src/soc/intel/tigerlake/finalize.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 /*
   4  * This file is created based on Intel Tiger Lake Processor PCH Datasheet
   5  * Document number: 575857
   6  * Chapter number: 4, 29
   7  */
   8
   9 #include <bootstate.h>
  10 #include <commonlib/console/post_codes.h>
  11 #include <console/console.h>
  12 #include <cpu/x86/smm.h>
  13 #include <device/mmio.h>
  14 #include <device/pci.h>
  15 #include <intelblocks/cse.h>
  16 #include <intelblocks/lpc_lib.h>
  17 #include <intelblocks/pcr.h>
  18 #include <intelblocks/pmclib.h>
  19 #include <intelblocks/systemagent.h>
  20 #include <intelblocks/tco.h>
  21 #include <soc/p2sb.h>
  22 #include <soc/pci_devs.h>
  23 #include <soc/pcr_ids.h>
  24 #include <soc/pm.h>
  25 #include <soc/smbus.h>
  26 #include <soc/soc_chip.h>
  27 #include <soc/systemagent.h>
  28 #include <spi-generic.h>
  29
  30 static void pch_finalize(void)
  31 {
  32         /* TCO Lock down */
  33         tco_lockdown();
  34
  35         /* TODO: Add Thermal Configuration */
  36
  37         pmc_clear_pmcon_sts();
  38 }
  39
  40 static void tbt_finalize(void)
  41 {
  42         int i;
  43         const struct device *dev;
  44
  45         /* Disable Thunderbolt PCIe root ports bus master */
  46         for (i = 0; i < NUM_TBT_FUNCTIONS; i++) {
  47                 dev = pcidev_path_on_root(SA_DEVFN_TBT(i));
  48                 if (dev)
  49                         pci_dev_disable_bus_master(dev);
  50         }
  51 }
  52
  53 static void soc_finalize(void *unused)
  54 {
  55         printk(BIOS_DEBUG, "Finalizing chipset.\n");
  56
  57         pch_finalize();
  58         apm_control(APM_CNT_FINALIZE);
  59         tbt_finalize();
  60         if (CONFIG(DISABLE_HECI1_AT_PRE_BOOT))
  61                 heci1_disable();
  62
  63         /* Indicate finalize step with post code */
  64         post_code(POSTCODE_OS_BOOT);
  65 }
  66
  67 BOOT_STATE_INIT_ENTRY(BS_OS_RESUME, BS_ON_ENTRY, soc_finalize, NULL);
  68 BOOT_STATE_INIT_ENTRY(BS_PAYLOAD_LOAD, BS_ON_EXIT, soc_finalize, NULL);