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 <pc80/isa-dma.h>
  10 #include <pc80/i8259.h>
  11 #include <soc/espi.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
  18 void soc_get_gen_io_dec_range(uint32_t gen_io_dec[LPC_NUM_GENERIC_IO_RANGES])
  19 {
  20         const config_t *config = config_of_soc();
  21
  22         gen_io_dec[0] = config->gen1_dec;
  23         gen_io_dec[1] = config->gen2_dec;
  24         gen_io_dec[2] = config->gen3_dec;
  25         gen_io_dec[3] = config->gen4_dec;
  26 }
  27
  28 #if ENV_RAMSTAGE
  29 void lpc_soc_init(struct device *dev)
  30 {
  31         /* Legacy initialization */
  32         isa_dma_init();
  33         pch_misc_init();
  34
  35         /* Enable CLKRUN_EN for power gating ESPI */
  36         lpc_enable_pci_clk_cntl();
  37
  38         /* Set ESPI Serial IRQ mode */
  39         if (CONFIG(SERIRQ_CONTINUOUS_MODE))
  40                 lpc_set_serirq_mode(SERIRQ_CONTINUOUS);
  41         else
  42                 lpc_set_serirq_mode(SERIRQ_QUIET);
  43
  44         /* Interrupt configuration */
  45         pch_enable_ioapic();
  46         pch_pirq_init();
  47         setup_i8259();
  48         i8259_configure_irq_trigger(9, 1);
  49 }
  50
  51 #endif