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| author | Simon Glass <sjg@chromium.org> | 2013-04-20 08:42:44 +0000 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2013-05-01 11:17:21 -0400 |
| commit | 4b5786550db2da6192f8d5f38eeccbb372f878a8 (patch) | |
| tree | 33795148f242abe84fc3353c176af1c3cf2c9f98 | |
| parent | 76b8f79c299ee8029c64c14a65cb0615bad77319 (diff) | |
| download | u-boot-4b5786550db2da6192f8d5f38eeccbb372f878a8.tar.gz u-boot-4b5786550db2da6192f8d5f38eeccbb372f878a8.tar.xz u-boot-4b5786550db2da6192f8d5f38eeccbb372f878a8.zip | |
fdt: Allow fdt command to check and update control FDT
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>
| -rw-r--r-- | common/cmd_fdt.c | 47 |
1 files changed, 34 insertions, 13 deletions
diff --git a/common/cmd_fdt.c b/common/cmd_fdt.c index 07072f3283..e5829616fc 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 |