diff options
Diffstat (limited to 'arch/c6x')
50 files changed, 672 insertions, 591 deletions
diff --git a/arch/c6x/Kconfig b/arch/c6x/Kconfig index 052f81a7623..77ea09b8bce 100644 --- a/arch/c6x/Kconfig +++ b/arch/c6x/Kconfig @@ -6,16 +6,17 @@ config C6X def_bool y select CLKDEV_LOOKUP + select GENERIC_ATOMIC64 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 MODULES_USE_ELF_RELA config MMU def_bool n @@ -35,9 +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 @@ -104,10 +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 1d08dd07027..e72eb341723 100644 --- a/arch/c6x/Makefile +++ b/arch/c6x/Makefile @@ -6,6 +6,8 @@ # for more details. # +KBUILD_DEFCONFIG := dsk6455_defconfig + cflags-y += -mno-dsbt -msdata=none cflags-$(CONFIG_C6X_BIG_KERNEL) += -mlong-calls @@ -39,7 +41,7 @@ DTB:=$(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/evmc6678.dts b/arch/c6x/boot/dts/evmc6678.dts new file mode 100644 index 00000000000..ab686301d32 --- /dev/null +++ b/arch/c6x/boot/dts/evmc6678.dts @@ -0,0 +1,83 @@ +/* + * arch/c6x/boot/dts/evmc6678.dts + * + * EVMC6678 Evaluation Platform For TMS320C6678 + * + * Copyright (C) 2012 Texas Instruments Incorporated + * + * Author: Ken Cox <jkc@redhat.com> + * + * 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. + * + */ + +/dts-v1/; + +/include/ "tms320c6678.dtsi" + +/ { + model = "Advantech EVMC6678"; + compatible = "advantech,evmc6678"; + + chosen { + bootargs = "root=/dev/nfs ip=dhcp rw"; + }; + + memory { + device_type = "memory"; + reg = <0x80000000 0x20000000>; + }; + + soc { + megamod_pic: interrupt-controller@1800000 { + interrupts = < 12 13 14 15 >; + }; + + timer8: timer@2280000 { + interrupt-parent = <&megamod_pic>; + interrupts = < 66 >; + }; + + timer9: timer@2290000 { + interrupt-parent = <&megamod_pic>; + interrupts = < 68 >; + }; + + timer10: timer@22A0000 { + interrupt-parent = <&megamod_pic>; + interrupts = < 70 >; + }; + + timer11: timer@22B0000 { + interrupt-parent = <&megamod_pic>; + interrupts = < 72 >; + }; + + timer12: timer@22C0000 { + interrupt-parent = <&megamod_pic>; + interrupts = < 74 >; + }; + + timer13: timer@22D0000 { + interrupt-parent = <&megamod_pic>; + interrupts = < 76 >; + }; + + timer14: timer@22E0000 { + interrupt-parent = <&megamod_pic>; + interrupts = < 78 >; + }; + + timer15: timer@22F0000 { + interrupt-parent = <&megamod_pic>; + interrupts = < 80 >; + }; + + clock-controller@2310000 { + clock-frequency = <100000000>; + }; + }; +}; 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/dts/tms320c6678.dtsi b/arch/c6x/boot/dts/tms320c6678.dtsi new file mode 100644 index 00000000000..386196e5eae --- /dev/null +++ b/arch/c6x/boot/dts/tms320c6678.dtsi @@ -0,0 +1,146 @@ + +/ { + #address-cells = <1>; + #size-cells = <1>; + + cpus { + #address-cells = <1>; + #size-cells = <0>; + + cpu@0 { + device_type = "cpu"; + reg = <0>; + model = "ti,c66x"; + }; + cpu@1 { + device_type = "cpu"; + reg = <1>; + model = "ti,c66x"; + }; + cpu@2 { + device_type = "cpu"; + reg = <2>; + model = "ti,c66x"; + }; + cpu@3 { + device_type = "cpu"; + reg = <3>; + model = "ti,c66x"; + }; + cpu@4 { + device_type = "cpu"; + reg = <4>; + model = "ti,c66x"; + }; + cpu@5 { + device_type = "cpu"; + reg = <5>; + model = "ti,c66x"; + }; + cpu@6 { + device_type = "cpu"; + reg = <6>; + model = "ti,c66x"; + }; + cpu@7 { + device_type = "cpu"; + reg = <7>; + model = "ti,c66x"; + }; + }; + + soc { + compatible = "simple-bus"; + model = "tms320c6678"; + #address-cells = <1>; + #size-cells = <1>; + ranges; + + core_pic: interrupt-controller { + compatible = "ti,c64x+core-pic"; + interrupt-controller; + #interrupt-cells = <1>; + }; + + megamod_pic: interrupt-controller@1800000 { + compatible = "ti,c64x+megamod-pic"; + interrupt-controller; + #interrupt-cells = <1>; + reg = <0x1800000 0x1000>; + interrupt-parent = <&core_pic>; + }; + + cache-controller@1840000 { + compatible = "ti,c64x+cache"; + reg = <0x01840000 0x8400>; + }; + + timer8: timer@2280000 { + compatible = "ti,c64x+timer64"; + ti,core-mask = < 0x01 >; + reg = <0x2280000 0x40>; + }; + + timer9: timer@2290000 { + compatible = "ti,c64x+timer64"; + ti,core-mask = < 0x02 >; + reg = <0x2290000 0x40>; + }; + + timer10: timer@22A0000 { + compatible = "ti,c64x+timer64"; + ti,core-mask = < 0x04 >; + reg = <0x22A0000 0x40>; + }; + + timer11: timer@22B0000 { + compatible = "ti,c64x+timer64"; + ti,core-mask = < 0x08 >; + reg = <0x22B0000 0x40>; + }; + + timer12: timer@22C0000 { + compatible = "ti,c64x+timer64"; + ti,core-mask = < 0x10 >; + reg = <0x22C0000 0x40>; + }; + + timer13: timer@22D0000 { + compatible = "ti,c64x+timer64"; + ti,core-mask = < 0x20 >; + reg = <0x22D0000 0x40>; + }; + + timer14: timer@22E0000 { + compatible = "ti,c64x+timer64"; + ti,core-mask = < 0x40 >; + reg = <0x22E0000 0x40>; + }; + + timer15: timer@22F0000 { + compatible = "ti,c64x+timer64"; + ti,core-mask = < 0x80 >; + reg = <0x22F0000 0x40>; + }; + + clock-controller@2310000 { + compatible = "ti,c6678-pll", "ti,c64x+pll"; + reg = <0x02310000 0x200>; + ti,c64x+pll-bypass-delay = <200>; + ti,c64x+pll-reset-delay = <12000>; + ti,c64x+pll-lock-delay = <80000>; + }; + + device-state-controller@2620000 { + compatible = "ti,c64x+dscr"; + reg = <0x02620000 0x1000>; + + ti,dscr-devstat = <0x20>; + ti,dscr-silicon-rev = <0x18 28 0xf>; + + ti,dscr-mac-fuse-regs = <0x110 1 2 3 4 + 0x114 5 6 0 0>; + + }; + }; +}; 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/configs/evmc6678_defconfig b/arch/c6x/configs/evmc6678_defconfig new file mode 100644 index 00000000000..5f126d4905b --- /dev/null +++ b/arch/c6x/configs/evmc6678_defconfig @@ -0,0 +1,42 @@ +CONFIG_SOC_TMS320C6678=y +CONFIG_EXPERIMENTAL=y +# CONFIG_LOCALVERSION_AUTO is not set +CONFIG_SYSVIPC=y +CONFIG_SPARSE_IRQ=y +CONFIG_LOG_BUF_SHIFT=14 +CONFIG_NAMESPACES=y +# CONFIG_UTS_NS is not set +# CONFIG_USER_NS is not set +# CONFIG_PID_NS is not set +CONFIG_BLK_DEV_INITRD=y +CONFIG_CC_OPTIMIZE_FOR_SIZE=y +CONFIG_EXPERT=y +# CONFIG_FUTEX is not set +# CONFIG_SLUB_DEBUG is not set +CONFIG_MODULES=y +CONFIG_MODULE_FORCE_LOAD=y +CONFIG_MODULE_UNLOAD=y +CONFIG_MODULE_FORCE_UNLOAD=y +CONFIG_CMDLINE_BOOL=y +CONFIG_CMDLINE="" +# CONFIG_CMDLINE_FORCE is not set +CONFIG_BOARD_EVM6678=y +CONFIG_NO_HZ=y +CONFIG_HIGH_RES_TIMERS=y +CONFIG_BLK_DEV_LOOP=y +CONFIG_BLK_DEV_RAM=y +CONFIG_BLK_DEV_RAM_COUNT=2 +CONFIG_BLK_DEV_RAM_SIZE=17000 +CONFIG_MISC_DEVICES=y +# CONFIG_INPUT is not set +# CONFIG_SERIO is not set +# CONFIG_VT is not set +# CONFIG_HW_RANDOM is not set +# CONFIG_HWMON is not set +# CONFIG_USB_SUPPORT is not set +# CONFIG_IOMMU_SUPPORT is not set +# CONFIG_MISC_FILESYSTEMS is not set +CONFIG_CRC16=y +# CONFIG_ENABLE_MUST_CHECK is not set +# CONFIG_SCHED_DEBUG is not set +# CONFIG_DEBUG_BUGVERBOSE is not set diff --git a/arch/c6x/include/asm/Kbuild b/arch/c6x/include/asm/Kbuild index 3af601e31e6..8dbdce8421b 100644 --- a/arch/c6x/include/asm/Kbuild +++ b/arch/c6x/include/asm/Kbuild @@ -1,7 +1,7 @@ -include include/asm-generic/Kbuild.asm generic-y += atomic.h generic-y += auxvec.h +generic-y += barrier.h generic-y += bitsperlong.h generic-y += bugs.h generic-y += cputime.h @@ -11,9 +11,11 @@ generic-y += div64.h generic-y += dma.h generic-y += emergency-restart.h generic-y += errno.h +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 @@ -23,7 +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 @@ -32,6 +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 @@ -39,6 +44,7 @@ generic-y += sembuf.h generic-y += shmbuf.h generic-y += shmparam.h generic-y += siginfo.h +generic-y += signal.h generic-y += socket.h generic-y += sockios.h generic-y += stat.h @@ -47,7 +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/barrier.h b/arch/c6x/include/asm/barrier.h deleted file mode 100644 index 538240e8590..00000000000 --- a/arch/c6x/include/asm/barrier.h +++ /dev/null @@ -1,27 +0,0 @@ -/* - * 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_BARRIER_H -#define _ASM_C6X_BARRIER_H - -#define nop() asm("NOP\n"); - -#define mb() barrier() -#define rmb() barrier() -#define wmb() barrier() -#define set_mb(var, value) do { var = value; mb(); } while (0) -#define set_wmb(var, value) do { var = value; wmb(); } while (0) - -#define smp_mb() barrier() -#define smp_rmb() barrier() -#define smp_wmb() barrier() -#define smp_read_barrier_depends() do { } while (0) - -#endif /* _ASM_C6X_BARRIER_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 6d521d96d94..86648c083bb 100644 --- a/arch/c6x/include/asm/cache.h +++ b/arch/c6x/include/asm/cache.h @@ -1,7 +1,7 @@ /* * Port on Texas Instruments TMS320C6x architecture * - * Copyright (C) 2005, 2006, 2009, 2010 Texas Instruments Incorporated + * Copyright (C) 2005, 2006, 2009, 2010, 2012 Texas Instruments Incorporated * Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com) * * This program is free software; you can redistribute it and/or modify @@ -12,13 +12,19 @@ #define _ASM_C6X_CACHE_H #include <linux/irqflags.h> +#include <linux/init.h> /* * Cache line size */ -#define L1D_CACHE_BYTES 64 -#define L1P_CACHE_BYTES 32 -#define L2_CACHE_BYTES 128 +#define L1D_CACHE_SHIFT 6 +#define L1D_CACHE_BYTES (1 << L1D_CACHE_SHIFT) + +#define L1P_CACHE_SHIFT 5 +#define L1P_CACHE_BYTES (1 << L1P_CACHE_SHIFT) + +#define L2_CACHE_SHIFT 7 +#define L2_CACHE_BYTES (1 << L2_CACHE_SHIFT) /* * L2 used as cache @@ -29,7 +35,8 @@ * For practical reasons the L1_CACHE_BYTES defines should not be smaller than * the L2 line size */ -#define L1_CACHE_BYTES L2_CACHE_BYTES +#define L1_CACHE_SHIFT L2_CACHE_SHIFT +#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) #define L2_CACHE_ALIGN_LOW(x) \ (((x) & ~(L2_CACHE_BYTES - 1))) 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 f4552db20b4..9a4dfc5eb24 100644 --- a/arch/c6x/include/asm/elf.h +++ b/arch/c6x/include/asm/elf.h @@ -77,8 +77,6 @@ do { \ #define ELF_PLATFORM (NULL) -#define SET_PERSONALITY(ex) set_personality(PER_LINUX) - /* C6X specific section types */ #define SHT_C6000_UNWIND 0x70000001 #define SHT_C6000_PREEMPTMAP 0x70000002 diff --git a/arch/c6x/include/asm/exec.h b/arch/c6x/include/asm/exec.h deleted file mode 100644 index 0fea482cdc8..00000000000 --- a/arch/c6x/include/asm/exec.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef _ASM_C6X_EXEC_H -#define _ASM_C6X_EXEC_H - -#define arch_align_stack(x) (x) - -#endif /* _ASM_C6X_EXEC_H */ diff --git a/arch/c6x/include/asm/irq.h b/arch/c6x/include/asm/irq.h index ab4577f93d9..1324e62bd4e 100644 --- a/arch/c6x/include/asm/irq.h +++ b/arch/c6x/include/asm/irq.h @@ -34,8 +34,6 @@ */ #define NR_PRIORITY_IRQS 16 -#define NR_IRQS_LEGACY NR_PRIORITY_IRQS - /* Total number of virq in the platform */ #define NR_IRQS 256 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/kvm_para.h b/arch/c6x/include/asm/kvm_para.h deleted file mode 100644 index 14fab8f0b95..00000000000 --- a/arch/c6x/include/asm/kvm_para.h +++ /dev/null @@ -1 +0,0 @@ -#include <asm-generic/kvm_para.h> 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/module.h b/arch/c6x/include/asm/module.h index a453f9744f4..5c7269c7ef7 100644 --- a/arch/c6x/include/asm/module.h +++ b/arch/c6x/include/asm/module.h @@ -13,17 +13,7 @@ #ifndef _ASM_C6X_MODULE_H #define _ASM_C6X_MODULE_H -#define Elf_Shdr Elf32_Shdr -#define Elf_Sym Elf32_Sym -#define Elf_Ehdr Elf32_Ehdr -#define Elf_Addr Elf32_Addr -#define Elf_Word Elf32_Word - -/* - * This file contains the C6x architecture specific module code. - */ -struct mod_arch_specific { -}; +#include <asm-generic/module.h> struct loaded_sections { unsigned int new_vaddr; 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/processor.h b/arch/c6x/include/asm/processor.h index c50af7ef1c9..b9eb3da7f27 100644 --- a/arch/c6x/include/asm/processor.h +++ b/arch/c6x/include/asm/processor.h @@ -92,8 +92,6 @@ static inline void release_thread(struct task_struct *dead_task) { } -extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags); - #define copy_segments(tsk, mm) do { } while (0) #define release_segments(mm) do { } while (0) 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/ptrace.h b/arch/c6x/include/asm/ptrace.h index b04ff596425..76da6ad6610 100644 --- a/arch/c6x/include/asm/ptrace.h +++ b/arch/c6x/include/asm/ptrace.h @@ -11,156 +11,13 @@ #ifndef _ASM_C6X_PTRACE_H #define _ASM_C6X_PTRACE_H -#define BKPT_OPCODE 0x56454314 /* illegal opcode */ - -#ifdef _BIG_ENDIAN -#define PT_LO(odd, even) odd -#define PT_HI(odd, even) even -#else -#define PT_LO(odd, even) even -#define PT_HI(odd, even) odd -#endif - -#define PT_A4_ORG PT_LO(1, 0) -#define PT_TSR PT_HI(1, 0) -#define PT_ILC PT_LO(3, 2) -#define PT_RILC PT_HI(3, 2) -#define PT_CSR PT_LO(5, 4) -#define PT_PC PT_HI(5, 4) -#define PT_B16 PT_LO(7, 6) -#define PT_B17 PT_HI(7, 6) -#define PT_B18 PT_LO(9, 8) -#define PT_B19 PT_HI(9, 8) -#define PT_B20 PT_LO(11, 10) -#define PT_B21 PT_HI(11, 10) -#define PT_B22 PT_LO(13, 12) -#define PT_B23 PT_HI(13, 12) -#define PT_B24 PT_LO(15, 14) -#define PT_B25 PT_HI(15, 14) -#define PT_B26 PT_LO(17, 16) -#define PT_B27 PT_HI(17, 16) -#define PT_B28 PT_LO(19, 18) -#define PT_B29 PT_HI(19, 18) -#define PT_B30 PT_LO(21, 20) -#define PT_B31 PT_HI(21, 20) -#define PT_B0 PT_LO(23, 22) -#define PT_B1 PT_HI(23, 22) -#define PT_B2 PT_LO(25, 24) -#define PT_B3 PT_HI(25, 24) -#define PT_B4 PT_LO(27, 26) -#define PT_B5 PT_HI(27, 26) -#define PT_B6 PT_LO(29, 28) -#define PT_B7 PT_HI(29, 28) -#define PT_B8 PT_LO(31, 30) -#define PT_B9 PT_HI(31, 30) -#define PT_B10 PT_LO(33, 32) -#define PT_B11 PT_HI(33, 32) -#define PT_B12 PT_LO(35, 34) -#define PT_B13 PT_HI(35, 34) -#define PT_A16 PT_LO(37, 36) -#define PT_A17 PT_HI(37, 36) -#define PT_A18 PT_LO(39, 38) -#define PT_A19 PT_HI(39, 38) -#define PT_A20 PT_LO(41, 40) -#define PT_A21 PT_HI(41, 40) -#define PT_A22 PT_LO(43, 42) -#define PT_A23 PT_HI(43, 42) -#define PT_A24 PT_LO(45, 44) -#define PT_A25 PT_HI(45, 44) -#define PT_A26 PT_LO(47, 46) -#define PT_A27 PT_HI(47, 46) -#define PT_A28 PT_LO(49, 48) -#define PT_A29 PT_HI(49, 48) -#define PT_A30 PT_LO(51, 50) -#define PT_A31 PT_HI(51, 50) -#define PT_A0 PT_LO(53, 52) -#define PT_A1 PT_HI(53, 52) -#define PT_A2 PT_LO(55, 54) -#define PT_A3 PT_HI(55, 54) -#define PT_A4 PT_LO(57, 56) -#define PT_A5 PT_HI(57, 56) -#define PT_A6 PT_LO(59, 58) -#define PT_A7 PT_HI(59, 58) -#define PT_A8 PT_LO(61, 60) -#define PT_A9 PT_HI(61, 60) -#define PT_A10 PT_LO(63, 62) -#define PT_A11 PT_HI(63, 62) -#define PT_A12 PT_LO(65, 64) -#define PT_A13 PT_HI(65, 64) -#define PT_A14 PT_LO(67, 66) -#define PT_A15 PT_HI(67, 66) -#define PT_B14 PT_LO(69, 68) -#define PT_B15 PT_HI(69, 68) - -#define NR_PTREGS 70 - -#define PT_DP PT_B14 /* Data Segment Pointer (B14) */ -#define PT_SP PT_B15 /* Stack Pointer (B15) */ - -#define PTRACE_GETFDPIC 31 /* get the ELF fdpic loadmap address */ - -#define PTRACE_GETFDPIC_EXEC 0 /* [addr] request the executable loadmap */ -#define PTRACE_GETFDPIC_INTERP 1 /* [addr] request the interpreter loadmap */ +#include <uapi/asm/ptrace.h> #ifndef __ASSEMBLY__ - #ifdef _BIG_ENDIAN -#define REG_PAIR(odd, even) unsigned long odd; unsigned long even #else -#define REG_PAIR(odd, even) unsigned long even; unsigned long odd #endif -/* - * this struct defines the way the registers are stored on the - * stack during a system call. fields defined with REG_PAIR - * are saved and restored using double-word memory operations - * which means the word ordering of the pair depends on endianess. - */ -struct pt_regs { - REG_PAIR(tsr, orig_a4); - REG_PAIR(rilc, ilc); - REG_PAIR(pc, csr); - - REG_PAIR(b17, b16); - REG_PAIR(b19, b18); - REG_PAIR(b21, b20); - REG_PAIR(b23, b22); - REG_PAIR(b25, b24); - REG_PAIR(b27, b26); - REG_PAIR(b29, b28); - REG_PAIR(b31, b30); - - REG_PAIR(b1, b0); - REG_PAIR(b3, b2); - REG_PAIR(b5, b4); - REG_PAIR(b7, b6); - REG_PAIR(b9, b8); - REG_PAIR(b11, b10); - REG_PAIR(b13, b12); - - REG_PAIR(a17, a16); - REG_PAIR(a19, a18); - REG_PAIR(a21, a20); - REG_PAIR(a23, a22); - REG_PAIR(a25, a24); - REG_PAIR(a27, a26); - REG_PAIR(a29, a28); - REG_PAIR(a31, a30); - - REG_PAIR(a1, a0); - REG_PAIR(a3, a2); - REG_PAIR(a5, a4); - REG_PAIR(a7, a6); - REG_PAIR(a9, a8); - REG_PAIR(a11, a10); - REG_PAIR(a13, a12); - - REG_PAIR(a15, a14); - REG_PAIR(sp, dp); -}; - -#ifdef __KERNEL__ - #include <linux/linkage.h> #define user_mode(regs) ((((regs)->tsr) & 0x40) != 0) @@ -174,6 +31,5 @@ extern void show_regs(struct pt_regs *); extern asmlinkage unsigned long syscall_trace_entry(struct pt_regs *regs); extern asmlinkage void syscall_trace_exit(struct pt_regs *regs); -#endif /* __KERNEL__ */ #endif /* __ASSEMBLY__ */ #endif /* _ASM_C6X_PTRACE_H */ diff --git a/arch/c6x/include/asm/setup.h b/arch/c6x/include/asm/setup.h index a01e31896fa..696804475f5 100644 --- a/arch/c6x/include/asm/setup.h +++ b/arch/c6x/include/asm/setup.h @@ -11,11 +11,9 @@ #ifndef _ASM_C6X_SETUP_H #define _ASM_C6X_SETUP_H -#define COMMAND_LINE_SIZE 1024 +#include <uapi/asm/setup.h> #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; diff --git a/arch/c6x/include/asm/signal.h b/arch/c6x/include/asm/signal.h deleted file mode 100644 index f1cd870596a..00000000000 --- a/arch/c6x/include/asm/signal.h +++ /dev/null @@ -1,17 +0,0 @@ -#ifndef _ASM_C6X_SIGNAL_H -#define _ASM_C6X_SIGNAL_H - -#include <asm-generic/signal.h> - -#ifndef __ASSEMBLY__ -#include <linux/linkage.h> - -struct pt_regs; - -extern asmlinkage int do_rt_sigreturn(struct pt_regs *regs); -extern asmlinkage void do_notify_resume(struct pt_regs *regs, - u32 thread_info_flags, - int syscall); -#endif - -#endif /* _ASM_C6X_SIGNAL_H */ diff --git a/arch/c6x/include/asm/syscalls.h b/arch/c6x/include/asm/syscalls.h index aed53da703c..df3d05feb15 100644 --- a/arch/c6x/include/asm/syscalls.h +++ b/arch/c6x/include/asm/syscalls.h @@ -41,15 +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); -extern asmlinkage long sys_c6x_execve(const char __user *name, - const char __user *const __user *argv, - const char __user *const __user *envp, - 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 1710bcbb8d0..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 @@ -97,7 +95,6 @@ struct thread_info *current_thread_info(void) #define TIF_NEED_RESCHED 3 /* rescheduling necessary */ #define TIF_RESTORE_SIGMASK 4 /* restore signal mask in do_signal() */ -#define TIF_POLLING_NRFLAG 16 /* true if polling TIF_NEED_RESCHED */ #define TIF_MEMDIE 17 /* OOM killer killed process */ #define TIF_WORK_MASK 0x00007FFE /* work on irq/exception return */ diff --git a/arch/c6x/include/uapi/asm/Kbuild b/arch/c6x/include/uapi/asm/Kbuild new file mode 100644 index 00000000000..e9bc2b2b814 --- /dev/null +++ b/arch/c6x/include/uapi/asm/Kbuild @@ -0,0 +1,12 @@ +# 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 +header-y += setup.h +header-y += sigcontext.h +header-y += swab.h +header-y += unistd.h diff --git a/arch/c6x/include/asm/byteorder.h b/arch/c6x/include/uapi/asm/byteorder.h index 166038db342..166038db342 100644 --- a/arch/c6x/include/asm/byteorder.h +++ b/arch/c6x/include/uapi/asm/byteorder.h diff --git a/arch/c6x/include/uapi/asm/ptrace.h b/arch/c6x/include/uapi/asm/ptrace.h new file mode 100644 index 00000000000..cc0a4d99151 --- /dev/null +++ b/arch/c6x/include/uapi/asm/ptrace.h @@ -0,0 +1,163 @@ +/* + * Copyright (C) 2004, 2006, 2009, 2010 Texas Instruments Incorporated + * Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com) + * + * Updated for 2.6.34: Mark Salter <msalter@redhat.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 _UAPI_ASM_C6X_PTRACE_H +#define _UAPI_ASM_C6X_PTRACE_H + +#define BKPT_OPCODE 0x56454314 /* illegal opcode */ + +#ifdef _BIG_ENDIAN +#define PT_LO(odd, even) odd +#define PT_HI(odd, even) even +#else +#define PT_LO(odd, even) even +#define PT_HI(odd, even) odd +#endif + +#define PT_A4_ORG PT_LO(1, 0) +#define PT_TSR PT_HI(1, 0) +#define PT_ILC PT_LO(3, 2) +#define PT_RILC PT_HI(3, 2) +#define PT_CSR PT_LO(5, 4) +#define PT_PC PT_HI(5, 4) +#define PT_B16 PT_LO(7, 6) +#define PT_B17 PT_HI(7, 6) +#define PT_B18 PT_LO(9, 8) +#define PT_B19 PT_HI(9, 8) +#define PT_B20 PT_LO(11, 10) +#define PT_B21 PT_HI(11, 10) +#define PT_B22 PT_LO(13, 12) +#define PT_B23 PT_HI(13, 12) +#define PT_B24 PT_LO(15, 14) +#define PT_B25 PT_HI(15, 14) +#define PT_B26 PT_LO(17, 16) +#define PT_B27 PT_HI(17, 16) +#define PT_B28 PT_LO(19, 18) +#define PT_B29 PT_HI(19, 18) +#define PT_B30 PT_LO(21, 20) +#define PT_B31 PT_HI(21, 20) +#define PT_B0 PT_LO(23, 22) +#define PT_B1 PT_HI(23, 22) +#define PT_B2 PT_LO(25, 24) +#define PT_B3 PT_HI(25, 24) +#define PT_B4 PT_LO(27, 26) +#define PT_B5 PT_HI(27, 26) +#define PT_B6 PT_LO(29, 28) +#define PT_B7 PT_HI(29, 28) +#define PT_B8 PT_LO(31, 30) +#define PT_B9 PT_HI(31, 30) +#define PT_B10 PT_LO(33, 32) +#define PT_B11 PT_HI(33, 32) +#define PT_B12 PT_LO(35, 34) +#define PT_B13 PT_HI(35, 34) +#define PT_A16 PT_LO(37, 36) +#define PT_A17 PT_HI(37, 36) +#define PT_A18 PT_LO(39, 38) +#define PT_A19 PT_HI(39, 38) +#define PT_A20 PT_LO(41, 40) +#define PT_A21 PT_HI(41, 40) +#define PT_A22 PT_LO(43, 42) +#define PT_A23 PT_HI(43, 42) +#define PT_A24 PT_LO(45, 44) +#define PT_A25 PT_HI(45, 44) +#define PT_A26 PT_LO(47, 46) +#define PT_A27 PT_HI(47, 46) +#define PT_A28 PT_LO(49, 48) +#define PT_A29 PT_HI(49, 48) +#define PT_A30 PT_LO(51, 50) +#define PT_A31 PT_HI(51, 50) +#define PT_A0 PT_LO(53, 52) +#define PT_A1 PT_HI(53, 52) +#define PT_A2 PT_LO(55, 54) +#define PT_A3 PT_HI(55, 54) +#define PT_A4 PT_LO(57, 56) +#define PT_A5 PT_HI(57, 56) +#define PT_A6 PT_LO(59, 58) +#define PT_A7 PT_HI(59, 58) +#define PT_A8 PT_LO(61, 60) +#define PT_A9 PT_HI(61, 60) +#define PT_A10 PT_LO(63, 62) +#define PT_A11 PT_HI(63, 62) +#define PT_A12 PT_LO(65, 64) +#define PT_A13 PT_HI(65, 64) +#define PT_A14 PT_LO(67, 66) +#define PT_A15 PT_HI(67, 66) +#define PT_B14 PT_LO(69, 68) +#define PT_B15 PT_HI(69, 68) + +#define NR_PTREGS 70 + +#define PT_DP PT_B14 /* Data Segment Pointer (B14) */ +#define PT_SP PT_B15 /* Stack Pointer (B15) */ + +#define PTRACE_GETFDPIC 31 /* get the ELF fdpic loadmap address */ + +#define PTRACE_GETFDPIC_EXEC 0 /* [addr] request the executable loadmap */ +#define PTRACE_GETFDPIC_INTERP 1 /* [addr] request the interpreter loadmap */ + +#ifndef __ASSEMBLY__ + +#ifdef _BIG_ENDIAN +#define REG_PAIR(odd, even) unsigned long odd; unsigned long even +#else +#define REG_PAIR(odd, even) unsigned long even; unsigned long odd +#endif + +/* + * this struct defines the way the registers are stored on the + * stack during a system call. fields defined with REG_PAIR + * are saved and restored using double-word memory operations + * which means the word ordering of the pair depends on endianess. + */ +struct pt_regs { + REG_PAIR(tsr, orig_a4); + REG_PAIR(rilc, ilc); + REG_PAIR(pc, csr); + + REG_PAIR(b17, b16); + REG_PAIR(b19, b18); + REG_PAIR(b21, b20); + REG_PAIR(b23, b22); + REG_PAIR(b25, b24); + REG_PAIR(b27, b26); + REG_PAIR(b29, b28); + REG_PAIR(b31, b30); + + REG_PAIR(b1, b0); + REG_PAIR(b3, b2); + REG_PAIR(b5, b4); + REG_PAIR(b7, b6); + REG_PAIR(b9, b8); + REG_PAIR(b11, b10); + REG_PAIR(b13, b12); + + REG_PAIR(a17, a16); + REG_PAIR(a19, a18); + REG_PAIR(a21, a20); + REG_PAIR(a23, a22); + REG_PAIR(a25, a24); + REG_PAIR(a27, a26); + REG_PAIR(a29, a28); + REG_PAIR(a31, a30); + + REG_PAIR(a1, a0); + REG_PAIR(a3, a2); + REG_PAIR(a5, a4); + REG_PAIR(a7, a6); + REG_PAIR(a9, a8); + REG_PAIR(a11, a10); + REG_PAIR(a13, a12); + + REG_PAIR(a15, a14); + REG_PAIR(sp, dp); +}; + +#endif /* __ASSEMBLY__ */ +#endif /* _UAPI_ASM_C6X_PTRACE_H */ diff --git a/arch/c6x/include/uapi/asm/setup.h b/arch/c6x/include/uapi/asm/setup.h new file mode 100644 index 00000000000..ad9ac97a8da --- /dev/null +++ b/arch/c6x/include/uapi/asm/setup.h @@ -0,0 +1,6 @@ +#ifndef _UAPI_ASM_C6X_SETUP_H +#define _UAPI_ASM_C6X_SETUP_H + +#define COMMAND_LINE_SIZE 1024 + +#endif /* _UAPI_ASM_C6X_SETUP_H */ diff --git a/arch/c6x/include/asm/sigcontext.h b/arch/c6x/include/uapi/asm/sigcontext.h index eb702f39cde..eb702f39cde 100644 --- a/arch/c6x/include/asm/sigcontext.h +++ b/arch/c6x/include/uapi/asm/sigcontext.h diff --git a/arch/c6x/include/asm/swab.h b/arch/c6x/include/uapi/asm/swab.h index fd4bb0520e5..fd4bb0520e5 100644 --- a/arch/c6x/include/asm/swab.h +++ b/arch/c6x/include/uapi/asm/swab.h diff --git a/arch/c6x/include/asm/unistd.h b/arch/c6x/include/uapi/asm/unistd.h index 6d54ea4262e..e7d09a614d1 100644 --- a/arch/c6x/include/asm/unistd.h +++ b/arch/c6x/include/uapi/asm/unistd.h @@ -13,8 +13,8 @@ * NON INFRINGEMENT. See the GNU General Public License for * more details. */ -#if !defined(_ASM_C6X_UNISTD_H) || defined(__SYSCALL) -#define _ASM_C6X_UNISTD_H + +#define __ARCH_WANT_SYS_CLONE /* Use the standard ABI for syscalls. */ #include <asm-generic/unistd.h> @@ -22,5 +22,3 @@ /* C6X-specific syscalls. */ #define __NR_cache_sync (__NR_arch_specific_syscall + 0) __SYSCALL(__NR_cache_sync, sys_cache_sync) - -#endif /* _ASM_C6X_UNISTD_H */ diff --git a/arch/c6x/kernel/asm-offsets.c b/arch/c6x/kernel/asm-offsets.c index 759ad6d207b..60f1e437745 100644 --- a/arch/c6x/kernel/asm-offsets.c +++ b/arch/c6x/kernel/asm-offsets.c @@ -116,7 +116,6 @@ void foo(void) DEFINE(_TIF_NOTIFY_RESUME, (1<<TIF_NOTIFY_RESUME)); DEFINE(_TIF_SIGPENDING, (1<<TIF_SIGPENDING)); DEFINE(_TIF_NEED_RESCHED, (1<<TIF_NEED_RESCHED)); - DEFINE(_TIF_POLLING_NRFLAG, (1<<TIF_POLLING_NRFLAG)); DEFINE(_TIF_ALLWORK_MASK, TIF_ALLWORK_MASK); DEFINE(_TIF_WORK_MASK, TIF_WORK_MASK); 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 30b37e5f4a6..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 @@ -400,9 +402,24 @@ ret_from_fork_2: STW .D2T2 B0,*+SP(REGS_A4+8) ENDPROC(ret_from_fork) +ENTRY(ret_from_kernel_thread) +#ifdef CONFIG_C6X_BIG_KERNEL + MVKL .S1 schedule_tail,A0 + MVKH .S1 schedule_tail,A0 + B .S2X A0 +#else + B .S2 schedule_tail +#endif + LDW .D2T2 *+SP(REGS_A0+8),B10 /* get fn */ + ADDKPC .S2 0f,B3,3 +0: + B .S2 B10 /* call fn */ + LDW .D2T1 *+SP(REGS_A1+8),A4 /* get arg */ + ADDKPC .S2 ret_from_fork_2,B3,3 +ENDPROC(ret_from_kernel_thread) + ;; - ;; 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 @@ -581,41 +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) - - ;; kernel_execve -ENTRY(kernel_execve) - MVK .S2 __NR_execve,B0 - SWE - BNOP .S2 B3,5 -ENDPROC(kernel_execve) - ;; ;; 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 @@ -628,29 +614,6 @@ ENTRY(sys_rt_sigreturn) #endif ENDPROC(sys_rt_sigreturn) -ENTRY(sys_execve) - ADDAW .D2 SP,2,B6 ; put regs addr in 4th parameter - ; & adjust regs stack addr - LDW .D2T2 *+SP(REGS_B4+8),B4 - - ;; c6x_execve(char *name, char **argv, - ;; char **envp, struct pt_regs *regs) -#ifdef CONFIG_C6X_BIG_KERNEL - || MVKL .S1 sys_c6x_execve,A0 - MVKH .S1 sys_c6x_execve,A0 - B .S2X A0 -#else - || B .S2 sys_c6x_execve -#endif - STW .D2T2 B3,*SP--[2] - ADDKPC .S2 ret_from_c6x_execve,B3,3 - -ret_from_c6x_execve: - LDW .D2T2 *++SP[2],B3 - NOP 4 - BNOP .S2 B3,5 -ENDPROC(sys_execve) - ENTRY(sys_pread_c6x) MV .D2X A8,B7 #ifdef CONFIG_C6X_BIG_KERNEL diff --git a/arch/c6x/kernel/irq.c b/arch/c6x/kernel/irq.c index c90fb5e82ad..247e0eb5e46 100644 --- a/arch/c6x/kernel/irq.c +++ b/arch/c6x/kernel/irq.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2011 Texas Instruments Incorporated + * Copyright (C) 2011-2012 Texas Instruments Incorporated * * This borrows heavily from powerpc version, which is: * @@ -35,9 +35,7 @@ static DEFINE_RAW_SPINLOCK(core_irq_lock); static void mask_core_irq(struct irq_data *data) { - unsigned int prio = data->irq; - - BUG_ON(prio < 4 || prio >= NR_PRIORITY_IRQS); + unsigned int prio = data->hwirq; raw_spin_lock(&core_irq_lock); and_creg(IER, ~(1 << prio)); @@ -46,7 +44,7 @@ static void mask_core_irq(struct irq_data *data) static void unmask_core_irq(struct irq_data *data) { - unsigned int prio = data->irq; + unsigned int prio = data->hwirq; raw_spin_lock(&core_irq_lock); or_creg(IER, 1 << prio); @@ -59,15 +57,15 @@ static struct irq_chip core_chip = { .irq_unmask = unmask_core_irq, }; +static int prio_to_virq[NR_PRIORITY_IRQS]; + asmlinkage void c6x_do_IRQ(unsigned int prio, struct pt_regs *regs) { struct pt_regs *old_regs = set_irq_regs(regs); irq_enter(); - BUG_ON(prio < 4 || prio >= NR_PRIORITY_IRQS); - - generic_handle_irq(prio); + generic_handle_irq(prio_to_virq[prio]); irq_exit(); @@ -82,6 +80,8 @@ static int core_domain_map(struct irq_domain *h, unsigned int virq, if (hw < 4 || hw >= NR_PRIORITY_IRQS) return -EINVAL; + prio_to_virq[hw] = virq; + irq_set_status_flags(virq, IRQ_LEVEL); irq_set_chip_and_handler(virq, &core_chip, handle_level_irq); return 0; @@ -102,9 +102,8 @@ void __init init_IRQ(void) np = of_find_compatible_node(NULL, NULL, "ti,c64x+core-pic"); if (np != NULL) { /* create the core host */ - core_domain = irq_domain_add_legacy(np, NR_PRIORITY_IRQS, - 0, 0, &core_domain_ops, - NULL); + core_domain = irq_domain_add_linear(np, NR_PRIORITY_IRQS, + &core_domain_ops, NULL); if (core_domain) irq_set_default_host(core_domain); of_node_put(np); diff --git a/arch/c6x/kernel/process.c b/arch/c6x/kernel/process.c index 45e924a636a..57d2ea8d197 100644 --- a/arch/c6x/kernel/process.c +++ b/arch/c6x/kernel/process.c @@ -25,6 +25,7 @@ void (*c6x_restart)(void); void (*c6x_halt)(void); extern asmlinkage void ret_from_fork(void); +extern asmlinkage void ret_from_kernel_thread(void); /* * power off function, if any @@ -32,7 +33,7 @@ extern asmlinkage void ret_from_fork(void); void (*pm_power_off)(void); EXPORT_SYMBOL(pm_power_off); -static void c6x_idle(void) +void arch_cpu_idle(void) { unsigned long tmp; @@ -48,32 +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"); @@ -103,37 +78,6 @@ void machine_power_off(void) halt_loop(); } -static void kernel_thread_helper(int dummy, void *arg, int (*fn)(void *)) -{ - do_exit(fn(arg)); -} - -/* - * Create a kernel thread - */ -int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags) -{ - struct pt_regs regs; - - /* - * copy_thread sets a4 to zero (child return from fork) - * so we can't just set things up to directly return to - * fn. - */ - memset(®s, 0, sizeof(regs)); - regs.b4 = (unsigned long) arg; - regs.a6 = (unsigned long) fn; - regs.pc = (unsigned long) kernel_thread_helper; - local_save_flags(regs.csr); - regs.csr |= 1; - regs.tsr = 5; /* Set GEE and GIE in TSR */ - - /* Ok, create the new process.. */ - return do_fork(flags | CLONE_VM | CLONE_UNTRACED, -1, ®s, - 0, NULL, NULL); -} -EXPORT_SYMBOL(kernel_thread); - void flush_thread(void) { } @@ -142,22 +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. */ @@ -185,28 +113,31 @@ 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); - *childregs = *regs; - childregs->a4 = 0; - - if (usp == -1) + 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); - else + p->thread.pc = (unsigned long) ret_from_kernel_thread; + childregs->a0 = usp; /* function */ + childregs->a1 = ustk_size; /* argument */ + } else { /* Otherwise use the given stack */ - childregs->sp = usp; + *childregs = *current_pt_regs(); + if (usp) + childregs->sp = usp; + p->thread.pc = (unsigned long) ret_from_fork; + } /* Set usp/ksp */ p->thread.usp = childregs->sp; - /* switch_to uses stack to save/restore 14 callee-saved regs */ thread_saved_ksp(p) = (unsigned long)childregs - 8; - p->thread.pc = (unsigned int) ret_from_fork; - p->thread.wchan = (unsigned long) ret_from_fork; + p->thread.wchan = p->thread.pc; #ifdef __DSBT__ { unsigned long dp; @@ -221,28 +152,6 @@ int copy_thread(unsigned long clone_flags, unsigned long usp, return 0; } -/* - * c6x_execve() executes a new program. - */ -SYSCALL_DEFINE4(c6x_execve, const char __user *, name, - const char __user *const __user *, argv, - const char __user *const __user *, envp, - struct pt_regs *, regs) -{ - int error; - char *filename; - - filename = getname(name); - error = PTR_ERR(filename); - if (IS_ERR(filename)) - goto out; - - error = do_execve(filename, argv, envp, regs); - putname(filename); -out: - return error; -} - unsigned long get_wchan(struct task_struct *p) { return p->thread.wchan; diff --git a/arch/c6x/kernel/setup.c b/arch/c6x/kernel/setup.c index ce46186600c..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; @@ -143,6 +136,10 @@ static void __init get_cpuinfo(void) p->cpu_name = "C64x+"; p->cpu_voltage = "1.2"; break; + case 21: + p->cpu_name = "C66X"; + p->cpu_voltage = "1.2"; + break; default: p->cpu_name = "unknown"; break; @@ -268,8 +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); @@ -290,10 +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(); } @@ -305,7 +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/signal.c b/arch/c6x/kernel/signal.c index 3d8f3c22a94..3998b24e26f 100644 --- a/arch/c6x/kernel/signal.c +++ b/arch/c6x/kernel/signal.c @@ -249,8 +249,6 @@ static void handle_signal(int sig, siginfo_t *info, struct k_sigaction *ka, struct pt_regs *regs, int syscall) { - int ret; - /* Are we from a system call? */ if (syscall) { /* If so, check system call restarting.. */ diff --git a/arch/c6x/kernel/soc.c b/arch/c6x/kernel/soc.c index 0748c94ebef..3ac74080fde 100644 --- a/arch/c6x/kernel/soc.c +++ b/arch/c6x/kernel/soc.c @@ -80,7 +80,7 @@ int soc_mac_addr(unsigned int index, u8 *addr) if (have_fuse_mac) memcpy(addr, c6x_fuse_mac, 6); else - random_ether_addr(addr); + eth_random_addr(addr); } /* adjust for specific EMAC device */ 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); } diff --git a/arch/c6x/platforms/Kconfig b/arch/c6x/platforms/Kconfig index 401ee678fd0..c4a0fad89aa 100644 --- a/arch/c6x/platforms/Kconfig +++ b/arch/c6x/platforms/Kconfig @@ -14,3 +14,7 @@ config SOC_TMS320C6472 config SOC_TMS320C6474 bool "TMS320C6474" default n + +config SOC_TMS320C6678 + bool "TMS320C6678" + default n diff --git a/arch/c6x/platforms/megamod-pic.c b/arch/c6x/platforms/megamod-pic.c index c1c4e2ae3f8..74e3371eb82 100644 --- a/arch/c6x/platforms/megamod-pic.c +++ b/arch/c6x/platforms/megamod-pic.c @@ -243,27 +243,37 @@ static struct megamod_pic * __init init_megamod_pic(struct device_node *np) * as their interrupt parent. */ for (i = 0; i < NR_COMBINERS; i++) { + struct irq_data *irq_data; + irq_hw_number_t hwirq; irq = irq_of_parse_and_map(np, i); if (irq == NO_IRQ) continue; + irq_data = irq_get_irq_data(irq); + if (!irq_data) { + pr_err("%s: combiner-%d no irq_data for virq %d!\n", + np->full_name, i, irq); + continue; + } + + hwirq = irq_data->hwirq; + /* - * We count on the core priority interrupts (4 - 15) being - * direct mapped. Check that device tree provided something - * in that range. + * Check that device tree provided something in the range + * of the core priority interrupts (4 - 15). */ - if (irq < 4 || irq >= NR_PRIORITY_IRQS) { - pr_err("%s: combiner-%d virq %d out of range!\n", - np->full_name, i, irq); + if (hwirq < 4 || hwirq >= NR_PRIORITY_IRQS) { + pr_err("%s: combiner-%d core irq %ld out of range!\n", + np->full_name, i, hwirq); continue; } /* record the mapping */ - mapping[irq - 4] = i; + mapping[hwirq - 4] = i; - pr_debug("%s: combiner-%d cascading to virq %d\n", - np->full_name, i, irq); + pr_debug("%s: combiner-%d cascading to hwirq %ld\n", + np->full_name, i, hwirq); cascade_data[i].pic = pic; cascade_data[i].index = i; diff --git a/arch/c6x/platforms/plldata.c b/arch/c6x/platforms/plldata.c index 2cfd6f42968..755359eb628 100644 --- a/arch/c6x/platforms/plldata.c +++ b/arch/c6x/platforms/plldata.c @@ -335,6 +335,68 @@ static void __init c6474_setup_clocks(struct device_node *node) } #endif /* CONFIG_SOC_TMS320C6474 */ +#ifdef CONFIG_SOC_TMS320C6678 +static struct clk_lookup c6678_clks[] = { + CLK(NULL, "pll1", &c6x_soc_pll1.sysclks[0]), + CLK(NULL, "pll1_refclk", &c6x_soc_pll1.sysclks[1]), + CLK(NULL, "pll1_sysclk2", &c6x_soc_pll1.sysclks[2]), + CLK(NULL, "pll1_sysclk3", &c6x_soc_pll1.sysclks[3]), + CLK(NULL, "pll1_sysclk4", &c6x_soc_pll1.sysclks[4]), + CLK(NULL, "pll1_sysclk5", &c6x_soc_pll1.sysclks[5]), + CLK(NULL, "pll1_sysclk6", &c6x_soc_pll1.sysclks[6]), + CLK(NULL, "pll1_sysclk7", &c6x_soc_pll1.sysclks[7]), + CLK(NULL, "pll1_sysclk8", &c6x_soc_pll1.sysclks[8]), + CLK(NULL, "pll1_sysclk9", &c6x_soc_pll1.sysclks[9]), + CLK(NULL, "pll1_sysclk10", &c6x_soc_pll1.sysclks[10]), + CLK(NULL, "pll1_sysclk11", &c6x_soc_pll1.sysclks[11]), + CLK(NULL, "core", &c6x_core_clk), + CLK("", NULL, NULL) +}; + +static void __init c6678_setup_clocks(struct device_node *node) +{ + struct pll_data *pll = &c6x_soc_pll1; + struct clk *sysclks = pll->sysclks; + + pll->flags = PLL_HAS_MUL; + + sysclks[1].flags |= FIXED_DIV_PLL; + sysclks[1].div = 1; + + sysclks[2].div = PLLDIV2; + + sysclks[3].flags |= FIXED_DIV_PLL; + sysclks[3].div = 2; + + sysclks[4].flags |= FIXED_DIV_PLL; + sysclks[4].div = 3; + + sysclks[5].div = PLLDIV5; + + sysclks[6].flags |= FIXED_DIV_PLL; + sysclks[6].div = 64; + + sysclks[7].flags |= FIXED_DIV_PLL; + sysclks[7].div = 6; + + sysclks[8].div = PLLDIV8; + + sysclks[9].flags |= FIXED_DIV_PLL; + sysclks[9].div = 12; + + sysclks[10].flags |= FIXED_DIV_PLL; + sysclks[10].div = 3; + + sysclks[11].flags |= FIXED_DIV_PLL; + sysclks[11].div = 6; + + c6x_core_clk.parent = &sysclks[0]; + c6x_i2c_clk.parent = &sysclks[7]; + + c6x_clks_init(c6678_clks); +} +#endif /* CONFIG_SOC_TMS320C6678 */ + static struct of_device_id c6x_clkc_match[] __initdata = { #ifdef CONFIG_SOC_TMS320C6455 { .compatible = "ti,c6455-pll", .data = c6455_setup_clocks }, @@ -348,6 +410,9 @@ static struct of_device_id c6x_clkc_match[] __initdata = { #ifdef CONFIG_SOC_TMS320C6474 { .compatible = "ti,c6474-pll", .data = c6474_setup_clocks }, #endif +#ifdef CONFIG_SOC_TMS320C6678 + { .compatible = "ti,c6678-pll", .data = c6678_setup_clocks }, +#endif { .compatible = "ti,c64x+pll" }, {} }; |