[U-Boot] [PATCH v3 09/17] fdt: Allow fdt command to check and update control FDT
Simon Glass
sjg at chromium.org
Sat Apr 20 20:42:44 CEST 2013
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 at chromium.org>
---
Changes in v3:
- Remove #ifdefs which are not needed now that we have generic global_data
Changes in v2:
- Correct bug in setting control FDT
- Fix checkpatch checks about parenthesis alignment
common/cmd_fdt.c | 47 ++++++++++++++++++++++++++++++++++-------------
1 file changed, 34 insertions(+), 13 deletions(-)
diff --git a/common/cmd_fdt.c b/common/cmd_fdt.c
index 07072f3..e582961 100644
--- a/common/cmd_fdt.c
+++ b/common/cmd_fdt.c
@@ -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
--
1.8.2.1
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