Mity CPU Platforms » MitySOM-5CSX Altera Cyclone V

05/20/2015

AL 08:22 AM Software Development: PHY not working with QSPI flash boot

Hi,
I am trying to set up the MitySOM such that U-Boot is stored on the flash memory and the Linux Kernel, DTS and FPGA image are loaded via TFTP.
Whenever I boot from the SD card with a preloader and U-boot compiled according to the... Alexandre Lopes

05/19/2015

AL 03:30 AM Software Development: RE: Boot configuration jumpers

Thank you very much. As I've seen the labeling is to the right of the switch (in my case), hence I didn't pay attention to it. Also, what I wrote should obviously read 101 = 0x5: 3.3 V SD/MMC, lack of sleep does that.
Best,
Alexandre Alexandre Lopes

05/18/2015

AD 11:30 AM Software Development: RE: Boot configuration jumpers

Sorry this isn't clear. There is silkscreen labeling below the switch corresponding to the switch locations 1-10: MSEL[0-4], CSEL[0-1], BSEL[0-2]. CSEL is Clock Select and BSEL is Boot Select. The QSPI interface is running at 1.8V and... Adam Dziedzic

AL 11:05 AM Software Development: Boot configuration jumpers

Hi,
Can someone please shed me some light on the boot configuration jumpers of the MitySOM-5CSX Dev-Kit? On the datasheet it simply says:
_"The MitySOM-5CSX Development Kits default boot configuration mode is shown in Figure 3 below.... Alexandre Lopes

04/30/2015

MW 07:53 AM Software Development: RE: Bare-metal interrupt handling working only in debugger

Hi Alex,
Glad you solved your issue, sorry we didn't provide much help. We don't have a lot of folks trying to do Bare-Metal (and we don't do it often either).
-Mike Michael Williamson

AL 06:22 AM Software Development: RE: Bare-metal interrupt handling working only in debugger

No, that was obviously not the reason. The unhosted and hosted linker scripts do link against different libraries but that only seems matters for stdio. I was able to solve the problem by rewritting everything from scratch. The way I was... Alexandre Lopes

04/28/2015

AL 03:50 PM Software Development: RE: Bare-metal interrupt handling working only in debugger

I am now thinking that I might have to use the unhosted version of the linker script (even though it worked just fine for compiling programs without interrupt handlers).
Might be that the Sourcery compiler does something 'weird' with th... Alexandre Lopes

AL 02:36 PM Software Development: RE: Bare-metal interrupt handling working only in debugger

Hi Mike,
That address is indeed the base of the interrupt table. I have been using it without any problem with other programs, which run just fine and which were compiled using the same linker script (which always inserts a vector tab... Alexandre Lopes

MW 11:20 AM Software Development: RE: Bare-metal interrupt handling working only in debugger

I personally haven't tried to do this before, but isn't address 0x30000000 the base of your interrupt vector table? Is that the actual runtime entry point (a jump instruction to the CRT) or is that an address for a reset interrupt? Can... Michael Williamson

AL 11:10 AM Software Development: Bare-metal interrupt handling working only in debugger

Hello,
I am using the MitySOM Dev Kit and I want to use interrupts in a bare-metal
application. To that effect I wrote a 'small' program where I enable the private
timer (and the interrupt bit as well) and wrote an IRQ handler.
... Alexandre Lopes