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| author | Dzmitry Sankouski <dsankouski@gmail.com> | 2022-02-22 21:49:53 +0300 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2022-04-04 15:06:11 -0400 |
| commit | f8a1b33889a2ed880062d9960a68718463093de6 (patch) | |
| tree | d89daf02652ac47bf9af42f0b296e051d093509c /arch/arm/dts | |
| parent | 12a3e1ada06c702c403cf1eebb063ef7a34688cd (diff) | |
board: starqltechn: get board usable - add bootcmd and docs
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>
Diffstat (limited to 'arch/arm/dts')
| -rw-r--r-- | arch/arm/dts/sdm845.dtsi | 6 | ||||
| -rw-r--r-- | arch/arm/dts/starqltechn-uboot.dtsi | 9 | ||||
| -rw-r--r-- | arch/arm/dts/starqltechn.dts | 13 |
3 files changed, 19 insertions, 9 deletions
diff --git a/arch/arm/dts/sdm845.dtsi b/arch/arm/dts/sdm845.dtsi index 1185b71216..6f2fb20d68 100644 --- a/arch/arm/dts/sdm845.dtsi +++ b/arch/arm/dts/sdm845.dtsi @@ -48,10 +48,8 @@ /* DEBUG UART */ qup_uart9: qup-uart9-default { - pinmux { - pins = "GPIO_4", "GPIO_5"; - function = "qup9"; - }; + pins = "GPIO_4", "GPIO_5"; + function = "gpio"; }; }; diff --git a/arch/arm/dts/starqltechn-uboot.dtsi b/arch/arm/dts/starqltechn-uboot.dtsi index d8d75e018a..b55cccfe14 100644 --- a/arch/arm/dts/starqltechn-uboot.dtsi +++ b/arch/arm/dts/starqltechn-uboot.dtsi @@ -8,15 +8,18 @@ / { + framebuffer@9D400000 { + u-boot,dm-pre-reloc; + }; soc { u-boot,dm-pre-reloc; + serial@a84000 { + u-boot,dm-pre-reloc; + }; gcc { clock-controller@100000 { u-boot,dm-pre-reloc; }; - serial@0xa84000 { - u-boot,dm-pre-reloc; - }; gpio_north@3900000 { u-boot,dm-pre-reloc; }; diff --git a/arch/arm/dts/starqltechn.dts b/arch/arm/dts/starqltechn.dts index 387420f30b..0261388319 100644 --- a/arch/arm/dts/starqltechn.dts +++ b/arch/arm/dts/starqltechn.dts @@ -34,9 +34,18 @@ method = "smc"; }; + framebuffer: framebuffer@9D400000 { + compatible = "simple-framebuffer"; + reg = <0 0x9D400000 0 (2960 * 1440 * 4)>;//2400000 + width = <1440>; + height = <2960>; + stride = <(1440 * 4)>; + format = "a8r8g8b8"; + }; + soc: soc { - serial@0xa84000 { - status = "ok"; + serial@a84000 { + status = "okay"; }; pinctrl@3900000 { |