LayGO PXS Developer's Guide

Saving Programs

Once your program is working, you can save it onto the PXS by writing it into the Flash file system. The Flash file system is managed using the RedBoot FIS commands. To list the files in the Flash file system, use the fis listcommand:

RedBoot> fis list
FLASH: 0x05030000 - 0x05400000, 61 blocks of 0x00010000 bytes each.
Name              FLASH Addr   Mem Addr    Length      Entry Point
hdlcsrv           0x05030000   0x00000000  0x00080000  0x00000000
laygocfg          0x053D0000   0x053D0000  0x00010000  0x00000000
pxscfg            0x053E0000   0x053E0000  0x00010000  0x00000000
FIS_directory     0x053F0000   0x053F0000  0x00010000  0x00000000

The last 3 blocks of Flash (entries laygocfg, pxscfg and FIS_directory) are reserved for system use and should never be deleted or modified. This leaves 58 pages pages of 64K each available to store programs.

To write a program image into Flash, load it into the PXS, then use the fis create command:

RedBoot> load -r pdktest.bin
Loading from default TFTP server: 192.168.250.2
Defaulting to entry point of 0x00000000.
Raw load done: 436448 bytes read
Address range: 00000000-0006a8e0, Entry point: 00000000,
RedBoot> fis create pdktest
... Erase from 0x050B0000-0x05120000: .......
... Program from 0x00000000-0x0006a8e1 at 0x050B0000: .......
... Erase from 0x053f0000-0x05400000: .
... Program from 0x007a0000-0x007b0000 at 0x053f0000: .
RedBoot> fis list
FLASH: 0x05030000 - 0x05400000, 61 blocks of 0x00010000 bytes each.
Name              FLASH Addr   Mem Addr    Length      Entry Point
hdlcsrv           0x05030000   0x00000000  0x00080000  0x00000000
pdktest           0x050B0000   0x00000000  0x00070000  0x00000000
laygocfg          0x053D0000   0x053D0000  0x00010000  0x00000000
pxscfg            0x053E0000   0x053E0000  0x00010000  0x00000000
FIS_directory     0x053F0000   0x053F0000  0x00010000  0x00000000

Once the program is written into Flash, it can be set to load as the default application:

RedBoot> default
Default application: hdlcsrv
RedBoot> app
Installed applications:
  hdlcsrv version 3.23
  pdktest version 1.18
RedBoot> default pdktest
Default application: pdktest

The program can also be loaded and executed directly from Flash:

RedBoot> fis load pdktest
RedBoot> go

To delete an entry in the Flash file system, use the fis delete command:

RedBoot> fis delete pdktest
Delete image 'pdktest' - are you sure (y/n)? y
... Erase from 0x050B0000-0x05120000: .......
... Erase from 0x053f0000-0x05400000: .
... Program from 0x007a0000-0x007b0000 at 0x053f0000: .

If you want to update an program image for which there is already an entry in Flash, first delete the entry, then load the image and recreate the entry.