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fdt: Allow fdt command to check and update control FDT

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There is an existing fdt command to deal with the working FDT. Enhance this
to support the control FDT also (CONFIG_OF_CONTROL).

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2013-04-20 08:42:44 +00:00 committed by Tom Rini
parent 76b8f79c29
commit 4b5786550d
1 changed files with 34 additions and 13 deletions
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47
common/cmd_fdt.c
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@ -100,38 +100,59 @@ static int do_fdt(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
*/
if (argv[1][0] == 'a') {
unsigned long addr;
int control = 0;
struct fdt_header *blob;
/*
* Set the address [and length] of the fdt.
*/
if (argc == 2) {
if (!fdt_valid(&working_fdt))
argc -= 2;
argv += 2;
/* Temporary #ifdef - some archs don't have fdt_blob yet */
#ifdef CONFIG_OF_CONTROL
if (argc && !strcmp(*argv, "-c")) {
control = 1;
argc--;
argv++;
}
#endif
if (argc == 0) {
if (control)
blob = (struct fdt_header *)gd->fdt_blob;
else
blob = working_fdt;
if (!blob || !fdt_valid(&blob))
return 1;
printf("The address of the fdt is %p\n", working_fdt);
printf("The address of the fdt is %#08lx\n",
control ? (ulong)blob :
getenv_hex("fdtaddr", 0));
return 0;
}
addr = simple_strtoul(argv[2], NULL, 16);
set_working_fdt_addr((void *)addr);
if (!fdt_valid(&working_fdt))
addr = simple_strtoul(argv[0], NULL, 16);
blob = (struct fdt_header *)addr;
if (!fdt_valid(&blob))
return 1;
if (control)
gd->fdt_blob = blob;
else
set_working_fdt_addr((void *)addr);
if (argc >= 4) {
if (argc >= 2) {
int len;
int err;
/*
* Optional new length
*/
len = simple_strtoul(argv[3], NULL, 16);
if (len < fdt_totalsize(working_fdt)) {
len = simple_strtoul(argv[1], NULL, 16);
if (len < fdt_totalsize(blob)) {
printf ("New length %d < existing length %d, "
"ignoring.\n",
len, fdt_totalsize(working_fdt));
len, fdt_totalsize(blob));
} else {
/*
* Open in place with a new length.
*/
err = fdt_open_into(working_fdt, working_fdt, len);
err = fdt_open_into(blob, blob, len);
if (err != 0) {
printf ("libfdt fdt_open_into(): %s\n",
fdt_strerror(err));
@ -960,7 +981,7 @@ static int fdt_print(const char *pathp, char *prop, int depth)
/********************************************************************/
#ifdef CONFIG_SYS_LONGHELP
static char fdt_help_text[] =
"addr <addr> [<length>] - Set the fdt location to <addr>\n"
"addr [-c] <addr> [<length>] - Set the [control] fdt location to <addr>\n"
#ifdef CONFIG_OF_BOARD_SETUP
"fdt boardsetup - Do board-specific set up\n"
#endif