diff options
Diffstat (limited to 'linker.ld')
| -rw-r--r-- | linker.ld | 63 |
1 files changed, 18 insertions, 45 deletions
@@ -1,18 +1,21 @@ -ENTRY(_start) +ENTRY(_start) /* defined in boot.S */ SECTIONS { - /* Starts at LOADER_ADDR, which is 0x8000 - that's where RPis in */ - /* 32-bit mode load kernel at. */ + /* Starts at 0x8000 - that's where RPis in 32-bit mode load kernel at. */ /* My experiments do, however, show, that qemu emulating RPi2 */ /* loads the kernel at 0x10000! (took some pain to find out). */ - /* Since we're using a bootloader now, we can compile the kernel */ - /* for 0x8000 and bootloader will load it properly (although it */ - /* itself still has to be compiled for 0x10000) */ - /* rpi-open-firmware, ont he other hand, loads kernel at 0x2000000 */ - /* This issue is also to be avoided by the use of bootloader */ + /* rpi-open-firmware, on the other hand, loads kernel at 0x2000000! */ + /* This is not really a problem, since: */ + /* 1. We can use out bootloader to load the kernel at 0x8000 */ + /* 2. We compile kernel with -fPIC, so it should be able to work with */ + /* any load addr. + /* 3. In qemu, we can load kernel.elf instead of raw binary */ + /* (qemu will do the loading then) */ + . = 0x8000; - /* For AArch64, use . = 0x80000; Unless this too is wrong in qemu… */ + + /* For AArch64, use . = 0x80000 */ __start = .; __text_start = .; @@ -51,44 +54,14 @@ SECTIONS __bss_size = __bss_end - __bss_start; - - /* Here come the definitions for renamed sections */ - __renamed_start = .; - __renamed_text_start = .; - .renamed_text : - { - *(.renamed_text) - } - . = ALIGN(4096); /* align to page size */ - __renamed_text_end = .; - - __renamed_rodata_start = .; - .renamed_rodata : - { - *(.renamed_rodata) - } - . = ALIGN(4096); /* align to page size */ - __renamed_rodata_end = .; - - __renamed_data_start = .; - .renamed_data : - { - *(.renamed_data) - } - . = ALIGN(4096); /* align to page size */ - __renamed_data_end = .; - - __renamed_bss_start = .; - .renamed_bss : + /* libkernel */ + .libkernel : { - renamed_bss = .; - *(.renamed_bss) + __libkernel_start = .; + libkernel.o + __libkernel_end = .; } - . = ALIGN(4096); /* align to page size */ - __renamed_bss_end = .; - __renamed_bss_size = __renamed_bss_end - __renamed_bss_start; - __renamed_end = .; - __renamed_size = __renamed_end - __renamed_start; + __libkernel_size = __libkernel_end - __libkernel_start; . = ALIGN(4096); /* align to page size */ |