Target Software Installation
Contents
Configure U-Boot
Environment variables
U-Boot can be customized in a flexible way with the use of "environment variables/scripts". The command printenv shows you most of them and their current value:
BIOS> printenv bootcmd=run jffsboot bootdelay=20 baudrate=115200 ethaddr= autoload=no ...
The command setenv is used to change these variables. For example, to set the IP address (don't do it yet):
BIOS> setenv ipaddr 192.168.0.10
The command saveenv is used to save the state of your environment variables in FLASH memory; that way they will be available at next boot:
BIOS> saveenv Saving Environment to Flash... . done Un-Protected 1 sectors Erasing Flash... . done Erased 1 sectors Writing to Flash... done . done Protected 1 sectors
Network configuration
In order to use the U-Boot's network features, you have to set the network environment variables:
BIOS> setenv netmask 255.255.255.0 (this default value should be fine in most situations) BIOS> setenv ipaddr 192.168.0.10 BIOS> setenv serverip 192.168.0.2 (the IP address of your tftp server/PC hosting the files to download) BIOS> setenv rootpath "/tftpboot/apf9328-root" (to boot Linux over NFS)
You can use the dhcp command to configure these variables from your DHCP server. You probably will have to adjust the serverip variable manually.
BIOS> dhcp dm9000 i/o: 0x15c00000, id: 0x90000a46 MAC: 00:0e:32:00:00:01 operating at 100M full duplex mode BOOTP broadcast 1 DHCP client bound to address 192.168.0.10 BIOS> setenv serverip 192.168.0.2 BIOS> saveenv
Do not forget to save your changes in FLASH, to have them available at next power up:
BIOS> saveenv
In case of troubles you can use the following U-Boot script to reset the variables to the "factory"/default settings:
BIOS> run flash_reset_env
Linux kernel installation
- check that your Armadeus kernel image size is smaller than the U-Boot partition (2MB with Armadeus 3):
[armadeus]$ ls -al buildroot/binaries/apf*/
- if yes, copy it to your TFTP server directory (here /tftpboot/); replace XX with your board name (apf9328 or apf27):
[armadeus]$ cp buildroot/binaries/apfXX/apfXX-linux.bin /tftpboot/
- Load kernel image with U-Boot through network:
BIOS> tftpboot ${loadaddr} apfXX-linux.bin
or with the serial line:
BIOS> loadb ${loadaddr}
''Ctrl+Altgr+\+c to access kermit command line then:''
(/home/.../) C-Kermit>send /tftpboot/apf9328-linux.bin
''After download is completed, you can type the c command to reconnect to the terminal:''
(/home/.../) C-Kermit>c
Connecting to /dev/ttyUSB0, speed 115200
Escape character: Ctrl-\ (ASCII 28, FS): enabled
Type the escape character followed by C to get back,
or followed by ? to see other options.
----------------------------------------------------
## Total Size = 0x0013d0b0 = 1298608 Bytes
## Start Addr = 0x08000000
BIOS>
 |
Warning: If the loaded kernel image is too large, the following operation can destroy data that are stored after the partition limits (e.g. RootFS) |
Check that transfered size value is less than 2097152 (0x200000 hex) with armadeus 3
Bytes transferred = 1313216 (1409c0 hex)
- You can test your new kernel image without flashing it with; if so you will have to reload it again after test:
BIOS> bootm ${loadaddr}
- Flash kernel image with:
BIOS> run flash_kernel
- To make it easier, you can use automatic scripts that will download the image and flash it. So next time you will only launch:
BIOS> run update_kernel
- If you only want to try a new kernel without flashing the kernel image you can launch it directly from RAM:
BIOS> setenv bootargs ${console} ${mtdparts}; run addjffsargs addipargs; bootm
(the kernel image you want to try must have been loaded at ${loadaddr})
rootfs installation
- check that your Armadeus RootFS image size is smaller than the RootFS partition:
[armadeus]$ ls -al buildroot/binaries/apf9328/ ... [armadeus]$ cp buildroot/binaries/apf9328/apf9328-rootfs.arm.jffs2 /tftpboot/
- Load RootFS image with U-Boot through network:
BIOS> tftpboot ${loadaddr} apf9328-rootfs.arm.jffs2
or serial line:
BIOS> loadb ${loadaddr}
Ctrl+Altgr+\+c to access kermit command line then...
send pathtoyourhostedbuildrootdir/rootfs.arm.jffs2
then you can type the c command to reconnect to the terminal
- Flash RootFS image with:
BIOS> run flash_rootfs
- Now you should be ready to test Linux:
BIOS> boot
- To make it easier, you can use automatic scripts. So next time you will only launch:
BIOS> run update_rootfs
FPGA firmware installation
The FPGA firmwares are all located in the firmware/ directory of your Armadeus view:
[armadeus]$ ls firmware/ apf_pkg BRAMTest bus_led led PS2 PS2_Opencore servo sram_test wishbone_example Xtools
You can make some trials with the firmware/PS2/ps2_top.bit file.
| |
Warning: Check that your bitfile size is smaller than the firmware partition size (256KB) before trying the following commands or you may corrupt your Linux kernel FLASH partition !!! |
- Load FPGA firmware image file with U-Boot through:
Ethernet:
BIOS> tftpboot ${loadaddr} fpgafirmware.bit
fpgafirmware.bit is of course the name of your bitfile stored in your TFTP shared directory (/tftpboot/)
or serial line:
BIOS> loadb ${loadaddr}
Ctrl+Altgr+\+c to access kermit command line then...
C-Kermit> send path_to_your_tftp/fpgafirmware.bit
then you can type the c command to reconnect to the terminal
- Flash your firmware image with:
BIOS> run flash_firmware
- Test your new FPGA firmware:
BIOS> fpga load 0 ${firmware_addr} ${firmware_len}
- When your are satisfied with your firmware you can make it "autoloaded" at power up:
BIOS> setenv firmware_autoload 1 BIOS> saveenv
Update U-Boot
There are two steps to update U-Boot:
1] Load the new U-Boot code in RAM
You can use the following commands to download U-boot:
With Ethernet and a TFTP server:
BIOS> tftpboot ${loadaddr} apf9328-u-boot.bin
With Ethernet and a NFS server:
BIOS> nfs ${loadaddr} host_ip_addr:/nfs_path_to_buildroot/apf9328-u-boot.bin
With the kermit and a serial line
BIOS> loadb 08000000
<CTRL><ALT GR>\
c
send path_to_buildroot/apf9328-u-boot.bin
c
2] Transfer code from RAM to Flash memory
There is a simple U-Boot command/script to do that:
BIOS> run flash_uboot
Advanced informations can be found at the BootLoader wiki page.
Flash memory partitions (APF9328)
| Armadeus 2.x address range (index from FLASH physical @ 0x10000000) |
Armadeus 3 address range (index from FLASH physical @ 0x10000000) |
Type |
|---|---|---|
| 0x000000 - 0x03FFFF ( 256KB ) | 0x000000 - 0x03FFFF ( 256KB ) | U-Boot |
| 0x040000 - 0x5FFFF ( 128KB ) | 0x040000 - 0x5FFFF ( 128KB ) | U-Boot environment variables |
| 0x060000 - 0x9FFFF ( 256KB ) | 0x060000 - 0x9FFFF ( 256KB ) | FPGA bitfile |
| 0x0A0000 - 0x21FFFF ( 1.5MB ) | 0x0A0000 - 0x29FFFF ( 2MB ) | Linux kernel image |
| 0x220000 - End of FLASH ( ~6 MB or ~14MB ) | 0x2A0000 - End of FLASH ( ~5.5 MB or ~13.5MB ) | Root filesystem |
Flash memory partitions (APF27)
| Armadeus 3 address range (index from FLASH physical @ 0x10000000) |
Type |
|---|---|
| 0x00000000 - 0x0009FFFF ( 640KiB including NAND SPL and 384kiB spare memory for bad blocks) | U-Boot |
| 0x000A0000 - 0x000FFFFF ( 384kiB ) | U-Boot environment variables |
| 0x00100000 - 0x0017FFFF ( 512 kiB ) | FPGA bitfile |
| 0x00180000 - 0x0067FFFF ( 5 MiB ) | Linux kernel image |
| 0x00680000 - End of FLASH ( >~250MiB ) | Root filesystem |
