1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
56  * ROM region is 16 MB at the top of 4GB ("low") memory.
61  * It is allocated in page-multiple blocks on a first-come first-serve basis,
64 static char *romptr;	/* Pointer to userspace-mapped bootrom region. */
87     int size, uint64_t *val, void *arg1 __unused, long arg2 __unused)  in bootrom_var_mem_handler()  argument
91 	offset = addr - var.gpa;  in bootrom_var_mem_handler()
98 			memcpy(var.mmap + offset, val, size);  in bootrom_var_mem_handler()
102 			var.cmd = *(uint8_t *)val;  in bootrom_var_mem_handler()
108 			memset(val, 0, size);  in bootrom_var_mem_handler()
112 			memcpy(val, var.mmap + offset, size);  in bootrom_var_mem_handler()
128 	gpa_base = highmem - BOOTROM_SIZE;  in init_bootrom()
130 	gpa_alloctop = highmem - 1;  in init_bootrom()
154 		warnx("ROM size %zu is invalid", len);  in bootrom_alloc()
158 		warnx("ROM size %zu is not a multiple of the page size",  in bootrom_alloc()
164 		gpa = (gpa_alloctop - len) + 1;  in bootrom_alloc()
166 			warnx("No room for %zu ROM in bootrom region", len);  in bootrom_alloc()
171 		if (gpa > (gpa_alloctop - len) + 1) {  in bootrom_alloc()
172 			warnx("No room for %zu ROM in bootrom region", len);  in bootrom_alloc()
177 	segoff = gpa - gpa_base;  in bootrom_alloc()
185 		gpa_alloctop = gpa - 1;  in bootrom_alloc()
205 	rv = -1;  in bootrom_loadrom()
206 	varfd = -1;  in bootrom_loadrom()
221 		return (-1);  in bootrom_loadrom()
296 		var.gpa = (gpa_alloctop - var_size) + 1;  in bootrom_loadrom()
297 		gpa_alloctop = var.gpa - 1;  in bootrom_loadrom()