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Install the package files contained in the downloader/ directory on the included DVD.

[PC ~]$ sudo dpkg --install hermit-at_[version]_i386.deb
[PC ~]$ sudo dpkg --install shoehorn-at_[version]_i386.deb

Extract the contents of the hermit-at-win_[version].zip archive stored in the downloader/ directory on the included DVD to an appropriate folder.

Boot the Armadillo in maintenance mode by appropriately setting the jumpers as shown in 表2.8「Jumper Settings」 and then powering the board on.

Ensure that the serial interface on the work PC that is connected to the Armadillo is not being used by another application. If another application is using the serial interface, please either close the connection or close the application in order to free the interface.

On Linux, execute the hermit-at command as shown in 図5.2「Download Command」.

The download option is a sub-command of hermit-at. The --input-file option is used to specify the file to be written to flash. The --region option is used to specify the region to be written to. Therefore in the following example linux.bin.gz will be written to the kernel region.

[PC ~]$ hermit download --input-file linux.bin.gz --region kernel

If using a serial interface other than ttyS0, the port must be specified with the --port option as shown in 図5.3「Download Command (With Port Option)」^[10].

[PC ~]$ hermit download --input-file linux.bin.gz --region kernel --port ttyS1

The bootloader region has a simple protection mechanism to prevent mistaken rewrites. To rewrite the bootloader region, override the protection mechanism by using the --force-locked option as shown in 図5.4「Download Command (Unprotected)」^[10].

[PC ~]$ hermit download --input-file loader-armadillo4x0-[version].bin 
        --region bootloader --force-locked

	If an incorrect image is written to the bootloader region, it will no longer be possible to boot from on-board flash memory. If this does occur, restore the bootloader by referring to 「Restoring Bootloader to Factory State」.

For Windows, execute hermit.exe. The window shown in 図5.5「Hermit-At Win32: Download Window」 will appear.

図5.5 Hermit-At Win32: Download Window

Under "Serial Port", select the serial interface connected to the Armadillo. If a drop-down list is not displayed, please enter the port name directly.

For "Image", specify the image to be written and for "Region", specify the region to be written to. If specifying the all or bootloader regions, "Force Locked" must be selected.

After all configuration is complete, click the Execute button to start the writing. The download progress is displayed in a dialog box as shown in 図5.6「Hermit-At Win32: Download Dialog」 while the image is being written to flash.

図5.6 Hermit-At Win32: Download Dialog

The dialog box will close once the download has finished.

Configure the jumpers on the Armadillo for UART boot mode by referring to 表2.8「Jumper Settings」, but do not boot the Armadillo at this stage.

Ensure that the serial interface on the work PC that is connected to the Armadillo is not being used by another application. If another application is using the serial interface, please either close the connection or close the application in order to free the interface.

Execute the command^[11] in 図5.9「shoehorn Command Example」 and then power on the Armadillo.

[PC ~]$shoehorn --boot --target armadillo4x0
        --initrd /dev/null 
        --kernel /usr/lib/hermit/loader-armadillo4x0-boot-[version].bin
        --loader /usr/lib/shoehorn/shoehorn-armadillo4x0.bin 
        --initfile /usr/lib/shoehorn/shoehorn-armadillo4x0.init
        --postfile /usr/lib/shoehorn/shoehorn-armadillo4x0.post

After executing the command the log shown in 図5.10「shoehorn Command Log」 will be displayed.

/usr/lib/shoehorn/shoehorn-armadillo4x0.bin: 1272 bytes (2048 bytes buffer)
/usr/lib/hermit/loader-armadillo4x0-boot-v2.0.0.bin: 45896 bytes (45896 bytes buffer)
/dev/null: 0 bytes (0 bytes buffer)
Waiting for target - press Wakeup now.
Initializing target...
Writing SRAM loader...
Pinging loader
Initialising hardware:
- flushing cache/TLB
- Switching to 115200 baud
- Initializing for Mobile-DDR
Pinging loader
Detecting DRAM
- 32 bits wide
- start: 0x80000000 size: 0x04000000 last: 0x83ffffff
Total DRAM: 65536kB
Loading /usr/lib/hermit/loader-armadillo4x0-boot-v2.0.0.bin:
- start: 0x83000000 size: 0x0000b348 last: 0x8300b347
initrd_start is c0400000
Moving initrd_start to c0400000
Loading /dev/null:
- start: 0xc0400000 size: 0x00000000
Writing parameter area
- nr_pages (all banks): 4096
- rootdev: (RAMDISK_MAJOR, 0)
- pages_in_bank[0]: 2048
- pages_in_bank[1]: 2048
- initrd_start: 0xc0400000
- initrd_size: 0x0
- ramdisk_size: 0x0
- start: 0x80020000 size: 0x00000900 last: 0x800208ff
Pinging loader
Starting kernel at 0x83000000

A successful execution of the shoehorn command will result in the UART boot mode version of the Hermit At bootloader (loader-armadillo4x0-boot-[version].bin) being loaded on the Armadillo. With the Armadillo in this state, refer to 「Rewriting Flash Memory With A Downloader」 to write the bootloader image to flash memory.

Execute hermit.exe and click on the Shoehorn button. The window shown in 図5.11「Hermit-At Win32: Shoehorn Window」 will appear.

図5.11 Hermit-At Win32: Shoehorn Window

Select armadillo4x0 for the target and click the execute button.

図5.12 Hermit-At Win32: shoehorn Dialog

After the dialog box appears, power on the Armadillo. The dialog box will then close automatically once the Armadillo is ready for downloading.

With the Armadillo in this state, refer to 「Rewriting Flash Memory With A Downloader」 to write the bootloader image to flash memory.