summaryrefslogtreecommitdiff
path: root/util/autoport/readme.md
diff options
context:
space:
mode:
authorLeah Rowe <leah@libreboot.org>2024-07-29 05:37:38 +0100
committerLeah Rowe <leah@libreboot.org>2024-07-29 05:37:38 +0100
commitd9403a4a57f4105ddb2350b45dbbcc0eaadd1256 (patch)
treebd7ae7c3126a128e6b2682aebdc5c24efe5dc0d2 /util/autoport/readme.md
parente651c39db0e298ed991f7cc62f0fe1d4c0d460e5 (diff)
remove util/autoport20240612rev320240612_branch
Signed-off-by: Leah Rowe <leah@libreboot.org>
Diffstat (limited to 'util/autoport/readme.md')
-rw-r--r--util/autoport/readme.md457
1 files changed, 0 insertions, 457 deletions
diff --git a/util/autoport/readme.md b/util/autoport/readme.md
deleted file mode 100644
index b546120f..00000000
--- a/util/autoport/readme.md
+++ /dev/null
@@ -1,457 +0,0 @@
-# Porting coreboot using autoport
-
-## Supported platforms
-
-### Chipset
-For any Sandy Bridge or Ivy Bridge platform the generated result should
-be bootable, possibly with minor fixes.
-
-### EC / SuperIO
-EC support is likely to work on Intel-based thinkpads. Other laptops are
-likely to miss EC support. SuperIO support on desktops is more likely to
-work out of the box than any EC.
-
-## How to use autoport
-
-Enable as many devices as possible in the firmware setup of your system.
-This is useful to detect as many devices as possible and make the port
-more complete, as disabled devices cannot be detected.
-
-Boot into target machine under any Linux-based distribution and install
-the following tools on it:
-* `gcc`
-* `golang`
-* `lspci`
-* `dmidecode`
-* `acpidump` (part of `acpica` on some distros)
-
-Clone the coreboot tree and `cd` into it. For more detailed steps, refer
-to Rookie Guide, Lesson 1. Afterwards, run these commands:
-
- cd util/ectool
- make
- cd ../inteltool
- make
- cd ../superiotool
- make
- cd ../autoport
- go build
- sudo ./autoport --input_log=logs --make_logs --coreboot_dir=../..
-
- Note: in case you have problems getting gcc and golang on the target
- machine, you can compile the utilities on another computer and copy
- the binaries to the target machine. You will still need the other
- listed programs on the target machine, but you may place them in the
- same directory as autoport.
-
-Check for unknown detected PCI devices, e.g.:
-
- Unknown PCI device 8086:0085, assuming removable
-
-If autoport says `assuming removable`, you are fine. If it doesn't,
-you may want to add the relevant PCI IDs to autoport. Run `lspci -nn`
-and check which device this is using the PCI ID. Devices which are not
-part of the chipset, such as GPUs or network cards, can be considered
-removable, whereas devices inside the CPU or the PCH such as integrated
-GPUs and bus controllers (SATA, USB, LPC, SMBus...) are non-removable.
-
-Your board has now been added to the tree. However, do not flash it
-in its current state. It can brick your machine. Instead, keep this
-new port and the logs from `util/autoport/logs` somewhere safe. The
-following steps will back up your current firmware, which is always
-recommended, since coreboot may not boot on the first try.
-
-Disassemble your computer and find the flash chip(s). Since there could be
-more than one, this guide will refer to "flash chips" as one or more chips.
-Refer to <https://flashrom.org/Technology> as a reference. The flash chip is
-usually in a `SOIC-8` (2x4 pins, 200mil) or `SOIC-16` (2x8 pins) package. As
-it can be seen on flashrom's wiki, the former package is like any other 8-pin
-chip on the mainboard, but it is slightly larger. The latter package is much
-easier to locate. Always make sure it is a flash chip by looking up what its
-model, printed on it, refers to.
-
-There may be a smaller flash chip for the EC on some laptops, and other chips
-such as network cards may use similar flash chips. These should be left as-is.
-If in doubt, ask!
-
-Once located, use an external flasher to read the flash chips with `flashrom -r`.
-Verify with `flashrom -v` several times that reading is consistent. If it is not,
-troubleshoot your flashing setup. Save the results somewhere safe, preferably on
-media that cannot be easily overwritten and on several devices. You may need this
-later. The write process erases the flash chips first, and erased data on a flash
-chip is lost for a very long time, usually forever!
-
-Compile coreboot for your ported mainboard with some console enabled. The most
-common ones are EHCI debug, serial port and SPI flash console as a last resort.
-If your system is a laptop and has a dedicated video card, you may need to add
-a video BIOS (VBIOS) to coreboot to be able to see any video output. Desktop
-video cards, as well as some MXM video cards, have this VBIOS on a flash chip
-on the card's PCB, so this step is not necessary for them.
-
-Flash coreboot on the machine. On recent Intel chipsets, the flash space is split
-in several regions. Only the one known as "BIOS region" should be flashed. If
-there is only one flash chip present, this is best done by adding the `--ifd`
-and `-i bios` parameters flashrom has (from v1.0 onwards) to specify what flash
-descriptor region it should operate on. If the ME (Management Engine) region is
-not readable, which is the case on most systems, use the `--noverify-all`
-parameter as well.
-
-For systems with two flash chips, this is not so easy. It is probably better to
-ask in coreboot or flashrom communication channels, such as via IRC or on the
-mailing lists.
-
-Once flashed, try to boot. Anything is possible. If a log is generated, save it
-and use it to address any issues. See the next section for useful information.
-Find all the sections marked with `FIXME` and correct them.
-
-Send your work to review.coreboot.org. I mean it, your effort is very appreciated.
-Refer to Rookie Guide, Lesson 2 for instructions on how to submit a patch.
-
-## Manual fixes
-### SPD
-In order to initialize the RAM memory, coreboot needs to know its timings, which vary between
-modules. Socketed RAM has a small EEPROM chip, which is accessible via SMBus and contains the
-timing data. This data is usually known as SPD. Unfortunately, the SMBus addresses may not
-correlate with the RAM slots and cannot always be detected automatically. The address map is
-encoded in function `mainboard_get_spd` in `romstage.c`. By default, autoport uses the most
-common map `0x50, 0x51, 0x52, 0x53` on everything except for Lenovo systems, which are known
-to use `0x50, 0x52, 0x51, 0x53`. To detect the correct memory map, the easiest way is to boot
-on the vendor firmware with just one module in channel 0, slot 0, and check the SMBus address
-the EEPROM has. Under Linux, you can use these commands to see what is on SMBus:
-
- $ sudo modprobe i2c-dev
- $ sudo modprobe i2c-i801
- $ sudo i2cdetect -l
- i2c-0 i2c i915 gmbus ssc I2C adapter
- i2c-1 i2c i915 gmbus vga I2C adapter
- i2c-2 i2c i915 gmbus panel I2C adapter
- i2c-3 i2c i915 gmbus dpc I2C adapter
- i2c-4 i2c i915 gmbus dpb I2C adapter
- i2c-5 i2c i915 gmbus dpd I2C adapter
- i2c-6 i2c DPDDC-B I2C adapter
- i2c-7 i2c DPDDC-C I2C adapter
- i2c-8 i2c DPDDC-D I2C adapter
- i2c-9 smbus SMBus I801 adapter at 0400 SMBus adapter
-
- $ sudo i2cdetect 9
- WARNING! This program can confuse your I2C bus, cause data loss and worse!
- I will probe file /dev/i2c-9.
- I will probe address range 0x03-0x77.
- Continue? [Y/n] y
- 0 1 2 3 4 5 6 7 8 9 a b c d e f
- 00: -- -- -- -- -- 08 -- -- -- -- -- -- --
- 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
- 20: -- -- -- -- 24 -- -- -- -- -- -- -- -- -- -- --
- 30: 30 31 -- -- -- -- -- -- -- -- -- -- -- -- -- --
- 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
- 50: 50 -- -- -- 54 55 56 57 -- -- -- -- 5c 5d 5e 5f
- 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
- 70: -- -- -- -- -- -- -- --
-
-Make sure to replace the `9` on the last command with the bus number for SMBus on
-your system. Here, there is a module at address `0x50`. Since only one module was
-installed on the first slot of the first channel, we know the first position of
-the SPD array must be `0x50`. After testing all the slots, your `mainboard_get_spd`
-should look similar to this:
-
- void mainboard_get_spd(spd_raw_data *spd) {
- read_spd(&spd[0], 0x50);
- read_spd(&spd[1], 0x51);
- read_spd(&spd[2], 0x52);
- read_spd(&spd[3], 0x53);
- }
-
-Note that there should be one line per memory slot on the mainboard.
-
-Note: slot labelling may be missing or unreliable. Use `inteltool` to see
-which slots have modules in them.
-
-This procedure is ideal, if your RAM is socketed. If you have soldered RAM,
-remove any socketed memory modules and check if any EEPROM appears on SMBus.
-If this is the case, you can proceed as if the RAM was socketed. However,
-you may have to guess some entries if there multiple EEPROMs appear.
-
-Most of the time, soldered RAM does not have an EEPROM. Instead, the SPD data is
-inside the main flash chip where the firmware is. If this is the case, you need
-to generate the SPD data to use with coreboot. Look at `inteltool.log`. There
-should be something like this:
-
- /* SPD matching current mode: */
- /* CH0S0 */
- 00: 92 11 0b 03 04 00 00 09 03 52 01 08 0a 00 80 00
- 10: 6e 78 6e 32 6e 11 18 81 20 08 3c 3c 00 f0 00 00
- 20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- 30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 65 00
- 40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- 50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- 60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- 70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 6d 17
- 80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- /* CH1S0 */
- 00: 92 11 0b 03 04 00 00 09 03 52 01 08 0a 00 80 00
- 10: 6e 78 6e 32 6e 11 18 81 20 08 3c 3c 00 f0 00 00
- 20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- 30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 65 00
- 40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- 50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- 60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- 70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 6d 17
- 80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-
-This is not a full-fledged SPD dump, as it only lists
-the currently-used speed configuration, and lacks info
-such as a serial number, vendor and model. Use `xxd`
-to create a binary file with this SPD data:
-
- $ cat | xxd -r > spd.bin <<EOF
- 00: 92 11 0b 03 04 00 00 09 03 52 01 08 0a 00 80 00
- 10: 6e 78 6e 32 6e 11 18 81 20 08 3c 3c 00 f0 00 00
- 20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- 30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 65 00
- 40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- 50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- 60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- 70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 6d 17
- 80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- EOF (press Ctrl + D)
-
-Then, move the generated file into your mainboard's directory
-and hook it up to the build system by adding the following
-lines to `Makefile.mk`:
-
- cbfs-files-y += spd.bin
- spd.bin-file := spd.bin
- spd.bin-type := raw
-
-Now we need coreboot to use this SPD file. The following example
-shows a hybrid configuration, in which one module is soldered and
-the other one is socketed:
-
- void mainboard_get_spd(spd_raw_data *spd)
- {
- void *spd_file;
- size_t spd_file_len = 0;
- /* C0S0 is a soldered RAM with no real SPD. Use stored SPD. */
- spd_file = cbfs_boot_map_with_leak("spd.bin", CBFS_TYPE_RAW,
- &spd_file_len);
- if (spd_file && spd_file_len >= 128)
- memcpy(&spd[0], spd_file, 128);
-
- /* C1S0 is a physical slot. */
- read_spd(&spd[2], 0x52);
- }
-
-If several slots are soldered there are two ways to handle them:
-
-* If all use the same SPD data, use the same file for all the slots. Do
- not forget to copy the data on all the array elements that need it.
-* If they use different data, use several files.
-
-If memory initialization is not working, in particular write training (timB)
-on DIMM's second rank fails, try enabling rank 1 mirroring, which can't be
-detected by inteltool. It is described by SPD field "Address Mapping from Edge
-Connector to DRAM", byte `63` (`0x3f`). Bit 0 describes Rank 1 Mapping,
-0 = standard, 1 = mirrored; set it to 1. Bits 1-7 are reserved.
-
-### `board_info.txt`
-
-`board_info.txt` is a text file used in the board status page to list all
-the supported boards and their specifications. Most of the information
-cannot be detected by autoport. Common entries are:
-
-* `ROM package`, `ROM protocol` and `ROM socketed`:
- These refer to the flash chips you found earlier. You can visit
- <https://flashrom.org/Technology> for more information.
-
-* `Release year`: Use the power of Internet to find that information.
-* `Category`: This describes the type of mainboard you have.
- Valid categories are:
- * `desktop`. Desktops and workstations.
- * `server`. Servers.
- * `laptop`. Laptops, notebooks and netbooks.
- * `half`. Embedded / PC/104 / Half-size boards.
- * `mini`. Mini-ITX / Micro-ITX / Nano-ITX
- * `settop`. Set-top-boxes / Thin clients.
- * `eval`. Development / Evaluation Boards.
- * `sbc`. Single-Board computer.
- * `emulation`: Virtual machines and emulators. May require especial care
- as they often behave differently from real counterparts.
- * `misc`. Anything not fitting the categories above. Not recommended.
-
-* `Flashrom support`: This means whether the internal programmer is usable.
- If flashing coreboot internally works, this should be set to `y`. Else,
- feel free to investigate why it is not working.
-
-### `USBDEBUG_HCD_INDEX`
-
-Which controller the most easily accessible USB debug port is. On Intel,
-1 is for `00:1d.0` and 2 is for `00:1a.0` (yes, it's reversed). Refer to
-<https://www.coreboot.org/EHCI_Debug_Port> for more info.
-
-If you are able to use EHCI debug without setting the HCD index manually,
-this is correct.
-
-### `BOARD_ROMSIZE_KB_2048`
-
-This parameter refers to the total size of the flash chips coreboot will be in.
-This value must be correct for S3 resume to work properly. This parameter also
-defines the size of the generated coreboot image, but that is not a major issue
-since tools like `dd` can be used to cut fragments of a coreboot image to flash
-on smaller chips.
-
-This should be detected automatically, but it may not be detected properly in
-some cases. If it was not detected, put the correct total size here to serve
-as a sane default when configuring coreboot.
-
-### `DRAM_RESET_GATE_GPIO`
-
-When the computer is suspended to RAM (ACPI S3), the RAM reset signal must not
-reach the RAM modules. Otherwise, the computer will not resume and any opened
-programs will be lost. This is done by powering down a MOSFET, which disconnects
-the reset signal from the RAM modules. Most manufacturers put this gate on GPIO
-60 but Lenovo is known to put it on GPIO 10. If suspending and resuming works,
-this value is correct. This can also be determined from the board's schematics.
-
-## GNVS
-
-`mainboard_fill_gnvs` sets values in GNVS, which then ACPI makes use of for
-various power-related functions. Normally, there is no need to modify it
-on laptops (desktops have no "lid"!) but it makes sense to proofread it.
-
-## `gfx.ndid` and `gfx.did`
-
-Those describe which video outputs are declared in ACPI tables.
-Normally, there is no need to have these values, but if you miss some
-non-standard video output, you can declare it there. Bit 31 is set to
-indicate the presence of the output. Byte 1 is the type and byte 0 is
-used for disambigution so that ID composed of byte 1 and 0 is unique.
-
-Types are:
-* 1 = VGA
-* 2 = TV
-* 3 = DVI
-* 4 = LCD
-
-## `c*_acpower` and `c*_battery`
-
-Which mwait states to match to which ACPI levels. Normally, there is no
-need to modify anything unless your device has very special power saving
-requirements.
-
-## `install_intel_vga_int15_handler`
-
-This is used with the Intel VGA BIOS, which is not the default option.
-It is more error-prone than open-source graphics initialization, so do
-not bother with this until your mainboard boots. This is a function
-which takes four parameters:
-1. Which type of LCD panel is connected.
-2. Panel fit.
-3. Boot display.
-4. Display type.
-
-Refer to `src/drivers/intel/gma/int15.h` to see which values can be used.
-For desktops, there is no LCD panel directly connected to the Intel GPU,
-so the first parameter should be `GMA_INT15_ACTIVE_LFP_NONE`. On other
-mainboards, it depends.
-
-## CMOS options
-
-Due to the poor state of CMOS support in coreboot, autoport does not
-support it and this probably won't change until the format in the tree
-improves. If you really care about CMOS options:
-
-* Create files `cmos.layout` and `cmos.default`
-* Enable `HAVE_OPTION_TABLE` and `HAVE_CMOS_DEFAULT` in `Kconfig`
-
-## EC (lenovo)
-
-You need to set `has_keyboard_backlight` (backlit keyboard like X230),
-`has_power_management_beeps` (optional beeps when e.g. plugging the cord
-in) and `has_uwb` (third MiniPCIe slot) in accordance to functions available
-on your machine
-
-In rare cases autoport is unable to detect GPE. You can detect it from
-dmesg or ACPI tables. Look for line in dmesg like
-
- ACPI: EC: GPE = 0x11, I/O: command/status = 0x66, data = 0x62
-
-This means that GPE is `0x11` in ACPI notation. This is the correct
-value for `THINKPAD_EC_GPE`. To get the correct value for `GPE_EC_SCI`
-you need to substract `0x10`, so value for it is `1`.
-
-The pin used to wake the machine from EC is guessed. If your machine doesn't
-wake on lid open and pressing of Fn, change `GPE_EC_WAKE`.
-
-Keep `GPE_EC_WAKE` and `GPE_EC_SCI` in sync with `gpi*_routing`.
-`gpi*_routing` matching `GPE_EC_WAKE` or `GPE_EC_SCI` is set to `2`
-and all others are absent.
-
-If your dock has LPC wires or needs some special treatement you may
-need to add codes to initialize the dock and support code to
-DSDT. See the `init_dock()` for `x60`, `x200` or `x201`.
-
-## EC (generic laptop)
-
-Almost any laptop has an embedded controller. In a nutshell, it's a
-small, low-powered computer designed to be used on laptops. Exact
-functionality differs between machines. Its main functions include:
-
-* Control of power and rfkill to different component
-* Keyboard (PS/2) interface implementation
-* Battery, AC, LID and thermal information exporting
-* Hotkey support
-
-autoport automatically attempts to restore the dumped config but it
-may or may not work and may even lead to a hang or powerdown. If your
-machine stops at `Replaying EC dump ...` try commenting EC replay out
-
-autoport tries to detect if machine has PS/2 interface and if so calls
-`pc_keyboard_init` and exports relevant ACPI objects. If detection fails
-you may have to add them yourself
-
-ACPI methods `_PTS` (prepare to sleep) and `_WAK` (wake) are executed
-when transitioning to sleep or wake state respectively. You may need to
-add power-related calls there to either shutdown some components or to
-add a workaround to stop giving OS thermal info until next refresh.
-
-For exporting the battery/AC/LID/hotkey/thermal info you need to write
-`acpi/ec.asl`. For an easy example look into `apple/macbook21` or
-`packardbell/ms2290`. For information about needed methods consult
-relevant ACPI specs. Tracing which EC events can be done using
-[dynamic debug](https://wiki.ubuntu.com/Kernel/Reference/ACPITricksAndTips)
-
-EC GPE needs to be routed to SCI in order for OS in order to receive
-EC events like "hotkey X pressed" or "AC plugged". autoport attempts
-to detect GPE but in rare cases may fail. You can detect it from
-dmesg or ACPI tables. Look for line in dmesg like
-
- ACPI: EC: GPE = 0x11, I/O: command/status = 0x66, data = 0x62
-
-This means that GPE is `0x11` in ACPI notation. This is the correct
-value for `_GPE`.
-
-Keep GPE in sync with `gpi*_routing`.
-`gpi*_routing` matching `GPE - 0x10` is set to `2`
-and all others are absent. If EC has separate wake pin
-then this GPE needs to be routed as well