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fdt_support: move fdt_valid from cmd_fdt.c to fdt_support.c

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Move the fdt_valid function to fdt_support.
This changes allow to be able to test the validity of a devicetree in
other c files.

Update code syntax.

Signed-off-by: Kory Maincent <kory.maincent@bootlin.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Maxime Ripard <maxime@cerno.tech>
This commit is contained in:
Kory Maincent 2021-05-04 19:31:21 +02:00 committed by Tom Rini
parent ea184cbff9
commit bbdbcaf59d
3 changed files with 48 additions and 49 deletions
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49
cmd/fdt.c
View file

@ -27,7 +27,6 @@
*/
DECLARE_GLOBAL_DATA_PTR;
static int fdt_valid(struct fdt_header **blobp);
static int fdt_parse_prop(char *const*newval, int count, char *data, int *len);
static int fdt_print(const char *pathp, char *prop, int depth);
static int is_printable_string(const void *data, int len);
@ -732,54 +731,6 @@ static int do_fdt(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
/****************************************************************************/
/**
* fdt_valid() - Check if an FDT is valid. If not, change it to NULL
*
* @blobp: Pointer to FDT pointer
* @return 1 if OK, 0 if bad (in which case *blobp is set to NULL)
*/
static int fdt_valid(struct fdt_header **blobp)
{
const void *blob = *blobp;
int err;
if (blob == NULL) {
printf ("The address of the fdt is invalid (NULL).\n");
return 0;
}
err = fdt_check_header(blob);
if (err == 0)
return 1; /* valid */
if (err < 0) {
printf("libfdt fdt_check_header(): %s", fdt_strerror(err));
/*
* Be more informative on bad version.
*/
if (err == -FDT_ERR_BADVERSION) {
if (fdt_version(blob) <
FDT_FIRST_SUPPORTED_VERSION) {
printf (" - too old, fdt %d < %d",
fdt_version(blob),
FDT_FIRST_SUPPORTED_VERSION);
}
if (fdt_last_comp_version(blob) >
FDT_LAST_SUPPORTED_VERSION) {
printf (" - too new, fdt %d > %d",
fdt_version(blob),
FDT_LAST_SUPPORTED_VERSION);
}
}
printf("\n");
*blobp = NULL;
return 0;
}
return 1;
}
/****************************************************************************/
/*
* Parse the user's input, partially heuristic. Valid formats:
* <0x00112233 4 05> - an array of cells. Numbers follow standard

46
common/fdt_support.c
View file

@ -1904,3 +1904,49 @@ int fdt_overlay_apply_verbose(void *fdt, void *fdto)
return err;
}
#endif
/**
* fdt_valid() - Check if an FDT is valid. If not, change it to NULL
*
* @blobp: Pointer to FDT pointer
* @return 1 if OK, 0 if bad (in which case *blobp is set to NULL)
*/
int fdt_valid(struct fdt_header **blobp)
{
const void *blob = *blobp;
int err;
if (!blob) {
printf("The address of the fdt is invalid (NULL).\n");
return 0;
}
err = fdt_check_header(blob);
if (err == 0)
return 1; /* valid */
if (err < 0) {
printf("libfdt fdt_check_header(): %s", fdt_strerror(err));
/*
* Be more informative on bad version.
*/
if (err == -FDT_ERR_BADVERSION) {
if (fdt_version(blob) <
FDT_FIRST_SUPPORTED_VERSION) {
printf(" - too old, fdt %d < %d",
fdt_version(blob),
FDT_FIRST_SUPPORTED_VERSION);
}
if (fdt_last_comp_version(blob) >
FDT_LAST_SUPPORTED_VERSION) {
printf(" - too new, fdt %d > %d",
fdt_version(blob),
FDT_LAST_SUPPORTED_VERSION);
}
}
printf("\n");
*blobp = NULL;
return 0;
}
return 1;
}

2
include/fdt_support.h
View file

@ -352,6 +352,8 @@ int fdt_setup_simplefb_node(void *fdt, int node, u64 base_address, u32 width,
int fdt_overlay_apply_verbose(void *fdt, void *fdto);
int fdt_valid(struct fdt_header **blobp);
/**
* fdt_get_cells_len() - Get the length of a type of cell in top-level nodes
*