doc/board/intel/slimbootloader.rst - platform/external/u-boot - Gitiles

 .. SPDX-License-Identifier: GPL-2.0+
 .. sectionauthor:: Aiden Park <aiden.park@intel.com>

 Slim Bootloader
 ===============

 Introduction
 ------------

 This target is to enable U-Boot_ as a payload of `Slim Bootloader`_ (a.k.a SBL)
 boot firmware which currently supports QEMU, Apollolake, Whiskeylake,
 Coffeelake-R platforms.

 The `Slim Bootloader`_ is designed with multi-stages (Stage1A/B, Stage2, Payload)
 architecture to cover from reset vector to OS booting and it consumes
 `Intel FSP`_ for silicon initialization.

 * Stage1A: Reset vector, CAR init with FSP-T
 * Stage1B: Memory init with FSP-M, CAR teardown, Continue execution in memory
 * Stage2 : Rest of Silicon init with FSP-S, Create HOB, Hand-off to Payload
 * Payload: Payload init with HOB, Load OS from media, Booting OS

 The Slim Bootloader stages (Stage1A/B, Stage2) focus on chipset, hardware and
 platform specific initialization, and it provides useful information to a
 payload in a HOB (Hand-Off Block) which has serial port, memory map, performance
 data info and so on. This is Slim Bootloader architectural design to make a
 payload light-weight, platform independent and more generic across different
 boot solutions or payloads, and to minimize hardware re-initialization in a
 payload.

 Build Instruction for U-Boot as a Slim Bootloader payload
 ---------------------------------------------------------

 Build U-Boot and obtain u-boot-dtb.bin::

    $ make distclean
    $ make slimbootloader_defconfig
    $ make all

 Prepare Slim Bootloader
 -----------------------

 1. Setup Build Environment for Slim Bootloader.

    Refer to `Getting Started`_ page in `Slim Bootloader`_ document site.

 2. Get source code. Let's simply clone the repo::

    $ git clone https://github.com/slimbootloader/slimbootloader.git

 3. Copy u-boot-dtb.bin to Slim Bootloader.
    Slim Bootloader looks for a payload from the specific location.
    Copy the build u-boot-dtb.bin to the expected location::

    $ mkdir -p <Slim Bootloader Dir>/PayloadPkg/PayloadBins/
    $ cp <U-Boot Dir>/u-boot-dtb.bin <Slim Bootloader Dir>/PayloadPkg/PayloadBins/u-boot-dtb.bin

 Build Instruction for Slim Bootloader for QEMU target
 -----------------------------------------------------

 Slim Bootloader supports multiple payloads, and a board of Slim Bootloader
 detects its target payload by PayloadId in board configuration.
 The PayloadId can be any 4 Bytes value.

 1. Update PayloadId. Let's use 'U-BT' as an example::

     $ vi Platform/QemuBoardPkg/CfgData/CfgDataExt_Brd1.dlt
     -GEN_CFG_DATA.PayloadId                     | 'AUTO'
     +GEN_CFG_DATA.PayloadId                     | 'U-BT'

 2. Update payload text base. PAYLOAD_EXE_BASE must be the same as U-Boot
    CONFIG_TEXT_BASE in board/intel/slimbootloader/Kconfig.
    PAYLOAD_LOAD_HIGH must be 0::

     $ vi Platform/QemuBoardPkg/BoardConfig.py
     +               self.PAYLOAD_LOAD_HIGH    = 0
     +               self.PAYLOAD_EXE_BASE     = 0x00100000

 3. Build QEMU target. Make sure u-boot-dtb.bin and U-BT PayloadId
    in build command. The output is Outputs/qemu/SlimBootloader.bin::

    $ python BuildLoader.py build qemu -p "OsLoader.efi:LLDR:Lz4;u-boot-dtb.bin:U-BT:Lzma"

 4. Launch Slim Bootloader on QEMU.
    You should reach at U-Boot serial console::

    $ qemu-system-x86_64 -machine q35 -nographic -serial mon:stdio -pflash Outputs/qemu/SlimBootloader.bin

 Test Linux booting on QEMU target
 ---------------------------------

 Let's use LeafHill (APL) Yocto image for testing.
 Download it from http://downloads.yoctoproject.org/releases/yocto/yocto-2.0/machines/leafhill/.

 1. Prepare Yocto hard disk image::

    $ wget http://downloads.yoctoproject.org/releases/yocto/yocto-2.0/machines/leafhill/leafhill-4.0-jethro-2.0.tar.bz2
    $ tar -xvf leafhill-4.0-jethro-2.0.tar.bz2
    $ ls -l leafhill-4.0-jethro-2.0/binary/core-image-sato-intel-corei7-64.hddimg

 2. Launch Slim Bootloader on QEMU with disk image::

    $ qemu-system-x86_64 -machine q35 -nographic -serial mon:stdio -pflash Outputs/qemu/SlimBootloader.bin -drive id=mydrive,if=none,file=/path/to/core-image-sato-intel-corei7-64.hddimg,format=raw -device ide-hd,drive=mydrive

 3. Update boot environment values on shell::

    => setenv bootfile vmlinuz
    => setenv bootdev scsi
    => boot

 Build Instruction for Slim Bootloader for LeafHill (APL) target
 ---------------------------------------------------------------

 Prepare U-Boot and Slim Bootloader as described at the beginning of this page.
 Also, the PayloadId needs to be set for APL board.

 1. Update PayloadId. Let's use 'U-BT' as an example::

     $ vi Platform/ApollolakeBoardPkg/CfgData/CfgData_Int_LeafHill.dlt
     -GEN_CFG_DATA.PayloadId                     | 'AUTO
     +GEN_CFG_DATA.PayloadId                     | 'U-BT'

 2. Update payload text base.

 * PAYLOAD_EXE_BASE must be the same as U-Boot CONFIG_TEXT_BASE
   in board/intel/slimbootloader/Kconfig.
 * PAYLOAD_LOAD_HIGH must be 0::

     $ vi Platform/ApollolakeBoardPkg/BoardConfig.py
     +               self.PAYLOAD_LOAD_HIGH    = 0
     +               self.PAYLOAD_EXE_BASE     = 0x00100000

 3. Build APL target. Make sure u-boot-dtb.bin and U-BT PayloadId
    in build command. The output is Outputs/apl/Stitch_Components.zip::

    $ python BuildLoader.py build apl -p "OsLoader.efi:LLDR:Lz4;u-boot-dtb.bin:U-BT:Lzma"

 4. Stitch IFWI.

    Refer to Apollolake_ page in Slim Bootloader document site::

    $ python Platform/ApollolakeBoardPkg/Script/StitchLoader.py -i <Existing IFWI> -s Outputs/apl/Stitch_Components.zip -o <Output IFWI>

 5. Flash IFWI.

    Use DediProg to flash IFWI. You should reach at U-Boot serial console.


 Build Instruction to use ELF U-Boot
 -----------------------------------

 1. Enable CONFIG_OF_EMBED::

     $ vi configs/slimbootloader_defconfig
     +CONFIG_OF_EMBED=y

 2. Build U-Boot::

    $ make distclean
    $ make slimbootloader_defconfig
    $ make all
    $ strip u-boot (removing symbol for reduced size)

 3. Do same steps as above

 * Copy u-boot (ELF) to PayloadBins directory
 * Update PayloadId 'U-BT' as above.
 * No need to set PAYLOAD_LOAD_HIGH and PAYLOAD_EXE_BASE.
 * Build Slim Bootloader. Use u-boot instead of u-boot-dtb.bin::

    $ python BuildLoader.py build <qemu or apl> -p "OsLoader.efi:LLDR:Lz4;u-boot:U-BT:Lzma"

 .. _U-Boot: https://source.denx.de/
 .. _`Slim Bootloader`: https://github.com/slimbootloader/
 .. _`Intel FSP`: https://github.com/IntelFsp/
 .. _`Getting Started`: https://slimbootloader.github.io/getting-started/
 .. _Apollolake: https://slimbootloader.github.io/supported-hardware/apollo-lake-crb.html#stitching
	.. SPDX-License-Identifier: GPL-2.0+
	.. sectionauthor:: Aiden Park <aiden.park@intel.com>

	Slim Bootloader
	===============

	Introduction
	------------

	This target is to enable U-Boot_ as a payload of `Slim Bootloader`_ (a.k.a SBL)
	boot firmware which currently supports QEMU, Apollolake, Whiskeylake,
	Coffeelake-R platforms.

	The `Slim Bootloader`_ is designed with multi-stages (Stage1A/B, Stage2, Payload)
	architecture to cover from reset vector to OS booting and it consumes
	`Intel FSP`_ for silicon initialization.

	* Stage1A: Reset vector, CAR init with FSP-T
	* Stage1B: Memory init with FSP-M, CAR teardown, Continue execution in memory
	* Stage2 : Rest of Silicon init with FSP-S, Create HOB, Hand-off to Payload
	* Payload: Payload init with HOB, Load OS from media, Booting OS

	The Slim Bootloader stages (Stage1A/B, Stage2) focus on chipset, hardware and
	platform specific initialization, and it provides useful information to a
	payload in a HOB (Hand-Off Block) which has serial port, memory map, performance
	data info and so on. This is Slim Bootloader architectural design to make a
	payload light-weight, platform independent and more generic across different
	boot solutions or payloads, and to minimize hardware re-initialization in a
	payload.

	Build Instruction for U-Boot as a Slim Bootloader payload
	---------------------------------------------------------

	Build U-Boot and obtain u-boot-dtb.bin::

	$ make distclean
	$ make slimbootloader_defconfig
	$ make all

	Prepare Slim Bootloader
	-----------------------

	1. Setup Build Environment for Slim Bootloader.

	Refer to `Getting Started`_ page in `Slim Bootloader`_ document site.

	2. Get source code. Let's simply clone the repo::

	$ git clone https://github.com/slimbootloader/slimbootloader.git

	3. Copy u-boot-dtb.bin to Slim Bootloader.
	Slim Bootloader looks for a payload from the specific location.
	Copy the build u-boot-dtb.bin to the expected location::

	$ mkdir -p <Slim Bootloader Dir>/PayloadPkg/PayloadBins/
	$ cp <U-Boot Dir>/u-boot-dtb.bin <Slim Bootloader Dir>/PayloadPkg/PayloadBins/u-boot-dtb.bin

	Build Instruction for Slim Bootloader for QEMU target
	-----------------------------------------------------

	Slim Bootloader supports multiple payloads, and a board of Slim Bootloader
	detects its target payload by PayloadId in board configuration.
	The PayloadId can be any 4 Bytes value.

	1. Update PayloadId. Let's use 'U-BT' as an example::

	$ vi Platform/QemuBoardPkg/CfgData/CfgDataExt_Brd1.dlt
	-GEN_CFG_DATA.PayloadId \| 'AUTO'
	+GEN_CFG_DATA.PayloadId \| 'U-BT'

	2. Update payload text base. PAYLOAD_EXE_BASE must be the same as U-Boot
	CONFIG_TEXT_BASE in board/intel/slimbootloader/Kconfig.
	PAYLOAD_LOAD_HIGH must be 0::

	$ vi Platform/QemuBoardPkg/BoardConfig.py
	+ self.PAYLOAD_LOAD_HIGH = 0
	+ self.PAYLOAD_EXE_BASE = 0x00100000

	3. Build QEMU target. Make sure u-boot-dtb.bin and U-BT PayloadId
	in build command. The output is Outputs/qemu/SlimBootloader.bin::

	$ python BuildLoader.py build qemu -p "OsLoader.efi:LLDR:Lz4;u-boot-dtb.bin:U-BT:Lzma"

	4. Launch Slim Bootloader on QEMU.
	You should reach at U-Boot serial console::

	$ qemu-system-x86_64 -machine q35 -nographic -serial mon:stdio -pflash Outputs/qemu/SlimBootloader.bin

	Test Linux booting on QEMU target
	---------------------------------

	Let's use LeafHill (APL) Yocto image for testing.
	Download it from http://downloads.yoctoproject.org/releases/yocto/yocto-2.0/machines/leafhill/.

	1. Prepare Yocto hard disk image::

	$ wget http://downloads.yoctoproject.org/releases/yocto/yocto-2.0/machines/leafhill/leafhill-4.0-jethro-2.0.tar.bz2
	$ tar -xvf leafhill-4.0-jethro-2.0.tar.bz2
	$ ls -l leafhill-4.0-jethro-2.0/binary/core-image-sato-intel-corei7-64.hddimg

	2. Launch Slim Bootloader on QEMU with disk image::

	$ qemu-system-x86_64 -machine q35 -nographic -serial mon:stdio -pflash Outputs/qemu/SlimBootloader.bin -drive id=mydrive,if=none,file=/path/to/core-image-sato-intel-corei7-64.hddimg,format=raw -device ide-hd,drive=mydrive

	3. Update boot environment values on shell::

	=> setenv bootfile vmlinuz
	=> setenv bootdev scsi
	=> boot

	Build Instruction for Slim Bootloader for LeafHill (APL) target
	---------------------------------------------------------------

	Prepare U-Boot and Slim Bootloader as described at the beginning of this page.
	Also, the PayloadId needs to be set for APL board.

	1. Update PayloadId. Let's use 'U-BT' as an example::

	$ vi Platform/ApollolakeBoardPkg/CfgData/CfgData_Int_LeafHill.dlt
	-GEN_CFG_DATA.PayloadId \| 'AUTO
	+GEN_CFG_DATA.PayloadId \| 'U-BT'

	2. Update payload text base.

	* PAYLOAD_EXE_BASE must be the same as U-Boot CONFIG_TEXT_BASE
	in board/intel/slimbootloader/Kconfig.
	* PAYLOAD_LOAD_HIGH must be 0::

	$ vi Platform/ApollolakeBoardPkg/BoardConfig.py
	+ self.PAYLOAD_LOAD_HIGH = 0
	+ self.PAYLOAD_EXE_BASE = 0x00100000

	3. Build APL target. Make sure u-boot-dtb.bin and U-BT PayloadId
	in build command. The output is Outputs/apl/Stitch_Components.zip::

	$ python BuildLoader.py build apl -p "OsLoader.efi:LLDR:Lz4;u-boot-dtb.bin:U-BT:Lzma"

	4. Stitch IFWI.

	Refer to Apollolake_ page in Slim Bootloader document site::

	$ python Platform/ApollolakeBoardPkg/Script/StitchLoader.py -i <Existing IFWI> -s Outputs/apl/Stitch_Components.zip -o <Output IFWI>

	5. Flash IFWI.

	Use DediProg to flash IFWI. You should reach at U-Boot serial console.


	Build Instruction to use ELF U-Boot
	-----------------------------------

	1. Enable CONFIG_OF_EMBED::

	$ vi configs/slimbootloader_defconfig
	+CONFIG_OF_EMBED=y

	2. Build U-Boot::

	$ make distclean
	$ make slimbootloader_defconfig
	$ make all
	$ strip u-boot (removing symbol for reduced size)

	3. Do same steps as above

	* Copy u-boot (ELF) to PayloadBins directory
	* Update PayloadId 'U-BT' as above.
	* No need to set PAYLOAD_LOAD_HIGH and PAYLOAD_EXE_BASE.
	* Build Slim Bootloader. Use u-boot instead of u-boot-dtb.bin::

	$ python BuildLoader.py build <qemu or apl> -p "OsLoader.efi:LLDR:Lz4;u-boot:U-BT:Lzma"

	.. _U-Boot: https://source.denx.de/
	.. _`Slim Bootloader`: https://github.com/slimbootloader/
	.. _`Intel FSP`: https://github.com/IntelFsp/
	.. _`Getting Started`: https://slimbootloader.github.io/getting-started/
	.. _Apollolake: https://slimbootloader.github.io/supported-hardware/apollo-lake-crb.html#stitching