FPGA Central

Hi all,
Is there a way to initialize BRAM contents (of memories created using
CoreGen) into a new bit file without having to recompile the whole
thing? I understand that was possible using data2mem with older
versions, e.g ISE 8.2. AR#18637 says it doesn't work for newer
versions. Does somebody know a work around?
Alonzo.

On Mar 30, 4:42 pm, alonzo <[email protected]> wrote:
> Hi all,
> Is there a way to initialize BRAM contents (of memories created using
> CoreGen) into a new bit file without having to recompile the whole
> thing? I understand that was possible using data2mem with older
> versions, e.g ISE 8.2. AR#18637 says it doesn't work for newer
> versions. Does somebody know a work around?
> Alonzo.

There are tools installed with the EDK that do that.

AL

On Mar 30, 4:44*pm, LittleAlex <[email protected]> wrote:
> On Mar 30, 4:42 pm, alonzo <[email protected]> wrote:
>
> > Hi all,
> > Is there a way to initialize BRAM contents (of memories created using
> > CoreGen) into a new bit file without having to recompile the whole
> > thing? I understand that was possible using data2mem with older
> > versions, e.g ISE 8.2. AR#18637 says it doesn't work for newer
> > versions. Does somebody know a work around?
> > Alonzo.
>
> There are tools installed with the EDK that do that.
>
> AL

Yes. I know about bitinit. But it is not transparent. It works with
cores that EDK provides and requires a MHS file. My project is a
simple ISE project that instantiate a couple BRAMs. I don't think it
would help. Do you know about any other tool?
alnz.

On Mar 31, 3:05*am, alonzo <[email protected]> wrote:
> On Mar 30, 4:44*pm, LittleAlex <[email protected]> wrote:
>
> > On Mar 30, 4:42 pm, alonzo <[email protected]> wrote:
>
> > > Hi all,
> > > Is there a way to initialize BRAM contents (of memories created using
> > > CoreGen) into a new bit file without having to recompile the whole
> > > thing? I understand that was possible using data2mem with older
> > > versions, e.g ISE 8.2. AR#18637 says it doesn't work for newer
> > > versions. Does somebody know a work around?
> > > Alonzo.
>
> > There are tools installed with the EDK that do that.
>
> > AL
>
> Yes. I know about bitinit. But it is not transparent. It works with
> cores that EDK provides and requires a MHS file. My project is a
> simple ISE project that instantiate a couple BRAMs. I don't think it
> would help. Do you know about any other tool?
> alnz.

Xilinx AR's are really ROTFL stuff, from the AR you referred

Note: Using data2mem on CORE Generator memories in 9.1i or later works
only sporadically.

So Xilinx 9.1 and later are now "Sporadic software" !

ok, but that only relaced to coregen, and you have no need to used
coregen

just use the brams in ISE create a BMM file and use data2mem
it defenetly works in 10.1 too

http://www.xilinx.com/itp/xilinx10/b...cs/d2m/d2m.pdf

make BMM, use MEM file and all works
Antti

Hi,

1- Hardware : Generate you bit file whatever how . --->
system_stub_download.bit
2- Software : Compile you application ---> application.elf
3- Use Data2me to put software into bitsream.
Example :
data2mem -bm "system/implementation/system_bd" -bt
"system_stub_download.bit" -bd "system\SDK_projects\application\Debug
\application.elf" tag microblaze_0 -o b system_bram_initialised.bit

On Mar 31, 4:41*pm, [email protected] wrote:
> Hi,
>
> 1- Hardware : Generate you bit file whatever how . --->
> system_stub_download.bit
> 2- Software : Compile you application ---> application.elf
> 3- Use Data2me to put software into bitsream.
> Example :
> data2mem -bm "system/implementation/system_bd" -bt
> "system_stub_download.bit" -bd "system\SDK_projects\application\Debug
> \application.elf" tag microblaze_0 *-o b system_bram_initialised.bit

you did not read the OP, same as me.

he only concern is COREGEN related memories
not those made with EDK or hand crafted

there are no problems with EDK
there are no problems when memories are used with ISE (no EDK flow) as
long as they are not done with Coregen

as per Xilinx AR, ISE 8.1 was the last version of ISE that supported
coregen generated memories and data2mem

Antti

On Mar 30, 8:51*pm, "[email protected]"
<[email protected]> wrote:
> On Mar 31, 3:05*am, alonzo <[email protected]> wrote:
>
>
>
> > On Mar 30, 4:44*pm, LittleAlex <[email protected]> wrote:
>
> > > On Mar 30, 4:42 pm, alonzo <[email protected]> wrote:
>
> > > > Hi all,
> > > > Is there a way to initialize BRAM contents (of memories created using
> > > > CoreGen) into a new bit file without having to recompile the whole
> > > > thing? I understand that was possible using data2mem with older
> > > > versions, e.g ISE 8.2. AR#18637 says it doesn't work for newer
> > > > versions. Does somebody know a work around?
> > > > Alonzo.
>
> > > There are tools installed with the EDK that do that.
>
> > > AL
>
> > Yes. I know about bitinit. But it is not transparent. It works with
> > cores that EDK provides and requires a MHS file. My project is a
> > simple ISE project that instantiate a couple BRAMs. I don't think it
> > would help. Do you know about any other tool?
> > alnz.
>
> Xilinx AR's are really ROTFL stuff, from the AR you referred
>
> Note: Using data2mem on CORE Generator memories in 9.1i or later works
> only sporadically.
>
> So Xilinx 9.1 and later are now "Sporadic software" !
>
> ok, but that only relaced to coregen, and you have no need to used
> coregen
>
> just use the brams in ISE create a BMM file and use data2mem
> it defenetly works in 10.1 too
>
> http://www.xilinx.com/itp/xilinx10/b...cs/d2m/d2m.pdf
>
> make BMM, use MEM file and all works
> Antti

Seems to work. Thank you.
alnz.