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pxe: prepend fdtdir to DTB name irrespective of source

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The directory name from an fdtdir directive in a PXE config file should
always be pre-pended to the DTB filename; it shouldn't matter whether
the DTB filename came from the $fdtfile environment variable, or whether
it was constructed dynamically from ${soc}-${board}.dtb. Fix the code to
always prepend the directory name.

Reported-by: Dennis Gilmore <dennis@ausil.us>
Fixes: c61d94d860 ("pxe: implement fdtdir extlinux.conf tag")
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Dennis Gilmore <dennis@ausil.us>
Tested-by: Dennis Gilmore <dennis@ausil.us>
This commit is contained in:
Stephen Warren 2014-02-12 14:30:04 -07:00 • committed by Tom Rini
parent 102c051fcc
commit e22361af07
1 changed files with 39 additions and 36 deletions
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75
common/cmd_pxe.c
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@ -700,44 +700,47 @@ static int label_boot(cmd_tbl_t *cmdtp, struct pxe_label *label)
if (label->fdt) { if (label->fdt) {
fdtfile = label->fdt; fdtfile = label->fdt;
} else if (label->fdtdir) { } else if (label->fdtdir) {
fdtfile = getenv("fdtfile"); char *f1, *f2, *f3, *f4, *slash;
/*
* For complex cases, it might be worth calling a
* board- or SoC-provided function here to provide a
* better default:
*
* if (!fdtfile)
* fdtfile = gen_fdtfile();
*
* If this is added, be sure to keep the default below,
* or move it to the default weak implementation of
* gen_fdtfile().
*/
if (!fdtfile) {
char *soc = getenv("soc");
char *board = getenv("board");
char *slash;
len = strlen(label->fdtdir); f1 = getenv("fdtfile");
if (!len) if (f1) {
slash = "./"; f2 = "";
else if (label->fdtdir[len - 1] != '/') f3 = "";
slash = "/"; f4 = "";
else } else {
slash = ""; /*
* For complex cases where this code doesn't
len = strlen(label->fdtdir) + strlen(slash) + * generate the correct filename, the board
strlen(soc) + 1 + strlen(board) + 5; * code should set $fdtfile during early boot,
fdtfilefree = malloc(len); * or the boot scripts should set $fdtfile
if (!fdtfilefree) { * before invoking "pxe" or "sysboot".
printf("malloc fail (FDT filename)\n"); */
return 1; f1 = getenv("soc");
} f2 = "-";
f3 = getenv("board");
snprintf(fdtfilefree, len, "%s%s%s-%s.dtb", f4 = ".dtb";
label->fdtdir, slash, soc, board);
fdtfile = fdtfilefree;
} }
len = strlen(label->fdtdir);
if (!len)
slash = "./";
else if (label->fdtdir[len - 1] != '/')
slash = "/";
else
slash = "";
len = strlen(label->fdtdir) + strlen(slash) +
strlen(f1) + strlen(f2) + strlen(f3) +
strlen(f4) + 1;
fdtfilefree = malloc(len);
if (!fdtfilefree) {
printf("malloc fail (FDT filename)\n");
return 1;
}
snprintf(fdtfilefree, len, "%s%s%s%s%s%s",
label->fdtdir, slash, f1, f2, f3, f4);
fdtfile = fdtfilefree;
} }
if (fdtfile) { if (fdtfile) {