| /* |
| * init::start will pass stacktop to setup() as the base of free memory. |
| * setup() will then move the FDT and initrd to that base before calling |
| * mem_init(). With those movements and this linker script, we'll end up |
| * having the following memory layout: |
| * |
| * +----------------------+ <-- top of physical memory |
| * | | |
| * ~ ~ |
| * | | |
| * +----------------------+ <-- top of initrd |
| * | | |
| * +----------------------+ <-- top of FDT |
| * | | |
| * +----------------------+ <-- top of cpu0's stack |
| * | | |
| * +----------------------+ <-- top of text/data/bss sections |
| * | | |
| * | | |
| * +----------------------+ <-- load address |
| * | | |
| * +----------------------+ <-- physical address 0x0 |
| */ |
| |
| PHDRS |
| { |
| text PT_LOAD FLAGS(5); |
| data PT_LOAD FLAGS(6); |
| } |
| |
| SECTIONS |
| { |
| PROVIDE(_text = .); |
| .text : { *(.init) *(.text) *(.text.*) } :text |
| . = ALIGN(4K); |
| PROVIDE(_etext = .); |
| |
| PROVIDE(reloc_start = .); |
| .rela.dyn : { *(.rela.dyn) } |
| PROVIDE(reloc_end = .); |
| .dynsym : { *(.dynsym) } |
| .dynstr : { *(.dynstr) } |
| .hash : { *(.hash) } |
| .gnu.hash : { *(.gnu.hash) } |
| .got : { *(.got) *(.got.plt) } |
| .eh_frame : { *(.eh_frame) } |
| |
| .rodata : { *(.rodata*) } :data |
| .data : { *(.data) } :data |
| . = ALIGN(16); |
| PROVIDE(bss = .); |
| .bss : { *(.bss) } |
| . = ALIGN(16); |
| PROVIDE(ebss = .); |
| . = ALIGN(4K); |
| PROVIDE(edata = .); |
| |
| /* |
| * stack depth is 8K and sp must be 16 byte aligned |
| * sp must always be strictly less than the true stacktop |
| */ |
| . += 12K; |
| . = ALIGN(4K); |
| PROVIDE(stackptr = . - 16); |
| PROVIDE(stacktop = .); |
| |
| /DISCARD/ : { |
| *(.note*) |
| *(.interp) |
| *(.comment) |
| *(.dynamic) |
| } |
| } |
| |
| ENTRY(start) |
