c8ad46a1a7
This commit adds a defconfig for the STM32F429 platform, which is based on a Cortex-M4 core from ST Microelectronics. It is therefore the first noMMU ARM platform supported in Buildroot. This commit includes some files that will be common to several STM32 platforms (hence in board/stmicroelectronics) and some files that are specific to the STM32F429 (hence in board/stmicroelectronics/stm32f429-disco). More specifically, this commit adds: - A minimal Busybox configuration, which is small enough to boot without causing OOM on such small noMMU platforms. The resulting Busybox, statically linked with uClibc-ng, weights around 220 KB. For now, this file is located in board/stmicroelectronics/, but we might consider moving it to package/busybox/ in the future if needed. - A post-build script that removes the mounting of /dev/pts (not enabled in the kernel and not very useful for a system that has no network and no X), and removes the network related init script and configuration files (no network support). - A flash.sh script, to perform the right OpenOCD invocations to reflash the board. - One small kernel patch to adjust the kernel command line in the Device Tree, since it's the only way to do so. - The usual readme.txt file. Signed-off-by: Lee Jones <lee.jones@linaro.org> [Thomas: - squashed multiple patches from Lee Jones together - added the minimal Busybox configuration - added the post-build script - improved the flashing script to not hardcode the location of the output directory - add the small kernel patch - improve the readme.txt file - test on HW the resulting image, after using the internal toolchain.] Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Peter Korsgaard <peter@korsgaard.com> |
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| flash.sh | ||
| readme.txt | ||
STM32F429 Discovery =================== This tutorial describes how to use the predefined Buildroot configuration for the STM32F429 Discovery evaluation platform. Building -------- make stm32f429_disco_defconfig make Wire the UART ------------- Use a USB to TTL adapter, and connect: - RX to PA9 - TX to PA10 - GND to one of the GND available on the board The UART is configured at 115200. Flashing -------- ./board/stmicroelectronics/stm32f429-disco/flash.sh output/ It will flash the minimal bootloader, the Device Tree Blob, and the kernel image which includes the root filesystem as initramfs.