From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: 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 Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior 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 --- kernel/arch/arm/include/asm/kexec.h | 60 +++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 kernel/arch/arm/include/asm/kexec.h (limited to 'kernel/arch/arm/include/asm/kexec.h') diff --git a/kernel/arch/arm/include/asm/kexec.h b/kernel/arch/arm/include/asm/kexec.h new file mode 100644 index 000000000..c2b9b4bde --- /dev/null +++ b/kernel/arch/arm/include/asm/kexec.h @@ -0,0 +1,60 @@ +#ifndef _ARM_KEXEC_H +#define _ARM_KEXEC_H + +#ifdef CONFIG_KEXEC + +/* Maximum physical address we can use pages from */ +#define KEXEC_SOURCE_MEMORY_LIMIT (-1UL) +/* Maximum address we can reach in physical address mode */ +#define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL) +/* Maximum address we can use for the control code buffer */ +#define KEXEC_CONTROL_MEMORY_LIMIT (-1UL) + +#define KEXEC_CONTROL_PAGE_SIZE 4096 + +#define KEXEC_ARCH KEXEC_ARCH_ARM + +#define KEXEC_ARM_ATAGS_OFFSET 0x1000 +#define KEXEC_ARM_ZIMAGE_OFFSET 0x8000 + +#ifndef __ASSEMBLY__ + +/** + * crash_setup_regs() - save registers for the panic kernel + * @newregs: registers are saved here + * @oldregs: registers to be saved (may be %NULL) + * + * Function copies machine registers from @oldregs to @newregs. If @oldregs is + * %NULL then current registers are stored there. + */ +static inline void crash_setup_regs(struct pt_regs *newregs, + struct pt_regs *oldregs) +{ + if (oldregs) { + memcpy(newregs, oldregs, sizeof(*newregs)); + } else { + __asm__ __volatile__ ( + "stmia %[regs_base], {r0-r12}\n\t" + "mov %[_ARM_sp], sp\n\t" + "str lr, %[_ARM_lr]\n\t" + "adr %[_ARM_pc], 1f\n\t" + "mrs %[_ARM_cpsr], cpsr\n\t" + "1:" + : [_ARM_pc] "=r" (newregs->ARM_pc), + [_ARM_cpsr] "=r" (newregs->ARM_cpsr), + [_ARM_sp] "=r" (newregs->ARM_sp), + [_ARM_lr] "=o" (newregs->ARM_lr) + : [regs_base] "r" (&newregs->ARM_r0) + : "memory" + ); + } +} + +/* Function pointer to optional machine-specific reinitialization */ +extern void (*kexec_reinit)(void); + +#endif /* __ASSEMBLY__ */ + +#endif /* CONFIG_KEXEC */ + +#endif /* _ARM_KEXEC_H */ -- cgit 1.2.3-korg