diff options
Diffstat (limited to 'sys/boot/ia64/common/exec.c')
| -rw-r--r-- | sys/boot/ia64/common/exec.c | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/sys/boot/ia64/common/exec.c b/sys/boot/ia64/common/exec.c index 5c95d0f..91736cc 100644 --- a/sys/boot/ia64/common/exec.c +++ b/sys/boot/ia64/common/exec.c @@ -143,15 +143,31 @@ elf_exec(struct preloaded_file *fp) struct ia64_pte pte; struct bootinfo *bi; u_int64_t psr; - UINTN mapkey; + UINTN mapkey, pages, size; + UINTN descsz; + UINT32 descver; EFI_STATUS status; if ((md = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL) return(EFTYPE); /* XXX actually EFUCKUP */ hdr = (Elf_Ehdr *)&(md->md_data); - status = BS->AllocatePages(AllocateAnyPages, EfiLoaderData, - EFI_SIZE_TO_PAGES(sizeof(struct bootinfo)), (void*)&bi); + /* + * Allocate enough pages to hold the bootinfo block and the memory + * map EFI will return to us. The memory map has an unknown size, + * so we have to determine that first. Note that the AllocatePages + * call can itself modify the memory map, so we have to take that + * into account as well. The changes to the memory map are caused + * by splitting a range of free memory into two (AFAICT), so that + * one is marked as being loader data. + */ + size = 0; + descsz = sizeof(EFI_MEMORY_DESCRIPTOR); + BS->GetMemoryMap(&size, NULL, &mapkey, &descsz, &descver); + size += descsz + ((sizeof(struct bootinfo) + 0x0f) & ~0x0f); + pages = EFI_SIZE_TO_PAGES(size); + status = BS->AllocatePages(AllocateAnyPages, EfiLoaderData, pages, + (void*)&bi); if (EFI_ERROR(status)) { printf("unable to create bootinfo block (status=0x%lx)\n", (long)status); @@ -159,7 +175,7 @@ elf_exec(struct preloaded_file *fp) } bzero(bi, sizeof(struct bootinfo)); - bi_load(bi, fp, &mapkey); + bi_load(bi, fp, &mapkey, pages); printf("Entering %s at 0x%lx...\n", fp->f_name, hdr->e_entry); |
