1menu "SPL / TPL" 2 3config SUPPORT_SPL 4 bool 5 6config SUPPORT_TPL 7 bool 8 9config SPL 10 bool 11 depends on SUPPORT_SPL 12 prompt "Enable SPL" 13 help 14 If you want to build SPL as well as the normal image, say Y. 15 16config SPL_SYS_MALLOC_SIMPLE 17 bool 18 depends on SPL 19 prompt "Only use malloc_simple functions in the SPL" 20 help 21 Say Y here to only use the *_simple malloc functions from 22 malloc_simple.c, rather then using the versions from dlmalloc.c; 23 this will make the SPL binary smaller at the cost of more heap 24 usage as the *_simple malloc functions do not re-use free-ed mem. 25 26config SPL_STACK_R 27 depends on SPL 28 bool "Enable SDRAM location for SPL stack" 29 help 30 SPL starts off execution in SRAM and thus typically has only a small 31 stack available. Since SPL sets up DRAM while in its board_init_f() 32 function, it is possible for the stack to move there before 33 board_init_r() is reached. This option enables a special SDRAM 34 location for the SPL stack. U-Boot SPL switches to this after 35 board_init_f() completes, and before board_init_r() starts. 36 37config SPL_STACK_R_ADDR 38 depends on SPL_STACK_R 39 hex "SDRAM location for SPL stack" 40 help 41 Specify the address in SDRAM for the SPL stack. This will be set up 42 before board_init_r() is called. 43 44config SPL_STACK_R_MALLOC_SIMPLE_LEN 45 depends on SPL_STACK_R && SPL_SYS_MALLOC_SIMPLE 46 hex "Size of malloc_simple heap after switching to DRAM SPL stack" 47 default 0x100000 48 help 49 Specify the amount of the stack to use as memory pool for 50 malloc_simple after switching the stack to DRAM. This may be set 51 to give board_init_r() a larger heap then the initial heap in 52 SRAM which is limited to SYS_MALLOC_F_LEN bytes. 53 54config SPL_SEPARATE_BSS 55 depends on SPL 56 bool "BSS section is in a different memory region from text" 57 help 58 Some platforms need a large BSS region in SPL and can provide this 59 because RAM is already set up. In this case BSS can be moved to RAM. 60 This option should then be enabled so that the correct device tree 61 location is used. Normally we put the device tree at the end of BSS 62 but with this option enabled, it goes at _image_binary_end. 63 64config SPL_DISPLAY_PRINT 65 depends on SPL 66 bool "Display a board-specific message in SPL" 67 help 68 If this option is enabled, U-Boot will call the function 69 spl_display_print() immediately after displaying the SPL console 70 banner ("U-Boot SPL ..."). This function should be provided by 71 the board. 72 73config TPL 74 bool 75 depends on SPL && SUPPORT_TPL 76 prompt "Enable TPL" 77 help 78 If you want to build TPL as well as the normal image and SPL, say Y. 79 80config SPL_CRC32_SUPPORT 81 bool "Support CRC32" 82 depends on SPL_FIT 83 help 84 Enable this to support CRC32 in FIT images within SPL. This is a 85 32-bit checksum value that can be used to verify images. This is 86 the least secure type of checksum, suitable for detected 87 accidental image corruption. For secure applications you should 88 consider SHA1 or SHA256. 89 90config SPL_MD5_SUPPORT 91 bool "Support MD5" 92 depends on SPL_FIT 93 help 94 Enable this to support MD5 in FIT images within SPL. An MD5 95 checksum is a 128-bit hash value used to check that the image 96 contents have not been corrupted. Note that MD5 is not considered 97 secure as it is possible (with a brute-force attack) to adjust the 98 image while still retaining the same MD5 hash value. For secure 99 applications where images may be changed maliciously, you should 100 consider SHA1 or SHA256. 101 102config SPL_SHA1_SUPPORT 103 bool "Support SHA1" 104 depends on SPL_FIT 105 help 106 Enable this to support SHA1 in FIT images within SPL. A SHA1 107 checksum is a 160-bit (20-byte) hash value used to check that the 108 image contents have not been corrupted or maliciously altered. 109 While SHA1 is fairly secure it is coming to the end of its life 110 due to the expanding computing power avaiable to brute-force 111 attacks. For more security, consider SHA256. 112 113config SPL_SHA256_SUPPORT 114 bool "Support SHA256" 115 depends on SPL_FIT 116 help 117 Enable this to support SHA256 in FIT images within SPL. A SHA256 118 checksum is a 256-bit (32-byte) hash value used to check that the 119 image contents have not been corrupted. SHA256 is recommended for 120 use in secure applications since (as at 2016) there is no known 121 feasible attack that could produce a 'collision' with differing 122 input data. Use this for the highest security. Note that only the 123 SHA256 variant is supported: SHA512 and others are not currently 124 supported in U-Boot. 125 126config SPL_CRYPTO_SUPPORT 127 bool "Support crypto drivers" 128 depends on SPL 129 help 130 Enable crypto drivers in SPL. These drivers can be used to 131 accelerate secure boot processing in secure applications. Enable 132 this option to build the drivers in drivers/crypto as part of an 133 SPL build. 134 135config SPL_HASH_SUPPORT 136 bool "Support hashing drivers" 137 depends on SPL 138 help 139 Enable hashing drivers in SPL. These drivers can be used to 140 accelerate secure boot processing in secure applications. Enable 141 this option to build system-specific drivers for hash acceleration 142 as part of an SPL build. 143 144config SPL_DMA_SUPPORT 145 bool "Support DMA drivers" 146 depends on SPL 147 help 148 Enable DMA (direct-memory-access) drivers in SPL. These drivers 149 can be used to handle memory-to-peripheral data transfer without 150 the CPU moving the data. Enable this option to build the drivers 151 in drivers/dma as part of an SPL build. 152 153config SPL_DRIVERS_MISC_SUPPORT 154 bool "Support misc drivers" 155 depends on SPL 156 help 157 Enable miscellaneous drivers in SPL. These drivers perform various 158 tasks that don't fall nicely into other categories, Enable this 159 option to build the drivers in drivers/misc as part of an SPL 160 build, for those that support building in SPL (not all drivers do). 161 162config SPL_ENV_SUPPORT 163 bool "Support an environment" 164 depends on SPL 165 help 166 Enable environment support in SPL. The U-Boot environment provides 167 a number of settings (essentially name/value pairs) which can 168 control many aspects of U-Boot's operation. Normally this is not 169 needed in SPL as it has a much simpler task with less 170 configuration. But some boards use this to support 'Falcon' boot 171 on EXT2 and FAT, where SPL boots directly into Linux without 172 starting U-Boot first. Enabling this option will make getenv() 173 and setenv() available in SPL. 174 175config SPL_SAVEENV 176 bool "Support save environment" 177 depends on SPL && SPL_ENV_SUPPORT 178 help 179 Enable save environment support in SPL after setenv. By default 180 the saveenv option is not provided in SPL, but some boards need 181 this support in 'Falcon' boot, where SPL need to boot from 182 different images based on environment variable set by OS. For 183 example OS may set "reboot_image" environment variable to 184 "recovery" inorder to boot recovery image by SPL. The SPL read 185 "reboot_image" and act accordingly and change the reboot_image 186 to default mode using setenv and save the environemnt. 187 188config SPL_ETH_SUPPORT 189 bool "Support Ethernet" 190 depends on SPL_ENV_SUPPORT 191 help 192 Enable access to the network subsystem and associated Ethernet 193 drivers in SPL. This permits SPL to load U-Boot over an Ethernet 194 link rather than from an on-board peripheral. Environment support 195 is required since the network stack uses a number of environment 196 variables. See also SPL_NET_SUPPORT. 197 198config SPL_EXT_SUPPORT 199 bool "Support EXT filesystems" 200 depends on SPL 201 help 202 Enable support for EXT2/3/4 filesystems with SPL. This permits 203 U-Boot (or Linux in Falcon mode) to be loaded from an EXT 204 filesystem from within SPL. Support for the underlying block 205 device (e.g. MMC or USB) must be enabled separately. 206 207config SPL_FAT_SUPPORT 208 bool "Support FAT filesystems" 209 depends on SPL 210 help 211 Enable support for FAT and VFAT filesystems with SPL. This 212 permits U-Boot (or Linux in Falcon mode) to be loaded from a FAT 213 filesystem from within SPL. Support for the underlying block 214 device (e.g. MMC or USB) must be enabled separately. 215 216config SPL_FPGA_SUPPORT 217 bool "Support FPGAs" 218 depends on SPL 219 help 220 Enable support for FPGAs in SPL. Field-programmable Gate Arrays 221 provide software-configurable hardware which is typically used to 222 implement peripherals (such as UARTs, LCD displays, MMC) or 223 accelerate custom processing functions, such as image processing 224 or machine learning. Sometimes it is useful to program the FPGA 225 as early as possible during boot, and this option can enable that 226 within SPL. 227 228config SPL_GPIO_SUPPORT 229 bool "Support GPIO" 230 depends on SPL 231 help 232 Enable support for GPIOs (General-purpose Input/Output) in SPL. 233 GPIOs allow U-Boot to read the state of an input line (high or 234 low) and set the state of an output line. This can be used to 235 drive LEDs, control power to various system parts and read user 236 input. GPIOs can be useful in SPL to enable a 'sign-of-life' LED, 237 for example. Enable this option to build the drivers in 238 drivers/gpio as part of an SPL build. 239 240config SPL_I2C_SUPPORT 241 bool "Support I2C" 242 depends on SPL 243 help 244 Enable support for the I2C (Inter-Integrated Circuit) bus in SPL. 245 I2C works with a clock and data line which can be driven by a 246 one or more masters or slaves. It is a fairly complex bus but is 247 widely used as it only needs two lines for communication. Speeds of 248 400kbps are typical but up to 3.4Mbps is supported by some 249 hardware. I2C can be useful in SPL to configure power management 250 ICs (PMICs) before raising the CPU clock speed, for example. 251 Enable this option to build the drivers in drivers/i2c as part of 252 an SPL build. 253 254config SPL_LIBCOMMON_SUPPORT 255 bool "Support common libraries" 256 depends on SPL 257 help 258 Enable support for common U-Boot libraries within SPL. These 259 libraries include common code to deal with U-Boot images, 260 environment and USB, for example. This option is enabled on many 261 boards. Enable this option to build the code in common/ as part of 262 an SPL build. 263 264config SPL_LIBDISK_SUPPORT 265 bool "Support disk paritions" 266 depends on SPL 267 help 268 Enable support for disk partitions within SPL. 'Disk' is something 269 of a misnomer as it includes non-spinning media such as flash (as 270 used in MMC and USB sticks). Partitions provide a way for a disk 271 to be split up into separate regions, with a partition table placed 272 at the start or end which describes the location and size of each 273 'partition'. These partitions are typically uses as individual block 274 devices, typically with an EXT2 or FAT filesystem in each. This 275 option enables whatever partition support has been enabled in 276 U-Boot to also be used in SPL. It brings in the code in disk/. 277 278config SPL_LIBGENERIC_SUPPORT 279 bool "Support generic libraries" 280 depends on SPL 281 help 282 Enable support for generic U-Boot libraries within SPL. These 283 libraries include generic code to deal with device tree, hashing, 284 printf(), compression and the like. This option is enabled on many 285 boards. Enable this option to build the code in lib/ as part of an 286 SPL build. 287 288config SPL_MMC_SUPPORT 289 bool "Support MMC" 290 depends on SPL 291 help 292 Enable support for MMC (Multimedia Card) within SPL. This enables 293 the MMC protocol implementation and allows any enabled drivers to 294 be used within SPL. MMC can be used with or without disk partition 295 support depending on the application (SPL_LIBDISK_SUPPORT). Enable 296 this option to build the drivers in drivers/mmc as part of an SPL 297 build. 298 299config SPL_MPC8XXX_INIT_DDR_SUPPORT 300 bool "Support MPC8XXX DDR init" 301 depends on SPL 302 help 303 Enable support for DDR-SDRAM (double-data-rate synchronous dynamic 304 random-access memory) on the MPC8XXX family within SPL. This 305 allows DRAM to be set up before loading U-Boot into that DRAM, 306 where it can run. 307 308config SPL_MTD_SUPPORT 309 bool "Support MTD drivers" 310 depends on SPL 311 help 312 Enable support for MTD (Memory Technology Device) within SPL. MTD 313 provides a block interface over raw NAND and can also be used with 314 SPI flash. This allows SPL to load U-Boot from supported MTD 315 devices. See SPL_NAND_SUPPORT and SPL_ONENAND_SUPPORT for how 316 to enable specific MTD drivers. 317 318config SPL_MUSB_NEW_SUPPORT 319 bool "Support new Mentor Graphics USB" 320 depends on SPL 321 help 322 Enable support for Mentor Graphics USB in SPL. This is a new 323 driver used by some boards. Enable this option to build 324 the drivers in drivers/usb/musb-new as part of an SPL build. The 325 old drivers are in drivers/usb/musb. 326 327config SPL_NAND_SUPPORT 328 bool "Support NAND flash" 329 depends on SPL 330 help 331 Enable support for NAND (Negative AND) flash in SPL. NAND flash 332 can be used to allow SPL to load U-Boot from supported devices. 333 This enables the drivers in drivers/mtd/nand as part of an SPL 334 build. 335 336config SPL_NET_SUPPORT 337 bool "Support networking" 338 depends on SPL 339 help 340 Enable support for network devices (such as Ethernet) in SPL. 341 This permits SPL to load U-Boot over a network link rather than 342 from an on-board peripheral. Environment support is required since 343 the network stack uses a number of environment variables. See also 344 SPL_ETH_SUPPORT. 345 346if SPL_NET_SUPPORT 347config SPL_NET_VCI_STRING 348 string "BOOTP Vendor Class Identifier string sent by SPL" 349 help 350 As defined by RFC 2132 the vendor class identifier field can be 351 sent by the client to identify the vendor type and configuration 352 of a client. This is often used in practice to allow for the DHCP 353 server to specify different files to load depending on if the ROM, 354 SPL or U-Boot itself makes the request 355endif # if SPL_NET_SUPPORT 356 357config SPL_NO_CPU_SUPPORT 358 bool "Drop CPU code in SPL" 359 depends on SPL 360 help 361 This is specific to the ARM926EJ-S CPU. It disables the standard 362 start.S start-up code, presumably so that a replacement can be 363 used on that CPU. You should not enable it unless you know what 364 you are doing. 365 366config SPL_NOR_SUPPORT 367 bool "Support NOR flash" 368 depends on SPL 369 help 370 Enable support for loading U-Boot from memory-mapped NOR (Negative 371 OR) flash in SPL. NOR flash is slow to write but fast to read, and 372 a memory-mapped device makes it very easy to access. Loading from 373 NOR is typically achieved with just a memcpy(). 374 375config SPL_ONENAND_SUPPORT 376 bool "Support OneNAND flash" 377 depends on SPL 378 help 379 Enable support for OneNAND (Negative AND) flash in SPL. OneNAND is 380 a type of NAND flash and therefore can be used to allow SPL to 381 load U-Boot from supported devices. This enables the drivers in 382 drivers/mtd/onenand as part of an SPL build. 383 384config SPL_OS_BOOT 385 bool "Activate Falcon Mode" 386 depends on SPL && !TI_SECURE_DEVICE 387 default n 388 help 389 Enable booting directly to an OS from SPL. 390 for more info read doc/README.falcon 391 392if SPL_OS_BOOT 393config SYS_OS_BASE 394 hex "addr, where OS is found" 395 depends on SPL && SPL_NOR_SUPPORT 396 help 397 Specify the address, where the OS image is found, which 398 gets booted. 399 400endif # SPL_OS_BOOT 401 402config SPL_POST_MEM_SUPPORT 403 bool "Support POST drivers" 404 depends on SPL 405 help 406 Enable support for POST (Power-on Self Test) in SPL. POST is a 407 procedure that checks that the hardware (CPU or board) appears to 408 be functionally correctly. It is a sanity check that can be 409 performed before booting. This enables the drivers in post/drivers 410 as part of an SPL build. 411 412config SPL_POWER_SUPPORT 413 bool "Support power drivers" 414 depends on SPL 415 help 416 Enable support for power control in SPL. This includes support 417 for PMICs (Power-management Integrated Circuits) and some of the 418 features provided by PMICs. In particular, voltage regulators can 419 be used to enable/disable power and vary its voltage. That can be 420 useful in SPL to turn on boot peripherals and adjust CPU voltage 421 so that the clock speed can be increased. This enables the drivers 422 in drivers/power, drivers/power/pmic and drivers/power/regulator 423 as part of an SPL build. 424 425config SPL_SATA_SUPPORT 426 bool "Support loading from SATA" 427 depends on SPL 428 help 429 Enable support for SATA (Serial AT attachment) in SPL. This allows 430 use of SATA devices such as hard drives and flash drivers for 431 loading U-Boot. SATA is used in higher-end embedded systems and 432 can provide higher performance than MMC , at somewhat higher 433 expense and power consumption. This enables loading from SATA 434 using a configured device. 435 436config SPL_SERIAL_SUPPORT 437 bool "Support serial" 438 depends on SPL 439 help 440 Enable support for serial in SPL. This allows use of a serial UART 441 for displaying messages while SPL is running. It also brings in 442 printf() and panic() functions. This should normally be enabled 443 unless there are space reasons not to. Even then, consider 444 enabling USE_TINY_PRINTF which is a small printf() version. 445 446config SPL_SPI_FLASH_SUPPORT 447 bool "Support SPI flash drivers" 448 depends on SPL 449 help 450 Enable support for using SPI flash in SPL, and loading U-Boot from 451 SPI flash. SPI flash (Serial Peripheral Bus flash) is named after 452 the SPI bus that is used to connect it to a system. It is a simple 453 but fast bidirectional 4-wire bus (clock, chip select and two data 454 lines). This enables the drivers in drivers/mtd/spi as part of an 455 SPL build. This normally requires SPL_SPI_SUPPORT. 456 457config SPL_SPI_SUPPORT 458 bool "Support SPI drivers" 459 depends on SPL 460 help 461 Enable support for using SPI in SPL. This is used for connecting 462 to SPI flash for loading U-Boot. See SPL_SPI_FLASH_SUPPORT for 463 more details on that. The SPI driver provides the transport for 464 data between the SPI flash and the CPU. This option can be used to 465 enable SPI drivers that are needed for other purposes also, such 466 as a SPI PMIC. 467 468config SPL_USBETH_SUPPORT 469 bool "Support USB Ethernet drivers" 470 depends on SPL 471 help 472 Enable access to the USB network subsystem and associated 473 drivers in SPL. This permits SPL to load U-Boot over a 474 USB-connected Ethernet link (such as a USB Ethernet dongle) rather 475 than from an onboard peripheral. Environment support is required 476 since the network stack uses a number of environment variables. 477 See also SPL_NET_SUPPORT and SPL_ETH_SUPPORT. 478 479config SPL_USB_HOST_SUPPORT 480 bool "Support USB host drivers" 481 depends on SPL 482 help 483 Enable access to USB (Universal Serial Bus) host devices so that 484 SPL can load U-Boot from a connected USB peripheral, such as a USB 485 flash stick. While USB takes a little longer to start up than most 486 buses, it is very flexible since many different types of storage 487 device can be attached. This option enables the drivers in 488 drivers/usb/host as part of an SPL build. 489 490config SPL_USB_SUPPORT 491 bool "Support loading from USB" 492 depends on SPL_USB_HOST_SUPPORT 493 help 494 Enable support for USB devices in SPL. This allows use of USB 495 devices such as hard drives and flash drivers for loading U-Boot. 496 The actual drivers are enabled separately using the normal U-Boot 497 config options. This enables loading from USB using a configured 498 device. 499 500config SPL_WATCHDOG_SUPPORT 501 bool "Support watchdog drivers" 502 depends on SPL 503 help 504 Enable support for watchdog drivers in SPL. A watchdog is 505 typically a hardware peripheral which can reset the system when it 506 detects no activity for a while (such as a software crash). This 507 enables the drivers in drivers/watchdog as part of an SPL build. 508 509config SPL_YMODEM_SUPPORT 510 bool "Support loading using Ymodem" 511 depends on SPL 512 help 513 While loading from serial is slow it can be a useful backup when 514 there is no other option. The Ymodem protocol provides a reliable 515 means of transmitting U-Boot over a serial line for using in SPL, 516 with a checksum to ensure correctness. 517 518config TPL_ENV_SUPPORT 519 bool "Support an environment" 520 depends on TPL 521 help 522 Enable environment support in TPL. See SPL_ENV_SUPPORT for details. 523 524config TPL_I2C_SUPPORT 525 bool "Support I2C" 526 depends on TPL 527 help 528 Enable support for the I2C bus in SPL. See SPL_I2C_SUPPORT for 529 details. 530 531config TPL_LIBCOMMON_SUPPORT 532 bool "Support common libraries" 533 depends on TPL 534 help 535 Enable support for common U-Boot libraries within TPL. See 536 SPL_LIBCOMMON_SUPPORT for details. 537 538config TPL_LIBGENERIC_SUPPORT 539 bool "Support generic libraries" 540 depends on TPL 541 help 542 Enable support for generic U-Boot libraries within TPL. See 543 SPL_LIBGENERIC_SUPPORT for details. 544 545config TPL_MPC8XXX_INIT_DDR_SUPPORT 546 bool "Support MPC8XXX DDR init" 547 depends on TPL 548 help 549 Enable support for DDR-SDRAM on the MPC8XXX family within TPL. See 550 SPL_MPC8XXX_INIT_DDR_SUPPORT for details. 551 552config TPL_MMC_SUPPORT 553 bool "Support MMC" 554 depends on TPL 555 help 556 Enable support for MMC within TPL. See SPL_MMC_SUPPORT for details. 557 558config TPL_NAND_SUPPORT 559 bool "Support NAND flash" 560 depends on TPL 561 help 562 Enable support for NAND in SPL. See SPL_NAND_SUPPORT for details. 563 564config TPL_SERIAL_SUPPORT 565 bool "Support serial" 566 depends on TPL 567 help 568 Enable support for serial in SPL. See SPL_SERIAL_SUPPORT for 569 details. 570 571config TPL_SPI_FLASH_SUPPORT 572 bool "Support SPI flash drivers" 573 depends on TPL 574 help 575 Enable support for using SPI flash in SPL. See SPL_SPI_FLASH_SUPPORT 576 for details. 577 578config TPL_SPI_SUPPORT 579 bool "Support SPI drivers" 580 depends on TPL 581 help 582 Enable support for using SPI in SPL. See SPL_SPI_SUPPORT for 583 details. 584 585endmenu 586