| menu "Library routines" |
| |
| config ADDR_MAP |
| bool "Enable support for non-identity virtual-physical mappings" |
| help |
| Enables helper code for implementing non-identity virtual-physical |
| memory mappings for 32bit CPUs. |
| |
| This library only works in the post-relocation phase. |
| |
| config SYS_NUM_ADDR_MAP |
| int "Size of the address-map table" |
| depends on ADDR_MAP |
| default 16 |
| help |
| Sets the number of entries in the virtual-physical mapping table. |
| |
| config SYS_TIMER_COUNTS_DOWN |
| bool "System timer counts down rather than up" |
| |
| config PHYSMEM |
| bool "Access to physical memory region (> 4G)" |
| help |
| Some basic support is provided for operations on memory not |
| normally accessible to 32-bit U-Boot - e.g. some architectures |
| support access to more than 4G of memory on 32-bit |
| machines using physical address extension or similar. |
| Enable this to access this basic support, which only supports clearing |
| the memory. |
| |
| config BCH |
| bool "Enable Software based BCH ECC" |
| help |
| Enables software based BCH ECC algorithm present in lib/bch.c |
| This is used by SoC platforms which do not have built-in ELM |
| hardware engine required for BCH ECC correction. |
| |
| config BINMAN_FDT |
| bool "Allow access to binman information in the device tree" |
| depends on BINMAN && DM && OF_CONTROL |
| default y if OF_SEPARATE || OF_EMBED |
| help |
| This enables U-Boot to access information about binman entries, |
| stored in the device tree in a binman node. Typical uses are to |
| locate entries in the firmware image. See binman.h for the available |
| functionality. |
| |
| config CC_OPTIMIZE_LIBS_FOR_SPEED |
| bool "Optimize libraries for speed" |
| help |
| Enabling this option will pass "-O2" to gcc when compiling |
| under "lib" directory. |
| |
| If unsure, say N. |
| |
| config CHARSET |
| bool |
| |
| config DYNAMIC_CRC_TABLE |
| bool "Enable Dynamic tables for CRC" |
| help |
| Enable this option to calculate entries for CRC tables at runtime. |
| This can be helpful when reducing the size of the build image |
| |
| config HAVE_ARCH_IOMAP |
| bool |
| help |
| Enable this option if architecture provides io{read,write}{8,16,32} |
| I/O accessor functions. |
| |
| config HAVE_PRIVATE_LIBGCC |
| bool |
| |
| config LIB_UUID |
| bool |
| |
| config RANDOM_UUID |
| bool "GPT Random UUID generation" |
| select LIB_UUID |
| help |
| Enable the generation of partitions with random UUIDs if none |
| are provided. |
| |
| config SPL_LIB_UUID |
| depends on SPL |
| bool |
| |
| config SEMIHOSTING |
| bool "Support semihosting" |
| depends on ARM || RISCV |
| help |
| Semihosting is a method for a target to communicate with a host |
| debugger. It uses special instructions which the debugger will trap |
| on and interpret. This allows U-Boot to read/write files, print to |
| the console, and execute arbitrary commands on the host system. |
| |
| Enabling this option will add support for reading and writing files |
| on the host system. If you don't have a debugger attached then trying |
| to do this will likely cause U-Boot to hang. Say 'n' if you are unsure. |
| |
| config SEMIHOSTING_FALLBACK |
| bool "Recover gracefully when semihosting fails" |
| depends on SEMIHOSTING |
| default y |
| help |
| Normally, if U-Boot makes a semihosting call and no debugger is |
| attached, then it will panic due to a synchronous abort |
| exception. This config adds an exception handler which will allow |
| U-Boot to recover. Say 'y' if unsure. |
| |
| config SPL_SEMIHOSTING |
| bool "Support semihosting in SPL" |
| depends on SPL && (ARM || RISCV) |
| help |
| Semihosting is a method for a target to communicate with a host |
| debugger. It uses special instructions which the debugger will trap |
| on and interpret. This allows U-Boot to read/write files, print to |
| the console, and execute arbitrary commands on the host system. |
| |
| Enabling this option will add support for reading and writing files |
| on the host system. If you don't have a debugger attached then trying |
| to do this will likely cause U-Boot to hang. Say 'n' if you are unsure. |
| |
| config SPL_SEMIHOSTING_FALLBACK |
| bool "Recover gracefully when semihosting fails in SPL" |
| depends on SPL_SEMIHOSTING |
| select ARMV8_SPL_EXCEPTION_VECTORS if ARM64 |
| default y |
| help |
| Normally, if U-Boot makes a semihosting call and no debugger is |
| attached, then it will panic due to a synchronous abort |
| exception. This config adds an exception handler which will allow |
| U-Boot to recover. Say 'y' if unsure. |
| |
| config PRINTF |
| bool |
| default y |
| |
| config SPL_PRINTF |
| bool |
| select SPL_SPRINTF |
| select SPL_STRTO if !SPL_USE_TINY_PRINTF |
| |
| config TPL_PRINTF |
| bool |
| select TPL_SPRINTF |
| select TPL_STRTO if !TPL_USE_TINY_PRINTF |
| |
| config VPL_PRINTF |
| bool |
| select VPL_SPRINTF |
| select VPL_STRTO if !VPL_USE_TINY_PRINTF |
| |
| config SPRINTF |
| bool |
| default y |
| |
| config SPL_SPRINTF |
| bool |
| |
| config TPL_SPRINTF |
| bool |
| |
| config VPL_SPRINTF |
| bool |
| |
| config SSCANF |
| bool |
| |
| config STRTO |
| bool |
| default y |
| |
| config SPL_STRTO |
| bool |
| |
| config TPL_STRTO |
| bool |
| |
| config VPL_STRTO |
| bool |
| |
| config IMAGE_SPARSE |
| bool |
| |
| config IMAGE_SPARSE_FILLBUF_SIZE |
| hex "Android sparse image CHUNK_TYPE_FILL buffer size" |
| default 0x80000 |
| depends on IMAGE_SPARSE |
| help |
| Set the size of the fill buffer used when processing CHUNK_TYPE_FILL |
| chunks. |
| |
| config USE_PRIVATE_LIBGCC |
| bool "Use private libgcc" |
| depends on HAVE_PRIVATE_LIBGCC |
| default y if HAVE_PRIVATE_LIBGCC && ((ARM && !ARM64) || MIPS) |
| help |
| This option allows you to use the built-in libgcc implementation |
| of U-Boot instead of the one provided by the compiler. |
| If unsure, say N. |
| |
| config SYS_HZ |
| int |
| default 1000 |
| help |
| The frequency of the timer returned by get_timer(). |
| get_timer() must operate in milliseconds and this option must be |
| set to 1000. |
| |
| config SPL_USE_TINY_PRINTF |
| bool "Enable tiny printf() version in SPL" |
| depends on SPL |
| default y |
| help |
| This option enables a tiny, stripped down printf version. |
| This should only be used in space limited environments, |
| like SPL versions with hard memory limits. This version |
| reduces the code size by about 2.5KiB on armv7. |
| |
| The supported format specifiers are %c, %s, %u/%d and %x. |
| |
| config TPL_USE_TINY_PRINTF |
| bool "Enable tiny printf() version in TPL" |
| depends on TPL |
| default y if SPL_USE_TINY_PRINTF |
| help |
| This option enables a tiny, stripped down printf version. |
| This should only be used in space limited environments, |
| like SPL versions with hard memory limits. This version |
| reduces the code size by about 2.5KiB on armv7. |
| |
| The supported format specifiers are %c, %s, %u/%d and %x. |
| |
| config VPL_USE_TINY_PRINTF |
| bool "Enable tiny printf() version for VPL" |
| depends on VPL |
| help |
| This option enables a tiny, stripped down printf version. |
| This should only be used in space limited environments, |
| like SPL versions with hard memory limits. This version |
| reduces the code size by about 2.5KiB on armv7. |
| |
| The supported format specifiers are %c, %s, %u/%d and %x. |
| |
| config PANIC_HANG |
| bool "Do not reset the system on fatal error" |
| help |
| Define this option to stop the system in case of a fatal error, |
| so that you have to reset it manually. This is probably NOT a good |
| idea for an embedded system where you want the system to reboot |
| automatically as fast as possible, but it may be useful during |
| development since you can try to debug the conditions that lead to |
| the situation. |
| |
| config REGEX |
| bool "Enable regular expression support" |
| default y if NET |
| help |
| If this variable is defined, U-Boot is linked against the |
| SLRE (Super Light Regular Expression) library, which adds |
| regex support to some commands, for example "env grep" and |
| "setexpr". |
| |
| choice |
| prompt "Pseudo-random library support type" |
| depends on NET_RANDOM_ETHADDR || RANDOM_UUID || CMD_UUID || \ |
| RNG_SANDBOX || UT_LIB && AES || FAT_WRITE |
| default LIB_RAND |
| help |
| Select the library to provide pseudo-random number generator |
| functions. LIB_HW_RAND supports certain hardware engines that |
| provide this functionality. If in doubt, select LIB_RAND. |
| |
| config LIB_RAND |
| bool "Pseudo-random library support" |
| |
| config LIB_HW_RAND |
| bool "HW Engine for random library support" |
| |
| endchoice |
| |
| config SUPPORT_ACPI |
| bool |
| help |
| Enable this if your arch or board can support generating ACPI |
| (Advanced Configuration and Power Interface) tables. In this case |
| U-Boot can generate these tables and pass them to the Operating |
| System. |
| |
| config ACPI |
| bool "Enable support for ACPI libraries" |
| depends on SUPPORT_ACPI |
| help |
| Provides library functions for dealing with ACPI tables. This does |
| not necessarily include generation of tables |
| (see GENERATE_ACPI_TABLE), but allows for tables to be located. |
| |
| config SPL_ACPI |
| bool "Enable support for ACPI libraries in SPL" |
| depends on SPL && SUPPORT_ACPI |
| help |
| Provides library functions for dealing with ACPI tables in SPL. This |
| does not necessarily include generation of tables |
| (see GENERATE_ACPI_TABLE), but allows for tables to be located. |
| |
| config GENERATE_ACPI_TABLE |
| bool "Generate an ACPI (Advanced Configuration and Power Interface) table" |
| depends on ACPI |
| select QFW if QEMU |
| help |
| The Advanced Configuration and Power Interface (ACPI) specification |
| provides an open standard for device configuration and management |
| by the operating system. It defines platform-independent interfaces |
| for configuration and power management monitoring. |
| |
| config SPL_TINY_MEMSET |
| bool "Use a very small memset() in SPL" |
| depends on SPL |
| help |
| The faster memset() is the arch-specific one (if available) enabled |
| by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get |
| better performance by writing a word at a time. But in very |
| size-constrained environments even this may be too big. Enable this |
| option to reduce code size slightly at the cost of some speed. |
| |
| config TPL_TINY_MEMSET |
| bool "Use a very small memset() in TPL" |
| depends on TPL |
| help |
| The faster memset() is the arch-specific one (if available) enabled |
| by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get |
| better performance by writing a word at a time. But in very |
| size-constrained environments even this may be too big. Enable this |
| option to reduce code size slightly at the cost of some speed. |
| |
| config RBTREE |
| bool |
| |
| config BITREVERSE |
| bool "Bit reverse library from Linux" |
| |
| config TRACE |
| bool "Support for tracing of function calls and timing" |
| imply CMD_TRACE |
| imply TIMER_EARLY |
| help |
| Enables function tracing within U-Boot. This allows recording of call |
| traces including timing information. The command can write data to |
| memory for exporting for analysis (e.g. using bootchart). |
| See doc/develop/trace.rst for full details. |
| |
| config TRACE_BUFFER_SIZE |
| hex "Size of trace buffer in U-Boot" |
| depends on TRACE |
| default 0x01000000 |
| help |
| Sets the size of the trace buffer in U-Boot. This is allocated from |
| memory during relocation. If this buffer is too small, the trace |
| history will be truncated, with later records omitted. |
| |
| If early trace is enabled (i.e. before relocation), this buffer must |
| be large enough to include all the data from the early trace buffer as |
| well, since this is copied over to the main buffer during relocation. |
| |
| A trace record is emitted for each function call and each record is |
| 12 bytes (see struct trace_call). A suggested minimum size is 1MB. If |
| the size is too small then 'trace stats' will show a message saying |
| how many records were dropped due to buffer overflow. |
| |
| config TRACE_CALL_DEPTH_LIMIT |
| int "Trace call depth limit" |
| depends on TRACE |
| default 15 |
| help |
| Sets the maximum call depth up to which function calls are recorded. |
| |
| config TRACE_EARLY |
| bool "Enable tracing before relocation" |
| depends on TRACE |
| help |
| Sometimes it is helpful to trace execution of U-Boot before |
| relocation. This is possible by using a arch-specific, fixed buffer |
| position in memory. Enable this option to start tracing as early as |
| possible after U-Boot starts. |
| |
| config TRACE_EARLY_SIZE |
| hex "Size of early trace buffer in U-Boot" |
| depends on TRACE_EARLY |
| default 0x00100000 |
| help |
| Sets the size of the early trace buffer in bytes. This is used to hold |
| tracing information before relocation. |
| |
| config TRACE_EARLY_CALL_DEPTH_LIMIT |
| int "Early trace call depth limit" |
| depends on TRACE_EARLY |
| default 15 |
| help |
| Sets the maximum call depth up to which function calls are recorded |
| during early tracing. |
| |
| config TRACE_EARLY_ADDR |
| hex "Address of early trace buffer in U-Boot" |
| depends on TRACE_EARLY |
| default 0x00200000 |
| help |
| Sets the address of the early trace buffer in U-Boot. This memory |
| must be accessible before relocation. |
| |
| A trace record is emitted for each function call and each record is |
| 12 bytes (see struct trace_call). A suggested minimum size is 1MB. If |
| the size is too small then the message which says the amount of early |
| data being coped will the the same as the |
| |
| config CIRCBUF |
| bool "Enable circular buffer support" |
| |
| source "lib/dhry/Kconfig" |
| |
| menu "Security support" |
| |
| config AES |
| bool "Support the AES algorithm" |
| help |
| This provides a means to encrypt and decrypt data using the AES |
| (Advanced Encryption Standard). This algorithm uses a symetric key |
| and is widely used as a streaming cipher. Different key lengths are |
| supported by the algorithm but only a 128-bit key is supported at |
| present. |
| |
| source "lib/ecdsa/Kconfig" |
| source "lib/rsa/Kconfig" |
| source "lib/crypto/Kconfig" |
| source "lib/crypt/Kconfig" |
| |
| config TPM |
| bool "Trusted Platform Module (TPM) Support" |
| depends on DM |
| imply DM_RNG |
| select SHA1 |
| help |
| This enables support for TPMs which can be used to provide security |
| features for your board. The TPM can be connected via LPC or I2C |
| and a sandbox TPM is provided for testing purposes. Use the 'tpm' |
| command to interactive the TPM. Driver model support is provided |
| for the low-level TPM interface, but only one TPM is supported at |
| a time by the TPM library. |
| For size reasons only SHA1 is selected which is supported on TPM1.2. |
| If you want a fully functional TPM enable all hashing algorithms. |
| If you enabled measured boot all hashing algorithms are selected. |
| |
| config SPL_TPM |
| bool "Trusted Platform Module (TPM) Support in SPL" |
| depends on SPL_DM |
| imply SPL_CRC8 |
| help |
| This enables support for TPMs which can be used to provide security |
| features for your board. The TPM can be connected via LPC or I2C |
| and a sandbox TPM is provided for testing purposes. Use the 'tpm' |
| command to interactive the TPM. Driver model support is provided |
| for the low-level TPM interface, but only one TPM is supported at |
| a time by the TPM library. |
| |
| config TPL_TPM |
| bool "Trusted Platform Module (TPM) Support in TPL" |
| depends on TPL_DM |
| help |
| This enables support for TPMs which can be used to provide security |
| features for your board. The TPM can be connected via LPC or I2C |
| and a sandbox TPM is provided for testing purposes. Use the 'tpm' |
| command to interactive the TPM. Driver model support is provided |
| for the low-level TPM interface, but only one TPM is supported at |
| a time by the TPM library. |
| |
| config VPL_TPM |
| bool "Trusted Platform Module (TPM) Support in VPL" |
| depends on VPL_DM |
| help |
| This enables support for TPMs which can be used to provide security |
| features for your board. The TPM can be connected via LPC or I2C |
| and a sandbox TPM is provided for testing purposes. Use the 'tpm' |
| command to interactive the TPM. Driver model support is provided |
| for the low-level TPM interface, but only one TPM is supported at |
| a time by the TPM library. |
| |
| endmenu |
| |
| menu "Android Verified Boot" |
| |
| config LIBAVB |
| bool "Android Verified Boot 2.0 support" |
| depends on ANDROID_BOOT_IMAGE |
| help |
| This enables support of Android Verified Boot 2.0 which can be used |
| to assure the end user of the integrity of the software running on a |
| device. Introduces such features as boot chain of trust, rollback |
| protection etc. |
| |
| endmenu |
| |
| menu "Hashing Support" |
| |
| config BLAKE2 |
| bool "Enable BLAKE2 support" |
| help |
| This option enables support of hashing using BLAKE2B algorithm. |
| The hash is calculated in software. |
| The BLAKE2 algorithm produces a hash value (digest) between 1 and |
| 64 bytes. |
| |
| config SHA1 |
| bool "Enable SHA1 support" |
| help |
| This option enables support of hashing using SHA1 algorithm. |
| The hash is calculated in software. |
| The SHA1 algorithm produces a 160-bit (20-byte) hash value |
| (digest). |
| |
| config SHA256 |
| bool "Enable SHA256 support" |
| help |
| This option enables support of hashing using SHA256 algorithm. |
| The hash is calculated in software. |
| The SHA256 algorithm produces a 256-bit (32-byte) hash value |
| (digest). |
| |
| config SHA512 |
| bool "Enable SHA512 support" |
| default y if TI_SECURE_DEVICE && FIT_SIGNATURE |
| help |
| This option enables support of hashing using SHA512 algorithm. |
| The hash is calculated in software. |
| The SHA512 algorithm produces a 512-bit (64-byte) hash value |
| (digest). |
| |
| config SHA384 |
| bool "Enable SHA384 support" |
| select SHA512 |
| help |
| This option enables support of hashing using SHA384 algorithm. |
| The hash is calculated in software. This is also selects SHA512, |
| because these implementations share the bulk of the code.. |
| The SHA384 algorithm produces a 384-bit (48-byte) hash value |
| (digest). |
| |
| config SHA_HW_ACCEL |
| bool "Enable hardware acceleration for SHA hash functions" |
| help |
| This option enables hardware acceleration for the SHA1 and SHA256 |
| hashing algorithms. This affects the 'hash' command and also the |
| hash_lookup_algo() function. |
| |
| if SPL |
| |
| config SPL_CRC32 |
| bool "Enable CRC32 support in SPL" |
| default y if SPL_LEGACY_IMAGE_SUPPORT || SPL_EFI_PARTITION |
| default y if SPL_ENV_SUPPORT || TPL_BLOBLIST |
| help |
| This option enables support of hashing using CRC32 algorithm. |
| The CRC32 algorithm produces 32-bit checksum value. For FIT |
| images, this is the least secure type of checksum, suitable for |
| detected accidental image corruption. For secure applications you |
| should consider SHA256 or SHA384. |
| |
| config SPL_SHA1 |
| bool "Enable SHA1 support in SPL" |
| default y if SHA1 |
| help |
| This option enables support of hashing using SHA1 algorithm. |
| The hash is calculated in software. |
| The SHA1 algorithm produces a 160-bit (20-byte) hash value |
| (digest). |
| |
| config SPL_SHA256 |
| bool "Enable SHA256 support in SPL" |
| default y if SHA256 |
| help |
| This option enables support of hashing using SHA256 algorithm. |
| The hash is calculated in software. |
| The SHA256 algorithm produces a 256-bit (32-byte) hash value |
| (digest). |
| |
| config SPL_SHA512 |
| bool "Enable SHA512 support in SPL" |
| default y if SHA512 |
| help |
| This option enables support of hashing using SHA512 algorithm. |
| The hash is calculated in software. |
| The SHA512 algorithm produces a 512-bit (64-byte) hash value |
| (digest). |
| |
| config SPL_SHA384 |
| bool "Enable SHA384 support in SPL" |
| default y if SHA384 |
| select SPL_SHA512 |
| help |
| This option enables support of hashing using SHA384 algorithm. |
| The hash is calculated in software. This is also selects SHA512, |
| because these implementations share the bulk of the code.. |
| The SHA384 algorithm produces a 384-bit (48-byte) hash value |
| (digest). |
| |
| config SPL_SHA_HW_ACCEL |
| bool "Enable hardware acceleration for SHA hash functions" |
| default y if SHA_HW_ACCEL |
| help |
| This option enables hardware acceleration for the SHA1 and SHA256 |
| hashing algorithms. This affects the 'hash' command and also the |
| hash_lookup_algo() function. |
| |
| config SPL_SHA_PROG_HW_ACCEL |
| bool "Enable Progressive hashing support using hardware in SPL" |
| depends on SHA_PROG_HW_ACCEL |
| default y |
| help |
| This option enables hardware-acceleration for SHA progressive |
| hashing. |
| Data can be streamed in a block at a time and the hashing is |
| performed in hardware. |
| |
| endif |
| |
| config VPL_SHA1 |
| bool "Enable SHA1 support in VPL" |
| depends on VPL |
| default y if SHA1 |
| help |
| This option enables support of hashing using SHA1 algorithm. |
| The hash is calculated in software. |
| The SHA1 algorithm produces a 160-bit (20-byte) hash value |
| (digest). |
| |
| config VPL_SHA256 |
| bool "Enable SHA256 support in VPL" |
| depends on VPL |
| default y if SHA256 |
| help |
| This option enables support of hashing using SHA256 algorithm. |
| The hash is calculated in software. |
| The SHA256 algorithm produces a 256-bit (32-byte) hash value |
| (digest). |
| |
| if SHA_HW_ACCEL |
| |
| config SHA512_HW_ACCEL |
| bool "Enable hardware acceleration for SHA512" |
| depends on SHA512 |
| help |
| This option enables hardware acceleration for the SHA384 and SHA512 |
| hashing algorithms. This affects the 'hash' command and also the |
| hash_lookup_algo() function. |
| |
| config SHA_PROG_HW_ACCEL |
| bool "Enable Progressive hashing support using hardware" |
| help |
| This option enables hardware-acceleration for SHA progressive |
| hashing. |
| Data can be streamed in a block at a time and the hashing is |
| performed in hardware. |
| |
| endif |
| |
| config MD5 |
| bool "Support MD5 algorithm" |
| help |
| This option enables MD5 support. MD5 is an algorithm designed |
| in 1991 that produces a 16-byte digest (or checksum) from its input |
| data. It has a number of vulnerabilities which preclude its use in |
| security applications, but it can be useful for providing a quick |
| checksum of a block of data. |
| |
| config SPL_MD5 |
| bool "Support MD5 algorithm in SPL" |
| depends on SPL |
| help |
| This option enables MD5 support in SPL. MD5 is an algorithm designed |
| in 1991 that produces a 16-byte digest (or checksum) from its input |
| data. It has a number of vulnerabilities which preclude its use in |
| security applications, but it can be useful for providing a quick |
| checksum of a block of data. |
| |
| config CRC8 |
| def_bool y |
| help |
| Enables CRC8 support in U-Boot. This is normally required. CRC8 is |
| a simple and fast checksumming algorithm which does a bytewise |
| checksum with feedback to produce an 8-bit result. The code is small |
| and it does not require a lookup table (unlike CRC32). |
| |
| config SPL_CRC8 |
| bool "Support CRC8 in SPL" |
| depends on SPL |
| help |
| Enables CRC8 support in SPL. This is not normally required. CRC8 is |
| a simple and fast checksumming algorithm which does a bytewise |
| checksum with feedback to produce an 8-bit result. The code is small |
| and it does not require a lookup table (unlike CRC32). |
| |
| config SPL_CRC16 |
| bool "Support CRC16 in SPL" |
| depends on SPL |
| help |
| Enables CRC16 support in SPL. This is not normally required. |
| |
| config CRC32 |
| def_bool y |
| help |
| Enables CRC32 support in U-Boot. This is normally required. |
| |
| config CRC32C |
| bool |
| |
| config XXHASH |
| bool |
| |
| endmenu |
| |
| menu "Compression Support" |
| |
| config LZ4 |
| bool "Enable LZ4 decompression support" |
| help |
| If this option is set, support for LZ4 compressed images |
| is included. The LZ4 algorithm can run in-place as long as the |
| compressed image is loaded to the end of the output buffer, and |
| trades lower compression ratios for much faster decompression. |
| |
| NOTE: This implements the release version of the LZ4 frame |
| format as generated by default by the 'lz4' command line tool. |
| This is not the same as the outdated, less efficient legacy |
| frame format currently (2015) implemented in the Linux kernel |
| (generated by 'lz4 -l'). The two formats are incompatible. |
| |
| config LZMA |
| bool "Enable LZMA decompression support" |
| help |
| This enables support for LZMA (Lempel-Ziv-Markov chain algorithm), |
| a dictionary compression algorithm that provides a high compression |
| ratio and fairly fast decompression speed. See also |
| CONFIG_CMD_LZMADEC which provides a decode command. |
| |
| config LZO |
| bool "Enable LZO decompression support" |
| help |
| This enables support for the LZO compression algorithm. |
| |
| config GZIP |
| bool "Enable gzip decompression support" |
| select ZLIB |
| default y |
| help |
| This enables support for GZIP compression algorithm. |
| |
| config ZLIB_UNCOMPRESS |
| bool "Enables zlib's uncompress() functionality" |
| help |
| This enables an extra zlib functionality: the uncompress() function, |
| which decompresses data from a buffer into another, knowing their |
| sizes. Unlike gunzip(), there is no header parsing. |
| |
| config GZIP_COMPRESSED |
| bool |
| select ZLIB |
| |
| config BZIP2 |
| bool "Enable bzip2 decompression support" |
| help |
| This enables support for BZIP2 compression algorithm. |
| |
| config ZLIB |
| bool |
| default y |
| help |
| This enables ZLIB compression lib. |
| |
| config ZSTD |
| bool "Enable Zstandard decompression support" |
| select XXHASH |
| help |
| This enables Zstandard decompression library. |
| |
| if ZSTD |
| |
| config ZSTD_LIB_MINIFY |
| bool "Minify Zstandard code" |
| default y |
| help |
| This disables various optional components and changes the |
| compilation flags to prioritize space-saving. |
| |
| For detailed info, see zstd's lib/README.md |
| |
| https://github.com/facebook/zstd/blob/dev/lib/README.md |
| |
| endif |
| |
| config SPL_BZIP2 |
| bool "Enable bzip2 decompression support for SPL build" |
| depends on SPL |
| help |
| This enables support for bzip2 compression algorithm for SPL boot. |
| |
| config SPL_LZ4 |
| bool "Enable LZ4 decompression support in SPL" |
| depends on SPL |
| help |
| This enables support for the LZ4 decompression algorithm in SPL. LZ4 |
| is a lossless data compression algorithm that is focused on |
| fast compression and decompression speed. It belongs to the LZ77 |
| family of byte-oriented compression schemes. |
| |
| config SPL_LZMA |
| bool "Enable LZMA decompression support for SPL build" |
| depends on SPL |
| help |
| This enables support for LZMA compression algorithm for SPL boot. |
| |
| config VPL_LZMA |
| bool "Enable LZMA decompression support for VPL build" |
| default y if LZMA |
| help |
| This enables support for LZMA compression algorithm for VPL boot. |
| |
| config SPL_LZO |
| bool "Enable LZO decompression support in SPL" |
| depends on SPL |
| help |
| This enables support for LZO compression algorithm in the SPL. |
| |
| config SPL_GZIP |
| bool "Enable gzip decompression support for SPL build" |
| select SPL_ZLIB |
| help |
| This enables support for the GZIP compression algorithm for SPL boot. |
| |
| config SPL_ZLIB |
| bool |
| help |
| This enables compression lib for SPL boot. |
| |
| config SPL_ZSTD |
| bool "Enable Zstandard decompression support in SPL" |
| depends on SPL |
| select XXHASH |
| help |
| This enables Zstandard decompression library in the SPL. |
| |
| endmenu |
| |
| config ERRNO_STR |
| bool "Enable function for getting errno-related string message" |
| help |
| The function errno_str(int errno), returns a pointer to the errno |
| corresponding text message: |
| - if errno is null or positive number - a pointer to "Success" message |
| - if errno is negative - a pointer to errno related message |
| |
| config HEXDUMP |
| bool "Enable hexdump" |
| help |
| This enables functions for printing dumps of binary data. |
| |
| config SPL_HEXDUMP |
| bool "Enable hexdump in SPL" |
| depends on SPL && HEXDUMP |
| help |
| This enables functions for printing dumps of binary data in |
| SPL. |
| |
| config GETOPT |
| bool "Enable getopt" |
| help |
| This enables functions for parsing command-line options. |
| |
| config OF_LIBFDT |
| bool "Enable the FDT library" |
| default y if OF_CONTROL |
| help |
| This enables the FDT library (libfdt). It provides functions for |
| accessing binary device tree images in memory, such as adding and |
| removing nodes and properties, scanning through the tree and finding |
| particular compatible nodes. The library operates on a flattened |
| version of the device tree. |
| |
| config OF_LIBFDT_ASSUME_MASK |
| hex "Mask of conditions to assume for libfdt" |
| depends on OF_LIBFDT || FIT |
| default 0x0 |
| help |
| Use this to change the assumptions made by libfdt about the |
| device tree it is working with. A value of 0 means that no assumptions |
| are made, and libfdt is able to deal with malicious data. A value of |
| 0xff means all assumptions are made and any invalid data may cause |
| unsafe execution. See FDT_ASSUME_PERFECT, etc. in libfdt_internal.h |
| |
| config OF_LIBFDT_OVERLAY |
| bool "Enable the FDT library overlay support" |
| depends on OF_LIBFDT |
| default y if ARCH_OMAP2PLUS || ARCH_KEYSTONE |
| help |
| This enables the FDT library (libfdt) overlay support. |
| |
| config SYS_FDT_PAD |
| hex "Maximum size of the FDT memory area passeed to the OS" |
| depends on OF_LIBFDT |
| default 0x13000 if FMAN_ENET || QE || U_QE |
| default 0x3000 |
| help |
| During OS boot, we allocate a region of memory within the bootmap |
| for the FDT. This is the size that we will expand the FDT that we |
| are using will be extended to be, in bytes. |
| |
| config SPL_OF_LIBFDT |
| bool "Enable the FDT library for SPL" |
| depends on SPL_LIBGENERIC_SUPPORT |
| default y if SPL_OF_CONTROL |
| help |
| This enables the FDT library (libfdt). It provides functions for |
| accessing binary device tree images in memory, such as adding and |
| removing nodes and properties, scanning through the tree and finding |
| particular compatible nodes. The library operates on a flattened |
| version of the device tree. |
| |
| config SPL_OF_LIBFDT_ASSUME_MASK |
| hex "Mask of conditions to assume for libfdt" |
| depends on SPL_OF_LIBFDT || (FIT && SPL) |
| default 0xff |
| help |
| Use this to change the assumptions made by libfdt in SPL about the |
| device tree it is working with. A value of 0 means that no assumptions |
| are made, and libfdt is able to deal with malicious data. A value of |
| 0xff means all assumptions are made and any invalid data may cause |
| unsafe execution. See FDT_ASSUME_PERFECT, etc. in libfdt_internal.h |
| |
| config TPL_OF_LIBFDT |
| bool "Enable the FDT library for TPL" |
| depends on TPL_LIBGENERIC_SUPPORT |
| default y if TPL_OF_CONTROL |
| help |
| This enables the FDT library (libfdt). It provides functions for |
| accessing binary device tree images in memory, such as adding and |
| removing nodes and properties, scanning through the tree and finding |
| particular compatible nodes. The library operates on a flattened |
| version of the device tree. |
| |
| config TPL_OF_LIBFDT_ASSUME_MASK |
| hex "Mask of conditions to assume for libfdt" |
| depends on TPL_OF_LIBFDT || (FIT && TPL) |
| default 0xff |
| help |
| Use this to change the assumptions made by libfdt in TPL about the |
| device tree it is working with. A value of 0 means that no assumptions |
| are made, and libfdt is able to deal with malicious data. A value of |
| 0xff means all assumptions are made and any invalid data may cause |
| unsafe execution. See FDT_ASSUME_PERFECT, etc. in libfdt_internal.h |
| |
| config VPL_OF_LIBFDT |
| bool "Enable the FDT library for VPL" |
| depends on VPL |
| default y if VPL_OF_CONTROL && !VPL_OF_PLATDATA |
| help |
| This enables the FDT library (libfdt). It provides functions for |
| accessing binary device tree images in memory, such as adding and |
| removing nodes and properties, scanning through the tree and finding |
| particular compatible nodes. The library operates on a flattened |
| version of the device tree. |
| |
| config VPL_OF_LIBFDT_ASSUME_MASK |
| hex "Mask of conditions to assume for libfdt" |
| depends on VPL_OF_LIBFDT || (FIT && VPL) |
| default 0xff |
| help |
| Use this to change the assumptions made by libfdt in SPL about the |
| device tree it is working with. A value of 0 means that no assumptions |
| are made, and libfdt is able to deal with malicious data. A value of |
| 0xff means all assumptions are made and any invalid data may cause |
| unsafe execution. See FDT_ASSUME_PERFECT, etc. in libfdt_internal.h |
| |
| menu "System tables" |
| depends on (!EFI && !SYS_COREBOOT) || (ARM && EFI_LOADER) |
| |
| config BLOBLIST_TABLES |
| bool "Put tables in a bloblist" |
| depends on X86 && BLOBLIST |
| help |
| Normally tables are placed at address 0xf0000 and can be up to 64KB |
| long. With this option, tables are instead placed in the bloblist |
| with a pointer from 0xf0000. The size can then be larger and the |
| tables can be placed high in memory. |
| |
| config GENERATE_SMBIOS_TABLE |
| bool "Generate an SMBIOS (System Management BIOS) table" |
| depends on SMBIOS |
| default y |
| help |
| The System Management BIOS (SMBIOS) specification addresses how |
| motherboard and system vendors present management information about |
| their products in a standard format by extending the BIOS interface |
| on Intel architecture systems. |
| |
| Check http://www.dmtf.org/standards/smbios for details. |
| |
| See also SYSINFO_SMBIOS which allows SMBIOS values to be provided in |
| the devicetree. |
| |
| endmenu |
| |
| config LIB_RATIONAL |
| bool "enable continued fraction calculation routines" |
| |
| config SPL_LIB_RATIONAL |
| bool "enable continued fraction calculation routines for SPL" |
| depends on SPL |
| |
| config ASN1_COMPILER |
| bool |
| help |
| ASN.1 (Abstract Syntax Notation One) is a standard interface |
| description language for defining data structures that can be |
| serialized and deserialized in a cross-platform way. It is |
| broadly used in telecommunications and computer networking, |
| and especially in cryptography (https://en.wikipedia.org/wiki/ASN.1). |
| This option enables the support of the asn1 compiler. |
| |
| config ASN1_DECODER |
| bool |
| help |
| ASN.1 (Abstract Syntax Notation One) is a standard interface |
| description language for defining data structures that can be |
| serialized and deserialized in a cross-platform way. It is |
| broadly used in telecommunications and computer networking, |
| and especially in cryptography (https://en.wikipedia.org/wiki/ASN.1). |
| This option enables the support of the asn1 decoder. |
| |
| config SPL_ASN1_DECODER |
| bool |
| help |
| ASN.1 (Abstract Syntax Notation One) is a standard interface |
| description language for defining data structures that can be |
| serialized and deserialized in a cross-platform way. It is |
| broadly used in telecommunications and computer networking, |
| and especially in cryptography (https://en.wikipedia.org/wiki/ASN.1). |
| This option enables the support of the asn1 decoder in the SPL. |
| |
| config OID_REGISTRY |
| bool |
| help |
| In computing, object identifiers or OIDs are an identifier mechanism |
| standardized by the International Telecommunication Union (ITU) and |
| ISO/IEC for naming any object, concept, or "thing" with a globally |
| unambiguous persistent name (https://en.wikipedia.org/wiki/Object_identifier). |
| Enable fast lookup object identifier registry. |
| |
| config SPL_OID_REGISTRY |
| bool |
| help |
| In computing, object identifiers or OIDs are an identifier mechanism |
| standardized by the International Telecommunication Union (ITU) and |
| ISO/IEC for naming any object, concept, or "thing" with a globally |
| unambiguous persistent name (https://en.wikipedia.org/wiki/Object_identifier). |
| Enable fast lookup object identifier registry in the SPL. |
| |
| config SMBIOS |
| bool "SMBIOS support" |
| depends on X86 || EFI_LOADER |
| default y |
| select LAST_STAGE_INIT |
| help |
| Indicates that this platform can support System Management BIOS |
| (SMBIOS) tables. These provide various pieces of information about |
| the board, such as the manufacturer and the model name. |
| |
| See GENERATE_SMBIOS_TABLE which controls whether U-Boot actually |
| creates these tables, rather than them coming from a previous firmware |
| stage. |
| |
| config SMBIOS_PARSER |
| bool "SMBIOS parser" |
| help |
| A simple parser for SMBIOS data. |
| |
| source "lib/efi/Kconfig" |
| source "lib/efi_loader/Kconfig" |
| source "lib/optee/Kconfig" |
| |
| config TEST_FDTDEC |
| bool "enable fdtdec test" |
| depends on OF_LIBFDT |
| |
| config LIB_DATE |
| bool |
| |
| config LIB_ELF |
| bool |
| help |
| Support basic elf loading/validating functions. |
| This supports for 32 bit and 64 bit versions. |
| |
| config LMB |
| bool "Enable the logical memory blocks library (lmb)" |
| default y if ARC || ARM || M68K || MICROBLAZE || MIPS || \ |
| NIOS2 || PPC || RISCV || SANDBOX || SH || X86 || XTENSA |
| select ARCH_MISC_INIT if PPC |
| help |
| Support the library logical memory blocks. This will require |
| a malloc() implementation for defining the data structures |
| needed for maintaining the LMB memory map. |
| |
| config SPL_LMB |
| bool "Enable LMB module for SPL" |
| depends on SPL && SPL_FRAMEWORK && SPL_SYS_MALLOC |
| help |
| Enable support for Logical Memory Block library routines in |
| SPL. This will require a malloc() implementation for defining |
| the data structures needed for maintaining the LMB memory map. |
| |
| config PHANDLE_CHECK_SEQ |
| bool "Enable phandle check while getting sequence number" |
| help |
| When there are multiple device tree nodes with same name, |
| enable this config option to distinguish them using |
| phandles in fdtdec_get_alias_seq() function. |
| |
| endmenu |
| |
| source "lib/fwu_updates/Kconfig" |