diff options
| -rw-r--r-- | arch/hexagon/Kconfig | 220 | ||||
| -rw-r--r-- | arch/hexagon/Makefile | 58 | ||||
| -rw-r--r-- | arch/hexagon/kernel/Makefile | 18 | ||||
| -rw-r--r-- | arch/hexagon/kernel/asm-offsets.c | 104 | ||||
| -rw-r--r-- | arch/hexagon/kernel/vmlinux.lds.S | 88 | ||||
| -rw-r--r-- | arch/hexagon/lib/Makefile | 4 | ||||
| -rw-r--r-- | arch/hexagon/mm/Makefile | 6 |
7 files changed, 498 insertions, 0 deletions
diff --git a/arch/hexagon/Kconfig b/arch/hexagon/Kconfig new file mode 100644 index 000000000000..02513c2dd5ec --- /dev/null +++ b/arch/hexagon/Kconfig @@ -0,0 +1,220 @@ +# Hexagon configuration +comment "Linux Kernel Configuration for Hexagon" + +config HEXAGON + def_bool y + select HAVE_OPROFILE + select USE_GENERIC_SMP_HELPERS if SMP + # Other pending projects/to-do items. + # select HAVE_REGS_AND_STACK_ACCESS_API + # select HAVE_HW_BREAKPOINT if PERF_EVENTS + # select ARCH_HAS_CPU_IDLE_WAIT + # select ARCH_WANT_OPTIONAL_GPIOLIB + # select ARCH_REQUIRE_GPIOLIB + # select HAVE_CLK + # select IRQ_PER_CPU + select HAVE_IRQ_WORK + # select GENERIC_PENDING_IRQ if SMP + select GENERIC_ATOMIC64 + select HAVE_PERF_EVENTS + select HAVE_GENERIC_HARDIRQS + select GENERIC_HARDIRQS_NO__DO_IRQ + select GENERIC_HARDIRQS_NO_DEPRECATED + # GENERIC_ALLOCATOR is used by dma_alloc_coherent() + select GENERIC_ALLOCATOR + select GENERIC_IRQ_SHOW + select HAVE_ARCH_KGDB + select HAVE_ARCH_TRACEHOOK + select NO_IOPORT + # mostly generic routines, with some accelerated ones + ---help--- + Qualcomm Hexagon is a processor architecture designed for high + performance and low power across a wide variety of applications. + +config HEXAGON_ARCH_V1 + bool + +config HEXAGON_ARCH_V2 + bool + +config HEXAGON_ARCH_V3 + bool + +config HEXAGON_ARCH_V4 + bool + +config FRAME_POINTER + def_bool y + +config LOCKDEP_SUPPORT + def_bool y + +config PCI + def_bool n + +config EARLY_PRINTK + def_bool y + +config KTIME_SCALAR + def_bool y + +config MMU + def_bool y + +config TRACE_IRQFLAGS_SUPPORT + def_bool y + +config GENERIC_CSUM + def_bool y + +# +# Use the generic interrupt handling code in kernel/irq/: +# +config GENERIC_IRQ_PROBE + def_bool y + +config GENERIC_IOMAP + def_bool y + +#config ZONE_DMA +# bool +# default y + +config HAS_DMA + bool + select HAVE_DMA_ATTRS + default y + +config NEED_SG_DMA_LENGTH + def_bool y + +config RWSEM_GENERIC_SPINLOCK + def_bool n + +config RWSEM_XCHGADD_ALGORITHM + def_bool y + +config GENERIC_FIND_NEXT_BIT + def_bool y + +config GENERIC_HWEIGHT + def_bool y + +config GENERIC_TIME + def_bool y + +config GENERIC_CLOCKEVENTS + def_bool y + +config GENERIC_CLOCKEVENTS_BROADCAST + def_bool y + +config STACKTRACE_SUPPORT + def_bool y + select STACKTRACE + +config GENERIC_BUG + def_bool y + depends on BUG + +config BUG + def_bool y + +menu "Machine selection" + +choice + prompt "System type" + default HEXAGON_ARCH_V2 + +config HEXAGON_COMET + bool "Comet Board" + select HEXAGON_ARCH_V2 + ---help--- + Support for the Comet platform. + +endchoice + +config HEXAGON_VM + def_bool y + +config CMDLINE + string "Default kernel command string" + default "" + help + On some platforms, there is currently no way for the boot loader + to pass arguments to the kernel. For these, you should supply some + command-line options at build time by entering them here. At a + minimum, you should specify the memory size and the root device + (e.g., mem=64M root=/dev/nfs). + +config HEXAGON_ANGEL_TRAPS + bool "Use Angel Traps" + default n + ---help--- + Enable angel debug traps (for printk's). + +config SMP + bool "Multi-Processing support" + ---help--- + Enables SMP support in the kernel. If unsure, say "Y" + +config NR_CPUS + int "Maximum number of CPUs" if SMP + range 2 6 if SMP + default "1" if !SMP + default "6" if SMP + ---help--- + This allows you to specify the maximum number of CPUs which this + kernel will support. The maximum supported value is 6 and the + minimum value which makes sense is 2. + + This is purely to save memory - each supported CPU adds + approximately eight kilobytes to the kernel image. + +choice + prompt "Kernel page size" + default PAGE_SIZE_4KB + ---help--- + Changes the default page size; use with caution. + +config PAGE_SIZE_4KB + bool "4KB" + +config PAGE_SIZE_16KB + bool "16KB" + +config PAGE_SIZE_64KB + bool "64KB" + +config PAGE_SIZE_256KB + bool "256KB" + +endchoice + +source "mm/Kconfig" + +source "kernel/Kconfig.hz" +source "kernel/time/Kconfig" + +config GENERIC_GPIO + bool "Generic GPIO support" + default n + +endmenu + +source "init/Kconfig" +source "drivers/Kconfig" +source "fs/Kconfig" + +menu "Executable File Formats" +source "fs/Kconfig.binfmt" +endmenu + +source "net/Kconfig" +source "security/Kconfig" +source "crypto/Kconfig" +source "lib/Kconfig" + +menu "Kernel hacking" +source "lib/Kconfig.debug" +endmenu diff --git a/arch/hexagon/Makefile b/arch/hexagon/Makefile new file mode 100644 index 000000000000..0c4de8790fd5 --- /dev/null +++ b/arch/hexagon/Makefile @@ -0,0 +1,58 @@ +# Makefile for the Hexagon arch + +KBUILD_DEFCONFIG = comet_defconfig + +# Do not use GP-relative jumps +KBUILD_CFLAGS += -G0 +LDFLAGS_vmlinux += -G0 + +# Do not use single-byte enums; these will overflow. +KBUILD_CFLAGS += -fno-short-enums + +# Modules must use either long-calls, or use pic/plt. +# Use long-calls for now, it's easier. And faster. +# CFLAGS_MODULE += -fPIC +# LDFLAGS_MODULE += -shared +CFLAGS_MODULE += -mlong-calls + +cflags-$(CONFIG_HEXAGON_ARCH_V1) += $(call cc-option,-mv1) +cflags-$(CONFIG_HEXAGON_ARCH_V2) += $(call cc-option,-mv2) +cflags-$(CONFIG_HEXAGON_ARCH_V3) += $(call cc-option,-mv3) +cflags-$(CONFIG_HEXAGON_ARCH_V4) += $(call cc-option,-mv4) + +aflags-$(CONFIG_HEXAGON_ARCH_V1) += $(call cc-option,-mv1) +aflags-$(CONFIG_HEXAGON_ARCH_V2) += $(call cc-option,-mv2) +aflags-$(CONFIG_HEXAGON_ARCH_V3) += $(call cc-option,-mv3) +aflags-$(CONFIG_HEXAGON_ARCH_V4) += $(call cc-option,-mv4) + +ldflags-$(CONFIG_HEXAGON_ARCH_V1) += $(call cc-option,-mv1) +ldflags-$(CONFIG_HEXAGON_ARCH_V2) += $(call cc-option,-mv2) +ldflags-$(CONFIG_HEXAGON_ARCH_V3) += $(call cc-option,-mv3) +ldflags-$(CONFIG_HEXAGON_ARCH_V4) += $(call cc-option,-mv4) + +KBUILD_CFLAGS += $(cflags-y) +KBUILD_AFLAGS += $(aflags-y) + +# no KBUILD_LDFLAGS? +LDFLAGS += $(ldflags-y) + +# Thread-info register will be r19. This value is not configureable; +# it is hard-coded in several files. +TIR_NAME := r19 +KBUILD_CFLAGS += -ffixed-$(TIR_NAME) -DTHREADINFO_REG=$(TIR_NAME) -D__linux__ +KBUILD_AFLAGS += -DTHREADINFO_REG=$(TIR_NAME) + +LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name) +libs-y += $(LIBGCC) + +head-y := arch/hexagon/kernel/head.o \ + arch/hexagon/kernel/init_task.o + +core-y += arch/hexagon/kernel/ \ + arch/hexagon/mm/ \ + arch/hexagon/lib/ + +# arch/hexagon/platform/common/ +# +#core-$(CONFIG_HEXAGON_COMET) += arch/hexagon/platform/comet/ +#machine-$(CONFIG_HEXAGON_COMET) := comet diff --git a/arch/hexagon/kernel/Makefile b/arch/hexagon/kernel/Makefile new file mode 100644 index 000000000000..3689f3754d09 --- /dev/null +++ b/arch/hexagon/kernel/Makefile @@ -0,0 +1,18 @@ +extra-y := head.o vmlinux.lds init_task.o + +obj-$(CONFIG_SMP) += smp.o topology.o + +obj-y += setup.o irq_cpu.o traps.o syscalltab.o signal.o time.o +obj-y += process.o syscall.o trampoline.o reset.o ptrace.o +obj-y += vdso.o + +obj-$(CONFIG_KGDB) += kgdb.o +obj-$(CONFIG_MODULES) += module.o hexagon_ksyms.o + +# Modules required to work with the Hexagon Virtual Machine +obj-y += vm_entry.o vm_events.o vm_switch.o vm_ops.o vm_init_segtable.o +obj-y += vm_vectors.o + +obj-$(CONFIG_HAS_DMA) += dma.o + +obj-$(CONFIG_STACKTRACE) += stacktrace.o diff --git a/arch/hexagon/kernel/asm-offsets.c b/arch/hexagon/kernel/asm-offsets.c new file mode 100644 index 000000000000..89ffa514611f --- /dev/null +++ b/arch/hexagon/kernel/asm-offsets.c @@ -0,0 +1,104 @@ +/* + * Copyright (C) 1996 David S. Miller + * Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003 Ralf Baechle + * Copyright (C) 1999, 2000 Silicon Graphics, Inc. + * Kevin Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com + * Copyright (C) 2000 MIPS Technologies, Inc. + * + * Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + */ + +#include <linux/compat.h> +#include <linux/types.h> +#include <linux/sched.h> +#include <linux/mm.h> +#include <linux/interrupt.h> +#include <linux/kbuild.h> +#include <asm/ptrace.h> +#include <asm/processor.h> + +/* This file is used to produce asm/linkerscript constants from header + files typically used in c. Specifically, it generates asm-offsets.h */ + +int main(void) +{ + COMMENT("This is a comment."); + /* might get these from somewhere else. */ + DEFINE(_PAGE_SIZE, PAGE_SIZE); + DEFINE(_PAGE_SHIFT, PAGE_SHIFT); + BLANK(); + + COMMENT("Hexagon pt_regs definitions"); + OFFSET(_PT_SYSCALL_NR, pt_regs, syscall_nr); + OFFSET(_PT_UGPGP, pt_regs, ugpgp); + OFFSET(_PT_R3130, pt_regs, r3130); + OFFSET(_PT_R2928, pt_regs, r2928); + OFFSET(_PT_R2726, pt_regs, r2726); + OFFSET(_PT_R2524, pt_regs, r2524); + OFFSET(_PT_R2322, pt_regs, r2322); + OFFSET(_PT_R2120, pt_regs, r2120); + OFFSET(_PT_R1918, pt_regs, r1918); + OFFSET(_PT_R1716, pt_regs, r1716); + OFFSET(_PT_R1514, pt_regs, r1514); + OFFSET(_PT_R1312, pt_regs, r1312); + OFFSET(_PT_R1110, pt_regs, r1110); + OFFSET(_PT_R0908, pt_regs, r0908); + OFFSET(_PT_R0706, pt_regs, r0706); + OFFSET(_PT_R0504, pt_regs, r0504); + OFFSET(_PT_R0302, pt_regs, r0302); + OFFSET(_PT_R0100, pt_regs, r0100); + OFFSET(_PT_LC0SA0, pt_regs, lc0sa0); + OFFSET(_PT_LC1SA1, pt_regs, lc1sa1); + OFFSET(_PT_M1M0, pt_regs, m1m0); + OFFSET(_PT_PREDSUSR, pt_regs, predsusr); + OFFSET(_PT_EVREC, pt_regs, hvmer); + OFFSET(_PT_ER_VMEL, pt_regs, hvmer.vmel); + OFFSET(_PT_ER_VMEST, pt_regs, hvmer.vmest); + OFFSET(_PT_ER_VMPSP, pt_regs, hvmer.vmpsp); + OFFSET(_PT_ER_VMBADVA, pt_regs, hvmer.vmbadva); + DEFINE(_PT_REGS_SIZE, sizeof(struct pt_regs)); + BLANK(); + + COMMENT("Hexagon thread_info definitions"); + OFFSET(_THREAD_INFO_FLAGS, thread_info, flags); + OFFSET(_THREAD_INFO_PT_REGS, thread_info, regs); + OFFSET(_THREAD_INFO_SP, thread_info, sp); + DEFINE(_THREAD_SIZE, THREAD_SIZE); + BLANK(); + + COMMENT("Hexagon hexagon_switch_stack definitions"); + OFFSET(_SWITCH_R1716, hexagon_switch_stack, r1716); + OFFSET(_SWITCH_R1918, hexagon_switch_stack, r1918); + OFFSET(_SWITCH_R2120, hexagon_switch_stack, r2120); + OFFSET(_SWITCH_R2322, hexagon_switch_stack, r2322); + + OFFSET(_SWITCH_R2524, hexagon_switch_stack, r2524); + OFFSET(_SWITCH_R2726, hexagon_switch_stack, r2726); + OFFSET(_SWITCH_FP, hexagon_switch_stack, fp); + OFFSET(_SWITCH_LR, hexagon_switch_stack, lr); + DEFINE(_SWITCH_STACK_SIZE, sizeof(struct hexagon_switch_stack)); + BLANK(); + + COMMENT("Hexagon task_struct definitions"); + OFFSET(_TASK_THREAD_INFO, task_struct, stack); + OFFSET(_TASK_STRUCT_THREAD, task_struct, thread); + + COMMENT("Hexagon thread_struct definitions"); + OFFSET(_THREAD_STRUCT_SWITCH_SP, thread_struct, switch_sp); + + return 0; +} diff --git a/arch/hexagon/kernel/vmlinux.lds.S b/arch/hexagon/kernel/vmlinux.lds.S new file mode 100644 index 000000000000..071d3c30edfb --- /dev/null +++ b/arch/hexagon/kernel/vmlinux.lds.S @@ -0,0 +1,88 @@ +/* + * Linker script for Hexagon kernel + * + * Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + */ + +#define LOAD_OFFSET PAGE_OFFSET + +#include <asm-generic/vmlinux.lds.h> +#include <asm/asm-offsets.h> /* Most of the kernel defines are here */ +#include <asm/mem-layout.h> /* except for page_offset */ +#include <asm/cache.h> /* and now we're pulling cache line size */ +OUTPUT_ARCH(hexagon) +ENTRY(stext) + +jiffies = jiffies_64; + +/* +See asm-generic/vmlinux.lds.h for expansion of some of these macros. +See asm-generic/sections.h for seemingly required labels. +*/ + +#define PAGE_SIZE _PAGE_SIZE + +/* This LOAD_OFFSET is temporary for debugging on the simulator; it may change + for hypervisor pseudo-physical memory. */ + + +SECTIONS +{ + . = PAGE_OFFSET + LOAD_ADDRESS; + + __init_begin = .; + HEAD_TEXT_SECTION + INIT_TEXT_SECTION(PAGE_SIZE) + PERCPU_SECTION(L1_CACHE_BYTES) + __init_end = .; + + . = ALIGN(_PAGE_SIZE); + _stext = .; + .text : AT(ADDR(.text) - LOAD_OFFSET) { + _text = .; + TEXT_TEXT + SCHED_TEXT + LOCK_TEXT + KPROBES_TEXT + *(.fixup) + } + _etext = .; + + INIT_DATA_SECTION(PAGE_SIZE) + + _sdata = .; + RW_DATA_SECTION(32,PAGE_SIZE,PAGE_SIZE) + RO_DATA_SECTION(PAGE_SIZE) + _edata = .; + + EXCEPTION_TABLE(16) + NOTES + + BSS_SECTION(_PAGE_SIZE, _PAGE_SIZE, _PAGE_SIZE) + + _end = .; + + /DISCARD/ : { + EXIT_TEXT + EXIT_DATA + EXIT_CALL + } + + STABS_DEBUG + DWARF_DEBUG + +} diff --git a/arch/hexagon/lib/Makefile b/arch/hexagon/lib/Makefile new file mode 100644 index 000000000000..874655e85671 --- /dev/null +++ b/arch/hexagon/lib/Makefile @@ -0,0 +1,4 @@ +# +# Makefile for hexagon-specific library files. +# +obj-y = checksum.o io.o memcpy.o memset.o diff --git a/arch/hexagon/mm/Makefile b/arch/hexagon/mm/Makefile new file mode 100644 index 000000000000..1a0be4d576e1 --- /dev/null +++ b/arch/hexagon/mm/Makefile @@ -0,0 +1,6 @@ +# +# Makefile for Hexagon memory management subsystem +# + +obj-y := init.o pgalloc.o ioremap.o uaccess.o vm_fault.o cache.o +obj-y += copy_to_user.o copy_from_user.o strnlen_user.o vm_tlb.o |