diff options
Diffstat (limited to 'arch/arm64/kernel/tashaboot.lds')
| -rw-r--r-- | arch/arm64/kernel/tashaboot.lds | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/arm64/kernel/tashaboot.lds b/arch/arm64/kernel/tashaboot.lds index 4f8dfb1..e2b7954 100644 --- a/arch/arm64/kernel/tashaboot.lds +++ b/arch/arm64/kernel/tashaboot.lds @@ -12,6 +12,14 @@ ENTRY(_start) SECTIONS { + /* + * the first 64 bytes are the arm64 Image header: code0 'b' over + * it, magic ARM\x64, text_offset 0. qemu -kernel parses the + * header, loads the file at 0x40000000 and enters at + * 0x40000000, where the branch lands on reset at 0x40000040. + * without the header qemu guesses text_offset 0x80000 and runs + * the whole loader from the wrong address. + */ . = 0x40000000; __image_copy_start = .; @@ -21,6 +29,12 @@ SECTIONS { arch/arm64/kernel/start.o (.text.boot) *(.text.boot) + + /* the Image header, code0 branches over it */ + . = ALIGN(64); + *(.text.imgheader) + . = ALIGN(64); + *(.text*) } @@ -52,6 +66,16 @@ SECTIONS . = ALIGN(8); __bss_end = .; + /* + * the stack lives in its own region, clear of bss. page tables + * and buffers are bss objects, a stack sharing their address + * space grows down into them and the first deep call crushes + * whatever it meets. + */ + . = ALIGN(4096); + __stack_bottom = .; + . += 0x4000; + __stack_top = .; __image_copy_end = .; /DISCARD/ : { *(.dynsym) } |