[general] Remove the last bits of gnu-efi

With the new bootloader changes that use clang to directly build an EFI
application, the last piece of GNU-EFI that was used (the linker script)
is no longer necessary.

Thanks for being a great starting point, GNU-EFI!

other_software.md

@@ -87,46 +87,3 @@ which is also released under the terms of the MIT license:
 > LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 > OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 > SOFTWARE.
-
-## GNU-EFI
-
-jsix's UEFI bootloader initially used [GNU-EFI][], and still uses one file (the
-linker script for the bootloader) from that project. GNU-EFI claims to be
-released under the BSD license. Again, I could not find its specific license
-file, so I am reproducing a generic 3-clause BSD license (the most restrictive,
-so as not to assume any extra rights that may not actually be granted) for it
-here:
-
-[GNU-EFI]: https://gnu-efi.sourceforge.net
-
-> Copyright (c) Nigel Croxon
-> 
-> Redistribution and use in source and binary forms, with or without
-> modification, are permitted provided that the following conditions are met:
-> 
-> 1. Redistributions of source code must retain the above copyright notice, this
->    list of conditions and the following disclaimer.
-> 
-> 2. Redistributions in binary form must reproduce the above copyright notice,
->    this list of conditions and the following disclaimer in the documentation
->    and/or other materials provided with the distribution.
-> 
-> 3. Neither the name of the copyright holder nor the names of its contributors
->    may be used to endorse or promote products derived from this software
->    without specific prior written permission.
-> 
-> THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-> ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-> WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-> DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
-> FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-> DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-> SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-> CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-> OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-> OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-## Intel EFI Application Toolkit
-
-jsix's UEFI loader uses code from Intel's EFI Application toolkit. Relevant
-code includes license statements at the top of each file.

src/arch/x86_64/boot.ld

@@ -1,79 +0,0 @@
-/* Linker script originally from GNU-EFI project
- * https://sourceforge.net/p/gnu-efi/
- */
-
-OUTPUT_FORMAT("elf64-x86-64", "elf64-x86-64", "elf64-x86-64")
-OUTPUT_ARCH(i386:x86-64)
-ENTRY(_start)
-SECTIONS
-{
-  . = 0;
-  ImageBase = .;
-  /* .hash and/or .gnu.hash MUST come first! */
-  .hash : { *(.hash) }
-  .gnu.hash : { *(.gnu.hash) }
-  . = ALIGN(4096);
-  .eh_frame : 
-  { 
-    *(.eh_frame)
-  }
-  . = ALIGN(4096);
-  .text :
-  {
-   _text = .;
-   *(.text)
-   *(.text.*)
-   *(.gnu.linkonce.t.*)
-   . = ALIGN(16);
-  }
-  _etext = .;
-  _text_size = . - _text;
-  . = ALIGN(4096);
-  .reloc :
-  {
-   *(.reloc)
-  }
-  . = ALIGN(4096);
-  .data :
-  {
-   _data = .;
-   *(.rodata*)
-   *(.got.plt)
-   *(.got)
-   *(.data*)
-   *(.sdata)
-   /* the EFI loader doesn't seem to like a .bss section, so we stick
-      it all into .data: */
-   *(.sbss)
-   *(.scommon)
-   *(.dynbss)
-   *(.bss)
-   *(COMMON)
-   *(.rel.local)
-  }
-  .note.gnu.build-id : { *(.note.gnu.build-id) }
-
-  _edata = .;
-  _data_size = . - _etext;
-  . = ALIGN(4096);
-  .dynamic  : { *(.dynamic) }
-  . = ALIGN(4096);
-  .rela :
-  {
-    *(.rela.data*)
-    *(.rela.got)
-    *(.rela.stab)
-  }
-  . = ALIGN(4096);
-  .dynsym   : { *(.dynsym) }
-  . = ALIGN(4096);
-  .dynstr   : { *(.dynstr) }
-  . = ALIGN(4096);
-  .ignored.reloc :
-  {
-    *(.rela.reloc)
-    *(.eh_frame)
-    *(.note.GNU-stack)
-  }
-  .comment 0 : { *(.comment) }
-}