diff options
Diffstat (limited to 'arch/c6x')
29 files changed, 107 insertions, 294 deletions
diff --git a/arch/c6x/Kconfig b/arch/c6x/Kconfig index aee1b569ee6..77ea09b8bce 100644 --- a/arch/c6x/Kconfig +++ b/arch/c6x/Kconfig @@ -10,14 +10,12 @@ config C6X select GENERIC_IRQ_SHOW select HAVE_ARCH_TRACEHOOK select HAVE_DMA_API_DEBUG - select HAVE_GENERIC_HARDIRQS select HAVE_MEMBLOCK select SPARSE_IRQ select IRQ_DOMAIN select OF select OF_EARLY_FLATTREE select GENERIC_CLOCKEVENTS - select GENERIC_KERNEL_THREAD select MODULES_USE_ELF_RELA config MMU @@ -38,9 +36,6 @@ config GENERIC_HWEIGHT config GENERIC_BUG def_bool y -config COMMON_CLKDEV - def_bool y - config C6X_BIG_KERNEL bool "Build a big kernel" help @@ -107,10 +102,6 @@ menu "Processor type and features" source "arch/c6x/platforms/Kconfig" -config TMS320C6X_CACHES_ON - bool "L2 cache support" - default y - config KERNEL_RAM_BASE_ADDRESS hex "Virtual address of memory base" default 0xe0000000 if SOC_TMS320C6455 diff --git a/arch/c6x/Makefile b/arch/c6x/Makefile index a9eb9597e03..e72eb341723 100644 --- a/arch/c6x/Makefile +++ b/arch/c6x/Makefile @@ -41,7 +41,7 @@ DTB:=$(subst dtbImage.,,$(filter dtbImage.%, $(MAKECMDGOALS))) export DTB ifneq ($(DTB),) -core-y += $(boot)/ +core-y += $(boot)/dts/ endif # With make 3.82 we cannot mix normal and wildcard targets diff --git a/arch/c6x/boot/Makefile b/arch/c6x/boot/Makefile index 6891257d514..8734abee548 100644 --- a/arch/c6x/boot/Makefile +++ b/arch/c6x/boot/Makefile @@ -6,25 +6,5 @@ OBJCOPYFLAGS_vmlinux.bin := -O binary $(obj)/vmlinux.bin: vmlinux FORCE $(call if_changed,objcopy) -DTC_FLAGS ?= -p 1024 - -ifneq ($(DTB),) -obj-y += linked_dtb.o -endif - -$(obj)/%.dtb: $(src)/dts/%.dts FORCE - $(call if_changed_dep,dtc) - -quiet_cmd_cp = CP $< $@$2 - cmd_cp = cat $< >$@$2 || (rm -f $@ && echo false) - -# Generate builtin.dtb from $(DTB).dtb -$(obj)/builtin.dtb: $(obj)/$(DTB).dtb - $(call if_changed,cp) - -$(obj)/linked_dtb.o: $(obj)/builtin.dtb - $(obj)/dtbImage.%: vmlinux $(call if_changed,objcopy) - -clean-files := $(obj)/*.dtb diff --git a/arch/c6x/boot/dts/Makefile b/arch/c6x/boot/dts/Makefile new file mode 100644 index 00000000000..c7528b02d06 --- /dev/null +++ b/arch/c6x/boot/dts/Makefile @@ -0,0 +1,20 @@ +# +# Makefile for device trees +# + +DTC_FLAGS ?= -p 1024 + +ifneq ($(DTB),) +obj-y += linked_dtb.o +endif + +quiet_cmd_cp = CP $< $@$2 + cmd_cp = cat $< >$@$2 || (rm -f $@ && echo false) + +# Generate builtin.dtb from $(DTB).dtb +$(obj)/builtin.dtb: $(obj)/$(DTB).dtb + $(call if_changed,cp) + +$(obj)/linked_dtb.o: $(obj)/builtin.dtb + +clean-files := *.dtb diff --git a/arch/c6x/boot/dts/linked_dtb.S b/arch/c6x/boot/dts/linked_dtb.S new file mode 100644 index 00000000000..cf347f1d16c --- /dev/null +++ b/arch/c6x/boot/dts/linked_dtb.S @@ -0,0 +1,2 @@ +.section __fdt_blob,"a" +.incbin "arch/c6x/boot/dts/builtin.dtb" diff --git a/arch/c6x/boot/linked_dtb.S b/arch/c6x/boot/linked_dtb.S deleted file mode 100644 index 57a4454eaec..00000000000 --- a/arch/c6x/boot/linked_dtb.S +++ /dev/null @@ -1,2 +0,0 @@ -.section __fdt_blob,"a" -.incbin "arch/c6x/boot/builtin.dtb" diff --git a/arch/c6x/include/asm/Kbuild b/arch/c6x/include/asm/Kbuild index 112a496d835..8dbdce8421b 100644 --- a/arch/c6x/include/asm/Kbuild +++ b/arch/c6x/include/asm/Kbuild @@ -15,6 +15,7 @@ generic-y += exec.h generic-y += fb.h generic-y += fcntl.h generic-y += futex.h +generic-y += hash.h generic-y += hw_irq.h generic-y += io.h generic-y += ioctl.h @@ -24,7 +25,9 @@ generic-y += irq_regs.h generic-y += kdebug.h generic-y += kmap_types.h generic-y += local.h +generic-y += mcs_spinlock.h generic-y += mman.h +generic-y += mmu.h generic-y += mmu_context.h generic-y += msgbuf.h generic-y += param.h @@ -33,6 +36,7 @@ generic-y += percpu.h generic-y += pgalloc.h generic-y += poll.h generic-y += posix_types.h +generic-y += preempt.h generic-y += resource.h generic-y += scatterlist.h generic-y += segment.h @@ -49,7 +53,9 @@ generic-y += termbits.h generic-y += termios.h generic-y += tlbflush.h generic-y += topology.h +generic-y += trace_clock.h generic-y += types.h generic-y += ucontext.h generic-y += user.h generic-y += vga.h +generic-y += xor.h diff --git a/arch/c6x/include/asm/bitops.h b/arch/c6x/include/asm/bitops.h index 0bec7e5036a..f0ab012401b 100644 --- a/arch/c6x/include/asm/bitops.h +++ b/arch/c6x/include/asm/bitops.h @@ -14,14 +14,8 @@ #ifdef __KERNEL__ #include <linux/bitops.h> - #include <asm/byteorder.h> - -/* - * clear_bit() doesn't provide any barrier for the compiler. - */ -#define smp_mb__before_clear_bit() barrier() -#define smp_mb__after_clear_bit() barrier() +#include <asm/barrier.h> /* * We are lucky, DSP is perfect for bitops: do it in 3 cycles diff --git a/arch/c6x/include/asm/cache.h b/arch/c6x/include/asm/cache.h index 09c5a0f5f4d..86648c083bb 100644 --- a/arch/c6x/include/asm/cache.h +++ b/arch/c6x/include/asm/cache.h @@ -12,6 +12,7 @@ #define _ASM_C6X_CACHE_H #include <linux/irqflags.h> +#include <linux/init.h> /* * Cache line size diff --git a/arch/c6x/include/asm/dma-mapping.h b/arch/c6x/include/asm/dma-mapping.h index 03579fd99db..88bd0d899bd 100644 --- a/arch/c6x/include/asm/dma-mapping.h +++ b/arch/c6x/include/asm/dma-mapping.h @@ -32,6 +32,7 @@ static inline int dma_set_mask(struct device *dev, u64 dma_mask) */ static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) { + debug_dma_mapping_error(dev, dma_addr); return dma_addr == ~0; } @@ -88,4 +89,19 @@ extern void dma_free_coherent(struct device *, size_t, void *, dma_addr_t); #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent((d), (s), (h), (f)) #define dma_free_noncoherent(d, s, v, h) dma_free_coherent((d), (s), (v), (h)) +/* Not supported for now */ +static inline int dma_mmap_coherent(struct device *dev, + struct vm_area_struct *vma, void *cpu_addr, + dma_addr_t dma_addr, size_t size) +{ + return -EINVAL; +} + +static inline int dma_get_sgtable(struct device *dev, struct sg_table *sgt, + void *cpu_addr, dma_addr_t dma_addr, + size_t size) +{ + return -EINVAL; +} + #endif /* _ASM_C6X_DMA_MAPPING_H */ diff --git a/arch/c6x/include/asm/elf.h b/arch/c6x/include/asm/elf.h index 32b997126ad..9a4dfc5eb24 100644 --- a/arch/c6x/include/asm/elf.h +++ b/arch/c6x/include/asm/elf.h @@ -77,9 +77,6 @@ do { \ #define ELF_PLATFORM (NULL) -#define SET_PERSONALITY(ex) \ - set_personality(PER_LINUX | (current->personality & (~PER_MASK))) - /* C6X specific section types */ #define SHT_C6000_UNWIND 0x70000001 #define SHT_C6000_PREEMPTMAP 0x70000002 diff --git a/arch/c6x/include/asm/irqflags.h b/arch/c6x/include/asm/irqflags.h index cf78e09e18c..2c71d5634ec 100644 --- a/arch/c6x/include/asm/irqflags.h +++ b/arch/c6x/include/asm/irqflags.h @@ -27,7 +27,7 @@ static inline unsigned long arch_local_save_flags(void) /* set interrupt enabled status */ static inline void arch_local_irq_restore(unsigned long flags) { - asm volatile (" mvc .s2 %0,CSR\n" : : "b"(flags)); + asm volatile (" mvc .s2 %0,CSR\n" : : "b"(flags) : "memory"); } /* unconditionally enable interrupts */ diff --git a/arch/c6x/include/asm/mmu.h b/arch/c6x/include/asm/mmu.h deleted file mode 100644 index 4467e770a1c..00000000000 --- a/arch/c6x/include/asm/mmu.h +++ /dev/null @@ -1,22 +0,0 @@ -/* - * Port on Texas Instruments TMS320C6x architecture - * - * Copyright (C) 2004, 2009, 2010 Texas Instruments Incorporated - * Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com) - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -#ifndef _ASM_C6X_MMU_H -#define _ASM_C6X_MMU_H - -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 /* _ASM_C6X_MMU_H */ diff --git a/arch/c6x/include/asm/pgtable.h b/arch/c6x/include/asm/pgtable.h index 38a4312eb2c..c0eed5b1886 100644 --- a/arch/c6x/include/asm/pgtable.h +++ b/arch/c6x/include/asm/pgtable.h @@ -71,7 +71,6 @@ extern unsigned long empty_zero_page; * No page table caches to initialise */ #define pgtable_cache_init() do { } while (0) -#define io_remap_pfn_range remap_pfn_range #include <asm-generic/pgtable.h> diff --git a/arch/c6x/include/asm/prom.h b/arch/c6x/include/asm/prom.h deleted file mode 100644 index b4ec95f0751..00000000000 --- a/arch/c6x/include/asm/prom.h +++ /dev/null @@ -1 +0,0 @@ -/* dummy prom.h; here to make linux/of.h's #includes happy */ diff --git a/arch/c6x/include/asm/setup.h b/arch/c6x/include/asm/setup.h new file mode 100644 index 00000000000..696804475f5 --- /dev/null +++ b/arch/c6x/include/asm/setup.h @@ -0,0 +1,31 @@ +/* + * Port on Texas Instruments TMS320C6x architecture + * + * Copyright (C) 2004, 2009, 2010 2011 Texas Instruments Incorporated + * Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef _ASM_C6X_SETUP_H +#define _ASM_C6X_SETUP_H + +#include <uapi/asm/setup.h> + +#ifndef __ASSEMBLY__ +extern int c6x_add_memory(phys_addr_t start, unsigned long size); + +extern unsigned long ram_start; +extern unsigned long ram_end; + +extern int c6x_num_cores; +extern unsigned int c6x_silicon_rev; +extern unsigned int c6x_devstat; +extern unsigned char c6x_fuse_mac[6]; + +extern void machine_init(unsigned long dt_ptr); +extern void time_init(void); + +#endif /* !__ASSEMBLY__ */ +#endif /* _ASM_C6X_SETUP_H */ diff --git a/arch/c6x/include/asm/syscalls.h b/arch/c6x/include/asm/syscalls.h index e7b8991dc07..df3d05feb15 100644 --- a/arch/c6x/include/asm/syscalls.h +++ b/arch/c6x/include/asm/syscalls.h @@ -41,10 +41,6 @@ extern long sys_fallocate_c6x(int fd, int mode, u32 len_lo, u32 len_hi); extern int sys_cache_sync(unsigned long s, unsigned long e); -struct pt_regs; - -extern asmlinkage long sys_c6x_clone(struct pt_regs *regs); - #include <asm-generic/syscalls.h> #endif /* __ASM_C6X_SYSCALLS_H */ diff --git a/arch/c6x/include/asm/thread_info.h b/arch/c6x/include/asm/thread_info.h index 4c8dc562bd9..d4e9ef87076 100644 --- a/arch/c6x/include/asm/thread_info.h +++ b/arch/c6x/include/asm/thread_info.h @@ -84,8 +84,6 @@ struct thread_info *current_thread_info(void) #define put_thread_info(ti) put_task_struct((ti)->task) #endif /* __ASSEMBLY__ */ -#define PREEMPT_ACTIVE 0x10000000 - /* * thread information flag bit numbers * - pending work-to-be-done flags are in LSW diff --git a/arch/c6x/include/uapi/asm/Kbuild b/arch/c6x/include/uapi/asm/Kbuild index c312b424c43..e9bc2b2b814 100644 --- a/arch/c6x/include/uapi/asm/Kbuild +++ b/arch/c6x/include/uapi/asm/Kbuild @@ -1,6 +1,8 @@ # UAPI Header export list include include/uapi/asm-generic/Kbuild.asm +generic-y += kvm_para.h + header-y += byteorder.h header-y += kvm_para.h header-y += ptrace.h diff --git a/arch/c6x/include/uapi/asm/kvm_para.h b/arch/c6x/include/uapi/asm/kvm_para.h deleted file mode 100644 index 14fab8f0b95..00000000000 --- a/arch/c6x/include/uapi/asm/kvm_para.h +++ /dev/null @@ -1 +0,0 @@ -#include <asm-generic/kvm_para.h> diff --git a/arch/c6x/include/uapi/asm/setup.h b/arch/c6x/include/uapi/asm/setup.h index a01e31896fa..ad9ac97a8da 100644 --- a/arch/c6x/include/uapi/asm/setup.h +++ b/arch/c6x/include/uapi/asm/setup.h @@ -1,33 +1,6 @@ -/* - * Port on Texas Instruments TMS320C6x architecture - * - * Copyright (C) 2004, 2009, 2010 2011 Texas Instruments Incorporated - * Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com) - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -#ifndef _ASM_C6X_SETUP_H -#define _ASM_C6X_SETUP_H +#ifndef _UAPI_ASM_C6X_SETUP_H +#define _UAPI_ASM_C6X_SETUP_H #define COMMAND_LINE_SIZE 1024 -#ifndef __ASSEMBLY__ -extern char c6x_command_line[COMMAND_LINE_SIZE]; - -extern int c6x_add_memory(phys_addr_t start, unsigned long size); - -extern unsigned long ram_start; -extern unsigned long ram_end; - -extern int c6x_num_cores; -extern unsigned int c6x_silicon_rev; -extern unsigned int c6x_devstat; -extern unsigned char c6x_fuse_mac[6]; - -extern void machine_init(unsigned long dt_ptr); -extern void time_init(void); - -#endif /* !__ASSEMBLY__ */ -#endif /* _ASM_C6X_SETUP_H */ +#endif /* _UAPI_ASM_C6X_SETUP_H */ diff --git a/arch/c6x/include/uapi/asm/unistd.h b/arch/c6x/include/uapi/asm/unistd.h index 4ff747d12da..e7d09a614d1 100644 --- a/arch/c6x/include/uapi/asm/unistd.h +++ b/arch/c6x/include/uapi/asm/unistd.h @@ -14,8 +14,7 @@ * more details. */ -#define __ARCH_WANT_KERNEL_EXECVE -#define __ARCH_WANT_SYS_EXECVE +#define __ARCH_WANT_SYS_CLONE /* Use the standard ABI for syscalls. */ #include <asm-generic/unistd.h> diff --git a/arch/c6x/kernel/devicetree.c b/arch/c6x/kernel/devicetree.c index bdb56f09d0a..fa3e5741514 100644 --- a/arch/c6x/kernel/devicetree.c +++ b/arch/c6x/kernel/devicetree.c @@ -10,44 +10,9 @@ * */ #include <linux/init.h> -#include <linux/of.h> -#include <linux/of_fdt.h> -#include <linux/initrd.h> #include <linux/memblock.h> -void __init early_init_devtree(void *params) -{ - /* Setup flat device-tree pointer */ - initial_boot_params = params; - - /* Retrieve various informations from the /chosen node of the - * device-tree, including the platform type, initrd location and - * size and more ... - */ - of_scan_flat_dt(early_init_dt_scan_chosen, c6x_command_line); - - /* Scan memory nodes and rebuild MEMBLOCKs */ - of_scan_flat_dt(early_init_dt_scan_root, NULL); - of_scan_flat_dt(early_init_dt_scan_memory, NULL); -} - - -#ifdef CONFIG_BLK_DEV_INITRD -void __init early_init_dt_setup_initrd_arch(unsigned long start, - unsigned long end) -{ - initrd_start = (unsigned long)__va(start); - initrd_end = (unsigned long)__va(end); - initrd_below_start_ok = 1; -} -#endif - void __init early_init_dt_add_memory_arch(u64 base, u64 size) { c6x_add_memory(base, size); } - -void * __init early_init_dt_alloc_memory_arch(u64 size, u64 align) -{ - return __va(memblock_alloc(size, align)); -} diff --git a/arch/c6x/kernel/entry.S b/arch/c6x/kernel/entry.S index 5449c36018f..2721c90b012 100644 --- a/arch/c6x/kernel/entry.S +++ b/arch/c6x/kernel/entry.S @@ -277,6 +277,8 @@ work_rescheduled: [A1] BNOP .S1 work_resched,5 work_notifysig: + ;; enable interrupts for do_notify_resume() + UNMASK_INT B2 B .S2 do_notify_resume LDW .D2T1 *+SP(REGS__END+8),A6 ; syscall flag ADDKPC .S2 resume_userspace,B3,1 @@ -413,22 +415,11 @@ ENTRY(ret_from_kernel_thread) 0: B .S2 B10 /* call fn */ LDW .D2T1 *+SP(REGS_A1+8),A4 /* get arg */ - MVKL .S2 sys_exit,B11 - MVKH .S2 sys_exit,B11 - ADDKPC .S2 0f,B3,1 -0: - BNOP .S2 B11,5 /* jump to sys_exit */ + ADDKPC .S2 ret_from_fork_2,B3,3 ENDPROC(ret_from_kernel_thread) -ENTRY(ret_from_kernel_execve) - GET_THREAD_INFO A12 - BNOP .S2 syscall_exit,4 - ADD .D2X A4,-8,SP -ENDPROC(ret_from_kernel_execve) - ;; - ;; These are the interrupt handlers, responsible for calling __do_IRQ() - ;; int6 is used for syscalls (see _system_call entry) + ;; These are the interrupt handlers, responsible for calling c6x_do_IRQ() ;; .macro SAVE_ALL_INT SAVE_ALL IRP,ITSR @@ -607,34 +598,10 @@ ENTRY(enable_exception) NOP 5 ENDPROC(enable_exception) -ENTRY(sys_sigaltstack) -#ifdef CONFIG_C6X_BIG_KERNEL - MVKL .S1 do_sigaltstack,A0 ; branch to do_sigaltstack - MVKH .S1 do_sigaltstack,A0 - B .S2X A0 -#else - B .S2 do_sigaltstack -#endif - LDW .D2T1 *+SP(REGS_SP+8),A6 - NOP 4 -ENDPROC(sys_sigaltstack) - ;; ;; Special system calls ;; return address is in B3 ;; -ENTRY(sys_clone) - ADD .D1X SP,8,A4 -#ifdef CONFIG_C6X_BIG_KERNEL - || MVKL .S1 sys_c6x_clone,A0 - MVKH .S1 sys_c6x_clone,A0 - BNOP .S2X A0,5 -#else - || B .S2 sys_c6x_clone - NOP 5 -#endif -ENDPROC(sys_clone) - ENTRY(sys_rt_sigreturn) ADD .D1X SP,8,A4 #ifdef CONFIG_C6X_BIG_KERNEL diff --git a/arch/c6x/kernel/process.c b/arch/c6x/kernel/process.c index 2770d9a9a84..57d2ea8d197 100644 --- a/arch/c6x/kernel/process.c +++ b/arch/c6x/kernel/process.c @@ -33,7 +33,7 @@ extern asmlinkage void ret_from_kernel_thread(void); void (*pm_power_off)(void); EXPORT_SYMBOL(pm_power_off); -static void c6x_idle(void) +void arch_cpu_idle(void) { unsigned long tmp; @@ -49,32 +49,6 @@ static void c6x_idle(void) : "=b"(tmp)); } -/* - * The idle loop for C64x - */ -void cpu_idle(void) -{ - /* endless idle loop with no priority at all */ - while (1) { - tick_nohz_idle_enter(); - rcu_idle_enter(); - while (1) { - local_irq_disable(); - if (need_resched()) { - local_irq_enable(); - break; - } - c6x_idle(); /* enables local irqs */ - } - rcu_idle_exit(); - tick_nohz_idle_exit(); - - preempt_enable_no_resched(); - schedule(); - preempt_disable(); - } -} - static void halt_loop(void) { printk(KERN_EMERG "System Halted, OK to turn off power\n"); @@ -112,22 +86,6 @@ void exit_thread(void) { } -SYSCALL_DEFINE1(c6x_clone, struct pt_regs *, regs) -{ - unsigned long clone_flags; - unsigned long newsp; - - /* syscall puts clone_flags in A4 and usp in B4 */ - clone_flags = regs->orig_a4; - if (regs->b4) - newsp = regs->b4; - else - newsp = regs->sp; - - return do_fork(clone_flags, newsp, regs, 0, (int __user *)regs->a6, - (int __user *)regs->b6); -} - /* * Do necessary setup to start up a newly executed thread. */ @@ -155,13 +113,13 @@ void start_thread(struct pt_regs *regs, unsigned int pc, unsigned long usp) */ int copy_thread(unsigned long clone_flags, unsigned long usp, unsigned long ustk_size, - struct task_struct *p, struct pt_regs *regs) + struct task_struct *p) { struct pt_regs *childregs; childregs = task_pt_regs(p); - if (!regs) { + if (unlikely(p->flags & PF_KTHREAD)) { /* case of __kernel_thread: we return to supervisor space */ memset(childregs, 0, sizeof(struct pt_regs)); childregs->sp = (unsigned long)(childregs + 1); @@ -170,8 +128,9 @@ int copy_thread(unsigned long clone_flags, unsigned long usp, childregs->a1 = ustk_size; /* argument */ } else { /* Otherwise use the given stack */ - *childregs = *regs; - childregs->sp = usp; + *childregs = *current_pt_regs(); + if (usp) + childregs->sp = usp; p->thread.pc = (unsigned long) ret_from_fork; } diff --git a/arch/c6x/kernel/setup.c b/arch/c6x/kernel/setup.c index f4e72bd8c10..757128868d4 100644 --- a/arch/c6x/kernel/setup.c +++ b/arch/c6x/kernel/setup.c @@ -68,13 +68,6 @@ unsigned long ram_end; static unsigned long dma_start __initdata; static unsigned long dma_size __initdata; -char c6x_command_line[COMMAND_LINE_SIZE]; - -#if defined(CONFIG_CMDLINE_BOOL) -static const char default_command_line[COMMAND_LINE_SIZE] __section(.cmdline) = - CONFIG_CMDLINE; -#endif - struct cpuinfo_c6x { const char *cpu_name; const char *cpu_voltage; @@ -272,8 +265,8 @@ int __init c6x_add_memory(phys_addr_t start, unsigned long size) */ notrace void __init machine_init(unsigned long dt_ptr) { - struct boot_param_header *dtb = __va(dt_ptr); - struct boot_param_header *fdt = (struct boot_param_header *)_fdt_start; + const void *dtb = __va(dt_ptr); + const void *fdt = _fdt_start; /* interrupts must be masked */ set_creg(IER, 2); @@ -294,10 +287,8 @@ notrace void __init machine_init(unsigned long dt_ptr) fdt = dtb; /* Do some early initialization based on the flat device tree */ - early_init_devtree(fdt); + early_init_dt_scan(fdt); - /* parse_early_param needs a boot_command_line */ - strlcpy(boot_command_line, c6x_command_line, COMMAND_LINE_SIZE); parse_early_param(); } @@ -309,7 +300,7 @@ void __init setup_arch(char **cmdline_p) printk(KERN_INFO "Initializing kernel\n"); /* Initialize command line */ - *cmdline_p = c6x_command_line; + *cmdline_p = boot_command_line; memory_end = ram_end; memory_end &= ~(PAGE_SIZE - 1); diff --git a/arch/c6x/kernel/traps.c b/arch/c6x/kernel/traps.c index 1be74e5b478..dcc2c2f6d67 100644 --- a/arch/c6x/kernel/traps.c +++ b/arch/c6x/kernel/traps.c @@ -31,6 +31,7 @@ void __init trap_init(void) void show_regs(struct pt_regs *regs) { pr_err("\n"); + show_regs_print_info(KERN_ERR); pr_err("PC: %08lx SP: %08lx\n", regs->pc, regs->sp); pr_err("Status: %08lx ORIG_A4: %08lx\n", regs->csr, regs->orig_a4); pr_err("A0: %08lx B0: %08lx\n", regs->a0, regs->b0); @@ -67,15 +68,6 @@ void show_regs(struct pt_regs *regs) pr_err("A31: %08lx B31: %08lx\n", regs->a31, regs->b31); } -void dump_stack(void) -{ - unsigned long stack; - - show_stack(current, &stack); -} -EXPORT_SYMBOL(dump_stack); - - void die(char *str, struct pt_regs *fp, int nr) { console_verbose(); diff --git a/arch/c6x/kernel/vmlinux.lds.S b/arch/c6x/kernel/vmlinux.lds.S index 1d81c4c129e..5a6e141d164 100644 --- a/arch/c6x/kernel/vmlinux.lds.S +++ b/arch/c6x/kernel/vmlinux.lds.S @@ -37,12 +37,6 @@ SECTIONS _vectors_end = .; } - . = ALIGN(0x1000); - .cmdline : - { - *(.cmdline) - } - /* * This section contains data which may be shared with other * cores. It needs to be a fixed offset from PAGE_OFFSET @@ -54,16 +48,15 @@ SECTIONS } . = ALIGN(PAGE_SIZE); + __init_begin = .; .init : { - _stext = .; _sinittext = .; HEAD_TEXT INIT_TEXT _einittext = .; } - __init_begin = _stext; INIT_DATA_SECTION(16) PERCPU_SECTION(128) @@ -74,6 +67,7 @@ SECTIONS .text : { _text = .; + _stext = .; TEXT_TEXT SCHED_TEXT LOCK_TEXT diff --git a/arch/c6x/mm/init.c b/arch/c6x/mm/init.c index 89395f09648..63f5560d6eb 100644 --- a/arch/c6x/mm/init.c +++ b/arch/c6x/mm/init.c @@ -18,6 +18,7 @@ #include <linux/initrd.h> #include <asm/sections.h> +#include <asm/uaccess.h> /* * ZERO_PAGE is a special page that is used for zero-initialized @@ -57,57 +58,22 @@ void __init paging_init(void) void __init mem_init(void) { - int codek, datak; - unsigned long tmp; - unsigned long len = memory_end - memory_start; - high_memory = (void *)(memory_end & PAGE_MASK); /* this will put all memory onto the freelists */ - totalram_pages = free_all_bootmem(); - - codek = (_etext - _stext) >> 10; - datak = (_end - _sdata) >> 10; + free_all_bootmem(); - tmp = nr_free_pages() << PAGE_SHIFT; - printk(KERN_INFO "Memory: %luk/%luk RAM (%dk kernel code, %dk data)\n", - tmp >> 10, len >> 10, codek, datak); + mem_init_print_info(NULL); } #ifdef CONFIG_BLK_DEV_INITRD void __init free_initrd_mem(unsigned long start, unsigned long end) { - int pages = 0; - for (; start < end; start += PAGE_SIZE) { - ClearPageReserved(virt_to_page(start)); - init_page_count(virt_to_page(start)); - free_page(start); - totalram_pages++; - pages++; - } - printk(KERN_INFO "Freeing initrd memory: %luk freed\n", - (pages * PAGE_SIZE) >> 10); + free_reserved_area((void *)start, (void *)end, -1, "initrd"); } #endif void __init free_initmem(void) { - unsigned long addr; - - /* - * The following code should be cool even if these sections - * are not page aligned. - */ - addr = PAGE_ALIGN((unsigned long)(__init_begin)); - - /* next to check that the page we free is not a partial page */ - for (; addr + PAGE_SIZE < (unsigned long)(__init_end); - addr += PAGE_SIZE) { - ClearPageReserved(virt_to_page(addr)); - init_page_count(virt_to_page(addr)); - free_page(addr); - totalram_pages++; - } - printk(KERN_INFO "Freeing unused kernel memory: %dK freed\n", - (int) ((addr - PAGE_ALIGN((long) &__init_begin)) >> 10)); + free_initmem_default(-1); } |