initial buildroot for linux 5.15

2021-12-06 14:12:13 +08:00
parent d7767d594e
commit 7b6fc358fa
12736 changed files with 508822 additions and 0 deletions
@@ -0,0 +1,45 @@
+STM32F469 Discovery
+===================
+
+This tutorial describes how to use the predefined Buildroot
+configuration for the STM32F469 Discovery evaluation platform.
+
+Building
+--------
+
+  make stm32f469_disco_defconfig
+  make
+
+Flashing
+--------
+
+  ./board/stmicroelectronics/stm32f469-disco/flash.sh output/
+
+It will flash the U-boot bootloader.
+
+Creating SD card
+----------------
+
+Buildroot prepares an"sdcard.img" image in the output/images/ directory,
+ready to be dumped on a SD card. Launch the following command as root:
+
+  dd if=output/images/sdcard.img of=/dev/<your-sd-device>
+
+*** WARNING! This will destroy all the card content. Use with care! ***
+
+For details about the medium image layout and its content, see the
+definition in board/stmicroelectronics/stm32f469-disco/genimage.cfg.
+
+Framebuffer
+-----------
+After Linux boots, /dev/fb0 will be accessible. You can control the
+brightness of the display after enabling the framebuffer by running the
+following commands:
+
+   # echo 0 0 > /sys/class/graphics/fb0/pan
+   # echo 255 >/sys/class/backlight/40016c00.dsi.0/brightness
+
+The brightness ranges from 0 to 255, as you can see running the
+command:
+
+   # cat /sys/class/backlight/40016c00.dsi.0/max_brightness