Multiboot 2 header is valid
Multiboot 2 header
  magic: 3897708758
  arch: 0 (i386)
  size: 24
  checksum: 397258514
Multiboot 2 header tag
  type: 0 (none)
  flags: 0
  size: 8
Multiboot 2 info magic number is valid
Multiboot 2 info is valid
Multiboot 2 info
  size: 1088
  reserved1: 0
Multiboot 2 info tag
  type: 21 (image load base phys addr)
  size: 12
  load base addr: 4194304
Multiboot 2 info tag
  type: 1 (boot cmd line)
  size: 21
  cmdline: hello kernel
Multiboot 2 info tag
  type: 2 (boot loader name)
  size: 31
  name: GRUB 2.04-1ubuntu26.15
Multiboot 2 info tag
  type: 10 (APM table)
  size: 28
  version: 258
  cseg: 61440
  offset: 53676
  cseg 16: 61440
  dseg: 61440
  flags: 3
  cseg len: 65520
  cseg 16 len: 65520
  dseg len: 65520
Multiboot 2 info tag
  type: 6 (memory map)
  size: 160
  entry size: 24
  entry version: 0
  entries:
    entry 0
      base addr: 0
      length: 654336
      type: 1
      reserved1: 0
    entry 1
      base addr: 654336
      length: 1024
      type: 2
      reserved1: 0
    entry 2
      base addr: 983040
      length: 65536
      type: 2
      reserved1: 0
    entry 3
      base addr: 1048576
      length: 133038080
      type: 1
      reserved1: 0
    entry 4
      base addr: 134086656
      length: 131072
      type: 2
      reserved1: 0
    entry 5
      base addr: 4294705152
      length: 262144
      type: 2
      reserved1: 0
Multiboot 2 info tag
  type: 9 (ELF symbols)
  size: 700
  num: 17
  entsize: 0
  shndx: 40
  reserved1: 0
Multiboot 2 info tag
  type: 4 (basic memory info)
  size: 16
  mem lower: 639
  mem upper: 129920
Multiboot 2 info tag
  type: 5 (BIOS boot device)
  size: 20
  bios dev: 224
  partition: 4294967295
  sub_partition: 4294967295
Multiboot 2 info tag
  type: 8 (framebuffer info)
  size: 32
  framebuffer addr: 753664
  framebuffer pitch: 160
  framebuffer width: 80
  framebuffer height: 25
  framebuffer bpp: 16
  framebuffer type: 2
  reserved1: 0
Multiboot 2 info tag
  type: 14 (ACPI old RSDP)
  size: 28
Multiboot 2 info tag
  type: 0 (none)
  size: 8