Re: Cannot boot from floppy disk

On Mon, 21 Apr 2014 17:31:32 +0100
David Brownlee <[email protected]> wrote:

> > Now I'm trying to find out how the images are made. An nbmake-bebox in
> > src/sys/arch/bebox/stand only creates "boot.elf" and the stripped
> > "boot", which is also in ELF format. Who converts that into PEF format
> > and puts it into the image?
> 
> I suspect you want distrib/bebox... good hunting :)

Right. I guess we have a problem with compiling on 64-bit architectures
(I compiled on NetBSD/amd64).

The BeOS PEF file header is in mkbootimage/pef.h defined as:

---8<---
struct FileHeader
{
        unsigned long magic;
        unsigned long fileTypeID;
        unsigned long archID;
        unsigned long versionNumber; 
        unsigned long dateTimeStamp; 
        unsigned long definVersion;  
        unsigned long implVersion;   
        unsigned long currentVersion;
        unsigned short numSections;
        unsigned short loadableSections;
        unsigned long memoryAddress;
};

#define PEF_MAGIC 0x4A6F7921  /* Joy! */
#define PEF_FILE  0x70656666  /* peff */
#define PEF_PPC   0x70777063  /* pwpc */
---8<---

I guess the types should be replaced by uint32_t and uint16_t to make it
work, as the file header in my boot.fs image looks like that:

00006400  4a 6f 79 21 00 00 00 00  70 65 66 66 00 00 00 00  |Joy!....peff....|
00006410  70 77 70 63 00 00 00 00  00 00 00 01 00 00 00 00  |pwpc............|

Note the empty 32-bit words between magic, fileTypeID and archID.
That cannot work...

-- 
Frank Wille