mirror of
https://gitlab.com/buildroot.org/buildroot.git
synced 2026-08-01 21:23:51 -09:00
f9cc5dbd45
This patch adds support for the HiFive Unmatched board. This includes building the firmware, kernel and rootFS for the HiFive Unmatched. The configuration is similar to the one for the HiFive Unleashed, this is why most of it is shared in board/sifive/common. Signed-off-by: Francois Dugast <francois.dugast.foss@gmail.com> [Julien: - add missing BR2_TARGET_UBOOT_NEEDS_GNUTLS=y - change linux.hash comment to take hash from upstream - change linux-headers.hash file to a symlink ] Signed-off-by: Julien Olivain <ju.o@free.fr>
101 lines
2.9 KiB
Plaintext
101 lines
2.9 KiB
Plaintext
SiFive HiFive Unmatched
|
|
=======================
|
|
|
|
This file describes how to use the pre-defined Buildroot
|
|
configuration for the SiFive HiFive Unmatched board.
|
|
|
|
Further information about the HiFive Unmatched board can be found
|
|
at https://www.sifive.com/boards/hifive-unmatched
|
|
|
|
Building
|
|
========
|
|
|
|
Configure Buildroot using the default board configuration:
|
|
|
|
$ make hifive_unmatched_defconfig
|
|
|
|
Customise the build as necessary:
|
|
|
|
$ make menuconfig
|
|
|
|
Start the build:
|
|
|
|
$ make
|
|
|
|
Result of the build
|
|
===================
|
|
|
|
Once the build has finished you will have the following files:
|
|
|
|
output/images/
|
|
+-- boot.scr
|
|
+-- fw_dynamic.bin
|
|
+-- fw_dynamic.elf
|
|
+-- fw_jump.bin
|
|
+-- fw_jump.elf
|
|
+-- hifive-unmatched-a00.dtb
|
|
+-- Image
|
|
+-- rootfs.cpio
|
|
+-- rootfs.ext2
|
|
+-- rootfs.ext4
|
|
+-- rootfs.tar
|
|
+-- sdcard.img
|
|
+-- u-boot.bin
|
|
+-- u-boot.itb
|
|
+-- u-boot-spl.bin
|
|
|
|
|
|
Creating a bootable SD card with genimage
|
|
=========================================
|
|
|
|
By default Buildroot builds a SD card image for you. All you need to do
|
|
is dd the image to your SD card, which can be done with the following
|
|
command on your development host:
|
|
|
|
$ sudo dd if=output/images/sdcard.img of=/dev/sdb bs=4096
|
|
|
|
The above example command assumes the SD card is accessed via a USB card
|
|
reader and shows up as /dev/sdb on the host. Adjust it accordingly per
|
|
your actual setup.
|
|
|
|
Booting the SD card on the board
|
|
================================
|
|
|
|
Make sure that the all DIP switches are set to the off position for
|
|
default boot mode (MSEL mode = 1011), insert the SD card and power
|
|
up the board.
|
|
|
|
Connect the USB cable and open minicom (/dev/ttyUSB1, 115200, 8N1).
|
|
|
|
See the 'SiFive HiFive Unmatched Getting Started Guide' for
|
|
more details (https://www.sifive.com/documentation).
|
|
|
|
You will get a warning reported by fdisk when you examine the SD card.
|
|
This is because the genimage_sdcard.cfg file doesn't specify the SD card
|
|
size (as people will naturally have different sized cards), so the
|
|
secondary GPT header is placed after the rootfs rather than at the end
|
|
of the disk where it is expected to be.
|
|
|
|
You will see something like this at boot time:
|
|
|
|
[ 0.989458] mmc0: host does not support reading read-only switch, assuming write-enable
|
|
[ 0.996772] mmc0: new SDHC card on SPI
|
|
[ 1.001634] mmcblk0: mmc0:0000 SD8GB 7.28 GiB
|
|
[ 1.038079] GPT:Primary header thinks Alt. header is not at the end of the disk.
|
|
[ 1.044759] GPT:52389 != 15264767
|
|
[ 1.048051] GPT:Alternate GPT header not at the end of the disk.
|
|
[ 1.054015] GPT:52389 != 15264767
|
|
[ 1.057323] GPT: Use GNU Parted to correct GPT errors.
|
|
[ 1.062479] mmcblk0: p1 p2 p3
|
|
|
|
|
|
Testing under QEMU
|
|
==================
|
|
|
|
The SD card image can be tested using QEMU:
|
|
|
|
$ qemu-system-riscv64 -M sifive_u,msel=11 -smp 5 -m 8G \
|
|
-display none -serial stdio -nic user \
|
|
-bios output/images/u-boot-spl.bin \
|
|
-drive file=output/images/sdcard.img,if=sd
|