/*
* Snapshot kernel memory and reset the system.
*
* swsusp_save() is executed in the suspend finisher so that the CPU
* context pointer and memory are part of the saved image, which is
* required by the resume kernel image to restart execution from
* swsusp_arch_suspend().
*
* soft_restart is not technically needed, but is used to get success
* returned from cpu_suspend.
*
* When soft reboot completes, the hibernation snapshot is written out.
*/
static int notrace arch_save_image(unsigned long unused)
{
int ret;
ret = swsusp_save();
if (ret == 0)
_soft_restart(virt_to_phys(cpu_resume), false);
return ret;
}
/*
* Restore page contents for physical pages that were in use during loading
* hibernation image. Switch to idmap_pgd so the physical page tables
* are overwritten with the same contents.
*/
static void notrace arch_restore_image(void *unused)
{
struct pbe *pbe;
cpu_switch_mm(idmap_pgd, &init_mm);
for (pbe = restore_pblist; pbe; pbe = pbe->next)
copy_page(pbe->orig_address, pbe->address);
_soft_restart(virt_to_phys(cpu_resume), false);
}
/*
* Snapshot kernel memory and reset the system.
*
* swsusp_save() is executed in the suspend finisher so that the CPU
* context pointer and memory are part of the saved image, which is
* required by the resume kernel image to restart execution from
* swsusp_arch_suspend().
*
* soft_restart is not technically needed, but is used to get success
* returned from cpu_suspend.
*
* When soft reboot completes, the hibernation snapshot is written out.
*/
static int notrace arch_save_image(unsigned long unused)
{
int ret;
ret = swsusp_save();
#ifdef CONFIG_MTK_HIBERNATION
swsusp_saved = (ret == 0) ? 1 : 0;
#else
if (ret == 0)
_soft_restart(virt_to_phys(cpu_resume), false);
#endif
return ret;
}
/*
* Restore page contents for physical pages that were in use during loading
* hibernation image. Switch to idmap_pgd so the physical page tables
* are overwritten with the same contents.
*/
static void notrace arch_restore_image(void *unused)
{
#ifdef CONFIG_MTK_HIBERNATION
mtk_arch_restore_image();
#else
struct pbe *pbe;
cpu_switch_mm(idmap_pgd, &init_mm);
for (pbe = restore_pblist; pbe; pbe = pbe->next)
copy_page(pbe->orig_address, pbe->address);
_soft_restart(virt_to_phys(cpu_resume), false);
#endif
}
void soft_restart(unsigned long addr)
{
_soft_restart(addr, num_online_cpus() == 1);
}
