2 * skl-sst-utils.c - SKL sst utils functions
4 * Copyright (C) 2016 Intel Corp
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as version 2, as
8 * published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
16 #include <linux/device.h>
17 #include <linux/slab.h>
18 #include <linux/uuid.h>
19 #include "skl-sst-dsp.h"
20 #include "../common/sst-dsp.h"
21 #include "../common/sst-dsp-priv.h"
22 #include "skl-sst-ipc.h"
25 #define UUID_STR_SIZE 37
26 #define DEFAULT_HASH_SHA256_LEN 32
28 /* FW Extended Manifest Header id = $AE1 */
29 #define SKL_EXT_MANIFEST_HEADER_MAGIC 0x31454124
31 struct skl_dfw_module_mod {
33 struct skl_dfw_module skl_dfw_mod;
57 union seg_flags flags;
70 struct adsp_module_entry {
74 struct module_type type;
75 u8 hash1[DEFAULT_HASH_SHA256_LEN];
80 u16 instance_max_count;
81 u16 instance_bss_size;
82 struct segment_desc segments[3];
89 u32 preload_page_count;
107 struct list_head list;
110 struct skl_ext_manifest_hdr {
118 int snd_skl_get_module_info(struct skl_sst *ctx, u8 *uuid,
119 struct skl_dfw_module *dfw_config)
121 struct uuid_module *module;
124 uuid_mod = (uuid_le *)uuid;
126 list_for_each_entry(module, &ctx->uuid_list, list) {
127 if (uuid_le_cmp(*uuid_mod, module->uuid) == 0) {
128 dfw_config->module_id = module->id;
129 dfw_config->is_loadable = module->is_loadable;
137 EXPORT_SYMBOL_GPL(snd_skl_get_module_info);
140 * Parse the firmware binary to get the UUID, module id
143 int snd_skl_parse_uuids(struct sst_dsp *ctx, unsigned int offset)
145 struct adsp_fw_hdr *adsp_hdr;
146 struct adsp_module_entry *mod_entry;
150 struct skl_sst *skl = ctx->thread_context;
151 struct uuid_module *module;
152 struct firmware stripped_fw;
153 unsigned int safe_file;
155 /* Get the FW pointer to derive ADSP header */
156 stripped_fw.data = ctx->fw->data;
157 stripped_fw.size = ctx->fw->size;
159 skl_dsp_strip_extended_manifest(&stripped_fw);
161 buf = stripped_fw.data;
163 /* check if we have enough space in file to move to header */
164 safe_file = sizeof(*adsp_hdr) + offset;
165 if (stripped_fw.size <= safe_file) {
166 dev_err(ctx->dev, "Small fw file size, No space for hdr\n");
170 adsp_hdr = (struct adsp_fw_hdr *)(buf + offset);
172 /* check 1st module entry is in file */
173 safe_file += adsp_hdr->len + sizeof(*mod_entry);
174 if (stripped_fw.size <= safe_file) {
175 dev_err(ctx->dev, "Small fw file size, No module entry\n");
179 mod_entry = (struct adsp_module_entry *)
180 (buf + offset + adsp_hdr->len);
182 num_entry = adsp_hdr->num_modules;
184 /* check all entries are in file */
185 safe_file += num_entry * sizeof(*mod_entry);
186 if (stripped_fw.size <= safe_file) {
187 dev_err(ctx->dev, "Small fw file size, No modules\n");
193 * Read the UUID(GUID) from FW Manifest.
195 * The 16 byte UUID format is: XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXX
196 * Populate the UUID table to store module_id and loadable flags
200 for (i = 0; i < num_entry; i++, mod_entry++) {
201 module = kzalloc(sizeof(*module), GFP_KERNEL);
205 uuid_bin = (uuid_le *)mod_entry->uuid.id;
206 memcpy(&module->uuid, uuid_bin, sizeof(module->uuid));
209 module->is_loadable = mod_entry->type.load_type;
211 list_add_tail(&module->list, &skl->uuid_list);
214 "Adding uuid :%pUL mod id: %d Loadable: %d\n",
215 &module->uuid, module->id, module->is_loadable);
221 void skl_freeup_uuid_list(struct skl_sst *ctx)
223 struct uuid_module *uuid, *_uuid;
225 list_for_each_entry_safe(uuid, _uuid, &ctx->uuid_list, list) {
226 list_del(&uuid->list);
232 * some firmware binary contains some extended manifest. This needs
233 * to be stripped in that case before we load and use that image.
235 * Get the module id for the module by checking
236 * the table for the UUID for the module
238 int skl_dsp_strip_extended_manifest(struct firmware *fw)
240 struct skl_ext_manifest_hdr *hdr;
242 /* check if fw file is greater than header we are looking */
243 if (fw->size < sizeof(hdr)) {
244 pr_err("%s: Firmware file small, no hdr\n", __func__);
248 hdr = (struct skl_ext_manifest_hdr *)fw->data;
250 if (hdr->id == SKL_EXT_MANIFEST_HEADER_MAGIC) {
251 fw->size -= hdr->len;
252 fw->data += hdr->len;