The current method of starting U-Boot from U-Boot adds arguments to pass the memory file through, so that memory is preserved. This is fine for a single call, but if we call from TPL -> SPL -> U-Boot the arguments build up and we have several memory files in the argument list.
Adjust the implementation to filter out arguments that we want to replace with new ones. Also print a useful error if the exec() call fails.
Signed-off-by: Simon Glass sjg@chromium.org ---
Changes in v3: None Changes in v2: None
arch/sandbox/cpu/os.c | 32 ++++++++++++++++++++++++++------ 1 file changed, 26 insertions(+), 6 deletions(-)
diff --git a/arch/sandbox/cpu/os.c b/arch/sandbox/cpu/os.c index d3dc74db4b1..5e55d31be9d 100644 --- a/arch/sandbox/cpu/os.c +++ b/arch/sandbox/cpu/os.c @@ -538,10 +538,10 @@ static int make_exec(char *fname, const void *data, int size) */ static int add_args(char ***argvp, char *add_args[], int count) { - char **argv; + char **argv, **ap; int argc;
- for (argv = *argvp, argc = 0; (*argvp)[argc]; argc++) + for (argc = 0; (*argvp)[argc]; argc++) ;
argv = os_malloc((argc + count + 1) * sizeof(char *)); @@ -549,7 +549,24 @@ static int add_args(char ***argvp, char *add_args[], int count) printf("Out of memory for %d argv\n", count); return -ENOMEM; } - memcpy(argv, *argvp, argc * sizeof(char *)); + for (ap = *argvp, argc = 0; *ap; ap++) { + char *arg = *ap; + + /* Drop args that we don't want to propagate */ + if (*arg == '-' && strlen(arg) == 2) { + switch (arg[1]) { + case 'j': + case 'm': + ap++; + continue; + } + } else if (!strcmp(arg, "--rm_memory")) { + ap++; + continue; + } + argv[argc++] = arg; + } + memcpy(argv + argc, add_args, count * sizeof(char *)); argv[argc + count] = NULL;
@@ -573,6 +590,7 @@ static int os_jump_to_file(const char *fname) int fd, err; char *extra_args[5]; char **argv = state->argv; + int argc; #ifdef DEBUG int i; #endif @@ -592,11 +610,13 @@ static int os_jump_to_file(const char *fname) extra_args[1] = (char *)fname; extra_args[2] = "-m"; extra_args[3] = mem_fname; - extra_args[4] = "--rm_memory"; - err = add_args(&argv, extra_args, - sizeof(extra_args) / sizeof(extra_args[0])); + argc = 4; + if (state->ram_buf_rm) + extra_args[argc++] = "--rm_memory"; + err = add_args(&argv, extra_args, argc); if (err) return err; + argv[0] = (char *)fname;
#ifdef DEBUG for (i = 0; argv[i]; i++)