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path: root/src/include/device/device.h
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2022-06-22device/resource: Add _kb postfix for resource allocatorsKyösti Mälkki
There is a lot of going back-and-forth with the KiB arguments, start the work to migrate away from this. Change-Id: I329864d36137e9a99b5640f4f504c45a02060a40 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/64658 Reviewed-by: Werner Zeh <werner.zeh@siemens.com> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-11-04SMBIOS/SCONFIG: Allow devtree-defined Type 41 entriesAngel Pons
Introduce the `smbios_dev_info` devicetree keyword to specify the instance ID and RefDes (Reference Designation) of onboard devices. Example syntax: device pci 1c.0 on # PCIe Port #1 device pci 00.0 on smbios_dev_info 6 end end device pci 1c.1 on # PCIe Port #2 device pci 00.0 on smbios_dev_info 42 "PCIe-PCI Time Machine" end end The `SMBIOS_TYPE41_PROVIDED_BY_DEVTREE` Kconfig option enables using this syntax to control the generated Type 41 entries. When this option is enabled, Type 41 entries are only autogenerated for devices with a defined instance ID. This avoids having to keep track of which instance IDs have been used for every device class. Using `smbios_dev_info` when `SMBIOS_TYPE41_PROVIDED_BY_DEVTREE` is not enabled will result in a build-time error, as the syntax is meaningless in this case. This is done with preprocessor guards around the Type 41 members in `struct device` and the code which uses the guarded members. Although the preprocessor usage isn't particularly elegant, adjusting the devicetree syntax and/or grammar depending on a Kconfig option is probably even worse. Change-Id: Iecca9ada6ee1000674cb5dd7afd5c309d8e1a64b Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/57370 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-by: Nico Huber <nico.h@gmx.de>
2021-10-22include/device: ensure valid link/bus is passed to mp_cpu_bus_initFelix Held
When a chipset or mainboard devicetree doesn't have any LAPIC devices in its CPU cluster, not only the LAPIC device, but also the link/bus between the CPU cluster device and the LAPIC devices will be missing and the CPU cluster's dev->link_list will be NULL. This patch handles this case in the common code like commit 3c0ecd57c174b7391c66d22406effe18ce570cac (soc/intel/common/cpu: Handle non-zero BSP APIC ID in init_cpus) and commit ba936ce5db819d5ecb34e83a998b2390ecbdc4b9 (soc/intel/denverton_ns: Ensure CPU device has a valid link) already did in the common Intel SoC and the Denverton code. With this change all CPUs and SoC that use the common mp_cpu_bus_init as init function in the CPU cluster's device operations struct won't require having at least one LAPIC device in the chipset or mainboard device tree. Signed-off-by: Felix Held <felix-coreboot@felixheld.de> Change-Id: Ib0d85de5cafb6390b8fbd512186899d6a815e972 Reviewed-on: https://review.coreboot.org/c/coreboot/+/58508 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Raul Rangel <rrangel@chromium.org>
2021-09-24device: Drop unused function `dev_find_matching_device_on_bus`Furquan Shaikh
With use of device pointers, `dev_find_matching_device_on_bus()` is now unused and hence this change drops the function. Change-Id: I30fcb2d9932d770ca614cceffb15646ce8256465 Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/57846 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Karthik Ramasubramanian <kramasub@google.com> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
2021-09-20device: Add helper macros for device pointers using alias namesFurquan Shaikh
This change provides helper macros for generating pointer name and weak pointer definition for devices using alias names. This will be helpful for developers to reference the device pointer with alias names used in the device tree. Change-Id: I3a5a3c7fdc2c521bac9ab3336f5a6ebecd621e04 Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/57738 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
2021-09-06device/device.h: Drop unused function declarationAngel Pons
The `dev_optimize()` function is neither defined nor used anywhere in the tree. Drop its unnecessary declaration. Change-Id: I902bda3244c6496a04f364fad3ecbbdd118dd543 Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/57398 Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-by: Felix Held <felix-coreboot@felixheld.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-06-17device: Add helper function devfn_disable()Subrata Banik
devfn_disable() function is used to disable a device based on given bus, device function number. This function checks if the device is at enable state and disables the device. Change-Id: Ia4a8bfec7fc95c729a5bb156f88e9aab3bf5dd41 Signed-off-by: Subrata Banik <subrata.banik@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/55354 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
2021-06-09device: Add helper function is_devfn_enabled()Subrata Banik
is_devfn_enabled() function helps to check if a device is enabled based on given device function number. This function internally called is_dev_enabled() to check device state. Change-Id: I6aeba0da05b13b70155a991f69a6abf7eb48a78c Signed-off-by: Subrata Banik <subrata.banik@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/55278 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
2021-05-24device: Consider fw_config probing in `is_dev_enabled()`Furquan Shaikh
With the introduction of fw_config support in coreboot, it is possible for mainboards to control the state of a device (on/off) in ramstage using fw_config probe conditions. However, the device tree in immutable in all other stages and hence `is_dev_enabled()` does not really reflect the true state as in ramstage. This change adds a call to `fw_config_probe_dev()` in `is_dev_enabled()` when device tree is immutable (by checking DEVTREE_EARLY) to first check if device is disabled because of device probe conditions. If so, then it reports device as being disabled. Else, dev->enabled is used to report the device state. This allows early stages (bootblock, romstage) to use `is_dev_enabled()` to get the true state of the device by taking probe conditions into account and eliminates the need for each caller to perform their own separate probing. Change-Id: Ifede6775bda245cba199d3419aebd782dc690f2c Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/54752 Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-by: Karthik Ramasubramanian <kramasub@google.com> Reviewed-by: EricR Lai <ericr_lai@compal.corp-partner.google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-05-10device: Drop unused `uma_memory_{base,size}` globalsAngel Pons
These global variables are not used anywhere. Drop them. Change-Id: I3fe60b970153d913ae7b005257e2b53647d6f343 Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/53977 Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-02-24device/device.c: Rename .disable to .vga_disableArthur Heymans
This makes it clear what this function pointer is used for. Change-Id: I2090e164edee513e05a9409d6c7d18c2cdeb8662 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/51009 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-01-30device: Drop `mmconf_resource_init` functionAngel Pons
All uses of `mmconf_resource_init` have been replaced in previous patches with `mmconf_resource`, which uses Kconfig symbol values. Change-Id: I4473268016ed511aa5c4930a71977e722e34162a Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/50112 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
2021-01-12device: Use __pci_0_00_0_config in config_of_soc()Furquan Shaikh
This change updates the definition of config_of_soc() to a macro that expands to __pci_0_00_0_config instead of accessing the config structure by referencing the struct device. This allows linker to optimize out unused portions of the device tree from early stages. With this change, bootblock .text section size drops as follows: Platform | Size without change | Size with change | Reduction | ---------------|---------------------|------------------|-------------| GLK (ampton) | 27112 bytes | 9832 bytes | 17280 bytes | APL (reef) | 26488 bytes | 17528 bytes | 8960 bytes | TGL (volteer2) | 47760 bytes | 21648 bytes | 26112 bytes | CML (hatch) | 40616 bytes | 22792 bytes | 17824 bytes | JSL (waddledee)| 37872 bytes | 19408 bytes | 18464 bytes | KBL (soraka) | 31840 bytes | 21568 bytes | 10272 bytes | As static.h is now included in device.h which gets pulled in during the unit tests, a dummy static.h is added under tests/include. Change-Id: I1fbf5b9817065e967e46188739978a1cc96c2c7e Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/49215 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-by: Nico Huber <nico.h@gmx.de>
2020-12-28device + util/sconfig: introduce new device `gpio`Michael Niewöhner
Introduce a new device `gpio` that is going to be used for generic abstraction of gpio operations in the devicetree. The general idea behind this is that every chip can have gpios that shall be accessible in a very generic way by any driver through the devicetree. The chip that implements the chip-specific gpio operations has to assign them to the generic device operations struct, which then gets assigned to the gpio device during device probing. See CB:48583 for how this gets done for the SoCs using intelblocks/gpio. The gpio device then can be added to the devicetree with an alias name like in the following example: chip soc/whateverlake device gpio 0 alias soc_gpio on end ... end Any driver that requires access to this gpio device needs to have a device pointer (or multiple) and an option for specifying the gpio to be used in its chip config like this: struct drivers_ipmi_config { ... DEVTREE_CONST struct device *gpio_dev; u16 post_complete_gpio; ... }; The device `soc_gpio` can then be linked to the chip driver's `gpio_dev` above by using the syntax `use ... as ...`, which was introduced in commit 8e1ea52: chip drivers/ipmi use soc_gpio as gpio_dev register "bmc_jumper_gpio" = "GPP_D22" ... end The IPMI driver can then use the generic gpio operations without any knowlege of the chip's specifics: unsigned int gpio_val; const struct gpio_operations *gpio_ops; gpio_ops = dev_get_gpio_ops(conf->gpio_dev); gpio_val = gpio_ops->get(conf->bmc_jumper_gpio); For a full example have a look at CB:48096 and CB:48095. This change adds the new device type to sconfig and adds generic gpio operations to the `device_operations` struct. Also, a helper for getting the gpio operations from a device after checking them for NULL pointers gets added. Successfully tested on Supermicro X11SSM-F with CB:48097, X11SSH-TF with CB:48711 and OCP DeltaLake with CB:48672. Change-Id: Ic4572ad8b37bd1afd2fb213b2c67fb8aec536786 Tested-by: Johnny Lin <Johnny_Lin@wiwynn.com> Tested-by: Michael Niewöhner <foss@mniewoehner.de> Tested-by: Patrick Rudolph <siro@das-labor.org> Signed-off-by: Michael Niewöhner <foss@mniewoehner.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/48582 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de>
2020-12-06include/device/device: add comment that config_of_soc never returns NULLFelix Held
Since config_of() calls die() if dev or dev->chip_info are NULL, config_of_soc() will either return a non-NULL pointer or won't return. Change-Id: I6de6bb1610e823af215436c94ff1a78ff6b86b78 Signed-off-by: Felix Held <felix-coreboot@felixheld.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/48359 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Alexander Couzens <lynxis@fe80.eu>
2020-10-29soc/intel/xeon_sp: Move function debug macrosMarc Jones
Move the macros for printing debug information to debug.h in the common console include directory and device include file. These are available if the platform selects DEFAULT_CONSOLE_LOGLEVEL_8. The macros could be used by any platform. Change-Id: Ie237bdf8cdc42c76f38a0c820fdc92e81095f47c Signed-off-by: Marc Jones <marcjones@sysproconsulting.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/46093 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Jay Talbott <JayTalbott@sysproconsulting.com> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2020-10-29include/device/device.h: Move resource debug macrosMarc Jones
Add general debug macros that print resource information. These are available to select if DEFAULT_CONSOLE_LOGLEVEL_8. The macros are helpful in debugging complex resource allocation with multiple buses. The macros are moved from soc/intel/xeon_sp, where they were originally developed. Change-Id: I2bdab7770ca5ee5901f17a8af3a9a1001b6702e4 Signed-off-by: Marc Jones <marcjones@sysproconsulting.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/46304 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Jay Talbott <JayTalbott@sysproconsulting.com> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2020-10-21device: Export enable_static_device() functionDuncan Laurie
The work done by enable_static_devices() and scan_generic_bus() is common and can be used by other device handlers to enable a single static device. Signed-off-by: Duncan Laurie <dlaurie@google.com> Change-Id: Ibfde9c4eb794714ebd9800e52b91169ceba15266 Reviewed-on: https://review.coreboot.org/c/coreboot/+/46541 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
2020-10-08device: Clarify use of `config_of()`Nico Huber
We don't want unnecessary die() calls to spread throughout coreboot. Chances are high that we'd add a NON_FATAL_DIE Kconfig eventually. Change-Id: I01c7efdf23672bad3a195b7dc1565a3cc8a087bd Signed-off-by: Nico Huber <nico.h@gmx.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/46046 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Werner Zeh <werner.zeh@siemens.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-07-28device: Add find_dev_nested_path helper functionRob Barnes
Add find_dev_nested_path helper function to simplify finding deeply nested devices. BUG=b:157580724 TEST=Find bluetooth device on dalboz Change-Id: I48fa5fcad0030fb6dcea97b9fc76e1d3d3f9b28f Signed-off-by: Rob Barnes <robbarnes@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/43776 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Raul Rangel <rrangel@chromium.org>
2020-07-26device/device.h: Add `is_dev_enabled` functionAngel Pons
There are many places where we do this. Put it inside an inline function for convenience reasons. Change-Id: I5515a52458b6c78c1a723cb08e6471eb9bac9cd6 Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/43871 Reviewed-by: Felix Singer <felixsinger@posteo.net> Reviewed-by: Michael Niewöhner Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-06-02fw_config: Add firmware configuration interfaceDuncan Laurie
This change introduces a new top-level interface for interacting with a bitmask providing firmware configuration information. This is motivated by Chromebook mainboards that need to support multiple different configurations at runtime with the same BIOS. In these devices the Embedded Controller provides a bitmask that can be broken down into different fields and each field can then be broken down into different options. The firmware configuration value could also be stored in CBFS and this interface will look in CBFS first to allow the Embedded Controller value to be overridden. The firmware configuration interface is intended to easily integrate into devicetree.cb and lead to less code duplication for new mainboards that make use of this feature. BUG=b:147462631 TEST=this provides a new interface that is tested in subsequent commits Change-Id: I1e889c235a81545e2ec0e3a34dfa750ac828a330 Signed-off-by: Duncan Laurie <dlaurie@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/41209 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
2020-05-12device/pci_device: Extract pci_domain_set_resources from SOCRaul E Rangel
pci_domain_set_resources is duplicated in all the SOCs. This change promotes the duplicated function. Picasso was adding it again in the northbridge patch. I decided to promote the function instead of duplicating it. BUG=b:147042464 TEST=Build and boot trembyle. Signed-off-by: Raul E Rangel <rrangel@chromium.org> Change-Id: Iba9661ac2c3a1803783d5aa32404143c9144aea5 Reviewed-on: https://review.coreboot.org/c/coreboot/+/41041 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2020-05-01include/device/device.h: Include <smbios.h>Elyes HAOUAS
smbios_slot_{type,data_width,length,designation} used for smbios_type_9 needs "smbios.h" Also use already defined 'smbios_type11' in "smbios.h". This will also include <smbios.h> in "static.c" file, this we can remove indirect includes of <smbios.h> in "chip.h" Change-Id: Id412a504da2fd75648636febd150356569e07935 Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/c/coreboot/+/40310 Reviewed-by: Patrick Georgi <pgeorgi@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-04-28device: Constify struct device * parameter to acpi_inject_dsdtFurquan Shaikh
.acpi_inject_dsdt() does not need to modify the device structure. Hence, this change makes the struct device * parameter to acpi_inject_dsdt as const. Change-Id: I3b096d9a5a9d649193e32ea686d5de9f78124997 Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/40711 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-04-28device: Constify struct device * parameter to acpi_fill_ssdt()Furquan Shaikh
.acpi_fill_ssdt() does not need to modify the device structure. This change makes the struct device * parameter to acpi_fill_ssdt() as const. Change-Id: I110f4c67c3b6671c9ac0a82e02609902a8ee5d5c Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/40710 Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr> Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-04-28device: Constify struct device * parameter to dev_nameFurquan Shaikh
dev_name() does not need to modify the device structure. Hence, this change makes the struct device * parameter to dev_name() as const. Change-Id: I6a94394385e45fd76f68218bf57914bddd2e2121 Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/40703 Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr> Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-04-28device: Constify struct device * parameter to write_acpi_tablesFurquan Shaikh
.write_acpi_tables() should not be updating the device structure. This change makes the struct device * argument to it as const. Change-Id: I50d013e83a404e0a0e3837ca16fa75c7eaa0e14a Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/40701 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Raul Rangel <rrangel@chromium.org>
2020-04-22device: Add helper function to find matching device on busFurquan Shaikh
This change adds a helper function dev_find_matching_device_on_bus() which scans all the child devices on the given bus and calls a match function provided by the caller. It returns the first device that the match function returns true for, else NULL if no such device is found. Change-Id: I2e3332c0a175ab995c523f078f29a9f498f17931 Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/40543 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-04-22device: Add a helper to find device behind a PCI-to-PCI bridge deviceFurquan Shaikh
This change adds a helper function to find PCI device with dev# and function# behind a PCI-to-PCI bridge device. BUG=b:153858769 BRANCH=None TEST=None Signed-off-by: Furquan Shaikh <furquan@google.com> Change-Id: Ie5672b35cda66431a0f1977f217bdf61d3012ace Reviewed-on: https://review.coreboot.org/c/coreboot/+/40474 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-04-10Replace DEVICE_NOOP with noop_(set|read)_resourcesNico Huber
`.read_resources` and `.set_resources` are the only two device operations that are considered mandatory. Other function pointers can be left NULL. Having dedicated no-op implementations for the two mandatory fields should stop the leaking of no-op pointers to other fields. Change-Id: I6469a7568dc24317c95e238749d878e798b0a362 Signed-off-by: Nico Huber <nico.h@gmx.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/40207 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr> Reviewed-by: Edward O'Callaghan <quasisec@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-04-02Trim `.acpi_fill_ssdt_generator` and `.acpi_inject_dsdt_generator`Nico Huber
These two identifiers were always very confusing. We're not filling and injecting generators. We are filling SSDTs and injecting into the DSDT. So drop the `_generator` suffix. Hopefully, this also makes ACPI look a little less scary. Change-Id: I6f0e79632c9c855f38fe24c0186388a25990c44d Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/39977 Reviewed-by: Felix Held <felix-coreboot@felixheld.de> Reviewed-by: David Guckian Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-02-08Add configurable ramstage support for minimal PCI scanningRonald G. Minnich
This CL has changes that allow us to enable a configurable ramstage, and one change that allows us to minimize PCI scanning. Minimal scanning is a frequently requested feature. To enable it, we add two new variables to src/Kconfig CONFIGURABLE_RAMSTAGE is the overall variable controlling other options for minimizing the ramstage. MINIMAL_PCI_SCANNING is how we indicate we wish to enable minimal PCI scanning. Some devices must be scanned in all cases, such as 0:0.0. To indicate which devices we must scan, we add a new mandatory keyword to sconfig It is used in place of on, off, or hidden, and indicates a device is enabled and mandatory. Mandatory devices are always scanned. When MINIMAL_PCI_SCANNING is enabled, ONLY mandatory devices are scanned. We further add support in src/device/pci_device.c to manage both MINIMAL_PCI_SCANNING and mandatory devices. Finally, to show how this works in practice, we add mandatory keywords to 3 devices on the qemu-q35. TEST= 1. This is tested and working on the qemu-q35 target. 2. On CML-Hatch Before CL: Total Boot time: ~685ms After CL: Total Boot time: ~615ms Change-Id: I2073d9f8e9297c2b02530821ebb634ea2a5c758e Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/36221 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Jeremy Soller <jeremy@system76.com>
2020-02-05pciexp: Add support for allocating PCI express hotplug resourcesJeremy Soller
This change adds support for allocating resources for PCI express hotplug bridges when PCIEXP_HOTPLUG is selected. By default, this will add 32 PCI subordinate numbers (buses), 256 MiB of prefetchable memory, 8 MiB of non-prefetchable memory, and 8 KiB of I/O space to any device with the PCI_EXP_SLTCAP_HPC bit set in the PCI_EXP_SLTCAP register, which indicates hot-plugging capability. The resource allocation is configurable, please see the PCIEXP_HOTPLUG_* variables in src/device/Kconfig. In order to support the allocation of hotplugged PCI buses, a new field is added to struct device called hotplug_buses. This is defaulted to zero, but when set, it adds the hotplug_buses value to the subordinate value of the PCI bridge. This allows devices to be plugged in and unplugged after boot. This code was tested on the System76 Darter Pro (darp6). Before this change, there are not enough resources allocated to the Thunderbolt PCI bridge to allow plugging in new devices after boot. This can be worked around in the Linux kernel by passing a boot param such as: pci=assign-busses,hpbussize=32,realloc This change makes it possible to use Thunderbolt hotplugging without kernel parameters, and attempts to match closely what our motherboard manufacturer's firmware does by default. Signed-off-by: Jeremy Soller <jeremy@system76.com> Change-Id: I500191626584b83e6a8ae38417fd324b5e803afc Reviewed-on: https://review.coreboot.org/c/coreboot/+/35946 Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-01-04device/smbus: Drop unused smbus_set_link()Kyösti Mälkki
I expect it to be easier to just remodel the support for i2c multiplexers instead. Besides, there was no proper bounds for pbus_num when accessing pbus_a[]. Change-Id: I17f33b308c01e48bc03b142550535c32862442ac Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/38161 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Nico Huber <nico.h@gmx.de>
2019-12-19Drop ROMCC code and header guardsArthur Heymans
Change-Id: I730f80afd8aad250f26534435aec24bea75a849c Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/37334 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
2019-11-21device/pci: Reduce scope of dev_find_slot()Kyösti Mälkki
We only keep it around because soc/intel debugging still depends on it. Change-Id: I3ea37c097bbcc3cf5c0574c7d727eae4f5bee307 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/34084 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
2019-11-18include: Make stdbool.h a separate fileJulius Werner
This patch moves the traditional POSIX stdbool.h definitions out from stdint.h into their own file. This helps for using these definitions in commonlib code which may be compiled in different environments. For coreboot everything should chain-include this stuff via types.h anyway so nothing should change. Change-Id: Ic8d52be80b64d8e9564f3aee8975cb25e4c187f5 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/36837 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2019-10-08device: Use scan_static_bus() over scan_lpc_bus()Nico Huber
Devices behind LPC can expose more buses (e.g. I2C on a super-i/o). So we should scan buses on LPC devices, too. Change-Id: I0eb005e41b9168fffc344ee8e666d43b605a30ba Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/29474 Reviewed-by: Felix Held <felix-coreboot@felixheld.de> Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-by: Patrick Rudolph <siro@das-labor.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2019-10-08device/root_device: Consolidate common _scan_bus() functionsNico Huber
scan_usb_bus() and root_dev_scan_bus() had the very same implementation. So rename the latter to scan_static_bus() and use that for both cases. Change-Id: If0aba9c690b23e3716f2d47ff7a8c3e8f6d82679 Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/31901 Reviewed-by: Felix Held <felix-coreboot@felixheld.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2019-10-07device: Rename scan_static_bus() -> enable_static_devices()Nico Huber
The new name should reflect better what this function does, as that is only one specific step of the scanning. Change-Id: I9c9dc437b6117112bb28550855a2c38044dfbfa5 Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/31900 Reviewed-by: Felix Held <felix-coreboot@felixheld.de> Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-by: Patrick Rudolph <siro@das-labor.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2019-10-06device/pci: Enable full 16-bit VGA port i/o decodingNico Huber
So, the PCI to PCI bridge specification had a pitfall for us: Originally, when decoding i/o ports for legacy VGA cycles, bridges should only consider the 10 least significant bits of the port address. This means all VGA registers were aliased every 1024 ports! e.g. 0x3b0 was also decoded as 0x7b0, 0xbb0 etc. However, it seems, we never reserved the aliased ports, resulting in silent conflicts we preallocated resources. We neither use much external VGA nor many i/o ports these days, so nobody noticed. To avoid this mess, a bridge control bit (VGA16) was introduced in 2003 to enable decoding of 16-bit port addresses. As older systems seem rather safe and well tested, and newer systems should support this bit, we'll use it if possible and only warn if not. With old (AGP era) hardware one will likely encounter a warning like this: found VGA at PCI: 06:00.0 A bridge on the path doesn't support 16-bit VGA decoding! This is not generally fatal, but makes unnoticed resource conflicts more likely. Change-Id: Id7a07f069dd54331df79f605c6bcda37882a602d Signed-off-by: Nico Huber <nico.h@gmx.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/35516 Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-by: Michael Niewöhner Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2019-10-02soc/intel: Replace config_of_path() with config_of_soc()Kyösti Mälkki
The previously provided device path made no difference, all integrated PCI devices point back to the same chip_info structure. Change reduces the exposure of various SA_DEVFN_xx and PCH_DEVFN_xx from (ugly) soc/pci_devs.h. Change-Id: Ibf13645fdd3ef7fd3d5c8217bb24d7ede045c790 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/35656 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2019-09-27device: add commentary to dev_find_slot()Aaron Durbin
dev_find_slot() can sometimes fail to return the desired device object prior to full PCI enumeration. Comment the declaration and implementation accordingly to help the user understand the problem and avoid its usage. Change-Id: I3fe1f24ff015d3e4f272323947f057e4c910186c Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/35632 Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2019-08-23arch/x86/acpi: Add acpi_device_hidPatrick Rudolph
Allow a driver to return device specific _HID, which will be consumed by acpigen in order to generate proper SSDTs. Change-Id: Ibb79eb00c008a3c3cdc12ad2a48b88a055a9216f Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/35006 Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2019-08-15cpu/intel: Replace bsp_init_and_start_aps()Kyösti Mälkki
Change-Id: I7176efdd1000789a093a1b4e243b4b150e6bb06f Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/34864 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2019-07-18devicetree: Add accessors for chip_infoKyösti Mälkki
Apply uniform style of error messages for missing device nodes and chip_info. Change-Id: I70def4599509b8193e44ea3f02c4906f865b4469 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/34298 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
2019-07-17device: Move pci_irqs outside DEVTREE_EARLYKyösti Mälkki
Only needed in ramstage, and only for MP tables. Change-Id: Ia7c1e153b948aeefa4c3bea4920b02a91a417096 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/33922 Reviewed-by: Martin Roth <martinroth@google.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2019-07-17soc/intel: Fix regression with hidden PCI devicesKyösti Mälkki
Fix regression with commit 903b40a soc/intel: Replace uses of dev_find_slot() Platforms where FSP hides PCI devices before enumeration may halt with error message 'PCI: dev is NULL!'. The workaround here is to print an error message revealing the faulty source code function and revert to old behaviour of dev_find_slot(). Change-Id: I5eab3e7f1993b686103eaa257aacda379dc259fa Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/34285 Reviewed-by: Matt DeVillier <matt.devillier@gmail.com> Reviewed-by: Maxim Polyakov <max.senia.poliak@gmail.com> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Christian Walter <christian.walter@9elements.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2019-07-15device: Remove device->ops from early stagesKyösti Mälkki
Change-Id: I7a361187570716df94a3fd441ae78c0f805b1dda Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/33921 Reviewed-by: Patrick Rudolph <siro@das-labor.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2019-07-12device/pci: Declare pcidev_path_on_bus()Kyösti Mälkki
It is recommended to never reference PCI busses using a static number. There is exception with OPROM execution, where we want to translate the bus number captured from the actual IO operation into a matching device node in the devicetree. Change-Id: I733c645ac5581c000b4cd6cdc05829cd039324d5 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/34077 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2019-07-07device/pci: Declare pci_root_bus()Kyösti Mälkki
This is used a lot, cache the result so search of domain from devicetree is only done once. Improvement only applies when MAYBE_STATIC evaluates to static. Change-Id: If675abb632fe68acd59ba0bdfef854da3e0839a9 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/34004 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2019-06-28device: Tidy up add_more_links()Jacob Garber
- Add documentation comment - Use 'unsigned int' to make checkpatch happy - Return early if no more links need to be added - Add error handling if malloc fails - Clean up whitespace Change-Id: I70976ee2539b058721d0ae3c15edf279253cd9b7 Signed-off-by: Jacob Garber <jgarber1@ualberta.ca> Found-by: Coverity CID 1229634 Reviewed-on: https://review.coreboot.org/c/coreboot/+/33238 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2019-06-28device,nb/amd: Deduplicate add_more_links()Jacob Garber
This function is duplicated in many AMD northbridge files, and all the definitions have started to diverge somewhat. This moves a single copy into device utils and deletes the rest. The function definition from nb/amd/amdfam10 was chosen to be kept, since it contains several fixes from commit 59d609217b (AMD fam10: Fix add_more_links) that the others don't have. For the ease of diffing, the checkpatch lints and other small cleanups will be done in a follow-up patch. Change-Id: I5ea73126092449db3f18e19ac0660439313072de Signed-off-by: Jacob Garber <jgarber1@ualberta.ca> Reviewed-on: https://review.coreboot.org/c/coreboot/+/33237 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2019-05-07sconfig: Add SMBIOS type 9 entriesPatrick Rudolph
Add the new field 'smbios_slot_desc', which takes 2 to 4 arguments. The field is valid for PCI devices and only compiled if SMBIOS table generation is enabled. smbios_slot_desc arguments: 1. slot type 2. slot lenth 3. slot designation (optional) 4. slot data width (optional) Example: device pci 1c.1 on smbios_slot_desc "21" "3" "MINI-PCI-FULL" "8" end # PCIe Port #2 Integrated Wireless LAN Tested on Lenovo T520. Change-Id: If95aae3c322d3da47637613b9a872ba1f7af9080 Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/32307 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
2019-03-17resources: introduce io_resource()Subrata Banik
This patch creates new resource function to perform allocation of IO resource, similar to mmio_resource() function does for MMIO. Change-Id: I3fdcabb14302537d6074bfd6a362690c06b66bb5 Signed-off-by: Subrata Banik <subrata.banik@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/31911 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Lijian Zhao <lijian.zhao@intel.com>
2019-03-16device/pci_ops: Have only default PCI bus ops availableKyösti Mälkki
In the current state of the tree we do not utilise the mechanism of having per-device overrides for PCI bus ops. This change effectively inlines all PCI config accessors for ramstage as well. Change-Id: I11c37cadfcbef8fb5657dec6d620e6bccab311a4 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/31753 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2019-03-08coreboot: Replace all IS_ENABLED(CONFIG_XXX) with CONFIG(XXX)Julius Werner
This patch is a raw application of find src/ -type f | xargs sed -i -e 's/IS_ENABLED\s*(CONFIG_/CONFIG(/g' Change-Id: I6262d6d5c23cabe23c242b4f38d446b74fe16b88 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/31774 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2019-03-06device/pci_ops: Simplify logic for PCI bus opsKyösti Mälkki
Nobody ever sets ops_pci_bus. This implies pci_bus_ops() always returns pci_bus_default_ops() and get_pbus returns NULL. Change-Id: Ia30d579e1efe6542dc58714f2e7077507847c0de Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/31684 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Nico Huber <nico.h@gmx.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2019-03-04arch/io.h: Separate MMIO and PNP opsKyösti Mälkki
Change-Id: Ie32f1d43168c277be46cdbd7fbfa2445d9899689 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/31699 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2019-01-16buildsystem: Promote rules.h to default includeKyösti Mälkki
Does not fix 3rdparty/, *.S or *.ld or yet. Change-Id: I66b48013dd89540b35ab219d2b64bc13f5f19cda Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/17656 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de>
2019-01-04device: Introduce pcidev_on_root() and friendsKyösti Mälkki
Semantics of dev_find_slot() are ill in the sense that it only works after device enumeration has completed in ramstage. Plan is to declare it as deprecated. Introduce pcidev_on_root() and pcidev_path_on_root() functions to replace cases where this was called with static argument bus == 0. New implementation only walks the root bus of the PCI tree, while old one walked the entire linked list of devices. Introduce pcidev_path_behind() to replace cases where argument bus != 0. The required parent node is typically one of the PCIe root functions that you locate using pcidev_on_root() above. New forms are safe to use with early devicetree and before PCI bus numbers have been assigned. Change-Id: Ie20598d48b4cf6e35e45fc90804bad4728437fc6 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/26447 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
2019-01-04src: Move {pci,pnp}_devfn_t to common 'device/pci_type.h'Elyes HAOUAS
Definitions of these types are arch-agnostic. Shared device subsystem files cannot include arch/pci_ops.h for ARM and arch/io.h for x86. Change-Id: I6a3deea676308e2dc703b5e06558b05235191044 Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/c/29947 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
2019-01-04src: Get rid of device_tElyes HAOUAS
Use of device_t is deprecated. Change-Id: Ie05869901ac33d7089e21110f46c1241f7ee731f Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/c/30047 Reviewed-by: Patrick Georgi <pgeorgi@google.com> Reviewed-by: Patrick Rudolph <siro@das-labor.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2018-09-16sconfig: Allow setting device status in device treeHung-Te Lin
For devices supporting both Linux and Windows, we may find some ACPI devices that only need drivers in Linux and should not even be shown in Windows Device Manager UI. The new 'hidden' keyword in device tree 'device' statement allows devices sharing same driver to call acpi_gen_writeSTA with different values. BUG=b:72200466 BRANCH=eve TEST=Builds and boots properly on device eve Change-Id: Iae881a294b122d3a581b456285d2992ab637fb8e Signed-off-by: Hung-Te Lin <hungte@chromium.org> Reviewed-on: https://review.coreboot.org/28566 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
2018-07-26device: add child traversal helper functionAaron Durbin
Add a function, dev_bus_each_child(), which walks through all the children for a given bus of a device. This helper allows one to walk through all the children of a given device's bus. BUG=b:111808427,b:111743717 TEST=built Change-Id: Iedceb0d19c05b7abd5a48f8dc30f85461bef5ec6 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/27636 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Justin TerAvest <teravest@chromium.org>
2018-05-25device: Move find_dev_path() to device_const.cKyösti Mälkki
Change-Id: I8a27aa7157b5706623272ba9354ed8dff9b8184f Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/26446 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2018-05-25device: Move dev_find_path() to device_const.cNico Huber
Make it available early and use it in dev_find_next_pci_device(). Change-Id: I1d0ad07f37ea79dae2b9a592fcccba5e03fd86d5 Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: https://review.coreboot.org/26294 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
2018-05-11devicetree: Add USB device typeDuncan Laurie
This commit adds support for describing USB ports in devicetree.cb. It allows a USB port location to be described in the tree with configuration information, and ACPI code to be generated that provides this information to the OS. A new scan_usb_bus() is added that will scan bridges for devices so a tree of ports and hubs can be created. The device address is computed with a 'port type' and a 'port id' which is flexible for SOC to handle depending on their specific USB setup and allows USB2 and USB3 ports to be described separately. For example a board may have devices on two ports, one with a USB2 device and one with a USB3 device, both of which are connected to an xHCI controller with a root hub: xHCI | RootHub | | USB2[0] USB3[2] device pci 14.0 on chip drivers/usb/acpi register "name" = ""Root Hub"" device usb 0.0 on chip drivers/usb/acpi register "name" = ""USB 2.0 Port 0"" device usb 2.0 on end end chip drivers/usb/acpi register "name" = ""USB 3.0 Port 2"" device usb 3.2 on end end end end end Change-Id: I64e6eba503cdab49be393465b535e139a8c90ef4 Signed-off-by: Duncan Laurie <dlaurie@google.com> Reviewed-on: https://review.coreboot.org/26169 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
2018-05-02src/device: Fix discarded-qualifiers compilation issueSubrata Banik
coreboot build is broken due to CL: I6830a65bc9cea2907f4209bb97a53ccebcbf248d This patch ensures to build coreboot successfully. Change-Id: I4c9dfc9b19ce159ce1abcfbb287be4ce273cbaf1 Signed-off-by: Subrata Banik <subrata.banik@intel.com> Reviewed-on: https://review.coreboot.org/25985 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2018-04-30device: constify some variablesLubomir Rintel
Change-Id: I6830a65bc9cea2907f4209bb97a53ccebcbf248d Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> Reviewed-on: https://review.coreboot.org/25873 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2018-04-26device: Add flag to disable PCIe ASPMNico Huber
For broken devices that spuriously advertise ASPM, make it possible to decide ASPM activation in the device driver. Change-Id: I491aa32a3ec954be87a474478609f0f3971d0fdf Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: https://review.coreboot.org/25617 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2018-04-20pci: Move inline PCI functions to pci_ops.hPatrick Rudolph
Move inline function where they belong to. Fixes compilation on non x86 platforms. Change-Id: Ia05391c43b8d501bd68df5654bcfb587f8786f71 Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com> Reviewed-on: https://review.coreboot.org/25720 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2017-11-15device: further untangle device_t from struct deviceAaron Durbin
This further allows compilation units to be re-used without having to add macro guards because of declarations not being around in the __SIMPLE_DEVICE__ case. These declarations are for functions that operate on struct device. struct device is a known type so just expose the functions using the correct type. Also, DEVTREE_CONST is empty while in ramstage so there's no reason to separate the declarations. Lastly, fix up device_util.c to use the proper types. It's only compiled in ramstage and it only operates on struct device. Change-Id: I306e0ad220cdab738cb727dda4a93bdec77c5521 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/22420 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
2017-11-10device: untangle device_t from struct device some moreAaron Durbin
This further allows compilation units to be re-used without having to add macro guards because of declarations not being around in the __SIMPLE_DEVICE__ case. These declarations are for functions that operate on struct device. struct device is a known type so just expose the functions using the correct type. Also, DEVTREE_CONST is empty while in ramstage so there's no reason to separate the declarations. They compile regardless of stage. Change-Id: Idd4180437d30e7dfaa9f735416c108841e43129f Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/22397 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Subrata Banik <subrata.banik@intel.com>
2017-09-14device: acpi_name() should take a const struct deviceAaron Durbin
There's no reason to mutate the struct device when determining the ACPI name for a device. Adjust the function pointer signature and the respective implementations to use const struct device. Change-Id: If5e1f4de36a53646616581b01f47c4e86822c42e Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/21527 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Subrata Banik <subrata.banik@intel.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2017-08-09device/pci: untangle struct device and device_tAaron Durbin
This patch uses struct device explicitly for the ramstage functions as that's the actual type it's working on. Additionally, the declarations for types and functions are fully exposed so that compliation units don't have to guard certain functions from use because it's being compiled for multiple stages. Change-Id: I8db23ed400a59073e1e66522d020a5928f71f3a6 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/20902 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
2017-07-13src/include: add IS_ENABLED() around Kconfig symbol referencesMartin Roth
Change-Id: I2fbe6376a1cf98d328464556917638a5679641d2 Signed-off-by: Martin Roth <martinroth@google.com> Reviewed-on: https://review.coreboot.org/20354 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
2017-06-02device/device_util: Add function to determine bridge statePatrick Rudolph
Add a method to get the state of a bridge device. Return true if at least one enabled device on the secondary bus is found. Useful to disable non hotplugable bridges without any devices attached. Change-Id: Ic8fe539d233031d4d177b03dd2c03edb5ab8c88d Signed-off-by: Patrick Rudolph <siro@das-labor.org> Reviewed-on: https://review.coreboot.org/19817 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com> Reviewed-by: Martin Roth <martinroth@google.com>
2017-04-25lib: provide clearer devicetree semanticsAaron Durbin
The devicetree data structures have been available in more than just ramstage and romstage. In order to provide clearer and consistent semantics two new macros are provided: 1. DEVTREE_EARLY which is true when !ENV_RAMSTAGE 2. DEVTREE_CONST as a replacment for ROMSTAGE_CONST The ROMSTAGE_CONST attribute is used in the source code to mark the devicetree data structures as const in early stages even though it's not just romstage. Therefore, rename the attribute to DEVTREE_CONST as that's the actual usage. The only place where the usage was not devicetree related is console_loglevel, but the same name was used for consistency. Any stage that is not ramstage has the const C attribute applied when DEVTREE_CONST is used. Change-Id: Ibd51c2628dc8f68e0896974f7e4e7c8588d333ed Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/19333 Tested-by: build bot (Jenkins) Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com> Reviewed-by: Furquan Shaikh <furquan@google.com>
2017-03-13src/include: Wrap lines at 80 columnsLee Leahy
Fix the following warning detected by checkpatch.pl: WARNING: line over 80 characters Changed a few comments to reduce line length. File src/include/cpu/amd/vr.h was skipped. TEST=Build and run on Galileo Gen2 Change-Id: Ie3c07111acc1f89923fb31135684a6d28a505b61 Signed-off-by: Lee Leahy <Leroy.P.Leahy@intel.com> Reviewed-on: https://review.coreboot.org/18687 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth <martinroth@google.com>
2017-03-13src/include: Remove space after function nameLee Leahy
Fix the following warning detected by checkpatch.pl: WARNING: space prohibited between function name and open parenthesis '(' TEST=Build and run on Galileo Gen2 Change-Id: I0ac30b32bab895ca72f91720eeae5a5067327247 Signed-off-by: Lee Leahy <Leroy.P.Leahy@intel.com> Reviewed-on: https://review.coreboot.org/18656 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth <martinroth@google.com>
2017-03-13src/include: Fix space between type, * and variable nameLee Leahy
Fix the following errors detected by checkpatch.pl: ERROR: "foo * bar" should be "foo *bar" ERROR: "foo* bar" should be "foo *bar" ERROR: "foo*bar" should be "foo *bar" TEST=Build and run on Galileo Gen2 Change-Id: I5a3ff8b92e3ceecb4ddf45d8840454d5310fc6b3 Signed-off-by: Lee Leahy <Leroy.P.Leahy@intel.com> Reviewed-on: https://review.coreboot.org/18655 Reviewed-by: Martin Roth <martinroth@google.com> Tested-by: build bot (Jenkins)
2017-03-12src/include: Remove spaces before tabsLee Leahy
Fix the following warning detected by checkpatch.pl: WARNING: please, no space before tabs TEST=Build and run on Galileo Gen2 Change-Id: If60a58021d595289722d1d6064bea37b0b0bc039 Signed-off-by: Lee Leahy <Leroy.P.Leahy@intel.com> Reviewed-on: https://review.coreboot.org/18652 Tested-by: build bot (Jenkins) Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Martin Roth <martinroth@google.com>
2017-03-09src/include: Fix unsigned warningsLee Leahy
Fix warning detected by checkpatch.pl: WARNING: Prefer 'unsigned int' to bare use of 'unsigned' BRANCH=none BUG=None TEST=Build and run on Galileo Gen2 Change-Id: I23d9b4b715aa74acc387db8fb8d3c73bd5cabfaa Signed-off-by: Lee Leahy <Leroy.P.Leahy@intel.com> Reviewed-on: https://review.coreboot.org/18607 Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com> Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Martin Roth <martinroth@google.com>
2017-02-16device: Add scan_generic_bus supportFurquan Shaikh
scan_smbus routine does not perform any smbus specific operation. Thus, rename the routine to scan_generic_bus so that it can be used by other buses like SPI. Add a wrapper scan_smbus to allow other users of smbus scan to continue working as before. BUG=chrome-os-partner:59832 BRANCH=None TEST=Compiles successfully Change-Id: I8ca1a2b7f2906d186ec39e9223ce18b8a1f27196 Signed-off-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: https://review.coreboot.org/18363 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2017-02-16device: Add a new "SPI" device typeFurquan Shaikh
Add support for a new "SPI" device type in the devicetree to bind a device on the SPI bus. Allow device to provide chip select number for the device as a parameter. Add spi_bus_operations with operation dev_to_bus which allows SoCs to define a translation method for converting "struct device" into a unique SPI bus number. BUG=chrome-os-partner:59832 BRANCH=None TEST=Compiles successfully. Change-Id: I86f09516d3cddd619fef23a4659c9e4eadbcf3fa Signed-off-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: https://review.coreboot.org/18340 Reviewed-by: Duncan Laurie <dlaurie@chromium.org> Tested-by: build bot (Jenkins)
2017-02-06devtree: Drop unused parameter show_devs_tree() callKyösti Mälkki
Change-Id: I14c044bb32713ef4133bce8a8238a2bc200c4959 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/18085 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Martin Roth <martinroth@google.com>
2016-12-07src/device: Get device structure by path typeSubrata Banik
Add helper function to find a device by path type in the device tree. Change-Id: I8846f63bd2488788ea3c7ab5154e7cf431a252bc Credits-to: Aaron Durbin <adurbin@chromium.org> Signed-off-by: Subrata Banik <subrata.banik@intel.com> Signed-off-by: Dhaval V Sharma <dhaval.v.sharma@intel.com> Reviewed-on: https://review.coreboot.org/17731 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins)
2016-12-07MMCONF_SUPPORT: Consolidate resource registrationKyösti Mälkki
Change-Id: Id727270bff9e0288747d178c00f3d747fe223b0f Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/17695 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2016-06-09device: i2c: Add support for I2C bus operationsDuncan Laurie
In order to support doing bus operations on an I2C device that is described in the devicetree there needs to be some linkage of the device and the existing opaque I2C controller bus number. This is provided in a similar fashion to the existing SMBUS operations but modified to fit within the existing I2C infrastructure. Variants of the existing I2C helper functions are provided that will obtain the bus number that corresponds to this device by looking for the SOC-provided I2C bus operation structure to provide a function that will make that translation. For example an SOC using a PCI I2C controller at 0:15.0 could use: soc/intel/.../i2c.c: static int i2c_dev_to_bus(struct device *dev) { if (dev->path.pci.devfn == PCI_DEVFN(0x15, 0)) return 0; return -1; } static struct i2c_bus_operation i2c_bus_ops = { .dev_to_bus = &i2c_dev_to_bus } static struct device_operations i2c_dev_ops = { .ops_i2c_bus = &i2c_bus_ops ... } With an I2C device on that bus at address 0x1a described in the tree: devicetree.cb: device pci 15.0 on # I2C0 chip drivers/i2c/sample device i2c 1a.0 on end end end That driver can then do I2C transactions with the device object without needing to know that the SOC-specific bus number that this I2C device lives on is "0". For example it could read a version value from register address 0 with a byte transaction: drivers/i2c/sample/sample.c: static void i2c_sample_enable(struct device *dev) { uint8_t ver; if (!i2c_dev_readb(dev, 0x00, &ver)) printk(BIOS_INFO, "I2C %s version 0x02x\n", dev_path(dev), ver); } Change-Id: I6c41c8e0d10caabe01cc41da96382074de40e91e Signed-off-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-on: https://review.coreboot.org/15100 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2016-05-21device: Add an ACPI device name and path concept to devicesDuncan Laurie
Add a function to "struct device_operations" to return the ACPI name for the device, and helper functions to find this name (either from the device or its parent) and to build a fully qualified ACPI path from the root device. This addition will allow device drivers to generate their ACPI AML in the SSDT at boot, with customization supplied by devicetree.cb, instead of needing custom DSDT ASL for every mainboard. The root device acpi_name is defined as "\\_SB" and is used to start the path when building a fully qualified name. This requires SOC support to provide handlers for returning the ACPI name for devices that it owns, and those names must match the objects declared in the DSDT. The handler can be done either in each device driver or with a global handler for the entire SOC. Simplified example of how this can be used for an i2c device declared in devicetree.cb with: chip soc/intel/skylake # "\_SB" (from root device) device domain 0 on # "PCI0" device pci 19.2 on # "I2C4" chip drivers/i2c/test0 device i2c 1a.0 on end # "TST0" end end end end And basic SSDT generating code in the device driver: acpigen_write_scope(acpi_device_scope(dev)); acpigen_write_device(acpi_device_name(dev)); acpigen_write_string("_HID", "TEST0000"); acpigen_write_byte("_UID", 0); acpigen_pop_len(); /* device */ acpigen_pop_len(); /* scope */ Will produce this ACPI code: Scope (\_SB.PCI0.I2C4) { Device (TST0) { Name (_HID, "TEST0000") Name (_UID, 0) } } Change-Id: Ie149595aeab96266fa5f006e7934339f0119ac54 Signed-off-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-on: https://review.coreboot.org/14840 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2016-05-16sconfig: Add a new generic device typeDuncan Laurie
Add support for a basic generic device in the devicetree to bind to a device that does not have a specific bus, but may need to be described in tables for the operating system. For instance some chips may have various GPIO connections that need described but do not fall under any other device. In order to support this export the basic 'scan_static_bus()' that can be used in a device_operations->scan_bus() method to scan for the generic devices. It has been possible to get a semi-generic device by using a fake PNP device, but that isn't really appropriate for many devices. Also Re-generate the shipped files for sconfig. Use flex 2.6.0 to avoid everything being rewritten. Clean up the local paths that leak into the generated configs. Change-Id: If45a5b18825bdb2cf1e4ba4297ee426cbd1678e3 Signed-off-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-on: https://review.coreboot.org/14789 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Leroy P Leahy <leroy.p.leahy@intel.com>
2015-06-13Move remap_bsp_lapic to AMD specific codeStefan Reinauer
It's not used outside of very old AMD CPUs. Change-Id: Ide51ef1a526df50d88bf229432d7d36bc777f9eb Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Reviewed-on: http://review.coreboot.org/10538 Tested-by: build bot (Jenkins) Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-by: Marc Jones <marc.jones@se-eng.com>
2015-06-05device_ops: add device_t argument to write_acpi_tablesAlexander Couzens
`device_t device` is missing as argument. Every device_op function should have a `device_t device` argument. Change-Id: I1ba4bfa0ac36a09a82b108249158c80c50f9f5fd Signed-off-by: Alexander Couzens <lynxis@fe80.eu> Reviewed-on: http://review.coreboot.org/9599 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-06-05device_ops: add device_t argument to acpi_fill_ssdt_generatorAlexander Couzens
`device_t device` is missing as argument. Every device_op function should have a `device_t device` argument. Change-Id: I7fca8c3fa15c1be672e50e4422d7ac8e4aaa1e36 Signed-off-by: Alexander Couzens <lynxis@fe80.eu> Reviewed-on: http://review.coreboot.org/9598 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-06-05device_ops: add device_t argument to acpi_inject_dsdt_generatorAlexander Couzens
`device_t device` is missing as argument. Every device_op function should have a `device_t device` argument. Change-Id: I3fc8e0339fa46fe92cc39f7afa896ffd38c26c8d Signed-off-by: Alexander Couzens <lynxis@fe80.eu> Reviewed-on: http://review.coreboot.org/9597 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-06-05AMD K8 fam10: Refactor HT link connection testKyösti Mälkki
Change-Id: I1e935a6b848a59f7f2e58779bceea599032de9e3 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/8562 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan <edward.ocallaghan@koparo.com> Reviewed-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
2015-06-05devicetree: Add fields for HyperTransport scansKyösti Mälkki
Change-Id: I3b00e5e4e45089fbd7d0d6243d5e441bd8929c0b Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/8557 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan <edward.ocallaghan@koparo.com> Reviewed-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
2015-06-04devicetree: Change scan_bus() prototype in device opsKyösti Mälkki
The input/output value max is no longer used for tracking the bus enumeration sequence, everything is handled in the context of devicetree bus objects. Change-Id: I545088bd8eaf205b1436d8c52d3bc7faf4cfb0f9 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/8541 Tested-by: build bot (Jenkins) Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com> Reviewed-by: Timothy Pearson <tpearson@raptorengineeringinc.com> Reviewed-by: Patrick Georgi <pgeorgi@google.com>