µCLinux in Stratix GX Development Board

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originally posted by macio@May 24 2006, 10:53 PM

hi,

i have build hardware for stratix gx development board without any error, but now i have problem with building uclinux kernel. when i try to generate system.h

# generate nios2_system.h from ptf
make arch=nios2nommu cross_compile=nios2-linux-uclibc- hwselect sysptf=stratixgx.ptf

it detects that i have 0 bytes ddr_sdram

--- please select a device to execute kernel from:
(1) ddr_sdram
        class: ddr_sdram_component
        size: 0 bytes

sopc builder system consists of nios2 cpu, ddr sdram controller (base address 0x00000000, end address 0x07ffffff == 128mb ??), uart, jtag uart, timer, sysid, avalon tri state bridge and dummy cfi flash (not connected to any fpga pin). can anybody help me?

best regards,

maciek

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I had similar problem before.

Your ddr core avalon data bus width is greater than 32 bits, and the hwselect script can&#39;t handle.

Please edit the ptf for hwselect only (not for hardware generation), reduce data bus width to 32 bits, and increase address bus width (up to the ddr memory capacity) .