Hello,
I'm developing on the DM8148 using the TI_EZSDK_5_05_02_00. There is 512 MB's of memory available and I've followed the directions here to make all needed changes:
http://processors.wiki.ti.com/index.php/EZSDK_Memory_Map#Changing_Memory_Map_For_512MB_DM814x_Board
The board boots and I can load the provided FW(dm814x_hdvicp.xem3 and dm814x_hdvpss.xem3) and can successfully run the sample code (encode_a8host_debug and decode_a8host_debug).
For the file system, I have created a RAM disk that is burned into flash and that is read out at bootup. I was planning on loading the firmware files and deleting them to free up space on the RAM disk for other files. After I do a firmware load, I delete the firmware files. When I see how much space is left on the filesystem, the filesystem size has not changed. If I boot up and delete the files without loading the firmware, the filesystem size changes as expected.
######### Loading FW First before delete ##########
root@dm814x-evm:/home# firmware_loader 1 dm814x_hdvicp.xem3 start
FIRMWARE: I2cInit will be done by M3
FIRMWARE: Memory map bin file not passed
Usage : firmware_loader <Processor Id> <Location of Firmware> <start|stop> [-mmap <memory_map_file>] [-i2c <0|1>]
===Mandatory arguments===
<Processor Id> 0: DSP, 1: Video-M3, 2: Vpss-M3
<Location of Firmware> firmware binary file
<start|stop> to start/stop the firmware
===Optional arguments===
-mmap input memory map bin file name
-i2c 0: i2c init not done by M3, 1(default): i2c init done by M3
FIRMWARE: isI2cInitRequiredOnM3: 1
FIRMWARE: Default memory configuration is used
Firmware Loader debugging not configured
Default FL_DEBUG: warning
Allowed FL_DEBUG levels: error, warning, info, debug, log
MemCfg: DCMM (Dynamically Configurable Memory Map) Version : 2.1.2.1
FIRMWARE: 1 start Successful
root@dm814x-evm:/home# firmware_loader 2 dm814x_hdvpss.xem3 start
FIRMWARE: I2cInit will be done by M3
FIRMWARE: Memory map bin file not passed
Usage : firmware_loader <Processor Id> <Location of Firmware> <start|stop> [-mmap <memory_map_file>] [-i2c <0|1>]
===Mandatory arguments===
<Processor Id> 0: DSP, 1: Video-M3, 2: Vpss-M3
<Location of Firmware> firmware binary file
<start|stop> to start/stop the firmware
===Optional arguments===
-mmap input memory map bin file name
-i2c 0: i2c init not done by M3, 1(default): i2c init done by M3
FIRMWARE: isI2cInitRequiredOnM3: 1
FIRMWARE: Default memory configuration is used
Firmware Loader debugging not configured
Default FL_DEBUG: warning
Allowed FL_DEBUG levels: error, warning, info, debug, log
MemCfg: DCMM (Dynamically Configurable Memory Map) Version : 2.1.2.1
FIRMWARE: 2 start Successful
root@dm814x-evm:/home# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/root 76345 70062 2341 97% /
devtmpfs 1024 48 976 5% /dev
tmpfs 40 0 40 0% /mnt/.splash
none 1024 48 976 5% /dev
tmpfs 16384 32 16352 0% /var/volatile
tmpfs 86532 0 86532 0% /dev/shm
tmpfs 16384 0 16384 0% /media/ram
192.168.0.143:/home/tidev/nfs_share
19737344 15305600 3429120 82% /mnt/nfs
root@dm814x-evm:/home# rm dm814x_hdv*
root@dm814x-evm:/home# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/root 76345 70062 2341 97% /
devtmpfs 1024 48 976 5% /dev
tmpfs 40 0 40 0% /mnt/.splash
none 1024 48 976 5% /dev
tmpfs 16384 32 16352 0% /var/volatile
tmpfs 86532 0 86532 0% /dev/shm
tmpfs 16384 0 16384 0% /media/ram
192.168.0.143:/home/tidev/nfs_share
19737344 15305600 3429120 82% /mnt/nfs
root@dm814x-evm:/home#
######### Delete FW before loading #########
root@dm814x-evm:/home# ls
dm814x_hdvicp.xem3 dm814x_hdvpss.xem3 root
root@dm814x-evm:/home# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/root 76345 70062 2341 97% /
devtmpfs 1024 48 976 5% /dev
tmpfs 40 0 40 0% /mnt/.splash
none 1024 48 976 5% /dev
tmpfs 16384 24 16360 0% /var/volatile
tmpfs 86532 0 86532 0% /dev/shm
tmpfs 16384 0 16384 0% /media/ram
192.168.0.143:/home/tidev/nfs_share
19737344 15305600 3429120 82% /mnt/nfs
root@dm814x-evm:/home# rm dm814x_hdv*
root@dm814x-evm:/home# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/root 76345 33012 39391 46% /
devtmpfs 1024 48 976 5% /dev
tmpfs 40 0 40 0% /mnt/.splash
none 1024 48 976 5% /dev
tmpfs 16384 24 16360 0% /var/volatile
tmpfs 86532 0 86532 0% /dev/shm
tmpfs 16384 0 16384 0% /media/ram
192.168.0.143:/home/tidev/nfs_share
19737344 15305600 3429120 82% /mnt/nfs
root@dm814x-evm:/home#
I am wondering why this is happening. From the looks of the memory map in the link above, there is room dedicated for the firmware to reside in. Is this expected behavior? Is there anything I can do to change it?
