diff --git a/src/include/sof/lib_manager.h b/src/include/sof/lib_manager.h
index ba1f8eadbfb0..96915cb639e8 100644
--- a/src/include/sof/lib_manager.h
+++ b/src/include/sof/lib_manager.h
@@ -96,13 +96,14 @@ struct lib_manager_segment_desc {
 };
 
 struct lib_manager_module {
-	unsigned int start_idx;
+	unsigned int start_idx;	/* Index of the first driver from this module in
+				 * the library-global driver list */
 	const struct sof_man_module_manifest *mod_manifest;
 	struct lib_manager_segment_desc segment[LIB_MANAGER_N_SEGMENTS];
 };
 
 struct lib_manager_mod_ctx {
-	void *base_addr;
+	void *base_addr;	/* library cold storage address (e.g. DRAM) */
 	unsigned int n_mod;
 	struct lib_manager_module *mod;
 };
diff --git a/src/ipc/ipc-common.c b/src/ipc/ipc-common.c
index 6557fdd50b59..244a218d5be8 100644
--- a/src/ipc/ipc-common.c
+++ b/src/ipc/ipc-common.c
@@ -252,6 +252,7 @@ void ipc_msg_send(struct ipc_msg *msg, void *data, bool high_priority)
 
 	k_spin_unlock(&ipc->lock, key);
 }
+EXPORT_SYMBOL(ipc_msg_send);
 
 #ifdef __ZEPHYR__
 static void ipc_work_handler(struct k_work *work)
diff --git a/src/library_manager/llext_manager.c b/src/library_manager/llext_manager.c
index 0aaa0797419f..c2cd5254ed76 100644
--- a/src/library_manager/llext_manager.c
+++ b/src/library_manager/llext_manager.c
@@ -230,7 +230,7 @@ static bool llext_manager_section_detached(const elf_shdr_t *shdr)
 }
 
 static int llext_manager_link(struct llext_buf_loader *ebl, const char *name,
-			      struct lib_manager_module *mctx, struct module_data *md,
+			      struct lib_manager_module *mctx, struct llext **llext,
 			      const void **buildinfo,
 			      const struct sof_man_module_manifest **mod_manifest)
 {
@@ -240,7 +240,7 @@ static int llext_manager_link(struct llext_buf_loader *ebl, const char *name,
 		.pre_located = true,
 		.section_detached = llext_manager_section_detached,
 	};
-	int ret = llext_load(&ebl->loader, name, &md->llext, &ldr_parm);
+	int ret = llext_load(&ebl->loader, name, llext, &ldr_parm);
 
 	if (ret)
 		return ret;
@@ -284,9 +284,10 @@ static int llext_manager_link(struct llext_buf_loader *ebl, const char *name,
 }
 
 static int llext_manager_mod_init(struct lib_manager_mod_ctx *ctx,
-				  const struct sof_man_fw_desc *desc,
-				  const struct sof_man_module *mod_array)
+				  const struct sof_man_fw_desc *desc)
 {
+	struct sof_man_module *mod_array = (struct sof_man_module *)((uint8_t *)desc +
+								     SOF_MAN_MODULE_OFFSET(0));
 	unsigned int i, n_mod;
 	size_t offs;
 
@@ -356,7 +357,7 @@ uintptr_t llext_manager_allocate_module(struct processing_module *proc,
 	tr_dbg(&lib_manager_tr, "mod_id: %#x", ipc_config->id);
 
 	if (!ctx->mod)
-		llext_manager_mod_init(ctx, desc, mod_array);
+		llext_manager_mod_init(ctx, desc);
 
 	if (entry_index >= desc->header.num_module_entries) {
 		tr_err(&lib_manager_tr, "Invalid driver index %u exceeds %d",
@@ -407,7 +408,7 @@ uintptr_t llext_manager_allocate_module(struct processing_module *proc,
 	struct llext_buf_loader ebl = LLEXT_BUF_LOADER((uint8_t *)dram_base + mod_offset, mod_size);
 
 	/* LLEXT linking is only needed once for all the drivers in each module */
-	ret = llext_manager_link(&ebl, mod_array[entry_index - inst_idx].name, mctx, md,
+	ret = llext_manager_link(&ebl, mod_array[entry_index - inst_idx].name, mctx, &md->llext,
 				 (const void **)&buildinfo, &mod_manifest);
 	if (ret < 0) {
 		tr_err(&lib_manager_tr, "linking failed: %d", ret);
diff --git a/src/math/sqrt_int16.c b/src/math/sqrt_int16.c
index 0d62e8145187..9068717d638d 100644
--- a/src/math/sqrt_int16.c
+++ b/src/math/sqrt_int16.c
@@ -6,6 +6,7 @@
 //
 //
 
+#include <rtos/symbol.h>
 #include <sof/math/sqrt.h>
 
 #define SQRT_WRAP_SCHAR_BITS 0xFF
@@ -145,3 +146,4 @@ uint16_t sqrt_int16(uint16_t u)
 
 	return y;
 }
+EXPORT_SYMBOL(sqrt_int16);
diff --git a/src/math/trig.c b/src/math/trig.c
index ee5014cf91d2..32613d393034 100644
--- a/src/math/trig.c
+++ b/src/math/trig.c
@@ -7,6 +7,7 @@
 //         Keyon Jie <yang.jie@linux.intel.com>
 //         Shriram Shastry <malladi.sastry@linux.intel.com>
 
+#include <rtos/symbol.h>
 #include <sof/audio/format.h>
 #include <sof/math/trig.h>
 #include <sof/math/cordic.h>
@@ -99,6 +100,7 @@ void cordic_approx(int32_t th_rad_fxp, int32_t a_idx, int32_t *sign, int32_t *b_
 	/* Q2.30 format -sine, cosine*/
 	*th_cdc_fxp = th_rad_fxp;
 }
+EXPORT_SYMBOL(cordic_approx);
 
 /**
  * CORDIC-based approximation for inverse cosine
diff --git a/zephyr/CMakeLists.txt b/zephyr/CMakeLists.txt
index ed4f7e904d2e..ac70953d8dec 100644
--- a/zephyr/CMakeLists.txt
+++ b/zephyr/CMakeLists.txt
@@ -650,7 +650,7 @@ endif()
 if(CONFIG_COMP_FIR STREQUAL "m")
 	add_subdirectory(${SOF_AUDIO_PATH}/eq_fir/llext
 			 ${PROJECT_BINARY_DIR}/eq_fir_llext)
-	add_dependencies(app eq_iir)
+	add_dependencies(app eq_fir)
 elseif(CONFIG_COMP_FIR)
 	zephyr_library_sources(
 		${SOF_AUDIO_PATH}/eq_fir/eq_fir_hifi3.c