soc: riscv: nordic_nrf: nrf54h: introduce PPR support

Add support for the nRF54H PPR (Peripheral Processor), based on the VPR
RISC-V core.

Signed-off-by: Gerard Marull-Paretas <gerard@teslabs.com>

modules/hal_nordic/nrfx/CMakeLists.txt

@@ -45,6 +45,8 @@ zephyr_compile_definitions_ifdef(CONFIG_SOC_NRF54H20_ENGA_CPUAPP NRF54H20_ENGA_X
                                                                  NRF_APPLICATION)
 zephyr_compile_definitions_ifdef(CONFIG_SOC_NRF54H20_ENGA_CPURAD NRF54H20_ENGA_XXAA
                                                                  NRF_RADIOCORE)
+zephyr_compile_definitions_ifdef(CONFIG_SOC_NRF54H20_ENGA_CPUPPR NRF54H20_ENGA_XXAA
+                                                                 NRF_PPR)
 
 zephyr_compile_definitions_ifdef(CONFIG_NRF_APPROTECT_LOCK
                                  ENABLE_APPROTECT)
@@ -178,6 +180,7 @@ mdk_svd_ifdef(CONFIG_SOC_NRF52840             nrf52840.svd)
 mdk_svd_ifdef(CONFIG_SOC_NRF5340_CPUAPP       nrf5340_application.svd)
 mdk_svd_ifdef(CONFIG_SOC_NRF5340_CPUNET       nrf5340_network.svd)
 mdk_svd_ifdef(CONFIG_SOC_NRF54H20_ENGA_CPUAPP nrf54h20_enga_application.svd)
+mdk_svd_ifdef(CONFIG_SOC_NRF54H20_ENGA_CPUPPR nrf54h20_enga_ppr.svd)
 mdk_svd_ifdef(CONFIG_SOC_NRF54H20_ENGA_CPURAD nrf54h20_enga_radiocore.svd)
 mdk_svd_ifdef(CONFIG_SOC_NRF9120              nrf9120.svd)
 mdk_svd_ifdef(CONFIG_SOC_NRF9160              nrf9160.svd)

soc/riscv/nordic_nrf/CMakeLists.txt

@@ -2,3 +2,4 @@
 # SPDX-License-Identifier: Apache-2.0
 
 add_subdirectory(common)
+add_subdirectory(${SOC_SERIES})

soc/riscv/nordic_nrf/Kconfig

@@ -12,4 +12,7 @@ config SOC_FAMILY
 
 source "soc/riscv/nordic_nrf/common/Kconfig"
 
+source "soc/common/nordic_nrf/Kconfig.peripherals"
+source "soc/riscv/nordic_nrf/*/Kconfig.soc"
+
 endif # SOC_FAMILY_NRF

soc/riscv/nordic_nrf/Kconfig.defconfig

@@ -3,6 +3,14 @@
 
 if SOC_FAMILY_NRF
 
+source "soc/riscv/nordic_nrf/*/Kconfig.defconfig.series"
 source "soc/riscv/nordic_nrf/common/Kconfig.defconfig"
 
+config BUILD_OUTPUT_HEX
+	default y
+
+config SYS_CLOCK_HW_CYCLES_PER_SEC
+	default 1000000 if NRF_GRTC_TIMER
+	default 32768 if NRF_RTC_TIMER
+
 endif # SOC_FAMILY_NRF

soc/riscv/nordic_nrf/Kconfig.soc

@@ -0,0 +1,4 @@
+# Copyright (c) 2024 Nordic Semiconductor ASA
+# SPDX-License-Identifier: Apache-2.0
+
+source "soc/riscv/nordic_nrf/*/Kconfig.series"

soc/riscv/nordic_nrf/nrf54h/CMakeLists.txt

@@ -0,0 +1,6 @@
+# Copyright (c) 2024 Nordic Semiconductor
+# SPDX-License-Identifier: Apache-2.0
+
+# Ensure that image size aligns with 16 bytes so that MRAMC finalizes all writes
+# for the image correctly
+zephyr_linker_sources(SECTIONS SORT_KEY zzz_place_align_at_end align.ld)

soc/riscv/nordic_nrf/nrf54h/Kconfig.defconfig.nrf54h20_enga_cpuppr

@@ -0,0 +1,15 @@
+# Copyright (c) 2024 Nordic Semiconductor ASA
+# SPDX-License-Identifier: Apache-2.0
+
+if SOC_NRF54H20_ENGA_CPUPPR
+
+config SOC
+	default "nrf54h20_enga_cpuppr"
+
+config NUM_IRQS
+	default 496
+
+config SYS_CLOCK_TICKS_PER_SEC
+	default 1000
+
+endif # SOC_NRF54H20_ENGA_CPUPPR

soc/riscv/nordic_nrf/nrf54h/Kconfig.defconfig.series

@@ -0,0 +1,19 @@
+# Copyright (c) 2024 Nordic Semiconductor ASA
+# SPDX-License-Identifier: Apache-2.0
+
+if SOC_SERIES_NRF54HX
+
+rsource "Kconfig.defconfig.nrf54h*"
+
+config SOC_SERIES
+	default "nrf54h"
+
+DT_CHOSEN_Z_SRAM = zephyr,sram
+DT_CHOSEN_Z_CODE = zephyr,code-partition
+
+config BUILD_OUTPUT_ADJUST_LMA
+	depends on !XIP
+	default "$(dt_chosen_partition_addr_hex,$(DT_CHOSEN_Z_CODE)) - \
+		 $(dt_chosen_reg_addr_hex,$(DT_CHOSEN_Z_SRAM))"
+
+endif # SOC_SERIES_NRF54HX

soc/riscv/nordic_nrf/nrf54h/Kconfig.series

@@ -0,0 +1,10 @@
+# Copyright (c) 2024 Nordic Semiconductor ASA
+# SPDX-License-Identifier: Apache-2.0
+
+config SOC_SERIES_NRF54HX
+	bool "Nordic Semiconductor nRF54H series MCU"
+	select SOC_FAMILY_NRF
+	select HAS_NRFX
+	select HAS_NORDIC_DRIVERS
+	help
+	  Enable support for nRF54H MCU series

soc/riscv/nordic_nrf/nrf54h/Kconfig.soc

@@ -0,0 +1,19 @@
+# Copyright (c) 2024 Nordic Semiconductor ASA
+# SPDX-License-Identifier: Apache-2.0
+
+config SOC_NRF54H20
+	bool "nRF54H20"
+	depends on SOC_SERIES_NRF54HX
+
+if SOC_NRF54H20
+
+choice
+	prompt "nRF54Hx MCU Selection"
+
+config SOC_NRF54H20_ENGA_CPUPPR
+	bool "nRF54H20 ENGA CPUPPR"
+	select RISCV
+
+endchoice
+
+endif # SOC_NRF54H20

soc/riscv/nordic_nrf/nrf54h/align.ld

@@ -0,0 +1,10 @@
+/*
+ * Copyright (c) 2024 Nordic Semiconductor ASA.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+SECTION_PROLOGUE(.align16,,)
+{
+	. = (ALIGN(16) > 0 ? ALIGN(16) : 16) - 1;
+	BYTE(0);
+} GROUP_LINK_IN(ROMABLE_REGION)