src/soc/intel/elkhartlake/systemagent.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <delay.h>
   4 #include <device/device.h>
   5 #include <device/pci.h>
   6 #include <device/pci_ops.h>
   7 #include <intelblocks/power_limit.h>
   8 #include <intelblocks/systemagent.h>
   9 #include <soc/iomap.h>
  10 #include <soc/soc_chip.h>
  11 #include <soc/systemagent.h>
  12
  13 /*
  14  * SoC implementation
  15  *
  16  * Add all known fixed memory ranges for Host Controller/Memory
  17  * controller.
  18  */
  19 void soc_add_fixed_mmio_resources(struct device *dev, int *index)
  20 {
  21         static const struct sa_mmio_descriptor soc_fixed_resources[] = {
  22                 { PCIEXBAR, CONFIG_ECAM_MMCONF_BASE_ADDRESS, CONFIG_ECAM_MMCONF_LENGTH,
  23                                 "PCIEXBAR" },
  24                 { MCHBAR, MCH_BASE_ADDRESS, MCH_BASE_SIZE, "MCHBAR" },
  25                 { DMIBAR, DMI_BASE_ADDRESS, DMI_BASE_SIZE, "DMIBAR" },
  26                 { EPBAR, EP_BASE_ADDRESS, EP_BASE_SIZE, "EPBAR" },
  27                 { REGBAR, REG_BASE_ADDRESS, REG_BASE_SIZE, "REGBAR" },
  28                 { EDRAMBAR, EDRAM_BASE_ADDRESS, EDRAM_BASE_SIZE, "EDRAMBAR" },
  29         };
  30
  31         sa_add_fixed_mmio_resources(dev, index, soc_fixed_resources,
  32                         ARRAY_SIZE(soc_fixed_resources));
  33
  34         /* Add Vt-d resources if VT-d is enabled */
  35         if ((pci_read_config32(dev, CAPID0_A) & VTD_DISABLE))
  36                 return;
  37
  38         sa_add_fixed_mmio_resources(dev, index, soc_vtd_resources,
  39                         ARRAY_SIZE(soc_vtd_resources));
  40 }
  41
  42 /*
  43  * SoC implementation
  44  *
  45  * Perform System Agent Initialization during Ramstage phase.
  46  */
  47 void soc_systemagent_init(struct device *dev)
  48 {
  49         struct soc_power_limits_config *soc_config;
  50         config_t *config;
  51
  52         /* Enable Power Aware Interrupt Routing */
  53         enable_power_aware_intr();
  54
  55         /* Enable BIOS Reset CPL */
  56         enable_bios_reset_cpl();
  57
  58         mdelay(1);
  59
  60         config = config_of_soc();
  61         soc_config = &config->power_limits_config;
  62         set_power_limits(MOBILE_SKU_PL1_TIME_SEC, soc_config);
  63 }