Commit graph

58600 commits

Author SHA1 Message Date
Patrick Delaunay
588448517f ram: stm32mp1_ram: Fix warnings when compiling with W=1
This patch solves the following warnings:

drivers/ram/stm32mp1/stm32mp1_ram.c: In function 'stm32mp1_ddr_clk_enable':
warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (idx = 0; idx < ARRAY_SIZE(clkname); idx++) {
                    ^
drivers/ram/stm32mp1/stm32mp1_ram.c: In function 'stm32mp1_ddr_setup':
warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (idx = 0; idx < ARRAY_SIZE(param); idx++) {
                    ^
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:50:56 +02:00
Patrick Delaunay
be56ab1b8f misc: stm32_fuse: Fix warnings when compiling with W=1
This patch solves the following warnings:

warning: no previous prototype for 'fuse_read' [-Wmissing-prototypes]
 int fuse_read(u32 bank, u32 word, u32 *val)
     ^~~~~~~~~
  CC      cmd/sf.o
warning: no previous prototype for 'fuse_prog' [-Wmissing-prototypes]
 int fuse_prog(u32 bank, u32 word, u32 val)
     ^~~~~~~~~
warning: no previous prototype for 'fuse_sense' [-Wmissing-prototypes]
 int fuse_sense(u32 bank, u32 word, u32 *val)
     ^~~~~~~~~~
warning: no previous prototype for 'fuse_override' [-Wmissing-prototypes]
 int fuse_override(u32 bank, u32 word, u32 val)
     ^~~~~~~~~~~~~

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:50:56 +02:00
Patrick Delaunay
c8a8937b92 power: regulator: stm32: Fix warnings when compiling with W=1
This patch solves the following warnings:

drivers/power/regulator/stm32-vrefbuf.c: In function 'stm32_vrefbuf_set_value':
warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if (uV == stm32_vrefbuf_voltages[i]) {
          ^~

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:50:56 +02:00
Patrick Delaunay
67d74ce2fa clk: clk_stm32mp1: Fix warnings when compiling with W=1
This patch solves the following warnings:

drivers/clk/clk_stm32mp1.c: In function 'stm32mp1_clk_get_parent':
warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (i = 0; i < ARRAY_SIZE(stm32mp1_clks); i++)
                ^
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:50:55 +02:00
Patrick Delaunay
499504ba06 i2c: stm32f7_i2c: Fix warnings when compiling with W=1
This patch solves the following warnings:

drivers/i2c/stm32f7_i2c.c: In function 'stm32_i2c_compute_solutions':
warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    if (scldel < scldel_min)
               ^
warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if (((sdadel >= sdadel_min) &&
                  ^~
warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
          (sdadel <= sdadel_max)) &&
                  ^~
drivers/i2c/stm32f7_i2c.c: In function 'stm32_i2c_choose_solution':
warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
      if (clk_error < clk_error_prev) {
                    ^
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:50:55 +02:00
Patrick Delaunay
99e14b2793 gpio: stm32_gpio: Fix warnings when compiling with W=1
This patch solves the following warnings:

drivers/gpio/stm32_gpio.c: In function 'stm32_offset_to_index':
: comparison between signed and unsigned integer expressions [-Wsign-compare]
    if (idx == offset)
            ^~
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:50:55 +02:00
Patrick Delaunay
c0d7f1fbad adc: stm32: Fix warnings when compiling with W=1
This patch solves the following warnings:

drivers/adc/stm32-adc-core.c: In function 'stm32h7_adc_clk_sel':
warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (i = 0; i < ARRAY_SIZE(stm32h7_adc_ckmodes_spec); i++) {
                 ^
warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (i = 0; i < ARRAY_SIZE(stm32h7_adc_ckmodes_spec); i++) {
                ^
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Acked-by: Fabrice Gasnier <fabrice.gasnier@st.com>
2019-07-12 11:50:55 +02:00
Patrick Delaunay
0fb0365673 adc: stm32-adc: Fix warnings when compiling with W=1
This patch solves the following warnings:

drivers/adc/stm32-adc.c: In function 'stm32_adc_chan_of_init':
warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if (num_channels > adc->cfg->max_channels) {
                   ^
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Acked-by: Fabrice Gasnier <fabrice.gasnier@st.com>
2019-07-12 11:50:55 +02:00
Patrick Delaunay
745b676d00 stm32mp1: bsec: Fix warnings when compiling with W=1
This patch solves the following warnings:

arch/arm/mach-stm32mp/bsec.c: In function 'stm32mp_bsec_read':
warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if (offset >= STM32_BSEC_OTP_OFFSET) {
             ^~
arch/arm/mach-stm32mp/bsec.c: In function 'stm32mp_bsec_write':
warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if (offset >= STM32_BSEC_OTP_OFFSET) {
             ^~
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:50:54 +02:00
Patrick Delaunay
0e9fb25f71 mmc: stm32_sdmmc2: avoid warnings when building with W=1 option
This patch solves warnings detected by setting W=1 when building.

Warnings type detected:
 - [-Wmissing-prototypes]
 - [-Wimplicit-fallthrough=]

Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:50:54 +02:00
Patrick Delaunay
585289b4fc serial: stm32: Fix warnings when compiling with W=1
This patch solves the following warnings:

drivers/serial/serial_stm32.c: In function 'stm32_serial_probe':
warning: comparison of unsigned expression < 0 is always false [-Wtype-limits]
  if (plat->clock_rate < 0) {
                       ^

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:50:54 +02:00
Patrick Delaunay
8e1947774e board: stm32mp1: Fix warnings when compiling with W=1
This patch solves the following warnings:

warning: no previous prototype for 'board_quiesce_devices' [-Wmissing-prototypes]
 void board_quiesce_devices(void)
      ^~~~~~~~~~~~~~~~~~~~~

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:50:54 +02:00
Patrick Delaunay
e609e131c1 stm32mp1: Fix warnings when compiling with W=1
This patch solves the following warnings:

arch/arm/mach-stm32mp/cpu.c:378:16: warning: comparison between signed
and unsigned integer expressions [-Wsign-compare]
   if (instance > ARRAY_SIZE(serial_addr))
                ^

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:50:54 +02:00
Patrice Chotard
9421781466 MAINTAINERS: Add git custodians for ARM STM STM32MP entry
Add git custodians for STMicroelectronics STM32MP entry.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
2019-07-12 11:50:53 +02:00
Patrick Delaunay
cc06c5f6cd stm32mp1: add SPI flash support in SPL
Allow boot from NOR with basic boot.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:50:53 +02:00
Patrick Delaunay
a1ac522c04 stm32mp1: Add UBIFS boot capability
Add support for boot from NAND in generic ditribution command.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:50:53 +02:00
Patrick Delaunay
e81f8d16e2 stm32mp1: activate OF_BOARD_SETUP and FDT_FIXUP_PARTITIONS
Update kernel MTD partition in device tree with U-Boot information.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:50:53 +02:00
Patrick Delaunay
152c84bce9 stm32mp1: add configuration op-tee
Add support of Trusted boot chain with OP-TEE
- reserved 32MB at the end of the DDR for OP-TEE

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:50:52 +02:00
Patrick Delaunay
c840c29472 stm32mp1: reorder some CONFIG in stm32mp1.h
Change config not directly linked to CONFIG_DISTRO_DEFAULTS.
Allow to deactivate CONFIG_SYS_MTDPARTS_RUNTIME when
CONFIG_MTDPARTS_DEFAULT is defined in defconfig.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:18:53 +02:00
Patrick Delaunay
82cd1a2a04 pmic: stpmic1: add support for SYSRESET_POWER_OFF
Adds support for SYSRESET_POWER_OFF = PMIC power off used by command
power off and introduced by commit 751fed426f ("sysreset: Add a way
to find the last reset").
The driver use SYSRESET_POWER for the PMIC-level power cycle, with restart.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:18:53 +02:00
Patrick Delaunay
35a54d41d9 ARM: dts: stm32mp1: sync device tree with v5.2-rc4
Synchronize device tree with v5.2-rc4 label and
update the associated u-boot dtsi.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Tested-by: Pierre-Jean Texier <pjtexier@koncepto.io>
2019-07-12 11:18:53 +02:00
Patrick Delaunay
2ed212c1a2 stm32mp1: force boot_net_usb_start
Prevent USB enumeration and avoid unnecessary delay in bootcmd_pxe
as Ethernet device is not attached to USB.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:18:53 +02:00
Patrick Delaunay
22bed7ee49 stm32mp1: add check for presence of environment in boot device
For boot from flash, check presence of default environment to force
save env.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Tested-by: Pierre-Jean Texier <pjtexier@koncepto.io>
2019-07-12 11:18:53 +02:00
Patrick Delaunay
03cc423d8a stm32mp1: configs: Add CONFIG_OF_SPL_REMOVE_PROPS
Removes unused device tree property in SPL
to reduce the SPL size by 1kB

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:18:53 +02:00
Patrick Delaunay
25d436a624 stm32mp1: cosmetic: remove unnecessary include
Remove post.h include as it is used in spl.c

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:18:53 +02:00
Patrick Delaunay
526558c63b stm32mp1: update README
Add latest information and correct some information.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:18:53 +02:00
Patrick Delaunay
f4cb5d69c2 stm32mp1: key: add stm32key command
Add dedicated command to register in fuse a public hash
key provided by keygen tool.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:18:53 +02:00
Patrick Delaunay
afb0840ffa stm32mp1: add stboard command
Allow to update board identification in OTP 59.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:18:53 +02:00
Patrick Delaunay
c60f3b3589 stm32mp1: update device tree with ETZPC status
U-Boot should disable nodes in device tree if needed according
ETZPC status in ft_system_setup().

ETZPC itself use an array on addresses to do the match between the status
bits and the node.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:18:53 +02:00
Patrick Delaunay
05d3693688 stm32mp1: update package information in device tree
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:18:53 +02:00
Patrick Delaunay
24cb4587f4 stm32mp1: export get_cpu_package function
Prepare update of package information update
in Linux device tree.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:18:53 +02:00
Patrick Delaunay
d3f077b349 dt-bindings: pinctrl: stm32: add new entry for package information
Add "st,package" entry. Possibles values are:
-STM32MP_PKG_AA for LFBGA448 (18*18) package
-STM32MP_PKG_AB for LFBGA354 (16*16) package
-STM32MP_PKG_AC for TFBGA361 (12*12) package
-STM32MP_PKG_AD for TFBGA257 (10*10) package

see Linux commit 966d9b928f626a54a0c27c0fdae1e3dfe9bab416
for v5.2-rc1

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:18:53 +02:00
Patrick Delaunay
dfda7d4c83 stm32mp1: syscon: remove stgen
Reduce difference with kernel Linux device tree.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:18:53 +02:00
Patrick Delaunay
72d18583a1 stm32mp1: syscon: remove etzpc support
Support for ETZPC is removed as this device is not present
in Linux kernel device tree.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:18:53 +02:00
Patrick Delaunay
f59ad456ff stm32mp1: call regulators_enable_boot_on in board_init
U-Boot activates regulators by reading the "regulator-boot-on"
property in DT; it is requested by M4 early Boot feature.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:18:53 +02:00
Patrick Delaunay
ca351e705a stm32mp1: deactivate WATCHDOG in defconfig
Deactivate WATCHDOG by default in u-boot to avoid issue to boot kernel
and rootfs without the needed daemon to reload it.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Tested-by: Pierre-Jean Texier <pjtexier@koncepto.io>
2019-07-12 11:18:53 +02:00
Patrick Delaunay
486942184a sysreset: syscon: add support for power off
The new type sysreset 'POWER_OFF', introduced by
commit 751fed426f ("sysreset: Add a way to find the last reset")
is only supported for "syscon-poweroff" compatible.

For details see Linux binding:
./Documentation/devicetree/bindings/power/reset/syscon-poweroff.txt

This patch removes the support of POWER_OFF for "syscon-reboot"
and keeps only the COLD reset (for command reset support)
and it introduces the compatible "syscon-poweroff"
for the POWER_OFF case.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:18:53 +02:00
Patrick Delaunay
4048e171d2 stm32mp1: move CONFIG_ENV in Kconfig
Move 2 ENV configuration flags in board Kconfig
- CONFIG_ENV_SECT_SIZE
- CONFIG_ENV_OFFSET

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2019-07-12 11:18:53 +02:00
Fabien Dessenne
1958dae4f3 ARM: dts: stm32: Add ipcc mailbox support on stm32mp1
Add IPCC mailbox support on stm32mp157 eval and disco boards.

Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
2019-07-12 11:18:53 +02:00
Fabien Dessenne
8da622d818 configs: stm32mp15: enable IPCC mailbox
Activate the ipcc mailbox for stm32mp15 configs.

Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
2019-07-12 11:18:53 +02:00
Fabien Dessenne
b04553ec9a MAINTAINERS: Add stm32 mailbox IPPC driver
Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
2019-07-12 11:18:53 +02:00
Fabien Dessenne
01964d8e23 mailbox: introduce stm32-ipcc driver
On STM32 family, the IPCC peripheral allows the communication
between 2 processors offering doorbells mechanism.

Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>
Signed-off-by: Loic Pallardy <loic.pallardy@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
2019-07-12 11:18:53 +02:00
Tom Rini
a9758ece08 - Sandbox improvements including .dts refactor
- Minor tracing and PCI improvements
 - Various other minor fixes
 - Conversion of patman, dtoc and binman to support Python 3
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Merge tag 'dm-pull-9jul19-take2' of https://gitlab.denx.de/u-boot/custodians/u-boot-dm

- Sandbox improvements including .dts refactor
- Minor tracing and PCI improvements
- Various other minor fixes
- Conversion of patman, dtoc and binman to support Python 3
2019-07-11 18:10:11 -04:00
Tom Rini
68deea2308 Merge https://gitlab.denx.de/u-boot/custodians/u-boot-marvell
- SPL SATA enhancements to allow booting from RAW SATA device
  needed for Clearfog (Baruch)
- Enable SATA booting on Clearfog (Baruch)
- Misc changes to Turris Omnia (Marek)
- Enable CMD_BOOTZ and increase SYS_BOOTM_LEN on crs305-1g-4s
  (Luka)
- Enable FIT support for db-xc3-24g4xg (Chris)
- Enable DM_SPI on Keymile Kirkwood board with necessary changes
  for this (Pascal)
- Set 38x and 39x AVS on lower frequency (Baruch)
2019-07-11 18:09:38 -04:00
Tom Rini
79b8d3c285 UniPhier SoC updates for v2019.10
- import DT updates from Linux
 
 - add UniPhier SPI controller driver
 
 - make U-Boot image for 64bit SoCs position independent
 
 - tidy up various init code for next generation SoCs
 
 - misc cleanups
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Merge tag 'uniphier-v2019.10' of https://gitlab.denx.de/u-boot/custodians/u-boot-uniphier

UniPhier SoC updates for v2019.10

- import DT updates from Linux

- add UniPhier SPI controller driver

- make U-Boot image for 64bit SoCs position independent

- tidy up various init code for next generation SoCs

- misc cleanups
2019-07-11 18:08:44 -04:00
Tom Rini
5acce685c9 Merge branch '2019-07-11-master-imports'
- spear platform improvements
- Android BCB support
- Cadence PCIe endpoint driver
2019-07-11 18:03:52 -04:00
Marek Vasut
4a09831ab2 gpio: pca953x: Add TI TCA9539 compatible string
Add TI TCA9539 compatible string for yet another I2C GPIO expander.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Mario Six <mario.six@gdsys.cc>
Cc: Peng Fan <van.freenix@gmail.com>
Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
2019-07-11 14:11:20 -04:00
Marek Vasut
b2a2bf41ac arm: mach-omap2: am33xx: Init pinmux before clock
The board_early_init_f() inits clock before initing pinmux. However,
the clock configuration code might need to adjust PMIC settings of a
PMIC on I2C bus (e.g. board/ti/am335x/board.c does that). If the I2C
bus pin muxing is not configured before attempting to communicate
with the PMIC, the communication will silently fail and the prcm_init()
may configure fast enough CPU clock that the default voltage provided
by the PMIC would be insufficient and the platform would become
unstable.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Jean-Jacques Hiblot <jjhiblot@ti.com>
Cc: Tom Rini <trini@konsulko.com>
2019-07-11 14:11:20 -04:00
Eugeniu Rosca
9bdf0e8fef doc: relocate/rename Android README and add BCB overview
Rename:
 - doc/{README.avb2 => android/avb2.txt}
 - doc/{README.android-fastboot => android/fastboot.txt}

Add a new file documenting the 'bcb' command:
 - doc/android/bcb.txt

The new directory structure has been reviewed by Simon in
https://patchwork.ozlabs.org/patch/1101107/#2176031 .

Signed-off-by: Eugeniu Rosca <erosca@de.adit-jv.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2019-07-11 14:11:19 -04:00
Eugeniu Rosca
db7b7a05b2 cmd: Add 'bcb' command to read/modify/write BCB fields
'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>
2019-07-11 14:11:19 -04:00