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Add support for booting relocatable kernels on PowerPC.

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This commit is contained in:
Nathan Whitehorn 2015-01-31 07:22:29 +00:00
parent c7fa6f0bb0
commit 5bfb054e01
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=277962
1 changed files with 27 additions and 19 deletions
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46
sys/boot/common/load_elf.c
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@ -175,7 +175,33 @@ __elfN(loadfile_raw)(char *filename, u_int64_t dest,
* Check to see what sort of module we are.
*/
kfp = file_findfile(NULL, __elfN(kerneltype));
if (ehdr->e_type == ET_DYN) {
#ifdef __powerpc__
/*
* Kernels can be ET_DYN, so just assume the first loaded object is the
* kernel. This assumption will be checked later.
*/
if (kfp == NULL)
ef.kernel = 1;
#endif
if (ef.kernel || ehdr->e_type == ET_EXEC) {
/* Looks like a kernel */
if (kfp != NULL) {
printf("elf" __XSTRING(__ELF_WORD_SIZE) "_loadfile: kernel already loaded\n");
err = EPERM;
goto oerr;
}
/*
* Calculate destination address based on kernel entrypoint
*/
dest = (ehdr->e_entry & ~PAGE_MASK);
if (dest == 0) {
printf("elf" __XSTRING(__ELF_WORD_SIZE) "_loadfile: not a kernel (maybe static binary?)\n");
err = EPERM;
goto oerr;
}
ef.kernel = 1;
} else if (ehdr->e_type == ET_DYN) {
/* Looks like a kld module */
if (multiboot != 0) {
printf("elf" __XSTRING(__ELF_WORD_SIZE) "_loadfile: can't load module as multiboot\n");
@ -195,24 +221,6 @@ __elfN(loadfile_raw)(char *filename, u_int64_t dest,
/* Looks OK, got ahead */
ef.kernel = 0;
} else if (ehdr->e_type == ET_EXEC) {
/* Looks like a kernel */
if (kfp != NULL) {
printf("elf" __XSTRING(__ELF_WORD_SIZE) "_loadfile: kernel already loaded\n");
err = EPERM;
goto oerr;
}
/*
* Calculate destination address based on kernel entrypoint
*/
dest = (ehdr->e_entry & ~PAGE_MASK);
if (dest == 0) {
printf("elf" __XSTRING(__ELF_WORD_SIZE) "_loadfile: not a kernel (maybe static binary?)\n");
err = EPERM;
goto oerr;
}
ef.kernel = 1;
} else {
err = EFTYPE;
goto oerr;