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![B, Ravi](/assets/img/avatar_default.png)
By default saveenv option is not supported for SPL. This patch enable the support for save environment variable for SPL build. 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 environemnt. Signed-off-by: Ravi Babu <ravibabu@ti.com> Reviewed-by: Simon Glass <sig@chromium.org> change in v1: - dropped SUPPORT, use CONFIG_SPL_SAVEENV - updates the comments in mmc_private.h
568 lines
20 KiB
Plaintext
568 lines
20 KiB
Plaintext
menu "SPL / TPL"
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config SUPPORT_SPL
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bool
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config SUPPORT_TPL
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bool
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config SPL
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bool
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depends on SUPPORT_SPL
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prompt "Enable SPL"
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help
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If you want to build SPL as well as the normal image, say Y.
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config SPL_SYS_MALLOC_SIMPLE
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bool
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depends on SPL
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prompt "Only use malloc_simple functions in the SPL"
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help
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Say Y here to only use the *_simple malloc functions from
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malloc_simple.c, rather then using the versions from dlmalloc.c;
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this will make the SPL binary smaller at the cost of more heap
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usage as the *_simple malloc functions do not re-use free-ed mem.
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config SPL_STACK_R
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depends on SPL
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bool "Enable SDRAM location for SPL stack"
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help
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SPL starts off execution in SRAM and thus typically has only a small
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stack available. Since SPL sets up DRAM while in its board_init_f()
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function, it is possible for the stack to move there before
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board_init_r() is reached. This option enables a special SDRAM
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location for the SPL stack. U-Boot SPL switches to this after
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board_init_f() completes, and before board_init_r() starts.
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config SPL_STACK_R_ADDR
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depends on SPL_STACK_R
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hex "SDRAM location for SPL stack"
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help
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Specify the address in SDRAM for the SPL stack. This will be set up
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before board_init_r() is called.
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config SPL_STACK_R_MALLOC_SIMPLE_LEN
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depends on SPL_STACK_R && SPL_SYS_MALLOC_SIMPLE
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hex "Size of malloc_simple heap after switching to DRAM SPL stack"
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default 0x100000
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help
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Specify the amount of the stack to use as memory pool for
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malloc_simple after switching the stack to DRAM. This may be set
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to give board_init_r() a larger heap then the initial heap in
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SRAM which is limited to SYS_MALLOC_F_LEN bytes.
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config SPL_SEPARATE_BSS
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depends on SPL
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bool "BSS section is in a different memory region from text"
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help
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Some platforms need a large BSS region in SPL and can provide this
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because RAM is already set up. In this case BSS can be moved to RAM.
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This option should then be enabled so that the correct device tree
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location is used. Normally we put the device tree at the end of BSS
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but with this option enabled, it goes at _image_binary_end.
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config SPL_DISPLAY_PRINT
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depends on SPL
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bool "Display a board-specific message in SPL"
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help
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If this option is enabled, U-Boot will call the function
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spl_display_print() immediately after displaying the SPL console
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banner ("U-Boot SPL ..."). This function should be provided by
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the board.
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config TPL
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bool
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depends on SPL && SUPPORT_TPL
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prompt "Enable TPL"
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help
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If you want to build TPL as well as the normal image and SPL, say Y.
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config SPL_CRC32_SUPPORT
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bool "Support CRC32"
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depends on SPL_FIT
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help
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Enable this to support CRC32 in FIT images within SPL. This is a
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32-bit checksum value that can be used to verify images. This is
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the least secure type of checksum, suitable for detected
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accidental image corruption. For secure applications you should
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consider SHA1 or SHA256.
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config SPL_MD5_SUPPORT
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bool "Support MD5"
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depends on SPL_FIT
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help
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Enable this to support MD5 in FIT images within SPL. An MD5
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checksum is a 128-bit hash value used to check that the image
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contents have not been corrupted. Note that MD5 is not considered
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secure as it is possible (with a brute-force attack) to adjust the
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image while still retaining the same MD5 hash value. For secure
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applications where images may be changed maliciously, you should
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consider SHA1 or SHA256.
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config SPL_SHA1_SUPPORT
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bool "Support SHA1"
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depends on SPL_FIT
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help
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Enable this to support SHA1 in FIT images within SPL. A SHA1
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checksum is a 160-bit (20-byte) hash value used to check that the
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image contents have not been corrupted or maliciously altered.
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While SHA1 is fairly secure it is coming to the end of its life
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due to the expanding computing power avaiable to brute-force
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attacks. For more security, consider SHA256.
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config SPL_SHA256_SUPPORT
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bool "Support SHA256"
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depends on SPL_FIT
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help
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Enable this to support SHA256 in FIT images within SPL. A SHA256
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checksum is a 256-bit (32-byte) hash value used to check that the
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image contents have not been corrupted. SHA256 is recommended for
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use in secure applications since (as at 2016) there is no known
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feasible attack that could produce a 'collision' with differing
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input data. Use this for the highest security. Note that only the
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SHA256 variant is supported: SHA512 and others are not currently
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supported in U-Boot.
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config SPL_CRYPTO_SUPPORT
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bool "Support crypto drivers"
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depends on SPL
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help
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Enable crypto drivers in SPL. These drivers can be used to
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accelerate secure boot processing in secure applications. Enable
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this option to build the drivers in drivers/crypto as part of an
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SPL build.
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config SPL_HASH_SUPPORT
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bool "Support hashing drivers"
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depends on SPL
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help
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Enable hashing drivers in SPL. These drivers can be used to
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accelerate secure boot processing in secure applications. Enable
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this option to build system-specific drivers for hash acceleration
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as part of an SPL build.
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config SPL_DMA_SUPPORT
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bool "Support DMA drivers"
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depends on SPL
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help
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Enable DMA (direct-memory-access) drivers in SPL. These drivers
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can be used to handle memory-to-peripheral data transfer without
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the CPU moving the data. Enable this option to build the drivers
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in drivers/dma as part of an SPL build.
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config SPL_DRIVERS_MISC_SUPPORT
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bool "Support misc drivers"
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depends on SPL
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help
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Enable miscellaneous drivers in SPL. These drivers perform various
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tasks that don't fall nicely into other categories, Enable this
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option to build the drivers in drivers/misc as part of an SPL
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build, for those that support building in SPL (not all drivers do).
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config SPL_ENV_SUPPORT
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bool "Support an environment"
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depends on SPL
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help
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Enable environment support in SPL. The U-Boot environment provides
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a number of settings (essentially name/value pairs) which can
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control many aspects of U-Boot's operation. Normally this is not
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needed in SPL as it has a much simpler task with less
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configuration. But some boards use this to support 'Falcon' boot
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on EXT2 and FAT, where SPL boots directly into Linux without
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starting U-Boot first. Enabling this option will make getenv()
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and setenv() available in SPL.
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config SPL_SAVEENV
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bool "Support save environment"
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depends on SPL && SPL_ENV_SUPPORT
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help
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Enable save environment support in SPL after setenv. By default
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the saveenv option is not provided in SPL, but some boards need
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this support in 'Falcon' boot, where SPL need to boot from
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different images based on environment variable set by OS. For
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example OS may set "reboot_image" environment variable to
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"recovery" inorder to boot recovery image by SPL. The SPL read
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"reboot_image" and act accordingly and change the reboot_image
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to default mode using setenv and save the environemnt.
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config SPL_ETH_SUPPORT
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bool "Support Ethernet"
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depends on SPL_ENV_SUPPORT
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help
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Enable access to the network subsystem and associated Ethernet
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drivers in SPL. This permits SPL to load U-Boot over an Ethernet
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link rather than from an on-board peripheral. Environment support
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is required since the network stack uses a number of environment
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variables. See also SPL_NET_SUPPORT.
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config SPL_EXT_SUPPORT
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bool "Support EXT filesystems"
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depends on SPL
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help
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Enable support for EXT2/3/4 filesystems with SPL. This permits
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U-Boot (or Linux in Falcon mode) to be loaded from an EXT
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filesystem from within SPL. Support for the underlying block
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device (e.g. MMC or USB) must be enabled separately.
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config SPL_FAT_SUPPORT
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bool "Support FAT filesystems"
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depends on SPL
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help
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Enable support for FAT and VFAT filesystems with SPL. This
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permits U-Boot (or Linux in Falcon mode) to be loaded from a FAT
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filesystem from within SPL. Support for the underlying block
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device (e.g. MMC or USB) must be enabled separately.
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config SPL_FPGA_SUPPORT
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bool "Support FPGAs"
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depends on SPL
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help
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Enable support for FPGAs in SPL. Field-programmable Gate Arrays
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provide software-configurable hardware which is typically used to
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implement peripherals (such as UARTs, LCD displays, MMC) or
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accelerate custom processing functions, such as image processing
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or machine learning. Sometimes it is useful to program the FPGA
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as early as possible during boot, and this option can enable that
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within SPL.
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config SPL_GPIO_SUPPORT
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bool "Support GPIO"
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depends on SPL
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help
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Enable support for GPIOs (General-purpose Input/Output) in SPL.
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GPIOs allow U-Boot to read the state of an input line (high or
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low) and set the state of an output line. This can be used to
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drive LEDs, control power to various system parts and read user
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input. GPIOs can be useful in SPL to enable a 'sign-of-life' LED,
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for example. Enable this option to build the drivers in
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drivers/gpio as part of an SPL build.
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config SPL_I2C_SUPPORT
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bool "Support I2C"
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depends on SPL
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help
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Enable support for the I2C (Inter-Integrated Circuit) bus in SPL.
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I2C works with a clock and data line which can be driven by a
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one or more masters or slaves. It is a fairly complex bus but is
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widely used as it only needs two lines for communication. Speeds of
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400kbps are typical but up to 3.4Mbps is supported by some
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hardware. I2C can be useful in SPL to configure power management
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ICs (PMICs) before raising the CPU clock speed, for example.
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Enable this option to build the drivers in drivers/i2c as part of
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an SPL build.
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config SPL_LIBCOMMON_SUPPORT
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bool "Support common libraries"
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depends on SPL
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help
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Enable support for common U-Boot libraries within SPL. These
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libraries include common code to deal with U-Boot images,
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environment and USB, for example. This option is enabled on many
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boards. Enable this option to build the code in common/ as part of
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an SPL build.
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config SPL_LIBDISK_SUPPORT
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bool "Support disk paritions"
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depends on SPL
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help
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Enable support for disk partitions within SPL. 'Disk' is something
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of a misnomer as it includes non-spinning media such as flash (as
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used in MMC and USB sticks). Partitions provide a way for a disk
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to be split up into separate regions, with a partition table placed
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at the start or end which describes the location and size of each
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'partition'. These partitions are typically uses as individual block
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devices, typically with an EXT2 or FAT filesystem in each. This
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option enables whatever partition support has been enabled in
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U-Boot to also be used in SPL. It brings in the code in disk/.
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config SPL_LIBGENERIC_SUPPORT
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bool "Support generic libraries"
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depends on SPL
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help
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Enable support for generic U-Boot libraries within SPL. These
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libraries include generic code to deal with device tree, hashing,
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printf(), compression and the like. This option is enabled on many
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boards. Enable this option to build the code in lib/ as part of an
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SPL build.
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config SPL_MMC_SUPPORT
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bool "Support MMC"
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depends on SPL
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help
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Enable support for MMC (Multimedia Card) within SPL. This enables
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the MMC protocol implementation and allows any enabled drivers to
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be used within SPL. MMC can be used with or without disk partition
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support depending on the application (SPL_LIBDISK_SUPPORT). Enable
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this option to build the drivers in drivers/mmc as part of an SPL
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build.
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config SPL_MPC8XXX_INIT_DDR_SUPPORT
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bool "Support MPC8XXX DDR init"
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depends on SPL
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help
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Enable support for DDR-SDRAM (double-data-rate synchronous dynamic
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random-access memory) on the MPC8XXX family within SPL. This
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allows DRAM to be set up before loading U-Boot into that DRAM,
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where it can run.
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config SPL_MTD_SUPPORT
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bool "Support MTD drivers"
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depends on SPL
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help
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Enable support for MTD (Memory Technology Device) within SPL. MTD
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provides a block interface over raw NAND and can also be used with
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SPI flash. This allows SPL to load U-Boot from supported MTD
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devices. See SPL_NAND_SUPPORT and SPL_ONENAND_SUPPORT for how
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to enable specific MTD drivers.
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config SPL_MUSB_NEW_SUPPORT
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bool "Support new Mentor Graphics USB"
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depends on SPL
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help
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Enable support for Mentor Graphics USB in SPL. This is a new
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driver used by some boards. Enable this option to build
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the drivers in drivers/usb/musb-new as part of an SPL build. The
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old drivers are in drivers/usb/musb.
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config SPL_NAND_SUPPORT
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bool "Support NAND flash"
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depends on SPL
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help
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Enable support for NAND (Negative AND) flash in SPL. NAND flash
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can be used to allow SPL to load U-Boot from supported devices.
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This enables the drivers in drivers/mtd/nand as part of an SPL
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build.
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config SPL_NET_SUPPORT
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bool "Support networking"
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depends on SPL
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help
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Enable support for network devices (such as Ethernet) in SPL.
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This permits SPL to load U-Boot over a network link rather than
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from an on-board peripheral. Environment support is required since
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the network stack uses a number of environment variables. See also
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SPL_ETH_SUPPORT.
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if SPL_NET_SUPPORT
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config SPL_NET_VCI_STRING
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string "BOOTP Vendor Class Identifier string sent by SPL"
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help
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As defined by RFC 2132 the vendor class identifier field can be
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sent by the client to identify the vendor type and configuration
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of a client. This is often used in practice to allow for the DHCP
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server to specify different files to load depending on if the ROM,
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SPL or U-Boot itself makes the request
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endif # if SPL_NET_SUPPORT
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config SPL_NO_CPU_SUPPORT
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bool "Drop CPU code in SPL"
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depends on SPL
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help
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This is specific to the ARM926EJ-S CPU. It disables the standard
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start.S start-up code, presumably so that a replacement can be
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used on that CPU. You should not enable it unless you know what
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you are doing.
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config SPL_NOR_SUPPORT
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bool "Support NOR flash"
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depends on SPL
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help
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Enable support for loading U-Boot from memory-mapped NOR (Negative
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OR) flash in SPL. NOR flash is slow to write but fast to read, and
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a memory-mapped device makes it very easy to access. Loading from
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NOR is typically achieved with just a memcpy().
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config SPL_ONENAND_SUPPORT
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bool "Support OneNAND flash"
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depends on SPL
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help
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Enable support for OneNAND (Negative AND) flash in SPL. OneNAND is
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a type of NAND flash and therefore can be used to allow SPL to
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load U-Boot from supported devices. This enables the drivers in
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drivers/mtd/onenand as part of an SPL build.
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config SPL_POST_MEM_SUPPORT
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bool "Support POST drivers"
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depends on SPL
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help
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Enable support for POST (Power-on Self Test) in SPL. POST is a
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procedure that checks that the hardware (CPU or board) appears to
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be functionally correctly. It is a sanity check that can be
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performed before booting. This enables the drivers in post/drivers
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as part of an SPL build.
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config SPL_POWER_SUPPORT
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bool "Support power drivers"
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depends on SPL
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help
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Enable support for power control in SPL. This includes support
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for PMICs (Power-management Integrated Circuits) and some of the
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features provided by PMICs. In particular, voltage regulators can
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be used to enable/disable power and vary its voltage. That can be
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useful in SPL to turn on boot peripherals and adjust CPU voltage
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so that the clock speed can be increased. This enables the drivers
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in drivers/power, drivers/power/pmic and drivers/power/regulator
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as part of an SPL build.
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config SPL_SATA_SUPPORT
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bool "Support loading from SATA"
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depends on SPL
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help
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Enable support for SATA (Serial AT attachment) in SPL. This allows
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use of SATA devices such as hard drives and flash drivers for
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loading U-Boot. SATA is used in higher-end embedded systems and
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can provide higher performance than MMC , at somewhat higher
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expense and power consumption. This enables loading from SATA
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using a configured device.
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config SPL_SERIAL_SUPPORT
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bool "Support serial"
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depends on SPL
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help
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Enable support for serial in SPL. This allows use of a serial UART
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for displaying messages while SPL is running. It also brings in
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printf() and panic() functions. This should normally be enabled
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unless there are space reasons not to. Even then, consider
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enabling USE_TINY_PRINTF which is a small printf() version.
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config SPL_SPI_FLASH_SUPPORT
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bool "Support SPI flash drivers"
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depends on SPL
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help
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Enable support for using SPI flash in SPL, and loading U-Boot from
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SPI flash. SPI flash (Serial Peripheral Bus flash) is named after
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the SPI bus that is used to connect it to a system. It is a simple
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but fast bidirectional 4-wire bus (clock, chip select and two data
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lines). This enables the drivers in drivers/mtd/spi as part of an
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SPL build. This normally requires SPL_SPI_SUPPORT.
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config SPL_SPI_SUPPORT
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bool "Support SPI drivers"
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depends on SPL
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help
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Enable support for using SPI in SPL. This is used for connecting
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to SPI flash for loading U-Boot. See SPL_SPI_FLASH_SUPPORT for
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more details on that. The SPI driver provides the transport for
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data between the SPI flash and the CPU. This option can be used to
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enable SPI drivers that are needed for other purposes also, such
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as a SPI PMIC.
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config SPL_USBETH_SUPPORT
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bool "Support USB Ethernet drivers"
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depends on SPL
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help
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Enable access to the USB network subsystem and associated
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drivers in SPL. This permits SPL to load U-Boot over a
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USB-connected Ethernet link (such as a USB Ethernet dongle) rather
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than from an onboard peripheral. Environment support is required
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since the network stack uses a number of environment variables.
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See also SPL_NET_SUPPORT and SPL_ETH_SUPPORT.
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config SPL_USB_HOST_SUPPORT
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bool "Support USB host drivers"
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depends on SPL
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help
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Enable access to USB (Universal Serial Bus) host devices so that
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SPL can load U-Boot from a connected USB peripheral, such as a USB
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flash stick. While USB takes a little longer to start up than most
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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_WATCHDOG_SUPPORT
|
|
bool "Support watchdog drivers"
|
|
depends on SPL
|
|
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
|
|
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 TPL_ENV_SUPPORT
|
|
bool "Support an environment"
|
|
depends on TPL
|
|
help
|
|
Enable environment support in TPL. See SPL_ENV_SUPPORT for details.
|
|
|
|
config TPL_I2C_SUPPORT
|
|
bool "Support I2C"
|
|
depends on TPL
|
|
help
|
|
Enable support for the I2C bus in SPL. See SPL_I2C_SUPPORT for
|
|
details.
|
|
|
|
config TPL_LIBCOMMON_SUPPORT
|
|
bool "Support common libraries"
|
|
depends on TPL
|
|
help
|
|
Enable support for common U-Boot libraries within TPL. See
|
|
SPL_LIBCOMMON_SUPPORT for details.
|
|
|
|
config TPL_LIBGENERIC_SUPPORT
|
|
bool "Support generic libraries"
|
|
depends on TPL
|
|
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"
|
|
depends on TPL
|
|
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 TPL
|
|
help
|
|
Enable support for MMC within TPL. See SPL_MMC_SUPPORT for details.
|
|
|
|
config TPL_NAND_SUPPORT
|
|
bool "Support NAND flash"
|
|
depends on TPL
|
|
help
|
|
Enable support for NAND in SPL. See SPL_NAND_SUPPORT for details.
|
|
|
|
config TPL_SERIAL_SUPPORT
|
|
bool "Support serial"
|
|
depends on TPL
|
|
help
|
|
Enable support for serial in SPL. See SPL_SERIAL_SUPPORT for
|
|
details.
|
|
|
|
config TPL_SPI_FLASH_SUPPORT
|
|
bool "Support SPI flash drivers"
|
|
depends on TPL
|
|
help
|
|
Enable support for using SPI flash in SPL. See SPL_SPI_FLASH_SUPPORT
|
|
for details.
|
|
|
|
config TPL_SPI_SUPPORT
|
|
bool "Support SPI drivers"
|
|
depends on TPL
|
|
help
|
|
Enable support for using SPI in SPL. See SPL_SPI_SUPPORT for
|
|
details.
|
|
|
|
endmenu
|