diff options
Diffstat (limited to 'stand/powerpc/kboot/ppc64_elf_freebsd.c')
| -rw-r--r-- | stand/powerpc/kboot/ppc64_elf_freebsd.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/stand/powerpc/kboot/ppc64_elf_freebsd.c b/stand/powerpc/kboot/ppc64_elf_freebsd.c new file mode 100644 index 0000000000000..22fa7b576775a --- /dev/null +++ b/stand/powerpc/kboot/ppc64_elf_freebsd.c @@ -0,0 +1,124 @@ +/*- + * Copyright (c) 2001 Benno Rice <benno@FreeBSD.org> + * All rights reserved. + * + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#define __ELF_WORD_SIZE 64 + +#include <sys/param.h> +#include <sys/linker.h> + +#include <machine/metadata.h> +#include <machine/elf.h> + +#include <stand.h> + +#include "bootstrap.h" +#include "host_syscall.h" + +extern char end[]; +extern void *kerneltramp; +extern size_t szkerneltramp; +extern int nkexec_segments; +extern void * loaded_segments; + +int +ppc64_elf_loadfile(char *filename, u_int64_t dest, + struct preloaded_file **result) +{ + int r; + + r = __elfN(loadfile)(filename, dest, result); + if (r != 0) + return (r); + + return (0); +} + +int +ppc64_elf_exec(struct preloaded_file *fp) +{ + struct file_metadata *fmp; + vm_offset_t mdp, dtb; + Elf_Ehdr *e; + int error; + uint32_t *trampoline; + uint64_t entry; + vm_offset_t trampolinebase; + + if ((fmp = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL) { + return(EFTYPE); + } + e = (Elf_Ehdr *)&fmp->md_data; + + /* Figure out where to put it */ + trampolinebase = archsw.arch_loadaddr(LOAD_RAW, NULL, 0); + + /* Set up loader trampoline */ + trampoline = malloc(szkerneltramp); + memcpy(trampoline, &kerneltramp, szkerneltramp); + /* Parse function descriptor for ELFv1 kernels */ + if ((e->e_flags & 3) == 2) + entry = e->e_entry; + else + archsw.arch_copyout(e->e_entry + elf64_relocation_offset, + &entry, 8); + trampoline[2] = entry + elf64_relocation_offset; + trampoline[4] = 0; /* Phys. mem offset */ + trampoline[5] = 0; /* OF entry point */ + + if ((error = md_load64(fp->f_args, &mdp, &dtb)) != 0) + return (error); + + trampoline[3] = dtb; + trampoline[6] = mdp; + trampoline[7] = sizeof(mdp); + printf("Kernel entry at %#jx (%#x) ...\n", e->e_entry, trampoline[2]); + printf("DTB at %#x, mdp at %#x\n", dtb, mdp); + + dev_cleanup(); + + archsw.arch_copyin(trampoline, trampolinebase, szkerneltramp); + free(trampoline); + + error = kexec_load(trampolinebase, nkexec_segments, &loaded_segments); + if (error != 0) + panic("kexec_load returned error: %d", error); + error = host_reboot(0xfee1dead, 672274793, + 0x45584543 /* LINUX_REBOOT_CMD_KEXEC */, NULL); + if (error != 0) + panic("reboot returned error: %d", error); + while (1) {} + + panic("exec returned"); +} + +struct file_format ppc_elf64 = +{ + ppc64_elf_loadfile, + ppc64_elf_exec +}; |