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Altera_Forum's avatar
Altera_Forum
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11 years ago

DS-5 debugger "run" or "start" option lead HPS to reset

Hi, I have 2 boards with Cyclone V SoC. One is the Arrow SoCkit and the other is our custom one. There are DDR3 SDRAM installed in Arrow and LPDDR2 SDRAM installed in custom board. I've made prelo...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

It seems to me I've fixed this issue :)

The pitfall is linker script: *.ld. The default linker script by Altera from Quartus directory assumed there are 1024 Mb of memory installed on the board. But there are only 512 in our custom board so debugger probably doesn't allow to start application which was linked for 1Gb SDRAM. I've customized linker script for myself: 

MEMORY
{
  boot_rom (rx) : ORIGIN = 0xfffd0000, LENGTH = 64K
  oc_ram (rwx) : ORIGIN = 0xffff0000, LENGTH = 64K
  /* Need to have 64bytes available before start of program, to store the mkimage header */
  ram (rwx) : ORIGIN = 0x100000 + 0x40, LENGTH = 511M - 0x40
}

and it starts work! The real problem is that it's not obvious at all. Maybe for ARM guru, but not for RTL designer! The lack of programming documentation gathered in UG is the major issue I think...