1 // SPDX-License-Identifier: GPL-2.0+
6  * Copyright 2010-2011 Freescale Semiconductor, Inc.
21  * fdt_getprop_u32_default_node - Return a node's property or a default
23  * @fdt: ptr to device tree
52  * fdt_getprop_u32_default - Find a node and return it's property or a default
54  * @fdt: ptr to device tree
77  * @fdt: ptr to device tree
101  * fdt_find_or_add_subnode() - find or possibly add a subnode of a given node
103  * @fdt: pointer to the device tree blob
116 	if (offset == -FDT_ERR_NOTFOUND)  in fdt_find_or_add_subnode()
129 	return fdt_setprop(fdt, chosenoff, "linux,stdout-path",  in fdt_fixup_stdout()
142 	sprintf(sername, "serial%d", CONFIG_CONS_INDEX - 1);  in fdt_fixup_stdout()
159 	err = fdt_setprop(fdt, chosenoff, "linux,stdout-path", tmp, len);  in fdt_fixup_stdout()
161 		printf("WARNING: could not set linux,stdout-path %s.\n",  in fdt_fixup_stdout()
201 		err = fdt_setprop(fdt, 0, "serial-number", serial,  in fdt_root()
205 			printf("WARNING: could not set serial-number %s.\n",  in fdt_root()
244 	err = fdt_add_mem_rsv(fdt, initrd_start, initrd_end - initrd_start);  in fdt_initrd()
252 	err = fdt_setprop_uxx(fdt, nodeoffset, "linux,initrd-start",  in fdt_initrd()
256 		printf("WARNING: could not set linux,initrd-start %s.\n",  in fdt_initrd()
261 	err = fdt_setprop_uxx(fdt, nodeoffset, "linux,initrd-end",  in fdt_initrd()
265 		printf("WARNING: could not set linux,initrd-end %s.\n",  in fdt_initrd()
341 	off = fdt_node_offset_by_prop_value(fdt, -1, pname, pval, plen);  in do_fixup_by_prop()
342 	while (off != -FDT_ERR_NOTFOUND) {  in do_fixup_by_prop()
360 	int off = -1;  in do_fixup_by_compat()
368 	off = fdt_node_offset_by_compatible(fdt, -1, compat);  in do_fixup_by_compat()
369 	while (off != -FDT_ERR_NOTFOUND) {  in do_fixup_by_compat()
385  * fdt_pack_reg - pack address and size array into the "reg"-suitable stream
409 	return p - (char *)buf;  in fdt_pack_reg()
421 	u8 tmp[MEMORY_BANKS_MAX * 16]; /* Up to 64-bit address + 64-bit size */  in fdt_fixup_memory_banks()
427 		return -1;  in fdt_fixup_memory_banks()
525 			if (i != -1) {  in fdt_fixup_ethernet()
537 			if (fdt_prop && !strcmp(fdt_prop->data, "disabled"))  in fdt_fixup_ethernet()
552 			do_fixup_by_path(fdt, path, "mac-address",  in fdt_fixup_ethernet()
554 			do_fixup_by_path(fdt, path, "local-mac-address",  in fdt_fixup_ethernet()
572 	/* find or create "/fit-images" node */  in fdt_record_loadable()
573 	node = fdt_find_or_add_subnode(blob, 0, "fit-images");  in fdt_record_loadable()
577 	/* find or create "/fit-images/<name>" node */  in fdt_record_loadable()
587 	fdt_setprop_u32(blob, node, "load-addr", load_addr);  in fdt_record_loadable()
588 	if (entry_point != -1)  in fdt_record_loadable()
589 		fdt_setprop_u32(blob, node, "entry-point", entry_point);  in fdt_record_loadable()
623 	 * ((initrd-start + initrd-end) * 2 (name & value))  in fdt_shrink_to_minimum()
631 	actualsize = actualsize - ((uintptr_t)blob & 0xfff);  in fdt_shrink_to_minimum()
656 	/* sized based on pci addr cells, size-cells, & address-cells */  in fdt_pci_dma_ranges()
659 	addrcell = fdt_getprop_u32_default(blob, "/", "#address-cells", 1);  in fdt_pci_dma_ranges()
660 	sizecell = fdt_getprop_u32_default(blob, "/", "#size-cells", 1);  in fdt_pci_dma_ranges()
663 	for (r = 0; r < hose->region_count; r++) {  in fdt_pci_dma_ranges()
667 		if (!(hose->regions[r].flags & PCI_REGION_SYS_MEMORY))  in fdt_pci_dma_ranges()
670 		bus_start = (u64)hose->regions[r].bus_start;  in fdt_pci_dma_ranges()
671 		phys_start = (u64)hose->regions[r].phys_start;  in fdt_pci_dma_ranges()
672 		size = (u64)hose->regions[r].size;  in fdt_pci_dma_ranges()
679 		if (hose->regions[r].flags & PCI_REGION_PREFETCH)  in fdt_pci_dma_ranges()
705 	len = dma_range - &dma_ranges[0];  in fdt_pci_dma_ranges()
707 		fdt_setprop(blob, phb_off, "dma-ranges", &dma_ranges[0], len*4);  in fdt_pci_dma_ranges()
808 	list_for_each_prev(pentry, &dev->parts) {  in fdt_node_set_part_info()
813 		debug("%2d: %-20s0x%08llx\t0x%08llx\t%d\n",  in fdt_node_set_part_info()
814 			part_num, part->name, part->size,  in fdt_node_set_part_info()
815 			part->offset, part->mask_flags);  in fdt_node_set_part_info()
817 		sprintf(buf, "partition@%llx", part->offset);  in fdt_node_set_part_info()
820 		if (ret == -FDT_ERR_NOSPACE) {  in fdt_node_set_part_info()
834 		if (part->mask_flags & 1) {  in fdt_node_set_part_info()
837 			if (ret == -FDT_ERR_NOSPACE) {  in fdt_node_set_part_info()
847 		cell.r0 = cpu_to_fdt32(part->offset);  in fdt_node_set_part_info()
848 		cell.r1 = cpu_to_fdt32(part->size);  in fdt_node_set_part_info()
851 		if (ret == -FDT_ERR_NOSPACE) {  in fdt_node_set_part_info()
861 		ret = fdt_setprop_string(blob, newoff, "label", part->name);  in fdt_node_set_part_info()
862 		if (ret == -FDT_ERR_NOSPACE) {  in fdt_node_set_part_info()
890  *		{ "fsl,mpc5121-nfc",    MTD_DEV_TYPE_NAND, },
891  *		{ "cfi-flash",          MTD_DEV_TYPE_NOR,  },
908 		noff = fdt_node_offset_by_compatible(blob, -1,  in fdt_fixup_mtdparts()
910 		while (noff != -FDT_ERR_NOTFOUND) {  in fdt_fixup_mtdparts()
952 	while(na--)  in of_dump_addr()
961  * struct of_bus - Callbacks for bus specific translators
965  * @match:	Return non-zero if the node whose parent is at
984  *		zero on success, non-zero on error.
1011 		prop = fdt_getprop(blob, parentoffset, "#size-cells", NULL);  in fdt_support_default_count_cells()
1032 	return da - cp;  in of_bus_default_map()
1041 		addr[na - 2] = cpu_to_fdt32(a >> 32);  in of_bus_default_translate()
1042 	addr[na - 1] = cpu_to_fdt32(a & 0xffffffffu);  in of_bus_default_translate()
1079 	cp = fdt_read_number(range + 1, na - 1);  in of_bus_isa_map()
1081 	da = fdt_read_number(addr + 1, na - 1);  in of_bus_isa_map()
1087 	return da - cp;  in of_bus_isa_map()
1092 	return of_bus_default_translate(addr + 1, offset, na - 1);  in of_bus_isa_translate()
1128 		if (!bus->match || bus->match(blob, parentoffset))  in of_match_bus()
1152 	 * crossing a non-translatable boundary, and thus the addresses  in of_translate_one()
1155 	 * what Apple understood, and they do have things like /uni-n or  in of_translate_one()
1161 	 * the first place. --BenH.  in of_translate_one()
1176 	for (; rlen >= rone; rlen -= rone, ranges += rone) {  in of_translate_one()
1177 		offset = bus->map(addr, ranges, na, ns, pna);  in of_translate_one()
1192 	return pbus->translate(addr, offset, pna);  in of_translate_one()
1196  * Translate an address from the device-tree into a CPU physical address,
1197  * this walks up the tree and applies the various bus mappings on the
1200  * Note: We consider that crossing any level with #size-cells == 0 to mean
1224 	bus->count_cells(blob, parent, &na, &ns);  in __of_translate_address()
1233 	    bus->name, na, ns, fdt_get_name(blob, parent, NULL));  in __of_translate_address()
1251 		pbus->count_cells(blob, parent, &pna, &pns);  in __of_translate_address()
1259 		    pbus->name, pna, pns, fdt_get_name(blob, parent, NULL));  in __of_translate_address()
1288  * @blob: ptr to device tree
1296 	int len, off = fdt_node_offset_by_compatible(blob, -1, compat);  in fdt_node_offset_by_compat_reg()
1297 	while (off != -FDT_ERR_NOTFOUND) {  in fdt_node_offset_by_compat_reg()
1306 	return -FDT_ERR_NOTFOUND;  in fdt_node_offset_by_compat_reg()
1312  * @blob: ptr to device tree
1319 	for (offset = fdt_next_node(blob, -1, NULL); offset >= 0;  in fdt_alloc_phandle()
1330  * @fdt: ptr to device tree
1350 		return -FDT_ERR_BADPHANDLE;  in fdt_set_phandle()
1370  * @fdt: ptr to device tree
1397  * @fdt: ptr to device tree
1423 		sprintf(buf, "fail-%d", error_code);  in fdt_set_node_status()
1428 		ret = -1;  in fdt_set_node_status()
1438  * @fdt: ptr to device tree
1458 	noff = fdt_node_offset_by_compatible(blob, -1, compat);  in fdt_add_edid()
1459 	if (noff != -FDT_ERR_NOTFOUND) {  in fdt_add_edid()
1463 		if (ret == -FDT_ERR_NOSPACE) {  in fdt_add_edid()
1482  * Verify the physical address of device tree node for a given alias
1484  * This function locates the device tree node of a given alias, and then
1505 		printf("Warning: device tree alias '%s' points to invalid "  in fdt_verify_alias_address()
1512 		printf("Warning: device tree node '%s' has no address.\n",  in fdt_verify_alias_address()
1519 		printf("Warning: U-Boot configured device %s at address %llu,\n"  in fdt_verify_alias_address()
1520 		       "but the device tree has it address %llx.\n",  in fdt_verify_alias_address()
1551 		return -FDT_ERR_NOSPACE;  in fdt_read_prop()
1561 		return -FDT_ERR_NOSPACE;  in fdt_read_prop()
1568  * fdt_read_range - Read a node's n'th range property
1570  * @fdt: ptr to device tree
1574  * @addr: pointer to storage for the CPU view translated physical start
1598 	pacells = fdt_getprop_u32_default_node(fdt, pnode, 0, "#address-cells", 1);  in fdt_read_range()
1599 	acells = fdt_getprop_u32_default_node(fdt, node, 0, "#address-cells", 1);  in fdt_read_range()
1600 	scells = fdt_getprop_u32_default_node(fdt, node, 0, "#size-cells", 1);  in fdt_read_range()
1605 		return -FDT_ERR_NOTFOUND;  in fdt_read_range()
1636  * fdt_setup_simplefb_node - Fill and enable a simplefb node
1638  * @fdt: ptr to device tree
1698  * Update native-mode in display-timings from display environment variable.
1706 		return -FDT_ERR_NOTFOUND;  in fdt_fixup_display()
1710 		toff = fdt_subnode_offset(blob, toff, "display-timings");  in fdt_fixup_display()
1721 			return fdt_setprop_u32(blob, toff, "native-mode", h);  in fdt_fixup_display()
1728  * fdt_overlay_apply_verbose - Apply an overlay with verbose error reporting
1730  * @fdt: ptr to device tree
1731  * @fdto: ptr to device tree overlay
1750 			printf("make sure you've compiled with -@\n");  in fdt_overlay_apply_verbose()