Re: [openrisc] Is the or1ksim not able to the mem_ctrl power-on boot?

[Simon Srot <simons@opencores.org>]

Hi,

There is more easy way to boot uclinux on or1ksim without using gdb. It
is described in README.or32.
If you want to use gdb, note that there might be some problems using it
with or1ksim.

Simon

Zhangyong wrote:
> 
> Hi
> 
>  I want to sim the boot of uClinux-2.0.x kernel "linux",
> so I open two terminal, start the sim in termial 1, and start gdb
> in terminal 2. Like:
> 
>      terminal 1:
>      # or32-uclinux-sim
>      ...
> 
>      terminal 2:
>      # or32-uclinux-gdb linux
>      ...
>      (gdb) target jtag jtag://localhost:9999
>      ...
>      (gdb) load
>      ...
>      (gdb) set $pc=0x100
>      (gdb) stepi
>      0x104 in __ramvec_start ()
>      (gdb) stepi
>      0x108 in __ramvec_start ()
>      (gdb)
> 
> Some configure in the sim.cfg is:
> 
>      section memory
>        pattern = 0x00
>        type = pattern
>        nmemories = 2
> 
>        device 0
>          name = "FLASH"
>          ce = 0
>          baseaddr = 0xf0000000
>          size = 0x00800000
>          delayr = 1
>          delayw = 2
>        enddevice
> 
>        device 1
>          name = "SDRAM"
>          ce = 1
>          baseaddr = 0x00000000
>          size = 0x00800000
>          delayr = 1
>          delayw = -1
>        enddevice
>      end
>      ...
>      ...
>      section mc
>        enabled = 1
>        baseaddr = 0x93000000
>        POC = 0x00000000                 /* Disable Power-On Boot */
>      end
>      ...
> 
>  My question is:
>      In the sim.cfg I disable the MC Power-On Boot, but the or1ksim can boot the
> uClinux romkernel when gdb it. Why?
>      Is the or1ksim not able to the mem_ctrl power-on boot?
> 
>  Tanks for any answer!
> 
>  Thx!
> 
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