diff options
Diffstat (limited to 'arch/arc')
37 files changed, 265 insertions, 437 deletions
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig index 9596b0ab108d..fe44b2494609 100644 --- a/arch/arc/Kconfig +++ b/arch/arc/Kconfig @@ -9,6 +9,7 @@ config ARC def_bool y select BUILDTIME_EXTABLE_SORT + select COMMON_CLK select CLONE_BACKWARDS # ARC Busybox based initramfs absolutely relies on DEVTMPFS for /dev select DEVTMPFS if !INITRAMFS_SOURCE="" @@ -73,9 +74,6 @@ config STACKTRACE_SUPPORT config HAVE_LATENCYTOP_SUPPORT def_bool y -config NO_DMA - def_bool n - source "init/Kconfig" source "kernel/Kconfig.freezer" @@ -354,7 +352,7 @@ config ARC_CURR_IN_REG kernel mode. This saves memory access for each such access -config ARC_MISALIGN_ACCESS +config ARC_EMUL_UNALIGNED bool "Emulate unaligned memory access (userspace only)" select SYSCTL_ARCH_UNALIGN_NO_WARN select SYSCTL_ARCH_UNALIGN_ALLOW diff --git a/arch/arc/Makefile b/arch/arc/Makefile index 8c0b1aa56f7e..10bc3d4e8a44 100644 --- a/arch/arc/Makefile +++ b/arch/arc/Makefile @@ -25,7 +25,6 @@ ifdef CONFIG_ARC_CURR_IN_REG LINUXINCLUDE += -include ${src}/arch/arc/include/asm/current.h endif -upto_gcc42 := $(call cc-ifversion, -le, 0402, y) upto_gcc44 := $(call cc-ifversion, -le, 0404, y) atleast_gcc44 := $(call cc-ifversion, -ge, 0404, y) atleast_gcc48 := $(call cc-ifversion, -ge, 0408, y) @@ -60,25 +59,11 @@ ldflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB # --build-id w/o "-marclinux". Default arc-elf32-ld is OK ldflags-$(upto_gcc44) += -marclinux -ARC_LIBGCC := -mA7 -cflags-$(CONFIG_ARC_HAS_HW_MPY) += -multcost=16 - ifndef CONFIG_ARC_HAS_HW_MPY cflags-y += -mno-mpy - -# newlib for ARC700 assumes MPY to be always present, which is generally true -# However, if someone really doesn't want MPY, we need to use the 600 ver -# which coupled with -mno-mpy will use mpy emulation -# With gcc 4.4.7, -mno-mpy is enough to make any other related adjustments, -# e.g. increased cost of MPY. With gcc 4.2.1 this had to be explicitly hinted - - ifeq ($(upto_gcc42),y) - ARC_LIBGCC := -marc600 - cflags-y += -multcost=30 - endif endif -LIBGCC := $(shell $(CC) $(ARC_LIBGCC) $(cflags-y) --print-libgcc-file-name) +LIBGCC := $(shell $(CC) $(cflags-y) --print-libgcc-file-name) # Modules with short calls might break for calls into builtin-kernel KBUILD_CFLAGS_MODULE += -mlong-calls diff --git a/arch/arc/boot/dts/angel4.dts b/arch/arc/boot/dts/angel4.dts index 6b57475967a6..757e0c62c4f9 100644 --- a/arch/arc/boot/dts/angel4.dts +++ b/arch/arc/boot/dts/angel4.dts @@ -24,11 +24,6 @@ serial0 = &arcuart0; }; - memory { - device_type = "memory"; - reg = <0x00000000 0x10000000>; /* 256M */ - }; - fpga { compatible = "simple-bus"; #address-cells = <1>; diff --git a/arch/arc/boot/dts/nsimosci.dts b/arch/arc/boot/dts/nsimosci.dts index 4f31b2eb5cdf..cfaedd9c61c9 100644 --- a/arch/arc/boot/dts/nsimosci.dts +++ b/arch/arc/boot/dts/nsimosci.dts @@ -20,18 +20,13 @@ /* this is for console on PGU */ /* bootargs = "console=tty0 consoleblank=0"; */ /* this is for console on serial */ - bootargs = "earlycon=uart8250,mmio32,0xc0000000,115200n8 console=ttyS0,115200n8 consoleblank=0 debug"; + bootargs = "earlycon=uart8250,mmio32,0xc0000000,115200n8 console=tty0 console=ttyS0,115200n8 consoleblank=0 debug"; }; aliases { serial0 = &uart0; }; - memory { - device_type = "memory"; - reg = <0x80000000 0x10000000>; /* 256M */ - }; - fpga { compatible = "simple-bus"; #address-cells = <1>; diff --git a/arch/arc/configs/fpga_defconfig b/arch/arc/configs/fpga_defconfig index e283aa586934..ef4d3bc7b6c0 100644 --- a/arch/arc/configs/fpga_defconfig +++ b/arch/arc/configs/fpga_defconfig @@ -23,7 +23,6 @@ CONFIG_MODULES=y # CONFIG_IOSCHED_DEADLINE is not set # CONFIG_IOSCHED_CFQ is not set CONFIG_ARC_PLAT_FPGA_LEGACY=y -CONFIG_ARC_BOARD_ML509=y # CONFIG_ARC_HAS_RTSC is not set CONFIG_ARC_BUILTIN_DTB_NAME="angel4" CONFIG_PREEMPT=y diff --git a/arch/arc/configs/fpga_noramfs_defconfig b/arch/arc/configs/fpga_noramfs_defconfig index 5276a52f6a2f..49c93011ab96 100644 --- a/arch/arc/configs/fpga_noramfs_defconfig +++ b/arch/arc/configs/fpga_noramfs_defconfig @@ -20,7 +20,6 @@ CONFIG_MODULES=y # CONFIG_IOSCHED_DEADLINE is not set # CONFIG_IOSCHED_CFQ is not set CONFIG_ARC_PLAT_FPGA_LEGACY=y -CONFIG_ARC_BOARD_ML509=y # CONFIG_ARC_HAS_RTSC is not set CONFIG_ARC_BUILTIN_DTB_NAME="angel4" CONFIG_PREEMPT=y diff --git a/arch/arc/configs/nsimosci_defconfig b/arch/arc/configs/nsimosci_defconfig index c01ba35a4eff..278dacf2a3f9 100644 --- a/arch/arc/configs/nsimosci_defconfig +++ b/arch/arc/configs/nsimosci_defconfig @@ -21,7 +21,6 @@ CONFIG_MODULES=y # CONFIG_IOSCHED_DEADLINE is not set # CONFIG_IOSCHED_CFQ is not set CONFIG_ARC_PLAT_FPGA_LEGACY=y -CONFIG_ARC_BOARD_ML509=y # CONFIG_ARC_IDE is not set # CONFIG_ARCTANGENT_EMAC is not set # CONFIG_ARC_HAS_RTSC is not set diff --git a/arch/arc/include/asm/arcregs.h b/arch/arc/include/asm/arcregs.h index 372466b371bf..be33db8a2ee3 100644 --- a/arch/arc/include/asm/arcregs.h +++ b/arch/arc/include/asm/arcregs.h @@ -9,19 +9,16 @@ #ifndef _ASM_ARC_ARCREGS_H #define _ASM_ARC_ARCREGS_H -#ifdef __KERNEL__ - /* Build Configuration Registers */ #define ARC_REG_DCCMBASE_BCR 0x61 /* DCCM Base Addr */ #define ARC_REG_CRC_BCR 0x62 -#define ARC_REG_DVFB_BCR 0x64 -#define ARC_REG_EXTARITH_BCR 0x65 #define ARC_REG_VECBASE_BCR 0x68 #define ARC_REG_PERIBASE_BCR 0x69 -#define ARC_REG_FP_BCR 0x6B /* Single-Precision FPU */ -#define ARC_REG_DPFP_BCR 0x6C /* Dbl Precision FPU */ +#define ARC_REG_FP_BCR 0x6B /* ARCompact: Single-Precision FPU */ +#define ARC_REG_DPFP_BCR 0x6C /* ARCompact: Dbl Precision FPU */ #define ARC_REG_DCCM_BCR 0x74 /* DCCM Present + SZ */ #define ARC_REG_TIMERS_BCR 0x75 +#define ARC_REG_AP_BCR 0x76 #define ARC_REG_ICCM_BCR 0x78 #define ARC_REG_XY_MEM_BCR 0x79 #define ARC_REG_MAC_BCR 0x7a @@ -31,6 +28,9 @@ #define ARC_REG_MIXMAX_BCR 0x7e #define ARC_REG_BARREL_BCR 0x7f #define ARC_REG_D_UNCACH_BCR 0x6A +#define ARC_REG_BPU_BCR 0xc0 +#define ARC_REG_ISA_CFG_BCR 0xc1 +#define ARC_REG_SMART_BCR 0xFF /* status32 Bits Positions */ #define STATUS_AE_BIT 5 /* Exception active */ @@ -191,14 +191,6 @@ #define PAGES_TO_KB(n_pages) ((n_pages) << (PAGE_SHIFT - 10)) #define PAGES_TO_MB(n_pages) (PAGES_TO_KB(n_pages) >> 10) -#ifdef CONFIG_ARC_FPU_SAVE_RESTORE -/* These DPFP regs need to be saved/restored across ctx-sw */ -struct arc_fpu { - struct { - unsigned int l, h; - } aux_dpfp[2]; -}; -#endif /* *************************************************************** @@ -212,27 +204,19 @@ struct bcr_identity { #endif }; -#define EXTN_SWAP_VALID 0x1 -#define EXTN_NORM_VALID 0x2 -#define EXTN_MINMAX_VALID 0x2 -#define EXTN_BARREL_VALID 0x2 - -struct bcr_extn { +struct bcr_isa { #ifdef CONFIG_CPU_BIG_ENDIAN - unsigned int pad:20, crc:1, ext_arith:2, mul:2, barrel:2, minmax:2, - norm:2, swap:1; + unsigned int pad1:23, atomic1:1, ver:8; #else - unsigned int swap:1, norm:2, minmax:2, barrel:2, mul:2, ext_arith:2, - crc:1, pad:20; + unsigned int ver:8, atomic1:1, pad1:23; #endif }; -/* DSP Options Ref Manual */ -struct bcr_extn_mac_mul { +struct bcr_mpy { #ifdef CONFIG_CPU_BIG_ENDIAN - unsigned int pad:16, type:8, ver:8; + unsigned int pad:8, x1616:8, dsp:4, cycles:2, type:2, ver:8; #else - unsigned int ver:8, type:8, pad:16; + unsigned int ver:8, type:2, cycles:2, dsp:4, x1616:8, pad:8; #endif }; @@ -251,6 +235,7 @@ struct bcr_perip { unsigned int pad:8, sz:8, pad2:8, start:8; #endif }; + struct bcr_iccm { #ifdef CONFIG_CPU_BIG_ENDIAN unsigned int base:16, pad:5, sz:3, ver:8; @@ -277,8 +262,8 @@ struct bcr_dccm { #endif }; -/* Both SP and DP FPU BCRs have same format */ -struct bcr_fp { +/* ARCompact: Both SP and DP FPU BCRs have same format */ +struct bcr_fp_arcompact { #ifdef CONFIG_CPU_BIG_ENDIAN unsigned int fast:1, ver:8; #else @@ -286,6 +271,30 @@ struct bcr_fp { #endif }; +struct bcr_timer { +#ifdef CONFIG_CPU_BIG_ENDIAN + unsigned int pad2:15, rtsc:1, pad1:6, t1:1, t0:1, ver:8; +#else + unsigned int ver:8, t0:1, t1:1, pad1:6, rtsc:1, pad2:15; +#endif +}; + +struct bcr_bpu_arcompact { +#ifdef CONFIG_CPU_BIG_ENDIAN + unsigned int pad2:19, fam:1, pad:2, ent:2, ver:8; +#else + unsigned int ver:8, ent:2, pad:2, fam:1, pad2:19; +#endif +}; + +struct bcr_generic { +#ifdef CONFIG_CPU_BIG_ENDIAN + unsigned int pad:24, ver:8; +#else + unsigned int ver:8, pad:24; +#endif +}; + /* ******************************************************************* * Generic structures to hold build configuration used at runtime @@ -299,6 +308,10 @@ struct cpuinfo_arc_cache { unsigned int sz_k:8, line_len:8, assoc:4, ver:4, alias:1, vipt:1, pad:6; }; +struct cpuinfo_arc_bpu { + unsigned int ver, full, num_cache, num_pred; +}; + struct cpuinfo_arc_ccm { unsigned int base_addr, sz; }; @@ -306,21 +319,25 @@ struct cpuinfo_arc_ccm { struct cpuinfo_arc { struct cpuinfo_arc_cache icache, dcache; struct cpuinfo_arc_mmu mmu; + struct cpuinfo_arc_bpu bpu; struct bcr_identity core; - unsigned int timers; + struct bcr_isa isa; + struct bcr_timer timers; unsigned int vec_base; unsigned int uncached_base; struct cpuinfo_arc_ccm iccm, dccm; - struct bcr_extn extn; + struct { + unsigned int swap:1, norm:1, minmax:1, barrel:1, crc:1, pad1:3, + fpu_sp:1, fpu_dp:1, pad2:6, + debug:1, ap:1, smart:1, rtt:1, pad3:4, + pad4:8; + } extn; + struct bcr_mpy extn_mpy; struct bcr_extn_xymem extn_xymem; - struct bcr_extn_mac_mul extn_mac_mul; - struct bcr_fp fp, dpfp; }; extern struct cpuinfo_arc cpuinfo_arc700[]; #endif /* __ASEMBLY__ */ -#endif /* __KERNEL__ */ - #endif /* _ASM_ARC_ARCREGS_H */ diff --git a/arch/arc/include/asm/atomic.h b/arch/arc/include/asm/atomic.h index 173f303a868f..067551b6920a 100644 --- a/arch/arc/include/asm/atomic.h +++ b/arch/arc/include/asm/atomic.h @@ -9,8 +9,6 @@ #ifndef _ASM_ARC_ATOMIC_H #define _ASM_ARC_ATOMIC_H -#ifdef __KERNEL__ - #ifndef __ASSEMBLY__ #include <linux/types.h> @@ -170,5 +168,3 @@ ATOMIC_OP(and, &=, and) #endif #endif - -#endif diff --git a/arch/arc/include/asm/bitops.h b/arch/arc/include/asm/bitops.h index ebc0cf3164dc..1a5bf07eefe2 100644 --- a/arch/arc/include/asm/bitops.h +++ b/arch/arc/include/asm/bitops.h @@ -13,8 +13,6 @@ #error only <linux/bitops.h> can be included directly #endif -#ifdef __KERNEL__ - #ifndef __ASSEMBLY__ #include <linux/types.h> @@ -508,6 +506,4 @@ static inline __attribute__ ((const)) int __ffs(unsigned long word) #endif /* !__ASSEMBLY__ */ -#endif /* __KERNEL__ */ - #endif diff --git a/arch/arc/include/asm/bug.h b/arch/arc/include/asm/bug.h index 5b18e94c6678..ea022d47896c 100644 --- a/arch/arc/include/asm/bug.h +++ b/arch/arc/include/asm/bug.h @@ -21,10 +21,9 @@ void show_kernel_fault_diag(const char *str, struct pt_regs *regs, unsigned long address); void die(const char *str, struct pt_regs *regs, unsigned long address); -#define BUG() do { \ - dump_stack(); \ - pr_warn("Kernel BUG in %s: %s: %d!\n", \ - __FILE__, __func__, __LINE__); \ +#define BUG() do { \ + pr_warn("BUG: failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); \ + dump_stack(); \ } while (0) #define HAVE_ARCH_BUG diff --git a/arch/arc/include/asm/cache.h b/arch/arc/include/asm/cache.h index b3c750979aa1..7861255da32d 100644 --- a/arch/arc/include/asm/cache.h +++ b/arch/arc/include/asm/cache.h @@ -20,7 +20,7 @@ #define CACHE_LINE_MASK (~(L1_CACHE_BYTES - 1)) /* - * ARC700 doesn't cache any access in top 256M. + * ARC700 doesn't cache any access in top 1G (0xc000_0000 to 0xFFFF_FFFF) * Ideal for wiring memory mapped peripherals as we don't need to do * explicit uncached accesses (LD.di/ST.di) hence more portable drivers */ diff --git a/arch/arc/include/asm/current.h b/arch/arc/include/asm/current.h index 87b918585c4a..c2453ee62801 100644 --- a/arch/arc/include/asm/current.h +++ b/arch/arc/include/asm/current.h @@ -12,8 +12,6 @@ #ifndef _ASM_ARC_CURRENT_H #define _ASM_ARC_CURRENT_H -#ifdef __KERNEL__ - #ifndef __ASSEMBLY__ #ifdef CONFIG_ARC_CURR_IN_REG @@ -27,6 +25,4 @@ register struct task_struct *curr_arc asm("r25"); #endif /* ! __ASSEMBLY__ */ -#endif /* __KERNEL__ */ - #endif /* _ASM_ARC_CURRENT_H */ diff --git a/arch/arc/include/asm/irqflags.h b/arch/arc/include/asm/irqflags.h index 587df8236e8b..742816f1b210 100644 --- a/arch/arc/include/asm/irqflags.h +++ b/arch/arc/include/asm/irqflags.h @@ -15,8 +15,6 @@ * -Conditionally disable interrupts (if they are not enabled, don't disable) */ -#ifdef __KERNEL__ - #include <asm/arcregs.h> /* status32 Reg bits related to Interrupt Handling */ @@ -169,6 +167,4 @@ static inline int arch_irqs_disabled(void) #endif /* __ASSEMBLY__ */ -#endif /* KERNEL */ - #endif diff --git a/arch/arc/include/asm/kgdb.h b/arch/arc/include/asm/kgdb.h index b65fca7ffeb5..fea931634136 100644 --- a/arch/arc/include/asm/kgdb.h +++ b/arch/arc/include/asm/kgdb.h @@ -19,7 +19,7 @@ * register API yet */ #undef DBG_MAX_REG_NUM -#define GDB_MAX_REGS 39 +#define GDB_MAX_REGS 87 #define BREAK_INSTR_SIZE 2 #define CACHE_FLUSH_IS_SAFE 1 @@ -33,23 +33,27 @@ static inline void arch_kgdb_breakpoint(void) extern void kgdb_trap(struct pt_regs *regs); -enum arc700_linux_regnums { +/* This is the numbering of registers according to the GDB. See GDB's + * arc-tdep.h for details. + * + * Registers are ordered for GDB 7.5. It is incompatible with GDB 6.8. */ +enum arc_linux_regnums { _R0 = 0, _R1, _R2, _R3, _R4, _R5, _R6, _R7, _R8, _R9, _R10, _R11, _R12, _R13, _R14, _R15, _R16, _R17, _R18, _R19, _R20, _R21, _R22, _R23, _R24, _R25, _R26, - _BTA = 27, - _LP_START = 28, - _LP_END = 29, - _LP_COUNT = 30, - _STATUS32 = 31, - _BLINK = 32, - _FP = 33, - __SP = 34, - _EFA = 35, - _RET = 36, - _ORIG_R8 = 37, - _STOP_PC = 38 + _FP = 27, + __SP = 28, + _R30 = 30, + _BLINK = 31, + _LP_COUNT = 60, + _STOP_PC = 64, + _RET = 64, + _LP_START = 65, + _LP_END = 66, + _STATUS32 = 67, + _ECR = 76, + _BTA = 82, }; #else diff --git a/arch/arc/include/asm/processor.h b/arch/arc/include/asm/processor.h index 82588f3ba77f..210fe97464c3 100644 --- a/arch/arc/include/asm/processor.h +++ b/arch/arc/include/asm/processor.h @@ -14,12 +14,19 @@ #ifndef __ASM_ARC_PROCESSOR_H #define __ASM_ARC_PROCESSOR_H -#ifdef __KERNEL__ - #ifndef __ASSEMBLY__ #include <asm/ptrace.h> +#ifdef CONFIG_ARC_FPU_SAVE_RESTORE +/* These DPFP regs need to be saved/restored across ctx-sw */ +struct arc_fpu { + struct { + unsigned int l, h; + } aux_dpfp[2]; +}; +#endif + /* Arch specific stuff which needs to be saved per task. * However these items are not so important so as to earn a place in * struct thread_info @@ -128,6 +135,4 @@ extern unsigned int get_wchan(struct task_struct *p); */ #define TASK_UNMAPPED_BASE (TASK_SIZE / 3) -#endif /* __KERNEL__ */ - #endif /* __ASM_ARC_PROCESSOR_H */ diff --git a/arch/arc/include/asm/setup.h b/arch/arc/include/asm/setup.h index e10f8cef56a8..6e3ef5ba4f74 100644 --- a/arch/arc/include/asm/setup.h +++ b/arch/arc/include/asm/setup.h @@ -29,7 +29,6 @@ struct cpuinfo_data { }; extern int root_mountflags, end_mem; -extern int running_on_hw; void setup_processor(void); void __init setup_arch_memory(void); diff --git a/arch/arc/include/asm/smp.h b/arch/arc/include/asm/smp.h index 5d06eee43ea9..3845b9e94f69 100644 --- a/arch/arc/include/asm/smp.h +++ b/arch/arc/include/asm/smp.h @@ -59,7 +59,15 @@ struct plat_smp_ops { /* TBD: stop exporting it for direct population by platform */ extern struct plat_smp_ops plat_smp_ops; -#endif /* CONFIG_SMP */ +#else /* CONFIG_SMP */ + +static inline void smp_init_cpus(void) {} +static inline const char *arc_platform_smp_cpuinfo(void) +{ + return ""; +} + +#endif /* !CONFIG_SMP */ /* * ARC700 doesn't support atomic Read-Modify-Write ops. diff --git a/arch/arc/include/asm/string.h b/arch/arc/include/asm/string.h index 87676c8f1412..95822b550a18 100644 --- a/arch/arc/include/asm/string.h +++ b/arch/arc/include/asm/string.h @@ -17,8 +17,6 @@ #include <linux/types.h> -#ifdef __KERNEL__ - #define __HAVE_ARCH_MEMSET #define __HAVE_ARCH_MEMCPY #define __HAVE_ARCH_MEMCMP @@ -36,5 +34,4 @@ extern char *strcpy(char *dest, const char *src); extern int strcmp(const char *cs, const char *ct); extern __kernel_size_t strlen(const char *); -#endif /* __KERNEL__ */ #endif /* _ASM_ARC_STRING_H */ diff --git a/arch/arc/include/asm/syscalls.h b/arch/arc/include/asm/syscalls.h index dd785befe7fd..e56f9fcc5581 100644 --- a/arch/arc/include/asm/syscalls.h +++ b/arch/arc/include/asm/syscalls.h @@ -9,8 +9,6 @@ #ifndef _ASM_ARC_SYSCALLS_H #define _ASM_ARC_SYSCALLS_H 1 -#ifdef __KERNEL__ - #include <linux/compiler.h> #include <linux/linkage.h> #include <linux/types.h> @@ -22,6 +20,4 @@ int sys_arc_gettls(void); #include <asm-generic/syscalls.h> -#endif /* __KERNEL__ */ - #endif diff --git a/arch/arc/include/asm/thread_info.h b/arch/arc/include/asm/thread_info.h index 45be21672011..02bc5ec0fb2e 100644 --- a/arch/arc/include/asm/thread_info.h +++ b/arch/arc/include/asm/thread_info.h @@ -16,8 +16,6 @@ #ifndef _ASM_THREAD_INFO_H #define _ASM_THREAD_INFO_H -#ifdef __KERNEL__ - #include <asm/page.h> #ifdef CONFIG_16KSTACKS @@ -114,6 +112,4 @@ static inline __attribute_const__ struct thread_info *current_thread_info(void) * syscall, so all that reamins to be tested is _TIF_WORK_MASK */ -#endif /* __KERNEL__ */ - #endif /* _ASM_THREAD_INFO_H */ diff --git a/arch/arc/include/asm/unaligned.h b/arch/arc/include/asm/unaligned.h index 3e5f071bc00c..6da6b4edaeda 100644 --- a/arch/arc/include/asm/unaligned.h +++ b/arch/arc/include/asm/unaligned.h @@ -14,7 +14,7 @@ #include <asm-generic/unaligned.h> #include <asm/ptrace.h> -#ifdef CONFIG_ARC_MISALIGN_ACCESS +#ifdef CONFIG_ARC_EMUL_UNALIGNED int misaligned_fixup(unsigned long address, struct pt_regs *regs, struct callee_regs *cregs); #else diff --git a/arch/arc/kernel/Makefile b/arch/arc/kernel/Makefile index 8004b4fa6461..113f2033da9f 100644 --- a/arch/arc/kernel/Makefile +++ b/arch/arc/kernel/Makefile @@ -16,7 +16,7 @@ obj-$(CONFIG_MODULES) += arcksyms.o module.o obj-$(CONFIG_SMP) += smp.o obj-$(CONFIG_ARC_DW2_UNWIND) += unwind.o obj-$(CONFIG_KPROBES) += kprobes.o -obj-$(CONFIG_ARC_MISALIGN_ACCESS) += unaligned.o +obj-$(CONFIG_ARC_EMUL_UNALIGNED) += unaligned.o obj-$(CONFIG_KGDB) += kgdb.o obj-$(CONFIG_ARC_METAWARE_HLINK) += arc_hostlink.o obj-$(CONFIG_PERF_EVENTS) += perf_event.o diff --git a/arch/arc/kernel/disasm.c b/arch/arc/kernel/disasm.c index b8a549c4f540..3b7cd4864ba2 100644 --- a/arch/arc/kernel/disasm.c +++ b/arch/arc/kernel/disasm.c @@ -15,7 +15,7 @@ #include <linux/uaccess.h> #include <asm/disasm.h> -#if defined(CONFIG_KGDB) || defined(CONFIG_ARC_MISALIGN_ACCESS) || \ +#if defined(CONFIG_KGDB) || defined(CONFIG_ARC_EMUL_UNALIGNED) || \ defined(CONFIG_KPROBES) /* disasm_instr: Analyses instruction at addr, stores @@ -535,4 +535,4 @@ int __kprobes disasm_next_pc(unsigned long pc, struct pt_regs *regs, return instr.is_branch; } -#endif /* CONFIG_KGDB || CONFIG_ARC_MISALIGN_ACCESS || CONFIG_KPROBES */ +#endif /* CONFIG_KGDB || CONFIG_ARC_EMUL_UNALIGNED || CONFIG_KPROBES */ diff --git a/arch/arc/kernel/head.S b/arch/arc/kernel/head.S index 4d2481bd8b98..b0e8666fdccc 100644 --- a/arch/arc/kernel/head.S +++ b/arch/arc/kernel/head.S @@ -91,16 +91,6 @@ stext: st r0, [@uboot_tag] st r2, [@uboot_arg] - ; Identify if running on ISS vs Silicon - ; IDENTITY Reg [ 3 2 1 0 ] - ; (chip-id) ^^^^^ ==> 0xffff for ISS - lr r0, [identity] - lsr r3, r0, 16 - cmp r3, 0xffff - mov.z r4, 0 - mov.nz r4, 1 - st r4, [@running_on_hw] - ; setup "current" tsk and optionally cache it in dedicated r25 mov r9, @init_task SET_CURR_TASK_ON_CPU r9, r0 ; r9 = tsk, r0 = scratch diff --git a/arch/arc/kernel/perf_event.c b/arch/arc/kernel/perf_event.c index b9a5685a990e..ae1c485cbc68 100644 --- a/arch/arc/kernel/perf_event.c +++ b/arch/arc/kernel/perf_event.c @@ -244,25 +244,23 @@ static int arc_pmu_device_probe(struct platform_device *pdev) pr_err("This core does not have performance counters!\n"); return -ENODEV; } + BUG_ON(pct_bcr.c > ARC_PMU_MAX_HWEVENTS); - arc_pmu = devm_kzalloc(&pdev->dev, sizeof(struct arc_pmu), - GFP_KERNEL); + READ_BCR(ARC_REG_CC_BUILD, cc_bcr); + if (!cc_bcr.v) { + pr_err("Performance counters exist, but no countable conditions?\n"); + return -ENODEV; + } + + arc_pmu = devm_kzalloc(&pdev->dev, sizeof(struct arc_pmu), GFP_KERNEL); if (!arc_pmu) return -ENOMEM; arc_pmu->n_counters = pct_bcr.c; - BUG_ON(arc_pmu->n_counters > ARC_PMU_MAX_HWEVENTS); - arc_pmu->counter_size = 32 + (pct_bcr.s << 4); - pr_info("ARC PMU found with %d counters of size %d bits\n", - arc_pmu->n_counters, arc_pmu->counter_size); - - READ_BCR(ARC_REG_CC_BUILD, cc_bcr); - - if (!cc_bcr.v) - pr_err("Strange! Performance counters exist, but no countable conditions?\n"); - pr_info("ARC PMU has %d countable conditions\n", cc_bcr.c); + pr_info("ARC perf\t: %d counters (%d bits), %d countable conditions\n", + arc_pmu->n_counters, arc_pmu->counter_size, cc_bcr.c); cc_name.str[8] = 0; for (i = 0; i < PERF_COUNT_HW_MAX; i++) diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c index 119dddb752b2..252bf603db9c 100644 --- a/arch/arc/kernel/setup.c +++ b/arch/arc/kernel/setup.c @@ -13,7 +13,9 @@ #include <linux/console.h> #include <linux/module.h> #include <linux/cpu.h> +#include <linux/clk-provider.h> #include <linux/of_fdt.h> +#include <linux/of_platform.h> #include <linux/cache.h> #include <asm/sections.h> #include <asm/arcregs.h> @@ -24,11 +26,10 @@ #include <asm/unwind.h> #include <asm/clk.h> #include <asm/mach_desc.h> +#include <asm/smp.h> #define FIX_PTR(x) __asm__ __volatile__(";" : "+r"(x)) -int running_on_hw = 1; /* vs. on ISS */ - /* Part of U-boot ABI: see head.S */ int __initdata uboot_tag; char __initdata *uboot_arg; @@ -42,26 +43,26 @@ struct cpuinfo_arc cpuinfo_arc700[NR_CPUS]; static void read_arc_build_cfg_regs(void) { struct bcr_perip uncached_space; + struct bcr_generic bcr; struct cpuinfo_arc *cpu = &cpuinfo_arc700[smp_processor_id()]; FIX_PTR(cpu); READ_BCR(AUX_IDENTITY, cpu->core); |