2 * Flattened Image Tree loader.
4 * Copyright (c) 2016 Imagination Technologies
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
20 #include "qemu/osdep.h"
21 #include "qapi/error.h"
22 #include "qemu/units.h"
23 #include "exec/memory.h"
24 #include "hw/loader.h"
25 #include "hw/loader-fit.h"
26 #include "qemu/cutils.h"
27 #include "qemu/error-report.h"
28 #include "sysemu/device_tree.h"
33 #define FIT_LOADER_MAX_PATH (128)
35 static const void *fit_load_image_alloc(const void *itb, const char *name,
36 int *poff, size_t *psz, Error **errp)
41 char path[FIT_LOADER_MAX_PATH];
45 snprintf(path, sizeof(path), "/images/%s", name);
47 off = fdt_path_offset(itb, path);
49 error_setg(errp, "can't find node %s", path);
56 data = fdt_getprop(itb, off, "data", &sz);
58 error_setg(errp, "can't get %s/data", path);
62 comp = fdt_getprop(itb, off, "compression", NULL);
63 if (!comp || !strcmp(comp, "none")) {
67 uncomp_data = g_malloc(sz);
68 memmove(uncomp_data, data, sz);
72 if (!strcmp(comp, "gzip")) {
73 uncomp_len = UBOOT_MAX_GUNZIP_BYTES;
74 uncomp_data = g_malloc(uncomp_len);
76 uncomp_len = gunzip(uncomp_data, uncomp_len, (void *) data, sz);
78 error_setg(errp, "unable to decompress %s image", name);
83 data = g_realloc(uncomp_data, uncomp_len);
90 error_setg(errp, "unknown compression '%s'", comp);
94 static int fit_image_addr(const void *itb, int img, const char *name,
95 hwaddr *addr, Error **errp)
100 prop = fdt_getprop(itb, img, name, &len);
102 error_setg(errp, "can't find %s address", name);
108 *addr = fdt32_to_cpu(*(fdt32_t *)prop);
111 *addr = fdt64_to_cpu(*(fdt64_t *)prop);
114 error_setg(errp, "invalid %s address length %d", name, len);
119 static int fit_load_kernel(const struct fit_loader *ldr, const void *itb,
120 int cfg, void *opaque, hwaddr *pend,
125 const void *load_data;
126 hwaddr load_addr, entry_addr;
131 name = fdt_getprop(itb, cfg, "kernel", NULL);
133 error_setg(errp, "no kernel specified by FIT configuration");
137 load_data = data = fit_load_image_alloc(itb, name, &img_off, &sz, errp);
139 error_prepend(errp, "unable to load kernel image from FIT: ");
143 err = fit_image_addr(itb, img_off, "load", &load_addr, errp);
145 error_prepend(errp, "unable to read kernel load address from FIT: ");
150 err = fit_image_addr(itb, img_off, "entry", &entry_addr, errp);
152 error_prepend(errp, "unable to read kernel entry address from FIT: ");
157 if (ldr->kernel_filter) {
158 load_data = ldr->kernel_filter(opaque, data, &load_addr, &entry_addr);
162 *pend = load_addr + sz;
165 load_addr = ldr->addr_to_phys(opaque, load_addr);
166 rom_add_blob_fixed(name, load_data, sz, load_addr);
170 g_free((void *) data);
171 if (data != load_data) {
172 g_free((void *) load_data);
177 static int fit_load_fdt(const struct fit_loader *ldr, const void *itb,
178 int cfg, void *opaque, const void *match_data,
179 hwaddr kernel_end, Error **errp)
184 const void *load_data;
190 name = fdt_getprop(itb, cfg, "fdt", NULL);
195 load_data = data = fit_load_image_alloc(itb, name, &img_off, &sz, errp);
197 error_prepend(errp, "unable to load FDT image from FIT: ");
201 ret = fit_image_addr(itb, img_off, "load", &load_addr, &err);
202 if (ret == -ENOENT) {
203 load_addr = ROUND_UP(kernel_end, 64 * KiB) + (10 * MiB);
206 error_propagate_prepend(errp, err,
207 "unable to read FDT load address from FIT: ");
211 if (ldr->fdt_filter) {
212 load_data = ldr->fdt_filter(opaque, data, match_data, &load_addr);
215 load_addr = ldr->addr_to_phys(opaque, load_addr);
216 sz = fdt_totalsize(load_data);
217 rom_add_blob_fixed(name, load_data, sz, load_addr);
221 g_free((void *) data);
222 if (data != load_data) {
223 g_free((void *) load_data);
228 static bool fit_cfg_compatible(const void *itb, int cfg, const char *compat)
231 const char *fdt_name;
234 fdt_name = fdt_getprop(itb, cfg, "fdt", NULL);
239 fdt = fit_load_image_alloc(itb, fdt_name, NULL, NULL, NULL);
244 if (fdt_check_header(fdt)) {
249 if (fdt_node_check_compatible(fdt, 0, compat)) {
256 g_free((void *) fdt);
260 int load_fit(const struct fit_loader *ldr, const char *filename, void *opaque)
263 const struct fit_loader_match *match;
264 const void *itb, *match_data = NULL;
265 const char *def_cfg_name;
266 char path[FIT_LOADER_MAX_PATH];
267 int itb_size, configs, cfg_off, off;
271 itb = load_device_tree(filename, &itb_size);
276 configs = fdt_path_offset(itb, "/configurations");
278 error_report("can't find node /configurations");
283 cfg_off = -FDT_ERR_NOTFOUND;
286 for (match = ldr->matches; match->compatible; match++) {
287 off = fdt_first_subnode(itb, configs);
289 if (fit_cfg_compatible(itb, off, match->compatible)) {
291 match_data = match->data;
295 off = fdt_next_subnode(itb, off);
305 def_cfg_name = fdt_getprop(itb, configs, "default", NULL);
307 snprintf(path, sizeof(path), "/configurations/%s", def_cfg_name);
308 cfg_off = fdt_path_offset(itb, path);
313 error_report("can't find configuration");
318 ret = fit_load_kernel(ldr, itb, cfg_off, opaque, &kernel_end, &err);
320 error_report_err(err);
324 ret = fit_load_fdt(ldr, itb, cfg_off, opaque, match_data, kernel_end,
327 error_report_err(err);
333 g_free((void *) itb);