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Merge with /home/wd/git/u-boot/custodian/u-boot-fdt

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This commit is contained in:
Wolfgang Denk 2007-08-11 02:14:05 +02:00
commit 308e2b3a6c
12 changed files with 694 additions and 458 deletions
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212
common/cmd_bootm.c
View file

@ -45,8 +45,8 @@
DECLARE_GLOBAL_DATA_PTR;
/*cmd_boot.c*/
extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
/*cmd_boot.c*/
extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
#if defined(CONFIG_TIMESTAMP) || defined(CONFIG_CMD_DATE)
#include <rtc.h>
@ -362,7 +362,6 @@ int do_bootm (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
if (i != BZ_OK) {
printf ("BUNZIP2 ERROR %d - must RESET board to recover\n", i);
show_boot_progress (-6);
udelay(100000);
do_reset (cmdtp, flag, argc, argv);
}
break;
@ -741,59 +740,65 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
if(argc > 3) {
of_flat_tree = (char *) simple_strtoul(argv[3], NULL, 16);
hdr = (image_header_t *)of_flat_tree;
#if defined(CONFIG_OF_LIBFDT)
if (fdt_check_header(of_flat_tree) == 0) {
#if defined(CONFIG_OF_FLAT_TREE)
if (*((ulong *)(of_flat_tree + sizeof(image_header_t))) != OF_DT_HEADER) {
#else
if (*(ulong *)of_flat_tree == OF_DT_HEADER) {
if (fdt_check_header(of_flat_tree + sizeof(image_header_t)) != 0) {
#endif
#ifndef CFG_NO_FLASH
if (addr2info((ulong)of_flat_tree) != NULL)
of_data = (ulong)of_flat_tree;
#endif
} else if (ntohl(hdr->ih_magic) == IH_MAGIC) {
printf("## Flat Device Tree Image at %08lX\n", hdr);
printf("## Flat Device Tree at %08lX\n", hdr);
print_image_hdr(hdr);
if ((ntohl(hdr->ih_load) < ((unsigned long)hdr + ntohl(hdr->ih_size) + sizeof(hdr))) &&
((ntohl(hdr->ih_load) + ntohl(hdr->ih_size)) > (unsigned long)hdr)) {
printf ("ERROR: Load address overwrites Flat Device Tree uImage\n");
return;
puts ("ERROR: fdt overwritten - "
"must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
printf(" Verifying Checksum ... ");
puts (" Verifying Checksum ... ");
memmove (&header, (char *)hdr, sizeof(image_header_t));
checksum = ntohl(header.ih_hcrc);
header.ih_hcrc = 0;
if(checksum != crc32(0, (uchar *)&header, sizeof(image_header_t))) {
printf("ERROR: Flat Device Tree header checksum is invalid\n");
return;
puts ("ERROR: fdt header checksum invalid - "
"must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
checksum = ntohl(hdr->ih_dcrc);
addr = (ulong)((uchar *)(hdr) + sizeof(image_header_t));
if(checksum != crc32(0, (uchar *)addr, ntohl(hdr->ih_size))) {
printf("ERROR: Flat Device Tree checksum is invalid\n");
return;
puts ("ERROR: fdt checksum invalid - "
"must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
printf("OK\n");
puts ("OK\n");
if (ntohl(hdr->ih_type) != IH_TYPE_FLATDT) {
printf ("ERROR: uImage not Flat Device Tree type\n");
return;
puts ("ERROR: uImage is not a fdt - "
"must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
if (ntohl(hdr->ih_comp) != IH_COMP_NONE) {
printf("ERROR: uImage is not uncompressed\n");
return;
puts ("ERROR: uImage is compressed - "
"must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
#if defined(CONFIG_OF_LIBFDT)
if (fdt_check_header(of_flat_tree + sizeof(image_header_t)) == 0) {
#else
#if defined(CONFIG_OF_FLAT_TREE)
if (*((ulong *)(of_flat_tree + sizeof(image_header_t))) != OF_DT_HEADER) {
#else
if (fdt_check_header(of_flat_tree + sizeof(image_header_t)) != 0) {
#endif
printf ("ERROR: uImage data is not a flat device tree\n");
return;
puts ("ERROR: uImage data is not a fdt - "
"must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
memmove((void *)ntohl(hdr->ih_load),
@ -801,10 +806,11 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
ntohl(hdr->ih_size));
of_flat_tree = (char *)ntohl(hdr->ih_load);
} else {
printf ("Did not find a flat flat device tree at address %08lX\n", of_flat_tree);
return;
puts ("Did not find a flat Flat Device Tree.\n"
"Must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
printf (" Booting using flat device tree at 0x%x\n",
printf (" Booting using the fdt at 0x%x\n",
of_flat_tree);
} else if ((hdr->ih_type==IH_TYPE_MULTI) && (len_ptr[1]) && (len_ptr[2])) {
u_long tail = ntohl(len_ptr[0]) % 4;
@ -828,22 +834,24 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
of_data += 4 - tail;
}
#if defined(CONFIG_OF_LIBFDT)
if (fdt_check_header((void *)of_data) != 0) {
#if defined(CONFIG_OF_FLAT_TREE)
if (*((ulong *)(of_flat_tree + sizeof(image_header_t))) != OF_DT_HEADER) {
#else
if (((struct boot_param_header *)of_data)->magic != OF_DT_HEADER) {
if (fdt_check_header(of_flat_tree + sizeof(image_header_t)) != 0) {
#endif
printf ("ERROR: image is not a flat device tree\n");
return;
puts ("ERROR: image is not a fdt - "
"must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
#if defined(CONFIG_OF_LIBFDT)
if (be32_to_cpu(fdt_totalsize(of_data)) != ntohl(len_ptr[2])) {
#else
#if defined(CONFIG_OF_FLAT_TREE)
if (((struct boot_param_header *)of_data)->totalsize != ntohl(len_ptr[2])) {
#else
if (be32_to_cpu(fdt_totalsize(of_data)) != ntohl(len_ptr[2])) {
#endif
printf ("ERROR: flat device tree size does not agree with image\n");
return;
puts ("ERROR: fdt size != image size - "
"must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
}
#endif
@ -916,15 +924,6 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
initrd_end = 0;
}
debug ("## Transferring control to Linux (at address %08lx) ...\n",
(ulong)kernel);
show_boot_progress (15);
#if defined(CFG_INIT_RAM_LOCK) && !defined(CONFIG_E500)
unlock_ram_in_cache();
#endif
#if defined(CONFIG_OF_LIBFDT)
/* move of_flat_tree if needed */
if (of_data) {
@ -944,32 +943,41 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
of_flat_tree = (char *)of_start;
printf (" Loading Device Tree to %08lx, end %08lx ... ",
of_start, of_start + of_len - 1);
err = fdt_open_into((void *)of_start, (void *)of_data, of_len);
err = fdt_open_into((void *)of_data, (void *)of_start, of_len);
if (err != 0) {
printf ("libfdt: %s " __FILE__ " %d\n", fdt_strerror(err), __LINE__);
}
/*
* Add the chosen node if it doesn't exist, add the env and bd_t
* if the user wants it (the logic is in the subroutines).
*/
if (fdt_chosen(of_flat_tree, initrd_start, initrd_end, 0) < 0) {
printf("Failed creating the /chosen node (0x%08X), aborting.\n", of_flat_tree);
return;
puts ("ERROR: fdt move failed - "
"must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
}
/*
* Add the chosen node if it doesn't exist, add the env and bd_t
* if the user wants it (the logic is in the subroutines).
*/
if (fdt_chosen(of_flat_tree, initrd_start, initrd_end, 0) < 0) {
puts ("ERROR: /chosen node create failed - "
"must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
#ifdef CONFIG_OF_HAS_UBOOT_ENV
if (fdt_env(of_flat_tree) < 0) {
printf("Failed creating the /u-boot-env node, aborting.\n");
return;
}
#endif
#ifdef CONFIG_OF_HAS_BD_T
if (fdt_bd_t(of_flat_tree) < 0) {
printf("Failed creating the /bd_t node, aborting.\n");
return;
}
#endif
if (fdt_env(of_flat_tree) < 0) {
puts ("ERROR: /u-boot-env node create failed - "
"must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
#endif
#ifdef CONFIG_OF_HAS_BD_T
if (fdt_bd_t(of_flat_tree) < 0) {
puts ("ERROR: /bd_t node create failed - "
"must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
#endif
#ifdef CONFIG_OF_BOARD_SETUP
/* Call the board-specific fixup routine */
ft_board_setup(of_flat_tree, gd->bd);
#endif
#endif /* CONFIG_OF_LIBFDT */
#if defined(CONFIG_OF_FLAT_TREE)
/* move of_flat_tree if needed */
if (of_data) {
@ -989,8 +997,36 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
of_start, of_start + of_len - 1);
memmove ((void *)of_start, (void *)of_data, of_len);
}
/*
* Create the /chosen node and modify the blob with board specific
* values as needed.
*/
ft_setup(of_flat_tree, kbd, initrd_start, initrd_end);
/* ft_dump_blob(of_flat_tree); */
#endif
debug ("## Transferring control to Linux (at address %08lx) ...\n",
(ulong)kernel);
show_boot_progress (15);
#if defined(CFG_INIT_RAM_LOCK) && !defined(CONFIG_E500)
unlock_ram_in_cache();
#endif
#if defined(CONFIG_OF_FLAT_TREE) || defined(CONFIG_OF_LIBFDT)
if (of_flat_tree) { /* device tree; boot new style */
/*
* Linux Kernel Parameters (passing device tree):
* r3: pointer to the fdt, followed by the board info data
* r4: physical pointer to the kernel itself
* r5: NULL
* r6: NULL
* r7: NULL
*/
(*kernel) ((bd_t *)of_flat_tree, (ulong)kernel, 0, 0, 0);
/* does not return */
}
#endif
/*
* Linux Kernel Parameters (passing board info data):
* r3: ptr to board info data
@ -999,46 +1035,8 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
* r6: Start of command line string
* r7: End of command line string
*/
#if defined(CONFIG_OF_FLAT_TREE) || defined(CONFIG_OF_LIBFDT)
if (!of_flat_tree) /* no device tree; boot old style */
#endif
(*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end);
/* does not return */
#if defined(CONFIG_OF_FLAT_TREE) || defined(CONFIG_OF_LIBFDT)
/*
* Linux Kernel Parameters (passing device tree):
* r3: ptr to OF flat tree, followed by the board info data
* r4: physical pointer to the kernel itself
* r5: NULL
* r6: NULL
* r7: NULL
*/
#if defined(CONFIG_OF_FLAT_TREE)
ft_setup(of_flat_tree, kbd, initrd_start, initrd_end);
/* ft_dump_blob(of_flat_tree); */
#endif
#if defined(CONFIG_OF_LIBFDT)
if (fdt_chosen(of_flat_tree, initrd_start, initrd_end, 0) < 0) {
printf("Failed creating the /chosen node (0x%08X), aborting.\n", of_flat_tree);
return;
}
#ifdef CONFIG_OF_HAS_UBOOT_ENV
if (fdt_env(of_flat_tree) < 0) {
printf("Failed creating the /u-boot-env node, aborting.\n");
return;
}
#endif
#ifdef CONFIG_OF_HAS_BD_T
if (fdt_bd_t(of_flat_tree) < 0) {
printf("Failed creating the /bd_t node, aborting.\n");
return;
}
#endif
#endif /* if defined(CONFIG_OF_LIBFDT) */
(*kernel) ((bd_t *)of_flat_tree, (ulong)kernel, 0, 0, 0);
#endif
(*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end);
/* does not return */
}
#endif /* CONFIG_PPC */

625
common/cmd_fdt.c
View file

@ -37,46 +37,32 @@
#include <fdt_support.h>
#define MAX_LEVEL 32 /* how deeply nested we will go */
#define SCRATCHPAD 1024 /* bytes of scratchpad memory */
#define SCRATCHPAD 1024 /* bytes of scratchpad memory */
/*
* Global data (for the gd->bd)
*/
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);
/*
* Flattened Device Tree command, see the help for parameter definitions.
*/
int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
{
char op;
if (argc < 2) {
printf ("Usage:\n%s\n", cmdtp->usage);
return 1;
}
/*
* Figure out which subcommand was given
*/
op = argv[1][0];
/********************************************************************
* Set the address of the fdt
********************************************************************/
if (op == 'a') {
if (argv[1][0] == 'a') {
/*
* Set the address [and length] of the fdt.
*/
@ -94,7 +80,8 @@ 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 {
/*
@ -102,7 +89,8 @@ 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: %s\n", fdt_strerror(err));
printf ("libfdt fdt_open_into(): %s\n",
fdt_strerror(err));
}
}
}
@ -110,12 +98,12 @@ int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
/********************************************************************
* Move the fdt
********************************************************************/
} else if (op == 'm') {
} else if ((argv[1][0] == 'm') && (argv[1][1] == 'o')) {
struct fdt_header *newaddr;
int len;
int err;
if (argc != 5) {
if (argc < 4) {
printf ("Usage:\n%s\n", cmdtp->usage);
return 1;
}
@ -128,12 +116,22 @@ 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);
len = simple_strtoul(argv[4], NULL, 16);
if (len < fdt_totalsize(fdt)) {
printf ("New length %d < existing length %d, aborting.\n",
len, fdt_totalsize(fdt));
return 1;
newaddr = (struct fdt_header *)simple_strtoul(argv[3],NULL,16);
/*
* If the user specifies a length, use that. Otherwise use the
* current length.
*/
if (argc <= 4) {
len = fdt_totalsize(fdt);
} else {
len = simple_strtoul(argv[4], NULL, 16);
if (len < fdt_totalsize(fdt)) {
printf ("New length 0x%X < existing length "
"0x%X, aborting.\n",
len, fdt_totalsize(fdt));
return 1;
}
}
/*
@ -141,26 +139,59 @@ 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: %s\n", fdt_strerror(err));
printf ("libfdt fdt_open_into(): %s\n",
fdt_strerror(err));
return 1;
}
fdt = newaddr;
/********************************************************************
* Set the value of a node in the fdt.
* Make a new node
********************************************************************/
} else if (op == 's') {
} else if ((argv[1][0] == 'm') && (argv[1][1] == 'k')) {
char *pathp; /* path */
char *prop; /* property */
struct fdt_property *nodep; /* node struct pointer */
char *newval; /* value from the user (as a string) */
char *vp; /* temporary value pointer */
char *cp; /* temporary char pointer */
char *nodep; /* new node to add */
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 */
int err;
/*
* Parameters: Node path, new node to be appended to the path.
*/
if (argc < 4) {
printf ("Usage:\n%s\n", cmdtp->usage);
return 1;
}
pathp = argv[2];
nodep = argv[3];
nodeoffset = fdt_find_node_by_path (fdt, pathp);
if (nodeoffset < 0) {
/*
* Not found or something else bad happened.
*/
printf ("libfdt fdt_find_node_by_path() returned %s\n",
fdt_strerror(nodeoffset));
return 1;
}
err = fdt_add_subnode(fdt, nodeoffset, nodep);
if (err < 0) {
printf ("libfdt fdt_add_subnode(): %s\n",
fdt_strerror(err));
return 1;
}
/********************************************************************
* Set the value of a property in the fdt.
********************************************************************/
} else if (argv[1][0] == 's') {
char *pathp; /* path */
char *prop; /* property */
char *newval; /* value from the user (as a string) */
int nodeoffset; /* node offset from libfdt */
static char data[SCRATCHPAD]; /* storage for the property */
int len; /* new length of the property */
int ret; /* return value */
/*
* Parameters: Node path, property, value.
@ -174,121 +205,38 @@ int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
prop = argv[3];
newval = argv[4];
if (strcmp(pathp, "/") == 0) {
nodeoffset = 0;
} else {
nodeoffset = fdt_path_offset (fdt, pathp);
if (nodeoffset < 0) {
/*
* Not found or something else bad happened.
*/
printf ("libfdt: %s\n", fdt_strerror(nodeoffset));
return 1;
}
nodeoffset = fdt_find_node_by_path (fdt, pathp);
if (nodeoffset < 0) {
/*
* Not found or something else bad happened.
*/
printf ("libfdt fdt_find_node_by_path() returned %s\n",
fdt_strerror(nodeoffset));
return 1;
}
nodep = fdt_getprop (fdt, nodeoffset, prop, &oldlen);
if (oldlen < 0) {
printf ("libfdt %s\n", fdt_strerror(oldlen));
return 1;
} else if (oldlen == 0) {
/*
* The specified property has no value
*/
printf("%s has no value, cannot set one (yet).\n", prop);
return 1;
} else {
/*
* 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) {
printf ("libfdt %s\n", fdt_strerror(ret));
return 1;
}
ret = fdt_setprop(fdt, nodeoffset, prop, data, len);
if (ret < 0) {
printf ("libfdt fdt_setprop(): %s\n", fdt_strerror(ret));
return 1;
}
/********************************************************************
* Print (recursive) / List (single level)
********************************************************************/
} else if ((op == 'p') || (op == '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";
} else if ((argv[1][0] == 'p') || (argv[1][0] == 'l')) {
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
*/
if (op == 'l') {
if (argv[1][0] == 'l') {
depth = 1;
}
@ -302,99 +250,14 @@ int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
else
prop = NULL;
if (strcmp(pathp, "/") == 0) {
nodeoffset = 0;
printf("/");
} else {
nodeoffset = fdt_path_offset (fdt, pathp);
if (nodeoffset < 0) {
/*
* Not found or something else bad happened.
*/
printf ("libfdt %s\n", fdt_strerror(nodeoffset));
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 %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.\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 %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
********************************************************************/
} else if (op == 'r') {
} else if (argv[1][0] == 'r') {
int nodeoffset; /* node offset from libfdt */
int err;
@ -402,17 +265,14 @@ int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
* Get the path. The root node is an oddball, the offset
* is zero and has no name.
*/
if (strcmp(argv[2], "/") == 0) {
nodeoffset = 0;
} else {
nodeoffset = fdt_path_offset (fdt, argv[2]);
if (nodeoffset < 0) {
/*
* Not found or something else bad happened.
*/
printf ("libfdt %s\n", fdt_strerror(nodeoffset));
return 1;
}
nodeoffset = fdt_find_node_by_path (fdt, argv[2]);
if (nodeoffset < 0) {
/*
* Not found or something else bad happened.
*/
printf ("libfdt fdt_find_node_by_path() returned %s\n",
fdt_strerror(nodeoffset));
return 1;
}
/*
* Do the delete. A fourth parameter means delete a property,
@ -421,39 +281,40 @@ 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("fdt_delprop libfdt: %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("fdt_del_node libfdt: %s\n", fdt_strerror(err));
printf("libfdt fdt_del_node(): %s\n",
fdt_strerror(err));
return err;
}
}
/********************************************************************
* Create a chosen node
********************************************************************/
} else if (op == 'c') {
}
#ifdef CONFIG_OF_BOARD_SETUP
/* Call the board-specific fixup routine */
else if (argv[1][0] == 'b')
ft_board_setup(fdt, gd->bd);
#endif
/* Create a chosen node */
else if (argv[1][0] == 'c')
fdt_chosen(fdt, 0, 0, 1);
/********************************************************************
* Create a u-boot-env node
********************************************************************/
} else if (op == 'e') {
#ifdef CONFIG_OF_HAS_UBOOT_ENV
/* Create a u-boot-env node */
else if (argv[1][0] == 'e')
fdt_env(fdt);
/********************************************************************
* Create a bd_t node
********************************************************************/
} else if (op == 'b') {
#endif
#ifdef CONFIG_OF_HAS_BD_T
/* Create a bd_t node */
else if (argv[1][0] == 'b')
fdt_bd_t(fdt);
/********************************************************************
* Unrecognized command
********************************************************************/
} else {
#endif
else {
/* Unrecognized command */
printf ("Usage:\n%s\n", cmdtp->usage);
return 1;
}
@ -461,7 +322,7 @@ int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
return 0;
}
/********************************************************************/
/****************************************************************************/
static int fdt_valid(void)
{
@ -477,19 +338,21 @@ static int fdt_valid(void)
return 1; /* valid */
if (err < 0) {
printf("libfdt: %s", fdt_strerror(err));
printf("libfdt fdt_check_header(): %s", fdt_strerror(err));
/*
* Be more informative on bad version.
*/
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;
@ -500,13 +363,91 @@ 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 = *len + 1;
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)
@ -546,6 +487,12 @@ 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;
@ -601,32 +548,146 @@ 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 = fdt_find_node_by_path (fdt, pathp);
if (nodeoffset < 0) {
/*
* Not found or something else bad happened.
*/
printf ("libfdt fdt_find_node_by_path() returned %s\n",
fdt_strerror(nodeoffset));
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(
fdt, 5, 0, do_fdt,
"fdt - flattened device tree utility commands\n",
"addr <addr> [<length>] - Set the fdt location to <addr>\n"
#ifdef CONFIG_OF_BOARD_SETUP
"fdt boardsetup - Do board-specific set up\n"
#endif
"fdt move <fdt> <newaddr> <length> - Copy the fdt to <addr>\n"
"fdt print <path> [<prop>] - Recursive print starting at <path>\n"
"fdt list <path> [<prop>] - Print one level starting at <path>\n"
"fdt set <path> <prop> [<val>] - Set <property> [to <val>]\n"
"fdt mknode <path> <node> - Create a new node after <path>\n"
"fdt rm <path> [<prop>] - Delete the node or <property>\n"
"fdt chosen - Add/update the \"/chosen\" branch in the tree\n"
"fdt chosen - Add/update the /chosen branch in the tree\n"
#ifdef CONFIG_OF_HAS_UBOOT_ENV
"fdt env - Add/replace the \"/u-boot-env\" branch in the tree\n"
"fdt env - Add/replace the /u-boot-env branch in the tree\n"
#endif
#ifdef CONFIG_OF_HAS_BD_T
"fdt bd_t - Add/replace the \"/bd_t\" branch in the tree\n"
"fdt bd_t - Add/replace the /bd_t branch in the tree\n"
#endif
"Hints:\n"
" * Set a larger length with the fdt addr command to add to the blob.\n"
" * If the property you are setting/printing has a '#' character,\n"
" you MUST escape it with a \\ character or quote it with \" or\n"
" it will be ignored as a comment.\n"
" * If the value has spaces in it, you MUST escape the spaces with\n"
" \\ characters or quote it with \"\"\n"
" If the property you are setting/printing has a '#' character or spaces,\n"
" you MUST escape it with a \\ character or quote it with \".\n"
"Examples: fdt print / # print the whole tree\n"
" fdt print /cpus \"#address-cells\"\n"
" fdt set /cpus \"#address-cells\" \"[00 00 00 01]\"\n"

101
common/fdt_support.c
View file

@ -37,6 +37,10 @@
*/
DECLARE_GLOBAL_DATA_PTR;
/*
* fdt points to our working device tree.
*/
struct fdt_header *fdt;
/********************************************************************/
@ -45,13 +49,12 @@ int fdt_chosen(void *fdt, ulong initrd_start, ulong initrd_end, int force)
bd_t *bd = gd->bd;
int nodeoffset;
int err;
u32 tmp; /* used to set 32 bit integer properties */
char *str; /* used to set string properties */
ulong clock;
u32 tmp; /* used to set 32 bit integer properties */
char *str; /* used to set string properties */
err = fdt_check_header(fdt);
if (err < 0) {
printf("libfdt: %s\n", fdt_strerror(err));
printf("fdt_chosen: %s\n", fdt_strerror(err));
return err;
}
@ -63,11 +66,12 @@ int fdt_chosen(void *fdt, ulong initrd_start, ulong initrd_end, int force)
err = fdt_num_reservemap(fdt, &used, &total);
if (err < 0) {
printf("libfdt: %s\n", fdt_strerror(err));
printf("fdt_chosen: %s\n", fdt_strerror(err));
return err;
}
if (used >= total) {
printf("fdt_chosen: no room in the reserved map (%d of %d)\n",
printf("WARNING: "
"no room in the reserved map (%d of %d)\n",
used, total);
return -1;
}
@ -84,7 +88,7 @@ int fdt_chosen(void *fdt, ulong initrd_start, ulong initrd_end, int force)
err = fdt_replace_reservemap_entry(fdt, j,
initrd_start, initrd_end - initrd_start + 1);
if (err < 0) {
printf("libfdt: %s\n", fdt_strerror(err));
printf("fdt_chosen: %s\n", fdt_strerror(err));
return err;
}
}
@ -92,7 +96,7 @@ int fdt_chosen(void *fdt, ulong initrd_start, ulong initrd_end, int force)
/*
* Find the "chosen" node.
*/
nodeoffset = fdt_path_offset (fdt, "/chosen");
nodeoffset = fdt_find_node_by_path (fdt, "/chosen");
/*
* If we have a "chosen" node already the "force the writing"
@ -110,7 +114,8 @@ int fdt_chosen(void *fdt, ulong initrd_start, ulong initrd_end, int force)
*/
nodeoffset = fdt_add_subnode(fdt, 0, "chosen");
if (nodeoffset < 0) {
printf("libfdt: %s\n", fdt_strerror(nodeoffset));
printf("WARNING: could not create /chosen %s.\n",
fdt_strerror(nodeoffset));
return nodeoffset;
}
}
@ -120,42 +125,35 @@ int fdt_chosen(void *fdt, ulong initrd_start, ulong initrd_end, int force)
*/
str = getenv("bootargs");
if (str != NULL) {
err = fdt_setprop(fdt, nodeoffset, "bootargs", str, strlen(str)+1);
err = fdt_setprop(fdt, nodeoffset,
"bootargs", str, strlen(str)+1);
if (err < 0)
printf("libfdt: %s\n", fdt_strerror(err));
printf("WARNING: could not set bootargs %s.\n",
fdt_strerror(err));
}
if (initrd_start && initrd_end) {
tmp = __cpu_to_be32(initrd_start);
err = fdt_setprop(fdt, nodeoffset, "linux,initrd-start", &tmp, sizeof(tmp));
err = fdt_setprop(fdt, nodeoffset,
"linux,initrd-start", &tmp, sizeof(tmp));
if (err < 0)
printf("libfdt: %s\n", fdt_strerror(err));
printf("WARNING: "
"could not set linux,initrd-start %s.\n",
fdt_strerror(err));
tmp = __cpu_to_be32(initrd_end);
err = fdt_setprop(fdt, nodeoffset, "linux,initrd-end", &tmp, sizeof(tmp));
err = fdt_setprop(fdt, nodeoffset,
"linux,initrd-end", &tmp, sizeof(tmp));
if (err < 0)
printf("libfdt: %s\n", fdt_strerror(err));
printf("WARNING: could not set linux,initrd-end %s.\n",
fdt_strerror(err));
}
#ifdef OF_STDOUT_PATH
err = fdt_setprop(fdt, nodeoffset, "linux,stdout-path", OF_STDOUT_PATH, strlen(OF_STDOUT_PATH)+1);
err = fdt_setprop(fdt, nodeoffset,
"linux,stdout-path", OF_STDOUT_PATH, strlen(OF_STDOUT_PATH)+1);
if (err < 0)
printf("libfdt: %s\n", fdt_strerror(err));
printf("WARNING: could not set linux,stdout-path %s.\n",
fdt_strerror(err));
#endif
nodeoffset = fdt_path_offset (fdt, "/cpus");
if (nodeoffset >= 0) {
clock = cpu_to_be32(bd->bi_intfreq);
err = fdt_setprop(fdt, nodeoffset, "clock-frequency", &clock, 4);
if (err < 0)
printf("libfdt: %s\n", fdt_strerror(err));
}
#ifdef OF_TBCLK
nodeoffset = fdt_path_offset (fdt, "/cpus/" OF_CPU "/timebase-frequency");
if (nodeoffset >= 0) {
clock = cpu_to_be32(OF_TBCLK);
err = fdt_setprop(fdt, nodeoffset, "clock-frequency", &clock, 4);
if (err < 0)
printf("libfdt: %s\n", fdt_strerror(err));
}
#endif
return err;
}
@ -177,7 +175,7 @@ int fdt_env(void *fdt)
err = fdt_check_header(fdt);
if (err < 0) {
printf("libfdt: %s\n", fdt_strerror(err));
printf("fdt_env: %s\n", fdt_strerror(err));
return err;
}
@ -185,11 +183,11 @@ int fdt_env(void *fdt)
* See if we already have a "u-boot-env" node, delete it if so.
* Then create a new empty node.
*/
nodeoffset = fdt_path_offset (fdt, "/u-boot-env");
nodeoffset = fdt_find_node_by_path (fdt, "/u-boot-env");
if (nodeoffset >= 0) {
err = fdt_del_node(fdt, nodeoffset);
if (err < 0) {
printf("libfdt: %s\n", fdt_strerror(err));
printf("fdt_env: %s\n", fdt_strerror(err));
return err;
}
}
@ -198,7 +196,8 @@ int fdt_env(void *fdt)
*/
nodeoffset = fdt_add_subnode(fdt, 0, "u-boot-env");
if (nodeoffset < 0) {
printf("libfdt: %s\n", fdt_strerror(nodeoffset));
printf("WARNING: could not create /u-boot-env %s.\n",
fdt_strerror(nodeoffset));
return nodeoffset;
}
@ -226,7 +225,8 @@ int fdt_env(void *fdt)
continue;
err = fdt_setprop(fdt, nodeoffset, lval, rval, strlen(rval)+1);
if (err < 0) {
printf("libfdt: %s\n", fdt_strerror(err));
printf("WARNING: could not set %s %s.\n",
lval, fdt_strerror(err));
return err;
}
}
@ -292,12 +292,12 @@ int fdt_bd_t(void *fdt)
bd_t *bd = gd->bd;
int nodeoffset;
int err;
u32 tmp; /* used to set 32 bit integer properties */
u32 tmp; /* used to set 32 bit integer properties */
int i;
err = fdt_check_header(fdt);
if (err < 0) {
printf("libfdt: %s\n", fdt_strerror(err));
printf("fdt_bd_t: %s\n", fdt_strerror(err));
return err;
}
@ -305,11 +305,11 @@ int fdt_bd_t(void *fdt)
* See if we already have a "bd_t" node, delete it if so.
* Then create a new empty node.
*/
nodeoffset = fdt_path_offset (fdt, "/bd_t");
nodeoffset = fdt_find_node_by_path (fdt, "/bd_t");
if (nodeoffset >= 0) {
err = fdt_del_node(fdt, nodeoffset);
if (err < 0) {
printf("libfdt: %s\n", fdt_strerror(err));
printf("fdt_bd_t: %s\n", fdt_strerror(err));
return err;
}
}
@ -318,7 +318,9 @@ int fdt_bd_t(void *fdt)
*/
nodeoffset = fdt_add_subnode(fdt, 0, "bd_t");
if (nodeoffset < 0) {
printf("libfdt: %s\n", fdt_strerror(nodeoffset));
printf("WARNING: could not create /bd_t %s.\n",
fdt_strerror(nodeoffset));
printf("fdt_bd_t: %s\n", fdt_strerror(nodeoffset));
return nodeoffset;
}
/*
@ -326,20 +328,23 @@ int fdt_bd_t(void *fdt)
*/
for (i = 0; i < sizeof(bd_map)/sizeof(bd_map[0]); i++) {
tmp = cpu_to_be32(getenv("bootargs"));
err = fdt_setprop(fdt, nodeoffset, bd_map[i].name, &tmp, sizeof(tmp));
err = fdt_setprop(fdt, nodeoffset,
bd_map[i].name, &tmp, sizeof(tmp));
if (err < 0)
printf("libfdt: %s\n", fdt_strerror(err));
printf("WARNING: could not set %s %s.\n",
bd_map[i].name, fdt_strerror(err));
}
/*
* Add a couple of oddball entries...
*/
err = fdt_setprop(fdt, nodeoffset, "enetaddr", &bd->bi_enetaddr, 6);
if (err < 0)
printf("libfdt: %s\n", fdt_strerror(err));
printf("WARNING: could not set enetaddr %s.\n",
fdt_strerror(err));
err = fdt_setprop(fdt, nodeoffset, "ethspeed", &bd->bi_ethspeed, 4);
if (err < 0)
printf("libfdt: %s\n", fdt_strerror(err));
printf("WARNING: could not set ethspeed %s.\n",
fdt_strerror(err));
return 0;
}
#endif /* ifdef CONFIG_OF_HAS_BD_T */

6
include/fdt_support.h
View file

@ -38,5 +38,11 @@ int fdt_env(void *fdt);
int fdt_bd_t(void *fdt);
#endif
#ifdef CONFIG_OF_BOARD_SETUP
void ft_board_setup(void *blob, bd_t *bd);
void ft_cpu_setup(void *blob, bd_t *bd);
void ft_pci_setup(void *blob, bd_t *bd);
#endif
#endif /* ifdef CONFIG_OF_LIBFDT */
#endif /* ifndef __FDT_SUPPORT_H */

8
include/libfdt.h
View file

@ -77,7 +77,13 @@ int fdt_subnode_offset_namelen(const void *fdt, int parentoffset,
const char *name, int namelen);
int fdt_subnode_offset(const void *fdt, int parentoffset, const char *name);
int fdt_path_offset(const void *fdt, const char *path);
int fdt_find_node_by_path(const void *fdt, const char *path);
int fdt_find_node_by_type(const void *fdt, int nodeoffset, const char *type);
int fdt_node_is_compatible(const void *fdt, int nodeoffset,
const char *compat);
int fdt_find_compatible_node(const void *fdt, int nodeoffset,
const char *type, const char *compat);
struct fdt_property *fdt_get_property(const void *fdt, int nodeoffset,
const char *name, int *lenp);

2
include/libfdt_env.h
View file

@ -26,7 +26,7 @@
#include <asm/byteorder.h>
#include <linux/string.h>
struct fdt_header *fdt; /* Pointer to the working fdt */
extern struct fdt_header *fdt; /* Pointer to the working fdt */
#define fdt32_to_cpu(x) __be32_to_cpu(x)
#define cpu_to_fdt32(x) __cpu_to_be32(x)

5
libfdt/fdt.c
View file

@ -16,6 +16,9 @@
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#if CONFIG_OF_LIBFDT
#include "libfdt_env.h"
#include <fdt.h>
@ -83,3 +86,5 @@ int fdt_move(const void *fdt, void *buf, int bufsize)
memmove(buf, fdt, fdt_totalsize(fdt));
return 0;
}
#endif /* CONFIG_OF_LIBFDT */

173
libfdt/fdt_ro.c
View file

@ -16,6 +16,9 @@
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#if CONFIG_OF_LIBFDT
#include "libfdt_env.h"
#include <fdt.h>
@ -47,6 +50,33 @@ static int offset_streq(const void *fdt, int offset,
return 1;
}
/*
* Checks if the property name matches.
*/
static int prop_name_eq(const void *fdt, int offset, const char *name,
struct fdt_property **prop, int *lenp)
{
int namestroff, len;
*prop = fdt_offset_ptr_typed(fdt, offset, *prop);
if (! *prop)
return -FDT_ERR_BADSTRUCTURE;
namestroff = fdt32_to_cpu((*prop)->nameoff);
if (streq(fdt_string(fdt, namestroff), name)) {
len = fdt32_to_cpu((*prop)->len);
*prop = fdt_offset_ptr(fdt, offset,
sizeof(**prop) + len);
if (*prop) {
if (lenp)
*lenp = len;
return 1;
} else
return -FDT_ERR_BADSTRUCTURE;
}
return 0;
}
/*
* Return a pointer to the string at the given string offset.
*/
@ -55,6 +85,118 @@ char *fdt_string(const void *fdt, int stroffset)
return (char *)fdt + fdt_off_dt_strings(fdt) + stroffset;
}
/*
* Check if the specified node is compatible by comparing the tokens
* in its "compatible" property with the specified string:
*
* nodeoffset - starting place of the node
* compat - the string to match to one of the tokens in the
* "compatible" list.
*/
int fdt_node_is_compatible(const void *fdt, int nodeoffset,
const char *compat)
{
const char* cp;
int cplen, len;
cp = fdt_getprop(fdt, nodeoffset, "compatible", &cplen);
if (cp == NULL)
return 0;
while (cplen > 0) {
if (strncmp(cp, compat, strlen(compat)) == 0)
return 1;
len = strlen(cp) + 1;
cp += len;
cplen -= len;
}
return 0;
}
/*
* Find a node by its device type property. On success, the offset of that
* node is returned or an error code otherwise:
*
* nodeoffset - the node to start searching from or 0, the node you pass
* will not be searched, only the next one will; typically,
* you pass 0 to start the search and then what the previous
* call returned.
* type - the device type string to match against.
*/
int fdt_find_node_by_type(const void *fdt, int nodeoffset, const char *type)
{
int offset, nextoffset;
struct fdt_property *prop;
uint32_t tag;
int len, ret;
CHECK_HEADER(fdt);
tag = fdt_next_tag(fdt, nodeoffset, &nextoffset, NULL);
if (tag != FDT_BEGIN_NODE)
return -FDT_ERR_BADOFFSET;
if (nodeoffset)
nodeoffset = 0; /* start searching with next node */
while (1) {
offset = nextoffset;
tag = fdt_next_tag(fdt, offset, &nextoffset, NULL);
switch (tag) {
case FDT_BEGIN_NODE:
nodeoffset = offset;
break;
case FDT_PROP:
if (nodeoffset == 0)
break;
ret = prop_name_eq(fdt, offset, "device_type",
&prop, &len);
if (ret < 0)
return ret;
else if (ret > 0 &&
strncmp(prop->data, type, len - 1) == 0)
return nodeoffset;
break;
case FDT_END_NODE:
case FDT_NOP:
break;
case FDT_END:
return -FDT_ERR_NOTFOUND;
default:
return -FDT_ERR_BADSTRUCTURE;
}
}
}
/*
* Find a node based on its device type and one of the tokens in its its
* "compatible" property. On success, the offset of that node is returned
* or an error code otherwise:
*
* nodeoffset - the node to start searching from or 0, the node you pass
* will not be searched, only the next one will; typically,
* you pass 0 to start the search and then what the previous
* call returned.
* type - the device type string to match against.
* compat - the string to match to one of the tokens in the
* "compatible" list.
*/
int fdt_find_compatible_node(const void *fdt, int nodeoffset,
const char *type, const char *compat)
{
int offset;
offset = fdt_find_node_by_type(fdt, nodeoffset, type);
if (offset < 0 || fdt_node_is_compatible(fdt, offset, compat))
return offset;
return -FDT_ERR_NOTFOUND;
}
/*
* Return the node offset of the node specified by:
* parentoffset - starting place (0 to start at the root)
@ -129,7 +271,7 @@ int fdt_subnode_offset(const void *fdt, int parentoffset,
* Searches for the node corresponding to the given path and returns the
* offset of that node.
*/
int fdt_path_offset(const void *fdt, const char *path)
int fdt_find_node_by_path(const void *fdt, const char *path)
{
const char *end = path + strlen(path);
const char *p = path;
@ -141,6 +283,10 @@ int fdt_path_offset(const void *fdt, const char *path)
if (*path != '/')
return -FDT_ERR_BADPATH;
/* Handle the root path: root offset is 0 */
if (strcmp(path, "/") == 0)
return 0;
while (*p) {
const char *q;
@ -184,7 +330,6 @@ struct fdt_property *fdt_get_property(const void *fdt,
int level = 0;
uint32_t tag;
struct fdt_property *prop;
int namestroff;
int offset, nextoffset;
int err;
@ -224,24 +369,11 @@ struct fdt_property *fdt_get_property(const void *fdt,
if (level != 0)
continue;
err = -FDT_ERR_BADSTRUCTURE;
prop = fdt_offset_ptr_typed(fdt, offset, prop);
if (! prop)
goto fail;
namestroff = fdt32_to_cpu(prop->nameoff);
if (streq(fdt_string(fdt, namestroff), name)) {
/* Found it! */
int len = fdt32_to_cpu(prop->len);
prop = fdt_offset_ptr(fdt, offset,
sizeof(*prop)+len);
if (! prop)
goto fail;
if (lenp)
*lenp = len;
err = prop_name_eq(fdt, offset, name, &prop, lenp);
if (err > 0)
return prop;
}
else if (err < 0)
goto fail;
break;
case FDT_NOP:
@ -400,3 +532,6 @@ int fdt_get_reservemap(void *fdt, int n, struct fdt_reserve_entry *re)
}
return 0;
}
#endif /* CONFIG_OF_LIBFDT */

5
libfdt/fdt_rw.c
View file

@ -16,6 +16,9 @@
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#if CONFIG_OF_LIBFDT
#include "libfdt_env.h"
#include <fdt.h>
@ -291,3 +294,5 @@ int fdt_pack(void *fdt)
fdt_set_header(fdt, totalsize, _blob_data_size(fdt));
return 0;
}
#endif /* CONFIG_OF_LIBFDT */

5
libfdt/fdt_strerror.c
View file

@ -16,6 +16,9 @@
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#if CONFIG_OF_LIBFDT
#include "libfdt_env.h"
#include <fdt.h>
@ -62,3 +65,5 @@ const char *fdt_strerror(int errval)
return "<unknown error>";
}
#endif /* CONFIG_OF_LIBFDT */

5
libfdt/fdt_sw.c
View file

@ -16,6 +16,9 @@
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#if CONFIG_OF_LIBFDT
#include "libfdt_env.h"
#include <fdt.h>
@ -224,3 +227,5 @@ int fdt_finish(void *fdt)
fdt_set_header(fdt, magic, FDT_MAGIC);
return 0;
}
#endif /* CONFIG_OF_LIBFDT */

5
libfdt/fdt_wip.c
View file

@ -16,6 +16,9 @@
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#if CONFIG_OF_LIBFDT
#include "libfdt_env.h"
#include <fdt.h>
@ -135,3 +138,5 @@ int fdt_replace_reservemap_entry(void *fdt, int n, uint64_t addr, uint64_t size)
return 0;
}
#endif /* CONFIG_OF_LIBFDT */