diff options
Diffstat (limited to 'src/drivers/intel/ish')
| -rw-r--r-- | src/drivers/intel/ish/Kconfig | 5 | ||||
| -rw-r--r-- | src/drivers/intel/ish/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/drivers/intel/ish/chip.h | 22 | ||||
| -rw-r--r-- | src/drivers/intel/ish/ish.c | 81 |
4 files changed, 109 insertions, 0 deletions
diff --git a/src/drivers/intel/ish/Kconfig b/src/drivers/intel/ish/Kconfig new file mode 100644 index 0000000000..635864e143 --- /dev/null +++ b/src/drivers/intel/ish/Kconfig @@ -0,0 +1,5 @@ +config DRIVERS_INTEL_ISH + bool + help + When enabled, chip driver/intel/ish will publish information to the + SSDT _DSD table for the ISH device. diff --git a/src/drivers/intel/ish/Makefile.inc b/src/drivers/intel/ish/Makefile.inc new file mode 100644 index 0000000000..cab2b1d804 --- /dev/null +++ b/src/drivers/intel/ish/Makefile.inc @@ -0,0 +1 @@ +ramstage-$(CONFIG_DRIVERS_INTEL_ISH) += ish.c diff --git a/src/drivers/intel/ish/chip.h b/src/drivers/intel/ish/chip.h new file mode 100644 index 0000000000..ae3fb35b8d --- /dev/null +++ b/src/drivers/intel/ish/chip.h @@ -0,0 +1,22 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2019 Google LLC + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +/* + * Intel Integrated Sensor Hub (ISH) + */ +struct drivers_intel_ish_config { + /* Firmware name used by kernel for loading ISH firmware */ + const char *firmware_name; +}; diff --git a/src/drivers/intel/ish/ish.c b/src/drivers/intel/ish/ish.c new file mode 100644 index 0000000000..bc1b6fa3c3 --- /dev/null +++ b/src/drivers/intel/ish/ish.c @@ -0,0 +1,81 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2019 Google LLC + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <arch/acpi_device.h> +#include <arch/acpigen.h> +#include <console/console.h> +#include <device/pci.h> +#include <device/pci_ids.h> +#include "chip.h" + +static void ish_fill_ssdt_generator(struct device *dev) +{ + struct drivers_intel_ish_config *config = dev->chip_info; + struct device *root = dev->bus->dev; + struct acpi_dp *dsd; + + if (!dev->enabled || !config || !config->firmware_name) + return; + + acpigen_write_scope(acpi_device_path(root)); + + dsd = acpi_dp_new_table("_DSD"); + acpi_dp_add_string(dsd, "firmware-name", config->firmware_name); + acpi_dp_write(dsd); + + acpigen_pop_len(); /* Scope */ + + printk(BIOS_INFO, "%s: Set firmware-name: %s\n", + acpi_device_path(root), config->firmware_name); +} + +static struct device_operations intel_ish_ops = { + .read_resources = DEVICE_NOOP, + .set_resources = DEVICE_NOOP, + .enable_resources = DEVICE_NOOP, + .acpi_fill_ssdt_generator = ish_fill_ssdt_generator, +}; + +static void intel_ish_enable(struct device *dev) +{ + /* This dev is a generic device that is a child to the ISH PCI device */ + dev->ops = &intel_ish_ops; +} + +/* Copy of default_pci_ops_dev with scan_bus addition */ +static const struct device_operations pci_ish_device_ops = { + .read_resources = pci_dev_read_resources, + .set_resources = pci_dev_set_resources, + .enable_resources = pci_dev_enable_resources, + .init = pci_dev_init, + .scan_bus = &scan_generic_bus, /* Non-default */ + .ops_pci = &pci_dev_ops_pci, +}; + +static const unsigned short pci_device_ids[] = { + PCI_DEVICE_ID_INTEL_CNL_ISHB, + 0 +}; + +static const struct pci_driver ish_intel_driver __pci_driver = { + .ops = &pci_ish_device_ops, + .vendor = PCI_VENDOR_ID_INTEL, + .devices = pci_device_ids, +}; + +struct chip_operations drivers_intel_ish_ops = { + CHIP_NAME("Intel ISH Chip") + .enable_dev = intel_ish_enable, +}; |