71 lines
2.5 KiB
C
71 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_SW64_KEXEC_H
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#define _ASM_SW64_KEXEC_H
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#ifdef CONFIG_KEXEC
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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 (-1UL)
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#define KEXEC_CONTROL_PAGE_SIZE 8192
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#define KEXEC_ARCH KEXEC_ARCH_SW64
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#define KEXEC_SW64_ATAGS_OFFSET 0x1000
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#define KEXEC_SW64_ZIMAGE_OFFSET 0x8000
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#ifndef __ASSEMBLY__
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/**
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* crash_setup_regs() - save registers for the panic kernel
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* @newregs: registers are saved here
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* @oldregs: registers to be saved (may be %NULL)
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*
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* Function copies machine registers from @oldregs to @newregs. If @oldregs is
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* %NULL then current registers are stored there.
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*/
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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__ ("stl $0, %0" : "=m" (newregs->r0));
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__asm__ __volatile__ ("stl $1, %0" : "=m" (newregs->r1));
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__asm__ __volatile__ ("stl $2, %0" : "=m" (newregs->r2));
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__asm__ __volatile__ ("stl $3, %0" : "=m" (newregs->r3));
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__asm__ __volatile__ ("stl $4, %0" : "=m" (newregs->r4));
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__asm__ __volatile__ ("stl $5, %0" : "=m" (newregs->r5));
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__asm__ __volatile__ ("stl $6, %0" : "=m" (newregs->r6));
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__asm__ __volatile__ ("stl $7, %0" : "=m" (newregs->r7));
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__asm__ __volatile__ ("stl $8, %0" : "=m" (newregs->r8));
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__asm__ __volatile__ ("stl $19, %0" : "=m" (newregs->r19));
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__asm__ __volatile__ ("stl $20, %0" : "=m" (newregs->r20));
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__asm__ __volatile__ ("stl $21, %0" : "=m" (newregs->r21));
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__asm__ __volatile__ ("stl $22, %0" : "=m" (newregs->r22));
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__asm__ __volatile__ ("stl $23, %0" : "=m" (newregs->r23));
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__asm__ __volatile__ ("stl $24, %0" : "=m" (newregs->r24));
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__asm__ __volatile__ ("stl $25, %0" : "=m" (newregs->r25));
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__asm__ __volatile__ ("stl $26, %0" : "=m" (newregs->r26));
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__asm__ __volatile__ ("stl $27, %0" : "=m" (newregs->r27));
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__asm__ __volatile__ ("stl $28, %0" : "=m" (newregs->r28));
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newregs->pc = (unsigned long)current_text_addr();
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}
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}
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/* Function pointer to optional machine-specific reinitialization */
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extern void (*kexec_reinit)(void);
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#endif /* __ASSEMBLY__ */
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struct kimage;
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extern unsigned long kexec_args[4];
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#endif /* CONFIG_KEXEC */
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#endif /* _ASM_SW64_KEXEC_H */
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