xref: /openbmc/u-boot/common/spl/Kconfig (revision 413ab5b0)
1menu "SPL / TPL"
2
3config SUPPORT_SPL
4	bool
5
6config SUPPORT_TPL
7	bool
8
9config SPL_DFU_NO_RESET
10	bool
11
12config SPL
13	bool
14	depends on SUPPORT_SPL
15	prompt "Enable SPL"
16	help
17	  If you want to build SPL as well as the normal image, say Y.
18
19if SPL
20
21config SPL_LDSCRIPT
22	string "Linker script for the SPL stage"
23	default "arch/$(ARCH)/cpu/u-boot-spl.lds"
24	depends on SPL
25	help
26	  The SPL stage will usually require a different linker-script
27	  (as it runs from a different memory region) than the regular
28	  U-Boot stage.	 Set this to the path of the linker-script to
29	  be used for SPL.
30
31config SPL_BOARD_INIT
32	bool "Call board-specific initialization in SPL"
33	help
34	  If this option is enabled, U-Boot will call the function
35	  spl_board_init() from board_init_r(). This function should be
36	  provided by the board.
37
38config SPL_BOOTROM_SUPPORT
39        bool "Support returning to the BOOTROM"
40	help
41	  Some platforms (e.g. the Rockchip RK3368) provide support in their
42	  ROM for loading the next boot-stage after performing basic setup
43	  from the SPL stage.
44
45	  Enable this option, to return to the BOOTROM through the
46	  BOOT_DEVICE_BOOTROM (or fall-through to the next boot device in the
47	  boot device list, if not implemented for a given board)
48
49config SPL_RAW_IMAGE_SUPPORT
50	bool "Support SPL loading and booting of RAW images"
51	default n if (ARCH_MX6 && (SPL_MMC_SUPPORT || SPL_SATA_SUPPORT))
52	default y if !TI_SECURE_DEVICE
53	help
54	  SPL will support loading and booting a RAW image when this option
55	  is y. If this is not set, SPL will move on to other available
56	  boot media to find a suitable image.
57
58config SPL_LEGACY_IMAGE_SUPPORT
59	bool "Support SPL loading and booting of Legacy images"
60	default y if !TI_SECURE_DEVICE
61	help
62	  SPL will support loading and booting Legacy images when this option
63	  is y. If this is not set, SPL will move on to other available
64	  boot media to find a suitable image.
65
66config SPL_SYS_MALLOC_SIMPLE
67	bool
68	prompt "Only use malloc_simple functions in the SPL"
69	help
70	  Say Y here to only use the *_simple malloc functions from
71	  malloc_simple.c, rather then using the versions from dlmalloc.c;
72	  this will make the SPL binary smaller at the cost of more heap
73	  usage as the *_simple malloc functions do not re-use free-ed mem.
74
75config TPL_SYS_MALLOC_SIMPLE
76	bool
77	prompt "Only use malloc_simple functions in the TPL"
78	help
79	  Say Y here to only use the *_simple malloc functions from
80	  malloc_simple.c, rather then using the versions from dlmalloc.c;
81	  this will make the TPL binary smaller at the cost of more heap
82	  usage as the *_simple malloc functions do not re-use free-ed mem.
83
84config SPL_STACK_R
85	bool "Enable SDRAM location for SPL stack"
86	help
87	  SPL starts off execution in SRAM and thus typically has only a small
88	  stack available. Since SPL sets up DRAM while in its board_init_f()
89	  function, it is possible for the stack to move there before
90	  board_init_r() is reached. This option enables a special SDRAM
91	  location for the SPL stack. U-Boot SPL switches to this after
92	  board_init_f() completes, and before board_init_r() starts.
93
94config SPL_STACK_R_ADDR
95	depends on SPL_STACK_R
96	hex "SDRAM location for SPL stack"
97	default 0x82000000 if ARCH_OMAP2PLUS
98	help
99	  Specify the address in SDRAM for the SPL stack. This will be set up
100	  before board_init_r() is called.
101
102config SPL_STACK_R_MALLOC_SIMPLE_LEN
103	depends on SPL_STACK_R && SPL_SYS_MALLOC_SIMPLE
104	hex "Size of malloc_simple heap after switching to DRAM SPL stack"
105	default 0x100000
106	help
107	  Specify the amount of the stack to use as memory pool for
108	  malloc_simple after switching the stack to DRAM. This may be set
109	  to give board_init_r() a larger heap then the initial heap in
110	  SRAM which is limited to SYS_MALLOC_F_LEN bytes.
111
112config SPL_SEPARATE_BSS
113	bool "BSS section is in a different memory region from text"
114	help
115	  Some platforms need a large BSS region in SPL and can provide this
116	  because RAM is already set up. In this case BSS can be moved to RAM.
117	  This option should then be enabled so that the correct device tree
118	  location is used. Normally we put the device tree at the end of BSS
119	  but with this option enabled, it goes at _image_binary_end.
120
121config SPL_DISPLAY_PRINT
122	bool "Display a board-specific message in SPL"
123	help
124	  If this option is enabled, U-Boot will call the function
125	  spl_display_print() immediately after displaying the SPL console
126	  banner ("U-Boot SPL ..."). This function should be provided by
127	  the board.
128
129config SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR
130	bool "MMC raw mode: by sector"
131	default y if ARCH_SUNXI || ARCH_DAVINCI || ARCH_UNIPHIER ||ARCH_MX6 || \
132		     ARCH_ROCKCHIP || ARCH_MVEBU ||  ARCH_SOCFPGA || \
133		     ARCH_AT91 || ARCH_ZYNQ || ARCH_KEYSTONE || OMAP34XX || \
134		     OMAP44XX || OMAP54XX || AM33XX || AM43XX
135	help
136	  Use sector number for specifying U-Boot location on MMC/SD in
137	  raw mode.
138
139config SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR
140	hex "Address on the MMC to load U-Boot from"
141	depends on SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR
142	default 0x50 if ARCH_SUNXI
143	default 0x75 if ARCH_DAVINCI
144	default 0x8a if ARCH_MX6
145	default 0x100 if ARCH_UNIPHIER
146	default 0x140 if ARCH_MVEBU
147	default 0x200 if ARCH_SOCFPGA || ARCH_AT91
148	default 0x300 if ARCH_ZYNQ || ARCH_KEYSTONE || OMAP34XX || OMAP44XX || \
149		         OMAP54XX || AM33XX || AM43XX
150	default 0x4000 if ARCH_ROCKCHIP
151	help
152	  Address on the MMC to load U-Boot from, when the MMC is being used
153	  in raw mode. Units: MMC sectors (1 sector = 512 bytes).
154
155config SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION
156	bool "MMC Raw mode: by partition"
157	help
158	  Use a partition for loading U-Boot when using MMC/SD in raw mode.
159
160config SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION
161	hex "Partition to use to load U-Boot from"
162	depends on SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION
163	default 1
164	help
165	  Partition on the MMC to load U-Boot from when the MMC is being
166	  used in raw mode
167
168config SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION_TYPE
169	bool "MMC raw mode: by partition type"
170	depends on DOS_PARTITION && SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION
171	help
172	  Use partition type for specifying U-Boot partition on MMC/SD in
173	  raw mode. U-Boot will be loaded from the first partition of this
174	  type to be found.
175
176config SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION_TYPE
177	hex "Partition Type on the MMC to load U-Boot from"
178	depends on SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION_TYPE
179	help
180	  Partition Type on the MMC to load U-Boot from, when the MMC is being
181	  used in raw mode.
182
183config SPL_CRC32_SUPPORT
184	bool "Support CRC32"
185	depends on SPL_FIT
186	help
187	  Enable this to support CRC32 in FIT images within SPL. This is a
188	  32-bit checksum value that can be used to verify images. This is
189	  the least secure type of checksum, suitable for detected
190	  accidental image corruption. For secure applications you should
191	  consider SHA1 or SHA256.
192
193config SPL_MD5_SUPPORT
194	bool "Support MD5"
195	depends on SPL_FIT
196	help
197	  Enable this to support MD5 in FIT images within SPL. An MD5
198	  checksum is a 128-bit hash value used to check that the image
199	  contents have not been corrupted. Note that MD5 is not considered
200	  secure as it is possible (with a brute-force attack) to adjust the
201	  image while still retaining the same MD5 hash value. For secure
202	  applications where images may be changed maliciously, you should
203	  consider SHA1 or SHA256.
204
205config SPL_SHA1_SUPPORT
206	bool "Support SHA1"
207	depends on SPL_FIT
208	select SHA1
209	help
210	  Enable this to support SHA1 in FIT images within SPL. A SHA1
211	  checksum is a 160-bit (20-byte) hash value used to check that the
212	  image contents have not been corrupted or maliciously altered.
213	  While SHA1 is fairly secure it is coming to the end of its life
214	  due to the expanding computing power avaiable to brute-force
215	  attacks. For more security, consider SHA256.
216
217config SPL_SHA256_SUPPORT
218	bool "Support SHA256"
219	depends on SPL_FIT
220	select SHA256
221	help
222	  Enable this to support SHA256 in FIT images within SPL. A SHA256
223	  checksum is a 256-bit (32-byte) hash value used to check that the
224	  image contents have not been corrupted. SHA256 is recommended for
225	  use in secure applications since (as at 2016) there is no known
226	  feasible attack that could produce a 'collision' with differing
227	  input data. Use this for the highest security. Note that only the
228	  SHA256 variant is supported: SHA512 and others are not currently
229	  supported in U-Boot.
230
231config SPL_FIT_IMAGE_TINY
232	bool "Remove functionality from SPL FIT loading to reduce size"
233	depends on SPL_FIT
234	default y if MACH_SUN50I || MACH_SUN50I_H5
235	help
236	  Enable this to reduce the size of the FIT image loading code
237	  in SPL, if space for the SPL binary is very tight.
238
239	  This removes the detection of image types (which forces the
240	  first image to be treated as having a U-Boot style calling
241	  convention) and skips the recording of each loaded payload
242	  (i.e. loadable) into the FDT (modifying the loaded FDT to
243	  ensure this information is available to the next image
244	  invoked).
245
246config SPL_CPU_SUPPORT
247	bool "Support CPU drivers"
248	help
249	  Enable this to support CPU drivers in SPL. These drivers can set
250	  up CPUs and provide information about them such as the model and
251	  name. This can be useful in SPL since setting up the CPUs earlier
252	  may improve boot performance. Enable this option to build the
253	  drivers in drivers/cpu as part of an SPL build.
254
255config SPL_CRYPTO_SUPPORT
256	bool "Support crypto drivers"
257	help
258	  Enable crypto drivers in SPL. These drivers can be used to
259	  accelerate secure boot processing in secure applications. Enable
260	  this option to build the drivers in drivers/crypto as part of an
261	  SPL build.
262
263config SPL_HASH_SUPPORT
264	bool "Support hashing drivers"
265	select SHA1
266	select SHA256
267	help
268	  Enable hashing drivers in SPL. These drivers can be used to
269	  accelerate secure boot processing in secure applications. Enable
270	  this option to build system-specific drivers for hash acceleration
271	  as part of an SPL build.
272
273config SPL_DMA_SUPPORT
274	bool "Support DMA drivers"
275	help
276	  Enable DMA (direct-memory-access) drivers in SPL. These drivers
277	  can be used to handle memory-to-peripheral data transfer without
278	  the CPU moving the data. Enable this option to build the drivers
279	  in drivers/dma as part of an SPL build.
280
281config SPL_DRIVERS_MISC_SUPPORT
282	bool "Support misc drivers"
283	help
284	  Enable miscellaneous drivers in SPL. These drivers perform various
285	  tasks that don't fall nicely into other categories, Enable this
286	  option to build the drivers in drivers/misc as part of an SPL
287	  build, for those that support building in SPL (not all drivers do).
288
289config SPL_ENV_SUPPORT
290	bool "Support an environment"
291	help
292	  Enable environment support in SPL. The U-Boot environment provides
293	  a number of settings (essentially name/value pairs) which can
294	  control many aspects of U-Boot's operation. Normally this is not
295	  needed in SPL as it has a much simpler task with less
296	  configuration. But some boards use this to support 'Falcon' boot
297	  on EXT2 and FAT, where SPL boots directly into Linux without
298	  starting U-Boot first. Enabling this option will make env_get()
299	  and env_set() available in SPL.
300
301config SPL_SAVEENV
302	bool "Support save environment"
303	depends on SPL_ENV_SUPPORT
304	help
305	  Enable save environment support in SPL after setenv. By default
306	  the saveenv option is not provided in SPL, but some boards need
307	  this support in 'Falcon' boot, where SPL need to boot from
308	  different images based on environment variable set by OS. For
309	  example OS may set "reboot_image" environment variable to
310	  "recovery" inorder to boot recovery image by SPL. The SPL read
311	  "reboot_image" and act accordingly and change the reboot_image
312	  to default mode using setenv and save the environemnt.
313
314config SPL_ETH_SUPPORT
315	bool "Support Ethernet"
316	depends on SPL_ENV_SUPPORT
317	help
318	  Enable access to the network subsystem and associated Ethernet
319	  drivers in SPL. This permits SPL to load U-Boot over an Ethernet
320	  link rather than from an on-board peripheral. Environment support
321	  is required since the network stack uses a number of environment
322	  variables. See also SPL_NET_SUPPORT.
323
324config SPL_EXT_SUPPORT
325	bool "Support EXT filesystems"
326	help
327	  Enable support for EXT2/3/4 filesystems with SPL. This permits
328	  U-Boot (or Linux in Falcon mode) to be loaded from an EXT
329	  filesystem from within SPL. Support for the underlying block
330	  device (e.g. MMC or USB) must be enabled separately.
331
332config SPL_FAT_SUPPORT
333	bool "Support FAT filesystems"
334	select FS_FAT
335	help
336	  Enable support for FAT and VFAT filesystems with SPL. This
337	  permits U-Boot (or Linux in Falcon mode) to be loaded from a FAT
338	  filesystem from within SPL. Support for the underlying block
339	  device (e.g. MMC or USB) must be enabled separately.
340
341config SPL_FPGA_SUPPORT
342	bool "Support FPGAs"
343	help
344	  Enable support for FPGAs in SPL. Field-programmable Gate Arrays
345	  provide software-configurable hardware which is typically used to
346	  implement peripherals (such as UARTs, LCD displays, MMC) or
347	  accelerate custom processing functions, such as image processing
348	  or machine learning. Sometimes it is useful to program the FPGA
349	  as early as possible during boot, and this option can enable that
350	  within SPL.
351
352config SPL_GPIO_SUPPORT
353	bool "Support GPIO"
354	help
355	  Enable support for GPIOs (General-purpose Input/Output) in SPL.
356	  GPIOs allow U-Boot to read the state of an input line (high or
357	  low) and set the state of an output line. This can be used to
358	  drive LEDs, control power to various system parts and read user
359	  input. GPIOs can be useful in SPL to enable a 'sign-of-life' LED,
360	  for example. Enable this option to build the drivers in
361	  drivers/gpio as part of an SPL build.
362
363config SPL_I2C_SUPPORT
364	bool "Support I2C"
365	help
366	  Enable support for the I2C (Inter-Integrated Circuit) bus in SPL.
367	  I2C works with a clock and data line which can be driven by a
368	  one or more masters or slaves. It is a fairly complex bus but is
369	  widely used as it only needs two lines for communication. Speeds of
370	  400kbps are typical but up to 3.4Mbps is supported by some
371	  hardware. I2C can be useful in SPL to configure power management
372	  ICs (PMICs) before raising the CPU clock speed, for example.
373	  Enable this option to build the drivers in drivers/i2c as part of
374	  an SPL build.
375
376config SPL_LIBCOMMON_SUPPORT
377	bool "Support common libraries"
378	help
379	  Enable support for common U-Boot libraries within SPL. These
380	  libraries include common code to deal with U-Boot images,
381	  environment and USB, for example. This option is enabled on many
382	  boards. Enable this option to build the code in common/ as part of
383	  an SPL build.
384
385config SPL_LIBDISK_SUPPORT
386	bool "Support disk paritions"
387	help
388	  Enable support for disk partitions within SPL. 'Disk' is something
389	  of a misnomer as it includes non-spinning media such as flash (as
390	  used in MMC and USB sticks). Partitions provide a way for a disk
391	  to be split up into separate regions, with a partition table placed
392	  at the start or end which describes the location and size of each
393	  'partition'. These partitions are typically uses as individual block
394	  devices, typically with an EXT2 or FAT filesystem in each. This
395	  option enables whatever partition support has been enabled in
396	  U-Boot to also be used in SPL. It brings in the code in disk/.
397
398config SPL_LIBGENERIC_SUPPORT
399	bool "Support generic libraries"
400	help
401	  Enable support for generic U-Boot libraries within SPL. These
402	  libraries include generic code to deal with device tree, hashing,
403	  printf(), compression and the like. This option is enabled on many
404	  boards. Enable this option to build the code in lib/ as part of an
405	  SPL build.
406
407config SPL_MMC_SUPPORT
408	bool "Support MMC"
409	depends on MMC
410	help
411	  Enable support for MMC (Multimedia Card) within SPL. This enables
412	  the MMC protocol implementation and allows any enabled drivers to
413	  be used within SPL. MMC can be used with or without disk partition
414	  support depending on the application (SPL_LIBDISK_SUPPORT). Enable
415	  this option to build the drivers in drivers/mmc as part of an SPL
416	  build.
417
418config SPL_MPC8XXX_INIT_DDR_SUPPORT
419	bool "Support MPC8XXX DDR init"
420	help
421	  Enable support for DDR-SDRAM (double-data-rate synchronous dynamic
422	  random-access memory) on the MPC8XXX family within SPL. This
423	  allows DRAM to be set up before loading U-Boot into that DRAM,
424	  where it can run.
425
426config SPL_MTD_SUPPORT
427	bool "Support MTD drivers"
428	help
429	  Enable support for MTD (Memory Technology Device) within SPL. MTD
430	  provides a block interface over raw NAND and can also be used with
431	  SPI flash. This allows SPL to load U-Boot from supported MTD
432	  devices. See SPL_NAND_SUPPORT and SPL_ONENAND_SUPPORT for how
433	  to enable specific MTD drivers.
434
435config SPL_MUSB_NEW_SUPPORT
436	bool "Support new Mentor Graphics USB"
437	help
438	  Enable support for Mentor Graphics USB in SPL. This is a new
439	  driver used by some boards. Enable this option to build
440	  the drivers in drivers/usb/musb-new as part of an SPL build. The
441	  old drivers are in drivers/usb/musb.
442
443config SPL_NAND_SUPPORT
444	bool "Support NAND flash"
445	help
446	  Enable support for NAND (Negative AND) flash in SPL. NAND flash
447	  can be used to allow SPL to load U-Boot from supported devices.
448	  This enables the drivers in drivers/mtd/nand as part of an SPL
449	  build.
450
451config SPL_NET_SUPPORT
452	bool "Support networking"
453	help
454	  Enable support for network devices (such as Ethernet) in SPL.
455	  This permits SPL to load U-Boot over a network link rather than
456	  from an on-board peripheral. Environment support is required since
457	  the network stack uses a number of environment variables. See also
458	  SPL_ETH_SUPPORT.
459
460if SPL_NET_SUPPORT
461config SPL_NET_VCI_STRING
462	string "BOOTP Vendor Class Identifier string sent by SPL"
463	help
464	  As defined by RFC 2132 the vendor class identifier field can be
465	  sent by the client to identify the vendor type and configuration
466	  of a client.  This is often used in practice to allow for the DHCP
467	  server to specify different files to load depending on if the ROM,
468	  SPL or U-Boot itself makes the request
469endif   # if SPL_NET_SUPPORT
470
471config SPL_NO_CPU_SUPPORT
472	bool "Drop CPU code in SPL"
473	help
474	  This is specific to the ARM926EJ-S CPU. It disables the standard
475	  start.S start-up code, presumably so that a replacement can be
476	  used on that CPU. You should not enable it unless you know what
477	  you are doing.
478
479config SPL_NOR_SUPPORT
480	bool "Support NOR flash"
481	help
482	  Enable support for loading U-Boot from memory-mapped NOR (Negative
483	  OR) flash in SPL. NOR flash is slow to write but fast to read, and
484	  a memory-mapped device makes it very easy to access. Loading from
485	  NOR is typically achieved with just a memcpy().
486
487config SPL_XIP_SUPPORT
488	bool "Support XIP"
489	depends on SPL
490	help
491	  Enable support for execute in place of U-Boot or kernel image. There
492	  is no need to copy image from flash to ram if flash supports execute
493	  in place. Its very useful in systems having enough flash but not
494	  enough ram to load the image.
495
496config SPL_ONENAND_SUPPORT
497	bool "Support OneNAND flash"
498	help
499	  Enable support for OneNAND (Negative AND) flash in SPL. OneNAND is
500	  a type of NAND flash and therefore can be used to allow SPL to
501	  load U-Boot from supported devices. This enables the drivers in
502	  drivers/mtd/onenand as part of an SPL build.
503
504config SPL_OS_BOOT
505	bool "Activate Falcon Mode"
506	depends on !TI_SECURE_DEVICE
507	default n
508	help
509	  Enable booting directly to an OS from SPL.
510	  for more info read doc/README.falcon
511
512if SPL_OS_BOOT
513config SYS_OS_BASE
514	hex "addr, where OS is found"
515	depends on SPL_NOR_SUPPORT
516	help
517	  Specify the address, where the OS image is found, which
518	  gets booted.
519
520endif # SPL_OS_BOOT
521
522config SPL_PCI_SUPPORT
523	bool "Support PCI drivers"
524	help
525	  Enable support for PCI in SPL. For platforms that need PCI to boot,
526	  or must perform some init using PCI in SPL, this provides the
527	  necessary driver support. This enables the drivers in drivers/pci
528	  as part of an SPL build.
529
530config SPL_PCH_SUPPORT
531	bool "Support PCH drivers"
532	help
533	  Enable support for PCH (Platform Controller Hub) devices in SPL.
534	  These are used to set up GPIOs and the SPI peripheral early in
535	  boot. This enables the drivers in drivers/pch as part of an SPL
536	  build.
537
538config SPL_POST_MEM_SUPPORT
539	bool "Support POST drivers"
540	help
541	  Enable support for POST (Power-on Self Test) in SPL. POST is a
542	  procedure that checks that the hardware (CPU or board) appears to
543	  be functionally correctly. It is a sanity check that can be
544	  performed before booting. This enables the drivers in post/drivers
545	  as part of an SPL build.
546
547config SPL_POWER_SUPPORT
548	bool "Support power drivers"
549	help
550	  Enable support for power control in SPL. This includes support
551	  for PMICs (Power-management Integrated Circuits) and some of the
552	  features provided by PMICs. In particular, voltage regulators can
553	  be used to enable/disable power and vary its voltage. That can be
554	  useful in SPL to turn on boot peripherals and adjust CPU voltage
555	  so that the clock speed can be increased. This enables the drivers
556	  in drivers/power, drivers/power/pmic and drivers/power/regulator
557	  as part of an SPL build.
558
559config SPL_RAM_SUPPORT
560	bool "Support booting from RAM"
561	default y if MICROBLAZE || ARCH_SOCFPGA || TEGRA || ARCH_ZYNQ
562	help
563	  Enable booting of an image in RAM. The image can be preloaded or
564	  it can be loaded by SPL directly into RAM (e.g. using USB).
565
566config SPL_RAM_DEVICE
567	bool "Support booting from preloaded image in RAM"
568	depends on SPL_RAM_SUPPORT
569	default y if MICROBLAZE || ARCH_SOCFPGA || TEGRA || ARCH_ZYNQ
570	help
571	  Enable booting of an image already loaded in RAM. The image has to
572	  be already in memory when SPL takes over, e.g. loaded by the boot
573	  ROM.
574
575config SPL_RTC_SUPPORT
576	bool "Support RTC drivers"
577	help
578	  Enable RTC (Real-time Clock) support in SPL. This includes support
579	  for reading and setting the time. Some RTC devices also have some
580	  non-volatile (battery-backed) memory which is accessible if
581	  needed. This enables the drivers in drivers/rtc as part of an SPL
582	  build.
583
584config SPL_SATA_SUPPORT
585	bool "Support loading from SATA"
586	help
587	  Enable support for SATA (Serial AT attachment) in SPL. This allows
588	  use of SATA devices such as hard drives and flash drivers for
589	  loading U-Boot. SATA is used in higher-end embedded systems and
590	  can provide higher performance than MMC , at somewhat higher
591	  expense and power consumption. This enables loading from SATA
592	  using a configured device.
593
594config SPL_SERIAL_SUPPORT
595	bool "Support serial"
596	help
597	  Enable support for serial in SPL. This allows use of a serial UART
598	  for displaying messages while SPL is running. It also brings in
599	  printf() and panic() functions. This should normally be enabled
600	  unless there are space reasons not to. Even then, consider
601	  enabling USE_TINY_PRINTF which is a small printf() version.
602
603config SPL_SPI_FLASH_SUPPORT
604	bool "Support SPI flash drivers"
605	help
606	  Enable support for using SPI flash in SPL, and loading U-Boot from
607	  SPI flash. SPI flash (Serial Peripheral Bus flash) is named after
608	  the SPI bus that is used to connect it to a system. It is a simple
609	  but fast bidirectional 4-wire bus (clock, chip select and two data
610	  lines). This enables the drivers in drivers/mtd/spi as part of an
611	  SPL build. This normally requires SPL_SPI_SUPPORT.
612
613config SPL_SPI_SUPPORT
614	bool "Support SPI drivers"
615	help
616	  Enable support for using SPI in SPL. This is used for connecting
617	  to SPI flash for loading U-Boot. See SPL_SPI_FLASH_SUPPORT for
618	  more details on that. The SPI driver provides the transport for
619	  data between the SPI flash and the CPU. This option can be used to
620	  enable SPI drivers that are needed for other purposes also, such
621	  as a SPI PMIC.
622
623config SPL_THERMAL
624	bool "Driver support for thermal devices"
625	help
626	  Enable support for temperature-sensing devices. Some SoCs have on-chip
627	  temperature sensors to permit warnings, speed throttling or even
628	  automatic power-off when the temperature gets too high or low. Other
629	  devices may be discrete but connected on a suitable bus.
630
631config SPL_USB_HOST_SUPPORT
632	bool "Support USB host drivers"
633	help
634	  Enable access to USB (Universal Serial Bus) host devices so that
635	  SPL can load U-Boot from a connected USB peripheral, such as a USB
636	  flash stick. While USB takes a little longer to start up than most
637	  buses, it is very flexible since many different types of storage
638	  device can be attached. This option enables the drivers in
639	  drivers/usb/host as part of an SPL build.
640
641config SPL_USB_SUPPORT
642	bool "Support loading from USB"
643	depends on SPL_USB_HOST_SUPPORT
644	help
645	  Enable support for USB devices in SPL. This allows use of USB
646	  devices such as hard drives and flash drivers for loading U-Boot.
647	  The actual drivers are enabled separately using the normal U-Boot
648	  config options. This enables loading from USB using a configured
649	  device.
650
651config SPL_USB_GADGET_SUPPORT
652	bool "Suppport USB Gadget drivers"
653	help
654	  Enable USB Gadget API which allows to enable USB device functions
655	  in SPL.
656
657if SPL_USB_GADGET_SUPPORT
658
659config SPL_USBETH_SUPPORT
660	bool "Support USB Ethernet drivers"
661	help
662	  Enable access to the USB network subsystem and associated
663	  drivers in SPL. This permits SPL to load U-Boot over a
664	  USB-connected Ethernet link (such as a USB Ethernet dongle) rather
665	  than from an onboard peripheral. Environment support is required
666	  since the network stack uses a number of environment variables.
667	  See also SPL_NET_SUPPORT and SPL_ETH_SUPPORT.
668
669config SPL_DFU_SUPPORT
670	bool "Support DFU (Device Firmware Upgarde)"
671	select SPL_HASH_SUPPORT
672	select SPL_DFU_NO_RESET
673	depends on SPL_RAM_SUPPORT
674	help
675	  This feature enables the DFU (Device Firmware Upgarde) in SPL with
676	  RAM memory device support. The ROM code will load and execute
677	  the SPL built with dfu. The user can load binaries (u-boot/kernel) to
678	  selected device partition from host-pc using dfu-utils.
679	  This feature is useful to flash the binaries to factory or bare-metal
680	  boards using USB interface.
681
682choice
683	bool "DFU device selection"
684	depends on SPL_DFU_SUPPORT
685
686config SPL_DFU_RAM
687	bool "RAM device"
688	depends on SPL_DFU_SUPPORT && SPL_RAM_SUPPORT
689	help
690	 select RAM/DDR memory device for loading binary images
691	 (u-boot/kernel) to the selected device partition using
692	 DFU and execute the u-boot/kernel from RAM.
693
694endchoice
695
696config SPL_USB_SDP_SUPPORT
697	bool "Support SDP (Serial Download Protocol)"
698	help
699	  Enable Serial Download Protocol (SDP) device support in SPL. This
700	  allows to download images into memory and execute (jump to) them
701	  using the same protocol as implemented by the i.MX family's boot ROM.
702endif
703
704config SPL_WATCHDOG_SUPPORT
705	bool "Support watchdog drivers"
706	help
707	  Enable support for watchdog drivers in SPL. A watchdog is
708	  typically a hardware peripheral which can reset the system when it
709	  detects no activity for a while (such as a software crash). This
710	  enables the drivers in drivers/watchdog as part of an SPL build.
711
712config SPL_YMODEM_SUPPORT
713	bool "Support loading using Ymodem"
714	help
715	  While loading from serial is slow it can be a useful backup when
716	  there is no other option. The Ymodem protocol provides a reliable
717	  means of transmitting U-Boot over a serial line for using in SPL,
718	  with a checksum to ensure correctness.
719
720config SPL_ATF
721	bool "Support ARM Trusted Firmware"
722	depends on ARM64
723	help
724	  ATF(ARM Trusted Firmware) is a component for ARM arch64 which
725	  is loaded by SPL(which is considered as BL2 in ATF terminology).
726	  More detail at: https://github.com/ARM-software/arm-trusted-firmware
727
728config TPL
729	bool
730	depends on SUPPORT_TPL
731	prompt "Enable TPL"
732	help
733	  If you want to build TPL as well as the normal image and SPL, say Y.
734
735if TPL
736
737config TPL_LDSCRIPT
738        string "Linker script for the TPL stage"
739	depends on TPL
740	help
741	  The TPL stage will usually require a different linker-script
742	  (as it runs from a different memory region) than the regular
743	  U-Boot stage.  Set this to the path of the linker-script to
744	  be used for TPL.
745
746	  May be left empty to trigger the Makefile infrastructure to
747	  fall back to the linker-script used for the SPL stage.
748
749config TPL_NEEDS_SEPARATE_TEXT_BASE
750        bool "TPL needs a separate text-base"
751	default n
752	depends on TPL
753	help
754	  Enable, if the TPL stage should not inherit its text-base
755	  from the SPL stage.  When enabled, a base address for the
756	  .text sections of the TPL stage has to be set below.
757
758config TPL_NEEDS_SEPARATE_STACK
759        bool "TPL needs a separate initial stack-pointer"
760	default n
761	depends on TPL
762	help
763	  Enable, if the TPL stage should not inherit its initial
764	  stack-pointer from the settings for the SPL stage.
765
766config TPL_TEXT_BASE
767        hex "Base address for the .text section of the TPL stage"
768	depends on TPL_NEEDS_SEPARATE_TEXT_BASE
769	help
770	  The base address for the .text section of the TPL stage.
771
772config TPL_MAX_SIZE
773        int "Maximum size (in bytes) for the TPL stage"
774	default 0
775	depends on TPL
776	help
777	  The maximum size (in bytes) of the TPL stage.
778
779config TPL_STACK
780        hex "Address of the initial stack-pointer for the TPL stage"
781	depends on TPL_NEEDS_SEPARATE_STACK
782	help
783	  The address of the initial stack-pointer for the TPL stage.
784	  Usually this will be the (aligned) top-of-stack.
785
786config TPL_BOOTROM_SUPPORT
787        bool "Support returning to the BOOTROM (from TPL)"
788	help
789	  Some platforms (e.g. the Rockchip RK3368) provide support in their
790	  ROM for loading the next boot-stage after performing basic setup
791	  from the TPL stage.
792
793	  Enable this option, to return to the BOOTROM through the
794	  BOOT_DEVICE_BOOTROM (or fall-through to the next boot device in the
795	  boot device list, if not implemented for a given board)
796
797config TPL_DRIVERS_MISC_SUPPORT
798	bool "Support misc drivers in TPL"
799	help
800	  Enable miscellaneous drivers in TPL. These drivers perform various
801	  tasks that don't fall nicely into other categories, Enable this
802	  option to build the drivers in drivers/misc as part of an TPL
803	  build, for those that support building in TPL (not all drivers do).
804
805config TPL_ENV_SUPPORT
806	bool "Support an environment"
807	help
808	  Enable environment support in TPL. See SPL_ENV_SUPPORT for details.
809
810config TPL_I2C_SUPPORT
811	bool "Support I2C"
812	help
813	  Enable support for the I2C bus in TPL. See SPL_I2C_SUPPORT for
814	  details.
815
816config TPL_LIBCOMMON_SUPPORT
817	bool "Support common libraries"
818	help
819	  Enable support for common U-Boot libraries within TPL. See
820	  SPL_LIBCOMMON_SUPPORT for details.
821
822config TPL_LIBGENERIC_SUPPORT
823	bool "Support generic libraries"
824	help
825	  Enable support for generic U-Boot libraries within TPL. See
826	  SPL_LIBGENERIC_SUPPORT for details.
827
828config TPL_MPC8XXX_INIT_DDR_SUPPORT
829	bool "Support MPC8XXX DDR init"
830	help
831	  Enable support for DDR-SDRAM on the MPC8XXX family within TPL. See
832	  SPL_MPC8XXX_INIT_DDR_SUPPORT for details.
833
834config TPL_MMC_SUPPORT
835	bool "Support MMC"
836	depends on MMC
837	help
838	  Enable support for MMC within TPL. See SPL_MMC_SUPPORT for details.
839
840config TPL_NAND_SUPPORT
841	bool "Support NAND flash"
842	help
843	  Enable support for NAND in TPL. See SPL_NAND_SUPPORT for details.
844
845config TPL_SERIAL_SUPPORT
846	bool "Support serial"
847	help
848	  Enable support for serial in TPL. See SPL_SERIAL_SUPPORT for
849	  details.
850
851config TPL_SPI_FLASH_SUPPORT
852	bool "Support SPI flash drivers"
853	help
854	  Enable support for using SPI flash in TPL. See SPL_SPI_FLASH_SUPPORT
855	  for details.
856
857config TPL_SPI_SUPPORT
858	bool "Support SPI drivers"
859	help
860	  Enable support for using SPI in TPL. See SPL_SPI_SUPPORT for
861	  details.
862
863endif # TPL
864
865endif # SPL
866endmenu
867