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f8a1b33889
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 <dsankouski@gmail.com> Cc: Ramon Fried <rfried.dev@gmail.com>
63 lines
1.0 KiB
Plaintext
63 lines
1.0 KiB
Plaintext
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Samsung S9 SM-G9600 (starqltechn) board device tree source
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*
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* (C) Copyright 2021 Dzmitry Sankouski <dsankouski@gmail.com>
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*
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*/
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/dts-v1/;
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#include "sdm845.dtsi"
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/ {
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model = "Samsung S9 (SM-G9600)";
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compatible = "qcom,sdm845-mtp", "qcom,sdm845", "qcom,mtp";
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#address-cells = <2>;
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#size-cells = <2>;
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chosen {
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stdout-path = "serial0:921600n8";
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};
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aliases {
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serial0 = &debug_uart;
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};
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memory {
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device_type = "memory";
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reg = <0 0x80000000 0 0xfe1bffff>;
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};
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psci {
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compatible = "arm,psci-1.0";
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method = "smc";
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};
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framebuffer: framebuffer@9D400000 {
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compatible = "simple-framebuffer";
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reg = <0 0x9D400000 0 (2960 * 1440 * 4)>;//2400000
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width = <1440>;
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height = <2960>;
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stride = <(1440 * 4)>;
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format = "a8r8g8b8";
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};
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soc: soc {
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serial@a84000 {
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status = "okay";
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};
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pinctrl@3900000 {
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muic_i2c: muic_i2c {
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pins = "GPIO_33", "GPIO_34";
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drive-strength = <0x2>;
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function = "gpio";
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bias-disable;
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};
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};
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};
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};
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#include "starqltechn-uboot.dtsi"
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