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Adjust Boot Image to load multiple .rgba data files
Posted: Mon Jul 03, 2017 3:33 pm
by Boitumelo_Ruf
Hi everyone,
I am currently working HDMI Test example from the starter guide, which loads and image at startup and displays it on the screen. I now want to adjust it in order to load multiple images (two for the start), as input data for our stereo algorithm. How do I need to adjust the boot image file. I tried two options:
1. Load a second image to a different address that the first (with [load=...]). This didn't work at all. The board didn't even start.
2. Load a second image with an offset address (with [offset=...]). With this the board started up, but there was no data at the expected address.
Can someone please help me?
Thanks.
\Boitumelo
Re: Adjust Boot Image to load multiple .rgba data files
Posted: Fri Jul 07, 2017 12:51 pm
by Emilie_Wheatley
Dear Boitumelo,
What I just tried:
1- Add a second image that load to a different address to the first one to your boot.bin file. I don't know why that solution didn't work, which address did your load your second image to?
Here is my bif file
Code: Select all
the_ROM_image:
{
[bootloader]D:\SDSoC\platforms\BIF\fsbl.elf
D:\SDSoC\platforms\BIF\design_1_wrapper.bit
[load = 0x38000000]D:\SDSoC\platforms\BIF\EMC2_with_logo.rgba
[load = 0x38400000]D:\SDSoC\platforms\BIF\input_70x46.rgba
}2- In the code I set the VDMA framebuffer address to the one of my first image then start the vdma.
I do a sleep for 20s before changing to the second image.
To do so I stop the vdma, then set the vdma framebuffer address to the one of my second image then start the vdma again.
And I see the second image on my monitor.
Here is my code:
Code: Select all
// Set the framebuffer to the address of the first image
ReadCfg.FrameStoreStartAddr[0] = 0x38000000;
Status = XAxiVdma_DmaSetBufferAddr(&Vdma, XAXIVDMA_READ, ReadCfg.FrameStoreStartAddr);
if (Status != XST_SUCCESS) {
xdbg_printf(XDBG_DEBUG_ERROR,"Read channel set buffer address failed %d\r\n", Status);
return XST_FAILURE;
}
// Start the VDMA
Status = vdma_start();
if (Status != XST_SUCCESS) {
xil_printf("error starting VDMA..!");
return Status;
}
sleep(20);
// Stop the VDMA
vdma_stop();
// Set the framebuffer to the address of the secondimage
ReadCfg.FrameStoreStartAddr[0] = 0x38400000;
Status = XAxiVdma_DmaSetBufferAddr(&Vdma, XAXIVDMA_READ, ReadCfg.FrameStoreStartAddr);
if (Status != XST_SUCCESS) {
xdbg_printf(XDBG_DEBUG_ERROR,"Read channel set buffer address failed %d\r\n", Status);
return XST_FAILURE;
}
// Start the VDMA
Status = vdma_start();
if (Status != XST_SUCCESS) {
xil_printf("error starting VDMA..!");
return Status;
}
I hope that helps.
Regards,
Emilie
Re: Adjust Boot Image to load multiple .rgba data files
Posted: Tue Jul 11, 2017 12:06 pm
by Boitumelo_Ruf
Hi Emilie,
thanks, that worked.
With what criteria did you choose the second load address (0x38400000)? I tried multiple addresses such as 0x40000000, 0x42000000 or 0x72000000. All of them didn't work.
\Boitumelo
Re: Adjust Boot Image to load multiple .rgba data files
Posted: Tue Jul 11, 2017 1:21 pm
by Emilie_Wheatley
Hi Boitumelo,
The data is loaded in the DDR and all the addresses you suggested (0x40000000, 0x42000000 or 0x72000000) are out of range of the DDR (0x0 - 0x3FFFFFFF).
Regards,
Emilie
Re: Adjust Boot Image to load multiple .rgba data files
Posted: Tue Jul 11, 2017 3:18 pm
by Boitumelo_Ruf
I see. Makes sense.
Thanks a lot.
\Boitumelo