lib: alloc: Use aligned allocation for L3_HEAP usage.

L3_HEAP is used in library manager for library storage buffer allocation
and in D3 enter/exit flows to allocate IMR context storage buffer.
Both buffers should be aligned so use rballoc_align() routine to get
correctly aligned buffers.

Signed-off-by: Jaroslaw Stelter <Jaroslaw.Stelter@intel.com>

Author: jxstelter

src/library_manager/lib_manager.c

@@ -539,16 +539,14 @@ static void __sparse_cache *lib_manager_allocate_store_mem(uint32_t size,
 	void __sparse_cache *local_add;
 #if CONFIG_L3_HEAP
 	uint32_t caps = SOF_MEM_CAPS_L3 | SOF_MEM_CAPS_DMA;
-
-	/* allocate new buffer: cached alias */
-	local_add = (__sparse_force void __sparse_cache *)rmalloc(SOF_MEM_ZONE_SYS, 0, caps, size);
 #else
-	uint32_t addr_align = PAGE_SZ;
 	uint32_t caps = SOF_MEM_CAPS_DMA;
+#endif
 
+	uint32_t addr_align = PAGE_SZ;
 	/* allocate new buffer: cached alias */
 	local_add = (__sparse_force void __sparse_cache *)rballoc_align(0, caps, size, addr_align);
-#endif
+
 	if (!local_add) {
 		tr_err(&lib_manager_tr, "lib_manager_allocate_store_mem(): alloc failed");
 		return NULL;

zephyr/lib/cpu.c

@@ -96,10 +96,16 @@ void cpu_notify_state_entry(enum pm_state state)
 		storage_buffer_size += LP_SRAM_SIZE;
 
 		/* allocate IMR buffer and store it in the global pointer */
-		global_imr_ram_storage = rmalloc(SOF_MEM_ZONE_SYS_RUNTIME,
-						 0,
-						 SOF_MEM_CAPS_L3,
-						 storage_buffer_size);
+		global_imr_ram_storage = rballoc_align(0, SOF_MEM_CAPS_L3,
+						       storage_buffer_size,
+						       PLATFORM_DCACHE_ALIGN);
+
+		/* If no IMR buffer we can not recover */
+		if (!global_imr_ram_storage) {
+			tr_err(&zephyr_tr, "failed to allocate global_imr_ram_storage");
+			k_panic();
+		}
+
 #endif /* CONFIG_ADSP_IMR_CONTEXT_SAVE */
 	}
 }