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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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fbb82b0365
This provides a machine_ops-based reboot interface loosely cloned from x86, and converts the native sh32 and sh64 cases over to it. Necessary both for tying in SMP support and also enabling platforms like SDK7786 to add support for their microcontroller-based power managers. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
84 lines
2.2 KiB
C
84 lines
2.2 KiB
C
#ifndef __ASM_SH_SYSTEM_64_H
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#define __ASM_SH_SYSTEM_64_H
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/*
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* include/asm-sh/system_64.h
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*
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* Copyright (C) 2000, 2001 Paolo Alberelli
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* Copyright (C) 2003 Paul Mundt
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* Copyright (C) 2004 Richard Curnow
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#include <cpu/registers.h>
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#include <asm/processor.h>
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/*
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* switch_to() should switch tasks to task nr n, first
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*/
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struct task_struct *sh64_switch_to(struct task_struct *prev,
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struct thread_struct *prev_thread,
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struct task_struct *next,
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struct thread_struct *next_thread);
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#define switch_to(prev,next,last) \
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do { \
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if (last_task_used_math != next) { \
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struct pt_regs *regs = next->thread.uregs; \
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if (regs) regs->sr |= SR_FD; \
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} \
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last = sh64_switch_to(prev, &prev->thread, next, \
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&next->thread); \
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} while (0)
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#define __uses_jump_to_uncached
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#define jump_to_uncached() do { } while (0)
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#define back_to_cached() do { } while (0)
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#define __icbi(addr) __asm__ __volatile__ ( "icbi %0, 0\n\t" : : "r" (addr))
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#define __ocbp(addr) __asm__ __volatile__ ( "ocbp %0, 0\n\t" : : "r" (addr))
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#define __ocbi(addr) __asm__ __volatile__ ( "ocbi %0, 0\n\t" : : "r" (addr))
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#define __ocbwb(addr) __asm__ __volatile__ ( "ocbwb %0, 0\n\t" : : "r" (addr))
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static inline reg_size_t register_align(void *val)
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{
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return (unsigned long long)(signed long long)(signed long)val;
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}
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extern void phys_stext(void);
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static inline void trigger_address_error(void)
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{
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phys_stext();
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}
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#define SR_BL_LL 0x0000000010000000LL
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static inline void set_bl_bit(void)
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{
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unsigned long long __dummy0, __dummy1 = SR_BL_LL;
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__asm__ __volatile__("getcon " __SR ", %0\n\t"
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"or %0, %1, %0\n\t"
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"putcon %0, " __SR "\n\t"
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: "=&r" (__dummy0)
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: "r" (__dummy1));
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}
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static inline void clear_bl_bit(void)
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{
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unsigned long long __dummy0, __dummy1 = ~SR_BL_LL;
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__asm__ __volatile__("getcon " __SR ", %0\n\t"
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"and %0, %1, %0\n\t"
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"putcon %0, " __SR "\n\t"
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: "=&r" (__dummy0)
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: "r" (__dummy1));
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}
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#endif /* __ASM_SH_SYSTEM_64_H */
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