src/soc/intel/skylake/lpc.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <device/device.h>
   4 #include <device/pci.h>
   5 #include <pc80/isa-dma.h>
   6 #include <pc80/i8259.h>
   7 #include <arch/ioapic.h>
   8 #include <intelblocks/itss.h>
   9 #include <intelblocks/lpc_lib.h>
  10 #include <soc/iomap.h>
  11 #include <soc/pcr_ids.h>
  12 #include <soc/intel/common/block/lpc/lpc_def.h>
  13
  14 #include "chip.h"
  15
  16 void soc_get_gen_io_dec_range(uint32_t gen_io_dec[LPC_NUM_GENERIC_IO_RANGES])
  17 {
  18         const config_t *config = config_of_soc();
  19
  20         gen_io_dec[0] = config->gen1_dec;
  21         gen_io_dec[1] = config->gen2_dec;
  22         gen_io_dec[2] = config->gen3_dec;
  23         gen_io_dec[3] = config->gen4_dec;
  24 }
  25
  26 void lpc_soc_init(struct device *dev)
  27 {
  28         const config_t *const config = config_of(dev);
  29
  30         /* Legacy initialization */
  31         isa_dma_init();
  32         pch_misc_init();
  33
  34         /* Enable BIOS updates outside of SMM */
  35         pci_and_config8(PCH_DEV_LPC, 0xdc, ~(1 << 5));
  36
  37         /* Enable CLKRUN_EN for power gating LPC */
  38         lpc_enable_pci_clk_cntl();
  39
  40         /* Set LPC Serial IRQ mode */
  41         lpc_set_serirq_mode(config->serirq_mode);
  42
  43         /* Interrupt configuration */
  44         pch_enable_ioapic();
  45         pch_pirq_init();
  46         setup_i8259();
  47         i8259_configure_irq_trigger(9, 1);
  48 }