Example #1
0
static int _fdt_sw_check_header(void *fdt)
{
	if (fdt_magic(fdt) != FDT_SW_MAGIC)
		return -FDT_ERR_BADMAGIC;
	/* FIXME: should check more details about the header state */
	return 0;
}
static int _fdt_sw_check_header(void *fdt)
{
	if (fdt_magic(fdt) != FDT_SW_MAGIC)
		return -FDT_ERR_BADMAGIC;
	
	return 0;
}
Example #3
0
int fdt_check_header(const void *fdt)
{
	if (fdt_magic(fdt) == FDT_MAGIC) {
		/* Complete tree */
		if (fdt_version(fdt) < FDT_FIRST_SUPPORTED_VERSION)
			return -FDT_ERR_BADVERSION;
		if (fdt_last_comp_version(fdt) > FDT_LAST_SUPPORTED_VERSION)
			return -FDT_ERR_BADVERSION;
	} else if (fdt_magic(fdt) == FDT_SW_MAGIC) {
		/* Unfinished sequential-write blob */
		if (fdt_size_dt_struct(fdt) == 0)
			return -FDT_ERR_BADSTATE;
	} else {
		return -FDT_ERR_BADMAGIC;
	}

	return 0;
}
Example #4
0
File: fdt.c Project: acton393/linux
/**
 * __unflatten_device_tree - create tree of device_nodes from flat blob
 *
 * unflattens a device-tree, creating the
 * tree of struct device_node. It also fills the "name" and "type"
 * pointers of the nodes so the normal device-tree walking functions
 * can be used.
 * @blob: The blob to expand
 * @dad: Parent device node
 * @mynodes: The device_node tree created by the call
 * @dt_alloc: An allocator that provides a virtual address to memory
 * for the resulting tree
 *
 * Returns NULL on failure or the memory chunk containing the unflattened
 * device tree on success.
 */
static void *__unflatten_device_tree(const void *blob,
				     struct device_node *dad,
				     struct device_node **mynodes,
				     void *(*dt_alloc)(u64 size, u64 align),
				     bool detached)
{
	int size;
	void *mem;

	pr_debug(" -> unflatten_device_tree()\n");

	if (!blob) {
		pr_debug("No device tree pointer\n");
		return NULL;
	}

	pr_debug("Unflattening device tree:\n");
	pr_debug("magic: %08x\n", fdt_magic(blob));
	pr_debug("size: %08x\n", fdt_totalsize(blob));
	pr_debug("version: %08x\n", fdt_version(blob));

	if (fdt_check_header(blob)) {
		pr_err("Invalid device tree blob header\n");
		return NULL;
	}

	/* First pass, scan for size */
	size = unflatten_dt_nodes(blob, NULL, dad, NULL);
	if (size < 0)
		return NULL;

	size = ALIGN(size, 4);
	pr_debug("  size is %d, allocating...\n", size);

	/* Allocate memory for the expanded device tree */
	mem = dt_alloc(size + 4, __alignof__(struct device_node));
	memset(mem, 0, size);

	*(__be32 *)(mem + size) = cpu_to_be32(0xdeadbeef);

	pr_debug("  unflattening %p...\n", mem);

	/* Second pass, do actual unflattening */
	unflatten_dt_nodes(blob, mem, dad, mynodes);
	if (be32_to_cpup(mem + size) != 0xdeadbeef)
		pr_warning("End of tree marker overwritten: %08x\n",
			   be32_to_cpup(mem + size));

	if (detached && mynodes) {
		of_node_set_flag(*mynodes, OF_DETACHED);
		pr_debug("unflattened tree is detached\n");
	}

	pr_debug(" <- unflatten_device_tree()\n");
	return mem;
}
void * locateDeviceTreeSignature(void *kernelBuffer, size_t kernelSize)
{
	for (char *ptr = (char *)kernelBuffer; ptr < (char *)kernelBuffer + kernelSize; ptr+=4)
	{
		if ((fdt_magic(ptr) == FDT_MAGIC) && (fdt_check_header(ptr) == 0))
			return ptr;
	}

	return NULL;
}
Example #6
0
File: fdt.c Project: SonicFrog/OS
/**
 * __unflatten_device_tree - create tree of device_nodes from flat blob
 *
 * unflattens a device-tree, creating the
 * tree of struct device_node. It also fills the "name" and "type"
 * pointers of the nodes so the normal device-tree walking functions
 * can be used.
 * @blob: The blob to expand
 * @mynodes: The device_node tree created by the call
 * @dt_alloc: An allocator that provides a virtual address to memory
 * for the resulting tree
 */
static void __unflatten_device_tree(void *blob,
			     struct device_node **mynodes,
			     void * (*dt_alloc)(u64 size, u64 align))
{
	unsigned long size;
	int start;
	void *mem;
	struct device_node **allnextp = mynodes;

	pr_debug(" -> unflatten_device_tree()\n");

	if (!blob) {
		pr_debug("No device tree pointer\n");
		return;
	}

	pr_debug("Unflattening device tree:\n");
	pr_debug("magic: %08x\n", fdt_magic(blob));
	pr_debug("size: %08x\n", fdt_totalsize(blob));
	pr_debug("version: %08x\n", fdt_version(blob));

	if (fdt_check_header(blob)) {
		pr_err("Invalid device tree blob header\n");
		return;
	}

	/* First pass, scan for size */
	start = 0;
	size = (unsigned long)unflatten_dt_node(blob, NULL, &start, NULL, NULL, 0);
	size = ALIGN(size, 4);

	pr_debug("  size is %lx, allocating...\n", size);

	/* Allocate memory for the expanded device tree */
	mem = dt_alloc(size + 4, __alignof__(struct device_node));
	memset(mem, 0, size);

	*(__be32 *)(mem + size) = cpu_to_be32(0xdeadbeef);

	pr_debug("  unflattening %p...\n", mem);

	/* Second pass, do actual unflattening */
	start = 0;
	unflatten_dt_node(blob, mem, &start, NULL, &allnextp, 0);
	if (be32_to_cpup(mem + size) != 0xdeadbeef)
		pr_warning("End of tree marker overwritten: %08x\n",
			   be32_to_cpup(mem + size));
	*allnextp = NULL;

	pr_debug(" <- unflatten_device_tree()\n");
}
Example #7
0
File: mm.c Project: mirage/xen
/* Map the FDT in the early boot page table */
void * __init early_fdt_map(paddr_t fdt_paddr)
{
    /* We are using 2MB superpage for mapping the FDT */
    paddr_t base_paddr = fdt_paddr & SECOND_MASK;
    paddr_t offset;
    void *fdt_virt;
    uint32_t size;

    /*
     * Check whether the physical FDT address is set and meets the minimum
     * alignment requirement. Since we are relying on MIN_FDT_ALIGN to be at
     * least 8 bytes so that we always access the magic and size fields
     * of the FDT header after mapping the first chunk, double check if
     * that is indeed the case.
     */
    BUILD_BUG_ON(MIN_FDT_ALIGN < 8);
    if ( !fdt_paddr || fdt_paddr % MIN_FDT_ALIGN )
        return NULL;

    /* The FDT is mapped using 2MB superpage */
    BUILD_BUG_ON(BOOT_FDT_VIRT_START % SZ_2M);

    create_mappings(boot_second, BOOT_FDT_VIRT_START, paddr_to_pfn(base_paddr),
                    SZ_2M >> PAGE_SHIFT, SZ_2M);

    offset = fdt_paddr % SECOND_SIZE;
    fdt_virt = (void *)BOOT_FDT_VIRT_START + offset;

    if ( fdt_magic(fdt_virt) != FDT_MAGIC )
        return NULL;

    size = fdt_totalsize(fdt_virt);
    if ( size > MAX_FDT_SIZE )
        return NULL;

    if ( (offset + size) > SZ_2M )
    {
        create_mappings(boot_second, BOOT_FDT_VIRT_START + SZ_2M,
                        paddr_to_pfn(base_paddr + SZ_2M),
                        SZ_2M >> PAGE_SHIFT, SZ_2M);
    }
Example #8
0
File: fdt.c Project: eesuda/u-boot
/*
 * Flattened Device Tree command, see the help for parameter definitions.
 */
static int do_fdt(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	if (argc < 2)
		return CMD_RET_USAGE;

	/*
	 * Set the address of the fdt
	 */
	if (strncmp(argv[1], "ad", 2) == 0) {
		unsigned long addr;
		int control = 0;
		struct fdt_header *blob;
		/*
		 * Set the address [and length] of the 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 %#08lx\n",
			       control ? (ulong)map_to_sysmem(blob) :
					getenv_hex("fdtaddr", 0));
			return 0;
		}

		addr = simple_strtoul(argv[0], NULL, 16);
		blob = map_sysmem(addr, 0);
		if (!fdt_valid(&blob))
			return 1;
		if (control)
			gd->fdt_blob = blob;
		else
			set_working_fdt_addr(addr);

		if (argc >= 2) {
			int  len;
			int  err;
			/*
			 * Optional new length
			 */
			len = simple_strtoul(argv[1], NULL, 16);
			if (len < fdt_totalsize(blob)) {
				printf ("New length %d < existing length %d, "
					"ignoring.\n",
					len, fdt_totalsize(blob));
			} else {
				/*
				 * Open in place with a new length.
				 */
				err = fdt_open_into(blob, blob, len);
				if (err != 0) {
					printf ("libfdt fdt_open_into(): %s\n",
						fdt_strerror(err));
				}
			}
		}

		return CMD_RET_SUCCESS;
	}

	if (!working_fdt) {
		puts(
			"No FDT memory address configured. Please configure\n"
			"the FDT address via \"fdt addr <address>\" command.\n"
			"Aborting!\n");
		return CMD_RET_FAILURE;
	}

	/*
	 * Move the working_fdt
	 */
	if (strncmp(argv[1], "mo", 2) == 0) {
		struct fdt_header *newaddr;
		int  len;
		int  err;

		if (argc < 4)
			return CMD_RET_USAGE;

		/*
		 * Set the address and length of the fdt.
		 */
		working_fdt = (struct fdt_header *)simple_strtoul(argv[2], NULL, 16);
		if (!fdt_valid(&working_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(working_fdt);
		} else {
			len = simple_strtoul(argv[4], NULL, 16);
			if (len < fdt_totalsize(working_fdt)) {
				printf ("New length 0x%X < existing length "
					"0x%X, aborting.\n",
					len, fdt_totalsize(working_fdt));
				return 1;
			}
		}

		/*
		 * Copy to the new location.
		 */
		err = fdt_open_into(working_fdt, newaddr, len);
		if (err != 0) {
			printf ("libfdt fdt_open_into(): %s\n",
				fdt_strerror(err));
			return 1;
		}
		working_fdt = newaddr;

	/*
	 * Make a new node
	 */
	} else if (strncmp(argv[1], "mk", 2) == 0) {
		char *pathp;		/* path */
		char *nodep;		/* new node to add */
		int  nodeoffset;	/* node offset from libfdt */
		int  err;

		/*
		 * Parameters: Node path, new node to be appended to the path.
		 */
		if (argc < 4)
			return CMD_RET_USAGE;

		pathp = argv[2];
		nodep = argv[3];

		nodeoffset = fdt_path_offset (working_fdt, pathp);
		if (nodeoffset < 0) {
			/*
			 * Not found or something else bad happened.
			 */
			printf ("libfdt fdt_path_offset() returned %s\n",
				fdt_strerror(nodeoffset));
			return 1;
		}
		err = fdt_add_subnode(working_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 working_fdt.
	 */
	} else if (argv[1][0] == 's') {
		char *pathp;		/* path */
		char *prop;		/* property */
		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, optional value.
		 */
		if (argc < 4)
			return CMD_RET_USAGE;

		pathp  = argv[2];
		prop   = argv[3];
		if (argc == 4) {
			len = 0;
		} else {
			ret = fdt_parse_prop(&argv[4], argc - 4, data, &len);
			if (ret != 0)
				return ret;
		}

		nodeoffset = fdt_path_offset (working_fdt, pathp);
		if (nodeoffset < 0) {
			/*
			 * Not found or something else bad happened.
			 */
			printf ("libfdt fdt_path_offset() returned %s\n",
				fdt_strerror(nodeoffset));
			return 1;
		}

		ret = fdt_setprop(working_fdt, nodeoffset, prop, data, len);
		if (ret < 0) {
			printf ("libfdt fdt_setprop(): %s\n", fdt_strerror(ret));
			return 1;
		}

	/********************************************************************
	 * Get the value of a property in the working_fdt.
	 ********************************************************************/
	} else if (argv[1][0] == 'g') {
		char *subcmd;		/* sub-command */
		char *pathp;		/* path */
		char *prop;		/* property */
		char *var;		/* variable to store result */
		int  nodeoffset;	/* node offset from libfdt */
		const void *nodep;	/* property node pointer */
		int  len = 0;		/* new length of the property */

		/*
		 * Parameters: Node path, property, optional value.
		 */
		if (argc < 5)
			return CMD_RET_USAGE;

		subcmd = argv[2];

		if (argc < 6 && subcmd[0] != 's')
			return CMD_RET_USAGE;

		var    = argv[3];
		pathp  = argv[4];
		prop   = argv[5];

		nodeoffset = fdt_path_offset(working_fdt, pathp);
		if (nodeoffset < 0) {
			/*
			 * Not found or something else bad happened.
			 */
			printf("libfdt fdt_path_offset() returned %s\n",
				fdt_strerror(nodeoffset));
			return 1;
		}

		if (subcmd[0] == 'n' || (subcmd[0] == 's' && argc == 5)) {
			int reqIndex = -1;
			int startDepth = fdt_node_depth(
				working_fdt, nodeoffset);
			int curDepth = startDepth;
			int curIndex = -1;
			int nextNodeOffset = fdt_next_node(
				working_fdt, nodeoffset, &curDepth);

			if (subcmd[0] == 'n')
				reqIndex = simple_strtoul(argv[5], NULL, 16);

			while (curDepth > startDepth) {
				if (curDepth == startDepth + 1)
					curIndex++;
				if (subcmd[0] == 'n' && curIndex == reqIndex) {
					const char *nodeName = fdt_get_name(
					    working_fdt, nextNodeOffset, NULL);

					setenv(var, (char *)nodeName);
					return 0;
				}
				nextNodeOffset = fdt_next_node(
					working_fdt, nextNodeOffset, &curDepth);
				if (nextNodeOffset < 0)
					break;
			}
			if (subcmd[0] == 's') {
				/* get the num nodes at this level */
				setenv_ulong(var, curIndex + 1);
			} else {
				/* node index not found */
				printf("libfdt node not found\n");
				return 1;
			}
		} else {
			nodep = fdt_getprop(
				working_fdt, nodeoffset, prop, &len);
			if (len == 0) {
				/* no property value */
				setenv(var, "");
				return 0;
			} else if (len > 0) {
				if (subcmd[0] == 'v') {
					int ret;

					ret = fdt_value_setenv(nodep, len, var);
					if (ret != 0)
						return ret;
				} else if (subcmd[0] == 'a') {
					/* Get address */
					char buf[11];

					sprintf(buf, "0x%p", nodep);
					setenv(var, buf);
				} else if (subcmd[0] == 's') {
					/* Get size */
					char buf[11];

					sprintf(buf, "0x%08X", len);
					setenv(var, buf);
				} else
					return CMD_RET_USAGE;
				return 0;
			} else {
				printf("libfdt fdt_getprop(): %s\n",
					fdt_strerror(len));
				return 1;
			}
		}

	/*
	 * Print (recursive) / List (single level)
	 */
	} else if ((argv[1][0] == 'p') || (argv[1][0] == 'l')) {
		int depth = MAX_LEVEL;	/* how deep to print */
		char *pathp;		/* path */
		char *prop;		/* property */
		int  ret;		/* return value */
		static char root[2] = "/";

		/*
		 * list is an alias for print, but limited to 1 level
		 */
		if (argv[1][0] == 'l') {
			depth = 1;
		}

		/*
		 * Get the starting path.  The root node is an oddball,
		 * the offset is zero and has no name.
		 */
		if (argc == 2)
			pathp = root;
		else
			pathp = argv[2];
		if (argc > 3)
			prop = argv[3];
		else
			prop = NULL;

		ret = fdt_print(pathp, prop, depth);
		if (ret != 0)
			return ret;

	/*
	 * Remove a property/node
	 */
	} else if (strncmp(argv[1], "rm", 2) == 0) {
		int  nodeoffset;	/* node offset from libfdt */
		int  err;

		/*
		 * Get the path.  The root node is an oddball, the offset
		 * is zero and has no name.
		 */
		nodeoffset = fdt_path_offset (working_fdt, argv[2]);
		if (nodeoffset < 0) {
			/*
			 * Not found or something else bad happened.
			 */
			printf ("libfdt fdt_path_offset() returned %s\n",
				fdt_strerror(nodeoffset));
			return 1;
		}
		/*
		 * Do the delete.  A fourth parameter means delete a property,
		 * otherwise delete the node.
		 */
		if (argc > 3) {
			err = fdt_delprop(working_fdt, nodeoffset, argv[3]);
			if (err < 0) {
				printf("libfdt fdt_delprop():  %s\n",
					fdt_strerror(err));
				return err;
			}
		} else {
			err = fdt_del_node(working_fdt, nodeoffset);
			if (err < 0) {
				printf("libfdt fdt_del_node():  %s\n",
					fdt_strerror(err));
				return err;
			}
		}

	/*
	 * Display header info
	 */
	} else if (argv[1][0] == 'h') {
		u32 version = fdt_version(working_fdt);
		printf("magic:\t\t\t0x%x\n", fdt_magic(working_fdt));
		printf("totalsize:\t\t0x%x (%d)\n", fdt_totalsize(working_fdt),
		       fdt_totalsize(working_fdt));
		printf("off_dt_struct:\t\t0x%x\n",
		       fdt_off_dt_struct(working_fdt));
		printf("off_dt_strings:\t\t0x%x\n",
		       fdt_off_dt_strings(working_fdt));
		printf("off_mem_rsvmap:\t\t0x%x\n",
		       fdt_off_mem_rsvmap(working_fdt));
		printf("version:\t\t%d\n", version);
		printf("last_comp_version:\t%d\n",
		       fdt_last_comp_version(working_fdt));
		if (version >= 2)
			printf("boot_cpuid_phys:\t0x%x\n",
				fdt_boot_cpuid_phys(working_fdt));
		if (version >= 3)
			printf("size_dt_strings:\t0x%x\n",
				fdt_size_dt_strings(working_fdt));
		if (version >= 17)
			printf("size_dt_struct:\t\t0x%x\n",
				fdt_size_dt_struct(working_fdt));
		printf("number mem_rsv:\t\t0x%x\n",
		       fdt_num_mem_rsv(working_fdt));
		printf("\n");

	/*
	 * Set boot cpu id
	 */
	} else if (strncmp(argv[1], "boo", 3) == 0) {
		unsigned long tmp = simple_strtoul(argv[2], NULL, 16);
		fdt_set_boot_cpuid_phys(working_fdt, tmp);

	/*
	 * memory command
	 */
	} else if (strncmp(argv[1], "me", 2) == 0) {
		uint64_t addr, size;
		int err;
		addr = simple_strtoull(argv[2], NULL, 16);
		size = simple_strtoull(argv[3], NULL, 16);
		err = fdt_fixup_memory(working_fdt, addr, size);
		if (err < 0)
			return err;

	/*
	 * mem reserve commands
	 */
	} else if (strncmp(argv[1], "rs", 2) == 0) {
		if (argv[2][0] == 'p') {
			uint64_t addr, size;
			int total = fdt_num_mem_rsv(working_fdt);
			int j, err;
			printf("index\t\t   start\t\t    size\n");
			printf("-------------------------------"
				"-----------------\n");
			for (j = 0; j < total; j++) {
				err = fdt_get_mem_rsv(working_fdt, j, &addr, &size);
				if (err < 0) {
					printf("libfdt fdt_get_mem_rsv():  %s\n",
							fdt_strerror(err));
					return err;
				}
				printf("    %x\t%08x%08x\t%08x%08x\n", j,
					(u32)(addr >> 32),
					(u32)(addr & 0xffffffff),
					(u32)(size >> 32),
					(u32)(size & 0xffffffff));
			}
		} else if (argv[2][0] == 'a') {
Example #9
0
/*
 * Flattened Device Tree command, see the help for parameter definitions.
 */
int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
{
	if (argc < 2) {
		printf ("Usage:\n%s\n", cmdtp->usage);
		return 1;
	}

	/********************************************************************
	 * Set the address of the fdt
	 ********************************************************************/
	if (argv[1][0] == 'a') {
		/*
		 * Set the address [and length] of the fdt.
		 */
		if (argc == 2) {
			if (!fdt_valid()) {
				return 1;
			}
			printf("The address of the fdt is %p\n", working_fdt);
			return 0;
		}

		working_fdt = (struct fdt_header *)simple_strtoul(argv[2], NULL, 16);

		if (!fdt_valid()) {
			return 1;
		}

		if (argc >= 4) {
			int  len;
			int  err;
			/*
			 * Optional new length
			 */
			len = simple_strtoul(argv[3], NULL, 16);
			if (len < fdt_totalsize(working_fdt)) {
				printf ("New length %d < existing length %d, "
					"ignoring.\n",
					len, fdt_totalsize(working_fdt));
			} else {
				/*
				 * Open in place with a new length.
				 */
				err = fdt_open_into(working_fdt, working_fdt, len);
				if (err != 0) {
					printf ("libfdt fdt_open_into(): %s\n",
						fdt_strerror(err));
				}
			}
		}

	/********************************************************************
	 * Move the working_fdt
	 ********************************************************************/
	} else if (strncmp(argv[1], "mo", 2) == 0) {
		struct fdt_header *newaddr;
		int  len;
		int  err;

		if (argc < 4) {
			printf ("Usage:\n%s\n", cmdtp->usage);
			return 1;
		}

		/*
		 * Set the address and length of the fdt.
		 */
		working_fdt = (struct fdt_header *)simple_strtoul(argv[2], NULL, 16);
		if (!fdt_valid()) {
			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(working_fdt);
		} else {
			len = simple_strtoul(argv[4], NULL, 16);
			if (len < fdt_totalsize(working_fdt)) {
				printf ("New length 0x%X < existing length "
					"0x%X, aborting.\n",
					len, fdt_totalsize(working_fdt));
				return 1;
			}
		}

		/*
		 * Copy to the new location.
		 */
		err = fdt_open_into(working_fdt, newaddr, len);
		if (err != 0) {
			printf ("libfdt fdt_open_into(): %s\n",
				fdt_strerror(err));
			return 1;
		}
		working_fdt = newaddr;

	/********************************************************************
	 * Make a new node
	 ********************************************************************/
	} else if (strncmp(argv[1], "mk", 2) == 0) {
		char *pathp;		/* path */
		char *nodep;		/* new node to add */
		int  nodeoffset;	/* node offset from libfdt */
		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_path_offset (working_fdt, pathp);
		if (nodeoffset < 0) {
			/*
			 * Not found or something else bad happened.
			 */
			printf ("libfdt fdt_path_offset() returned %s\n",
				fdt_strerror(nodeoffset));
			return 1;
		}
		err = fdt_add_subnode(working_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 working_fdt.
	 ********************************************************************/
	} else if (argv[1][0] == 's') {
		char *pathp;		/* path */
		char *prop;		/* property */
		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, optional value.
		 */
		if (argc < 4) {
			printf ("Usage:\n%s\n", cmdtp->usage);
			return 1;
		}

		pathp  = argv[2];
		prop   = argv[3];
		if (argc == 4) {
			len = 0;
		} else {
			ret = fdt_parse_prop(&argv[4], argc - 4, data, &len);
			if (ret != 0)
				return ret;
		}

		nodeoffset = fdt_path_offset (working_fdt, pathp);
		if (nodeoffset < 0) {
			/*
			 * Not found or something else bad happened.
			 */
			printf ("libfdt fdt_path_offset() returned %s\n",
				fdt_strerror(nodeoffset));
			return 1;
		}

		ret = fdt_setprop(working_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 ((argv[1][0] == 'p') || (argv[1][0] == 'l')) {
		int depth = MAX_LEVEL;	/* how deep to print */
		char *pathp;		/* path */
		char *prop;		/* property */
		int  ret;		/* return value */
		static char root[2] = "/";

		/*
		 * list is an alias for print, but limited to 1 level
		 */
		if (argv[1][0] == 'l') {
			depth = 1;
		}

		/*
		 * Get the starting path.  The root node is an oddball,
		 * the offset is zero and has no name.
		 */
		if (argc == 2)
			pathp = root;
		else
			pathp = argv[2];
		if (argc > 3)
			prop = argv[3];
		else
			prop = NULL;

		ret = fdt_print(pathp, prop, depth);
		if (ret != 0)
			return ret;

	/********************************************************************
	 * Remove a property/node
	 ********************************************************************/
	} else if (strncmp(argv[1], "rm", 2) == 0) {
		int  nodeoffset;	/* node offset from libfdt */
		int  err;

		/*
		 * Get the path.  The root node is an oddball, the offset
		 * is zero and has no name.
		 */
		nodeoffset = fdt_path_offset (working_fdt, argv[2]);
		if (nodeoffset < 0) {
			/*
			 * Not found or something else bad happened.
			 */
			printf ("libfdt fdt_path_offset() returned %s\n",
				fdt_strerror(nodeoffset));
			return 1;
		}
		/*
		 * Do the delete.  A fourth parameter means delete a property,
		 * otherwise delete the node.
		 */
		if (argc > 3) {
			err = fdt_delprop(working_fdt, nodeoffset, argv[3]);
			if (err < 0) {
				printf("libfdt fdt_delprop():  %s\n",
					fdt_strerror(err));
				return err;
			}
		} else {
			err = fdt_del_node(working_fdt, nodeoffset);
			if (err < 0) {
				printf("libfdt fdt_del_node():  %s\n",
					fdt_strerror(err));
				return err;
			}
		}

	/********************************************************************
	 * Display header info
	 ********************************************************************/
	} else if (argv[1][0] == 'h') {
		u32 version = fdt_version(working_fdt);
		printf("magic:\t\t\t0x%x\n", fdt_magic(working_fdt));
		printf("totalsize:\t\t0x%x (%d)\n", fdt_totalsize(working_fdt),
		       fdt_totalsize(working_fdt));
		printf("off_dt_struct:\t\t0x%x\n",
		       fdt_off_dt_struct(working_fdt));
		printf("off_dt_strings:\t\t0x%x\n",
		       fdt_off_dt_strings(working_fdt));
		printf("off_mem_rsvmap:\t\t0x%x\n",
		       fdt_off_mem_rsvmap(working_fdt));
		printf("version:\t\t%d\n", version);
		printf("last_comp_version:\t%d\n",
		       fdt_last_comp_version(working_fdt));
		if (version >= 2)
			printf("boot_cpuid_phys:\t0x%x\n",
				fdt_boot_cpuid_phys(working_fdt));
		if (version >= 3)
			printf("size_dt_strings:\t0x%x\n",
				fdt_size_dt_strings(working_fdt));
		if (version >= 17)
			printf("size_dt_struct:\t\t0x%x\n",
				fdt_size_dt_struct(working_fdt));
		printf("number mem_rsv:\t\t0x%x\n",
		       fdt_num_mem_rsv(working_fdt));
		printf("\n");

	/********************************************************************
	 * Set boot cpu id
	 ********************************************************************/
	} else if (strncmp(argv[1], "boo", 3) == 0) {
		unsigned long tmp = simple_strtoul(argv[2], NULL, 16);
		fdt_set_boot_cpuid_phys(working_fdt, tmp);

	/********************************************************************
	 * memory command
	 ********************************************************************/
	} else if (strncmp(argv[1], "me", 2) == 0) {
		uint64_t addr, size;
		int err;
#ifdef CFG_64BIT_STRTOUL
			addr = simple_strtoull(argv[2], NULL, 16);
			size = simple_strtoull(argv[3], NULL, 16);
#else
			addr = simple_strtoul(argv[2], NULL, 16);
			size = simple_strtoul(argv[3], NULL, 16);
#endif
		err = fdt_fixup_memory(working_fdt, addr, size);
		if (err < 0)
			return err;

	/********************************************************************
	 * mem reserve commands
	 ********************************************************************/
	} else if (strncmp(argv[1], "rs", 2) == 0) {
		if (argv[2][0] == 'p') {
			uint64_t addr, size;
			int total = fdt_num_mem_rsv(working_fdt);
			int j, err;
			printf("index\t\t   start\t\t    size\n");
			printf("-------------------------------"
				"-----------------\n");
			for (j = 0; j < total; j++) {
				err = fdt_get_mem_rsv(working_fdt, j, &addr, &size);
				if (err < 0) {
					printf("libfdt fdt_get_mem_rsv():  %s\n",
							fdt_strerror(err));
					return err;
				}
				printf("    %x\t%08x%08x\t%08x%08x\n", j,
					(u32)(addr >> 32),
					(u32)(addr & 0xffffffff),
					(u32)(size >> 32),
					(u32)(size & 0xffffffff));
			}
		} else if (argv[2][0] == 'a') {
Example #10
0
/**
 * display_fdt_by_regions() - Display regions of an FDT source
 *
 * This dumps an FDT as source, but only certain regions of it. This is the
 * final stage of the grep - we have a list of regions we want to display,
 * and this function displays them.
 *
 * @disp:	Display structure, holding info about our options
 * @blob:	FDT blob to display
 * @region:	List of regions to display
 * @count:	Number of regions
 */
static int display_fdt_by_regions(struct display_info *disp, const void *blob,
		struct fdt_region region[], int count)
{
	struct fdt_region *reg = region, *reg_end = region + count;
	uint32_t off_mem_rsvmap = fdt_off_mem_rsvmap(blob);
	int base = fdt_off_dt_struct(blob);
	int version = fdt_version(blob);
	int offset, nextoffset;
	int tag, depth, shift;
	FILE *f = disp->fout;
	uint64_t addr, size;
	int in_region;
	int file_ofs;
	int i;

	if (disp->show_dts_version)
		fprintf(f, "/dts-v1/;\n");

	if (disp->header) {
		fprintf(f, "// magic:\t\t0x%x\n", fdt_magic(blob));
		fprintf(f, "// totalsize:\t\t0x%x (%d)\n", fdt_totalsize(blob),
			fdt_totalsize(blob));
		fprintf(f, "// off_dt_struct:\t0x%x\n",
			fdt_off_dt_struct(blob));
		fprintf(f, "// off_dt_strings:\t0x%x\n",
			fdt_off_dt_strings(blob));
		fprintf(f, "// off_mem_rsvmap:\t0x%x\n", off_mem_rsvmap);
		fprintf(f, "// version:\t\t%d\n", version);
		fprintf(f, "// last_comp_version:\t%d\n",
			fdt_last_comp_version(blob));
		if (version >= 2) {
			fprintf(f, "// boot_cpuid_phys:\t0x%x\n",
				fdt_boot_cpuid_phys(blob));
		}
		if (version >= 3) {
			fprintf(f, "// size_dt_strings:\t0x%x\n",
				fdt_size_dt_strings(blob));
		}
		if (version >= 17) {
			fprintf(f, "// size_dt_struct:\t0x%x\n",
				fdt_size_dt_struct(blob));
		}
		fprintf(f, "\n");
	}

	if (disp->flags & FDT_REG_ADD_MEM_RSVMAP) {
		const struct fdt_reserve_entry *p_rsvmap;

		p_rsvmap = (const struct fdt_reserve_entry *)
				((const char *)blob + off_mem_rsvmap);
		for (i = 0; ; i++) {
			addr = fdt64_to_cpu(p_rsvmap[i].address);
			size = fdt64_to_cpu(p_rsvmap[i].size);
			if (addr == 0 && size == 0)
				break;

			fprintf(f, "/memreserve/ %llx %llx;\n",
				(unsigned long long)addr,
				(unsigned long long)size);
		}
	}

	depth = 0;
	nextoffset = 0;
	shift = 4;	/* 4 spaces per indent */
	do {
		const struct fdt_property *prop;
		const char *name;
		int show;
		int len;

		offset = nextoffset;

		/*
		 * Work out the file offset of this offset, and decide
		 * whether it is in the region list or not
		 */
		file_ofs = base + offset;
		if (reg < reg_end && file_ofs >= reg->offset + reg->size)
			reg++;
		in_region = reg < reg_end && file_ofs >= reg->offset &&
				file_ofs < reg->offset + reg->size;
		tag = fdt_next_tag(blob, offset, &nextoffset);

		if (tag == FDT_END)
			break;
		show = in_region || disp->all;
		if (show && disp->diff)
			fprintf(f, "%c", in_region ? '+' : '-');

		if (!show) {
			/* Do this here to avoid 'if (show)' in every 'case' */
			if (tag == FDT_BEGIN_NODE)
				depth++;
			else if (tag == FDT_END_NODE)
				depth--;
			continue;
		}
		if (tag != FDT_END) {
			if (disp->show_addr)
				fprintf(f, "%4x: ", file_ofs);
			if (disp->show_offset)
				fprintf(f, "%4x: ", file_ofs - base);
		}

		/* Green means included, red means excluded */
		if (disp->colour)
			print_ansi_colour(f, in_region ? COL_GREEN : COL_RED);

		switch (tag) {
		case FDT_PROP:
			prop = fdt_get_property_by_offset(blob, offset, NULL);
			name = fdt_string(blob, fdt32_to_cpu(prop->nameoff));
			fprintf(f, "%*s%s", depth * shift, "", name);
			utilfdt_print_data(prop->data,
					   fdt32_to_cpu(prop->len));
			fprintf(f, ";");
			break;

		case FDT_NOP:
			fprintf(f, "%*s// [NOP]", depth * shift, "");
			break;

		case FDT_BEGIN_NODE:
			name = fdt_get_name(blob, offset, &len);
			fprintf(f, "%*s%s {", depth++ * shift, "",
				*name ? name : "/");
			break;

		case FDT_END_NODE:
			fprintf(f, "%*s};", --depth * shift, "");
			break;
		}

		/* Reset colour back to normal before end of line */
		if (disp->colour)
			print_ansi_colour(f, COL_NONE);
		fprintf(f, "\n");
	} while (1);

	/* Print a list of strings if requested */
	if (disp->list_strings) {
		const char *str;
		int str_base = fdt_off_dt_strings(blob);

		for (offset = 0; offset < fdt_size_dt_strings(blob);
				offset += strlen(str) + 1) {
			str = fdt_string(blob, offset);
			int len = strlen(str) + 1;
			int show;

			/* Only print strings that are in the region */
			file_ofs = str_base + offset;
			in_region = reg < reg_end &&
					file_ofs >= reg->offset &&
					file_ofs + len < reg->offset +
						reg->size;
			show = in_region || disp->all;
			if (show && disp->diff)
				printf("%c", in_region ? '+' : '-');
			if (disp->show_addr)
				printf("%4x: ", file_ofs);
			if (disp->show_offset)
				printf("%4x: ", offset);
			printf("%s\n", str);
		}
	}

	return 0;
}
Example #11
0
File: fdt_sw.c Project: 274914765/C
static int check_header_sw(void *fdt)
{
    if (fdt_magic(fdt) != SW_MAGIC)
        return -FDT_ERR_BADMAGIC;
    return 0;
}