diff options
author | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
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committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/score/include/asm/processor.h | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/score/include/asm/processor.h')
-rw-r--r-- | kernel/arch/score/include/asm/processor.h | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/kernel/arch/score/include/asm/processor.h b/kernel/arch/score/include/asm/processor.h new file mode 100644 index 000000000..851f44199 --- /dev/null +++ b/kernel/arch/score/include/asm/processor.h @@ -0,0 +1,105 @@ +#ifndef _ASM_SCORE_PROCESSOR_H +#define _ASM_SCORE_PROCESSOR_H + +#include <linux/cpumask.h> +#include <linux/threads.h> + +#include <asm/segment.h> + +struct task_struct; + +/* + * System setup and hardware flags.. + */ +extern void (*cpu_wait)(void); + +extern unsigned long thread_saved_pc(struct task_struct *tsk); +extern void start_thread(struct pt_regs *regs, + unsigned long pc, unsigned long sp); +extern unsigned long get_wchan(struct task_struct *p); + +/* + * Return current * instruction pointer ("program counter"). + */ +#define current_text_addr() ({ __label__ _l; _l: &&_l; }) + +#define cpu_relax() barrier() +#define cpu_relax_lowlatency() cpu_relax() +#define release_thread(thread) do {} while (0) + +/* + * User space process size: 2GB. This is hardcoded into a few places, + * so don't change it unless you know what you are doing. + */ +#define TASK_SIZE 0x7fff8000UL + +/* + * This decides where the kernel will search for a free chunk of vm + * space during mmap's. + */ +#define TASK_UNMAPPED_BASE ((TASK_SIZE / 3) & ~(PAGE_SIZE)) + +#ifdef __KERNEL__ +#define STACK_TOP TASK_SIZE +#define STACK_TOP_MAX TASK_SIZE +#endif + +/* + * If you change thread_struct remember to change the #defines below too! + */ +struct thread_struct { + unsigned long reg0, reg2, reg3; + unsigned long reg12, reg13, reg14, reg15, reg16; + unsigned long reg17, reg18, reg19, reg20, reg21; + + unsigned long cp0_psr; + unsigned long cp0_ema; /* Last user fault */ + unsigned long cp0_badvaddr; /* Last user fault */ + unsigned long cp0_baduaddr; /* Last kernel fault accessing USEG */ + unsigned long error_code; + unsigned long trap_no; + + unsigned long mflags; + unsigned long reg29; + + unsigned long single_step; + unsigned long ss_nextcnt; + + unsigned long insn1_type; + unsigned long addr1; + unsigned long insn1; + + unsigned long insn2_type; + unsigned long addr2; + unsigned long insn2; + + mm_segment_t current_ds; +}; + +#define INIT_THREAD { \ + .reg0 = 0, \ + .reg2 = 0, \ + .reg3 = 0, \ + .reg12 = 0, \ + .reg13 = 0, \ + .reg14 = 0, \ + .reg15 = 0, \ + .reg16 = 0, \ + .reg17 = 0, \ + .reg18 = 0, \ + .reg19 = 0, \ + .reg20 = 0, \ + .reg21 = 0, \ + .cp0_psr = 0, \ + .error_code = 0, \ + .trap_no = 0, \ +} + +#define kstk_tos(tsk) \ + ((unsigned long)task_stack_page(tsk) + THREAD_SIZE - 32) +#define task_pt_regs(tsk) ((struct pt_regs *)kstk_tos(tsk) - 1) + +#define KSTK_EIP(tsk) (task_pt_regs(tsk)->cp0_epc) +#define KSTK_ESP(tsk) (task_pt_regs(tsk)->regs[29]) + +#endif /* _ASM_SCORE_PROCESSOR_H */ |