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- menu "SPL / TPL"
- config SUPPORT_SPL
- bool
- config SUPPORT_TPL
- bool
- config SPL_DFU_NO_RESET
- bool
- config SPL
- bool
- depends on SUPPORT_SPL
- prompt "Enable SPL"
- help
- If you want to build SPL as well as the normal image, say Y.
- config SPL_FRAMEWORK
- bool "Support SPL based upon the common SPL framework"
- depends on SPL
- default y
- help
- Enable the SPL framework under common/spl/. This framework
- supports MMC, NAND and YMODEM and other methods loading of U-Boot
- and the Linux Kernel. If unsure, say Y.
- if SPL
- config SPL_LDSCRIPT
- string "Linker script for the SPL stage"
- default "arch/$(ARCH)/cpu/u-boot-spl.lds"
- help
- The SPL stage will usually require a different linker-script
- (as it runs from a different memory region) than the regular
- U-Boot stage. Set this to the path of the linker-script to
- be used for SPL.
- config SPL_BOARD_INIT
- bool "Call board-specific initialization in SPL"
- help
- If this option is enabled, U-Boot will call the function
- spl_board_init() from board_init_r(). This function should be
- provided by the board.
- config SPL_BOOTROM_SUPPORT
- bool "Support returning to the BOOTROM"
- help
- Some platforms (e.g. the Rockchip RK3368) provide support in their
- ROM for loading the next boot-stage after performing basic setup
- from the SPL stage.
- Enable this option, to return to the BOOTROM through the
- BOOT_DEVICE_BOOTROM (or fall-through to the next boot device in the
- boot device list, if not implemented for a given board)
- config SPL_BOOTCOUNT_LIMIT
- bool "Support bootcount in SPL"
- depends on SPL_ENV_SUPPORT
- help
- On some boards, which use 'falcon' mode, it is necessary to check
- and increment the number of boot attempts. Such boards do not
- use proper U-Boot for normal boot flow and hence needs those
- adjustments to be done in the SPL.
- config SPL_RAW_IMAGE_SUPPORT
- bool "Support SPL loading and booting of RAW images"
- default n if (ARCH_MX6 && (SPL_MMC_SUPPORT || SPL_SATA_SUPPORT))
- default y if !TI_SECURE_DEVICE
- help
- SPL will support loading and booting a RAW image when this option
- is y. If this is not set, SPL will move on to other available
- boot media to find a suitable image.
- config SPL_LEGACY_IMAGE_SUPPORT
- bool "Support SPL loading and booting of Legacy images"
- default y if !TI_SECURE_DEVICE
- help
- SPL will support loading and booting Legacy images when this option
- is y. If this is not set, SPL will move on to other available
- boot media to find a suitable image.
- config SPL_SYS_MALLOC_SIMPLE
- bool
- prompt "Only use malloc_simple functions in the SPL"
- help
- Say Y here to only use the *_simple malloc functions from
- malloc_simple.c, rather then using the versions from dlmalloc.c;
- this will make the SPL binary smaller at the cost of more heap
- usage as the *_simple malloc functions do not re-use free-ed mem.
- config TPL_SYS_MALLOC_SIMPLE
- bool
- prompt "Only use malloc_simple functions in the TPL"
- help
- Say Y here to only use the *_simple malloc functions from
- malloc_simple.c, rather then using the versions from dlmalloc.c;
- this will make the TPL binary smaller at the cost of more heap
- usage as the *_simple malloc functions do not re-use free-ed mem.
- config SPL_STACK_R
- bool "Enable SDRAM location for SPL stack"
- help
- SPL starts off execution in SRAM and thus typically has only a small
- stack available. Since SPL sets up DRAM while in its board_init_f()
- function, it is possible for the stack to move there before
- board_init_r() is reached. This option enables a special SDRAM
- location for the SPL stack. U-Boot SPL switches to this after
- board_init_f() completes, and before board_init_r() starts.
- config SPL_STACK_R_ADDR
- depends on SPL_STACK_R
- hex "SDRAM location for SPL stack"
- default 0x82000000 if ARCH_OMAP2PLUS
- help
- Specify the address in SDRAM for the SPL stack. This will be set up
- before board_init_r() is called.
- config SPL_STACK_R_MALLOC_SIMPLE_LEN
- depends on SPL_STACK_R && SPL_SYS_MALLOC_SIMPLE
- hex "Size of malloc_simple heap after switching to DRAM SPL stack"
- default 0x100000
- help
- Specify the amount of the stack to use as memory pool for
- malloc_simple after switching the stack to DRAM. This may be set
- to give board_init_r() a larger heap then the initial heap in
- SRAM which is limited to SYS_MALLOC_F_LEN bytes.
- config SPL_SEPARATE_BSS
- bool "BSS section is in a different memory region from text"
- help
- Some platforms need a large BSS region in SPL and can provide this
- because RAM is already set up. In this case BSS can be moved to RAM.
- This option should then be enabled so that the correct device tree
- location is used. Normally we put the device tree at the end of BSS
- but with this option enabled, it goes at _image_binary_end.
- config SPL_DISABLE_BANNER_PRINT
- bool "Disable output of the SPL banner 'U-Boot SPL ...'"
- help
- If this option is enabled, SPL will not print the banner with version
- info. Selecting this option could be useful to reduce SPL boot time
- (e.g. approx. 6 ms slower, when output on i.MX6 with 115200 baud).
- config SPL_DISPLAY_PRINT
- bool "Display a board-specific message in SPL"
- help
- If this option is enabled, U-Boot will call the function
- spl_display_print() immediately after displaying the SPL console
- banner ("U-Boot SPL ..."). This function should be provided by
- the board.
- config SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR
- bool "MMC raw mode: by sector"
- default y if ARCH_SUNXI || ARCH_DAVINCI || ARCH_UNIPHIER || \
- ARCH_MX6 || ARCH_MX7 || \
- ARCH_ROCKCHIP || ARCH_MVEBU || ARCH_SOCFPGA || \
- ARCH_AT91 || ARCH_ZYNQ || ARCH_KEYSTONE || OMAP34XX || \
- OMAP44XX || OMAP54XX || AM33XX || AM43XX
- help
- Use sector number for specifying U-Boot location on MMC/SD in
- raw mode.
- config SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR
- hex "Address on the MMC to load U-Boot from"
- depends on SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR
- default 0x50 if ARCH_SUNXI
- default 0x75 if ARCH_DAVINCI
- default 0x8a if ARCH_MX6 || ARCH_MX7
- default 0x100 if ARCH_UNIPHIER
- default 0x140 if ARCH_MVEBU
- default 0x200 if ARCH_SOCFPGA || ARCH_AT91
- default 0x300 if ARCH_ZYNQ || ARCH_KEYSTONE || OMAP34XX || OMAP44XX || \
- OMAP54XX || AM33XX || AM43XX || ARCH_K3
- default 0x4000 if ARCH_ROCKCHIP
- help
- Address on the MMC to load U-Boot from, when the MMC is being used
- in raw mode. Units: MMC sectors (1 sector = 512 bytes).
- config SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION
- bool "MMC Raw mode: by partition"
- help
- Use a partition for loading U-Boot when using MMC/SD in raw mode.
- config SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION
- hex "Partition to use to load U-Boot from"
- depends on SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION
- default 1
- help
- Partition on the MMC to load U-Boot from when the MMC is being
- used in raw mode
- config SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION_TYPE
- bool "MMC raw mode: by partition type"
- depends on DOS_PARTITION && SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION
- help
- Use partition type for specifying U-Boot partition on MMC/SD in
- raw mode. U-Boot will be loaded from the first partition of this
- type to be found.
- config SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION_TYPE
- hex "Partition Type on the MMC to load U-Boot from"
- depends on SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION_TYPE
- help
- Partition Type on the MMC to load U-Boot from, when the MMC is being
- used in raw mode.
- config SPL_CRC32_SUPPORT
- bool "Support CRC32"
- depends on SPL_FIT
- help
- Enable this to support CRC32 in FIT images within SPL. This is a
- 32-bit checksum value that can be used to verify images. This is
- the least secure type of checksum, suitable for detected
- accidental image corruption. For secure applications you should
- consider SHA1 or SHA256.
- config SPL_MD5_SUPPORT
- bool "Support MD5"
- depends on SPL_FIT
- help
- Enable this to support MD5 in FIT images within SPL. An MD5
- checksum is a 128-bit hash value used to check that the image
- contents have not been corrupted. Note that MD5 is not considered
- secure as it is possible (with a brute-force attack) to adjust the
- image while still retaining the same MD5 hash value. For secure
- applications where images may be changed maliciously, you should
- consider SHA1 or SHA256.
- config SPL_SHA1_SUPPORT
- bool "Support SHA1"
- depends on SPL_FIT
- select SHA1
- help
- Enable this to support SHA1 in FIT images within SPL. A SHA1
- checksum is a 160-bit (20-byte) hash value used to check that the
- image contents have not been corrupted or maliciously altered.
- While SHA1 is fairly secure it is coming to the end of its life
- due to the expanding computing power avaiable to brute-force
- attacks. For more security, consider SHA256.
- config SPL_SHA256_SUPPORT
- bool "Support SHA256"
- depends on SPL_FIT
- select SHA256
- help
- Enable this to support SHA256 in FIT images within SPL. A SHA256
- checksum is a 256-bit (32-byte) hash value used to check that the
- image contents have not been corrupted. SHA256 is recommended for
- use in secure applications since (as at 2016) there is no known
- feasible attack that could produce a 'collision' with differing
- input data. Use this for the highest security. Note that only the
- SHA256 variant is supported: SHA512 and others are not currently
- supported in U-Boot.
- config SPL_FIT_IMAGE_TINY
- bool "Remove functionality from SPL FIT loading to reduce size"
- depends on SPL_FIT
- default y if MACH_SUN50I || MACH_SUN50I_H5 || MACH_SUN50I_H6
- help
- Enable this to reduce the size of the FIT image loading code
- in SPL, if space for the SPL binary is very tight.
- This removes the detection of image types (which forces the
- first image to be treated as having a U-Boot style calling
- convention) and skips the recording of each loaded payload
- (i.e. loadable) into the FDT (modifying the loaded FDT to
- ensure this information is available to the next image
- invoked).
- config SPL_CPU_SUPPORT
- bool "Support CPU drivers"
- help
- Enable this to support CPU drivers in SPL. These drivers can set
- up CPUs and provide information about them such as the model and
- name. This can be useful in SPL since setting up the CPUs earlier
- may improve boot performance. Enable this option to build the
- drivers in drivers/cpu as part of an SPL build.
- config SPL_CRYPTO_SUPPORT
- bool "Support crypto drivers"
- help
- Enable crypto drivers in SPL. These drivers can be used to
- accelerate secure boot processing in secure applications. Enable
- this option to build the drivers in drivers/crypto as part of an
- SPL build.
- config SPL_HASH_SUPPORT
- bool "Support hashing drivers"
- select SHA1
- select SHA256
- help
- Enable hashing drivers in SPL. These drivers can be used to
- accelerate secure boot processing in secure applications. Enable
- this option to build system-specific drivers for hash acceleration
- as part of an SPL build.
- config SPL_DMA_SUPPORT
- bool "Support DMA drivers"
- help
- Enable DMA (direct-memory-access) drivers in SPL. These drivers
- can be used to handle memory-to-peripheral data transfer without
- the CPU moving the data. Enable this option to build the drivers
- in drivers/dma as part of an SPL build.
- config SPL_DRIVERS_MISC_SUPPORT
- bool "Support misc drivers"
- help
- Enable miscellaneous drivers in SPL. These drivers perform various
- tasks that don't fall nicely into other categories, Enable this
- option to build the drivers in drivers/misc as part of an SPL
- build, for those that support building in SPL (not all drivers do).
- config SPL_ENV_SUPPORT
- bool "Support an environment"
- help
- Enable environment support in SPL. The U-Boot environment provides
- a number of settings (essentially name/value pairs) which can
- control many aspects of U-Boot's operation. Normally this is not
- needed in SPL as it has a much simpler task with less
- configuration. But some boards use this to support 'Falcon' boot
- on EXT2 and FAT, where SPL boots directly into Linux without
- starting U-Boot first. Enabling this option will make env_get()
- and env_set() available in SPL.
- config SPL_SAVEENV
- bool "Support save environment"
- depends on SPL_ENV_SUPPORT
- select SPL_MMC_WRITE if ENV_IS_IN_MMC
- help
- Enable save environment support in SPL after setenv. By default
- the saveenv option is not provided in SPL, but some boards need
- this support in 'Falcon' boot, where SPL need to boot from
- different images based on environment variable set by OS. For
- example OS may set "reboot_image" environment variable to
- "recovery" inorder to boot recovery image by SPL. The SPL read
- "reboot_image" and act accordingly and change the reboot_image
- to default mode using setenv and save the environment.
- config SPL_ETH_SUPPORT
- bool "Support Ethernet"
- depends on SPL_ENV_SUPPORT
- help
- Enable access to the network subsystem and associated Ethernet
- drivers in SPL. This permits SPL to load U-Boot over an Ethernet
- link rather than from an on-board peripheral. Environment support
- is required since the network stack uses a number of environment
- variables. See also SPL_NET_SUPPORT.
- config SPL_EXT_SUPPORT
- bool "Support EXT filesystems"
- help
- Enable support for EXT2/3/4 filesystems with SPL. This permits
- U-Boot (or Linux in Falcon mode) to be loaded from an EXT
- filesystem from within SPL. Support for the underlying block
- device (e.g. MMC or USB) must be enabled separately.
- config SPL_FAT_SUPPORT
- bool "Support FAT filesystems"
- select FS_FAT
- help
- Enable support for FAT and VFAT filesystems with SPL. This
- permits U-Boot (or Linux in Falcon mode) to be loaded from a FAT
- filesystem from within SPL. Support for the underlying block
- device (e.g. MMC or USB) must be enabled separately.
- config SPL_FPGA_SUPPORT
- bool "Support FPGAs"
- help
- Enable support for FPGAs in SPL. Field-programmable Gate Arrays
- provide software-configurable hardware which is typically used to
- implement peripherals (such as UARTs, LCD displays, MMC) or
- accelerate custom processing functions, such as image processing
- or machine learning. Sometimes it is useful to program the FPGA
- as early as possible during boot, and this option can enable that
- within SPL.
- config SPL_GPIO_SUPPORT
- bool "Support GPIO"
- help
- Enable support for GPIOs (General-purpose Input/Output) in SPL.
- GPIOs allow U-Boot to read the state of an input line (high or
- low) and set the state of an output line. This can be used to
- drive LEDs, control power to various system parts and read user
- input. GPIOs can be useful in SPL to enable a 'sign-of-life' LED,
- for example. Enable this option to build the drivers in
- drivers/gpio as part of an SPL build.
- config SPL_I2C_SUPPORT
- bool "Support I2C"
- help
- Enable support for the I2C (Inter-Integrated Circuit) bus in SPL.
- I2C works with a clock and data line which can be driven by a
- one or more masters or slaves. It is a fairly complex bus but is
- widely used as it only needs two lines for communication. Speeds of
- 400kbps are typical but up to 3.4Mbps is supported by some
- hardware. I2C can be useful in SPL to configure power management
- ICs (PMICs) before raising the CPU clock speed, for example.
- Enable this option to build the drivers in drivers/i2c as part of
- an SPL build.
- config SPL_LIBCOMMON_SUPPORT
- bool "Support common libraries"
- help
- Enable support for common U-Boot libraries within SPL. These
- libraries include common code to deal with U-Boot images,
- environment and USB, for example. This option is enabled on many
- boards. Enable this option to build the code in common/ as part of
- an SPL build.
- config SPL_LIBDISK_SUPPORT
- bool "Support disk partitions"
- help
- Enable support for disk partitions within SPL. 'Disk' is something
- of a misnomer as it includes non-spinning media such as flash (as
- used in MMC and USB sticks). Partitions provide a way for a disk
- to be split up into separate regions, with a partition table placed
- at the start or end which describes the location and size of each
- 'partition'. These partitions are typically uses as individual block
- devices, typically with an EXT2 or FAT filesystem in each. This
- option enables whatever partition support has been enabled in
- U-Boot to also be used in SPL. It brings in the code in disk/.
- config SPL_LIBGENERIC_SUPPORT
- bool "Support generic libraries"
- help
- Enable support for generic U-Boot libraries within SPL. These
- libraries include generic code to deal with device tree, hashing,
- printf(), compression and the like. This option is enabled on many
- boards. Enable this option to build the code in lib/ as part of an
- SPL build.
- config SPL_DM_MAILBOX
- bool "Support Mailbox"
- help
- Enable support for Mailbox within SPL. This enable the inter
- processor communication protocols tobe used within SPL. Enable
- this option to build the drivers in drivers/mailbox as part of
- SPL build.
- config SPL_MMC_SUPPORT
- bool "Support MMC"
- depends on MMC
- help
- Enable support for MMC (Multimedia Card) within SPL. This enables
- the MMC protocol implementation and allows any enabled drivers to
- be used within SPL. MMC can be used with or without disk partition
- support depending on the application (SPL_LIBDISK_SUPPORT). Enable
- this option to build the drivers in drivers/mmc as part of an SPL
- build.
- config SPL_MMC_WRITE
- bool "MMC/SD/SDIO card support for write operations in SPL"
- depends on SPL_MMC_SUPPORT
- default n
- help
- Enable write access to MMC and SD Cards in SPL
- config SPL_MPC8XXX_INIT_DDR_SUPPORT
- bool "Support MPC8XXX DDR init"
- help
- Enable support for DDR-SDRAM (double-data-rate synchronous dynamic
- random-access memory) on the MPC8XXX family within SPL. This
- allows DRAM to be set up before loading U-Boot into that DRAM,
- where it can run.
- config SPL_MTD_SUPPORT
- bool "Support MTD drivers"
- help
- Enable support for MTD (Memory Technology Device) within SPL. MTD
- provides a block interface over raw NAND and can also be used with
- SPI flash. This allows SPL to load U-Boot from supported MTD
- devices. See SPL_NAND_SUPPORT and SPL_ONENAND_SUPPORT for how
- to enable specific MTD drivers.
- config SPL_MUSB_NEW_SUPPORT
- bool "Support new Mentor Graphics USB"
- help
- Enable support for Mentor Graphics USB in SPL. This is a new
- driver used by some boards. Enable this option to build
- the drivers in drivers/usb/musb-new as part of an SPL build. The
- old drivers are in drivers/usb/musb.
- config SPL_NAND_SUPPORT
- bool "Support NAND flash"
- help
- Enable support for NAND (Negative AND) flash in SPL. NAND flash
- can be used to allow SPL to load U-Boot from supported devices.
- This enables the drivers in drivers/mtd/nand/raw as part of an SPL
- build.
- config SPL_NET_SUPPORT
- bool "Support networking"
- help
- Enable support for network devices (such as Ethernet) in SPL.
- This permits SPL to load U-Boot over a network link rather than
- from an on-board peripheral. Environment support is required since
- the network stack uses a number of environment variables. See also
- SPL_ETH_SUPPORT.
- if SPL_NET_SUPPORT
- config SPL_NET_VCI_STRING
- string "BOOTP Vendor Class Identifier string sent by SPL"
- help
- As defined by RFC 2132 the vendor class identifier field can be
- sent by the client to identify the vendor type and configuration
- of a client. This is often used in practice to allow for the DHCP
- server to specify different files to load depending on if the ROM,
- SPL or U-Boot itself makes the request
- endif # if SPL_NET_SUPPORT
- config SPL_NO_CPU_SUPPORT
- bool "Drop CPU code in SPL"
- help
- This is specific to the ARM926EJ-S CPU. It disables the standard
- start.S start-up code, presumably so that a replacement can be
- used on that CPU. You should not enable it unless you know what
- you are doing.
- config SPL_NOR_SUPPORT
- bool "Support NOR flash"
- help
- Enable support for loading U-Boot from memory-mapped NOR (Negative
- OR) flash in SPL. NOR flash is slow to write but fast to read, and
- a memory-mapped device makes it very easy to access. Loading from
- NOR is typically achieved with just a memcpy().
- config SPL_XIP_SUPPORT
- bool "Support XIP"
- depends on SPL
- help
- Enable support for execute in place of U-Boot or kernel image. There
- is no need to copy image from flash to ram if flash supports execute
- in place. Its very useful in systems having enough flash but not
- enough ram to load the image.
- config SPL_ONENAND_SUPPORT
- bool "Support OneNAND flash"
- help
- Enable support for OneNAND (Negative AND) flash in SPL. OneNAND is
- a type of NAND flash and therefore can be used to allow SPL to
- load U-Boot from supported devices. This enables the drivers in
- drivers/mtd/onenand as part of an SPL build.
- config SPL_OS_BOOT
- bool "Activate Falcon Mode"
- depends on !TI_SECURE_DEVICE
- default n
- help
- Enable booting directly to an OS from SPL.
- for more info read doc/README.falcon
- if SPL_OS_BOOT
- config SYS_OS_BASE
- hex "addr, where OS is found"
- depends on SPL_NOR_SUPPORT
- help
- Specify the address, where the OS image is found, which
- gets booted.
- endif # SPL_OS_BOOT
- config SPL_PAYLOAD
- string "SPL payload"
- default "tpl/u-boot-with-tpl.bin" if TPL
- default "u-boot.bin"
- help
- Payload for SPL boot. For backward compability, default to
- u-boot.bin, i.e. RAW image without any header. In case of
- TPL, tpl/u-boot-with-tpl.bin. For new boards, suggest to
- use u-boot.img.
- config SPL_PCI_SUPPORT
- bool "Support PCI drivers"
- help
- Enable support for PCI in SPL. For platforms that need PCI to boot,
- or must perform some init using PCI in SPL, this provides the
- necessary driver support. This enables the drivers in drivers/pci
- as part of an SPL build.
- config SPL_PCH_SUPPORT
- bool "Support PCH drivers"
- help
- Enable support for PCH (Platform Controller Hub) devices in SPL.
- These are used to set up GPIOs and the SPI peripheral early in
- boot. This enables the drivers in drivers/pch as part of an SPL
- build.
- config SPL_POST_MEM_SUPPORT
- bool "Support POST drivers"
- help
- Enable support for POST (Power-on Self Test) in SPL. POST is a
- procedure that checks that the hardware (CPU or board) appears to
- be functionally correctly. It is a sanity check that can be
- performed before booting. This enables the drivers in post/drivers
- as part of an SPL build.
- config SPL_DM_RESET
- bool "Support reset drivers"
- depends on SPL
- help
- Enable support for reset control in SPL.
- That can be useful in SPL to handle IP reset in driver, as in U-Boot,
- by using the generic reset API provided by driver model.
- This enables the drivers in drivers/reset as part of an SPL build.
- config SPL_POWER_SUPPORT
- bool "Support power drivers"
- help
- Enable support for power control in SPL. This includes support
- for PMICs (Power-management Integrated Circuits) and some of the
- features provided by PMICs. In particular, voltage regulators can
- be used to enable/disable power and vary its voltage. That can be
- useful in SPL to turn on boot peripherals and adjust CPU voltage
- so that the clock speed can be increased. This enables the drivers
- in drivers/power, drivers/power/pmic and drivers/power/regulator
- as part of an SPL build.
- config SPL_POWER_DOMAIN
- bool "Support power domain drivers"
- help
- Enable support for power domain control in SPL. Many SoCs allow
- power to be applied to or removed from portions of the SoC (power
- domains). This may be used to save power. This API provides the
- means to control such power management hardware. This enables
- the drivers in drivers/power/domain as part of a SPL build.
- config SPL_RAM_SUPPORT
- bool "Support booting from RAM"
- default y if MICROBLAZE || ARCH_SOCFPGA || TEGRA || ARCH_ZYNQ
- help
- Enable booting of an image in RAM. The image can be preloaded or
- it can be loaded by SPL directly into RAM (e.g. using USB).
- config SPL_RAM_DEVICE
- bool "Support booting from preloaded image in RAM"
- depends on SPL_RAM_SUPPORT
- default y if MICROBLAZE || ARCH_SOCFPGA || TEGRA || ARCH_ZYNQ
- help
- Enable booting of an image already loaded in RAM. The image has to
- be already in memory when SPL takes over, e.g. loaded by the boot
- ROM.
- config SPL_REMOTEPROC
- bool "Support REMOTEPROCS"
- help
- Enable support for REMOTEPROCs in SPL. This permits to load
- a remote processor firmware in SPL.
- config SPL_RTC_SUPPORT
- bool "Support RTC drivers"
- help
- Enable RTC (Real-time Clock) support in SPL. This includes support
- for reading and setting the time. Some RTC devices also have some
- non-volatile (battery-backed) memory which is accessible if
- needed. This enables the drivers in drivers/rtc as part of an SPL
- build.
- config SPL_SATA_SUPPORT
- bool "Support loading from SATA"
- help
- Enable support for SATA (Serial AT attachment) in SPL. This allows
- use of SATA devices such as hard drives and flash drivers for
- loading U-Boot. SATA is used in higher-end embedded systems and
- can provide higher performance than MMC , at somewhat higher
- expense and power consumption. This enables loading from SATA
- using a configured device.
- config SPL_SERIAL_SUPPORT
- bool "Support serial"
- select SPL_PRINTF
- select SPL_STRTO
- help
- Enable support for serial in SPL. This allows use of a serial UART
- for displaying messages while SPL is running. It also brings in
- printf() and panic() functions. This should normally be enabled
- unless there are space reasons not to. Even then, consider
- enabling USE_TINY_PRINTF which is a small printf() version.
- config SPL_SPI_FLASH_SUPPORT
- bool "Support SPI flash drivers"
- help
- Enable support for using SPI flash in SPL, and loading U-Boot from
- SPI flash. SPI flash (Serial Peripheral Bus flash) is named after
- the SPI bus that is used to connect it to a system. It is a simple
- but fast bidirectional 4-wire bus (clock, chip select and two data
- lines). This enables the drivers in drivers/mtd/spi as part of an
- SPL build. This normally requires SPL_SPI_SUPPORT.
- config SPL_SPI_LOAD
- bool "Support loading from SPI flash"
- depends on SPL_SPI_FLASH_SUPPORT
- help
- Enable support for loading next stage, U-Boot or otherwise, from
- SPI NOR in U-Boot SPL.
- config SPL_SPI_SUPPORT
- bool "Support SPI drivers"
- help
- Enable support for using SPI in SPL. This is used for connecting
- to SPI flash for loading U-Boot. See SPL_SPI_FLASH_SUPPORT for
- more details on that. The SPI driver provides the transport for
- data between the SPI flash and the CPU. This option can be used to
- enable SPI drivers that are needed for other purposes also, such
- as a SPI PMIC.
- config SPL_THERMAL
- bool "Driver support for thermal devices"
- help
- Enable support for temperature-sensing devices. Some SoCs have on-chip
- temperature sensors to permit warnings, speed throttling or even
- automatic power-off when the temperature gets too high or low. Other
- devices may be discrete but connected on a suitable bus.
- config SPL_USB_HOST_SUPPORT
- bool "Support USB host drivers"
- help
- Enable access to USB (Universal Serial Bus) host devices so that
- SPL can load U-Boot from a connected USB peripheral, such as a USB
- flash stick. While USB takes a little longer to start up than most
- buses, it is very flexible since many different types of storage
- device can be attached. This option enables the drivers in
- drivers/usb/host as part of an SPL build.
- config SPL_USB_SUPPORT
- bool "Support loading from USB"
- depends on SPL_USB_HOST_SUPPORT
- help
- Enable support for USB devices in SPL. This allows use of USB
- devices such as hard drives and flash drivers for loading U-Boot.
- The actual drivers are enabled separately using the normal U-Boot
- config options. This enables loading from USB using a configured
- device.
- config SPL_USB_GADGET_SUPPORT
- bool "Suppport USB Gadget drivers"
- help
- Enable USB Gadget API which allows to enable USB device functions
- in SPL.
- if SPL_USB_GADGET_SUPPORT
- config SPL_USB_ETHER
- bool "Support USB Ethernet drivers"
- help
- Enable access to the USB network subsystem and associated
- drivers in SPL. This permits SPL to load U-Boot over a
- USB-connected Ethernet link (such as a USB Ethernet dongle) rather
- than from an onboard peripheral. Environment support is required
- since the network stack uses a number of environment variables.
- See also SPL_NET_SUPPORT and SPL_ETH_SUPPORT.
- config SPL_DFU_SUPPORT
- bool "Support DFU (Device Firmware Upgrade)"
- select SPL_HASH_SUPPORT
- select SPL_DFU_NO_RESET
- depends on SPL_RAM_SUPPORT
- help
- This feature enables the DFU (Device Firmware Upgrade) in SPL with
- RAM memory device support. The ROM code will load and execute
- the SPL built with dfu. The user can load binaries (u-boot/kernel) to
- selected device partition from host-pc using dfu-utils.
- This feature is useful to flash the binaries to factory or bare-metal
- boards using USB interface.
- choice
- bool "DFU device selection"
- depends on SPL_DFU_SUPPORT
- config SPL_DFU_RAM
- bool "RAM device"
- depends on SPL_DFU_SUPPORT && SPL_RAM_SUPPORT
- help
- select RAM/DDR memory device for loading binary images
- (u-boot/kernel) to the selected device partition using
- DFU and execute the u-boot/kernel from RAM.
- endchoice
- config SPL_USB_SDP_SUPPORT
- bool "Support SDP (Serial Download Protocol)"
- help
- Enable Serial Download Protocol (SDP) device support in SPL. This
- allows to download images into memory and execute (jump to) them
- using the same protocol as implemented by the i.MX family's boot ROM.
- endif
- config SPL_WATCHDOG_SUPPORT
- bool "Support watchdog drivers"
- help
- Enable support for watchdog drivers in SPL. A watchdog is
- typically a hardware peripheral which can reset the system when it
- detects no activity for a while (such as a software crash). This
- enables the drivers in drivers/watchdog as part of an SPL build.
- config SPL_YMODEM_SUPPORT
- bool "Support loading using Ymodem"
- depends on SPL_SERIAL_SUPPORT
- help
- While loading from serial is slow it can be a useful backup when
- there is no other option. The Ymodem protocol provides a reliable
- means of transmitting U-Boot over a serial line for using in SPL,
- with a checksum to ensure correctness.
- config SPL_ATF
- bool "Support ARM Trusted Firmware"
- depends on ARM64
- help
- ATF(ARM Trusted Firmware) is a component for ARM AArch64 which
- is loaded by SPL (which is considered as BL2 in ATF terminology).
- More detail at: https://github.com/ARM-software/arm-trusted-firmware
- config SPL_ATF_NO_PLATFORM_PARAM
- bool "Pass no platform parameter"
- depends on SPL_ATF
- help
- While we expect to call a pointer to a valid FDT (or NULL)
- as the platform parameter to an ATF, some ATF versions are
- not U-Boot aware and have an insufficiently robust parameter
- validation to gracefully reject a FDT being passed.
- If this option is enabled, the spl_atf os-type handler will
- always pass NULL for the platform parameter.
- If your ATF is affected, say Y.
- config SPL_AM33XX_ENABLE_RTC32K_OSC
- bool "Enable the RTC32K OSC on AM33xx based platforms"
- default y if AM33XX
- help
- Enable access to the AM33xx RTC and select the external 32kHz clock
- source.
- config TPL
- bool
- depends on SUPPORT_TPL
- prompt "Enable TPL"
- help
- If you want to build TPL as well as the normal image and SPL, say Y.
- if TPL
- config TPL_BOARD_INIT
- bool "Call board-specific initialization in TPL"
- help
- If this option is enabled, U-Boot will call the function
- spl_board_init() from board_init_r(). This function should be
- provided by the board.
- config TPL_LDSCRIPT
- string "Linker script for the TPL stage"
- depends on TPL
- help
- The TPL stage will usually require a different linker-script
- (as it runs from a different memory region) than the regular
- U-Boot stage. Set this to the path of the linker-script to
- be used for TPL.
- May be left empty to trigger the Makefile infrastructure to
- fall back to the linker-script used for the SPL stage.
- config TPL_NEEDS_SEPARATE_TEXT_BASE
- bool "TPL needs a separate text-base"
- default n
- depends on TPL
- help
- Enable, if the TPL stage should not inherit its text-base
- from the SPL stage. When enabled, a base address for the
- .text sections of the TPL stage has to be set below.
- config TPL_NEEDS_SEPARATE_STACK
- bool "TPL needs a separate initial stack-pointer"
- default n
- depends on TPL
- help
- Enable, if the TPL stage should not inherit its initial
- stack-pointer from the settings for the SPL stage.
- config TPL_TEXT_BASE
- hex "Base address for the .text section of the TPL stage"
- depends on TPL_NEEDS_SEPARATE_TEXT_BASE
- help
- The base address for the .text section of the TPL stage.
- config TPL_MAX_SIZE
- int "Maximum size (in bytes) for the TPL stage"
- default 0
- depends on TPL
- help
- The maximum size (in bytes) of the TPL stage.
- config TPL_STACK
- hex "Address of the initial stack-pointer for the TPL stage"
- depends on TPL_NEEDS_SEPARATE_STACK
- help
- The address of the initial stack-pointer for the TPL stage.
- Usually this will be the (aligned) top-of-stack.
- config TPL_BOOTROM_SUPPORT
- bool "Support returning to the BOOTROM (from TPL)"
- help
- Some platforms (e.g. the Rockchip RK3368) provide support in their
- ROM for loading the next boot-stage after performing basic setup
- from the TPL stage.
- Enable this option, to return to the BOOTROM through the
- BOOT_DEVICE_BOOTROM (or fall-through to the next boot device in the
- boot device list, if not implemented for a given board)
- config TPL_DRIVERS_MISC_SUPPORT
- bool "Support misc drivers in TPL"
- help
- Enable miscellaneous drivers in TPL. These drivers perform various
- tasks that don't fall nicely into other categories, Enable this
- option to build the drivers in drivers/misc as part of an TPL
- build, for those that support building in TPL (not all drivers do).
- config TPL_ENV_SUPPORT
- bool "Support an environment"
- help
- Enable environment support in TPL. See SPL_ENV_SUPPORT for details.
- config TPL_I2C_SUPPORT
- bool "Support I2C"
- help
- Enable support for the I2C bus in TPL. See SPL_I2C_SUPPORT for
- details.
- config TPL_LIBCOMMON_SUPPORT
- bool "Support common libraries"
- help
- Enable support for common U-Boot libraries within TPL. See
- SPL_LIBCOMMON_SUPPORT for details.
- config TPL_LIBGENERIC_SUPPORT
- bool "Support generic libraries"
- help
- Enable support for generic U-Boot libraries within TPL. See
- SPL_LIBGENERIC_SUPPORT for details.
- config TPL_MPC8XXX_INIT_DDR_SUPPORT
- bool "Support MPC8XXX DDR init"
- help
- Enable support for DDR-SDRAM on the MPC8XXX family within TPL. See
- SPL_MPC8XXX_INIT_DDR_SUPPORT for details.
- config TPL_MMC_SUPPORT
- bool "Support MMC"
- depends on MMC
- help
- Enable support for MMC within TPL. See SPL_MMC_SUPPORT for details.
- config TPL_NAND_SUPPORT
- bool "Support NAND flash"
- help
- Enable support for NAND in TPL. See SPL_NAND_SUPPORT for details.
- config TPL_RAM_SUPPORT
- bool "Support booting from RAM"
- help
- Enable booting of an image in RAM. The image can be preloaded or
- it can be loaded by TPL directly into RAM (e.g. using USB).
- config TPL_RAM_DEVICE
- bool "Support booting from preloaded image in RAM"
- depends on TPL_RAM_SUPPORT
- help
- Enable booting of an image already loaded in RAM. The image has to
- be already in memory when TPL takes over, e.g. loaded by the boot
- ROM.
- config TPL_SERIAL_SUPPORT
- bool "Support serial"
- select TPL_PRINTF
- select TPL_STRTO
- help
- Enable support for serial in TPL. See SPL_SERIAL_SUPPORT for
- details.
- config TPL_SPI_FLASH_SUPPORT
- bool "Support SPI flash drivers"
- help
- Enable support for using SPI flash in TPL. See SPL_SPI_FLASH_SUPPORT
- for details.
- config TPL_SPI_LOAD
- bool "Support loading from SPI flash"
- depends on TPL_SPI_FLASH_SUPPORT
- help
- Enable support for loading next stage, U-Boot or otherwise, from
- SPI NOR in U-Boot TPL.
- config TPL_SPI_SUPPORT
- bool "Support SPI drivers"
- help
- Enable support for using SPI in TPL. See SPL_SPI_SUPPORT for
- details.
- config TPL_YMODEM_SUPPORT
- bool "Support loading using Ymodem"
- depends on TPL_SERIAL_SUPPORT
- help
- While loading from serial is slow it can be a useful backup when
- there is no other option. The Ymodem protocol provides a reliable
- means of transmitting U-Boot over a serial line for using in TPL,
- with a checksum to ensure correctness.
- endif # TPL
- endif # SPL
- endmenu
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