int __noinstrument kfi_read_proc(char *buf, char **start, off_t fpos,
int length, int *eof, void *data)
{
int len = kfi_dump_log(buf);
if (fpos >= len) {
*start = buf;
*eof = 1;
return 0;
}
*start = buf + fpos;
if ((len -= fpos) > length)
return length;
*eof = 1;
return len;
}
/*
* Reboot system call: for obvious reasons only root may call it,
* and even root needs to set up some magic numbers in the registers
* so that some mistake won't make this reboot the whole machine.
* You can also set the meaning of the ctrl-alt-del-key here.
*
* reboot doesn't sync: do that yourself before calling this.
*/
asmlinkage long sys_reboot(int magic1, int magic2, unsigned int cmd, void * arg)
{
char buffer[256];
/* We only trust the superuser with rebooting the system. */
if (!capable(CAP_SYS_BOOT))
return -EPERM;
/* For safety, we require "magic" arguments. */
if (magic1 != LINUX_REBOOT_MAGIC1 ||
(magic2 != LINUX_REBOOT_MAGIC2 && magic2 != LINUX_REBOOT_MAGIC2A &&
magic2 != LINUX_REBOOT_MAGIC2B))
return -EINVAL;
#ifdef CONFIG_ARCH_EZXBASE
/* must be sync with include/linux/moto_accy.h */
#define ACCS_REBOOT (1 << MOTO_ACCY_TYPE_CHARGER_MID | \
1 << MOTO_ACCY_TYPE_CHARGER_MID_MPX | \
1 << MOTO_ACCY_TYPE_CHARGER_FAST | \
1 << MOTO_ACCY_TYPE_CHARGER_FAST_MPX | \
1 << MOTO_ACCY_TYPE_CHARGER_FAST_3G | \
1 << MOTO_ACCY_TYPE_CARKIT_MID | \
1 << MOTO_ACCY_TYPE_CARKIT_FAST | \
1 << MOTO_ACCY_TYPE_CARKIT_SMART)
#define FACTORY_REBOOT (1 << MOTO_ACCY_TYPE_CABLE_FACTORY)
MOTO_ACCY_MASK_T mask = (MOTO_ACCY_MASK_T)moto_accy_get_all_devices();
if (LINUX_REBOOT_CMD_RESTART == cmd) {
if (mask & FACTORY_REBOOT) {
*(unsigned long *)(phys_to_virt(FLAG_ADDR)) = FACTORY_REBOOT_FLAG;
} else {
*(unsigned long *)(phys_to_virt(FLAG_ADDR)) = APP_REBOOT_FLAG;
}
}
if (LINUX_REBOOT_CMD_POWER_OFF == cmd) {
if (mask & ACCS_REBOOT) {
*(unsigned long *)(phys_to_virt(FLAG_ADDR)) = CHARGE_FLAG;
cmd = LINUX_REBOOT_CMD_RESTART;
printk(KERN_EMERG "Change to reboot mode.\n");
}
}
#endif
lock_kernel();
switch (cmd) {
case LINUX_REBOOT_CMD_RESTART:
notifier_call_chain(&reboot_notifier_list, SYS_RESTART, NULL);
#ifdef CONFIG_KFI
kfi_dump_log(NULL);
#endif
printk(KERN_EMERG "Restarting system.\n");
machine_restart(NULL);
break;
case LINUX_REBOOT_CMD_CAD_ON:
C_A_D = 1;
break;
case LINUX_REBOOT_CMD_CAD_OFF:
C_A_D = 0;
break;
case LINUX_REBOOT_CMD_HALT:
notifier_call_chain(&reboot_notifier_list, SYS_HALT, NULL);
#ifdef CONFIG_KFI
kfi_dump_log(NULL);
#endif
printk(KERN_EMERG "System halted.\n");
machine_halt();
do_exit(0);
break;
case LINUX_REBOOT_CMD_POWER_OFF:
notifier_call_chain(&reboot_notifier_list, SYS_POWER_OFF, NULL);
#ifdef CONFIG_KFI
kfi_dump_log(NULL);
#endif
printk(KERN_EMERG "Power down.\n");
machine_power_off();
do_exit(0);
break;
case LINUX_REBOOT_CMD_RESTART2:
if (strncpy_from_user(&buffer[0], (char *)arg, sizeof(buffer) - 1) < 0) {
unlock_kernel();
return -EFAULT;
}
buffer[sizeof(buffer) - 1] = '\0';
notifier_call_chain(&reboot_notifier_list, SYS_RESTART, buffer);
printk(KERN_EMERG "Restarting system with command '%s'.\n", buffer);
#ifdef CONFIG_KFI
kfi_dump_log(NULL);
#endif
machine_restart(buffer);
break;
default:
unlock_kernel();
return -EINVAL;
}
unlock_kernel();
return 0;
}
/*
* Reboot system call: for obvious reasons only root may call it,
* and even root needs to set up some magic numbers in the registers
* so that some mistake won't make this reboot the whole machine.
* You can also set the meaning of the ctrl-alt-del-key here.
*
* reboot doesn't sync: do that yourself before calling this.
*/
asmlinkage long sys_reboot(int magic1, int magic2, unsigned int cmd, void * arg)
{
char buffer[256];
/* We only trust the superuser with rebooting the system. */
if (!capable(CAP_SYS_BOOT))
return -EPERM;
/* For safety, we require "magic" arguments. */
if (magic1 != LINUX_REBOOT_MAGIC1 ||
(magic2 != LINUX_REBOOT_MAGIC2 && magic2 != LINUX_REBOOT_MAGIC2A &&
magic2 != LINUX_REBOOT_MAGIC2B))
return -EINVAL;
lock_kernel();
switch (cmd) {
case LINUX_REBOOT_CMD_RESTART:
notifier_call_chain(&reboot_notifier_list, SYS_RESTART, NULL);
#ifdef CONFIG_KFI
kfi_dump_log(NULL);
#endif
printk(KERN_EMERG "Restarting system.\n");
machine_restart(NULL);
break;
case LINUX_REBOOT_CMD_CAD_ON:
C_A_D = 1;
break;
case LINUX_REBOOT_CMD_CAD_OFF:
C_A_D = 0;
break;
case LINUX_REBOOT_CMD_HALT:
notifier_call_chain(&reboot_notifier_list, SYS_HALT, NULL);
#ifdef CONFIG_KFI
kfi_dump_log(NULL);
#endif
printk(KERN_EMERG "System halted.\n");
machine_halt();
do_exit(0);
break;
case LINUX_REBOOT_CMD_POWER_OFF:
notifier_call_chain(&reboot_notifier_list, SYS_POWER_OFF, NULL);
#ifdef CONFIG_KFI
kfi_dump_log(NULL);
#endif
printk(KERN_EMERG "Power down.\n");
machine_power_off();
do_exit(0);
break;
case LINUX_REBOOT_CMD_RESTART2:
if (strncpy_from_user(&buffer[0], (char *)arg, sizeof(buffer) - 1) < 0) {
unlock_kernel();
return -EFAULT;
}
buffer[sizeof(buffer) - 1] = '\0';
notifier_call_chain(&reboot_notifier_list, SYS_RESTART, buffer);
printk(KERN_EMERG "Restarting system with command '%s'.\n", buffer);
#ifdef CONFIG_KFI
kfi_dump_log(NULL);
#endif
machine_restart(buffer);
break;
default:
unlock_kernel();
return -EINVAL;
}
unlock_kernel();
return 0;
}
