On Wed, 23 Jul 2025 at 23:40, Stefan Monnier <[email protected]> wrote: > > [ AFAICT this mailing-list is used for development of U-Boot more than > for users of U-Boot. I s there a more appropriate mailing-list, for > users? ] > > I'm building the bootloader for two different SBCs, both based on rk3568 > (NanoPi R5S and Odroid-M1), and using the default config for those boards > I can easily make a bootloader that successfully loads my Debian > installation, but sadly it's all "blind" until the Linux kernel > initializes the display. > > I saw that the default config does not include support for the HDMI > output, so I figured it would be easy to fix but I still haven't managed > to get any visual. > > I made the following changes: > > - Set CONFIG_BOOTDELAY to 10, to minimize the risk that my monitor > sleeps through it all. > - I enabled: CONFIG_USB_KEYBOARD, CONFIG_VIDEO, CONFIG_VIDEO_ROCKCHIP, > CONFIG_DISPLAY_ROCKCHIP_HDMI, CONFIG_DISPLAY, and CONFIG_VIDEO_DT_SIMPLEFB. > > but still, nothing shows up on my screen until the Linux kernel > configures the display (and pressing a key on the keyboard doesn't seem > to prevent autobooting). > > What am I missing?
Support for the rk35xx isn't upstream yet, this patch series is likely a good start: https://lists.denx.de/pipermail/u-boot/2025-June/591737.html > Stefan > > > --- .config.ORIG 2025-07-23 20:27:50.725403359 +0000 > +++ .config 2025-07-23 21:12:52.281271378 +0000 > @@ -464,6 +464,7 @@ > CONFIG_BOOTSTD_FULL=y > CONFIG_BOOTSTD_DEFAULTS=y > CONFIG_BOOTSTD_BOOTCOMMAND=y > +CONFIG_BOOTSTD_MENU=y > CONFIG_BOOTMETH_GLOBAL=y > # CONFIG_BOOTMETH_ANDROID is not set > # CONFIG_BOOTMETH_CROS is not set > @@ -480,6 +481,7 @@ > # CONFIG_BOOTMETH_VBE_ABREC is not set > CONFIG_BOOTMETH_VBE_SIMPLE_OS=y > # CONFIG_SPL_BOOTMETH_VBE_SIMPLE is not set > +CONFIG_EXPO=y > # CONFIG_BOOTMETH_RAUC is not set > CONFIG_BOOTMETH_SCRIPT=y > # CONFIG_UPL is not set > @@ -512,7 +514,7 @@ > # Autoboot options > # > CONFIG_AUTOBOOT=y > -CONFIG_BOOTDELAY=2 > +CONFIG_BOOTDELAY=10 > # CONFIG_AUTOBOOT_KEYED is not set > # CONFIG_AUTOBOOT_USE_MENUKEY is not set > # CONFIG_BOOT_RETRY is not set > @@ -531,6 +533,7 @@ > # CONFIG_OF_SYSTEM_SETUP is not set > # CONFIG_OF_STDOUT_VIA_ALIAS is not set > # CONFIG_FDT_FIXUP_PARTITIONS is not set > +# CONFIG_FDT_SIMPLEFB is not set > CONFIG_ARCH_FIXUP_FDT_MEMORY=y > # CONFIG_USE_BOOTARGS is not set > # CONFIG_BOOTARGS_SUBST is not set > @@ -544,6 +547,7 @@ > # > # Configuration editor > # > +# CONFIG_CEDIT is not set > > # > # Console > @@ -565,7 +569,7 @@ > # CONFIG_SYS_CONSOLE_IS_IN_ENV is not set > # CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE is not set > # CONFIG_SYS_CONSOLE_INFO_QUIET is not set > -# CONFIG_SYS_STDIO_DEREGISTER is not set > +CONFIG_SYS_STDIO_DEREGISTER=y > # CONFIG_SPL_SYS_STDIO_DEREGISTER is not set > # CONFIG_SYS_DEVICE_NULLDEV is not set > > @@ -945,6 +949,7 @@ > # Misc commands > # > # CONFIG_CMD_2048 is not set > +# CONFIG_CMD_BMP is not set > # CONFIG_CMD_BSP is not set > CONFIG_CMD_BLOCK_CACHE=y > # CONFIG_CMD_CACHE is not set > @@ -967,6 +972,8 @@ > # CONFIG_CMD_PSTORE is not set > # CONFIG_CMD_TERMINAL is not set > # CONFIG_CMD_UUID is not set > +CONFIG_CMD_VIDCONSOLE=y > +# CONFIG_CMD_SELECT_FONT is not set > > # > # TI specific command line interface > @@ -1368,9 +1375,12 @@ > # CONFIG_I2C_MUX is not set > CONFIG_INPUT=y > # CONFIG_SPL_INPUT is not set > -# CONFIG_DM_KEYBOARD is not set > +CONFIG_DM_KEYBOARD=y > # CONFIG_SPL_DM_KEYBOARD is not set > +# CONFIG_APPLE_SPI_KEYB is not set > +# CONFIG_BUTTON_KEYBOARD is not set > # CONFIG_CROS_EC_KEYB is not set > +# CONFIG_I8042_KEYB is not set > # CONFIG_TWL4030_INPUT is not set > > # > @@ -2138,9 +2148,13 @@ > # USB peripherals > # > CONFIG_USB_STORAGE=y > -# CONFIG_USB_KEYBOARD is not set > +CONFIG_USB_KEYBOARD=y > # CONFIG_USB_ONBOARD_HUB is not set > CONFIG_USB_HUB_DEBOUNCE_TIMEOUT=1000 > +CONFIG_USB_KEYBOARD_FN_KEYS=y > +CONFIG_SYS_USB_EVENT_POLL=y > +# CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE is not set > +# CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP is not set > # CONFIG_USB_HOST_ETHER is not set > # CONFIG_USB_GADGET is not set > # CONFIG_SPL_USB_GADGET is not set > @@ -2153,7 +2167,105 @@ > # > # Graphics support > # > -# CONFIG_VIDEO is not set > +CONFIG_VIDEO=y > +# CONFIG_VIDEO_FONT_4X6 is not set > +CONFIG_VIDEO_FONT_8X16=y > +# CONFIG_VIDEO_FONT_SUN12X22 is not set > +# CONFIG_VIDEO_FONT_16X32 is not set > +CONFIG_VIDEO_LOGO=y > +CONFIG_BACKLIGHT=y > +CONFIG_VIDEO_PCI_DEFAULT_FB_SIZE=0x0 > +# CONFIG_VIDEO_COPY is not set > +CONFIG_VIDEO_DAMAGE=y > +CONFIG_BACKLIGHT_PWM=y > +# CONFIG_BACKLIGHT_GPIO is not set > +CONFIG_VIDEO_BPP8=y > +CONFIG_VIDEO_BPP16=y > +CONFIG_VIDEO_BPP32=y > +CONFIG_VIDEO_ANSI=y > +# CONFIG_VIDEO_MIPI_DSI is not set > +CONFIG_CONSOLE_NORMAL=y > +# CONFIG_CONSOLE_ROTATION is not set > +# CONFIG_CONSOLE_TRUETYPE is not set > +CONFIG_SYS_WHITE_ON_BLACK=y > +# CONFIG_NO_FB_CLEAR is not set > +CONFIG_VIDEO_SYNC_MS=100 > +CONFIG_PANEL=y > +CONFIG_SIMPLE_PANEL=y > +# CONFIG_PANEL_HX8238D is not set > + > +# > +# TrueType Fonts > +# > +# CONFIG_VIDEO_BOCHS is not set > +# CONFIG_VIDEO_VESA is not set > +# CONFIG_VIDEO_LCD_ANX9804 is not set > +# CONFIG_ATMEL_LCD_BGR555 is not set > +# CONFIG_VIDEO_BCM2835 is not set > +# CONFIG_VIDEO_LCD_ENDEAVORU is not set > +# CONFIG_VIDEO_LCD_HIMAX_HX8394 is not set > +# CONFIG_VIDEO_LCD_MOT is not set > +# CONFIG_VIDEO_LCD_NOVATEK_NT35510 is not set > +# CONFIG_VIDEO_LCD_ORISETECH_OTM8009A is not set > +# CONFIG_VIDEO_LCD_LG_LD070WX3 is not set > +# CONFIG_VIDEO_LCD_LG_LH400WV3 is not set > +# CONFIG_VIDEO_LCD_RAYDIUM_RM68200 is not set > +# CONFIG_VIDEO_LCD_RENESAS_R61307 is not set > +# CONFIG_VIDEO_LCD_RENESAS_R69328 is not set > +# CONFIG_VIDEO_LCD_SAMSUNG_LTL106HL02 is not set > +# CONFIG_VIDEO_LCD_SHARP_LQ079L1SX01 is not set > +# CONFIG_VIDEO_LCD_SHARP_LQ101R1SX01 is not set > +# CONFIG_VIDEO_LCD_SSD2828 is not set > +# CONFIG_VIDEO_LCD_TDO_TL070WSH30 is not set > +# CONFIG_VIDEO_LCD_HITACHI_TX10D07VM0BAA is not set > +# CONFIG_VIDEO_LCD_HITACHI_TX18D42VM is not set > +# CONFIG_VIDEO_MESON is not set > +# CONFIG_VIDEO_MVEBU is not set > +CONFIG_I2C_EDID=y > +# CONFIG_I2C_EDID_STANDARD is not set > +CONFIG_DISPLAY=y > +# CONFIG_NXP_TDA19988 is not set > +# CONFIG_ATMEL_HLCD is not set > +# CONFIG_BACKLIGHT_AAT2870 is not set > +# CONFIG_BACKLIGHT_LM3532 is not set > +# CONFIG_BACKLIGHT_LM3533 is not set > +# CONFIG_BACKLIGHT_LP855x is not set > +# CONFIG_AM335X_LCD is not set > +# CONFIG_VIDEO_EXYNOS is not set > +# CONFIG_LOGICORE_DP_TX is not set > +CONFIG_VIDEO_ROCKCHIP=y > +CONFIG_VIDEO_ROCKCHIP_MAX_XRES=3840 > +CONFIG_VIDEO_ROCKCHIP_MAX_YRES=2160 > +# CONFIG_DISPLAY_ROCKCHIP_EDP is not set > +# CONFIG_DISPLAY_ROCKCHIP_LVDS is not set > +CONFIG_DISPLAY_ROCKCHIP_HDMI=y > +# CONFIG_DISPLAY_ROCKCHIP_MIPI is not set > +# CONFIG_DISPLAY_ROCKCHIP_DW_MIPI is not set > +# CONFIG_VIDEO_ARM_MALIDP is not set > +# CONFIG_VIDEO_STM32 is not set > +# CONFIG_VIDEO_TIDSS is not set > +# CONFIG_VIDEO_BRIDGE is not set > +# CONFIG_HOST1X_TEGRA is not set > +# CONFIG_VIDEO_TEGRA is not set > +# CONFIG_TEGRA_BACKLIGHT_PWM is not set > +# CONFIG_VIDEO_TEGRA124 is not set > +# CONFIG_IMX_LCDIF is not set > +# CONFIG_VIDEO_MXS is not set > +# CONFIG_VIDEO_SEPS525 is not set > +CONFIG_CONSOLE_SCROLL_LINES=1 > +CONFIG_VIDEO_DW_HDMI=y > +# CONFIG_VIDEO_SIMPLE is not set > +CONFIG_VIDEO_DT_SIMPLEFB=y > +# CONFIG_VIDEO_MCDE_SIMPLE is not set > +# CONFIG_OSD is not set > +# CONFIG_VIDEO_REMOVE is not set > +# CONFIG_SPLASH_SCREEN is not set > +# CONFIG_BMP is not set > +CONFIG_VIDEO_LOGO_MAX_SIZE=0x100000 > +CONFIG_VIDEO_BMP_RLE8=y > +# CONFIG_BMP_16BPP is not set > +# CONFIG_BMP_24BPP is not set > +# CONFIG_BMP_32BPP is not set > # CONFIG_SPL_VIDEO is not set >
