cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

ti81xx-restart.c (848B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2#include <linux/kernel.h>
      3#include <linux/init.h>
      4#include <linux/reboot.h>
      5
      6#include "iomap.h"
      7#include "common.h"
      8#include "control.h"
      9#include "prm3xxx.h"
     10
     11#define TI81XX_PRM_DEVICE_RSTCTRL	0x00a0
     12#define TI81XX_GLOBAL_RST_COLD		BIT(1)
     13
     14/**
     15 * ti81xx_restart - trigger a software restart of the SoC
     16 * @mode: the "reboot mode", see arch/arm/kernel/{setup,process}.c
     17 * @cmd: passed from the userspace program rebooting the system (if provided)
     18 *
     19 * Resets the SoC.  For @cmd, see the 'reboot' syscall in
     20 * kernel/sys.c.  No return value.
     21 *
     22 * NOTE: Warm reset does not seem to work, may require resetting
     23 * clocks to bypass mode.
     24 */
     25void ti81xx_restart(enum reboot_mode mode, const char *cmd)
     26{
     27	omap2_prm_set_mod_reg_bits(TI81XX_GLOBAL_RST_COLD, 0,
     28				   TI81XX_PRM_DEVICE_RSTCTRL);
     29	while (1);
     30}