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Commit 488445cefa1 ("doc: Move FIT into its own directory") moved the
documentation in doc/uImage.FIT to doc/usage/fit, subsequently all
documents and example sources have been converted to reStructuredText.
Fix (almost) all of the remaining occurrences of the old path and
filenames across the tree.
The exception is doc/uImage.FIT/command_syntax_extensions.txt which
apparently has been removed entirely, or at least I was unable to
locate where that document is now.
Signed-off-by: Daniel Golle <[email protected]>
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U-Boot does work on Qualcomm 845-based Pixel 3 and 3 XL.
Reviewed-by: Simon Glass <[email protected]>
Reviewed-by: Casey Connolly <[email protected]>
Signed-off-by: David Heidelberg <[email protected]>
Reviewed-by: Petr Vorel <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Casey Connolly <[email protected]>
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CONFIG_BAUDRATE is not relevant for the QUP driver, and neither is
CONFIG_DEBUG_UART_SKIP_INIT so remove them from the doc.
Signed-off-by: Luca Weiss <[email protected]>
Reviewed-by: Neil Armstrong <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Casey Connolly <[email protected]>
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I updated the mailmap a while back but it's nice to have authorship
comments adjusted too.
Signed-off-by: Casey Connolly <[email protected]>
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Introducing documentation support for Qualcomm Dragonwing IQ8 QCS8300
board. Documents the build and flashing steps.
Signed-off-by: Balaji Selvanathan <[email protected]>
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The mkmbn tool isn't available yet, so it's still necessary to use
qtestsign for signing.
Update the docs to describe it, this can be reverted once mkmbn and the
associated tooling is merged.
Link: https://lore.kernel.org/u-boot/[email protected]
Signed-off-by: Casey Connolly <[email protected]>
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As required e.g. on Fairphone 5, add an example how to use boot image
with header version 2.
Signed-off-by: Luca Weiss <[email protected]>
Reviewed-by: Casey Connolly <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Casey Connolly <[email protected]>
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This command does not work as described in this doc, so replace it with
a regular make with qcom_defconfig, as already used for other
defconfigs.
Signed-off-by: Luca Weiss <[email protected]>
Reviewed-by: Casey Connolly <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Casey Connolly <[email protected]>
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One needs to set CROSS_COMPILE also for the actual compilation, not just
for the kconfig step, otherwise the host arch compiler would be used.
Signed-off-by: Luca Weiss <[email protected]>
Reviewed-by: Casey Connolly <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Casey Connolly <[email protected]>
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Introducing documentation support for Qualcomm Dragonwing series
boards. Documents the build and flashing steps.
Signed-off-by: Balaji Selvanathan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
[Casey: add dragonwing to board/qualcomm/index.rst]
Signed-off-by: Casey Connolly <[email protected]>
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IPQ5424 expects U-Boot to have MBN version 7 header. The qtestsign tool
presently documented doesn't support v7. Hence update the instructions
to use a different tool that can support both v6 and v7.
Signed-off-by: Varadarajan Narayanan <[email protected]>
Reviewed-by: Casey Connolly <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Casey Connolly <[email protected]>
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Add some documentation which attempts to describe Qualcomm smartphone
support with the qcom-phone.config fragment, as well as a high level
debugging guide for diagnosing U-Boot issues when UART and framebuffer
are unavailable.
Reviewed-by: Simon Glass <[email protected]>
Tested-by: Danila Tikhonov <[email protected]> # google-sunfish
Tested-by: Jens Reidel <[email protected]> # xiaomi-davinci
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Caleb Connolly <[email protected]>
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Introducing basic support for Qualcomm IPQxxx based RDPs.
Document the build and flashing steps.
Reviewed-by: Caleb Connolly <[email protected]>
Signed-off-by: Varadarajan Narayanan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Caleb Connolly <[email protected]>
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The process here is almost identical to the Dragonboard 410c, we've come
full circle!
Reviewed-by: Simon Glass <[email protected]>
Signed-off-by: Caleb Connolly <[email protected]>
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The MSM8916/APQ8016 Technical Reference Manual is publicly available and
contains a lot of useful register maps for many core parts of the SoC.
Include an archive.org link to it in the dragonboard410c documentation.
Reviewed-by: Neil Armstrong <[email protected]>
Reviewed-by: Sumit Garg <[email protected]>
Signed-off-by: Caleb Connolly <[email protected]>
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Replace the board specific docs with a generic board.rst file which
documents the build/boot process for the sdm845 and qcs404 boards now
that the only differences are the DTB in use.
At the same time, create a debugging page to document some useful
snippets and tips for working with Qualcomm platforms.
Reviewed-by: Neil Armstrong <[email protected]>
Reviewed-by: Sumit Garg <[email protected]>
Signed-off-by: Caleb Connolly <[email protected]>
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Title underlines should match the length of the title. Unfortunately
docutils only catches underlines that are too short.
Add some missing empty lines after titles.
Signed-off-by: Heinrich Schuchardt <[email protected]>
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Signed-off-by: Sumit Garg <[email protected]>
Use code-block. Fix length of two heading underlines.
Signed-off-by: Heinrich Schuchardt <[email protected]>
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The current documentation for Snapdragon based Samsung
and Qualcomm boards is vague in the sense that at one place
it mentions that u-boot can be used as a replacement for ABL
bootloader and at another it mentions that u-boot is loaded
as an Android boot image through ABL.
Fix the same.
Signed-off-by: Bhupesh Sharma <[email protected]>
Reviewed-by: Sumit Garg <[email protected]>
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Add support for Qualcomm QCS404 SoC based evaluation board.
Features:
- Qualcomm Snapdragon QCS404 SoC
- 1GiB RAM
- 8GiB eMMC, uSD slot
U-boot is chain loaded by ABL in 64-bit mode as part of boot.img.
For detailed build and boot instructions, refer to
doc/board/qualcomm/qcs404.rst.
Signed-off-by: Sumit Garg <[email protected]>
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Add support for 96Boards Dragonboard 845C aka Robotics RB3 development
platform. This board complies with 96Boards Open Platform Specifications.
Features:
- Qualcomm Snapdragon SDA845 SoC
- 4GiB RAM
- 64GiB UFS drive
U-boot is chain loaded by ABL in 64-bit mode as part of boot.img.
For detailed build and boot instructions, refer to
doc/board/qualcomm/sdm845.rst, board: dragonboard845c.
Signed-off-by: Sumit Garg <[email protected]>
Reviewed-by: Ramon Fried <[email protected]>
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U-boot is intended to replace linux kernel in android boot image(ABL), and
it's FIT payload to replace initramfs file. The boot process is similar to
boot image with linux:
- android bootloader (ABL) unpacks android boot image
- ABL sets `linux,initrd-start property` in chosen node in unpacked FDT
- ABL sets x0 register to FDT address, and passes control to u-boot
- u-boot reads x0 register, and stores it in `prevbl_fdt_addr` env variable
- u-boot reads `linux,initrd-start` property,
and stores it in `prevbl_initrd_start_addr`
In this way, u-boot bootcmd relies on `prevbl_initrd_start_addr` env
variable, and boils down to `bootm $prevbl_initrd_start_addr`.
If more control on boot process is desired, pack a boot script in
FIT image, and put it to default configuration
What done:
- strip unneeded config options
- add FIT image support
- add framebuffer node, u-boot logo and video console
- increase LMB_MAX_REGIONS, to store all linux dtb reserved memory regions
- add linux kernel image header
Uart driver causes hang, when u-boot is used in android boot image instead
of linux. Temporary disable console driver, until investigated and fixed.
Signed-off-by: Dzmitry Sankouski <[email protected]>
Cc: Ramon Fried <[email protected]>
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Samsung S9 SM-G9600 - Snapdragon SDM845 version of the phone,
for China \ Hong Kong markets.
Has unlockable bootloader, unlike SM-G960U (American market version),
which allows running u-boot as a chain-loaded bootloader.
Signed-off-by: Dzmitry Sankouski <[email protected]>
Cc: Ramon Fried <[email protected]>
Cc: Tom Rini <[email protected]>
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At the moment the U-Boot port for the DragonBoard 410c is designed
to be loaded as an Android boot image after Qualcomm's Little Kernel (LK)
bootloader. This is simple to set up but LK is redundant in this case,
since everything done by LK can be also done directly by U-Boot.
Dropping LK entirely has at least the following advantages:
- Easier installation/board code (no need for Android boot images)
- (Slightly) faster boot
- Boot directly in 64-bit without a round trip to 32-bit for LK
So far this was not possible yet because of unsolved problems:
1. Signing tool: The firmware expects a "signed" ELF image with extra
(Qualcomm-specific) ELF headers, usually used for secure boot.
The DragonBoard 410c does not have secure boot by default but the
extra ELF headers are still required.
2. PSCI bug: There seems to be a bug in the PSCI implementation
(part of the TrustZone/tz firmware) that causes all other CPU cores
to be started in 32-bit mode if LK is missing in the boot chain.
This causes Linux to hang early during boot.
There is a solution for both problems now:
1. qtestsign (https://github.com/msm8916-mainline/qtestsign)
can be used as a "signing" tool for U-Boot and other firmware.
2. A workaround for the "PSCI bug" is to execute the TZ syscall when
entering U-Boot. That way PSCI is made aware of the 64-bit switch
and starts all other CPU cores in 64-bit mode as well.
Simplify the dragonboard410c board by removing all the extra code that
is only used to build an Android boot image that can be loaded by LK.
This allows dropping the custom linker script, special image magic,
as well as most of the special build/installation instructions.
CONFIG_REMAKE_ELF is used to build a new ELF image that has both U-Boot
and the appended DTB combined. The resulting u-boot.elf can then be
passed to the "signing" tool (e.g. qtestsign).
The PSCI workaround is placed in the "boot0" hook that is enabled
with CONFIG_ENABLE_ARM_SOC_BOOT0_HOOK. The extra check for EL1 allows
compatibility with custom firmware that enters U-Boot in EL2 or EL3,
e.g. qhypstub (https://github.com/msm8916-mainline/qhypstub).
As a first step these changes apply only to DragonBoard410c.
Similar changes could likely also work for the DragonBoard 820c.
Note that removing LK wouldn't be possible that easily without a lot of
work already done three years ago by Ramon Fried. A lot of missing
initialization, pinctrl etc was already added back then even though
it was not strictly needed yet.
Cc: Ramon Fried <[email protected]>
Signed-off-by: Stephan Gerhold <[email protected]>
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