manrix-devel

[Manrix-devel] manrix boot on Intel x86

[Shakthi K. <gen...@ya...>]

Greetings!

I need some help on booting manrix on Intel x86 P4
system.

1. I downloaded manrix from:

http://manrix.sf.net/code/ManRiX.tar.gz

2. Extracted it and did make inside mickernel, servers
(busmngr, console, fs-io, miscio), soft (libc, cmd,
logd, ...) (The mount somehow failed as I didn't do it
as root, and I didn't want to use setup.sh either).
Using gcc-3.2.3.

3. I created a /boot/manrix directory and copied
conmngr, fsiomngr, init, kern, ls and msiciomngr to
it.

4. Updated my /boot/grub/menu.lst as follows:

title Red Hat Enterprise Linux WS (2.4.21-4.EL)
	root (hd0,1)
	kernel /boot/vmlinuz-2.4.21-4.EL ro root=LABEL=/
	initrd /boot/initrd-2.4.21-4.EL.img

title ManRiX OS
	root (hd0,1)
	kernel /boot/manrix/kern
	module /boot/manrix/conmngr
	module /boot/manrix/fsiomngr 2
	module /boot/manrix/init
	module /boot/manrix/misciomngr
	module /boot/manrix/ls

5. When I choose manrix on boot on grub, I get this
output and it stops there:

Booting 'ManRiX OS'
root (hd0,1)
Filesystem type is ext2fs, partition type 0x83
kernel /boot/manrix/kern
  [Multiboot-elf, <0x100000:0xad1c:0x0>,
<0x10b000:0x2aa4:0x1a20>, shtab:0x1101e0,
entry=0x100000]
module /boot/manrix/conmngr 
  [Multiboot module @ 0x114000, 0xc4b5 bytes]
ManRix Microkernel Loaded as '/boot/manrix/kern'.
Total Memory: 516032k@0x121000, 0x1081f bytes]
get_page (); get_page used before memory
initialization
  [Multiboot module @ 0x132000, 0xb017 bytes]
module /boot/manrix/misciomngr
  [Multiboot module @ 0x13e000, 0xc1f7 bytes]
module /boot/manrix/ls
  [Multiboot module @ 0x14b000, 0x9ccc bytes]

What is the output that I should get? Do I need to get
a console? 

Can anyone tell me as to what I am doing wrong and how
I can get manrix booted?

Thanks,

SK

--
Shakthi Kannan, MS
Software Engineer, Specsoft (Hexaware Technologies)
[E]: gen...@ya...          [M]: (91) 98407-87007
[W]: http://www.shakthimaan.com      [L]: Chennai, India


		
__________________________________ 
Yahoo! Mail - PC Magazine Editors' Choice 2005 
http://mail.yahoo.com

Re: [Manrix-devel] manrix boot on Intel x86

[Manish R. <reg...@gm...>]

On 9/15/05, Shakthi Kannan <gen...@ya...> wrote:=20
>=20
> Greetings!
>=20
> I need some help on booting manrix on Intel x86 P4
> system.
>=20
> 1. I downloaded manrix from:
>=20
> http://manrix.sf.net/code/ManRiX.tar.gz
>=20
> 2. Extracted it and did make inside mickernel, servers
> (busmngr, console, fs-io, miscio), soft (libc, cmd,
> logd, ...) (The mount somehow failed as I didn't do it
> as root, and I didn't want to use setup.sh either).
> Using gcc-3.2.3.
>=20
> 3. I created a /boot/manrix directory and copied
> conmngr, fsiomngr, init, kern, ls and msiciomngr to
> it.
>=20
> 4. Updated my /boot/grub/menu.lst as follows:
>=20
> title Red Hat Enterprise Linux WS (2.4.21-4.EL)
> root (hd0,1)
> kernel /boot/vmlinuz-2.4.21-4.EL ro root=3DLABEL=3D/
> initrd /boot/initrd-2.4.21-4.EL.img
>=20
> title ManRiX OS
> root (hd0,1)
> kernel /boot/manrix/kern
> module /boot/manrix/conmngr
> module /boot/manrix/fsiomngr 2
> module /boot/manrix/init
> module /boot/manrix/misciomngr
> module /boot/manrix/ls

  Everything is ok upto here. Except that you need not load 'ls'. init=20
executes sh (a very simple shell) and from there you can execute through=20
command prompt.
 As the matter of fact, the project is still in the primitive stage and=20
contails zillions of bugs. :)=20

5. When I choose manrix on boot on grub, I get this
> output and it stops there:
>=20
> Booting 'ManRiX OS'
> root (hd0,1)
> Filesystem type is ext2fs, partition type 0x83
> kernel /boot/manrix/kern
> [Multiboot-elf, <0x100000:0xad1c:0x0>,
> <0x10b000:0x2aa4:0x1a20>, shtab:0x1101e0,
> entry=3D0x100000]
> module /boot/manrix/conmngr
> [Multiboot module @ 0x114000, 0xc4b5 bytes]
> ManRix Microkernel Loaded as '/boot/manrix/kern'.
> Total Memory: 516032k@0x121000, 0x1081f bytes]
> get_page (); get_page used before memory
> initialization
> [Multiboot module @ 0x132000, 0xb017 bytes]
> module /boot/manrix/misciomngr
> [Multiboot module @ 0x13e000, 0xc1f7 bytes]
> module /boot/manrix/ls
> [Multiboot module @ 0x14b000, 0x9ccc bytes]

 >> get_page (); get_page used before memory initialization
 It seems there is some bug in vm/vmpage.c
I did not expected it to call get_page before that function (may be through=
=20
page fault).
Looks like a bug.
 How much memory do you have?
It seems you have >256 ... 512 perhaps. The page table entry is created for=
=20
Only first 4MB. You system required more than that for page_page.=20

What is the output that I should get? Do I need to get
> a console?
>=20
> Can anyone tell me as to what I am doing wrong and how
> I can get manrix booted?

  It seems the problem is with the code itself. give me time to have a=20
closer look.......
try on 128MB if possible.
 regards
Manish Regmi

Re: [Manrix-devel] manrix boot on Intel x86

[Shakthi K. <gen...@ya...>]

Hi Manish,

Thanks for your reply.

--- Manish Regmi <reg...@gm...> wrote:
>  How much memory do you have?
> It seems you have >256 ... 512 perhaps. 

Yes, 512 MB.

> try on 128MB if possible.

Thanks,

SK

--
Shakthi Kannan, MS
Software Engineer, Specsoft (Hexaware Technologies)
[E]: gen...@ya...          [M]: (91) 98407-87007
[W]: http://www.shakthimaan.com      [L]: Chennai, India


		
__________________________________ 
Yahoo! Mail - PC Magazine Editors' Choice 2005 
http://mail.yahoo.com

Re: [Manrix-devel] manrix boot on Intel x86

[Manish R. <reg...@gm...>]

 Hi,
In manrix, pmap_pre_init() (asm/pmap.c) creates mapping for first 4 MB. The=
=20
first 1 MB is unused. grub loads kernel and modules in 1MB+ and the rest (<=
=20
3MB) is free to use. The rest of the memory cannot be used unless the memor=
y=20
subsystem is initialized properly.=20
ManRiX virtual memory manager keeps information about each page on a=20
structure called "struct page" which is 34 bytes. So just to store per page=
=20
structure the system needs 4.25 MB for 512 MB memory.
Your system tried to use memory >4MB. so, you got page fault. The page faul=
t=20
handler tried to create a mapping but the the memory subsystem was not=20
initialized. so the system paniced and halted.=20

We need to devise a workaround for this issue.
1) create additional mapping according to tatal memory.=20
2) ???
 replace asm/pmap.c: pmap_pre_init() with this and give a second try.
 =20
void pmap_pre_init()
{
extern u8 _text_start[], _end[], _text_end[];
vm_offset_t addr;
int i;
pde_t *pte, *pte2;
pde_t *pde;

kernel_map.pdbr =3D (pde_t *) get_next_frame();

pte =3D (pde_t *) get_next_frame();

pde =3D kernel_map.pdbr;

for(i=3D0 ; i < NTABLES ; i++)
kernel_map.pdbr[i] =3D 0;

/* we initialize one page directory entries only. It is
* enough to hold 4 MB memory.
*/
pde[KTABLE_START] =3D (addr_to_pte((vm_offset_t)pte)) | PAGE_PRESENT |=20
PAGE_RW;

/*
* create mapping for more memory. Needed if the system has more
* physical memory than 256MB. Used for per page structure if it exceeds 4mb=
=20
limit.
*/
if(ending_mem >=3D 0x10000000)
{
pte2 =3D (pde_t *) get_next_frame();
pde[KTABLE_START + 1] =3D (addr_to_pte((vm_offset_t)pte2)) | PAGE_PRESENT |=
=20
PAGE_RW;
}

/* temp mapping only */
pde[0] =3D (addr_to_pte((vm_offset_t)pte)) | PAGE_PRESENT | PAGE_RW ;

for(i =3D 0 ; i < NTABLES ; i++)
{
addr =3D i*PAGE_SIZE ;

if (addr >=3D 0xa0000 && addr <=3D 0xbffff)
pte[i] =3D (addr_to_pte(addr)) | PAGE_PRESENT | PAGE_RW ;

if((addr >=3D (vm_offset_t)_text_start) && (addr <=3D (vm_offset_t)_end))
{
if((addr >=3D (vm_offset_t)_text_start) && (addr <=3D (vm_offset_t)_text_en=
d))
pte[i] =3D (addr_to_pte(addr)) | PAGE_PRESENT|PAGE_RW;

else
pte[i] =3D (addr_to_pte(addr)) | PAGE_PRESENT | PAGE_RW;
}
else if((addr >=3D (vm_offset_t)pte) && (addr <=3D ((vm_offset_t)pte +=20
PAGE_SIZE)))
pte[i] =3D (addr_to_pte(addr)) | PAGE_PRESENT | PAGE_RW ;

else if((addr >=3D (vm_offset_t)pde) && (addr <=3D ((vm_offset_t)pde +=20
PAGE_SIZE)))
pte[i] =3D (addr_to_pte(addr)) | PAGE_PRESENT | PAGE_RW ;

else
pte[i] =3D 0 /*(addr_to_pte(addr)) | PAGE_PRESENT | PAGE_RW */;
}
invlpg((void *)addr);
list_init(&pmap_object.page);
pmap_object.size =3D ending_mem - starting_mem;

}
 Regards=20
Manish Regmi

Re: [Manrix-devel] manrix boot on Intel x86

[Shakthi K. <gen...@ya...>]

Hi,

--- Manish Regmi <reg...@gm...> wrote:
>  replace asm/pmap.c: pmap_pre_init() with this and
> give a second try.
>   
> void pmap_pre_init()
> {
> extern u8 _text_start[], _end[], _text_end[];
> vm_offset_t addr;

I tried this patch. Output is as follows:

Booting 'ManRiX OS'
root (hd0,1)
Filesystem type is ext2fs, partition type 0x83
kernel /boot/manrix/kern
  [Multiboot-elf, <0x100000:0xad1c:0x0>,
<0x10b000:0x2aa4:0x1a20>, shtab:0x1101e0,
entry=0x100000]
module /boot/manrix/conmngr 
  [Multiboot module @ 0x114000, 0xc4b5 bytes]
ManRix Microkernel Loaded as '/boot/manrix/kern'.
Total Memory: 523648k @ 0x122 000, 0x106fb bytes
thr 10c000 CPU Speed 1393867 MHz 16:22:10 17/9/2005
entry 100000 size d000 end 10d000 entry 100000 size
11000 end 111000 entry 100000 size b000 end 10b000
entry 100000 size d000 end 10d00 maintaining 
/boot/manrix conmngr ENTRY returned NULL Sending SEGV
to thread 0 add 63332611db bytes
CS: 1B DS: 23 ES: 23SS:23
EIP: 100025 ESP: DFEFFFC3
EBP: DFEFFFFB EDI: AB8F4109
ESI: 3001F8D0
EAX: FF EBI: 63332605 ECX: 33312035
EDX: AB904809
Dequeuing 14 Sig 0 Exit Called by tid0 pid 0

My grub entry for manrix:

title ManRiX OS
	root (hd0,1)
	kernel /boot/manrix/kern
	module /boot/manrix/conmngr
	module /boot/manrix/fsiomngr 2
	module /boot/manrix/init
	module /boot/manrix/misciomngr

Regards,

SK

--
Shakthi Kannan, MS
Software Engineer, Specsoft (Hexaware Technologies)
[E]: gen...@ya...          [M]: (91) 98407-87007
[W]: http://www.shakthimaan.com      [L]: Chennai, India


		
__________________________________ 
Yahoo! Mail - PC Magazine Editors' Choice 2005 
http://mail.yahoo.com

Re: [Manrix-devel] manrix boot on Intel x86

[Manish R. <reg...@gm...>]

On 9/18/05, Shakthi Kannan <gen...@ya...> wrote:=20
>=20
> root (hd0,1)
> Filesystem type is ext2fs, partition type 0x83
> kernel /boot/manrix/kern
> [Multiboot-elf, <0x100000:0xad1c:0x0>,
> <0x10b000:0x2aa4:0x1a20>, shtab:0x1101e0,
> entry=3D0x100000]
> module /boot/manrix/conmngr
> [Multiboot module @ 0x114000, 0xc4b5 bytes]
> ManRix Microkernel Loaded as '/boot/manrix/kern'.
> Total Memory: 523648k @ 0x122 000, 0x106fb bytes
> thr 10c000 CPU Speed 1393867 MHz 16:22:10 17/9/2005
> entry 100000 size d000 end 10d000 entry 100000 size
> 11000 end 111000 entry 100000 size b000 end 10b000
> entry 100000 size d000 end 10d00 maintaining
> /boot/manrix conmngr ENTRY returned NULL Sending SEGV
> to thread 0 add 63332611db bytes
> CS: 1B DS: 23 ES: 23SS:23
> EIP: 100025 ESP: DFEFFFC3
> EBP: DFEFFFFB EDI: AB8F4109
> ESI: 3001F8D0
> EAX: FF EBI: 63332605 ECX: 33312035
> EDX: AB904809
> Dequeuing 14 Sig 0 Exit Called by tid0 pid 0
>=20
> My grub entry for manrix:
>=20
> title ManRiX OS
> root (hd0,1)
> kernel /boot/manrix/kern
> module /boot/manrix/conmngr
> module /boot/manrix/fsiomngr 2
> module /boot/manrix/init
> module /boot/manrix/misciomngr

  try removing misciomngr.=20
 I will post latest codes in a day.
 A hint for debugging is create the disassembly of the application that=20
caused the fault (identified by pid see bootup.c).=20
objdump -D appname > my.dmp
 see the address where fault occured....
cs=3D1b ds=3D23 means it is user mode app.
 regards
Manish Regmi