1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
82 	if (rtas == -1) {  in rtas_setup()
99 	 * that can fit into a 32-bit address space and accessed from real mode.  in rtas_setup()
102 	 * It must be 4KB-aligned and not cross a 256 MB boundary.  in rtas_setup()
105 	OF_getencprop(rtas, "rtas-size", &rtas_size, sizeof(rtas_size));  in rtas_setup()
117 	 * Instantiate RTAS. We always use the 32-bit version.  in rtas_setup()
120 	if (OF_hasprop(rtas, "linux,rtas-entry") &&  in rtas_setup()
121 	    OF_hasprop(rtas, "linux,rtas-base")) {  in rtas_setup()
122 		OF_getencprop(rtas, "linux,rtas-base", &rtas_ptr,  in rtas_setup()
125 		OF_getencprop(rtas, "linux,rtas-entry", &rtas_ptr,  in rtas_setup()
136 		result = OF_call_method("instantiate-rtas", rtasi, 1, 1,  in rtas_setup()
162 	rtas_bounce_offset += sizeof(register_t) -  in rtas_real_map()
189 	memcpy(buf, rtas_bounce_virt + (physaddr - rtas_bounce_phys), len);  in rtas_real_unmap()
199 /* Call an RTAS method by token */
201 rtas_call_method(cell_t token, int nargs, int nreturns, ...)  in rtas_call_method()  argument
207 		cell_t token;  in rtas_call_method()  member
215 		return (-1);  in rtas_call_method()
217 	args.token = htobe32(token);  in rtas_call_method()
232 	__asm __volatile ("sync; isync");  in rtas_call_method()
233 	oldfaultbuf = curthread->td_pcb->pcb_onfault;  in rtas_call_method()
234 	curthread->td_pcb->pcb_onfault = &env;  in rtas_call_method()
236 		__asm __volatile ("sync");  in rtas_call_method()
238 		__asm __volatile ("sync; isync");  in rtas_call_method()
242 	curthread->td_pcb->pcb_onfault = oldfaultbuf;  in rtas_call_method()
243 	__asm __volatile ("sync");  in rtas_call_method()
256 /* Look up an RTAS token */
260 	cell_t token;  in rtas_token_lookup()  local
263 		return (-1);  in rtas_token_lookup()
265 	if (OF_getencprop(rtas, method, &token, sizeof(token)) == -1)  in rtas_token_lookup()
266 		return (-1);  in rtas_token_lookup()
268 	return (token);  in rtas_token_lookup()