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Diffstat (limited to 'board/qualcomm/dragonboard410c/readme.txt')
| -rw-r--r-- | board/qualcomm/dragonboard410c/readme.txt | 73 |
1 files changed, 5 insertions, 68 deletions
diff --git a/board/qualcomm/dragonboard410c/readme.txt b/board/qualcomm/dragonboard410c/readme.txt index a90d0f52e7..dfdb299fb7 100644 --- a/board/qualcomm/dragonboard410c/readme.txt +++ b/board/qualcomm/dragonboard410c/readme.txt @@ -1,69 +1,6 @@ -# SPDX-License-Identifier: GPL-2.0+ -# -# (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikowski@gmail.com> +Documentation for DragonBoard 410c is now located at: + doc/board/qualcomm/dragonboard410c.rst -Build & Run instructions: - -1) Install mkbootimg and dtbTool from - git://codeaurora.org/quic/kernel/skales (15ece94f09 worked for me) -2) Setup CROSS_COMPILE to aarch64 compiler -3) make dragonboard410c_config -4) make -5) generate fake, empty ramdisk (can have 0 bytes) -$ touch rd - -6) Generate qualcomm device tree table with dtbTool [1] -$ dtbTool -o dt.img arch/arm/dts - -7) Generate Android boot image with mkbootimg [2]: -$ mkbootimg --kernel=u-boot-dtb.bin --output=u-boot.img --dt=dt.img \ - --pagesize 2048 --base 0x80000000 --ramdisk=rd --cmdline="" - -8) Enter fastboot (reboot board with vol- button pressed) - -9) Boot it: -$ fastboot boot u-boot.img -or flash as kernel: -$ fastboot flash boot u-boot.img -$ fastboot reboot - - -What is working: -- UART -- GPIO (SoC) -- SD -- eMMC -- Reset -- USB in EHCI mode (usb starts does switch device->host, usb stop does the opposite) -- PMIC GPIOS (but not in generic subsystem) -- PMIC "special" buttons (power, vol-) - -What is not working / known bugs: -- SDHCI is slow (~2.5MiB/s for SD and eMMC) - -[1] To boot any kernel image, Little Kernel requires valid device tree for the -platform it runs on. dtbTool creates device tree table that Little Kernel scans. -Later on proper device tree is passed to next boot stage. -Full device tree is not required to boot u-boot. Enough would be: -/dts-v1/; - -/ { - model = "Qualcomm Technologies, Inc. Dragonboard 410c"; - compatible = "qcom,dragonboard", "qcom,apq8016-sbc"; - qcom,msm-id = <0xce 0x0 0xf8 0x0 0xf9 0x0 0xfa 0x0 0xf7 0x0>; - qcom,board-id = <0x10018 0x0>; - #address-cells = <0x2>; - #size-cells = <0x2>; - chosen { }; - aliases { }; - - memory { - device_type = "memory"; - reg = <0 0x80000000 0 0x3da00000>; - }; -}; - -but for simplicity (and because size of image is not that critical) we use -existing Qualcomm device trees. - -[2] Note that ramdisk is required, even if it is unused. +Note that the installation method has changed: U-Boot is now installed into the +"aboot" partition (replacing Little Kernel/LK). It is no longer packaged into +an Android boot image and loaded through Qualcomm's LK bootloader. |