powerpc/boot/oflib.c

1 // SPDX-License-Identifier: GPL-2.0-or-later
17 /* The following structure is used to communicate with open firmware.
89 			rets[i-1] = be32_to_cpu(args.args[nargs+i]);  in of_call_prom_ret()
109 static int need_map = -1;
119 	if (oprom == (phandle) -1)  in check_of_version()
123 	version[sizeof(version)-1] = 0;  in check_of_version()
125 	if (!string_match(version, "Open Firmware, 1.")  in check_of_version()
129 	if (chosen == (phandle) -1) {  in check_of_version()
131 		if (chosen == (phandle) -1) {  in check_of_version()
140 	memory = of_call_prom("open", 1, 1, "/memory");  in check_of_version()
142 		memory = of_call_prom("open", 1, 1, "/memory@0");  in check_of_version()
163 	ret = of_call_prom_ret("call-method", 5, 2, &result, "claim", memory,  in of_claim()
165 	if (ret != 0 || result == -1)  in of_claim()
166 		return  -1;  in of_claim()
167 	ret = of_call_prom_ret("call-method", 5, 2, &result, "claim", chosen_mmu,  in of_claim()
170 	ret = of_call_prom("call-method", 6, 1, "map", chosen_mmu,  in of_claim()
181 	/* With some older POWER4 firmware we need to claim the area the kernel  in of_vmlinux_alloc()
185 	addr = (unsigned long) of_claim(start, end - start, 0);  in of_vmlinux_alloc()
187 	       start, end, end - start, addr);  in of_vmlinux_alloc()