supports MMC, NAND and YMODEM and other methods loading of U-Boot
and the Linux Kernel. If unsure, say Y.
+config SPL_SIZE_LIMIT
+ int "Maximum size of SPL image"
+ depends on SPL
+ default 69632 if ARCH_MX6
+ default 0
+ help
+ Specifies the maximum length of the U-Boot SPL image.
+ If this value is zero, it is ignored.
+
+config SPL_SIZE_LIMIT_SUBTRACT_GD
+ bool "SPL image size check: provide space for global data"
+ depends on SPL_SIZE_LIMIT > 0
+ help
+ If enabled, aligned size of global data is reserved in
+ SPL_SIZE_LIMIT check to ensure such an image does not overflow SRAM
+ if SPL_SIZE_LIMIT describes the size of SRAM available for SPL when
+ pre-reloc global data is put into this SRAM, too.
+
+config SPL_SIZE_LIMIT_SUBTRACT_MALLOC
+ bool "SPL image size check: provide space for malloc() pool before relocation"
+ depends on SPL_SIZE_LIMIT > 0
+ help
+ If enabled, SPL_SYS_MALLOC_F_LEN is reserved in SPL_SIZE_LIMIT check
+ to ensure such an image does not overflow SRAM if SPL_SIZE_LIMIT
+ describes the size of SRAM available for SPL when pre-reloc malloc
+ pool is put into this SRAM, too.
+
+config SPL_SIZE_LIMIT_PROVIDE_STACK
+ hex "SPL image size check: provide stack space before relocation"
+ depends on SPL_SIZE_LIMIT > 0
+ default 0
+ help
+ If set, this size is reserved in SPL_SIZE_LIMIT check to ensure such
+ an image does not overflow SRAM if SPL_SIZE_LIMIT describes the size
+ of SRAM available for SPL when the stack required before reolcation
+ uses this SRAM, too.
+
config HANDOFF
bool "Pass hand-off information from SPL to U-Boot proper"
depends on BLOBLIST
U-Boot stage. Set this to the path of the linker-script to
be used for SPL.
+config SPL_TEXT_BASE
+ hex "SPL Text Base"
+ default ISW_ENTRY_ADDR if AM43XX || AM33XX || OMAP54XX || ARCH_KEYSTONE
+ default 0x0
+ help
+ The address in memory that SPL will be running from.
+
config SPL_BOARD_INIT
bool "Call board-specific initialization in SPL"
help
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_CRC_CHECK
+ bool "Check CRC of Legacy images"
+ depends on SPL_LEGACY_IMAGE_SUPPORT
+ select SPL_CRC32_SUPPORT
+ help
+ Enable this to check the CRC of Legacy images. While this increases
+ reliability, it affects both code size and boot duration.
+ If disabled, Legacy images are booted if the image magic and size
+ are correct, without further integrity checks.
+
config SPL_SYS_MALLOC_SIMPLE
bool
prompt "Only use malloc_simple functions in the SPL"
config SPL_CRC32_SUPPORT
bool "Support CRC32"
- depends on SPL_FIT
+ default y if SPL_LEGACY_IMAGE_SUPPORT
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.
+ Enable this to support CRC32 in uImages or FIT images within SPL.
+ This is a 32-bit checksum value that can be used to verify images.
+ For FIT 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"
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
+ due to the expanding computing power available to brute-force
attacks. For more security, consider SHA256.
config SPL_SHA256_SUPPORT
is required since the network stack uses a number of environment
variables. See also SPL_NET_SUPPORT.
-config SPL_EXT_SUPPORT
+config SPL_FS_EXT4
bool "Support EXT filesystems"
help
Enable support for EXT2/3/4 filesystems with SPL. This permits
filesystem from within SPL. Support for the underlying block
device (e.g. MMC or USB) must be enabled separately.
-config SPL_FAT_SUPPORT
+config SPL_FS_FAT
bool "Support FAT filesystems"
select FS_FAT
help
filesystem from within SPL. Support for the underlying block
device (e.g. MMC or USB) must be enabled separately.
+config SPL_FAT_WRITE
+ bool "Support write for FAT filesystems"
+ help
+ Enable write support for FAT and VFAT filesystems with SPL.
+ Support for the underlying block device (e.g. MMC or USB) must be
+ enabled separately.
+
config SPL_FPGA_SUPPORT
bool "Support FPGAs"
help
lines). This enables the drivers in drivers/mtd/spi as part of an
SPL build. This normally requires SPL_SPI_SUPPORT.
+if SPL_SPI_FLASH_SUPPORT
+
+config SPL_SPI_FLASH_TINY
+ bool "Enable low footprint SPL SPI Flash support"
+ depends on !SPI_FLASH_BAR
+ default y if SPI_FLASH
+ help
+ Enable lightweight SPL SPI Flash support that supports just reading
+ data/images from flash. No support to write/erase flash. Enable
+ this if you have SPL size limitations and don't need full
+ fledged SPI flash support.
+
+config SPL_SPI_FLASH_SFDP_SUPPORT
+ bool "SFDP table parsing support for SPI NOR flashes"
+ depends on !SPI_FLASH_BAR && !SPL_SPI_FLASH_TINY
+ help
+ Enable support for parsing and auto discovery of parameters for
+ SPI NOR flashes using Serial Flash Discoverable Parameters (SFDP)
+ tables as per JESD216 standard in SPL.
+
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.
+endif # SPL_SPI_FLASH_SUPPORT
+
config SPL_SPI_SUPPORT
bool "Support SPI drivers"
help
device can be attached. This option enables the drivers in
drivers/usb/host as part of an SPL build.
-config SPL_USB_SUPPORT
+config SPL_USB_STORAGE
bool "Support loading from USB"
- depends on SPL_USB_HOST_SUPPORT
+ depends on SPL_USB_HOST_SUPPORT && !(BLK && !DM_USB)
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.
config TPL_LDSCRIPT
string "Linker script for the TPL stage"
depends on TPL
+ default "arch/arm/cpu/armv8/u-boot-spl.lds" if ARM64
+ default "arch/$(ARCH)/cpu/u-boot-spl.lds"
help
The TPL stage will usually require a different linker-script
(as it runs from a different memory region) than the regular
projects / oweals / u-boot.git / blobdiff