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-rw-r--r--common/cmd_fdt.c426
1 files changed, 239 insertions, 187 deletions
diff --git a/common/cmd_fdt.c b/common/cmd_fdt.c
index 8402ca7..7066d7d 100644
--- a/common/cmd_fdt.c
+++ b/common/cmd_fdt.c
@@ -45,16 +45,12 @@
DECLARE_GLOBAL_DATA_PTR;
/*
- * Scratchpad memory.
- */
-static char data[SCRATCHPAD];
-
-
-/*
* Function prototypes/declarations.
*/
static int fdt_valid(void);
-static void print_data(const void *data, int len);
+static int fdt_parse_prop(char *pathp, char *prop, char *newval,
+ char *data, int *len);
+static int fdt_print(char *pathp, char *prop, int depth);
static int findnodeoffset(const char *pathp)
{
@@ -68,7 +64,8 @@ static int findnodeoffset(const char *pathp)
/*
* Not found or something else bad happened.
*/
- printf ("findnodeoffset() libfdt: %s\n", fdt_strerror(nodeoffset));
+ printf ("findnodeoffset() libfdt: %s\n",
+ fdt_strerror(nodeoffset));
}
}
return nodeoffset;
@@ -105,7 +102,8 @@ int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
*/
len = simple_strtoul(argv[3], NULL, 16);
if (len < fdt_totalsize(fdt)) {
- printf ("New length %d < existing length %d, ignoring.\n",
+ printf ("New length %d < existing length %d, "
+ "ignoring.\n",
len, fdt_totalsize(fdt));
} else {
/*
@@ -113,7 +111,8 @@ int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
*/
err = fdt_open_into(fdt, fdt, len);
if (err != 0) {
- printf ("libfdt fdt_open_into(): %s\n", fdt_strerror(err));
+ printf ("libfdt fdt_open_into(): %s\n",
+ fdt_strerror(err));
}
}
}
@@ -139,7 +138,7 @@ int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
return 1;
}
- newaddr = (struct fdt_header *)simple_strtoul(argv[3], NULL, 16);
+ newaddr = (struct fdt_header *)simple_strtoul(argv[3],NULL,16);
/*
* If the user specifies a length, use that. Otherwise use the
@@ -150,7 +149,8 @@ int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
} else {
len = simple_strtoul(argv[4], NULL, 16);
if (len < fdt_totalsize(fdt)) {
- printf ("New length 0x%X < existing length 0x%X, aborting.\n",
+ printf ("New length 0x%X < existing length "
+ "0x%X, aborting.\n",
len, fdt_totalsize(fdt));
return 1;
}
@@ -161,7 +161,8 @@ int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
*/
err = fdt_open_into(fdt, newaddr, len);
if (err != 0) {
- printf ("libfdt fdt_open_into(): %s\n", fdt_strerror(err));
+ printf ("libfdt fdt_open_into(): %s\n",
+ fdt_strerror(err));
return 1;
}
fdt = newaddr;
@@ -195,7 +196,8 @@ int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
}
err = fdt_add_subnode(fdt, nodeoffset, nodep);
if (err < 0) {
- printf ("libfdt fdt_add_subnode(): %s\n", fdt_strerror(err));
+ printf ("libfdt fdt_add_subnode(): %s\n",
+ fdt_strerror(err));
return 1;
}
@@ -204,16 +206,12 @@ int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
********************************************************************/
} else if (argv[1][0] == 's') {
char *pathp; /* path */
- char *prop; /* property */
- struct fdt_property *nodep; /* node struct pointer */
+ char *prop; /* property */
char *newval; /* value from the user (as a string) */
- char *vp; /* temporary value pointer */
- char *cp; /* temporary char pointer */
int nodeoffset; /* node offset from libfdt */
- int len; /* new length of the property */
- int oldlen; /* original length of the property */
- unsigned long tmp; /* holds converted values */
- int ret; /* return value */
+ static char data[SCRATCHPAD]; /* storage for the property */
+ int len; /* new length of the property */
+ int ret; /* return value */
/*
* Parameters: Node path, property, value.
@@ -234,67 +232,9 @@ int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
*/
return 1;
}
- /*
- * Convert the new property
- */
- vp = data;
- if (*newval == '<') {
- /*
- * Bigger values than bytes.
- */
- len = 0;
- newval++;
- while ((*newval != '>') && (*newval != '\0')) {
- cp = newval;
- tmp = simple_strtoul(cp, &newval, 16);
- if ((newval - cp) <= 2) {
- *vp = tmp & 0xFF;
- vp += 1;
- len += 1;
- } else if ((newval - cp) <= 4) {
- *(uint16_t *)vp = __cpu_to_be16(tmp);
- vp += 2;
- len += 2;
- } else if ((newval - cp) <= 8) {
- *(uint32_t *)vp = __cpu_to_be32(tmp);
- vp += 4;
- len += 4;
- } else {
- printf("Sorry, I could not convert \"%s\"\n", cp);
- return 1;
- }
- while (*newval == ' ')
- newval++;
- }
- if (*newval != '>') {
- printf("Unexpected character '%c'\n", *newval);
- return 1;
- }
- } else if (*newval == '[') {
- /*
- * Byte stream. Convert the values.
- */
- len = 0;
- newval++;
- while ((*newval != ']') && (*newval != '\0')) {
- tmp = simple_strtoul(newval, &newval, 16);
- *vp++ = tmp & 0xFF;
- len++;
- while (*newval == ' ')
- newval++;
- }
- if (*newval != ']') {
- printf("Unexpected character '%c'\n", *newval);
- return 1;
- }
- } else {
- /*
- * Assume it is a string. Copy it into our data area for
- * convenience (including the terminating '\0').
- */
- len = strlen(newval) + 1;
- strcpy(data, newval);
- }
+ ret = fdt_parse_prop(pathp, prop, newval, data, &len);
+ if (ret != 0)
+ return ret;
ret = fdt_setprop(fdt, nodeoffset, prop, data, len);
if (ret < 0) {
@@ -306,20 +246,10 @@ int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
* Print (recursive) / List (single level)
********************************************************************/
} else if ((argv[1][0] == 'p') || (argv[1][0] == 'l')) {
- /*
- * Recursively print (a portion of) the fdt.
- */
- static int offstack[MAX_LEVEL];
- static char tabs[MAX_LEVEL+1] = "\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t";
int depth = MAX_LEVEL; /* how deep to print */
char *pathp; /* path */
- char *prop; /* property */
- void *nodep; /* property node pointer */
- int nodeoffset; /* node offset from libfdt */
- int nextoffset; /* next node offset from libfdt */
- uint32_t tag; /* tag */
- int len; /* length of the property */
- int level = 0; /* keep track of nesting level */
+ char *prop; /* property */
+ int ret; /* return value */
/*
* list is an alias for print, but limited to 1 level
@@ -338,88 +268,9 @@ int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
else
prop = NULL;
- nodeoffset = findnodeoffset(pathp);
- if (nodeoffset < 0) {
- /*
- * Not found or something else bad happened.
- */
- return 1;
- }
- /*
- * The user passed in a property as well as node path. Print only
- * the given property and then return.
- */
- if (prop) {
- nodep = fdt_getprop (fdt, nodeoffset, prop, &len);
- if (len == 0) {
- printf("%s %s\n", pathp, prop); /* no property value */
- return 0;
- } else if (len > 0) {
- printf("%s=", prop);
- print_data (nodep, len);
- printf("\n");
- return 0;
- } else {
- printf ("libfdt fdt_getprop(): %s\n", fdt_strerror(len));
- return 1;
- }
- }
-
- /*
- * The user passed in a node path and no property, print the node
- * and all subnodes.
- */
- offstack[0] = nodeoffset;
-
- while(level >= 0) {
- tag = fdt_next_tag(fdt, nodeoffset, &nextoffset, &pathp);
- switch(tag) {
- case FDT_BEGIN_NODE:
- if(level <= depth)
- printf("%s%s {\n", &tabs[MAX_LEVEL - level], pathp);
- level++;
- offstack[level] = nodeoffset;
- if (level >= MAX_LEVEL) {
- printf("Aaaiii <splat> nested too deep. Aborting.\n");
- return 1;
- }
- break;
- case FDT_END_NODE:
- level--;
- if(level <= depth)
- printf("%s};\n", &tabs[MAX_LEVEL - level]);
- if (level == 0) {
- level = -1; /* exit the loop */
- }
- break;
- case FDT_PROP:
- nodep = fdt_getprop (fdt, offstack[level], pathp, &len);
- if (len < 0) {
- printf ("libfdt fdt_getprop(): %s\n", fdt_strerror(len));
- return 1;
- } else if (len == 0) {
- /* the property has no value */
- if(level <= depth)
- printf("%s%s;\n", &tabs[MAX_LEVEL - level], pathp);
- } else {
- if(level <= depth) {
- printf("%s%s=", &tabs[MAX_LEVEL - level], pathp);
- print_data (nodep, len);
- printf(";\n");
- }
- }
- break;
- case FDT_NOP:
- break;
- case FDT_END:
- return 1;
- default:
- if(level <= depth)
- printf("Unknown tag 0x%08X\n", tag);
- return 1;
- }
- nodeoffset = nextoffset;
- }
+ ret = fdt_print(pathp, prop, depth);
+ if (ret != 0)
+ return ret;
/********************************************************************
* Remove a property/node
@@ -446,13 +297,15 @@ int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
if (argc > 3) {
err = fdt_delprop(fdt, nodeoffset, argv[3]);
if (err < 0) {
- printf("libfdt fdt_delprop(): %s\n", fdt_strerror(err));
+ printf("libfdt fdt_delprop(): %s\n",
+ fdt_strerror(err));
return err;
}
} else {
err = fdt_del_node(fdt, nodeoffset);
if (err < 0) {
- printf("libfdt fdt_del_node(): %s\n", fdt_strerror(err));
+ printf("libfdt fdt_del_node(): %s\n",
+ fdt_strerror(err));
return err;
}
}
@@ -486,7 +339,7 @@ int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
return 0;
}
-/********************************************************************/
+/****************************************************************************/
static int fdt_valid(void)
{
@@ -509,12 +362,14 @@ static int fdt_valid(void)
if (err == -FDT_ERR_BADVERSION) {
if (fdt_version(fdt) < FDT_FIRST_SUPPORTED_VERSION) {
printf (" - too old, fdt $d < %d",
- fdt_version(fdt), FDT_FIRST_SUPPORTED_VERSION);
+ fdt_version(fdt),
+ FDT_FIRST_SUPPORTED_VERSION);
fdt = NULL;
}
if (fdt_last_comp_version(fdt) > FDT_LAST_SUPPORTED_VERSION) {
printf (" - too new, fdt $d > %d",
- fdt_version(fdt), FDT_LAST_SUPPORTED_VERSION);
+ fdt_version(fdt),
+ FDT_LAST_SUPPORTED_VERSION);
fdt = NULL;
}
return 0;
@@ -525,13 +380,91 @@ static int fdt_valid(void)
return 1;
}
-/********************************************************************/
+/****************************************************************************/
/*
- * OF flat tree handling
- * Written by: Pantelis Antoniou <pantelis.antoniou@gmail.com>
- * Updated by: Matthew McClintock <msm@freescale.com>
- * Converted to libfdt by: Gerald Van Baren <vanbaren@cideas.com>
+ * Parse the user's input, partially heuristic. Valid formats:
+ * <00> - hex byte
+ * <0011> - hex half word (16 bits)
+ * <00112233> - hex word (32 bits)
+ * - hex double words (64 bits) are not supported, must use
+ * a byte stream instead.
+ * [00 11 22 .. nn] - byte stream
+ * "string" - If the the value doesn't start with "<" or "[", it is
+ * treated as a string. Note that the quotes are
+ * stripped by the parser before we get the string.
+ */
+static int fdt_parse_prop(char *pathp, char *prop, char *newval,
+ char *data, int *len)
+{
+ char *cp; /* temporary char pointer */
+ unsigned long tmp; /* holds converted values */
+
+ if (*newval == '<') {
+ /*
+ * Bigger values than bytes.
+ */
+ *len = 0;
+ newval++;
+ while ((*newval != '>') && (*newval != '\0')) {
+ cp = newval;
+ tmp = simple_strtoul(cp, &newval, 16);
+ if ((newval - cp) <= 2) {
+ *data = tmp & 0xFF;
+ data += 1;
+ *len += 1;
+ } else if ((newval - cp) <= 4) {
+ *(uint16_t *)data = __cpu_to_be16(tmp);
+ data += 2;
+ *len += 2;
+ } else if ((newval - cp) <= 8) {
+ *(uint32_t *)data = __cpu_to_be32(tmp);
+ data += 4;
+ *len += 4;
+ } else {
+ printf("Sorry, I could not convert \"%s\"\n",
+ cp);
+ return 1;
+ }
+ while (*newval == ' ')
+ newval++;
+ }
+ if (*newval != '>') {
+ printf("Unexpected character '%c'\n", *newval);
+ return 1;
+ }
+ } else if (*newval == '[') {
+ /*
+ * Byte stream. Convert the values.
+ */
+ *len = 0;
+ newval++;
+ while ((*newval != ']') && (*newval != '\0')) {
+ tmp = simple_strtoul(newval, &newval, 16);
+ *data++ = tmp & 0xFF;
+ *len++;
+ while (*newval == ' ')
+ newval++;
+ }
+ if (*newval != ']') {
+ printf("Unexpected character '%c'\n", *newval);
+ return 1;
+ }
+ } else {
+ /*
+ * Assume it is a string. Copy it into our data area for
+ * convenience (including the terminating '\0').
+ */
+ *len = strlen(newval) + 1;
+ strcpy(data, newval);
+ }
+ return 0;
+}
+
+/****************************************************************************/
+
+/*
+ * Heuristic to guess if this is a string or concatenated strings.
*/
static int is_printable_string(const void *data, int len)
@@ -571,6 +504,12 @@ static int is_printable_string(const void *data, int len)
return 1;
}
+
+/*
+ * Print the property in the best format, a heuristic guess. Print as
+ * a string, concatenated strings, a byte, word, double word, or (if all
+ * else fails) it is printed as a stream of bytes.
+ */
static void print_data(const void *data, int len)
{
int j;
@@ -626,6 +565,119 @@ static void print_data(const void *data, int len)
}
}
+/****************************************************************************/
+
+/*
+ * Recursively print (a portion of) the fdt. The depth parameter
+ * determines how deeply nested the fdt is printed.
+ */
+static int fdt_print(char *pathp, char *prop, int depth)
+{
+ static int offstack[MAX_LEVEL];
+ static char tabs[MAX_LEVEL+1] =
+ "\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t"
+ "\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t";
+ void *nodep; /* property node pointer */
+ int nodeoffset; /* node offset from libfdt */
+ int nextoffset; /* next node offset from libfdt */
+ uint32_t tag; /* tag */
+ int len; /* length of the property */
+ int level = 0; /* keep track of nesting level */
+
+ nodeoffset = findnodeoffset(pathp);
+ if (nodeoffset < 0) {
+ /*
+ * Not found or something else bad happened.
+ */
+ return 1;
+ }
+ /*
+ * The user passed in a property as well as node path.
+ * Print only the given property and then return.
+ */
+ if (prop) {
+ nodep = fdt_getprop (fdt, nodeoffset, prop, &len);
+ if (len == 0) {
+ /* no property value */
+ printf("%s %s\n", pathp, prop);
+ return 0;
+ } else if (len > 0) {
+ printf("%s=", prop);
+ print_data (nodep, len);
+ printf("\n");
+ return 0;
+ } else {
+ printf ("libfdt fdt_getprop(): %s\n",
+ fdt_strerror(len));
+ return 1;
+ }
+ }
+
+ /*
+ * The user passed in a node path and no property,
+ * print the node and all subnodes.
+ */
+ offstack[0] = nodeoffset;
+
+ while(level >= 0) {
+ tag = fdt_next_tag(fdt, nodeoffset, &nextoffset, &pathp);
+ switch(tag) {
+ case FDT_BEGIN_NODE:
+ if(level <= depth)
+ printf("%s%s {\n",
+ &tabs[MAX_LEVEL - level], pathp);
+ level++;
+ offstack[level] = nodeoffset;
+ if (level >= MAX_LEVEL) {
+ printf("Aaaiii <splat> nested too deep. "
+ "Aborting.\n");
+ return 1;
+ }
+ break;
+ case FDT_END_NODE:
+ level--;
+ if(level <= depth)
+ printf("%s};\n", &tabs[MAX_LEVEL - level]);
+ if (level == 0) {
+ level = -1; /* exit the loop */
+ }
+ break;
+ case FDT_PROP:
+ nodep = fdt_getprop (fdt, offstack[level], pathp, &len);
+ if (len < 0) {
+ printf ("libfdt fdt_getprop(): %s\n",
+ fdt_strerror(len));
+ return 1;
+ } else if (len == 0) {
+ /* the property has no value */
+ if(level <= depth)
+ printf("%s%s;\n",
+ &tabs[MAX_LEVEL - level],
+ pathp);
+ } else {
+ if(level <= depth) {
+ printf("%s%s=",
+ &tabs[MAX_LEVEL - level],
+ pathp);
+ print_data (nodep, len);
+ printf(";\n");
+ }
+ }
+ break;
+ case FDT_NOP:
+ break;
+ case FDT_END:
+ return 1;
+ default:
+ if(level <= depth)
+ printf("Unknown tag 0x%08X\n", tag);
+ return 1;
+ }
+ nodeoffset = nextoffset;
+ }
+ return 0;
+}
+
/********************************************************************/
U_BOOT_CMD(
generated by cgit v1.1 at 2024-12-16 21:30:42 +0000