sound/soc/intel/skylake/skl-sst-utils.c - arm/linux - Git at Google

 /*
  *  skl-sst-utils.c - SKL sst utils functions
  *
  *  Copyright (C) 2016 Intel Corp
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as version 2, as
  * published by the Free Software Foundation.
  *
  * This program is distributed in the hope that it will be useful, but
  * WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * General Public License for more details.
  */

 #include <linux/device.h>
 #include <linux/slab.h>
 #include <linux/uuid.h>
 #include "skl-sst-dsp.h"
 #include "../common/sst-dsp.h"
 #include "../common/sst-dsp-priv.h"
 #include "skl-sst-ipc.h"


 #define UUID_STR_SIZE 37
 #define DEFAULT_HASH_SHA256_LEN 32

 /* FW Extended Manifest Header id = $AE1 */
 #define SKL_EXT_MANIFEST_HEADER_MAGIC   0x31454124

 struct UUID {
 	u8 id[16];
 };

 union seg_flags {
 	u32 ul;
 	struct {
 		u32 contents : 1;
 		u32 alloc    : 1;
 		u32 load     : 1;
 		u32 read_only : 1;
 		u32 code     : 1;
 		u32 data     : 1;
 		u32 _rsvd0   : 2;
 		u32 type     : 4;
 		u32 _rsvd1   : 4;
 		u32 length   : 16;
 	} r;
 } __packed;

 struct segment_desc {
 	union seg_flags flags;
 	u32 v_base_addr;
 	u32 file_offset;
 };

 struct module_type {
 	u32 load_type  : 4;
 	u32 auto_start : 1;
 	u32 domain_ll  : 1;
 	u32 domain_dp  : 1;
 	u32 rsvd       : 25;
 } __packed;

 struct adsp_module_entry {
 	u32 struct_id;
 	u8  name[8];
 	struct UUID uuid;
 	struct module_type type;
 	u8  hash1[DEFAULT_HASH_SHA256_LEN];
 	u32 entry_point;
 	u16 cfg_offset;
 	u16 cfg_count;
 	u32 affinity_mask;
 	u16 instance_max_count;
 	u16 instance_bss_size;
 	struct segment_desc segments[3];
 } __packed;

 struct adsp_fw_hdr {
 	u32 id;
 	u32 len;
 	u8  name[8];
 	u32 preload_page_count;
 	u32 fw_image_flags;
 	u32 feature_mask;
 	u16 major;
 	u16 minor;
 	u16 hotfix;
 	u16 build;
 	u32 num_modules;
 	u32 hw_buf_base;
 	u32 hw_buf_length;
 	u32 load_offset;
 } __packed;

 struct skl_ext_manifest_hdr {
 	u32 id;
 	u32 len;
 	u16 version_major;
 	u16 version_minor;
 	u32 entries;
 };

 static int skl_get_pvtid_map(struct uuid_module *module, int instance_id)
 {
 	int pvt_id;

 	for (pvt_id = 0; pvt_id < module->max_instance; pvt_id++) {
 		if (module->instance_id[pvt_id] == instance_id)
 			return pvt_id;
 	}
 	return -EINVAL;
 }

 int skl_get_pvt_instance_id_map(struct skl_sst *ctx,
 				int module_id, int instance_id)
 {
 	struct uuid_module *module;

 	list_for_each_entry(module, &ctx->uuid_list, list) {
 		if (module->id == module_id)
 			return skl_get_pvtid_map(module, instance_id);
 	}

 	return -EINVAL;
 }
 EXPORT_SYMBOL_GPL(skl_get_pvt_instance_id_map);

 static inline int skl_getid_32(struct uuid_module *module, u64 *val,
 				int word1_mask, int word2_mask)
 {
 	int index, max_inst, pvt_id;
 	u32 mask_val;

 	max_inst =  module->max_instance;
 	mask_val = (u32)(*val >> word1_mask);

 	if (mask_val != 0xffffffff) {
 		index = ffz(mask_val);
 		pvt_id = index + word1_mask + word2_mask;
 		if (pvt_id <= (max_inst - 1)) {
 			*val |= 1ULL << (index + word1_mask);
 			return pvt_id;
 		}
 	}

 	return -EINVAL;
 }

 static inline int skl_pvtid_128(struct uuid_module *module)
 {
 	int j, i, word1_mask, word2_mask = 0, pvt_id;

 	for (j = 0; j < MAX_INSTANCE_BUFF; j++) {
 		word1_mask = 0;

 		for (i = 0; i < 2; i++) {
 			pvt_id = skl_getid_32(module, &module->pvt_id[j],
 						word1_mask, word2_mask);
 			if (pvt_id >= 0)
 				return pvt_id;

 			word1_mask += 32;
 			if ((word1_mask + word2_mask) >= module->max_instance)
 				return -EINVAL;
 		}

 		word2_mask += 64;
 		if (word2_mask >= module->max_instance)
 			return -EINVAL;
 	}

 	return -EINVAL;
 }

 /**
  * skl_get_pvt_id: generate a private id for use as module id
  *
  * @ctx: driver context
  * @mconfig: module configuration data
  *
  * This generates a 128 bit private unique id for a module TYPE so that
  * module instance is unique
  */
 int skl_get_pvt_id(struct skl_sst *ctx, uuid_le *uuid_mod, int instance_id)
 {
 	struct uuid_module *module;
 	int pvt_id;

 	list_for_each_entry(module, &ctx->uuid_list, list) {
 		if (uuid_le_cmp(*uuid_mod, module->uuid) == 0) {

 			pvt_id = skl_pvtid_128(module);
 			if (pvt_id >= 0) {
 				module->instance_id[pvt_id] = instance_id;

 				return pvt_id;
 			}
 		}
 	}

 	return -EINVAL;
 }
 EXPORT_SYMBOL_GPL(skl_get_pvt_id);

 /**
  * skl_put_pvt_id: free up the private id allocated
  *
  * @ctx: driver context
  * @mconfig: module configuration data
  *
  * This frees a 128 bit private unique id previously generated
  */
 int skl_put_pvt_id(struct skl_sst *ctx, uuid_le *uuid_mod, int *pvt_id)
 {
 	int i;
 	struct uuid_module *module;

 	list_for_each_entry(module, &ctx->uuid_list, list) {
 		if (uuid_le_cmp(*uuid_mod, module->uuid) == 0) {

 			if (*pvt_id != 0)
 				i = (*pvt_id) / 64;
 			else
 				i = 0;

 			module->pvt_id[i] &= ~(1 << (*pvt_id));
 			*pvt_id = -1;
 			return 0;
 		}
 	}

 	return -EINVAL;
 }
 EXPORT_SYMBOL_GPL(skl_put_pvt_id);

 /*
  * Parse the firmware binary to get the UUID, module id
  * and loadable flags
  */
 int snd_skl_parse_uuids(struct sst_dsp *ctx, const struct firmware *fw,
 			unsigned int offset, int index)
 {
 	struct adsp_fw_hdr *adsp_hdr;
 	struct adsp_module_entry *mod_entry;
 	int i, num_entry, size;
 	uuid_le *uuid_bin;
 	const char *buf;
 	struct skl_sst *skl = ctx->thread_context;
 	struct uuid_module *module;
 	struct firmware stripped_fw;
 	unsigned int safe_file;

 	/* Get the FW pointer to derive ADSP header */
 	stripped_fw.data = fw->data;
 	stripped_fw.size = fw->size;

 	skl_dsp_strip_extended_manifest(&stripped_fw);

 	buf = stripped_fw.data;

 	/* check if we have enough space in file to move to header */
 	safe_file = sizeof(*adsp_hdr) + offset;
 	if (stripped_fw.size <= safe_file) {
 		dev_err(ctx->dev, "Small fw file size, No space for hdr\n");
 		return -EINVAL;
 	}

 	adsp_hdr = (struct adsp_fw_hdr *)(buf + offset);

 	/* check 1st module entry is in file */
 	safe_file += adsp_hdr->len + sizeof(*mod_entry);
 	if (stripped_fw.size <= safe_file) {
 		dev_err(ctx->dev, "Small fw file size, No module entry\n");
 		return -EINVAL;
 	}

 	mod_entry = (struct adsp_module_entry *)
 		(buf + offset + adsp_hdr->len);

 	num_entry = adsp_hdr->num_modules;

 	/* check all entries are in file */
 	safe_file += num_entry * sizeof(*mod_entry);
 	if (stripped_fw.size <= safe_file) {
 		dev_err(ctx->dev, "Small fw file size, No modules\n");
 		return -EINVAL;
 	}


 	/*
 	 * Read the UUID(GUID) from FW Manifest.
 	 *
 	 * The 16 byte UUID format is: XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXX
 	 * Populate the UUID table to store module_id and loadable flags
 	 * for the module.
 	 */

 	for (i = 0; i < num_entry; i++, mod_entry++) {
 		module = kzalloc(sizeof(*module), GFP_KERNEL);
 		if (!module)
 			return -ENOMEM;

 		uuid_bin = (uuid_le *)mod_entry->uuid.id;
 		memcpy(&module->uuid, uuid_bin, sizeof(module->uuid));

 		module->id = (i | (index << 12));
 		module->is_loadable = mod_entry->type.load_type;
 		module->max_instance = mod_entry->instance_max_count;
 		size = sizeof(int) * mod_entry->instance_max_count;
 		module->instance_id = devm_kzalloc(ctx->dev, size, GFP_KERNEL);
 		if (!module->instance_id) {
 			kfree(module);
 			return -ENOMEM;
 		}

 		list_add_tail(&module->list, &skl->uuid_list);

 		dev_dbg(ctx->dev,
 			"Adding uuid :%pUL   mod id: %d  Loadable: %d\n",
 			&module->uuid, module->id, module->is_loadable);
 	}

 	return 0;
 }

 void skl_freeup_uuid_list(struct skl_sst *ctx)
 {
 	struct uuid_module *uuid, *_uuid;

 	list_for_each_entry_safe(uuid, _uuid, &ctx->uuid_list, list) {
 		list_del(&uuid->list);
 		kfree(uuid);
 	}
 }

 /*
  * some firmware binary contains some extended manifest. This needs
  * to be stripped in that case before we load and use that image.
  *
  * Get the module id for the module by checking
  * the table for the UUID for the module
  */
 int skl_dsp_strip_extended_manifest(struct firmware *fw)
 {
 	struct skl_ext_manifest_hdr *hdr;

 	/* check if fw file is greater than header we are looking */
 	if (fw->size < sizeof(hdr)) {
 		pr_err("%s: Firmware file small, no hdr\n", __func__);
 		return -EINVAL;
 	}

 	hdr = (struct skl_ext_manifest_hdr *)fw->data;

 	if (hdr->id == SKL_EXT_MANIFEST_HEADER_MAGIC) {
 		fw->size -= hdr->len;
 		fw->data += hdr->len;
 	}

 	return 0;
 }

 int skl_sst_ctx_init(struct device *dev, int irq, const char *fw_name,
 	struct skl_dsp_loader_ops dsp_ops, struct skl_sst **dsp,
 	struct sst_dsp_device *skl_dev)
 {
 	struct skl_sst *skl;
 	struct sst_dsp *sst;

 	skl = devm_kzalloc(dev, sizeof(*skl), GFP_KERNEL);
 	if (skl == NULL)
 		return -ENOMEM;

 	skl->dev = dev;
 	skl_dev->thread_context = skl;
 	INIT_LIST_HEAD(&skl->uuid_list);
 	skl->dsp = skl_dsp_ctx_init(dev, skl_dev, irq);
 	if (!skl->dsp) {
 		dev_err(skl->dev, "%s: no device\n", __func__);
 		return -ENODEV;
 	}

 	sst = skl->dsp;
 	sst->fw_name = fw_name;
 	sst->dsp_ops = dsp_ops;
 	init_waitqueue_head(&skl->mod_load_wait);
 	INIT_LIST_HEAD(&sst->module_list);

 	skl->is_first_boot = true;
 	if (dsp)
 		*dsp = skl;

 	return 0;
 }

 int skl_prepare_lib_load(struct skl_sst *skl, struct skl_lib_info *linfo,
 		struct firmware *stripped_fw,
 		unsigned int hdr_offset, int index)
 {
 	int ret;
 	struct sst_dsp *dsp = skl->dsp;

 	if (linfo->fw == NULL) {
 		ret = request_firmware(&linfo->fw, linfo->name,
 					skl->dev);
 		if (ret < 0) {
 			dev_err(skl->dev, "Request lib %s failed:%d\n",
 				linfo->name, ret);
 			return ret;
 		}
 	}

 	if (skl->is_first_boot) {
 		ret = snd_skl_parse_uuids(dsp, linfo->fw, hdr_offset, index);
 		if (ret < 0)
 			return ret;
 	}

 	stripped_fw->data = linfo->fw->data;
 	stripped_fw->size = linfo->fw->size;
 	skl_dsp_strip_extended_manifest(stripped_fw);

 	return 0;
 }

 void skl_release_library(struct skl_lib_info *linfo, int lib_count)
 {
 	int i;

 	/* library indices start from 1 to N. 0 represents base FW */
 	for (i = 1; i < lib_count; i++) {
 		if (linfo[i].fw) {
 			release_firmware(linfo[i].fw);
 			linfo[i].fw = NULL;
 		}
 	}
 }
	/*
	* skl-sst-utils.c - SKL sst utils functions
	*
	* Copyright (C) 2016 Intel Corp
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as version 2, as
	* published by the Free Software Foundation.
	*
	* This program is distributed in the hope that it will be useful, but
	* WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* General Public License for more details.
	*/

	#include <linux/device.h>
	#include <linux/slab.h>
	#include <linux/uuid.h>
	#include "skl-sst-dsp.h"
	#include "../common/sst-dsp.h"
	#include "../common/sst-dsp-priv.h"
	#include "skl-sst-ipc.h"


	#define UUID_STR_SIZE 37
	#define DEFAULT_HASH_SHA256_LEN 32

	/* FW Extended Manifest Header id = $AE1 */
	#define SKL_EXT_MANIFEST_HEADER_MAGIC 0x31454124

	struct UUID {
	u8 id[16];
	};

	union seg_flags {
	u32 ul;
	struct {
	u32 contents : 1;
	u32 alloc : 1;
	u32 load : 1;
	u32 read_only : 1;
	u32 code : 1;
	u32 data : 1;
	u32 _rsvd0 : 2;
	u32 type : 4;
	u32 _rsvd1 : 4;
	u32 length : 16;
	} r;
	} __packed;

	struct segment_desc {
	union seg_flags flags;
	u32 v_base_addr;
	u32 file_offset;
	};

	struct module_type {
	u32 load_type : 4;
	u32 auto_start : 1;
	u32 domain_ll : 1;
	u32 domain_dp : 1;
	u32 rsvd : 25;
	} __packed;

	struct adsp_module_entry {
	u32 struct_id;
	u8 name[8];
	struct UUID uuid;
	struct module_type type;
	u8 hash1[DEFAULT_HASH_SHA256_LEN];
	u32 entry_point;
	u16 cfg_offset;
	u16 cfg_count;
	u32 affinity_mask;
	u16 instance_max_count;
	u16 instance_bss_size;
	struct segment_desc segments[3];
	} __packed;

	struct adsp_fw_hdr {
	u32 id;
	u32 len;
	u8 name[8];
	u32 preload_page_count;
	u32 fw_image_flags;
	u32 feature_mask;
	u16 major;
	u16 minor;
	u16 hotfix;
	u16 build;
	u32 num_modules;
	u32 hw_buf_base;
	u32 hw_buf_length;
	u32 load_offset;
	} __packed;

	struct skl_ext_manifest_hdr {
	u32 id;
	u32 len;
	u16 version_major;
	u16 version_minor;
	u32 entries;
	};

	static int skl_get_pvtid_map(struct uuid_module *module, int instance_id)
	{
	int pvt_id;

	for (pvt_id = 0; pvt_id < module->max_instance; pvt_id++) {
	if (module->instance_id[pvt_id] == instance_id)
	return pvt_id;
	}
	return -EINVAL;
	}

	int skl_get_pvt_instance_id_map(struct skl_sst *ctx,
	int module_id, int instance_id)
	{
	struct uuid_module *module;

	list_for_each_entry(module, &ctx->uuid_list, list) {
	if (module->id == module_id)
	return skl_get_pvtid_map(module, instance_id);
	}

	return -EINVAL;
	}
	EXPORT_SYMBOL_GPL(skl_get_pvt_instance_id_map);

	static inline int skl_getid_32(struct uuid_module module, u64 val,
	int word1_mask, int word2_mask)
	{
	int index, max_inst, pvt_id;
	u32 mask_val;

	max_inst = module->max_instance;
	mask_val = (u32)(*val >> word1_mask);

	if (mask_val != 0xffffffff) {
	index = ffz(mask_val);
	pvt_id = index + word1_mask + word2_mask;
	if (pvt_id <= (max_inst - 1)) {
	*val \|= 1ULL << (index + word1_mask);
	return pvt_id;
	}
	}

	return -EINVAL;
	}

	static inline int skl_pvtid_128(struct uuid_module *module)
	{
	int j, i, word1_mask, word2_mask = 0, pvt_id;

	for (j = 0; j < MAX_INSTANCE_BUFF; j++) {
	word1_mask = 0;

	for (i = 0; i < 2; i++) {
	pvt_id = skl_getid_32(module, &module->pvt_id[j],
	word1_mask, word2_mask);
	if (pvt_id >= 0)
	return pvt_id;

	word1_mask += 32;
	if ((word1_mask + word2_mask) >= module->max_instance)
	return -EINVAL;
	}

	word2_mask += 64;
	if (word2_mask >= module->max_instance)
	return -EINVAL;
	}

	return -EINVAL;
	}

	/**
	* skl_get_pvt_id: generate a private id for use as module id
	*
	* @ctx: driver context
	* @mconfig: module configuration data
	*
	* This generates a 128 bit private unique id for a module TYPE so that
	* module instance is unique
	*/
	int skl_get_pvt_id(struct skl_sst ctx, uuid_le uuid_mod, int instance_id)
	{
	struct uuid_module *module;
	int pvt_id;

	list_for_each_entry(module, &ctx->uuid_list, list) {
	if (uuid_le_cmp(*uuid_mod, module->uuid) == 0) {

	pvt_id = skl_pvtid_128(module);
	if (pvt_id >= 0) {
	module->instance_id[pvt_id] = instance_id;

	return pvt_id;
	}
	}
	}

	return -EINVAL;
	}
	EXPORT_SYMBOL_GPL(skl_get_pvt_id);

	/**
	* skl_put_pvt_id: free up the private id allocated
	*
	* @ctx: driver context
	* @mconfig: module configuration data
	*
	* This frees a 128 bit private unique id previously generated
	*/
	int skl_put_pvt_id(struct skl_sst ctx, uuid_le uuid_mod, int *pvt_id)
	{
	int i;
	struct uuid_module *module;

	list_for_each_entry(module, &ctx->uuid_list, list) {
	if (uuid_le_cmp(*uuid_mod, module->uuid) == 0) {

	if (*pvt_id != 0)
	i = (*pvt_id) / 64;
	else
	i = 0;

	module->pvt_id[i] &= ~(1 << (*pvt_id));
	*pvt_id = -1;
	return 0;
	}
	}

	return -EINVAL;
	}
	EXPORT_SYMBOL_GPL(skl_put_pvt_id);

	/*
	* Parse the firmware binary to get the UUID, module id
	* and loadable flags
	*/
	int snd_skl_parse_uuids(struct sst_dsp ctx, const struct firmware fw,
	unsigned int offset, int index)
	{
	struct adsp_fw_hdr *adsp_hdr;
	struct adsp_module_entry *mod_entry;
	int i, num_entry, size;
	uuid_le *uuid_bin;
	const char *buf;
	struct skl_sst *skl = ctx->thread_context;
	struct uuid_module *module;
	struct firmware stripped_fw;
	unsigned int safe_file;

	/* Get the FW pointer to derive ADSP header */
	stripped_fw.data = fw->data;
	stripped_fw.size = fw->size;

	skl_dsp_strip_extended_manifest(&stripped_fw);

	buf = stripped_fw.data;

	/* check if we have enough space in file to move to header */
	safe_file = sizeof(*adsp_hdr) + offset;
	if (stripped_fw.size <= safe_file) {
	dev_err(ctx->dev, "Small fw file size, No space for hdr\n");
	return -EINVAL;
	}

	adsp_hdr = (struct adsp_fw_hdr *)(buf + offset);

	/* check 1st module entry is in file */
	safe_file += adsp_hdr->len + sizeof(*mod_entry);
	if (stripped_fw.size <= safe_file) {
	dev_err(ctx->dev, "Small fw file size, No module entry\n");
	return -EINVAL;
	}

	mod_entry = (struct adsp_module_entry *)
	(buf + offset + adsp_hdr->len);

	num_entry = adsp_hdr->num_modules;

	/* check all entries are in file */
	safe_file += num_entry * sizeof(*mod_entry);
	if (stripped_fw.size <= safe_file) {
	dev_err(ctx->dev, "Small fw file size, No modules\n");
	return -EINVAL;
	}


	/*
	* Read the UUID(GUID) from FW Manifest.
	*
	* The 16 byte UUID format is: XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXX
	* Populate the UUID table to store module_id and loadable flags
	* for the module.
	*/

	for (i = 0; i < num_entry; i++, mod_entry++) {
	module = kzalloc(sizeof(*module), GFP_KERNEL);
	if (!module)
	return -ENOMEM;

	uuid_bin = (uuid_le *)mod_entry->uuid.id;
	memcpy(&module->uuid, uuid_bin, sizeof(module->uuid));

	module->id = (i \| (index << 12));
	module->is_loadable = mod_entry->type.load_type;
	module->max_instance = mod_entry->instance_max_count;
	size = sizeof(int) * mod_entry->instance_max_count;
	module->instance_id = devm_kzalloc(ctx->dev, size, GFP_KERNEL);
	if (!module->instance_id) {
	kfree(module);
	return -ENOMEM;
	}

	list_add_tail(&module->list, &skl->uuid_list);

	dev_dbg(ctx->dev,
	"Adding uuid :%pUL mod id: %d Loadable: %d\n",
	&module->uuid, module->id, module->is_loadable);
	}

	return 0;
	}

	void skl_freeup_uuid_list(struct skl_sst *ctx)
	{
	struct uuid_module uuid, _uuid;

	list_for_each_entry_safe(uuid, _uuid, &ctx->uuid_list, list) {
	list_del(&uuid->list);
	kfree(uuid);
	}
	}

	/*
	* some firmware binary contains some extended manifest. This needs
	* to be stripped in that case before we load and use that image.
	*
	* Get the module id for the module by checking
	* the table for the UUID for the module
	*/
	int skl_dsp_strip_extended_manifest(struct firmware *fw)
	{
	struct skl_ext_manifest_hdr *hdr;

	/* check if fw file is greater than header we are looking */
	if (fw->size < sizeof(hdr)) {
	pr_err("%s: Firmware file small, no hdr\n", __func__);
	return -EINVAL;
	}

	hdr = (struct skl_ext_manifest_hdr *)fw->data;

	if (hdr->id == SKL_EXT_MANIFEST_HEADER_MAGIC) {
	fw->size -= hdr->len;
	fw->data += hdr->len;
	}

	return 0;
	}

	int skl_sst_ctx_init(struct device dev, int irq, const char fw_name,
	struct skl_dsp_loader_ops dsp_ops, struct skl_sst **dsp,
	struct sst_dsp_device *skl_dev)
	{
	struct skl_sst *skl;
	struct sst_dsp *sst;

	skl = devm_kzalloc(dev, sizeof(*skl), GFP_KERNEL);
	if (skl == NULL)
	return -ENOMEM;

	skl->dev = dev;
	skl_dev->thread_context = skl;
	INIT_LIST_HEAD(&skl->uuid_list);
	skl->dsp = skl_dsp_ctx_init(dev, skl_dev, irq);
	if (!skl->dsp) {
	dev_err(skl->dev, "%s: no device\n", __func__);
	return -ENODEV;
	}

	sst = skl->dsp;
	sst->fw_name = fw_name;
	sst->dsp_ops = dsp_ops;
	init_waitqueue_head(&skl->mod_load_wait);
	INIT_LIST_HEAD(&sst->module_list);

	skl->is_first_boot = true;
	if (dsp)
	*dsp = skl;

	return 0;
	}

	int skl_prepare_lib_load(struct skl_sst skl, struct skl_lib_info linfo,
	struct firmware *stripped_fw,
	unsigned int hdr_offset, int index)
	{
	int ret;
	struct sst_dsp *dsp = skl->dsp;

	if (linfo->fw == NULL) {
	ret = request_firmware(&linfo->fw, linfo->name,
	skl->dev);
	if (ret < 0) {
	dev_err(skl->dev, "Request lib %s failed:%d\n",
	linfo->name, ret);
	return ret;
	}
	}

	if (skl->is_first_boot) {
	ret = snd_skl_parse_uuids(dsp, linfo->fw, hdr_offset, index);
	if (ret < 0)
	return ret;
	}

	stripped_fw->data = linfo->fw->data;
	stripped_fw->size = linfo->fw->size;
	skl_dsp_strip_extended_manifest(stripped_fw);

	return 0;
	}

	void skl_release_library(struct skl_lib_info *linfo, int lib_count)
	{
	int i;

	/* library indices start from 1 to N. 0 represents base FW */
	for (i = 1; i < lib_count; i++) {
	if (linfo[i].fw) {
	release_firmware(linfo[i].fw);
	linfo[i].fw = NULL;
	}
	}
	}