| 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. |
| |
| 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 |
| help |
| It is useful to be able to pass information from SPL to U-Boot |
| proper to preserve state that is known in SPL and is needed in U-Boot. |
| Enable this to locate the handoff information in U-Boot proper, early |
| in boot. It is available in gd->handoff. The state state is set up |
| in SPL (or TPL if that is being used). |
| |
| if SPL |
| |
| config SPL_HANDOFF |
| bool "Pass hand-off information from SPL to U-Boot proper" |
| depends on HANDOFF |
| default y |
| help |
| This option enables SPL to write handoff information. This can be |
| used to pass information like the size of SDRAM from SPL to U-Boot |
| proper. Also SPL can receive information from TPL in the same place |
| if that is enabled. |
| |
| 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_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 |
| 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 && !SPL_LOAD_FIT |
| 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_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" |
| 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_BANNER_PRINT |
| bool "Enable output of the SPL banner 'U-Boot SPL ...'" |
| default y |
| help |
| If this option is enabled, SPL will print the banner with version |
| info. Disabling this option could be useful to reduce TPL boot time |
| (e.g. approx. 6 ms faster, when output on i.MX6 with 115200 baud). |
| |
| config TPL_BANNER_PRINT |
| bool "Enable output of the TPL banner 'U-Boot TPL ...'" |
| default y |
| help |
| If this option is enabled, SPL will not print the banner with version |
| info. Disabling this option could be useful to reduce SPL boot time |
| (e.g. approx. 6 ms faster, 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" |
| default y if SPL_LEGACY_IMAGE_SUPPORT |
| help |
| 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" |
| 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 available 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 |
| default y if ARCH_IMX8M |
| 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 TPL_HASH_SUPPORT |
| bool "Support hashing drivers in TPL" |
| 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_FS_EXT4 |
| 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_FS_FAT |
| 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_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 |
| 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 in SPL" |
| 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" |
| select 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 |
| select HAVE_BLOCK_DEVICE |
| 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_TINY |
| bool "Tiny MMC framework in SPL" |
| depends on SPL_MMC_SUPPORT |
| default n |
| help |
| Enable MMC framework tinification support. This option is useful if |
| if your SPL is extremely size constrained. Heed the warning, enable |
| this option if and only if you know exactly what you are doing, if |
| you are reading this help text, you most likely have no idea :-) |
| |
| The MMC framework is reduced to bare minimum to be useful. No malloc |
| support is needed for the MMC framework operation with this option |
| enabled. The framework supports exactly one MMC device and exactly |
| one MMC driver. The MMC driver can be adjusted to avoid any malloc |
| operations too, which can remove the need for malloc support in SPL |
| and thus further reduce footprint. |
| |
| 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_UBI |
| bool "Support UBI" |
| help |
| Enable support for loading payloads from UBI. See |
| README.ubispl for more info. |
| |
| if SPL_UBI |
| config SPL_UBI_LOAD_BY_VOLNAME |
| bool "Support loading volumes by name" |
| help |
| This enables support for loading UBI volumes by name. When this |
| is set, CONFIG_SPL_UBI_LOAD_MONITOR_VOLNAME can be used to |
| configure the volume name from which to load U-Boot. |
| |
| config SPL_UBI_MAX_VOL_LEBS |
| int "Maximum number of LEBs per volume" |
| depends on SPL_UBI |
| help |
| The maximum number of logical eraseblocks which a static volume |
| to load can contain. Used for sizing the scan data structure. |
| |
| config SPL_UBI_MAX_PEB_SIZE |
| int "Maximum PEB size" |
| depends on SPL_UBI |
| help |
| The maximum physical erase block size. |
| |
| config SPL_UBI_MAX_PEBS |
| int "Maximum number of PEBs" |
| depends on SPL_UBI |
| help |
| The maximum physical erase block size. If not overridden by |
| board code, this value will be used as the actual number of PEBs. |
| |
| config SPL_UBI_PEB_OFFSET |
| int "Offset to first UBI PEB" |
| depends on SPL_UBI |
| help |
| The offset in number of PEBs from the start of flash to the first |
| PEB part of the UBI image. |
| |
| config SPL_UBI_VID_OFFSET |
| int "Offset to VID header" |
| depends on SPL_UBI |
| |
| config SPL_UBI_LEB_START |
| int "Offset to LEB in PEB" |
| depends on SPL_UBI |
| help |
| The offset in bytes to the LEB within a PEB. |
| |
| config SPL_UBI_INFO_ADDR |
| hex "Address to place UBI scan info" |
| depends on SPL_UBI |
| help |
| Address for ubispl to place the scan info. Read README.ubispl to |
| determine the required size |
| |
| config SPL_UBI_VOL_IDS |
| int "Maximum volume id" |
| depends on SPL_UBI |
| help |
| The maximum volume id which can be loaded. Used for sizing the |
| scan data structure. |
| |
| config SPL_UBI_LOAD_MONITOR_ID |
| int "id of U-Boot volume" |
| depends on SPL_UBI |
| help |
| The UBI volume id from which to load U-Boot |
| |
| config SPL_UBI_LOAD_MONITOR_VOLNAME |
| string "volume name of U-Boot volume" |
| depends on SPL_UBI_LOAD_BY_VOLNAME |
| help |
| The UBI volume name from which to load U-Boot |
| |
| config SPL_UBI_LOAD_KERNEL_ID |
| int "id of kernel volume" |
| depends on SPL_OS_BOOT && SPL_UBI |
| help |
| The UBI volume id from which to load the kernel |
| |
| config SPL_UBI_LOAD_ARGS_ID |
| int "id of kernel args volume" |
| depends on SPL_OS_BOOT && SPL_UBI |
| help |
| The UBI volume id from which to load the device tree |
| |
| config UBI_SPL_SILENCE_MSG |
| bool "silence UBI SPL messages" |
| default n |
| help |
| Disable messages from UBI SPL. This leaves warnings |
| and errors enabled. |
| |
| endif # if SPL_UBI |
| |
| 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 compatibility, 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 |
| 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. |
| |
| 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" |
| 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 |
| 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" |
| select HAVE_BLOCK_DEVICE |
| 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_STORAGE |
| bool "Support loading from USB" |
| 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. |
| 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 |
| bool "Suppport USB Gadget drivers" |
| help |
| Enable USB Gadget API which allows to enable USB device functions |
| in SPL. |
| |
| if SPL_USB_GADGET |
| |
| 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 |
| 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 |
| |
| config SPL_DFU_RAM |
| bool "RAM device" |
| depends on SPL_DFU && 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 SPL_OPTEE |
| bool "Support OP-TEE Trusted OS" |
| depends on ARM |
| help |
| OP-TEE is an open source Trusted OS which is loaded by SPL. |
| More detail at: https://github.com/OP-TEE/optee_os |
| |
| 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_HANDOFF |
| bool "Pass hand-off information from TPL to SPL and U-Boot proper" |
| depends on HANDOFF |
| default y |
| help |
| This option enables TPL to write handoff information. This can be |
| used to pass information like the size of SDRAM from TPL to U-Boot |
| proper. The information is also available to SPL if it is useful |
| there. |
| |
| 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 |
| 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 |
| 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_GPIO_SUPPORT |
| bool "Support GPIO in TPL" |
| help |
| Enable support for GPIOs (General-purpose Input/Output) in TPL. |
| 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 TPL to enable a 'sign-of-life' LED, |
| for example. Enable this option to build the drivers in |
| drivers/gpio as part of an TPL build. |
| |
| 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_PCI |
| bool "Support PCI drivers" |
| help |
| Enable support for PCI in TPL. 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 a TPL build. |
| |
| config TPL_PCH_SUPPORT |
| bool "Support PCH drivers" |
| help |
| Enable support for PCH (Platform Controller Hub) devices in TPL. |
| These are used to set up GPIOs and the SPI peripheral early in |
| boot. This enables the drivers in drivers/pch as part of a TPL |
| build. |
| |
| 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_RTC_SUPPORT |
| bool "Support RTC drivers" |
| help |
| Enable RTC (Real-time Clock) support in TPL. 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 TPL |
| build. |
| |
| 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 |
| |
| 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 |