src/soc/intel/xeon_sp/lockdown.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <intelblocks/cfg.h>
   4 #include <intelblocks/lpc_lib.h>
   5 #include <intelpch/lockdown.h>
   6 #include <soc/lockdown.h>
   7 #include <soc/pm.h>
   8
   9 static void lpc_lockdown_config(void)
  10 {
  11         /* Set BIOS Interface Lock, BIOS Lock */
  12         lpc_set_bios_interface_lock_down();
  13
  14         /* Only allow writes in SMM */
  15         if (CONFIG(BOOTMEDIA_SMM_BWP)) {
  16                 lpc_set_eiss();
  17                 lpc_enable_wp();
  18         }
  19         lpc_set_lock_enable();
  20 }
  21
  22 void soc_lockdown_config(int chipset_lockdown)
  23 {
  24         if (chipset_lockdown == CHIPSET_LOCKDOWN_FSP)
  25                 return;
  26
  27         lpc_lockdown_config();
  28         pmc_lockdown_config();
  29         sata_lockdown_config(chipset_lockdown);
  30         spi_lockdown_config(chipset_lockdown);
  31 }