src/soc/intel/elkhartlake/espi.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <arch/ioapic.h>
   4 #include <device/device.h>
   5 #include <device/pci.h>
   6 #include <device/pci_ops.h>
   7 #include <intelblocks/itss.h>
   8 #include <intelblocks/lpc_lib.h>
   9 #include <intelpch/espi.h>
  10 #include <pc80/isa-dma.h>
  11 #include <pc80/i8259.h>
  12 #include <soc/iomap.h>
  13 #include <soc/irq.h>
  14 #include <soc/pci_devs.h>
  15 #include <soc/pcr_ids.h>
  16 #include <soc/soc_chip.h>
  17 #include <static.h>
  18
  19 void soc_get_gen_io_dec_range(uint32_t gen_io_dec[LPC_NUM_GENERIC_IO_RANGES])
  20 {
  21         const config_t *config = config_of_soc();
  22
  23         gen_io_dec[0] = config->gen1_dec;
  24         gen_io_dec[1] = config->gen2_dec;
  25         gen_io_dec[2] = config->gen3_dec;
  26         gen_io_dec[3] = config->gen4_dec;
  27 }
  28
  29 #if ENV_RAMSTAGE
  30 void lpc_soc_init(struct device *dev)
  31 {
  32         /* Legacy initialization */
  33         isa_dma_init();
  34         pch_misc_init();
  35
  36         /* Enable CLKRUN_EN for power gating ESPI */
  37         lpc_enable_pci_clk_cntl();
  38
  39         /* Set ESPI Serial IRQ mode */
  40         if (CONFIG(SERIRQ_CONTINUOUS_MODE))
  41                 lpc_set_serirq_mode(SERIRQ_CONTINUOUS);
  42         else
  43                 lpc_set_serirq_mode(SERIRQ_QUIET);
  44
  45         /* Interrupt configuration */
  46         pch_enable_ioapic();
  47         pch_pirq_init();
  48         setup_i8259();
  49         i8259_configure_irq_trigger(9, 1);
  50 }
  51
  52 #endif