ARM: rockchip: rk3228: implement function rk3228_restart

[firefly-linux-kernel-4.4.55.git] / arch / arm / kernel / machine_kexec.c

diff --git a/arch/arm/kernel/machine_kexec.c b/arch/arm/kernel/machine_kexec.c
index 163b160c69e90c4d343b18d8cd7b30726c011a1f..70ae735dec53fe51b019a18d465b483f794f272c 100644 (file)
--- a/arch/arm/kernel/machine_kexec.c
+++ b/arch/arm/kernel/machine_kexec.c
@@ -14,10 +14,11 @@
 #include <asm/pgalloc.h>
 #include <asm/mmu_context.h>
 #include <asm/cacheflush.h>
+#include <asm/fncpy.h>
 #include <asm/mach-types.h>
 #include <asm/system_misc.h>
 
-extern const unsigned char relocate_new_kernel[];
+extern void relocate_new_kernel(void);
 extern const unsigned int relocate_new_kernel_size;
 
 extern unsigned long kexec_start_address;
@@ -133,6 +134,8 @@ void machine_kexec(struct kimage *image)
 {
        unsigned long page_list;
        unsigned long reboot_code_buffer_phys;
+       unsigned long reboot_entry = (unsigned long)relocate_new_kernel;
+       unsigned long reboot_entry_phys;
        void *reboot_code_buffer;
 
        if (num_online_cpus() > 1) {
@@ -156,16 +159,23 @@ void machine_kexec(struct kimage *image)
 
 
        /* copy our kernel relocation code to the control code page */
-       memcpy(reboot_code_buffer,
-              relocate_new_kernel, relocate_new_kernel_size);
+       reboot_entry = fncpy(reboot_code_buffer,
+                            reboot_entry,
+                            relocate_new_kernel_size);
+       reboot_entry_phys = (unsigned long)reboot_entry +
+               (reboot_code_buffer_phys - (unsigned long)reboot_code_buffer);
 
-
-       flush_icache_range((unsigned long) reboot_code_buffer,
-                          (unsigned long) reboot_code_buffer + KEXEC_CONTROL_PAGE_SIZE);
        printk(KERN_INFO "Bye!\n");
 
        if (kexec_reinit)
                kexec_reinit();
 
-       soft_restart(reboot_code_buffer_phys);
+       soft_restart(reboot_entry_phys);
+}
+
+void arch_crash_save_vmcoreinfo(void)
+{
+#ifdef CONFIG_ARM_LPAE
+       VMCOREINFO_CONFIG(ARM_LPAE);
+#endif
 }