From a51a55262d53a839fe53f546b1f854f81da49b33 Mon Sep 17 00:00:00 2001 From: Yu-Chien Peter Lin Date: Wed, 25 Sep 2024 15:21:51 +0800 Subject: [PATCH] board/andes/ae350/readme.txt: add bootloader/DT flashing instructions Add a section to document how to update bootloader on AE350 platforms with SPI_burn tool. Signed-off-by: Yu Chien Peter Lin Reviewed-by: Leo Yu-Chi Liang Signed-off-by: Thomas Petazzoni --- board/andes/ae350/readme.txt | 43 ++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/board/andes/ae350/readme.txt b/board/andes/ae350/readme.txt index 4de4cb3894..36561fc777 100644 --- a/board/andes/ae350/readme.txt +++ b/board/andes/ae350/readme.txt @@ -41,6 +41,49 @@ After building, you should obtain the following files: |-- u-boot-spl.bin `-- u-boot.itb +How to update the bootloader and device-tree +============================================ + +To update the bootloader and device tree, make sure you have +an ICEman (Andes OpenOCD [1]) and AICE [2] connection set up +as below: + + Local Host Local/Remote Host + .-----------------. .--------------. + | buildroot images| | | + | | ICEman host + | .----------. | | .--------. | + | | SPI_burn |<---+--socket--+->| ICEman | | + | '----------' | | '--.-----' | + '-----------------' '-----|--------' + | + USB + .--------------. | + | target | .-----v-----. + | board <----JTAG---| AICE | + | | '-----------' + '--------------' + +[1] https://github.com/andestech/ICEman +[2] https://www.andestech.com/en/products-solutions/andeshape-platforms/aice-micro/ + +The Andes SPI_burn tool will be located in output/host/bin. Use +the following commands to update the bootloader and device tree: + + $ SPI_burn --host $ICE_IP --port $ICE_BURNER_PORT --addr 0x0 -i u-boot-spl.bin + $ SPI_burn --host $ICE_IP --port $ICE_BURNER_PORT --addr 0x10000 -i u-boot.itb + $ SPI_burn --host $ICE_IP --port $ICE_BURNER_PORT --addr 0xf0000 -i ae350_ax45mp.dtb + +Note that the --addr option specifies the offset starting from +the flash base address 0x80000000 and set by U-Boot configurations. +e.g. +u-boot-spl.bin : CONFIG_SPL_TEXT_BASE=0x80000000 +u-boot.itb : CONFIG_SPL_LOAD_FIT_ADDRESS=0x80010000 +ae350_ax45mp.dtb: CONFIG_SYS_FDT_BASE=0x800f0000 + +How to write the SD card +======================== + Copy the sdcard.img to a SD card with "dd": $ sudo dd if=sdcard.img of=/dev/sdX bs=4096