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Diffstat (limited to 'include/asm-avr32/processor.h')
| -rw-r--r-- | include/asm-avr32/processor.h | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/include/asm-avr32/processor.h b/include/asm-avr32/processor.h new file mode 100644 index 0000000..cc59dfa --- /dev/null +++ b/include/asm-avr32/processor.h @@ -0,0 +1,97 @@ +/* + * Copyright (C) 2006 Atmel Corporation + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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. + * + * 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., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ +#ifndef __ASM_AVR32_PROCESSOR_H +#define __ASM_AVR32_PROCESSOR_H + +#ifndef __ASSEMBLY__ + +#define current_text_addr() ({ void *pc; __asm__("mov %0,pc" : "=r"(pc)); pc; }) + +struct avr32_cpuinfo { + unsigned long loops_per_jiffy; +}; + +extern struct avr32_cpuinfo boot_cpu_data; + +#ifdef CONFIG_SMP +extern struct avr32_cpuinfo cpu_data[]; +#define current_cpu_data cpu_data[smp_processor_id()] +#else +#define cpu_data (&boot_cpu_data) +#define current_cpu_data boot_cpu_data +#endif + +/* TODO: Make configurable (2GB will serve as a reasonable default) */ +#define TASK_SIZE 0x80000000 + +/* This decides where the kernel will search for a free chunk of vm + * space during mmap's + */ +#define TASK_UNMAPPED_BASE (TASK_SIZE / 3) + +#define cpu_relax() barrier() +#define cpu_sync_pipeline() asm volatile("sub pc, -2" : : : "memory") + +/* This struct contains the CPU context as stored by switch_to() */ +struct thread_struct { + unsigned long pc; + unsigned long ksp; /* Kernel stack pointer */ + unsigned long r7; + unsigned long r6; + unsigned long r5; + unsigned long r4; + unsigned long r3; + unsigned long r2; + unsigned long r1; + unsigned long r0; +}; + +#define INIT_THREAD { \ + .ksp = sizeof(init_stack) + (long)&init_stack, \ +} + +/* + * Do necessary setup to start up a newly executed thread. + */ +#define start_thread(regs, new_pc, new_sp) \ + set_fs(USER_DS); \ + regs->sr = 0; /* User mode. */ \ + regs->gr[REG_PC] = new_pc; \ + regs->gr[REG_SP] = new_sp + +struct task_struct; + +/* Free all resources held by a thread */ +extern void release_thread(struct task_struct *); + +/* Create a kernel thread without removing it from tasklists */ +extern int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags); + +/* Prepare to copy thread state - unlazy all lazy status */ +#define prepare_to_copy(tsk) do { } while(0) + +/* Return saved PC of a blocked thread */ +#define thread_saved_pc(tsk) (tsk->thread.pc) + +#endif /* __ASSEMBLY__ */ + +#endif /* __ASM_AVR32_PROCESSOR_H */ |