[U-Boot-Users] i368 / amd Sc520 Uboot

[Wolfgang Kanovsky]

Hi All

im trying to use U-boot for i386/AMDSC520 implemetation ...
Fixed a lot of files ..

last i had to worry with the implemtation of the mkimage and linux -
do_bootm implementation
I was not able to start a kernel now at all ..system hangs ..

know reason why ..any hints ? suggestions ..or anyone here how has fixed it
?
any help would be very nice !!

best regards


Wolfgang k.

@ Wolfgang Denk : Hallo ! -- wer pflegt eigentlich den i368 code scheint
sein jahren nix mehr passiert zu sein
und im vergleich zum PPC um jahrhunderte zurück zu liegen :-(( geschweiged
das der code so wie er im cvs is auch nur annähernd starten würde ...

----------------------------------------------------------------------------
int enter_realmode(u16 seg, u16 off, struct pt_regs *in, struct pt_regs
*out)
{
	printf("before bios_setup...\n");

	/* setup out thin bios emulation */
	if (bios_setup()) {
		return -1;
	}

	printf("before realmode_setup...\n");
	if (realmode_setup()) {
		return -1;
	}

	printf("after bios_setup...\n");
	in->eip = off;
	in->xcs = seg;
	if (3>(in->esp & 0xffff)) {
		printf("Warning: entering realmode with sp < 4 will fail\n");
	}

	printf("before memcpy...\n");
	memcpy(REALMODE_MAILBOX, in, sizeof(struct pt_regs));
	asm("wbinvd\n");
	printf("after memcpy...\n");

	__asm__ volatile (
		 "lcall $0x20,%0\n"  : :  "i" (&realmode_enter) );

	asm("wbinvd\n");
	memcpy(out, REALMODE_MAILBOX, sizeof(struct pt_regs));
	return out->eax;

	schould exec of teh kernel start here??????????????????????
}


LOG:

U-Boot 1.0.2 (Apr 28 2004 - 00:01:51)

#########################################################
#    Adopted for HOPF AMD SC520 Embbeded BOARD          #
#########################################################
U-Boot code: 08FC0000 -> 08FDF349  data: 03F00000 -> 03F017F3
        BSS: 03F017F4 -> 03F0BCBF stack: 03F0BCC0 -> 03F13CBF
DRAM Configuration:
Bank #0: 00000000 64 MB
Bank #0: Micron / Intel 28F640J3A
Flash: 16 MB
FLASH: 16 MB
set_irq(): map INTA to IRQ9
        00  11  8086  1209  0200  09
In:    serial
Out:   serial
Err:   serial
Net:   i82559#0
***SC520 hopf BOARD last stage init done***
boot => bootm 8000000
U-Boot Command_code_tabelle: 08FD7C36 -> 08FD80B8
 U-Boot Cmd_table_start_search: 08FD7C38
 ## Booting image at 08000000 ...
   Image Name:   Hopf Embedded Linux Kernel
   Image Type:   Intel x86 Linux Kernel Image (uncompressed)  // fix for
i368 mkimage !
   Data Size:    752142 Bytes = 734.5 kB
   Load Address: 00000000
   Entry Point:  00000000
   Verifying Checksum ... OK
OK
No initrd
Using boot protocol version 2.03
Linux kernel version 2.4.21-NANO-rthal5 (rac at chicago) #2 Tue Apr 27 19:58:10
CEST 2004
Kernel command line: "console=ttyS0,9600 root=/dev/ram0 rw "
Loading bzImage at address 0x00100000 (749070 bytes)
## Transferring control to Linux (at address 00090000) ...

Starting kernel ...

before bios_setup...
before realmode_setup...
after bios_setup...
before memcpy...
after memcpy...