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pxe: fix handling of absolute paths

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pxelinux and syslinux differ in their handling of absolute paths in menu
files. A pxelinux path is aways prepended with the bootfile path while
syslinux allows for absolute paths. u-boot was always treating a leading
/ as an absolute path breaking some pxelinux setups. Fix this by adding
a flag to distinguish pxelinux vs. syslinux behavior.

Reported-by: Ian Campbell <Ian.Campbell@citrix.com>
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
This commit is contained in:
Rob Herring 2013-10-18 13:04:42 -05:00 committed by Tom Rini
parent 5b6da28352
commit e5a9a4076f
1 changed files with 8 additions and 1 deletions
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9
common/cmd_pxe.c
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@ -25,6 +25,8 @@ const char *pxe_default_paths[] = {
NULL
};
static bool is_pxe;
/*
* Like getenv, but prints an error if envvar isn't defined in the
* environment. It always returns what getenv does, so it can be used in
@ -84,7 +86,8 @@ static int get_bootfile_path(const char *file_path, char *bootfile_path,
char *bootfile, *last_slash;
size_t path_len = 0;
if (file_path[0] == '/')
/* Only syslinux allows absolute paths */
if (file_path[0] == '/' && !is_pxe)
goto ret;
bootfile = from_env("bootfile");
@ -1472,6 +1475,8 @@ int do_pxe(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
if (argc < 2)
return CMD_RET_USAGE;
is_pxe = true;
/* drop initial "pxe" arg */
argc--;
argv++;
@ -1504,6 +1509,8 @@ int do_sysboot(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
char *filename;
int prompt = 0;
is_pxe = false;
if (strstr(argv[1], "-p")) {
prompt = 1;
argc--;