Copyright (C) 2015 Josh Wu
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
The project is to make use easy to build a bootable SD card for all at91 board. Also it can flash the bootable code to spi flash for all at91 boards as well.
In the meantime, it will also has specified U-Boot variables for each board. You can configure them by yourself and customized for each board.
This bootable media has builtin u-boot variables. To make the variables work you need to modify env_config.txt first to adapt to your work environment.
- serverip: your tftp server ip
- tftp_path_xxx: your tftp path for kernel, u-boot, at91bootstrap.
- nfs_path_xxx: your nfs rootfs path for kernel to mount.
By default, U-Boot will load kernel from tftp path. And mount the nfs in the server.
- Prepare a SD card, FAT format, and the volume name should be:
SDCARD_BOOT - Insert the SD card to PC.
- Run
./build_boot_sdcard.sh <boardname>for example sama5d4ek:./build_boot_sdcard.sh sama5d4ek - That's it. The SD card should be bootable.
- You need install SAM-BA first.
- Connect board to PC via USB cable.
- Press DIS_BOOT or disable boot media and power up the board. So that board will be sam-ba monitor mode.
- Run
./build_boot_spi.sh <boardname>for example sama5d4ek:./build_boot_spi.sh sama5d4ek - Now board can boot up well.
- env_config.txt is user environment related. It defines your server ip, your tftp path in the server. When you use this project first time, please setup this.
- env_common.txt is a common u-boot environment variables. It's for all boards.
- /env_common.txt is board relevant, it will override same variables in the top dir's env_common.txt.
- env_demo_auto_flash.txt is some variables & command related with mmc operation. It can flash the SD card binary demo files into nand/spi flash. You can insert the SD can run it to flash demo automatically.
- cd at91bootstrap source folder
- run build_bootstrap.sh to build all at91bootstrap binaries.
- link the output folder to binaries:
./relink <Commit ID> - cd u-boot source folder
- run build_uboot.sh to build all u-boot binaries.
- link the output folder folder to binaries:
./relink <Commit ID>
- My SD card cannot boot and nothing or RomBOOT displayed?
As before sama5d3xek, the ROMCode have some bugs so sometime it cannot found the boot.bin in FAT partition. To solve this, you can do: a. Insert your card to Win7 machine, and format the whole card. (without partition table) b. Copy a boot.bin file to SD card. c. Remove it from Win7 machine, then insert the SD card to Linux machine, and run this script again. d. Remove the card and insert to the board to boot.
U-Boot>mmcinfo
Device: mci
Manufacturer ID: 2
OEM: 544d
Name: SD32G
Tran Speed: 50000000
Rd Block Len: 512
SD version 2.0
High Capacity: Yes
Capacity: 30.4 GiB
Bus Width: 4-bit
| Boards | tested and supported |
|---|---|
| at91sam9m10g45ek | OK |
| sama5d3xek | OK |
| sama5d4ek | N/A, only support microSD |
| sama5d2_xplained | |
| sama5d3_xplained | |
| sama5d4_xplained |
U-Boot> mmcinfo
Device: mci
Manufacturer ID: 1b
OEM: 534d
Name: 00000
Tran Speed: 50000000
Rd Block Len: 512
SD version 3.0
High Capacity: No
Capacity: 1.9 GiB
Bus Width: 4-bit
| Boards | tested and supported |
|---|---|
| at91sam9m10g45ek | N/A, only support SD card |
| sama5d3xek | N/A |
| sama5d4ek | OK |
| sama5d2_xplained | |
| sama5d3_xplained | |
| sama5d4_xplained |