_EXPORT(__movmemSI8); +DECLARE_EXPORT(__movmemSI12); +DECLARE_EXPORT(__movmemSI16); +DECLARE_EXPORT(__movmemSI20); +DECLARE_EXPORT(__movmemSI24); +DECLARE_EXPORT(__movmemSI28); +DECLARE_EXPORT(__movmemSI32); +DECLARE_EXPORT(__movmemSI36); +DECLARE_EXPORT(__movmemSI40); +DECLARE_EXPORT(__movmemSI44); +DECLARE_EXPORT(__movmemSI48); +DECLARE_EXPORT(__movmemSI52); +DECLARE_EXPORT(__movmemSI56); +DECLARE_EXPORT(__movmemSI60); DECLARE_EXPORT(__movmem_i4_even); DECLARE_EXPORT(__movmem_i4_odd); DECLARE_EXPORT(__movmemSI12_i4); diff --git a/arch/sh/kernel/signal_32.c b/arch/sh/kernel/signal_32.c index 6729703..3db3742 100644 --- a/arch/sh/kernel/signal_32.c +++ b/arch/sh/kernel/signal_32.c @@ -145,7 +145,7 @@ static inline int restore_sigcontext_fpu(struct sigcontext __user *sc) { struct task_struct *tsk = current; - if (!(current_cpu_data.flags & CPU_HAS_FPU)) + if (!(boot_cpu_data.flags & CPU_HAS_FPU)) return 0; set_used_math(); @@ -158,7 +158,7 @@ static inline int save_sigcontext_fpu(struct sigcontext __user *sc, { struct task_struct *tsk = current; - if (!(current_cpu_data.flags & CPU_HAS_FPU)) + if (!(boot_cpu_data.flags & CPU_HAS_FPU)) return 0; if (!used_math()) { @@ -199,7 +199,7 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc, int *r0_p #undef COPY #ifdef CONFIG_SH_FPU - if (current_cpu_data.flags & CPU_HAS_FPU) { + if (boot_cpu_data.flags & CPU_HAS_FPU) { int owned_fp; struct task_struct *tsk = current; @@ -472,6 +472,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, err |= __put_user(OR_R0_R0, &frame->retcode[6]); err |= __put_user((__NR_rt_sigreturn), &frame->retcode[7]); regs->pr = (unsigned long) frame->retcode; + flush_icache_range(regs->pr, regs->pr + sizeof(frame->retcode)); } if (err) @@ -497,8 +498,6 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, pr_debug("SIG deliver (%s:%d): sp=%p pc=%08lx pr=%08lx\n", current->comm, task_pid_nr(current), frame, regs->pc, regs->pr); - flush_icache_range(regs->pr, regs->pr + sizeof(frame->retcode)); - return 0; give_sigsegv: diff --git a/arch/sh/kernel/smp.c b/arch/sh/kernel/smp.c index 442d8d4..160db10 100644 --- a/arch/sh/kernel/smp.c +++ b/arch/sh/kernel/smp.c @@ -35,6 +35,8 @@ static inline void __init smp_store_cpu_info(unsigned int cpu) { struct sh_cpuinfo *c = cpu_data + cpu; + memcpy(c, &boot_cpu_data, sizeof(struct sh_cpuinfo)); + c->loops_per_jiffy = loops_per_jiffy; } diff --git a/arch/sh/kernel/traps_32.c b/arch/sh/kernel/traps_32.c index e0b5e4b..7a2ee3a 100644 --- a/arch/sh/kernel/traps_32.c +++ b/arch/sh/kernel/traps_32.c @@ -25,6 +25,7 @@ #include <linux/kexec.h> #include <linux/limits.h> #include <linux/proc_fs.h> +#include <linux/sysfs.h> #include <asm/system.h> #include <asm/uaccess.h> #include <asm/fpu.h> @@ -159,12 +160,12 @@ void die(const char * str, struct pt_regs * regs, long err) oops_enter(); - console_verbose(); spin_lock_irq(&die_lock); + console_verbose(); bust_spinlocks(1); printk("%s: %04lx [#%d]\n", str, err & 0xffff, ++die_counter); - + sysfs_printk_last_file(); print_modules(); show_regs(regs); @@ -180,6 +181,7 @@ void die(const char * str, struct pt_regs * regs, long err) bust_spinlocks(0); add_taint(TAINT_DIE); spin_unlock_irq(&die_lock); + oops_exit(); if (kexec_should_crash(current)) crash_kexec(regs); @@ -190,7 +192,6 @@ void die(const char * str, struct pt_regs * regs, long err) if (panic_on_oops) panic("Fatal exception"); - oops_exit(); do_exit(SIGSEGV); } diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig index 64dc1ad..7f7b52f 100644 --- a/arch/sh/mm/Kconfig +++ b/arch/sh/mm/Kconfig @@ -227,7 +227,7 @@ endchoice choice prompt "HugeTLB page size" - depends on HUGETLB_PAGE && (CPU_SH4 || CPU_SH5) && MMU + depends on HUGETLB_PAGE default HUGETLB_PAGE_SIZE_1MB if PAGE_SIZE_64KB default HUGETLB_PAGE_SIZE_64K diff --git a/arch/sh/mm/cache-sh4.c b/arch/sh/mm/cache-sh4.c index a98c7d8..b7f235c 100644 --- a/arch/sh/mm/cache-sh4.c +++ b/arch/sh/mm/cache-sh4.c @@ -26,7 +26,7 @@ #define MAX_DCACHE_PAGES 64 /* XXX: Tune for ways */ #define MAX_ICACHE_PAGES 32 -static void __flush_cache_4096(unsigned long addr, unsigned long phys, +static void __flush_cache_one(unsigned long addr, unsigned long phys, unsigned long exec_offset); /* @@ -72,6 +72,7 @@ static void __uses_jump_to_uncached sh4_flush_icache_range(void *args) for (v = start; v < end; v += L1_CACHE_BYTES) { unsigned long icacheaddr; + int j, n; __ocbwb(v); @@ -79,8 +80,10 @@ static void __uses_jump_to_uncached sh4_flush_icache_range(void *args) cpu_data->icache.entry_mask); /* Clear i-cache line valid-bit */ + n = boot_cpu_data.icache.n_aliases; for (i = 0; i < cpu_data->icache.ways; i++) { - __raw_writel(0, icacheaddr); + for (j = 0; j < n; j++) + __raw_writel(0, icacheaddr + (j * PAGE_SIZE)); icacheaddr += cpu_data->icache.way_incr; } } @@ -89,8 +92,7 @@ static void __uses_jump_to_uncached sh4_flush_icache_range(void *args) local_irq_restore(flags); } -static inline void flush_cache_4096(unsigned long start, - unsigned long phys) +static inline void flush_cache_one(unsigned long start, unsigned long phys) { unsigned long flags, exec_offset = 0; @@ -103,8 +105,7 @@ static inline void flush_cache_4096(unsigned long start, exec_offset = 0x20000000; local_irq_save(flags); - __flush_cache_4096(start | SH_CACHE_ASSOC, - P1SEGADDR(phys), exec_offset); + __flush_cache_one(start | SH_CACHE_ASSOC, P1SEGADDR(phys), exec_offset); local_irq_restore(flags); } @@ -129,8 +130,8 @@ static void sh4_flush_dcache_page(void *arg) /* Loop all the D-cache */ n = boot_cpu_data.dcache.n_aliases; - for (i = 0; i < n; i++, addr += 4096) - flush_cache_4096(addr, phys); + for (i = 0; i < n; i++, addr += PAGE_SIZE) + flush_cache_one(addr, phys); } wmb(); @@ -318,11 +319,11 @@ static void sh4_flush_cache_page(void *args) /* We only need to flush D-cache when we have alias */ if ((address^phys) & alias_mask) { /* Loop 4K of the D-cache */ - flush_cache_4096( + flush_cache_one( CACHE_OC_ADDRESS_ARRAY | (address & alias_mask), phys); /* Loop another 4K of the D-cache */ - flush_cache_4096( + flush_cache_one( CACHE_OC_ADDRESS_ARRAY | (phys & alias_mask), phys); } @@ -337,7 +338,7 @@ static void sh4_flush_cache_page(void *args) * kernel has never executed the code through its identity * translation. */ - flush_cache_4096( + flush_cache_one( CACHE_IC_ADDRESS_ARRAY | (address & alias_mask), phys); } @@ -393,7 +394,7 @@ static void sh4_flush_cache_range(void *args) } /** - * __flush_cache_4096 + * __flush_cache_one * * @addr: address in memory mapped cache array * @phys: P1 address to flush (has to match tags if addr has 'A' bit @@ -406,7 +407,7 @@ static void sh4_flush_cache_range(void *args) * operation (purge/write-back) is selected by the lower 2 bits of * 'phys'. */ -static void __flush_cache_4096(unsigned long addr, unsigned long phys, +static void __flush_cache_one(unsigned long addr, unsigned long phys, unsigned long exec_offset) { int way_count; diff --git a/arch/sh/mm/cache.c b/arch/sh/mm/cache.c index 35c37b7..a2dc7f9 100644 --- a/arch/sh/mm/cache.c +++ b/arch/sh/mm/cache.c @@ -128,7 +128,7 @@ void __update_cache(struct vm_area_struct *vma, return; page = pfn_to_page(pfn); - if (pfn_valid(pfn) && page_mapping(page)) { + if (pfn_valid(pfn)) { int dirty = test_and_clear_bit(PG_dcache_dirty, &page->flags); if (dirty) { unsigned long addr = (unsigned long)page_address(page); @@ -265,6 +265,8 @@ static void __init emit_cache_params(void) void __init cpu_cache_init(void) { + unsigned int cache_disabled = !(__raw_readl(CCR) & CCR_CACHE_ENABLE); + compute_alias(&boot_cpu_data.icache); compute_alias(&boot_cpu_data.dcache); compute_alias(&boot_cpu_data.scache); @@ -273,6 +275,13 @@ void __init cpu_cache_init(void) __flush_purge_region = noop__flush_region; __flush_invalidate_region = noop__flush_region; + /* + * No flushing is necessary in the disabled cache case so we can + * just keep the noop functions in local_flush_..() and __flush_..() + */ + if (unlikely(cache_disabled)) + goto skip; + if (boot_cpu_data.family == CPU_FAMILY_SH2) { extern void __weak sh2_cache_init(void); @@ -312,5 +321,6 @@ void __init cpu_cache_init(void) sh5_cache_init(); } +skip: emit_cache_params(); } |