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.
+
+menu "PowerPC SPL Boot options"
+ depends on PPC && (SUPPORT_SPL && !SPL_FRAMEWORK)
+
+config SPL_NAND_BOOT
+ bool "Load SPL from NAND flash"
+
+config SPL_MMC_BOOT
+ bool "Load SPL from SD Card / eMMC"
+
+config SPL_SPI_BOOT
+ bool "Load SPL from SPI flash"
+
+config SPL_FSL_PBL
+ bool "Create SPL in Freescale PBI format"
+ help
+ Create boot binary having SPL binary in PBI format concatenated with
+ u-boot binary.
+
+endmenu
+
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
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.
endif # TPL
+config SPL_AT91_MCK_BYPASS
+ bool "Use external clock signal as a source of main clock for AT91 platforms"
+ depends on ARCH_AT91
+ default n
+ help
+ Use external 8 to 24 Mhz clock signal as source of main clock instead
+ of an external crystal oscillator.
+ This option disables the internal driving on the XOUT pin.
+ The external source has to provide a stable clock on the XIN pin.
+ If this option is disabled, the SoC expects a crystal oscillator
+ that needs driving on both XIN and XOUT lines.
+
endif # SPL
endmenu
projects / oweals / u-boot.git / blobdiff