On Sat, Mar 16, 2002 at 09:19:06PM +0100, Christer Weinigel wrote:
> Hi,
>
> I'm trying to understand how to use LinuxBIOS to load Etherboot and
> then use Etherboot to load a Linux Kernel using BOOTP + TFTP, but I
> can't get it to boot.
>
> I have created an elf image using:
>
> mkelfImage --kernel /export/nano/linux/vmlinux -o kernel
>
> And put it on my DHCP server as /tftpboot/kernel, but when I try to
> load it I get the following:
>
> natsemi_probe: MAC addr 00:07:90:F0:00:19 at ioaddr 0X1000
> natsemi_probe: Vendor:0X100B Device:0X0020
> DP83815: Transceiver default autoneg. disabled, force 10 full duplex.
> DP83815: Transceiver status 0000 advertising 0000
> DP83815: Setting full-duplex based on negotiated link capability.
> Searching for server (DHCP)...
>
> ..Me: 10.128.0.132, Server: 10.128.0.254, Gateway 10.128.0.254
> Loading 10.128.0.254:/tftpboot/kernel ..(ELF)... segment does not fit in any memory
>region
> Unable to load file.
> <sleep>
> <abort>
>
It's similar to my case, in my case I had to switch to mkelfImage 1.9 to work.
Anyway the offending part is this in "osloader.c":
1031- }
1032- phdr=(Elf32_Phdr *)((unsigned int)&info
1033- + (unsigned int)(info.elf32.e_phoff));
1034- /* Check for Etherboot related limitations. Memory
1035- * below 0x10000 and between RELOC and 0xfffff is not
1036- * allowed. Reasons: the Etherboot code/data area
1037- * and the ROM/IO area. */
1038- for (segment = 0; segment < info.elf32.e_phnum;
1039- segment++) {
1040- unsigned int start, end;
1041: int fit, i;
1042- if (phdr[segment].p_type != PT_LOAD)
1043- continue;
1044-#ifdef IMAGE_FREEBSD
1045- if (image_type == Elf_FreeBSD) {
1046- phdr[segment].p_paddr += off;
1047- }
1048-#endif
1049- start = phdr[segment].p_paddr;
1050- end = phdr[segment].p_paddr+phdr[segment].p_memsz;
1051- if ((phdr[segment].p_paddr < 0x100000) &&
1052- (end > RELOC)) {
1053- printf("segment in reserved area\n");
1054- return 0;
1055- }
1056: fit = 0;
1057- for(i = 0; i < meminfo.map_count; i++) {
1058- unsigned long long r_start, r_end;
1059- if (meminfo.map[i].type != E820_RAM)
1060- continue;
1061- r_start = meminfo.map[i].addr;
1062- r_end = r_start + meminfo.map[i].size;
1063- if ((start >= r_start) && (end <= r_end)) {
1064: fit = 1;
1065- break;
1066- }
1067- }
1068: if (!fit) {
1069: printf("segment does not fit in any memory
region\n");
1070- return 0;
1071- }
You can insert extra information like printf("segment does not fit in any memory
region start=%#x\n", start);
to check.
1072- }
1073- segment = -1;
1074- loc = 0;
1075- skip = 0;
1076- toread = 0;
1077-#ifdef IMAGE_FREEBSD
1078- /* Make sure we have a null to start with... */
1079- shdr = 0;
Regards,
Kei.
> What am I doing wrong? Is there a LinuxBIOS + Etherboot HOWTO
> somewhere?
>
> /Christer
>
> --
> "Just how much can I get away with and still go to heaven?"
