« Return to Thread: how to run hello world in on-chip ram?
Re: how to run hello world in on-chip ram?
by charlie yang
::
Rate this Message:
Hi,Roboert,
I don't know if the hello.hex is not suit for the altera ram. I use a single
port ram with 4kx32bit. and set the ram.ld as:
MEMORY
{
vectors : ORIGIN = 0x00000000, LENGTH = 0x000000200
ram : ORIGIN = 0x000000200, LENGTH = 0x000000f00 -
0x0000200
}
when initializing the ram, i use the content offset to 0x100 in hello.hex
and cut the no useful information before address 0x100 ,which all is zero.
In simulation, Ithe pc value (equal to wb_ss_adr_i) vs wb_ss_dat_o is:
pc dat_o
0x000 15000000
0x100 9e000000
0x104 9e200000
0x108 9e400000
...
0x11c 9ee00000
0x120 Hiz here cpu will report Starting exception: 7
utill pc run 128, pc will jump to 0x700 ,then 0x704, and will repeat
0x700,0x704 forever. the wb_ss_dat_o value is always 15000000.
what happen to this?
here is my chopped hello.hex:
:2000000015000000150000009C4000009C6000009C8000009CA000009CC
000009CE00000AE
:200020009D0000009D2000009D4000009D6000009D8000009DA000009DC
000009DE0000058
:200040009E0000009E2000009E4000009E6000009E8000009EA000009EC0
00009EE0000030
:200060009F0000009F2000009F4000009F6000009F8000009FA000009FC0
00009FE0000008
:2000800018200000A82135529C40FFFDE021100318400000A8422450440
010009C40000006
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----- Original Message -----
From: Robert Cragie<rcc@j...>
To:
Date: Tue Nov 20 12:27:57 CET 2007
Subject: [openrisc] how to run hello world in on-chip ram?
> It seems like you're not initialising your on chip RAM correctly,
> or it is
> not configured correctly in your design as you'd expect to see
> 0x15000000
> (l.nop) on the memory bus as it starts running. Are you offsetting
> by 0x100
> correctly? Also, I'm not sure what SDRAM_BASE_ADDR points to either
> - you
> may want to remove that part.
> Robert Cragie, Design Engineer
>_____________________________________________________________
__
> Jennic Ltd, Furnival Street, Sheffield, S1 4QT, UK
> http://www.jennic.com Tel: +44 (0) 114 281 2655
>
_____________________________________________________________
__
> > -----Original Message-----
> > From: charlie yang [mailto:ydt at ustc.edu]
> > Sent: 20 November 2007 10:35
> > To: rcc at jennic.com; openrisc at opencores.org
> > Subject: Re: [openrisc] how to run hello world in on-chip ram?
> >
> >
> > Thanks Robert.
> >
> > I use the or1k/hello-uart as my example. use
> or32-uclinux-objcopy to
> >
> > get a hello.hex and initialize the on-chip ram. When use
> modelsim to do
> >
> > rtl simulation, I find the on-chip ram input
> address(wb_ss_adr_i) repeat
> >
> > like 0x100,0x000,0x104,0x00,0x100,0x000,0x104,0x000. and the
> ouput
> >
> > data (wb_ss_dat_o) is always zero.
> >
> >
> >
> > In the hello-uart, there is no FLASH,no Memory controller and
> no
> >
> > cache. I don't know if my reset.S is incorrect or hex files is
> incorrect.
> >
> > Please give me some hints. Thanks!
> >
> >
> >
> > Here is my reset.S in hello-uart directory:
> >
> > .global ___main
> >
> > .section .stack /*, "aw", @nobits*/
> >
> > .space STACK_SIZE
> >
> > _stack:
> >
> >
> >
> > .section .vectors, "ax"
> >
> > .org 0x100
> >
> >
> >
> > _reset_vector:
> >
> > l.nop
> >
> > l.nop
> >
> > l.addi r2,r0,0x0
> >
> > l.addi r3,r0,0x0
> >
> > l.addi r4,r0,0x0
> >
> > l.addi r5,r0,0x0
> >
> > l.addi r6,r0,0x0
> >
> > l.addi r7,r0,0x0
> >
> > l.addi r8,r0,0x0
> >
> > l.addi r9,r0,0x0
> >
> > l.addi r10,r0,0x0
> >
> > l.addi r11,r0,0x0
> >
> > l.addi r12,r0,0x0
> >
> > l.addi r13,r0,0x0
> >
> > l.addi r14,r0,0x0
> >
> > l.addi r15,r0,0x0
> >
> > l.addi r16,r0,0x0
> >
> > l.addi r17,r0,0x0
> >
> > l.addi r18,r0,0x0
> >
> > l.addi r19,r0,0x0 > > l.addi r20,r0,0x0 > > l.addi
> r21,r0,0x0 > > l.addi r22,r0,0x0 > > l.addi r23,r0,0x0
> > > l.addi r24,r0,0x0 > > l.addi r25,r0,0x0 > >
> l.addi r26,r0,0x0 > > l.addi r27,r0,0x0 > > l.addi
> r28,r0,0x0 > > l.addi r29,r0,0x0 > > l.addi r30,r0,0x0
> > > l.addi r31,r0,0x0 > > > > l.movhi
> r3,hi(SDRAM_BASE_ADDR) > > l.ori r3,r3,lo(SDRAM_BASE_ADDR)
> > > l.addi r5,r0,0x00 > > l.sw 0(r3),r5 > >
> l.movhi r3,hi(_start) > > l.ori r3,r3,lo(_start) > >
> l.jr r3 > > l.nop > > .section .text > > >
> > _start: > > l.movhi r1,hi(_stack-4) > > l.ori
> r1,r1,lo(_stack-4) > > l.addi r2,r0,-3 > > l.and
> r1,r1,r2 > > > > l.movhi r2,hi(_main) > > l.ori
> r2,r2,lo(_main) > > l.jr r2 > > l.nop > > >
> > ___main: > > l.jr r9 > > l.nop > > >
> > Then I use the following step to generate hex file: > >
> or32-uclinux-gcc -g -c -o reset.o reset.S > > or32-uclinux-ld
> -Tram.ld -o hello.or32 reset.o hello.o > >
> or32-uclinux-objcopy -O binary hello.or32 hello.bin > >
> or32-uclinux-objcopy -S -O ihex hello.or32 hello.hex > > >
> > > > ----- Original Message ----- > > From: Robert
> Cragie<rcc at j...> > > To: > > Date: Mon Nov 19
> 09:24:52 CET 2007 > > Subject: [openrisc] how to run hello
> world in on-chip ram? > > > > > 1) The CPU always
> vectors to 0x100 on reset so you will either need > > >
> some > > > sort of bootstrap there or you will have to map
> RAM which you can > > > download > > > to there.
> > > > 2) You can always get to intelhex from the ELF file
> using: > > > or32-uclinux-objcopy -S -O ihex
> <ELFfile> <ihexfile> > > > Robert Cragie,
> Design Engineer > > > > >
>_____________________________________________________________
>
> > __ > > > Jennic Ltd, Furnival Street, Sheffield, S1
> 4QT, UK > > > http://www.jennic.com Tel: +44 (0) 114 281
> 2655 > > > > >
>
_____________________________________________________________
>
> > __ > > > > -----Original Message----- > >
> > > From: openrisc-bounces at opencores.org > > >
> > [mailto:openrisc-bounces at opencores.org]On Behalf Of charlie
> > > > yang > > > > Sent: 19 November 2007
> 04:17 > > > > To: openrisc at opencores.org > >
> > > Subject: [openrisc] how to run hello world in on-chip
> ram? > > > > > > > > > > > > hi
> all, > > > > I have a altera FPGA board with Cyclone II
> EP2c35 and > > > synthesize the > > > >
> orp_soc following the hardware tutorials. I have only one > >
> > dedicated > > > > JTAG for FPGA and have no pins
> for or1k CPU. So I want to burn > > > > the "hello
> world" program into on-chip ram by > > > initializing
> this memory, > > > > that is, let the JTAG download the
> all the CPU and program . > > > > so there are two
> questions for help: > > > > 1) how to set start pointer
> of the reset.S and let the > > > "hello > >
> > > world" run. > > > > 2) I find the
> hello.hex in or1k is incompatible with Intel hex > > >
> > format of > > > > altera memory. how can I convert
> it to altera memory format? > > > > > > > >
> Is there anybody using altera FPGA? Please give me some > >
> > directions . > > > > Thanks a lot ! > > >
> > _______________________________________________ > > >
> > http://www.opencores.org/mailman/listinfo/openrisc > >
> > > > >
>_______________________________________________
http://www.opencores.org/mailman/listinfo/openrisc
I don't know if the hello.hex is not suit for the altera ram. I use a single
port ram with 4kx32bit. and set the ram.ld as:
MEMORY
{
vectors : ORIGIN = 0x00000000, LENGTH = 0x000000200
ram : ORIGIN = 0x000000200, LENGTH = 0x000000f00 -
0x0000200
}
when initializing the ram, i use the content offset to 0x100 in hello.hex
and cut the no useful information before address 0x100 ,which all is zero.
In simulation, Ithe pc value (equal to wb_ss_adr_i) vs wb_ss_dat_o is:
pc dat_o
0x000 15000000
0x100 9e000000
0x104 9e200000
0x108 9e400000
...
0x11c 9ee00000
0x120 Hiz here cpu will report Starting exception: 7
utill pc run 128, pc will jump to 0x700 ,then 0x704, and will repeat
0x700,0x704 forever. the wb_ss_dat_o value is always 15000000.
what happen to this?
here is my chopped hello.hex:
:2000000015000000150000009C4000009C6000009C8000009CA000009CC
000009CE00000AE
:200020009D0000009D2000009D4000009D6000009D8000009DA000009DC
000009DE0000058
:200040009E0000009E2000009E4000009E6000009E8000009EA000009EC0
00009EE0000030
:200060009F0000009F2000009F4000009F6000009F8000009FA000009FC0
00009FE0000008
:2000800018200000A82135529C40FFFDE021100318400000A8422450440
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----- Original Message -----
From: Robert Cragie<rcc@j...>
To:
Date: Tue Nov 20 12:27:57 CET 2007
Subject: [openrisc] how to run hello world in on-chip ram?
> It seems like you're not initialising your on chip RAM correctly,
> or it is
> not configured correctly in your design as you'd expect to see
> 0x15000000
> (l.nop) on the memory bus as it starts running. Are you offsetting
> by 0x100
> correctly? Also, I'm not sure what SDRAM_BASE_ADDR points to either
> - you
> may want to remove that part.
> Robert Cragie, Design Engineer
>
__
> Jennic Ltd, Furnival Street, Sheffield, S1 4QT, UK
> http://www.jennic.com Tel: +44 (0) 114 281 2655
>
_____________________________________________________________
__
> > -----Original Message-----
> > From: charlie yang [mailto:ydt at ustc.edu]
> > Sent: 20 November 2007 10:35
> > To: rcc at jennic.com; openrisc at opencores.org
> > Subject: Re: [openrisc] how to run hello world in on-chip ram?
> >
> >
> > Thanks Robert.
> >
> > I use the or1k/hello-uart as my example. use
> or32-uclinux-objcopy to
> >
> > get a hello.hex and initialize the on-chip ram. When use
> modelsim to do
> >
> > rtl simulation, I find the on-chip ram input
> address(wb_ss_adr_i) repeat
> >
> > like 0x100,0x000,0x104,0x00,0x100,0x000,0x104,0x000. and the
> ouput
> >
> > data (wb_ss_dat_o) is always zero.
> >
> >
> >
> > In the hello-uart, there is no FLASH,no Memory controller and
> no
> >
> > cache. I don't know if my reset.S is incorrect or hex files is
> incorrect.
> >
> > Please give me some hints. Thanks!
> >
> >
> >
> > Here is my reset.S in hello-uart directory:
> >
> > .global ___main
> >
> > .section .stack /*, "aw", @nobits*/
> >
> > .space STACK_SIZE
> >
> > _stack:
> >
> >
> >
> > .section .vectors, "ax"
> >
> > .org 0x100
> >
> >
> >
> > _reset_vector:
> >
> > l.nop
> >
> > l.nop
> >
> > l.addi r2,r0,0x0
> >
> > l.addi r3,r0,0x0
> >
> > l.addi r4,r0,0x0
> >
> > l.addi r5,r0,0x0
> >
> > l.addi r6,r0,0x0
> >
> > l.addi r7,r0,0x0
> >
> > l.addi r8,r0,0x0
> >
> > l.addi r9,r0,0x0
> >
> > l.addi r10,r0,0x0
> >
> > l.addi r11,r0,0x0
> >
> > l.addi r12,r0,0x0
> >
> > l.addi r13,r0,0x0
> >
> > l.addi r14,r0,0x0
> >
> > l.addi r15,r0,0x0
> >
> > l.addi r16,r0,0x0
> >
> > l.addi r17,r0,0x0
> >
> > l.addi r18,r0,0x0
> >
> > l.addi r19,r0,0x0 > > l.addi r20,r0,0x0 > > l.addi
> r21,r0,0x0 > > l.addi r22,r0,0x0 > > l.addi r23,r0,0x0
> > > l.addi r24,r0,0x0 > > l.addi r25,r0,0x0 > >
> l.addi r26,r0,0x0 > > l.addi r27,r0,0x0 > > l.addi
> r28,r0,0x0 > > l.addi r29,r0,0x0 > > l.addi r30,r0,0x0
> > > l.addi r31,r0,0x0 > > > > l.movhi
> r3,hi(SDRAM_BASE_ADDR) > > l.ori r3,r3,lo(SDRAM_BASE_ADDR)
> > > l.addi r5,r0,0x00 > > l.sw 0(r3),r5 > >
> l.movhi r3,hi(_start) > > l.ori r3,r3,lo(_start) > >
> l.jr r3 > > l.nop > > .section .text > > >
> > _start: > > l.movhi r1,hi(_stack-4) > > l.ori
> r1,r1,lo(_stack-4) > > l.addi r2,r0,-3 > > l.and
> r1,r1,r2 > > > > l.movhi r2,hi(_main) > > l.ori
> r2,r2,lo(_main) > > l.jr r2 > > l.nop > > >
> > ___main: > > l.jr r9 > > l.nop > > >
> > Then I use the following step to generate hex file: > >
> or32-uclinux-gcc -g -c -o reset.o reset.S > > or32-uclinux-ld
> -Tram.ld -o hello.or32 reset.o hello.o > >
> or32-uclinux-objcopy -O binary hello.or32 hello.bin > >
> or32-uclinux-objcopy -S -O ihex hello.or32 hello.hex > > >
> > > > ----- Original Message ----- > > From: Robert
> Cragie<rcc at j...> > > To: > > Date: Mon Nov 19
> 09:24:52 CET 2007 > > Subject: [openrisc] how to run hello
> world in on-chip ram? > > > > > 1) The CPU always
> vectors to 0x100 on reset so you will either need > > >
> some > > > sort of bootstrap there or you will have to map
> RAM which you can > > > download > > > to there.
> > > > 2) You can always get to intelhex from the ELF file
> using: > > > or32-uclinux-objcopy -S -O ihex
> <ELFfile> <ihexfile> > > > Robert Cragie,
> Design Engineer > > > > >
>
>
> > __ > > > Jennic Ltd, Furnival Street, Sheffield, S1
> 4QT, UK > > > http://www.jennic.com Tel: +44 (0) 114 281
> 2655 > > > > >
>
_____________________________________________________________
>
> > __ > > > > -----Original Message----- > >
> > > From: openrisc-bounces at opencores.org > > >
> > [mailto:openrisc-bounces at opencores.org]On Behalf Of charlie
> > > > yang > > > > Sent: 19 November 2007
> 04:17 > > > > To: openrisc at opencores.org > >
> > > Subject: [openrisc] how to run hello world in on-chip
> ram? > > > > > > > > > > > > hi
> all, > > > > I have a altera FPGA board with Cyclone II
> EP2c35 and > > > synthesize the > > > >
> orp_soc following the hardware tutorials. I have only one > >
> > dedicated > > > > JTAG for FPGA and have no pins
> for or1k CPU. So I want to burn > > > > the "hello
> world" program into on-chip ram by > > > initializing
> this memory, > > > > that is, let the JTAG download the
> all the CPU and program . > > > > so there are two
> questions for help: > > > > 1) how to set start pointer
> of the reset.S and let the > > > "hello > >
> > > world" run. > > > > 2) I find the
> hello.hex in or1k is incompatible with Intel hex > > >
> > format of > > > > altera memory. how can I convert
> it to altera memory format? > > > > > > > >
> Is there anybody using altera FPGA? Please give me some > >
> > directions . > > > > Thanks a lot ! > > >
> > _______________________________________________ > > >
> > http://www.opencores.org/mailman/listinfo/openrisc > >
> > > > >
>
http://www.opencores.org/mailman/listinfo/openrisc
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