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From: Caleb Connolly <caleb.connolly@linaro.org>
Subject: [PATCH v3 00/36] Qualcomm generic board support
Date: Tue, 30 Jan 2024 14:04:48 +0000
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To: Neil Armstrong <neil.armstrong@linaro.org>,
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Dzmitry Sankouski <dsankouski@gmail.com>,
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Jaehoon Chung <jh80.chung@samsung.com>,
Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com>,
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Jorge Ramirez-Ortiz <jorge.ramirez.ortiz@gmail.com>,
Stephan Gerhold <stephan@gerhold.net>
Cc: Marek Vasut <marex@denx.de>, u-boot@lists.denx.de,
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| Series |
Qualcomm generic board support
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Historically, Qualcomm boards in U-Boot have all had their own board/qualcomm/xyz directory, their own CONFIG_TARGET_XYZ option, their own hardcoded sysmap-xyz.c file, and their own U-Boot specific devicetree with little/no compatibility with upstream DT. This series makes a few final prepatory changes, and then replaces almost all of the board specific code with generic alternatives. The end result is that all Qualcomm boards both current and future (with the exception of the db410c and db820c) can be supported by a single U-Boot binary by just providing the correct DT. New boards can be added without introducing any addition mach/ or board/ code or config options. Due to the nature of this change, the patch ("mach-snapdragon: generalise board support") has become pretty big, I tried a few different ways to represent this in git history, but the other methods (e.g. adding a stub "generic" target and removing it again) were more confusing and made for much messier git history. The current patch is mostly atomic, but requires regenerating the config. The QCS404 EVB board had some code to enable the USB VBUS regulator, this is dropped in favour of a adding a new vbus-supply property to the dwc3-generic driver. This will also be used by the dragonboard845c in a future patch. This handles the common case of a board requiring some regulator be enabled for USB host mode. A more detailed description of the changes is below. == Memory map == The memory map was historically hardcoded into U-Boot, this meant that U-Boot had to be built for a specific variant of a device. This is changed to instead read the memory map from the DT /memory node. Additionally, most boards mapped addresss 0x0 as valid, as a result if a null pointer access happens then it will cause a bus stall (and board hang). This is fixed so that null pointer accesses will now correctly throw an exception. == DT loading == Previously, boards used the FDT blob embedded into U-Boot (via OF_SEPARATE). However, most Qualcomm boards run U-Boot as a secondary bootloader, so we can instead rely on the first-stage bootloader to populate some useful FDT properties for us (notably the /memory node and KASLR seed) and fetch the DTB that it provides. Combined with the memory map changes above, this let's us entirely avoid configuring the memory map explicitly. == defconfig == Most of the board defconfigs and config headers were quite similar, to simplify maintenance going forward, all the fully generic boards (sdm845 and qcs404-evb so far) are adapted to use the new qcom_defconfig. Going forward, all new Qualcomm boards should be supported by this defconfig. A notable exception is for specific usecases (like U-Boot as the primary bootloader). == The older dragonboards == The db410c and db820c both have some custom board init code, as a result they aren't yet binary compatible. mach-snapdragon is adjusted so that all the necessary config options (e.g. CONFIG_SYS_BOARD) can be set from their defconfigs, this makes it possible to enable support for new boards without introducing additional config options. The db410c can run U-Boot either chainloaded like the other boards, or as a first-stage bootloader replacing aboot. However it was hardcoded to only build for the latter option. This series introduces a new "chainloaded" defconfig to enable easier testing via fastboot. == dynamic environment variables == This series also introduces runtime-allocated load addresses via the lmb allocator. This allows for booting on boards with vastly different memory layouts without any pre-calculation or macro magic in the config header. This feature is based on similar code in mach-apple. The soc, board, and fdtfile environment variables are also generated automatically. Many Qualcomm boards follow a similar scheme for DTB naming such that the name can often be derived from the root compatible properties. This is intended to cover the most common cases and be a simple solution for booting generic distro images without having to explicitly choose the right DTB. The U-Boot DTS can be tweaked if necessary to produce the correct name, the variable can be overwritten, or a bootloader like GRUB can load the devicetree instead. == Upstream DT == All Qualcomm boards have had their devicetree files replaced with the upstream versions. Previous patch series made the necessary driver adjustments to fully support the upstream DT format. All future Qualcomm boards should use upstream DTS by default. Once Sumit's work to import dt-rebasing has been merged, we will drop the imported DT and bindings again. --- I have tested this series on the Dragonboard410c, Dragonboard820c, and Dragonboard845c. I unfortunately don't have access to a QCS404 EVB board to test. This series is based on the qcom-next branch [1] and depends on my PMIC fixes series [2], an integration branch for testing can be found at [3]. The non-qualcomm-specific changes (patches 1 and 2) don't have any dependencies. [1]: https://source.denx.de/u-boot/custodians/u-boot-snapdragon [2]: https://lore.kernel.org/u-boot/20231114-b4-qcom-dt-compat-v3-0-88a92f8f00ba@linaro.org/ [3]: https://source.denx.de/u-boot/custodians/u-boot-snapdragon/-/tree/b4/qcom-common-target --- Changes in v3: - Remove dragonboard410c.dts file - Introduce generic board_usb_init() function. - Remove db410c specific dead code (smem RAM layout) - Fix pinctrl DT compatibility for msm8916/msm8996 - Reference git tag where DT and headers were taken from Linux. - Adjust ramdisk allocation size to 128M - Improve documentation wording, reference buildman - Fix mapping for reserved regions to avoid speculative pre-fetching - Apply quicksort to memory banks read from DT to ensure ordering - Link to v2: https://lore.kernel.org/r/20231219-b4-qcom-common-target-v2-0-b6dd9704219e@linaro.org Changes in v2: - Split DTS changes to reduce patch size. - Import full board DTS files from Linux too, and introduce -u-boot.dtsi files where necessary to make any U-Boot specific changes. - Add a pinctrl driver for qcom PMIC GPIOs - Always enable LINUX_KERNEL_IMAGE_HEADER - Link to v1: https://lore.kernel.org/r/20231121-b4-qcom-common-target-v1-0-9492198e0c15@linaro.org To: Neil Armstrong <neil.armstrong@linaro.org> To: Sumit Garg <sumit.garg@linaro.org> To: Ramon Fried <rfried.dev@gmail.com> Cc: Marek Vasut <marex@denx.de> To: Dzmitry Sankouski <dsankouski@gmail.com> To: Caleb Connolly <caleb.connolly@linaro.org> To: Peng Fan <peng.fan@nxp.com> To: Jaehoon Chung <jh80.chung@samsung.com> To: Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com> To: Lukasz Majewski <lukma@denx.de> To: Sean Anderson <seanga2@gmail.com> To: Jorge Ramirez-Ortiz <jorge.ramirez.ortiz@gmail.com> To: Stephan Gerhold <stephan@gerhold.net> Cc: <u-boot@lists.denx.de> --- Caleb Connolly (36): arm: init: export prev_bl_fdt_addr usb: dwc3-generic: support external vbus regulator mmc: msm_sdhci: use modern clock handling dt-bindings: drop msm_sdhci binding clk/qcom: use upstream compatible properties clock/qcom: qcs404: fix clk_set_rate serial: msm: add debug UART serial: msm: fix clock handling serial_msm: fix pinctrl gpio: qcom_pmic: 1-based GPIOs gpio: qcom_pmic: add a quirk to skip GPIO configuration gpio: qcom_pmic: add pinctrl driver board: dragonboard410c: add chainloaded config fragment board: dragonboard410c: upstream DT compat board: dragonboard410c: import board code from mach-snapdragon board: dragonboard820c: use LINUX_KERNEL_IMAGE_HEADER mach-snapdragon: generalise board support mach-snapdragon: dynamic load addresses mach-snapdragon: generate fdtfile automatically mach-snapdragon: carve out no-map regions doc: board/qualcomm: document generic targets dt-bindings: import headers for SDM845 dts: sdm845: import supporting dtsi files dts: sdm845: replace with upstream DTS dt-bindings: import headers for MSM8916 dts: msm8916: import PMIC dtsi files dts: msm8916: replace with upstream DTS dt-bindings: import headers for MSM8996 dts: msm8996: import PMIC dtsi files dts: dragonboard820c: use correct bindings for clocks dts: msm8996: replace with upstream DTS dt-bindings: import headers for qcs404 dts: qcs404-evb: replace with upstream DT board: qcs404-evb: drop board code pinctrl: qcom: fix DT compatibility MAINTAINERS: Qualcomm: add some missing paths MAINTAINERS | 12 +- abort | 20 + arch/arm/Kconfig | 4 + arch/arm/dts/Makefile | 9 +- arch/arm/dts/apq8016-sbc-u-boot.dtsi | 11 + arch/arm/dts/apq8016-sbc.dts | 729 +++ arch/arm/dts/apq8096-db820c-u-boot.dtsi | 14 + arch/arm/dts/apq8096-db820c.dts | 1137 ++++ arch/arm/dts/dragonboard410c-uboot.dtsi | 44 - arch/arm/dts/dragonboard410c.dts | 209 - arch/arm/dts/dragonboard820c-uboot.dtsi | 32 - arch/arm/dts/dragonboard820c.dts | 151 - arch/arm/dts/dragonboard845c-uboot.dtsi | 26 - arch/arm/dts/dragonboard845c.dts | 48 - arch/arm/dts/msm8916-pm8916.dtsi | 157 + arch/arm/dts/msm8916.dtsi | 2702 +++++++++ arch/arm/dts/msm8996.dtsi | 3884 +++++++++++++ arch/arm/dts/pm8916.dtsi | 178 + arch/arm/dts/pm8994.dtsi | 152 + arch/arm/dts/pm8998.dtsi | 130 + arch/arm/dts/pmi8994.dtsi | 65 + arch/arm/dts/pmi8998.dtsi | 98 + arch/arm/dts/pms405.dtsi | 149 + arch/arm/dts/qcs404-evb-4000-u-boot.dtsi | 26 + arch/arm/dts/qcs404-evb-4000.dts | 96 + arch/arm/dts/qcs404-evb-uboot.dtsi | 30 - arch/arm/dts/qcs404-evb.dts | 390 -- arch/arm/dts/qcs404-evb.dtsi | 389 ++ arch/arm/dts/qcs404.dtsi | 1829 ++++++ arch/arm/dts/sdm845-db845c.dts | 1190 ++++ .../arm/dts/sdm845-samsung-starqltechn-u-boot.dtsi | 16 + arch/arm/dts/sdm845-samsung-starqltechn.dts | 460 ++ arch/arm/dts/sdm845-wcd9340.dtsi | 86 + arch/arm/dts/sdm845.dtsi | 5801 +++++++++++++++++++- arch/arm/dts/starqltechn-uboot.dtsi | 27 - arch/arm/dts/starqltechn.dts | 68 - arch/arm/lib/save_prev_bl_data.c | 5 + arch/arm/mach-snapdragon/Kconfig | 95 +- arch/arm/mach-snapdragon/Makefile | 8 +- arch/arm/mach-snapdragon/board.c | 454 ++ arch/arm/mach-snapdragon/dram.c | 99 - arch/arm/mach-snapdragon/include/mach/dram.h | 12 - arch/arm/mach-snapdragon/include/mach/misc.h | 13 - arch/arm/mach-snapdragon/init_sdm845.c | 73 - arch/arm/mach-snapdragon/misc.c | 55 - arch/arm/mach-snapdragon/sysmap-apq8016.c | 31 - arch/arm/mach-snapdragon/sysmap-apq8096.c | 31 - arch/arm/mach-snapdragon/sysmap-qcs404.c | 43 - arch/arm/mach-snapdragon/sysmap-sdm845.c | 31 - board/qualcomm/dragonboard410c/Kconfig | 15 - board/qualcomm/dragonboard410c/Makefile | 2 +- .../dragonboard410c/configs/chainloaded.config | 7 + board/qualcomm/dragonboard410c/dragonboard410c.c | 130 +- board/qualcomm/dragonboard820c/Kconfig | 15 - board/qualcomm/dragonboard820c/Makefile | 1 - board/qualcomm/dragonboard820c/dragonboard820c.c | 39 +- board/qualcomm/dragonboard820c/head.S | 33 - board/qualcomm/dragonboard820c/u-boot.lds | 111 - board/qualcomm/dragonboard845c/Kconfig | 12 - board/qualcomm/qcs404-evb/Kconfig | 15 - board/qualcomm/qcs404-evb/Makefile | 6 - board/qualcomm/qcs404-evb/qcs404-evb.c | 62 - configs/dragonboard410c_defconfig | 8 +- configs/dragonboard820c_defconfig | 8 +- configs/dragonboard845c_defconfig | 29 - configs/qcom_defconfig | 73 + configs/qcs404evb_defconfig | 55 - configs/starqltechn_defconfig | 41 - doc/board/qualcomm/board.rst | 125 + doc/board/qualcomm/debugging.rst | 61 + doc/board/qualcomm/index.rst | 4 +- doc/board/qualcomm/qcs404.rst | 79 - doc/board/qualcomm/sdm845.rst | 167 - doc/device-tree-bindings/mmc/msm_sdhci.txt | 25 - doc/device-tree-bindings/usb/ehci-msm.txt | 10 - drivers/clk/qcom/clock-apq8016.c | 9 +- drivers/clk/qcom/clock-apq8096.c | 7 +- drivers/clk/qcom/clock-qcs404.c | 7 +- drivers/gpio/qcom_pmic_gpio.c | 224 +- drivers/mmc/msm_sdhci.c | 69 +- drivers/phy/qcom/msm8916-usbh-phy.c | 4 +- drivers/pinctrl/qcom/pinctrl-apq8016.c | 28 +- drivers/pinctrl/qcom/pinctrl-apq8096.c | 16 +- drivers/pinctrl/qcom/pinctrl-qcs404.c | 16 +- drivers/serial/Kconfig | 8 + drivers/serial/serial_msm.c | 57 +- drivers/usb/dwc3/dwc3-generic.c | 12 + drivers/usb/host/ehci-msm.c | 24 +- include/configs/dragonboard845c.h | 20 - include/configs/qcom.h | 21 + include/configs/qcs404-evb.h | 20 - include/configs/sdm845.h | 26 - include/dt-bindings/arm/coresight-cti-dt.h | 37 + include/dt-bindings/clock/qcom,camcc-sdm845.h | 116 + include/dt-bindings/clock/qcom,dispcc-sdm845.h | 56 + include/dt-bindings/clock/qcom,gcc-msm8916.h | 179 + include/dt-bindings/clock/qcom,gcc-msm8996.h | 362 ++ include/dt-bindings/clock/qcom,gpucc-sdm845.h | 24 + include/dt-bindings/clock/qcom,lpass-sdm845.h | 15 + include/dt-bindings/clock/qcom,mmcc-msm8996.h | 295 + include/dt-bindings/clock/qcom,rpmcc.h | 174 + include/dt-bindings/clock/qcom,rpmh.h | 37 + include/dt-bindings/clock/qcom,turingcc-qcs404.h | 15 + include/dt-bindings/clock/qcom,videocc-sdm845.h | 35 + include/dt-bindings/dma/qcom-gpi.h | 11 + include/dt-bindings/firmware/qcom,scm.h | 39 + include/dt-bindings/iio/qcom,spmi-vadc.h | 300 + include/dt-bindings/interconnect/qcom,msm8916.h | 100 + .../dt-bindings/interconnect/qcom,msm8996-cbf.h | 12 + include/dt-bindings/interconnect/qcom,msm8996.h | 163 + include/dt-bindings/interconnect/qcom,osm-l3.h | 15 + include/dt-bindings/interconnect/qcom,sdm845.h | 150 + include/dt-bindings/phy/phy-qcom-qmp.h | 20 + include/dt-bindings/phy/phy-qcom-qusb2.h | 37 + include/dt-bindings/pinctrl/qcom,pmic-gpio.h | 164 + include/dt-bindings/pinctrl/qcom,pmic-mpp.h | 106 + include/dt-bindings/power/qcom-rpmpd.h | 412 ++ .../dt-bindings/regulator/qcom,rpmh-regulator.h | 36 + include/dt-bindings/reset/qcom,gcc-msm8916.h | 100 + include/dt-bindings/reset/qcom,sdm845-aoss.h | 17 + include/dt-bindings/reset/qcom,sdm845-pdc.h | 22 + include/dt-bindings/soc/qcom,apr.h | 28 + include/dt-bindings/soc/qcom,rpmh-rsc.h | 14 + include/dt-bindings/sound/apq8016-lpass.h | 9 + include/dt-bindings/sound/qcom,lpass.h | 46 + include/dt-bindings/sound/qcom,q6afe.h | 9 + include/dt-bindings/sound/qcom,q6asm.h | 26 + include/dt-bindings/sound/qcom,q6dsp-lpass-ports.h | 234 + include/dt-bindings/sound/qcom,wcd9335.h | 15 + include/init.h | 11 + 130 files changed, 23881 insertions(+), 2580 deletions(-) --- base-commit: 4c3dfa1b8babf9fc0575ce08eed99f950d3bab84 // Caleb (they/them)