vbatts/grub
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2008-07-30 Robert Millan <rmh@aybabtu.com>

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* kern/ieee1275/init.c (grub_machine_set_prefix): If `grub_prefix'
        is non-empty, use it to set the `prefix' environment variable instead
        of the usual approach.
        * kern/i386/linuxbios/init.c (make_install_device): Remove function.
        (grub_machine_set_prefix): Use `grub_prefix' to set the `prefix'
        environment variable instead of dummy make_install_device().

        * kern/i386/ieee1275/startup.S: Include `<grub/machine/kernel.h>'.
        (start): Insert a data section, with `grub_prefix' variable.
        * kern/i386/linuxbios/startup.S: Likewise.

        * include/grub/powerpc/ieee1275/kernel.h [!ASM_FILE] (grub_prefix):
        New variable reference.
        * include/grub/i386/ieee1275/kernel.h (GRUB_KERNEL_MACHINE_PREFIX):
        New macro.  Defines offset of `grub_prefix' within startup.S (relative
        to `start').
        (GRUB_KERNEL_MACHINE_DATA_END): New macro.  Defines the end of data
        section within startup.S (relative to `start').
        * include/grub/i386/coreboot/kernel.h: Likewise.

        * util/elf/grub-mkimage.c (add_segments): Receive `prefix' parameter.
        Overwrite grub_prefix with its contents, at the beginning of the
        first segment.
        (main): Understand -p|--prefix.
This commit is contained in:
robertmh 2008-07-30 10:42:11 +00:00
parent 14f41dd1ed
commit ae88bca301
9 changed files with 142 additions and 13 deletions
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25
util/elf/grub-mkimage.c
View file

@ -158,7 +158,7 @@ load_modules (grub_addr_t modbase, Elf32_Phdr *phdr, const char *dir,
}
void
add_segments (char *dir, FILE *out, int chrp, char *mods[])
add_segments (char *dir, char *prefix, FILE *out, int chrp, char *mods[])
{
Elf32_Ehdr ehdr;
Elf32_Phdr *phdrs = NULL;
@ -166,7 +166,7 @@ add_segments (char *dir, FILE *out, int chrp, char *mods[])
FILE *in;
char *kernel_path;
grub_addr_t grub_end = 0;
off_t offset;
off_t offset, first_segment;
int i, phdr_size;
/* Read ELF header. */
@ -192,6 +192,8 @@ add_segments (char *dir, FILE *out, int chrp, char *mods[])
phdrs = xmalloc (phdr_size);
offset += ALIGN_UP (phdr_size, GRUB_TARGET_SIZEOF_LONG);
first_segment = offset;
/* Copy all existing segments. */
for (i = 0; i < grub_target_to_host16 (ehdr.e_phnum); i++)
{
@ -272,6 +274,13 @@ add_segments (char *dir, FILE *out, int chrp, char *mods[])
/* Write ELF header. */
grub_util_write_image_at (&ehdr, sizeof (ehdr), 0, out);
if (prefix)
{
if (GRUB_KERNEL_MACHINE_PREFIX + strlen (prefix) + 1 > GRUB_KERNEL_MACHINE_DATA_END)
grub_util_error ("prefix too long");
grub_util_write_image_at (prefix, strlen (prefix) + 1, first_segment + GRUB_KERNEL_MACHINE_PREFIX, out);
}
free (phdrs);
free (kernel_path);
}
@ -279,6 +288,7 @@ add_segments (char *dir, FILE *out, int chrp, char *mods[])
static struct option options[] =
{
{"directory", required_argument, 0, 'd'},
{"prefix", required_argument, 0, 'p'},
{"output", required_argument, 0, 'o'},
{"help", no_argument, 0, 'h'},
{"note", no_argument, 0, 'n'},
@ -299,6 +309,7 @@ Usage: grub-mkimage -o FILE [OPTION]... [MODULES]\n\
Make a bootable image of GRUB.\n\
\n\
-d, --directory=DIR use images and modules under DIR [default=%s]\n\
-p, --prefix=DIR set grub_prefix directory\n\
-o, --output=FILE output a generated image to FILE\n\
-h, --help display this message and exit\n\
-n, --note add NOTE segment for CHRP Open Firmware\n\
@ -317,13 +328,14 @@ main (int argc, char *argv[])
FILE *fp;
char *output = NULL;
char *dir = NULL;
char *prefix = NULL;
int chrp = 0;
progname = "grub-mkimage";
while (1)
{
int c = getopt_long (argc, argv, "d:o:hVvn", options, 0);
int c = getopt_long (argc, argv, "d:p:o:hVvn", options, 0);
if (c == -1)
break;
@ -334,6 +346,11 @@ main (int argc, char *argv[])
free (dir);
dir = xstrdup (optarg);
break;
case 'p':
if (prefix)
free (prefix);
prefix = xstrdup (optarg);
break;
case 'h':
usage (0);
break;
@ -364,7 +381,7 @@ main (int argc, char *argv[])
if (! fp)
grub_util_error ("cannot open %s", output);
add_segments (dir ? : GRUB_LIBDIR, fp, chrp, argv + optind);
add_segments (dir ? : GRUB_LIBDIR, prefix, fp, chrp, argv + optind);
fclose (fp);