From: Stephen Warren swarren@nvidia.com

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: c61d94d86035 ("pxe: implement fdtdir extlinux.conf tag") Signed-off-by: Stephen Warren swarren@nvidia.com --- common/cmd_pxe.c | 77 +++++++++++++++++++++++++++++--------------------------- 1 file changed, 40 insertions(+), 37 deletions(-)

diff --git a/common/cmd_pxe.c b/common/cmd_pxe.c index 29e48db20416..6aabd1357c7f 100644 --- a/common/cmd_pxe.c +++ b/common/cmd_pxe.c @@ -700,44 +700,47 @@ static int label_boot(cmd_tbl_t *cmdtp, struct pxe_label *label) if (label->fdt) { fdtfile = label->fdt; } else if (label->fdtdir) { - fdtfile = getenv("fdtfile"); - /* - * 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); - if (!len) - slash = "./"; - else if (label->fdtdir[len - 1] != '/') - slash = "/"; - else - slash = ""; - - len = strlen(label->fdtdir) + strlen(slash) + - strlen(soc) + 1 + strlen(board) + 5; - fdtfilefree = malloc(len); - if (!fdtfilefree) { - printf("malloc fail (FDT filename)\n"); - return 1; - } - - snprintf(fdtfilefree, len, "%s%s%s-%s.dtb", - label->fdtdir, slash, soc, board); - fdtfile = fdtfilefree; + char *f1, *f2, *f3, *f4, *slash; + + f1 = getenv("fdtfile"); + if (f1) { + f2 = ""; + f3 = ""; + f4 = ""; + } else { + /* + * For complex cases where this code doesn't + * generate the correct filename, the board + * code should set $fdtfile during early boot, + * or the boot scripts should set $fdtfile + * before invoking "pxe" or "sysboot". + */ + f1 = getenv("soc"); + f2 = "-"; + f3 = getenv("board"); + f4 = ".dtb"; + } + + 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) {