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72 lines
2.6 KiB
72 lines
2.6 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef __ASM_SH_KEXEC_H |
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#define __ASM_SH_KEXEC_H |
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#include <asm/ptrace.h> |
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#include <asm/string.h> |
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#include <linux/kernel.h> |
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/* |
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* KEXEC_SOURCE_MEMORY_LIMIT maximum page get_free_page can return. |
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* I.e. Maximum page that is mapped directly into kernel memory, |
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* and kmap is not required. |
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* |
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* Someone correct me if FIXADDR_START - PAGEOFFSET is not the correct |
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* calculation for the amount of memory directly mappable into the |
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* kernel memory space. |
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*/ |
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/* Maximum physical address we can use pages from */ |
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#define KEXEC_SOURCE_MEMORY_LIMIT (-1UL) |
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/* Maximum address we can reach in physical address mode */ |
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#define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL) |
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/* Maximum address we can use for the control code buffer */ |
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#define KEXEC_CONTROL_MEMORY_LIMIT TASK_SIZE |
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#define KEXEC_CONTROL_PAGE_SIZE 4096 |
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/* The native architecture */ |
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#define KEXEC_ARCH KEXEC_ARCH_SH |
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#ifdef CONFIG_KEXEC |
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/* arch/sh/kernel/machine_kexec.c */ |
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void reserve_crashkernel(void); |
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static inline void crash_setup_regs(struct pt_regs *newregs, |
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struct pt_regs *oldregs) |
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{ |
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if (oldregs) |
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memcpy(newregs, oldregs, sizeof(*newregs)); |
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else { |
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__asm__ __volatile__ ("mov r0, %0" : "=r" (newregs->regs[0])); |
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__asm__ __volatile__ ("mov r1, %0" : "=r" (newregs->regs[1])); |
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__asm__ __volatile__ ("mov r2, %0" : "=r" (newregs->regs[2])); |
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__asm__ __volatile__ ("mov r3, %0" : "=r" (newregs->regs[3])); |
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__asm__ __volatile__ ("mov r4, %0" : "=r" (newregs->regs[4])); |
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__asm__ __volatile__ ("mov r5, %0" : "=r" (newregs->regs[5])); |
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__asm__ __volatile__ ("mov r6, %0" : "=r" (newregs->regs[6])); |
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__asm__ __volatile__ ("mov r7, %0" : "=r" (newregs->regs[7])); |
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__asm__ __volatile__ ("mov r8, %0" : "=r" (newregs->regs[8])); |
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__asm__ __volatile__ ("mov r9, %0" : "=r" (newregs->regs[9])); |
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__asm__ __volatile__ ("mov r10, %0" : "=r" (newregs->regs[10])); |
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__asm__ __volatile__ ("mov r11, %0" : "=r" (newregs->regs[11])); |
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__asm__ __volatile__ ("mov r12, %0" : "=r" (newregs->regs[12])); |
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__asm__ __volatile__ ("mov r13, %0" : "=r" (newregs->regs[13])); |
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__asm__ __volatile__ ("mov r14, %0" : "=r" (newregs->regs[14])); |
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__asm__ __volatile__ ("mov r15, %0" : "=r" (newregs->regs[15])); |
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__asm__ __volatile__ ("sts pr, %0" : "=r" (newregs->pr)); |
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__asm__ __volatile__ ("sts macl, %0" : "=r" (newregs->macl)); |
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__asm__ __volatile__ ("sts mach, %0" : "=r" (newregs->mach)); |
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__asm__ __volatile__ ("stc gbr, %0" : "=r" (newregs->gbr)); |
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__asm__ __volatile__ ("stc sr, %0" : "=r" (newregs->sr)); |
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newregs->pc = _THIS_IP_; |
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} |
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} |
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#else |
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static inline void reserve_crashkernel(void) { } |
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#endif /* CONFIG_KEXEC */ |
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#endif /* __ASM_SH_KEXEC_H */
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