uClinux 20100621 - conneting NIOS HW with linux

Hi,

I am trying to import/use uClinux on NIOS on the DE2-70 Board. I see by your comment that you have already done this.

Could you please help me regarding this.

Thanks,

Baishun

--- Quote Start ---

Hi

I can not connect NIOS hardware with uClinux kernel. I successfully did it when uClinux support make vendor_hwselect. But when I have to build my custom header file with command sopc-create-header-files --single my_nios2_fpga.h I dont't know where exactly put it and how to configure make menuconfig.

This is happen with new kernel like 20100621

--- Quote End ---

Hi Texblues,

this is strange, because I also made the step with "make vendor_hwselect ..." on the distribution 20100621. I use the "test-nios2" branch for the nommu version.

But if the mmu version really needs this step I think you have to put your "my_nios2_fpga.h" into the folder "linux-2.6x/arch/nios/include/asm" or something similiar.

@baishunwu:

It is better to open a new to topic and then tell us what steps you already made on getting uClinux to work. By the way the alterawiki has many sections about getting it started.

Urmel

--- Quote Start ---

But when I have to build my custom header file with command sopc-create-header-files --single my_nios2_fpga.h I dont't know where exactly put it and how to configure make menuconfig.

--- Quote End ---

I you are using the mmu version, take a look on the steps

http://www.alterawiki.com/wiki/creating_a_nios_ii_design_with_an_mmu

about adding the files, copying the folders in arch/nios2/ and so on

Yes. all the things what I do, I do from this website.

I added new board by copying 3c120 to 2c35. Changed Kconfig and Makefile in boards(adding few lines to my new 2c35 board). Changed Kconfig in 2c35 folder. For one try I did not changed 2c35/include/asm for my board and leaved it without change.

I leave number 2 from the tut: 2. add a new board to uClinux-dist using nios2 as a template. Beaceuse I think this is not usefull.

I tried compile kernel with my "new" board 2c35(which is old actually) and success.

Now I want to change parameters for my real board 2c35. And i changed nios.h:

# ifndef _ASM_NIOS2_H__

# define _ASM_NIOS2_H__

# if defined(CONFIG_NIOS2_MMU)

# include <asm/default_mmu.h>

/* Added compability mode with macro names from "old" design...

* FIXME: we should really fix drivers instead. but this makes it

* easier to switch between old and new design...

*/

//#define CONFIG_ALTERA_CYCLONE_III

# define DDR2_TOP_BASE DDR_SDRAM_BASE

# define DDR2_TOP_SPAN DDR_SDRAM_SPAN

# define EXT_FLASH_BASE FLASH_BASE

# define EXT_FLASH_SPAN FLASH_SPAN

# define TIMER_1MS_FREQ SYS_CLK_TIMER_FREQ

# define TIMER_1MS_BASE SYS_CLK_TIMER_BASE

# define TIMER_1MS_SPAN SYS_CLK_TIMER_SPAN

# define TIMER_1MS_IRQ SYS_CLK_TIMER_IRQ

//#define GPIO_LED1 0

DDR_SDRAM, FLASH, SYS_CLK_TIMER - those are my names in nios sopc. I dont have yet GPIO so I comment define GPIO_LED1 0. Actually I dont know what for it is.

I generated: sopc-create-header-files --single default_mmu.h and copied it to 2c35/include/asm overwriting the old one.

Now in uClinux-dist: make menuconfig (I set: Altera, nios2. In kernel selection: default all settings nad customize kernel settings)

I get:

*

* Restart config...

*

*

* NiosII board configuration

*

board configuration

> 1. 3C120 dev board (3C120)

2. 2C35 dev board (2C35) (NEW)

3. Nios Embedded Evaluation Kit (NEEK)

choice[1-3]: 2

And now: make

I get errors like

/util/Altera_soft/workspace/nios2-linux/linux-2.6/arch/nios2/boards/2c35/config.c:87: error: 'USER_LED_PIO_8OUT_BASE' undeclared here (not in a function)

/util/Altera_soft/workspace/nios2-linux/linux-2.6/arch/nios2/boards/2c35/config.c:88: error: 'USER_DIPSW_PIO_8IN_BASE' undeclared here (not in a function)

/util/Altera_soft/workspace/nios2-linux/linux-2.6/arch/nios2/boards/2c35/config.c:89: error: 'USER_PB_PIO_4IN_BASE' undeclared here (not in a function)

/util/Altera_soft/workspace/nios2-linux/linux-2.6/arch/nios2/boards/2c35/config.c:108: error: 'GPIO_LED1' undeclared here (not in a function)

/util/Altera_soft/workspace/nios2-linux/linux-2.6/arch/nios2/boards/2c35/config.c:108: error: initializer element is not constant

/util/Altera_soft/workspace/nios2-linux/linux-2.6/arch/nios2/boards/2c35/config.c:108: error: (near initialization for 'nios2_led_pins[0].gpio')

/util/Altera_soft/workspace/nios2-linux/linux-2.6/arch/nios2/boards/2c35/config.c:1157: error: 'TSE_MAC_BASE' undeclared here (not in a function)

/util/Altera_soft/workspace/nios2-linux/linux-2.6/arch/nios2/boards/2c35/config.c:1157: error: initializer element is not constant

/util/Altera_soft/workspace/nios2-linux/linux-2.6/arch/nios2/boards/2c35/config.c:1157: error: (near initialization for 'alt_tse_resource[0].start')

/util/Altera_soft/workspace/nios2-linux/linux-2.6/arch/nios2/boards/2c35/config.c:1158: error: initializer element is not constant

/util/Altera_soft/workspace/nios2-linux/linux-2.6/arch/nios2/boards/2c35/config.c:1158: error: (near initialization for 'alt_tse_resource[0].end')

/util/Altera_soft/workspace/nios2-linux/linux-2.6/arch/nios2/boards/2c35/config.c:1163: error: 'SGDMA_RX_BASE' undeclared here (not in a function)

/util/Altera_soft/workspace/nios2-linux/linux-2.6/arch/nios2/boards/2c35/config.c:1163: error: initializer element is not constant

/util/Altera_soft/workspace/nios2-linux/linux-2.6/arch/nios2/boards/2c35/config.c:1163: error: (near initialization for 'alt_tse_resource[1].start')

/util/Altera_soft/workspace/nios2-linux/linux-2.6/arch/nios2/boards/2c35/config.c:1164: error: initializer element is not constant

/util/Altera_soft/workspace/nios2-linux/linux-2.6/arch/nios2/boards/2c35/config.c:1164: error: (near initialization for 'alt_tse_resource[1].end')

/util/Altera_soft/workspace/nios2-linux/linux-2.6/arch/nios2/boards/2c35/config.c:1169: error: 'SGDMA_TX_BASE' undeclared here (not in a function)

I think the problem is in config.c but how to change it to my nios?

have you tried giving a make menuconfig and go down to the devices deselecting the Altera Triple Speed Ethernet and leds?

I had some problems with the GPIO, I found the selection for it in the menuconfig under Customize Kernel settings > Linux/NiosII Configuration > Additional NiosII Device Drivers.

Not sure this helps you.

Yes it helped. Now I have less error like:

/util/Altera_soft/workspace/nios2-linux/linux-2.6/arch/nios2/boards/2c35/config.c:1157: error: 'TSE_MAC_BASE' undeclared here (not in a function)

/util/Altera_soft/workspace/nios2-linux/linux-2.6/arch/nios2/boards/2c35/config.c:1163: error: 'SGDMA_RX_BASE' undeclared here (not in a function)

/util/Altera_soft/workspace/nios2-linux/linux-2.6/arch/nios2/boards/2c35/config.c:1169: error: 'SGDMA_TX_BASE' undeclared here (not in a function)

/util/Altera_soft/workspace/nios2-linux/linux-2.6/arch/nios2/boards/2c35/config.c:1175: error: 'SGDMA_RX_IRQ' undeclared here (not in a function)

/util/Altera_soft/workspace/nios2-linux/linux-2.6/arch/nios2/boards/2c35/config.c:1181: error: 'SGDMA_TX_IRQ' undeclared here (not in a function)

Where can I switch it off?

Do you want networking/ethernet in your system? If so, then you'll have to resolve this. If not, then I think you can safely remove and/or switch these flags off. Just make sure you've also disabled the TSE (and related) in make menuconfig.

Cheers,

slacker

guess!

Take a tour in kernel configuration > device drivers> Network device support> Ethernet (1000)

Check also the other ethernet options.

Found it and switched off. Now compilation ends with success. Unfortunataly I get error while downloading Image:(

nios2-download -g images/zImage

Using cable "USB-Blaster [USB 1-1.3.3]", device 1, instance 0x00

Pausing target processor: not responding.

Resetting and trying again: OK

Initializing CPU cache (if present)

OK

Downloaded 3529KB in 20.7s (170.4KB/s)

Verifying C1800000 ( 0%)

Verify failed between address 0xC1800000 and 0xC180FFFF

Leaving target processor paused

http://aix.vot.pl/nios/nios_config.jpeg

http://aix.vot.pl/nios/cpu.jpeg

MMU setting are default

When I run on the same project uClinux but cpu without MMU and dual port onchip memory I run uClinux with success.

Information about the system from .h file:

# define CPU_IMPLEMENTATION "fast"

# define BIG_ENDIAN 0

# define CPU_FREQ 50000000

# define ICACHE_LINE_SIZE 32

# define ICACHE_LINE_SIZE_LOG2 5

# define ICACHE_SIZE 4096

# define DCACHE_LINE_SIZE 32

# define DCACHE_LINE_SIZE_LOG2 5

# define DCACHE_SIZE 2048

# define INITDA_SUPPORTED

# define FLUSHDA_SUPPORTED

# define HAS_JMPI_INSTRUCTION

# define MMU_PRESENT

# define KERNEL_REGION_BASE 0xc0000000

# define IO_REGION_BASE 0xe0000000

# define KERNEL_MMU_REGION_BASE 0x80000000

# define USER_REGION_BASE 0x0

# define PROCESS_ID_NUM_BITS 8

# define TLB_NUM_WAYS 16

# define TLB_NUM_WAYS_LOG2 4

# define TLB_PTR_SZ 7

# define TLB_NUM_ENTRIES 128

# define FAST_TLB_MISS_EXCEPTION_ADDR 0xc1800000

# define EXCEPTION_ADDR 0xc0800020

# define RESET_ADDR 0xc0800000

# define BREAK_ADDR 0xc1804820

# define HAS_DEBUG_STUB

# define HAS_DEBUG_CORE 1

# define HAS_ILLEGAL_INSTRUCTION_EXCEPTION

# define HAS_ILLEGAL_MEMORY_ACCESS_EXCEPTION

# define HAS_EXTRA_EXCEPTION_INFO

# define CPU_ID_SIZE 1

# define CPU_ID_VALUE 0x0

# define HARDWARE_DIVIDE_PRESENT 0

# define HARDWARE_MULTIPLY_PRESENT 1

# define HARDWARE_MULX_PRESENT 0

# define INST_ADDR_WIDTH 25

# define DATA_ADDR_WIDTH 25

# define NUM_OF_SHADOW_REG_SETS 0