src/soc/intel/denverton_ns/pmc.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <acpi/acpi.h>
   4 #include <device/pci_ops.h>
   5 #include <console/console.h>
   6 #include <cpu/x86/smm.h>
   7 #include <device/device.h>
   8 #include <device/mmio.h>
   9 #include <device/pci.h>
  10 #include <device/pci_ids.h>
  11 #include <intelblocks/pmc.h>
  12 #include <soc/iomap.h>
  13 #include <soc/pm.h>
  14 #include <soc/pmc.h>
  15 #include <soc/pci_devs.h>
  16 #include <soc/ramstage.h>
  17
  18 static void pch_power_options(struct device *dev) { /* TODO */ }
  19
  20 /* Fill up PMC resource structure */
  21 int pmc_soc_get_resources(struct pmc_resource_config *cfg)
  22 {
  23         cfg->pwrmbase_offset = PMC_PWRM_BASE;
  24         cfg->pwrmbase_addr = DEFAULT_PWRM_BASE;
  25         cfg->pwrmbase_size = DEFAULT_PWRM_SIZE;
  26         cfg->abase_offset = PMC_ACPI_BASE;
  27         cfg->abase_addr = DEFAULT_PMBASE;
  28         cfg->abase_size = DEFAULT_PMBASE_SIZE;
  29
  30         return 0;
  31 }
  32
  33 static void pch_set_acpi_mode(void)
  34 {
  35         if (!acpi_is_wakeup_s3()) {
  36                 apm_control(APM_CNT_ACPI_DISABLE);
  37         }
  38 }
  39
  40 void pmc_soc_init(struct device *dev)
  41 {
  42         uint32_t pwrm_base = pci_read_config32(dev, PMC_PWRM_BASE) & MASK_PMC_PWRM_BASE;
  43
  44         printk(BIOS_DEBUG, "pch: %s\n", __func__);
  45
  46         /* Set the value for PCI command register. */
  47         pci_write_config16(dev, PCI_COMMAND, PCI_COMMAND_MASTER |
  48                                                      PCI_COMMAND_MEMORY |
  49                                                      PCI_COMMAND_IO);
  50
  51         /* Setup power options. */
  52         pch_power_options(dev);
  53
  54         /* Configure ACPI mode. */
  55         pch_set_acpi_mode();
  56
  57         /*
  58          * Disable ACPI PM timer based on Kconfig
  59          *
  60          * Disabling ACPI PM timer is necessary for XTAL OSC shutdown.
  61          * Disabling ACPI PM timer also switches off TCO.
  62          */
  63         if (!CONFIG(USE_PM_ACPI_TIMER))
  64                 setbits8((volatile void *)(uintptr_t)(pwrm_base + PCH_PWRM_ACPI_TMR_CTL),
  65                          ACPI_TIM_DIS);
  66 }