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2022-10-30video: Drop common LCD implementationSimon Glass
This code is no-longer used. Drop it. Signed-off-by: Simon Glass <[email protected]>
2022-10-30video: lcd: Drop console rotationSimon Glass
This option is not used in U-Boot anymore. Drop it option and the associated implementation. Signed-off-by: Simon Glass <[email protected]>
2022-09-13cyclic: Add basic support for cyclic function execution infrastrutureStefan Roese
Add the basic infrastructure to periodically execute code, e.g. all 100ms. Examples for such functions might be LED blinking etc. The functions that are hooked into this cyclic list should be small timewise as otherwise the execution of the other code that relies on a high frequent polling (e.g. UART rx char ready check) might be delayed too much. This patch also adds the Kconfig option CONFIG_CYCLIC_MAX_CPU_TIME_US, which configures the max allowed time for such a cyclic function. If it's execution time exceeds this time, this cyclic function will get removed from the cyclic list. How is this cyclic functionality executed? The following patch integrates the main function responsible for calling all registered cyclic functions cyclic_run() into the common WATCHDOG_RESET macro. This guarantees that cyclic_run() is executed very often, which is necessary for the cyclic functions to get scheduled and executed at their configured periods. This cyclic infrastructure will be used by a board specific function on the NIC23 MIPS Octeon board, which needs to check periodically, if a PCIe FLR has occurred. Signed-off-by: Stefan Roese <[email protected]> Reviewed-by: Simon Glass <[email protected]>
2022-06-28common: usb: Update logic for usb.o, usb_hub.o and usb_storage.oTom Rini
Now that we have consistently named symbols to enable USB host or gadget controller support in SPL or full U-Boot, we do not need to unconditionally build USB files nor depend on non-SPL symbols to know when to build these common files. Signed-off-by: Tom Rini <[email protected]>
2022-05-02avb: Don't build in SPLSimon Glass
This feature is not used in SPL at present. Update the Makefile to avoid it being built. Signed-off-by: Simon Glass <[email protected]>
2022-03-10event: Add basic support for eventsSimon Glass
Add a way to create and dispatch events without needing to allocate memory. Also add a way to 'spy' on events, thus allowing 'hooks' to be created. Use a linker list for static events, which we can use to replace functions like arch_cpu_init_f(). Allow an EVENT_DEBUG option which makes it easier to see what is going on at runtime, but uses more code space. Dynamic events allow the creation of a spy at runtime. This is not always necessary, but can be enabled with EVENT_DYNAMIC if needed. A 'test' event is the only option for now. Signed-off-by: Simon Glass <[email protected]>
2022-01-18common: remove bedbug debugger supportOvidiu Panait
Commit 98f705c9cefd ("powerpc: remove 4xx support") removed (in 2017) the last code that made use of bedbug debugger support. Since there aren't any boards left that define either CONFIG_CMD_BEDBUG or a real bedbug_init(), drop this feature from u-boot. Signed-off-by: Ovidiu Panait <[email protected]> Reviewed-by: Thomas Huth <[email protected]> Reviewed-by: Simon Glass <[email protected]>
2021-11-30common: rename lcd_simplefb.c file to fdt_simplefb.cPatrick Delaunay
Rename the file lcd_simplefb.c to fdt_simplefb.c to be aligned with the configuration name and with the associated include file ./include/fdt_simplefb.h Signed-off-by: Patrick Delaunay <[email protected]> Reviewed-by: Patrice Chotard <[email protected]>
2021-11-30Convert CONFIG_LCD_DT_SIMPLEFB to KconfigPatrick Delaunay
This converts the following to Kconfig: CONFIG_LCD_DT_SIMPLEFB This patch also renames this config to CONFIG_FDT_SIMPLEFB as the code in common/lcd_simplefb.c support CONFIG_LCD and CONFIG_VIDEO. Signed-off-by: Patrick Delaunay <[email protected]> Reviewed-by: Matthias Brugger <[email protected]>
2021-11-11Remove LYNX KDI remaindersThomas Huth
The last board that used to set CONFIG_LYNXKDI has been removed in commit 242836a893ae ("powerpc: ppc4xx: remove pcs440ep support"), doc/README.lynxkdi only talks about a MPC8260 board being supported, and the mpc8260 support has been removed four years ago in commit 2eb48ff7a210d ("powerpc, 8260: remove support for mpc8260") already, and common/lynxkdi.c only consists of an "#error" statement these days, so it seems like the LYNX KDI code is dead code nowadays. Let's remove it now. Signed-off-by: Thomas Huth <[email protected]>
2021-11-11Create a new boot/ directorySimon Glass
Quite a lot of the code in common/relates to booting and images. Before adding more it seems like a good time to move the code into its own directory. Most files with 'boot' or 'image' in them are moved, except: - autoboot.c which relates to U-Boot automatically running a script - bootstage.c which relates to U-Boot timing Drop the removal of boot* files from the output directory, since this interfers with the symlinks created by tools and there does not appear to be any such file from my brief testing. Signed-off-by: Simon Glass <[email protected]> Reviewed-by: Artem Lapkin <[email protected]> Tested-by: Artem Lapkin <[email protected]>
2021-10-08image: Split board code out into its own fileSimon Glass
To avoid a large #ifdef in the image.c file, move the affected code into a separate file. Avoid any style fix-ups for easier review. Those are in the next patch. Signed-off-by: Simon Glass <[email protected]>
2021-09-16Merge tag 'v2021.10-rc4' into nextTom Rini
Prepare v2021.10-rc4 Signed-off-by: Tom Rini <[email protected]> # gpg: Signature made Tue 14 Sep 2021 06:58:32 PM EDT # gpg: using RSA key 1A3C7F70E08FAB1707809BBF147C39FF9634B72C # gpg: Good signature from "Thomas Rini <[email protected]>" [ultimate] # Conflicts: # board/Arcturus/ucp1020/spl.c # cmd/mvebu/Kconfig # common/Kconfig.boot # common/image-fit.c # configs/UCP1020_defconfig # configs/sifive_unmatched_defconfig # drivers/pci/Kconfig # include/configs/UCP1020.h # include/configs/sifive-unmatched.h # lib/Makefile # scripts/config_whitelist.txt
2021-09-08common/spl: Drop [ST]PL_HASH_SUPPORT in favor of [ST]PL_HASHAlexandru Gagniuc
All of these configs exist. Stick to using CONFIG_[ST]PL_HASH, and drop all references to CONFIG_[ST]PL_HASH_SUPPORT. This means we need for CHAIN_OF_TRUST to select SPL_HASH now. Signed-off-by: Alexandru Gagniuc <[email protected]> [trini: Add TPL case, fix CHAIN_OF_TRUST, other tweaks] Signed-off-by: Tom Rini <[email protected]>
2021-09-04net: Rename SPL_NET_SUPPORT to SPL_NETSimon Glass
Rename this option so that CONFIG_IS_ENABLED can be used with it. Signed-off-by: Simon Glass <[email protected]>
2021-09-04serial: Rename SERIAL_SUPPORT to SERIALSimon Glass
Rename these options so that CONFIG_IS_ENABLED can be used with them. Signed-off-by: Simon Glass <[email protected]>
2021-07-28Rename SPL_USB_HOST_SUPPORT to SPL_USB_HOSTSimon Glass
Rename this option so that CONFIG_IS_ENABLED can be used with it. Signed-off-by: Simon Glass <[email protected]>
2021-04-20Add support for stack-protectorJoel Peshkin
Add support for stack protector for UBOOT, SPL, and TPL as well as new pytest for stackprotector Signed-off-by: Joel Peshkin <[email protected]> Adjust UEFI build flags. Signed-off-by: Heinrich Schuchardt <[email protected]>
2021-04-12x86: qemu: move QFW to its own uclassAsherah Connor
We move qfw into its own uclass and split the PIO functions into a specific driver for that uclass. The PIO driver is selected in the qemu-x86 board config (this covers x86 and x86_64). include/qfw.h is cleaned up and documentation added. Signed-off-by: Asherah Connor <[email protected]> Reviewed-by: Simon Glass <[email protected]> Reviewed-by: Bin Meng <[email protected]> Tested-by: Bin Meng <[email protected]>
2021-03-13common: SCP03 control (enable and provision of keys)Jorge Ramirez-Ortiz
This Trusted Application allows enabling SCP03 as well as provisioning the keys on TEE controlled secure element (ie, NXP SE050). All the information flowing on buses (ie I2C) between the processor and the secure element must be encrypted. Secure elements are pre-provisioned with a set of keys known to the user so that the secure channel protocol (encryption) can be enforced on the first boot. This situation is however unsafe since the keys are publically available. For example, in the case of the NXP SE050, these keys would be available in the OP-TEE source tree [2] and of course in the documentation corresponding to the part. To address that, users are required to rotate/provision those keys (ie, generate new keys and write them in the secure element's persistent memory). For information on SCP03, check the Global Platform HomePage and google for that term [1] [1] globalplatform.org [2] https://github.com/OP-TEE/optee_os/ check: core/drivers/crypto/se050/adaptors/utils/scp_config.c Signed-off-by: Jorge Ramirez-Ortiz <[email protected]> Reviewed-by: Simon Glass <[email protected]>
2021-01-16common: Makefile: drop duplicated linePeng Fan
obj-$(CONFIG_$(SPL_TPL_)YMODEM_SUPPORT) += xyzModem.o is there, no need obj-$(CONFIG_SPL_YMODEM_SUPPORT) += xyzModem.o Signed-off-by: Peng Fan <[email protected]> Reviewed-by: Simon Glass <[email protected]>
2020-10-30common: update: add a generic interface for FIT imageAKASHI Takahiro
The main purpose of this patch is to separate a generic interface for updating firmware using DFU drivers from "auto-update" via tftp. This function will also be used in implementing UEFI capsule update in a later commit. Signed-off-by: AKASHI Takahiro <[email protected]> Reviewed-by: Tom Rini <[email protected]>
2020-04-26fdt_region: move fdt_region.c to common/ from lib/libfdt/Masahiro Yamada
My goal is to sync lib/libfdt/ with scripts/dtc/libfdt/, that is, make lib/libfdt/ contain only wrapper files. fdt_region.c was written only for U-Boot to implement the verified boot. So, this belongs to the same group as common/fdt_support.c, which is a collection of U-Boot own fdt helpers. Move lib/libfdt/fdt_region.c to common/fdt_region.c . This is necessary only when CONFIG_(SPL_TPL_)_FIT_SIGNATURE is enabled. Signed-off-by: Masahiro Yamada <[email protected]>
2020-04-24common: image_sign_info helper functions in SPLHeinrich Schuchardt
Do not build image_sign_info helper functions in SPL if not needed. Fixes: b983cc2da0ba ("lib: rsa: decouple rsa from FIT image verification") Signed-off-by: Heinrich Schuchardt <[email protected]> Reviewed-by: Tom Rini <[email protected]>
2020-04-16log: syslog driverHeinrich Schuchardt
Provide a log driver that broadcasts RFC 3164 messages to syslog servers. rsyslog is one implementation of such a server. The messages are sent to the local broadcast address 255.255.255.255 on port 514. The environment variable log_hostname can be used to provide the HOSTNAME field for the messages. The optional TIMESTAMP field of RFC 3164 is not provided. Signed-off-by: Heinrich Schuchardt <[email protected]> Reviewed-by: Simon Glass <[email protected]>
2020-03-12lib: rsa: decouple rsa from FIT image verificationAKASHI Takahiro
Introduce new configuration, CONFIG_RSA_VERIFY which will decouple building RSA functions from FIT verification and allow for adding a RSA-based signature verification for other file formats, in particular PE file for UEFI secure boot. Signed-off-by: AKASHI Takahiro <[email protected]> Reviewed-by: Simon Glass <[email protected]>
2020-02-04image: android: Add functions for handling dtb fieldSam Protsenko
Android Boot Image v2 adds "DTB" payload (and corresponding field in the image header). Provide functions for its handling: - android_image_get_dtb_by_index(): Obtain DTB blob from "DTB" part of boot image, by blob's index - android_image_print_dtb_contents(): Iterate over all DTB blobs in "DTB" part of boot image and print those blobs info "DTB" payload might be in one of the following formats: 1. concatenated DTB blobs 2. Android DTBO format The latter requires "android-image-dt.c" functionality, so this commit selects that file for building for CONFIG_ANDROID_BOOT_IMAGE option. Right now this new functionality isn't used, but it can be used further. As it's required to apply some specific dtbo blob(s) from "dtbo" partition, we can't automate this process inside of "bootm" command. But we can do next: - come up with some new command like "abootimg" to extract dtb blob from boot image (using functions from this patch) - extract desired dtbo blobs from "dtbo" partition using "adtimg" command - merge dtbo blobs into dtb blob using "fdt apply" command - pass resulting dtb blob into bootm command in order to boot the Android kernel with Android ramdisk from boot image Signed-off-by: Sam Protsenko <[email protected]> Signed-off-by: Lokesh Vutla <[email protected]>
2020-01-17mkimage: fit: add support to encrypt image with aesPhilippe Reynes
This commit add the support of encrypting image with aes in mkimage. To enable the ciphering, a node cipher with a reference to a key and IV (Initialization Vector) must be added to the its file. Then mkimage add the encrypted image to the FIT and add the key and IV to the u-boot device tree. Signed-off-by: Philippe Reynes <[email protected]>
2020-01-10dtimg/am57xx_evm_defconfig: Rename dtimg to adtimgEugeniu Rosca
Rename the existing 'dtimg' command to 'adtimg', in order to: - Suggest the Android origins and scope - Be consistent with the upcoming 'abootimg' command (naming suggested by Simon [*]) The change in _not_ backward compatible, but its benefits outweigh its downsides, given that we don't expect active users of 'dtimg' today. Perform the rename in several steps: 1. Rename *.c file and Kconfig symbol. This should allow 'git log --follow' to properly track the history of 'adtimg.c' 2. 's/dtimg/adtimg/g' in the internal namespace of 'adtimg.c' ELF comparison [**] before and after shows no functional change. [*] https://patchwork.ozlabs.org/patch/1182212/#2291600 [**] diff -u <(objdump -d cmd/dtimg.o) <(objdump -d cmd/adtimg.o) Cc: Tom Rini <[email protected]> Signed-off-by: Eugeniu Rosca <[email protected]> Reviewed-by: Simon Glass<[email protected]> Reviewed-by: Sam Protsenko <[email protected]>
2019-07-24common: Implement A/B metadataRuslan Trofymenko
This patch determines the A/B-specific bootloader message structure that is the basis for implementation of recovery and A/B update functions. A/B metadata is stored in this structure and used to decide which slot should we use to boot the device. Also some basic functions for A/B metadata manipulation are implemented (like slot selection). The patch was extracted from commits [1], [2] with some coding style fixes. [1] https://android-review.googlesource.com/c/platform/external/u-boot/+/729878/2 [2] https://android-review.googlesource.com/c/platform/external/u-boot/+/729880/2 Signed-off-by: Ruslan Trofymenko <[email protected]> Signed-off-by: Igor Opaniuk <[email protected]> Reviewed-by: Sam Protsenko <[email protected]> Reviewed-by: Simon Glass <[email protected]>
2019-05-23stm32mp1: ram: add interactive mode for DDR configurationPatrick Delaunay
This debug mode is used by CubeMX DDR tuning tools or manualy for tests during board bring-up. It is simple console used to change DDR parameters and check initialization. Signed-off-by: Patrick Delaunay <[email protected]>
2019-02-15usb: Rename SPL_USB_SUPPORT to SPL_USB_STORAGEAbel Vesa
Since there is the SPL_USB_HOST_SUPPORT for enabling USB support in SPL, makes more sense to rename the SPL_USB_SUPPORT as SPL_USB_STORAGE. Everything that is not part of the usb storage support in SPL is now build under SPL_USB_HOST_SUPPORT. Signed-off-by: Abel Vesa <[email protected]> Reviewed-by: Tom Rini <[email protected]> Reviewed-by: Fabio Estevam <[email protected]> Reviewed-by: Lukasz Majewski <[email protected]>
2019-01-26dfu: Remove dependency on HUSH parser in SPLAndrew F. Davis
CLI support with the HUSH parser is not currently SPL safe due to it's use of realloc. That function is not defined for SPLs that use SYS_MALLOC_SIMPLE. CLI support can be built in to SPL and some functions do work, but use of some like run_command() will cause build to fail. When no SPL code calls this function build works as the compiler removes this unreachable code so the unresolved symbols are ignored. If DFU support is enabled in SPL then MMU DFU support may get brought in also, this code does make a call to run_command() causing build to fail if the HUSH parser is not built-in. To break this odd and unneeded dependency chain we use CONFIG_IS_ENABLED where appropriate to prevent calls into HUSH code from SPL. This also removes our need to pull in the rather unrelated source file when SPL_DFU is defined. Signed-off-by: Andrew F. Davis <[email protected]> Reviewed-by: Tom Rini <[email protected]>
2019-01-26spl: Kconfig: Drop the _SUPPORT postfix from SPL_DFUAndrew F. Davis
The symbol CONFIG_SPL_DFU_SUPPORT in SPL build has the same meaning as CONFIG_DFU in regular U-Boot. Drop the _SUPPORT to allow for cleaner use in code. Signed-off-by: Andrew F. Davis <[email protected]> Reviewed-by: Tom Rini <[email protected]> Acked-by: Lukasz Majewski <[email protected]>
2018-12-14usb: musb-new: Add support for DM_USBJean-Jacques Hiblot
Enable DM for USB peripheral in the musb-new driver. Also make sure that the driver can be used in the SPL. This implies that: * the driver must work with and without the OF_CONTROL option. That in turn, implies that the platform data can be passed in a struct ti_musb_platdata or be read from the dtb * usb.o is linked in the SPL if host support is enabled Another change is that the driver does not fail to bind (and stop the boot process) if one of the child driver does not bind. Reporting the error is enough. This kind of error would appear if the port is configured in the DTS but the driver is not activated in the config. Signed-off-by: Jean-Jacques Hiblot <[email protected]> Reviewed-by: Tom Rini <[email protected]>
2018-11-26usb: Remove CMD_USB dependency for common codeSven Schwermer
Common USB code is built whenever USB is enabled (in non-SPL builds). The USB uclass is built whenever (SPL_)DM_USB is enabled. Both need to be independent from CMD_USB. Signed-off-by: Sven Schwermer <[email protected]>
2018-11-26Add core support for a bloblist to convey data from SPLSimon Glass
At present there is no standard way in U-Boot to pass information from SPL to U-Boot proper. But sometimes SPL wants to convey information to U-Boot that U-Boot cannot easily figure out. For example, if SPL sets up SDRAM then it might want to pass the size of SDRAM, or the location of each bank, to U-Boot proper. Add a new 'bloblist' feature which provides this. A bloblist is set up in the first phase of U-Boot that runs (i.e. TPL or SPL). The location of this info may be in SRAM or CAR (x86 cache-as-RAM) or somewhere else. Information placed in this region is preserved (with a checksum) through TPL and SPL and ends up in U-Boot. At this point it is copied into SDRAM so it can be used after relocation. Reviewed-by: Tom Rini <[email protected]> Signed-off-by: Simon Glass <[email protected]> Acked-by: Andreas Dannenberg <[email protected]>
2018-11-26spl: Add support for logging in SPL and TPLSimon Glass
It is sometimes useful to log information in SPL and TPL. Add support for this. Reviewed-by: Tom Rini <[email protected]> Signed-off-by: Simon Glass <[email protected]>
2018-11-20spl: Support bootstage, log, hash and early malloc in TPLSimon Glass
At present these features are supported in SPL but not TPL. Update the Kconfig and Makefile to allow this. Also add a few Makefile comments to make earier to track what is going on. Signed-off-by: Simon Glass <[email protected]>
2018-11-09common: build ymodem only on needJun Nie
Build ymodem only on need to shrink spl image size. Signed-off-by: Jun Nie <[email protected]>
2018-08-20cmd: Add dtimg commandSam Protsenko
dtimg command allows user to work with Android DTB/DTBO image format. Such as, getting the address of desired DTB/DTBO file, printing the dump of the image in U-Boot shell, etc. This command is needed to provide Android boot with new Android DT image format further. Signed-off-by: Sam Protsenko <[email protected]> Reviewed-by: Tom Rini <[email protected]>
2018-07-24avb2.0: add proper dependenciesIgor Opaniuk
1. Since libavb library alone is highly portable, introduce dedicated Kconfig symbol for AVB bootloader-dependent operations, so it's possible to build libavb separately. AVB bootloader-dependent operations include: * Helpers to process strings in order to build OS bootargs. * Helpers to access MMC, similar to drivers/fastboot/fb_mmc.c. * Helpers to alloc/init/free avb ops. 2. Add CONFIG_FASTBOOT dependency, as fastboot buffer is re-used in partition verification operations. Reported-by: Eugeniu Rosca <[email protected]> Signed-off-by: Igor Opaniuk <[email protected]> Reviewed-by: Eugeniu Rosca <[email protected]> Tested-by: Eugeniu Rosca <[email protected]>
2018-06-18avb2.0: implement AVB opsIgor Opaniuk
Implement AVB ops on top of existing mmc subsystem API. Currently there is a full implementation of such operations, defined by [1] AVB2.0 specification: .read_from_partition() - reads N bytes from a partition identified by a name. .write_to_partition() - Writes N bytes to a partition identified by a name. .validate_vbmeta_public_key() - checks if the given public ‘vbmeta’ partition is trusted. .get_unique_guid_for_partition() - Gets the GUID for a partition identified by a string name. As [1] specification recommends to use tamper-evident storage for storing rollback indexes and device state (LOCKED/UNLOCKED), currently are only stubs instead of full implementation for these ops: .read_rollback_index() - Gets the rollback index for a given index location .write_rollback_index() - Sets the rollback index to a given location .read_is_device_unlocked() - Gets where the device is unlocked [1] https://android.googlesource.com/platform/external/avb/+/master/README.md Signed-off-by: Igor Opaniuk <[email protected]>
2018-05-30mmc: Separate "mmc swrite" from fastbootAlex Kiernan
Introduce CONFIG_IMAGE_SPARSE and CONFIG_CMD_MMC_SWRITE so the "mmc swrite" command is separated from the fastboot code. Move image-sparse from common to lib so it's clear it's library code. Rename CONFIG_FASTBOOT_FLASH_FILLBUF_SIZE to CONFIG_IMAGE_SPARSE_FILLBUF_SIZE and migrate it to Kconfig. Signed-off-by: Alex Kiernan <[email protected]> Acked-by: Jassi Brar <[email protected]> Reviewed-by: Simon Glass <[email protected]>
2018-05-30fastboot: Move fastboot to drivers/fastbootAlex Kiernan
Separate CMD_FASTBOOT from FASTBOOT and move code and configuration to drivers/fastboot. Switch dependencies on FASTBOOT to USB_FUNCTION_FASTBOOT as anyone who wants FASTBOOT before this series wants USB_FUNCTION_FASTBOOT. Split USB_FUNCTION_FASTBOOT from FASTBOOT so they retain their existing behaviour. Signed-off-by: Alex Kiernan <[email protected]> Reviewed-by: Simon Glass <[email protected]> Acked-by: Joe Hershberger <[email protected]>
2018-05-07SPDX: Convert all of our single license tags to Linux Kernel styleTom Rini
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <[email protected]>
2018-02-21dfu: Rename _FUNCTION_DFU to DFU_OVER_Marek Vasut
Do the following to make the symbol names less confusing. sed -i "s/\([TU][^_]\+\)_FUNCTION_DFU/DFU_OVER_\1/g" \ `git grep _FUNCTION_DFU | cut -d ":" -f 1 | sort -u` Signed-off-by: Marek Vasut <[email protected]> Cc: Lukasz Majewski <[email protected]>
2018-02-21dfu: Fix up the Kconfig messMarek Vasut
Clean up the screaming mess of configuration options that DFU is. It was impossible to configure DFU such that TFTP is enabled and USB is not, this patch fixes that and assures that DFU TFTP and DFU USB can be enabled separatelly and that the correct pieces of code are compiled in. Signed-off-by: Marek Vasut <[email protected]> Cc: Lukasz Majewski <[email protected]>
2018-01-12common: do not compile common fastboot code when building the SPLJean-Jacques Hiblot
This is not required as fastboot can't be started from SPL. Signed-off-by: Jean-Jacques Hiblot <[email protected]>
2017-12-07log: Add a console driverSimon Glass
It is useful to display log messages on the console. Add a simple driver to handle this. Note that this driver outputs to the console, which may be serial or video. It does not specifically select serial output. Signed-off-by: Simon Glass <[email protected]> Reviewed-by: Bin Meng <[email protected]>