Difference between revisions of "Target Software Installation"
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Revision as of 21:34, 1 June 2008
Contents
Flash memory partitions (APF9328)
| Address range (index from FLASH physical @ 0x10000000) | Type |
|---|---|
| 0x000000 - 0x03FFFF ( 256KB ) | U-Boot |
| 0x040000 - 0x5FFFF ( 128KB ) | U-Boot environment variables |
| 0x060000 - 0x9FFFF ( 256KB ) | FPGA bitfile |
| 0x0A0000 - 0x21FFFF ( 1.5MB ) | Linux kernel image |
| 0x220000 - End of FLASH ( ~6 MB or ~14MB ) | Root filesystem |
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=00:0E:32:00:00:01 autoload=no ...
Use the command setenv to change these variables. For example, to set the IP address:
BIOS> setenv ipaddr 192.168.0.3
Use the command saveenv to save the state of your environment variables in FLASH memory:
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 192.168.0.3 BIOS> setenv serverip 192.168.0.5 (the IP address of your tftp server/PC hosting the files to download) BIOS> setenv rootpath "/tftpboot/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 192.168.0.3 BIOS> setenv serverip 192.168.0.5 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
- First check that your Armadeus kernel image size is smaller than the U-Boot partition (1,5MB):
$ ls -al buildroot/binaries/armadeus/ ... $ cp buildroot/binaries/armadeus/linux-kernel-2.6.xx-arm.bin /tftpboot/
- Load kernel image with U-Boot through network:
BIOS> tftpboot 08000000 pathtoyourhostedbuildrootdir/linux-kernel-2.6.xx-arm.bin
or with the serial line:
BIOS> loadb 08000000 Ctrl+Altgr+\+c to access kermit command line then... send pathtoyourhostedbuildrootdir/linux-kernel-2.6.xx-arm.bin the you can type the c command to reconnect to the terminal
!!! 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 1572864 (0x180000 hex)
Bytes transferred = 1313216 (1409c0 hex)
- You can test your new kernel image without flashing it with:
BIOS> bootm 08000000
- Flash kernel image with:
BIOS> run flash_kernel
- To make it easier next time, you can write a small U-Boot script:
BIOS> setenv kernel_img linux-kernel-2.6.23.1-arm.bin
BIOS> setenv update_kernel_tftp if tftp 08000000 \${kernel_img}\; then run flash_kernel\; fi
- So next time you will only launch:
BIOS> run update_kernel_tftp
- 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} ${mtdparts}; run addjffsargs addipargs; bootm
(the kernel image you want to try must have been loaded at 0x08000000)
Linux RootFS installation
- Load RootFS image with U-Boot through network:
BIOS> tftpboot 08000000 pathtoyourhostedbuildrootdir/rootfs.arm.jffs2
or serial line:
BIOS> loadb 08000000 Ctrl+Altgr+\+c to access kermit command line then... send pathtoyourhostedbuildrootdir/rootfs.arm.jffs2
then you can type the c command to reconnect to the terminal
- Flash RootFS image with:
BIOS> run flash_rootfs
- Now you should be ready to test Linux:
BIOS> boot
- To make it easier next time, you can write a small U-Boot script:
BIOS> setenv rootfs_img rootfs.arm.jffs2
BIOS> setenv update_rootfs_tftp if tftp 08000000 \${rootfs_img}\; then run flash_rootfs\; fi
BIOS> saveenv
- So next time you will only launch:
BIOS> run update_rootfs_tftp
FPGA firmware installation
The FPGA firmwares are all located in the firmware/ directory of your Armadeus view:
[armadeus]$ ls firmware/ BRAMTest led PS2 PS2_Opencore sram_test
You can make some trials with the firmware/PS2/ps2_top.bit file.
!!! 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 08000000 fpgafirmware.bit
fpgafirmware.bit is of course the name of your bitfile stored in your TFTP shared directory (/tftpboot/)
or serial line:
BIOS> loadb 08000000 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 08000000 /tftpboot_path_to_buildroot/u-boot.bin
With Ethernet and a NFS server:
BIOS> nfs 08000000 host_ip_addr:/nfs_path_to_buildroot/u-boot.bin
With the kermit and a serial line
BIOS> loadb 08000000 <CTRL><ALT GR>\ c send path_to_buildroot/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.
