Minimal MMU linux hangs on DE1 board

Thanks hippo. Using that option and trimming a lot more I finally managed to boot MMU with only 8 MB SDRAM. Unfortunately the system is almost unusable as, even with functionalities keep to a minimum, remains really short on RAM and apps sometimes fire oom-killer.

[mcesar@mcesarpc4114c uClinux-dist]$ nios2-terminal

nios2-terminal: connected to hardware target using JTAG UART on cable

nios2-terminal: "USB-Blaster [USB 6-1.1]", device 1, instance 0

nios2-terminal: (Use the IDE stop button or Ctrl-C to terminate)

Uncompressing Linux... Ok, booting the kernel.

Linux version 2.6.34-00693-ga32ca88-dirty () (gcc version 4.1.2)# 300 PREEMPT Tue Jul 6 20:28:07 CEST 2010

bootconsole [early0] enabled

early_console initialized at 0xe1001420

Linux/Nios II-MMU

init_bootmem_node(?,0x101c9, 0x10000, 0x10800)

free_bootmem(0x101c9000, 0x637000)

reserve_bootmem(0x101c9000, 0x100)

Built 1 zonelists in Zone order, mobility grouping off. Total pages: 2032

Kernel command line:

PID hash table entries: 32 (order: -5, 128 bytes)

Dentry cache hash table entries: 1024 (order: 0, 4096 bytes)

Inode-cache hash table entries: 1024 (order: 0, 4096 bytes)

We have 67584 pages of RAM

Memory available: 6276k/1825k RAM, 0k/0k ROM (904k kernel code, 920k data)

NR_IRQS:32

Calibrating delay loop... 49.35 BogoMIPS (lpj=246784)

Mount-cache hash table entries: 512

init_BSP(): registering device resources

Switching to clocksource timer

ttyJ0 at MMIO 0x1001420 (irq = 1) is a Altera JTAG UART

console [ttyJ0] enabled, bootconsole disabled

console [ttyJ0] enabled, bootconsole disabled

Freeing unused kernel memory: 772k freed (0xd00e3000 - 0xd01a3000)

devpts: called with bogus options

ifconfig: socket: Function not implemented

Welcome to

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For further information check:

BusyBox v1.16.2 (2010-07-06 20:15:46 CEST) hush - the humble shell

/# free

total used free shared buffers

Mem: 7048 2876 4172 0 0

Swap: 0 0 0

Total: 7048 2876 4172

/#