1 // SPDX-License-Identifier: GPL-2.0+
3  * FDT Address translation based on u-boot fdt_support.c which in turn was
9  * Copyright 2010-2011 Freescale Semiconductor, Inc.
22 #define OF_CHECK_COUNTS(na, ns)	((na) > 0 && (na) <= OF_MAX_ADDR_CELLS && \  argument
23 			(ns) > 0)
30 	while(na--)  in of_dump_addr()
43 				int na, int ns, int pna);
54 		prop = fdt_getprop(blob, parentoffset, "#address-cells", NULL);  in fdt_bus_default_count_cells()
62 		prop = fdt_getprop(blob, parentoffset, "#size-cells", NULL);  in fdt_bus_default_count_cells()
71 				      int na, int ns, int pna)  in fdt_bus_default_map()  argument
76 	s  = of_read_number(range + na + pna, ns);  in fdt_bus_default_map()
84 	return da - cp;  in fdt_bus_default_map()
93 		addr[na - 2] = cpu_to_fdt32(a >> 32);  in fdt_bus_default_translate()
94 	addr[na - 1] = cpu_to_fdt32(a & 0xffffffffu);  in fdt_bus_default_translate()
112 				    int na, int ns, int pna, const char *rprop)  in fdt_translate_one()  argument
133 	rone = na + pna + ns;  in fdt_translate_one()
134 	for (; rlen >= rone; rlen -= rone, ranges += rone) {  in fdt_translate_one()
135 		offset = bus->map(addr, ranges, na, ns, pna);  in fdt_translate_one()
150 	return pbus->translate(addr, offset, pna);  in fdt_translate_one()
154  * Translate an address from the device-tree into a CPU physical address,
158  * Note: We consider that crossing any level with #size-cells == 0 to mean
160  * that can be mapped to a cpu physical address). This is not really specified
169 	int na, ns, pna, pns;  in fdt_translate_address()  local
189 	bus->count_cells(blob, parent, &na, &ns);  in fdt_translate_address()
190 	if (!OF_CHECK_COUNTS(na, ns)) {  in fdt_translate_address()
197 	pr_debug("bus (na=%d, ns=%d) on %s\n",  in fdt_translate_address()
198 		 na, ns, fdt_get_name(blob, parent, NULL));  in fdt_translate_address()
216 		pbus->count_cells(blob, parent, &pna, &pns);  in fdt_translate_address()
223 		pr_debug("parent bus (na=%d, ns=%d) on %s\n",  in fdt_translate_address()
228 					addr, na, ns, pna, "ranges"))  in fdt_translate_address()
233 		ns = pns;  in fdt_translate_address()
243  * of_flat_dt_translate_address - translate DT addr into CPU phys addr