[nrf fromlist] soc: nrf54: Port SYS_INIT to use soc_early_init_hook

Port SYS_INIT to use soc_early_init_hook as SYS_INITs are legacy.

Upstream PR #: 88908

Signed-off-by: Sebastian Bøe <[email protected]>

Author: SebastianBoe

soc/nordic/common/dmm.c

@@ -295,3 +295,10 @@ int dmm_init(void)
 
 	return 0;
 }
+
+/*
+ * dmm_init relies on kheap, initialized in PRE_KERNEL_1 at
+ * CONFIG_KERNEL_INIT_PRIORITY_OBJECTS. To enable early device use of
+ * dmm, we initialize immediately after kheap.
+ */
+SYS_INIT(dmm_init, PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);

soc/nordic/nrf54h/Kconfig

@@ -7,6 +7,7 @@ config SOC_SERIES_NRF54HX
 	select HAS_NRFS
 	select HAS_NRFX
 	select HAS_NORDIC_DRIVERS
+	select SOC_EARLY_INIT_HOOK if ARM
 	select NRF_PLATFORM_HALTIUM
 
 config SOC_NRF54H20_CPUAPP_COMMON

soc/nordic/nrf54h/soc.c

@@ -126,22 +126,15 @@ bool z_arm_on_enter_cpu_idle(void)
 }
 #endif
 
-static int nordicsemi_nrf54h_init(void)
+void soc_early_init_hook(void)
 {
-	int err;
-
 	sys_cache_instr_enable();
 	sys_cache_data_enable();
 
 	power_domain_init();
 
 	trim_hsfll();
 
-	err = dmm_init();
-	if (err < 0) {
-		return err;
-	}
-
 #if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(ccm030))
 	/* DMASEC is set to non-secure by default, which prevents CCM from
 	 * accessing secure memory. Change DMASEC to secure.
@@ -156,13 +149,9 @@ static int nordicsemi_nrf54h_init(void)
 	    DT_PROP_OR(DT_NODELABEL(nfct), nfct_pins_as_gpios, 0)) {
 		nrf_nfct_pad_config_enable_set(NRF_NFCT, false);
 	}
-
-	return 0;
 }
 
 void arch_busy_wait(uint32_t time_us)
 {
 	nrfx_coredep_delay_us(time_us);
 }
-
-SYS_INIT(nordicsemi_nrf54h_init, PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);