Commit graph

88133 commits

Author SHA1 Message Date
Tom Rini
ec58228830 - x86: Fixes for distro booting
- x86: Move some boards to text environment
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Merge tag 'x86-pull-20230809' of https://source.denx.de/u-boot/custodians/u-boot-x86

- x86: Fixes for distro booting
- x86: Move some boards to text environment
2023-08-09 13:17:34 -04:00
Simon Glass
9234b77b9d x86: qemu-x86: Convert to text environment
Use the common include.

Drop everything from the config.h file.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> # Intel Edison
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2023-08-09 23:31:12 +08:00
Simon Glass
3cc4095362 x86: qemu: Add required linux/sizes.h include
These files rely on the config.h file provided this include. Add it
explictily so we can move to a text environment.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> # Intel Edison
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2023-08-09 23:31:12 +08:00
Simon Glass
17b2398534 x86: efi-x86_payload: Convert to text environment
Use the common include.

Drop everything from the config.h file.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> # Intel Edison
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2023-08-09 23:31:12 +08:00
Simon Glass
6ed1cb3552 x86: efi-x86_app: Convert to text environment
Use the common include. Drop the unnecessary changes, since missing
stdio drivers will be ignored.

Drop everything from the config.h file.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> # Intel Edison
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2023-08-09 23:31:12 +08:00
Simon Glass
2d6ebda756 x86: slimbootloader: Convert to text environment
Use the common include along with some additions.

Drop everything from the config.h file.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> # Intel Edison
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
[Drop common env from slimbootloader.env]
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
2023-08-09 23:31:12 +08:00
Simon Glass
d9e6318ce9 x86: minnowmax: Convert to text environment
Use the common include along with some additions.

Drop everything from the config.h file.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> # Intel Edison
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2023-08-09 23:31:12 +08:00
Simon Glass
c166298ed2 x86: cougarcanyon2: Convert to text environment
Use the common include. The existing environment includes "vga" but that
is not valid anymore, so let it use vidconsole

Drop everything from the config.h file.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> # Intel Edison
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2023-08-09 23:31:12 +08:00
Simon Glass
5ccb18a752 x86: cherryhill: Convert to text environment
Use the common include.

Drop everything from the config.h file.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> # Intel Edison
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2023-08-09 23:31:12 +08:00
Simon Glass
a68a7abc3d x86: edison: Convert to text environment
Don't use the common include since Edison's environment is empty.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> # Intel Edison
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2023-08-09 23:31:12 +08:00
Simon Glass
b5948c5d39 x86: galileo: Convert to text environment
Use the common include.

Drop everything from the config.h file.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> # Intel Edison
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2023-08-09 23:31:12 +08:00
Simon Glass
df827efecd x86: bayleybay: Convert to text environment
Use the common include.

Drop everything from the config.h file.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> # Intel Edison
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2023-08-09 23:31:12 +08:00
Simon Glass
f1e7abf4b9 x86: crownbay: Convert to text environment
Use the common include.

Drop everything from the config.h file.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> # Intel Edison
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2023-08-09 23:31:12 +08:00
Simon Glass
c49a767a6a x86: coreboot: Convert to text environment
Use the common include and add some options specific to this board.

Drop everything from the config.h file.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> # Intel Edison
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2023-08-09 23:31:12 +08:00
Simon Glass
876bc404bd x86: Add a common include for environment settings
Create a text-file version of x86-common.h which can be used by x86
boards.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> # Intel Edison
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2023-08-09 23:31:12 +08:00
Simon Glass
f726545a62 x86: Drop unused distro settings
No x86 board uses distro boot, so drop these settings.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> # Intel Edison
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2023-08-09 23:31:12 +08:00
Simon Glass
8c0090b069 x86: Drop inclusion of ibmpc.h
This is not needed in this file anymore. Drop it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> # Intel Edison
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2023-08-09 23:31:12 +08:00
Simon Glass
c0def3207d x86: edison: Drop inclusion of ibmpc.h
This should be included by files that need it, not the config.h file.
Drop it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> # Intel Edison
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2023-08-09 23:31:12 +08:00
Simon Glass
dbfb6c096e x86: i8254: Include required ibmpc.h header
This is needed for this file, so include it here explicitly.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> # Intel Edison
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2023-08-09 23:31:12 +08:00
Simon Glass
edd53bda53 x86: Drop CFG_SYS_STACK_SIZE
This is only used in one file and the value is the same for both boards
which define it. Use the fixed value of 32KB and drop the CFG. This will
allow removal of the config.h files.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> # Intel Edison
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2023-08-09 23:31:12 +08:00
Simon Glass
63af90e7f0 env: Explain how to use #include files in text environment
Provide documentation on how to share common settings among boards.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> # Intel Edison
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2023-08-09 23:31:12 +08:00
Simon Glass
5e541a05f7 env: Use include/env for text-environment includes
The 'environment' word is too long. We mostly use 'env' in U-Boot, so use
that as the name of the include directory too.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> # Intel Edison
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2023-08-09 23:31:12 +08:00
Simon Glass
f26a966b2e doc: Explain how to avoid the distro-boot scripts
Now that standard boot is available, mention this in the environment
documentation.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> # Intel Edison
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2023-08-09 23:31:12 +08:00
Simon Glass
b985760b7e x86: Update qemu documentation
Add some hints and observations related to booting distros on QEMU on x86.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2023-08-09 23:31:12 +08:00
Simon Glass
cfa5934979 x86: Enable useful options for qemu-86
This build can be used to boot 32-bit standard-distro builds. Enable some
more options, so that all possible EFI UUIDs are decoded, we can search
memory for tables, support the full set of standard-boot features, have
full logging along with debug UART and can boot from CDROM media.

This mirrors a similar patch for qemu-x86_64

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
[Drop the unknown option from defconfig]
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
2023-08-09 23:31:12 +08:00
Simon Glass
b7080bfceb video: Add a Kconfig option for SPL video handoff
At present this feature is enabled in SPL if a bloblist is available.
Some platforms may not want to use this, so add an option to allow the
feature to be disabled.

Note that the feature unfortunately only fills in part of the
video-handoff information, so causes failures on x86 platforms. For now,
disable it there.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com> # qemu-x86_64
2023-08-09 23:31:11 +08:00
Simon Glass
4099df48a6 x86: Correct copying of BIOS mode information
This is copying beyond the end of the destination buffer. Correct the code
by using the size of the  vesa_mode_info struct. We don't need to copy the
rest of the bytes in the buffer.

This long-standing bug prevents virtio bootdevs working correctly on
qemu-x86 at present.

Fixes: 0ca2426bea ("x86: Add support for running option ROMs natively")
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com> # qemu-x86_64
2023-08-09 23:31:11 +08:00
Simon Glass
1fa64e155d Revert "x86: Switch QEMU over to use the bochs driver"
Unfortunately the bochs driver does not currently work with distros.
It causes a hang between grub menu selection and the OS displaying
something.

Preliminary investigation shows that GRUB does not jump to the kernel
at all.

This reproduces reliably.

This reverts commit b8956425d5.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com> # qemu-x86_64
[Slightly modify the commit message about preliminary investigation]
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
2023-08-09 23:31:11 +08:00
Simon Glass
ea6eef27ca x86: Run QEMU machine setup in SPL
Call the hardware-init function from QEMU from SPL. This allows the
video BIOS to operate correctly.

Create an x86-wide qemu.h header to avoid having to #ifdef the header
in spl.c

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com> # qemu-x86_64
2023-08-09 23:31:11 +08:00
Simon Glass
d5a3f14c23 video: Tidy up Makefile rule for video
Drop the duplication and add a single rule which can handle SPL as well.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Nikhil M Jain <n-jain1@ti.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2023-08-09 23:31:11 +08:00
Simon Glass
22080e05fc x86: spl: Drop unwanted debug()
This was left over from some previous debugging. Drop it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2023-08-09 23:31:11 +08:00
Simon Glass
d60fb7a958 x86: coreboot: Update doc for CBFS access
Add an example to show how cbfs is used.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
[Removed CONFIG_CMD_CBFS from defconfig files]
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
2023-08-09 23:31:11 +08:00
Simon Glass
3500ae13c6 bootstd: Add some more debugging in the bootdev uclass
Add some more output to make it easier to see what is going wrong when
a bootdev hunter fails.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2023-08-09 23:31:11 +08:00
Simon Glass
2d5b5a9cdb bootstd: Correct creating of bootdev sibling
Use the correct function here, since there may be multiple IDE devices
available.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
2023-08-09 23:31:11 +08:00
Simon Glass
d7d78576bb bootstd: Rename bootdev_setup_sibling_blk()
This name is a little confusing since it suggests that it sets up the
sibling block device. In fact it sets up a bootdev for it. Rename the
function to make this clearer.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
2023-08-09 23:31:11 +08:00
Simon Glass
3a3543db51 lib: Suppress E when writing error-string output
When CONFIG_ERRNO_STR is not enabled this shows a spurious 'E' from the
format string. Fix this.

Fixes: 7f33194132 ("lib: Support printing an error string")
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2023-08-09 23:31:11 +08:00
Simon Glass
4c4ccc5a04 usb: Return -ENOENT when no devices are found
When USB finds no devices it currently returns -EPERM which bootstd does
not understand. This causes other bootdevs of the same priority to be
skipped.

Fix this by returning the correct error code.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2023-08-09 23:31:11 +08:00
Tom Rini
f26eda936b Pull request for doc-2023-10-rc3
Documentation:
 
 * Update examples for imx8mp_evk
 * OpenOCD debugging guide for TI K3 boards
 * Explain using gadget devices on TI boards
 * Describe best practices for board ports
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Merge tag 'doc-2023-10-rc3' of https://source.denx.de/u-boot/custodians/u-boot-efi

Pull request for doc-2023-10-rc3

Documentation:

* Update examples for imx8mp_evk
* OpenOCD debugging guide for TI K3 boards
* Explain using gadget devices on TI boards
* Describe best practices for board ports
2023-08-09 08:28:50 -04:00
Tom Rini
5852b1d2c3 Merge tag 'fsl-qoriq-2023-8-9' of https://source.denx.de/u-boot/custodians/u-boot-fsl-qoriq
- Drop one unused function for layerscape
2023-08-09 08:28:27 -04:00
Shenlin Liang
0f621ca9b9 arm64: fsl: layerscape: Remove unused functions
Function board_switch_core_volt has not been used since it was
defined

Signed-off-by: Shenlin Liang <liangshenlin@eswincomputing.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
2023-08-09 16:17:53 +08:00
Tom Rini
fa43709b8d doc: Begin adding a best practices document for board ports
To help guide developers down the right path, begin a document that
lists some best practices to follow when creating a new board port.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2023-08-09 08:41:52 +02:00
Fabio Estevam
8134043dad doc: imx8mp_evk: Use in-tree build in the example
To make it consistent with the instructions from other NXP imx8m boards,
such as imx8mm-evk and imx8mn-evk, use U-Boot in-tree build in the
examples.

Signed-off-by: Fabio Estevam <festevam@denx.de>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
2023-08-09 08:41:52 +02:00
Fabio Estevam
961519b58d doc: imx8mp_evk: Remove unneeded export ATF_LOAD_ADDR line
Originally, exporting the ATF_LOAD_ADDR was required, but since binman has
been used to generate the flash.bin, it is no longer needed to do
such manual export.

The ATF address is now passed via binman in imx8mp-u-boot.dtsi:

	atf {
		description = "ARM Trusted Firmware";
		type = "firmware";
		arch = "arm64";
		compression = "none";
		load = <0x970000>;
		entry = <0x970000>;

		atf_blob: atf-blob {
			filename = "bl31.bin";
			type = "atf-bl31";
		};
	};

Remove the  unneeded export ATF_LOAD_ADDR line.

Signed-off-by: Fabio Estevam <festevam@denx.de>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
2023-08-09 08:41:52 +02:00
Miquel Raynal
c631cf84db doc: ti: Explain how the various gadget devices can be used
Describe the current situation wrt the handling of USB devices on AM33xx
based boards, taking the example of a common board (the Beagle Bone
Black) and explaining how the different USB gadgets can be used.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2023-08-09 08:41:52 +02:00
Marcel Ziswiler
636acb4022 doc: board: toradex: fix verdin module output
Fix the Verdin module output which was missing white space for correct
rendering.

While at it also leave product links, add section author also for the
Verdin iMX8M Mini and Plus, and add a missing CROSS_COMPILE export for
the Verdin iMX8M Mini.

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Nishanth Menon <nm@ti.com> #verdin-am62
Reviewed-by: Tom Rini <trini@konsulko.com>
2023-08-09 08:41:52 +02:00
Jit Loon Lim
b8531ac4d1 doc: Add the link for the documentation of the .its
Provide the link for the .its related documentation for Arria10.

Signed-off-by: Jit Loon Lim <jit.loon.lim@intel.com>
2023-08-09 08:41:52 +02:00
Jason Kacines
effe50854a doc: board: ti: k3: Add a guide to debugging with OpenOCD
Bootloader debug usually tends to be a bit dicey prior to DDR and
serial port getting active in the system. JTAG typically remains the
only practical debug option during the initial bringup.

OpenOCD is one of the most popular environment for providing debug
capability via a GDB compatible interface for developers to work with.

Debugging U-Boot and bootloaders on K3 platform does have a bit of
tribal knowledge that is better documented in our common platform
documentation.

Signed-off-by: Jason Kacines <j-kacines@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
2023-08-09 08:41:52 +02:00
Tom Rini
ef8336e270 Merge branch '2023-08-08-introuce-Arm-FF-A-support'
To quote the author:
Adding support for Arm FF-A v1.0 (Arm Firmware Framework for Armv8-A) [A].

FF-A specifies interfaces that enable a pair of software execution
environments aka partitions to communicate with each other. A partition
could be a VM in the Normal or Secure world, an application in S-EL0, or
a Trusted OS in S-EL1.

FF-A is a discoverable bus and similar to architecture features.
FF-A bus is discovered using ARM_SMCCC_FEATURES mechanism performed by
the PSCI driver.

   => dm tree

    Class     Index  Probed  Driver                Name
   -----------------------------------------------------------
   ...
    firmware      0  [ + ]   psci                      |-- psci
    ffa                   0  [   ]   arm_ffa               |   `-- arm_ffa
   ...

Clients are able to probe then use the FF-A bus by calling the DM class
searching APIs (e.g: uclass_first_device).

This implementation of the specification provides support for Aarch64.

The FF-A driver uses the SMC ABIs defined by the FF-A specification to:

    - Discover the presence of secure partitions (SPs) of interest
    - Access an SP's service through communication protocols
      (e.g: EFI MM communication protocol)

The FF-A support provides the following features:

    - Being generic by design and can be used by any Arm 64-bit platform
    - FF-A support can be compiled and used without EFI
    - Support for SMCCCv1.2 x0-x17 registers
    - Support for SMC32 calling convention
    - Support for 32-bit and 64-bit FF-A direct messaging
    - Support for FF-A MM communication (compatible with EFI boot time)
    - Enabling FF-A and MM communication in Corstone1000 platform as a use case
    - A Uclass driver providing generic FF-A methods.
    - An Arm FF-A device driver providing Arm-specific methods and reusing the Uclass methods.
    - A sandbox emulator for Arm FF-A, emulates the FF-A side of the Secure World and provides
      FF-A ABIs inspection methods.
    - An FF-A sandbox device driver for FF-A communication with the emulated Secure World.
      The driver leverages the FF-A Uclass to establish FF-A communication.
    - Sandbox FF-A test cases.
    - A new command called armffa is provided as an example of how to access the
      FF-A bus

For more details about the FF-A support please refer to [B] and refer to [C] for
how to use the armffa command.

Please find at [D] an example of the expected boot logs when enabling
FF-A support for a platform. In this example the platform is
Corstone1000. But it can be any Arm 64-bit platform.

More details:

[A]: https://developer.arm.com/documentation/den0077/latest/
[B]: doc/arch/arm64.ffa.rst
[C]: doc/usage/cmd/armffa.rst
[D]: example of boot logs when enabling FF-A
2023-08-08 15:23:16 -04:00
Abdellatif El Khlifi
13f3470adc arm_ffa: efi: corstone1000: enable MM communication
turn on EFI MM communication

On Corstone-1000 platform MM communication between u-boot
and the secure world (Optee) is done using the FF-A bus.

Changes made are generated using savedefconfig.

Signed-off-by: Abdellatif El Khlifi <abdellatif.elkhlifi@arm.com>
Cc: Tom Rini <trini@konsulko.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Cc: Jens Wiklander <jens.wiklander@linaro.org>
2023-08-08 10:23:32 -04:00
Abdellatif El Khlifi
218b062e8f arm_ffa: efi: introduce FF-A MM communication
Add MM communication support using FF-A transport

This feature allows accessing MM partitions services through
EFI MM communication protocol. MM partitions such as StandAlonneMM
or smm-gateway secure partitions which reside in secure world.

An MM shared buffer and a door bell event are used to exchange
the data.

The data is used by EFI services such as GetVariable()/SetVariable()
and copied from the communication buffer to the MM shared buffer.

The secure partition is notified about availability of data in the
MM shared buffer by an FF-A message (door bell).

On such event, MM SP can read the data and updates the MM shared
buffer with the response data.

The response data is copied back to the communication buffer and
consumed by the EFI subsystem.

MM communication protocol supports FF-A 64-bit direct messaging.

We tested the FF-A MM communication on the Corstone-1000 platform.

We ran the UEFI SCT test suite containing EFI setVariable, getVariable and
getNextVariable tests which involve FF-A MM communication and all tests
are passing with the current changes.

We made the SCT test reports (part of the ACS results) public following the
latest Corstone-1000 platform software release. Please find the test
reports at [1].

[1]: https://gitlab.arm.com/arm-reference-solutions/arm-reference-solutions-test-report/-/tree/master/embedded-a/corstone1000/CORSTONE1000-2023.06/acs_results_fpga.zip

Signed-off-by: Abdellatif El Khlifi <abdellatif.elkhlifi@arm.com>
Tested-by: Gowtham Suresh Kumar <gowtham.sureshkumar@arm.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@konsulko.com>
Cc: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Cc: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2023-08-08 10:22:03 -04:00