Downmerge more changes to enable SDC w nrf54l15bsim

boards/native/nrf_bsim/nrf54l15bsim_nrf54l15_cpuapp_defconfig

@@ -6,3 +6,5 @@ CONFIG_NO_OPTIMIZATIONS=y
 
 # Start SYSCOUNTER on driver init
 CONFIG_NRF_GRTC_START_SYSCOUNTER=y
+
+CONFIG_FAKE_ENTROPY_NATIVE_POSIX_SEED_BY_DEFAULT=n

drivers/entropy/Kconfig.native_posix

@@ -12,3 +12,12 @@ config FAKE_ENTROPY_NATIVE_POSIX
 	  not generate real entropy.
 	  It actually generates always the same sequence of random numbers if
 	  initialized with the same seed.
+
+config FAKE_ENTROPY_NATIVE_POSIX_SEED_BY_DEFAULT
+	bool "Seed the generator by default"
+	default y
+	depends on FAKE_ENTROPY_NATIVE_POSIX
+	help
+	  Apply a seed by default, even if the user does not request it through the command line.
+	  Disabling this feature allows some other component to seed the host standard library random
+	  generator without this component's default initialization interfering.

drivers/entropy/fake_entropy_native_posix.c

@@ -27,6 +27,7 @@
 
 static unsigned int seed = 0x5678;
 static bool seed_random;
+static bool seed_set;
 
 static int entropy_native_posix_get_entropy(const struct device *dev,
 					    uint8_t *buffer,
@@ -69,7 +70,10 @@ static int entropy_native_posix_get_entropy_isr(const struct device *dev,
 static int entropy_native_posix_init(const struct device *dev)
 {
 	ARG_UNUSED(dev);
-	entropy_native_seed(seed, seed_random);
+	if (seed_set || seed_random ||
+	    IS_ENABLED(CONFIG_FAKE_ENTROPY_NATIVE_POSIX_SEED_BY_DEFAULT)) {
+		entropy_native_seed(seed, seed_random);
+	}
 	posix_print_warning("WARNING: "
 			    "Using a test - not safe - entropy source\n");
 	return 0;
@@ -86,6 +90,13 @@ DEVICE_DT_INST_DEFINE(0,
 		    PRE_KERNEL_1, CONFIG_ENTROPY_INIT_PRIORITY,
 		    &entropy_native_posix_api_funcs);
 
+static void seed_was_set(char *argv, int offset)
+{
+	ARG_UNUSED(argv);
+	ARG_UNUSED(offset);
+	seed_set = true;
+}
+
 static void add_fake_entropy_option(void)
 {
 	static struct args_struct_t entropy_options[] = {
@@ -94,6 +105,7 @@ static void add_fake_entropy_option(void)
 			.name = "r_seed",
 			.type = 'u',
 			.dest = (void *)&seed,
+			.call_when_found = seed_was_set,
 			.descript = "A 32-bit integer seed value for the entropy device, such as "
 				    "97229 (decimal), 0x17BCD (hex), or 0275715 (octal)"
 		},

west.yml

@@ -295,7 +295,7 @@ manifest:
       groups:
         - tools
     - name: nrf_hw_models
-      revision: 4b0b020e25dbf1a11ccccf7b7741d6ca991ba9e4
+      revision: d2a119a9c7600ce06033a794de042e0ad9a38702
       path: modules/bsim_hw_models/nrf_hw_models
     - name: open-amp
       revision: da78aea63159771956fe0c9263f2e6985b66e9d5