sw64: implement a new policy of power management

Sunway inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I5XTK7

--------------------------------

In the previous commit, we prefer to use efi runtime function hooks
as default power management ops, it may raise unexpected errors at
virtual machine application. So in this commit we make the legacy
power management module built in the kernel, which may be used by
some guest os kernel under some circumstances when running without
efi loader support.
Signed-off-by: NDai Xin <daixin@wxiat.com>
Reviewed-by: NHe Sheng <hesheng@wxiat.com>
Signed-off-by: NGu Zitao <guzitao@wxiat.com>

arch/sw_64/Kconfig

@@ -255,13 +255,6 @@ config PLATFORM_XUELANG
 
 endchoice
 
-config LEGACY_XUELANG
-        bool "Xuelang Reset Interface"
-        depends on SW64_CHIP3
-        help
-          This enables the legacy reset driver for SW64 chip3 CRBs. This interface
-          as a temporary solution will be deprecated in the future.
-
 config MIGHT_HAVE_PC_SERIO
 	bool "Use PC serio device i8042"
 	select ARCH_MIGHT_HAVE_PC_SERIO

arch/sw_64/include/asm/platform.h

@@ -15,6 +15,7 @@ struct sw64_platform_ops {
 extern struct sw64_platform_ops *sw64_platform;
 
 extern struct sw64_platform_ops xuelang_ops;
+extern struct boot_params *sunway_boot_params;
 
 extern void sw64_halt(void);
 extern void sw64_poweroff(void);

arch/sw_64/kernel/dup_print.c

@@ -3,7 +3,7 @@
 #include <linux/smp.h>
 #include <linux/spinlock.h>
 
-#include <asm/chip3_io.h>
+#include <asm/platform.h>
 #include <asm/io.h>
 
 #ifdef CONFIG_SW64_RRK

drivers/platform/sw64/Makefile

 # SPDX-License-Identifier: GPL-2.0
-obj-$(CONFIG_LEGACY_XUELANG)	+= legacy_xuelang.o
+obj-$(CONFIG_PLATFORM_XUELANG)	+= legacy_xuelang.o

drivers/platform/sw64/legacy_xuelang.c

@@ -51,9 +51,11 @@ void sw64_restart(void)
 
 static int sw64_reset_init(void)
 {
-	pm_restart = sw64_restart;
-	pm_power_off = sw64_poweroff;
-	pm_halt = sw64_halt;
+	if (!sunway_boot_params->efi_systab) {
+		pm_restart = sw64_restart;
+		pm_power_off = sw64_poweroff;
+		pm_halt = sw64_halt;
+	}
 
 	return 0;
 }