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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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2874c5fd28
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
53 lines
1.1 KiB
ArmAsm
53 lines
1.1 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (C) 2012 Freescale Semiconductor, Inc.
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*/
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#include <linux/threads.h>
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#include <asm/epapr_hcalls.h>
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#include <asm/reg.h>
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#include <asm/page.h>
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#include <asm/cputable.h>
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#include <asm/thread_info.h>
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#include <asm/ppc_asm.h>
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#include <asm/asm-compat.h>
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#include <asm/asm-offsets.h>
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#include <asm/export.h>
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#ifndef CONFIG_PPC64
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/* epapr_ev_idle() was derived from e500_idle() */
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_GLOBAL(epapr_ev_idle)
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PPC_LL r4, TI_LOCAL_FLAGS(r2) /* set napping bit */
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ori r4, r4,_TLF_NAPPING /* so when we take an exception */
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PPC_STL r4, TI_LOCAL_FLAGS(r2) /* it will return to our caller */
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wrteei 1
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idle_loop:
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LOAD_REG_IMMEDIATE(r11, EV_HCALL_TOKEN(EV_IDLE))
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.global epapr_ev_idle_start
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epapr_ev_idle_start:
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li r3, -1
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nop
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nop
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nop
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/*
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* Guard against spurious wakeups from a hypervisor --
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* only interrupt will cause us to return to LR due to
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* _TLF_NAPPING.
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*/
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b idle_loop
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#endif
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/* Hypercall entry point. Will be patched with device tree instructions. */
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.global epapr_hypercall_start
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epapr_hypercall_start:
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li r3, -1
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nop
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nop
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nop
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blr
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EXPORT_SYMBOL(epapr_hypercall_start)
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