Add Kconfig option(CONFIG_CMD_MP) to enable or disable multiprocessor
commands. Compile cmd/mp.c based on CONFIG_CMD_MP.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Commit 98f705c9ce ("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 <ovidiu.panait@windriver.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
At present the 'efi' command only works in the EFI payload. Update it to
work in the app too, so the memory map can be examined.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Allow the kaslr-seed value in the chosen node to be set from a hardware
rng source.
Tested on a Rockchip PX30 (Odroid Go Advance), you must have loaded
the devicetree first and prepared it for editing. On my device the
workflow goes as follows:
setenv dtb_loadaddr "0x01f00000"
load mmc 0:1 ${dtb_loadaddr} rk3326-odroid-go2.dtb
fdt addr ${dtb_loadaddr}
fdt resize
kaslrseed
and the output can be seen here:
fdt print /chosen
chosen {
kaslr-seed = <0x6f61df74 0x6f7b996c>;
stdout-path = "serial2:115200n8";
};
Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Move the header file into the main include/ directory so we can use it
from the bootmethod code. Move the C file into boot/ since it relates to
booting.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Artem Lapkin <email2tema@gmail.com>
Tested-by: Artem Lapkin <email2tema@gmail.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
Add format string handling operator to the setexpr command.
It allows to use C or Bash like format string expressions to be
evaluated with the result being stored inside the environment variable
name.
setexpr <name> fmt <format> [value]...
The following example
setexpr foo fmt "%d, 0x%x" 0x100 ff
will result in $foo being set to "256, 0xff".
Signed-off-by: Roland Gaudig <roland.gaudig@weidmueller.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This patch adds a new "extension" command, which aims at detecting
extension boards connected to the hardware platform, and apply the
Device Tree overlays that describe the hardware present on those
extension boards.
In order to enable this mechanism, board-specific code must implement
the extension_board_scan() function that fills in a linked list of
"struct extension", each describing one extension board. In addition,
the board-specific code must select the SUPPORT_EXTENSION_SCAN Kconfig
boolean.
Based on this:
- "extension scan" makes the generic code call the board-specific
extension_board_scan() function to retrieve the list of detected
extension boards.
- "extension list" allows to list the detected extension boards.
- "extension apply <number>|all" allows to apply the Device Tree
overlay(s) corresponding to one, or all, extension boards
The latter requires two environment variables to exist and set one variable
to run:
- extension_overlay_addr: the RAM address where to load the Device
Tree overlays
- extension_overlay_cmd: the U-Boot command to load one overlay.
Indeed, the location and mechanism to load DT overlays is very setup
specific.
- extension_overlay_name: set by the command: the name of the DT which
will be load during the execution.
When calling the command described in the extension_overlay_cmd
variable, the variable extension_overlay_name will be defined. So a
typical extension_overlay_cmd will look like this:
extension_overlay_cmd=load mmc 0:1 $extension_overlay_addr /boot/$extension_overlay_name
Here is an example on how to use it:
=> run loadfdt
=> fdt addr $fdtaddr
=> setenv extension_overlay_addr 0x1000
=> setenv extension_overlay_cmd 'load mmc 0:1 ${extension_overlay_addr} /boot/${extension_overlay_name}'
=> extension scan
Found 1 extension board(s).
=> extension apply 0
519 bytes read in 3 ms (168.9 KiB/s)
Signed-off-by: Kory Maincent <kory.maincent@bootlin.com>
Reviewed-by: Maxime Ripard <maxime@cerno.tech>
Add support for stack protector for UBOOT, SPL, and TPL
as well as new pytest for stackprotector
Signed-off-by: Joel Peshkin <joel.peshkin@broadcom.com>
Adjust UEFI build flags.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Enable and provision the SCP03 keys on a TEE controlled secured elemt
from the U-Boot shell.
Executing this command will generate and program new SCP03 encryption
keys on the secure element NVM.
Depending on the TEE implementation, the keys would then be stored in
some persistent storage or better derived from some platform secret
(so they can't be lost).
Signed-off-by: Jorge Ramirez-Ortiz <jorge@foundries.io>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Igor Opaniuk <igor.opaniuk@foundries.io>
This adds a new command 'addrmap' to display the address map for
non-identity virtual-physical memory mappings.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
Add the command "pwm" for controlling the pwm channels. This
command provides pwm invert/config/enable/disable functionalities
via PWM uclass drivers
Signed-off-by: Pragnesh Patel <pragnesh.patel@sifive.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Add a 'mbr' command to let users create or verify MBR partition layout
based on the provided text description. The partition layout is
alternatively read from the 'mbr_parts' environment variable. This can be
used in scripts to help system image flashing tools to ensure proper
partition layout.
The syntax of the text description of the partition list is similar to
the one used by the 'gpt' command. Supported parameters are: name
(currently ignored), start (partition start offset in bytes), size (in
bytes or '-' to expand it to the whole free area), bootable (boolean
flag) and id (MBR partition type). If one wants to create more than 4
partitions, an 'Extended' primary partition (with 0x05 ID) has to be
explicitely provided as a one of the first 4 entries.
Here is an example how to create a 6 partitions (3 on the 'extended
volume'), some of the predefined sizes:
> setenv mbr_parts 'name=boot,start=4M,size=128M,bootable,id=0x0e;
name=rootfs,size=3072M,id=0x83;
name=system-data,size=512M,id=0x83;
name=[ext],size=-,id=0x05;
name=user,size=-,id=0x83;
name=modules,size=100M,id=0x83;
name=ramdisk,size=8M,id=0x83'
> mbr write mmc 0
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Implement the commands
* exception undefined - execute an illegal instruction
* exception sigsegv - cause a segment violation
Here is a possible output:
=> exception undefined
Illegal instruction
pc = 0x55eb8d0a7575, pc_reloc = 0x57575
Resetting ...
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
This command lets the user list, select, and deselect mux controllers
introduced with the mux framework on the fly. It has 3 subcommands:
list, select, and deselect.
List: Lists all the mux present on the system. The muxes are listed for
each chip. The chip is identified by its device name. Each chip can have
a number of mux controllers. Each is listed in sequence and is assigned
a sequential ID based on its position in the mux chip. It lists details
like ID, whether the mux is currently selected or not, the current
state, the idle state, and the number of states.
A sample output would look something like:
=> mux list
a-mux-controller:
ID Selected Current State Idle State Num States
0 no unknown as-is 0x4
1 no 0x2 0x2 0x10
2 no 0x73 0x73 0x100
another-mux-controller:
ID Selected Current State Idle State Num States
0 no 0x1 0x1 0x4
1 no 0x2 0x2 0x4
Select: Selects a given mux and puts it in the specified state. This
subcommand takes 3 arguments: mux chip, mux ID, state to set
the mux in. The arguments mux chip and mux ID are used to identify which
mux needs to be selected, and then it is selected to the given state.
The mux needs to be deselected before it can be selected again in
another state. The state should be a hexadecimal number.
For example:
=> mux list
a-mux-controller:
ID Selected Current State Idle State Num States
0 no 0x1 0x1 0x4
1 no 0x1 0x1 0x4
=> mux select a-mux-controller 0 0x3
=> mux list
a-mux-controller:
ID Selected Current State Idle State Num States
0 yes 0x3 0x1 0x4
1 no 0x1 0x1 0x4
Deselect: Deselects a given mux and puts it in its idle state. This
subcommand takes 2 arguments: the mux chip and mux ID to identify which
mux needs to be deselected. So in the above example, we can deselect mux
0 using:
=> mux deselect a-mux-controller 0
=> mux list
a-mux-controller:
ID Selected Current State Idle State Num States
0 no 0x1 0x1 0x4
1 no 0x1 0x1 0x4
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Enable the command "misc" for accessing miscellaneous devices with
a MISC uclass driver. The command provides listing all MISC devices
as well as read and write functionalities via their drivers.
Signed-off-by: Bin Meng <bin.meng@windriver.com>
The "cmd/Kconfig" has a TODO description for CMD_MISC that it should
really be named as CMD_SLEEP. Change it in the whole source tree.
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Enable "optee_rpmb" command to write/read named persistent values
created on RPMB by opening session with OPTEE AVB TA.
This provides easy test for establishing a session with OPTEE
TA and storage of persistent data in MMC RPMB.
It includes following subcommands:
optee_rpmb read_pvalue:read persistent values on rpmb via OPTEE AVB TA
optee_rpmb write_pvalue:write persistent values on rpmb via OPTEE AVB
TA
Signed-off-by: Ruchika Gupta <ruchika.gupta@nxp.com>
[Rebased]
Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
This patch adds a new pstore command allowing to display or save ramoops
logs (oops, panic, console, ftrace and user) generated by a previous
kernel crash.
PStore parameters can be set in U-Boot configuration file, or at run-time
using "pstore set" command. Records size should be the same as the ones
used by kernel, and should be a power of 2.
This command allows:
- to display uncompressed logs
- to save compressed or uncompressed logs, compressed logs are saved as a
compressed stream, it may need some work to be able to decompress it,
e.g. adding a fake header:
"printf "\x1f\x8b\x08\x00\x00\x00\x00\x00\x00\x00" |
cat - dmesg-ramoops-0.enc.z | gzip -dc"
- ECC part is not used to check memory corruption
- only 1st FTrace log is displayed or saved
Signed-off-by: Frédéric Danis <frederic.danis@collabora.com>
[trini: Minor updates for current design, correct spacing in rST]
Signed-off-by: Tom Rini <trini@konsulko.com>
Cc: Heinrich Schuchardt <xypron.glpk@gmx.de>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Heiko Schocher <hs@denx.de>
It is helpful to be able to see basic statistics about the bloblist and
also to list its contents. Add a 'bloblist' command to handle this.
Put the display functions in the bloblist modules rather than in the
command code itself. That allows showing a list from SPL, where commands
are not available.
Also make bloblist_first/next_blob() static as they are not used outside
this file.
Signed-off-by: Simon Glass <sjg@chromium.org>
Extend Kconfig for the board with board-specific commands selection.
Signed-off-by: Vladimir Olovyannikov <vladimir.olovyannikov@broadcom.com>
Signed-off-by: Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Add initial infrastructure for Xen para-virtualized block device.
This includes compile-time configuration and the skeleton for
the future driver implementation.
Add new class UCLASS_PVBLOCK which is going to be a parent for
virtual block devices.
Add new interface type IF_TYPE_PVBLOCK.
Implement basic driver setup by reading XenStore configuration.
Signed-off-by: Andrii Anisov <andrii_anisov@epam.com>
Signed-off-by: Anastasiia Lukianenko <anastasiia_lukianenko@epam.com>
Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
This patch adds a feature for block device cloning similar to dd
command, this should be useful for boot-strapping a device where
usb gadget or networking is not available. For instance one can
clone a factory image into a blank emmc from an external sd card.
Signed-off-by: John Chau <john@harmon.hk>
Adds a command 'button' that provides the list of buttons
supported by the board, and the state of a button.
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
The `fitupd' command is not used by any board. The `dfu tftp' command
provides the same capabilities.
So let's drop the `fitupd' command.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Mostly as an aid for debugging RTC drivers, provide a command that can
be used to read/write arbitrary registers (assuming the driver
provides the read/write methods or their single-register-at-a-time
variants).
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Even in boot scripts it may be needed to "panic" when all options
are exhausted and the device specification specifies hanging
instead of resetting the board.
So add a new panic command that just wraps around the core panic
call in U-Boot and can take an optional message.
Signed-off-by: Heiko Stuebner <heiko.stuebner@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
Add a command to print a list of available block device drivers,
and for each, the list of known block devices.
Signed-off-by: Niel Fourie <lusus@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
It is useful to dump ACPI tables in U-Boot to see what has been generated.
Add a command to handle this.
To allow the command to find the tables, add a position into the global
data.
Support subcommands to list and dump the tables.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
This command is a new command called "unlz4" that decompresses from memory
into memory.
Used with the CONFIG_CMD_UNLZ4 optionenabled.
Signed-off-by: Yusuke Ashiduka <ashiduka@fujitsu.com>
[trini: Use %zd / %zX not %ld / %lX in printf]
Signed-off-by: Tom Rini <trini@konsulko.com>
This command can be used to extract fields and image payloads from
Android Boot Image. It can be used for example to implement boot flow
where dtb is taken from boot.img (as v2 incorporated dtb inside of
boot.img). Using this command, one can obtain needed dtb blob from
boot.img in scripting manner, and then apply needed dtbo's (from "dtbo"
partition) on top of that, providing then the resulting image to bootm
command in order to boot the Android.
Also right now this command has the sub-command to get an address and
size of recovery dtbo from recovery image (for non-A/B devices only,
see [1,2] for details).
It can be tested like this:
=> mmc dev 1
=> part start mmc 1 boot_a boot_start
=> part size mmc 1 boot_a boot_size
=> mmc read $loadaddr $boot_start $boot_size
=> abootimg get ver
=> abootimg dump dtb
[1] https://source.android.com/devices/bootloader/boot-image-header
[2] https://source.android.com/devices/architecture/dto/partitions
Signed-off-by: Sam Protsenko <joe.skb7@gmail.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Add support for read/write of ONIE "Tlvinfo" EEPROM data format. TLV
stands for Type-Length-Value. The data format is described here:
https://opencomputeproject.github.io/onie/design-spec/hw_requirements.html#board-eeprom-information-format
Based on U-Boot patch from the Open Compute project:
ec87e872d4/patches/u-boot/common/feature-sys-eeprom-tlv-common.patch
Keep only I2C EEPROM support. Use the generic eeprom driver. Fix
checkpatch issues.
Add support for multiple EEPROM TLV stores on the same system. This is
useful in case of SOM and carrier that both provide ID and hardware
configuration information.
Add option to enable for SPL. This allows selection of RAM configuration
based on EEPROM stored board identification.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
This seems pretty old now. It has not been converted to driver model and
is not used by any boards.
Drop it.
Signed-off-by: Simon Glass <sjg@chromium.org>
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 <trini@konsulko.com>
Signed-off-by: Eugeniu Rosca <erosca@de.adit-jv.com>
Reviewed-by: Simon Glass<sjg@chromium.org>
Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
For the RNG uclass we currently only have a test working on the sandbox.
Provide a command to test the hardware random number generator on
non-sandbox systems.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
* Add Kconfig help describing the purpose of each command.
* Add CONFIG_CMD_MDIO so it could be selected individually, as
it doesn't depend on the mii command.
* Add Kconfig imply to mii to automatically select the mdio
command.
Signed-off-by: Ramon Fried <rfried.dev@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Extract all sysboot command related code from pxe.c to new sysboot.c
Update Kconfig to insure that DISTRO_DEFAULT select new CMD_SYSBOOT
command.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
As sysboot and pxe commands are sharing piece of code, migrate this
common code into a new file pxe_utils.c to prepare sysboot command
code extraction from pxe.c
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
The 'sf' command is not supposed to rely on the MTD stack, but both
'sf' and 'nand' commands use helpers located in mtd_uboot.c. Despite
their location, these functions do not depend at all on the MTD
stack.
This file (drivers/mtd/mtd_uboot.c) is only compiled if CONFIG_MTD is
selected, which is inconsistent with the current situation. Solve this
by moving these three functions (which are only used by the above two
commands) out of mtd_uboot.c and put them in a C file only compiled
with cmd/sf.c and cmd/nand.c.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
[trini: Don't export get_part function now]
Signed-off-by: Tom Rini <trini@konsulko.com>
When we do not have CONFIG_BLK (or SPL/TPL) enabled there are very few
cases where we need the blk_legacy code linked in. To catch these, build
when we have CONFIG_HAVE_BLOCK_DEVICE set. In addition, we only need
cmd/blk_common.o to be linked in when we have CONFIG_HAVE_BLOCK_DEVICE
set, so make use of that directly.
Signed-off-by: Tom Rini <trini@konsulko.com>
Add Support for commands to initialize and configure UFS devices.
TODO: Add Support for commands to resize and reconfigure LUNs
Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Add support for capturing ethernet packets and storing
them in memory in PCAP(2.4) format, later to be analyzed by
any PCAP viewer software (IE. Wireshark)
This feature greatly assist debugging network issues such
as detecting dropped packets, packet corruption etc.
Signed-off-by: Ramon Fried <rfried.dev@gmail.com>
Reviewed-by: Alex Marginean <alexm.osslist@gmail.com>
Tested-by: Alex Marginean <alexm.osslist@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
For A/B system update support the Android boot process requires to send
'androidboot.slot_suffix' parameter as a command line argument. This
patch implementes 'ab_select' command which allows us to obtain current
slot by processing the A/B metadata.
The patch was extracted from commit [1] with one modification: the
separator for specifying the name of metadata partition was changed
from ';' to '#', because ';' is used for commands separation.
[1] https://android-review.googlesource.com/c/platform/external/u-boot/+/729880/2
Signed-off-by: Ruslan Trofymenko <ruslan.trofymenko@linaro.org>
Signed-off-by: Igor Opaniuk <igor.opaniuk@gmail.com>
Reviewed-by: Alistair Strachan <astrachan@google.com>
Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
The mmc_spi command was added to manually setup MMC over SPI bus
using command. This was required by the legacy non-DM MMC_SPI driver.
With DM based MMC_SPI driver in-place, we can now use all general
storge commands and mmc command for MMC over SPI bus hence we remove
the mmc_spi command all it's references.
Suggested-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
'Bootloader Control Block' (BCB) is a well established term/acronym in
the Android namespace which refers to a location in a dedicated raw
(i.e. FS-unaware) flash (e.g. eMMC) partition, usually called "misc",
which is used as media for exchanging messages between Android userspace
(particularly recovery [1]) and an Android-capable bootloader.
On higher level, this allows implementing a subset of Android Bootloader
Requirements [2], amongst which is the Android-specific bootloader
flow [3]. Regardless how the latter is implemented in U-Boot ([3] being
the most memorable example), reading/writing/dumping the BCB fields in
the development process from inside the U-Boot is a convenient feature.
Hence, make it available to the users.
Some usage examples of the new command recorded on R-Car H3ULCB-KF
('>>>' is an overlay on top of the original console output):
=> bcb
bcb - Load/set/clear/test/dump/store Android BCB fields
Usage:
bcb load <dev> <part> - load BCB from mmc <dev>:<part>
bcb set <field> <val> - set BCB <field> to <val>
bcb clear [<field>] - clear BCB <field> or all fields
bcb test <field> <op> <val> - test BCB <field> against <val>
bcb dump <field> - dump BCB <field>
bcb store - store BCB back to mmc
Legend:
<dev> - MMC device index containing the BCB partition
<part> - MMC partition index or name containing the BCB
<field> - one of {command,status,recovery,stage,reserved}
<op> - the binary operator used in 'bcb test':
'=' returns true if <val> matches the string stored in <field>
'~' returns true if <val> matches a subset of <field>'s string
<val> - string/text provided as input to bcb {set,test}
NOTE: any ':' character in <val> will be replaced by line feed
during 'bcb set' and used as separator by upper layers
=> bcb dump command
Error: Please, load BCB first!
>>> Users must specify mmc device and partition before any other call
=> bcb load 1 misc
=> bcb load 1 1
>>> The two calls are equivalent (assuming "misc" has index 1)
=> bcb dump command
00000000: 62 6f 6f 74 6f 6e 63 65 2d 73 68 65 6c 6c 00 72 bootonce-shell.r
00000010: 79 00 72 00 00 00 00 00 00 00 00 00 00 00 00 00 y.r.............
>>> The output is in binary/string format for convenience
>>> The output size matches the size of inspected BCB field
>>> (32 bytes in case of 'command')
=> bcb test command = bootonce-shell && echo true
true
=> bcb test command = bootonce-shell- && echo true
=> bcb test command = bootonce-shel && echo true
>>> The '=' operator returns 'true' on perfect match
=> bcb test command ~ bootonce-shel && echo true
true
=> bcb test command ~ bootonce-shell && echo true
true
>>> The '~' operator returns 'true' on substring match
=> bcb set command recovery
=> bcb dump command
00000000: 72 65 63 6f 76 65 72 79 00 73 68 65 6c 6c 00 72 recovery.shell.r
00000010: 79 00 72 00 00 00 00 00 00 00 00 00 00 00 00 00 y.r.............
>>> The new value is NULL-terminated and stored in the BCB field
=> bcb set recovery "msg1:msg2:msg3"
=> bcb dump recovery
00000040: 6d 73 67 31 0a 6d 73 67 32 0a 6d 73 67 33 00 00 msg1.msg2.msg3..
00000050: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00000060: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
>>> --- snip ---
>>> Every ':' is replaced by line-feed '\n' (0xA). The latter is used
>>> as separator between individual commands by Android userspace
=> bcb store
>>> Flush/store the BCB structure to MMC
[1] https://android.googlesource.com/platform/bootable/recovery
[2] https://source.android.com/devices/bootloader
[3] https://patchwork.ozlabs.org/patch/746835/
("[U-Boot,5/6] Initial support for the Android Bootloader flow")
Signed-off-by: Eugeniu Rosca <erosca@de.adit-jv.com>
