▲ 13 r/SBCs
Intel Gordon Peak MRB
Hi everyone, this is my first post. I need any information about this board, whether it's a datasheet or a bsp
u/radibeam — 11 days ago
▲ 34 r/CarHacking
DIY Mazda cmu research unit
UART, JTAG, WDOG jumper and SPI flash are output to the external board. All this is necessary for the development of uboot
u/radibeam — 1 month ago
▲ 1 r/embedded
imx6 jtag random Invalid ACK (7) in DAP response
Hi everyone, I'm still picking at the mazda cmu and I've already been able to connect to jtag, but there's a problem. After initializing the memory, the chip stops responding to jtag commands after a while, and openocd resets the connection accordingly. If I do everything quickly and try to download the compiled project from eclipse, I get a bunch of:
Error: timeout waiting for DSCR bit change
Error: Error waiting for InstrCompl=1
Error: Error waiting for cortex_a_exec_opcode
and the subsequent loss of communication. I tried initializing the APB-AP registers with the command imx6d.dap apcsw 1 0 and disabling wdog, but it didn't help. I have attached a link to the archive with my configs and log. link
u/radibeam — 2 months ago
▲ 35 r/embedded
U-boot porting help
hi, I recently asked for help porting uboot to mazda cmu, and here I am again. I wrote imxconfig.cfg containing all dcd values, plugin.S, which contains dcd values in asm format, and the board even gave some signs of life. it started consuming 100mA more within 5 seconds, and then it resets to uuu mode again. at the same time, there is silence in the console, and I am completely sure that the console is exactly the one I need (if the dude from mazda-cmu-documentation was not mistaken). What should I do? I don't remember what's going on with the board, whether I should order a jtag sample to find out what's going on, or if there are easier ways. PS: This is my first time porting uboot, and it turned out to be much more difficult than porting linux.
u/radibeam — 2 months ago
imx6d does not load u-boot on mazda cmu
Hello everyone. I'm trying to run u-boot on a mazda cmu, but it just won't start. I've tried making an offset like in the dump, and even after that, the current consumption increased by 50 milliamps, but I didn't get any console output. I've also tried loading u-boot through imx_loader via uart, but the script doesn't recognize the processor. I've tried searching for the otg pins to flash through imx_loader in usb mode, but the board wasn't detected (possibly due to incorrect pins). I'm in need of assistance to launch the bootloader from the spi nor memory.
u/radibeam — 2 months ago