mem: add initialization of virt memory region for LLEXT modules

This commit adds initialization of virtual memory region dedicated
for LLEXT loadable modules.

Signed-off-by: Marcin Szkudlinski <marcin.szkudlinski@intel.com>

Author: marcinszkudlinski

app/boards/intel_adsp_ace15_mtpm.conf

@@ -83,6 +83,7 @@ CONFIG_WATCHDOG=y
 CONFIG_TIMESLICE_PER_THREAD=y
 CONFIG_THREAD_RUNTIME_STATS=y
 CONFIG_SCHED_THREAD_USAGE=y
+CONFIG_MM_DRV_INTEL_VIRTUAL_REGION_COUNT=2
 
 # Zephyr / device drivers
 CONFIG_CLOCK_CONTROL=y

app/boards/intel_adsp_ace20_lnl.conf

@@ -63,6 +63,7 @@ CONFIG_LLEXT_STORAGE_WRITABLE=y
 CONFIG_LLEXT_EXPERIMENTAL=y
 CONFIG_MODULES=y
 CONFIG_TIMING_FUNCTIONS=y
+CONFIG_MM_DRV_INTEL_VIRTUAL_REGION_COUNT=2
 
 # Zephyr / device drivers
 CONFIG_CLOCK_CONTROL=y

app/boards/intel_adsp_ace30_ptl.conf

@@ -63,6 +63,7 @@ CONFIG_LLEXT=y
 CONFIG_LLEXT_STORAGE_WRITABLE=y
 CONFIG_LLEXT_EXPERIMENTAL=y
 CONFIG_MODULES=y
+CONFIG_MM_DRV_INTEL_VIRTUAL_REGION_COUNT=2
 
 # Zephyr / device drivers
 CONFIG_CLOCK_CONTROL=y

app/boards/intel_adsp_ace30_wcl.conf

@@ -50,6 +50,7 @@ CONFIG_LLEXT=y
 CONFIG_LLEXT_STORAGE_WRITABLE=y
 CONFIG_LLEXT_EXPERIMENTAL=y
 CONFIG_MODULES=y
+CONFIG_MM_DRV_INTEL_VIRTUAL_REGION_COUNT=2
 
 # Zephyr / device drivers
 CONFIG_CLOCK_CONTROL=y

src/library_manager/Kconfig

@@ -58,4 +58,10 @@ config LIBRARY_BASE_ADDRESS
 	  automatically but the beginning of that area is platform-specific and
 	  should be set by this option.
 
+config LIBRARY_REGION_SIZE
+	hex "Size of memory region dedicated to loadable modules"
+	default 0x100000
+	help
+	  Size of the virtual memory region dedicated for loadable modules
+
 endmenu

src/library_manager/llext_manager.c

@@ -19,6 +19,7 @@
 #include <rtos/spinlock.h>
 #include <sof/lib/cpu-clk-manager.h>
 #include <sof/lib_manager.h>
+#include <sof/lib/regions_mm.h>
 #include <sof/llext_manager.h>
 #include <sof/audio/module_adapter/module/generic.h>
 #include <sof/audio/module_adapter/module/modules.h>
@@ -35,6 +36,7 @@
 #include <rimage/sof/user/manifest.h>
 #include <module/module/api_ver.h>
 
+#include <adsp_memory_regions.h>
 #include <errno.h>
 #include <stdbool.h>
 #include <stddef.h>
@@ -806,3 +808,18 @@ bool comp_is_llext(struct comp_dev *comp)
 
 	return mod && module_is_llext(mod);
 }
+
+static int llext_memory_region_init(void)
+{
+	int ret;
+
+	/* add a region for loadable libraries */
+	ret = adsp_add_virtual_memory_region(CONFIG_LIBRARY_BASE_ADDRESS,
+					     CONFIG_LIBRARY_REGION_SIZE,
+					     VIRTUAL_REGION_LLEXT_LIBRARIES_ATTR);
+
+	return ret;
+}
+
+
+SYS_INIT(llext_memory_region_init, POST_KERNEL, 1);

zephyr/include/sof/lib/regions_mm.h

@@ -19,6 +19,7 @@
 
 /* Attributes for memory regions */
 #define VIRTUAL_REGION_SHARED_HEAP_ATTR 1U	  /*< region dedicated for shared virtual heap */
+#define VIRTUAL_REGION_LLEXT_LIBRARIES_ATTR 2U	  /*< region dedicated for LLEXT libraries */
 
 /* Dependency on ipc/topology.h created due to memory capability definitions
  * that are defined there