Re: mdsetimage doesn't work on aarch64?

[Jared McNeill <jmcneill%invisible.ca@localhost>]

Hi Rob --

I haven't tried mdsetimage, but you should be able to load your ramdisk.fs 
directly from the bootloader before booting:

  > initrd ramdisk.fs

Cheers,
Jared


On Fri, 1 Mar 2019, Rob Newberry wrote:

> For my reasons :-), I’m trying to use crunch’d images on a RAM disk on aarch64.
>
> I noticed that mdsetimage corrupts the kernel file when I run it.
>
>
> Running “readelf” on the original kernel:
>
> 	bash-3.2$ aarch64--netbsd-readelf -h netbsd
> 	ELF Header:
> 	  Magic:   7f 45 4c 46 02 01 01 00 00 00 00 00 00 00 00 00
> 	  Class:                             ELF64
> 	  Data:                              2's complement, little endian
> 	  Version:                           1 (current)
> 	  OS/ABI:                            UNIX - System V
> 	  ABI Version:                       0
> 	  Type:                              EXEC (Executable file)
> 	  Machine:                           AArch64
> 	  Version:                           0x1
> 	  Entry point address:               0xffffffc000000040
> 	  Start of program headers:          64 (bytes into file)
> 	  Start of section headers:          11740736 (bytes into file)
> 	  Flags:                             0x0
> 	  Size of this header:               64 (bytes)
> 	  Size of program headers:           56 (bytes)
> 	  Number of program headers:         3
> 	  Size of section headers:           64 (bytes)
> 	  Number of section headers:         35
> 	  Section header string table index: 34
>
> Running “objcopy” to verify it’s cool:
>
> 	bash-3.2$ aarch64--netbsd-objcopy -S -O binary netbsd netbsd.bin
> 	bash-3.2$
>
> Running “mdsetimage” to put my FS image into it:
>
> 	bash-3.2$ aarch64--netbsd-mdsetimage netbsd ramdisk.fs
> 	bash-3.2$
>
> Try “objcopy” again — it barfs:
>
> 	bash-3.2$ aarch64--netbsd-objcopy -S -O binary netbsd netbsd.bin
> 	aarch64--netbsd-objcopy:netbsd: file format not recognized
>
> And “readelf” is also pretty unhappy:
>
> 	bash-3.2$ aarch64--netbsd-readelf -h netbsd
> 	ELF Header:
> 	  Magic:   7f 45 4c 46 02 01 01 00 00 00 00 00 00 00 00 00
> 	  Class:                             ELF64
> 	  Data:                              2's complement, little endian
> 	  Version:                           1 (current)
> 	  OS/ABI:                            UNIX - System V
> 	  ABI Version:                       0
> 	  Type:                              EXEC (Executable file)
> 	  Machine:                           AArch64
> 	  Version:                           0x1
> 	  Entry point address:               0xffffffc000000040
> 	  Start of program headers:          64 (bytes into file)
> 	  Start of section headers:          11740736 (bytes into file)
> 	  Flags:                             0x0
> 	  Size of this header:               64 (bytes)
> 	  Size of program headers:           56 (bytes)
> 	  Number of program headers:         3
> 	  Size of section headers:           64 (bytes)
> 	  Number of section headers:         35
> 	  Section header string table index: 34
> 	readelf: Warning: Section 0 has an out of range sh_link value of 1551486736
> 	readelf: Warning: Section 2 has an out of range sh_link value of 1551486736
> 	readelf: Warning: Section 4 has an out of range sh_link value of 1551486736
> 	readelf: Warning: Section 6 has an out of range sh_link value of 1551486736
> 	readelf: Warning: Section 8 has an out of range sh_link value of 1551486736
> 	readelf: Warning: Section 10 has an out of range sh_link value of 1551486736
> 	readelf: Warning: Section 12 has an out of range sh_link value of 1551486736
> 	readelf: Warning: Section 14 has an out of range sh_link value of 1551486736
> 	readelf: Warning: Section 16 has an out of range sh_link value of 1551486736
> 	readelf: Warning: Section 18 has an out of range sh_link value of 1551486736
> 	readelf: Warning: Section 20 has an out of range sh_link value of 1551486736
> 	readelf: Warning: Section 22 has an out of range sh_link value of 1551486736
> 	readelf: Warning: Section 24 has an out of range sh_link value of 1551486736
> 	readelf: Warning: Section 26 has an out of range sh_link value of 1551486736
> 	readelf: Warning: Section 28 has an out of range sh_link value of 1551486736
> 	readelf: Warning: Section 30 has an out of range sh_link value of 1551486736
> 	readelf: Warning: Section 32 has an out of range sh_link value of 1551486736
> 	readelf: Warning: Section 34 has an out of range sh_link value of 1551486736
> 	readelf: Error: Reading 1551486736 bytes extends past end of file for string table
>
> Is this a known limitation?  Or did I do something wrong?
>
> Rob