From 748e4f3d702def1a4bff191e0cf93b6a05340f01 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:41:34 +0000
Subject: [PATCH] add gpio led uart

---
 kernel/arch/powerpc/kernel/idle_6xx.S |   25 ++++++++++++++-----------
 1 files changed, 14 insertions(+), 11 deletions(-)

diff --git a/kernel/arch/powerpc/kernel/idle_6xx.S b/kernel/arch/powerpc/kernel/idle_6xx.S
index ff026c9..315e5e2 100644
--- a/kernel/arch/powerpc/kernel/idle_6xx.S
+++ b/kernel/arch/powerpc/kernel/idle_6xx.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 /*
  *  This file contains the power_save function for 6xx & 7xxx CPUs
  *  rewritten in assembler
@@ -6,11 +7,6 @@
  *  it will have PLL 1 set to low speed mode (used during NAP/DOZE).
  *  if this is not the case some additional changes will have to
  *  be done to check a runtime var (a bit like powersave-nap)
- *
- *  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.
  */
 
 #include <linux/threads.h>
@@ -133,13 +129,12 @@
 END_FTR_SECTION_IFCLR(CPU_FTR_NO_DPM)
 	mtspr	SPRN_HID0,r4
 BEGIN_FTR_SECTION
-	DSSALL
+	PPC_DSSALL
 	sync
 END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
-	CURRENT_THREAD_INFO(r9, r1)
-	lwz	r8,TI_LOCAL_FLAGS(r9)	/* set napping bit */
+	lwz	r8,TI_LOCAL_FLAGS(r2)	/* set napping bit */
 	ori	r8,r8,_TLF_NAPPING	/* so when we take an exception */
-	stw	r8,TI_LOCAL_FLAGS(r9)	/* it will return to our caller */
+	stw	r8,TI_LOCAL_FLAGS(r2)	/* it will return to our caller */
 	mfmsr	r7
 	ori	r7,r7,MSR_EE
 	oris	r7,r7,MSR_POW@h
@@ -159,8 +154,7 @@
 	stw	r9,_NIP(r11)		/* make it do a blr */
 
 #ifdef CONFIG_SMP
-	CURRENT_THREAD_INFO(r12, r11)
-	lwz	r11,TI_CPU(r12)		/* get cpu number * 4 */
+	lwz	r11,TASK_CPU(r2)	/* get cpu number * 4 */
 	slwi	r11,r11,2
 #else
 	li	r11,0
@@ -172,7 +166,11 @@
 	mfspr	r9,SPRN_HID0
 	andis.	r9,r9,HID0_NAP@h
 	beq	1f
+#ifdef CONFIG_VMAP_STACK
+	addis	r9, r11, nap_save_msscr0@ha
+#else
 	addis	r9,r11,(nap_save_msscr0-KERNELBASE)@ha
+#endif
 	lwz	r9,nap_save_msscr0@l(r9)
 	mtspr	SPRN_MSSCR0, r9
 	sync
@@ -180,11 +178,16 @@
 1:
 END_FTR_SECTION_IFSET(CPU_FTR_NAP_DISABLE_L2_PR)
 BEGIN_FTR_SECTION
+#ifdef CONFIG_VMAP_STACK
+	addis	r9, r11, nap_save_hid1@ha
+#else
 	addis	r9,r11,(nap_save_hid1-KERNELBASE)@ha
+#endif
 	lwz	r9,nap_save_hid1@l(r9)
 	mtspr	SPRN_HID1, r9
 END_FTR_SECTION_IFSET(CPU_FTR_DUAL_PLL_750FX)
 	b	transfer_to_handler_cont
+_ASM_NOKPROBE_SYMBOL(power_save_ppc32_restore)
 
 	.data
 

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