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soc: silabs: siwg917: Initialize the NWP

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Network Processor (NWP) is used to run WiFi, Bluetooth and Flash
drivers.

Co-authored-by: Tibor Laczko <tibor.laczko@silabs.com>
Signed-off-by: Tibor Laczko <tibor.laczko@silabs.com>
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
This commit is contained in:
Jérôme Pouiller 2025-02-04 10:05:29 +01:00 • committed by Benjamin Cabé
commit 4391e4c960
3 changed files with 100 additions and 0 deletions
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soc/silabs/silabs_siwx91x/siwg917/CMakeLists.txt
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@ -2,5 +2,6 @@
# SPDX-License-Identifier: Apache-2.0
zephyr_sources_ifdef(CONFIG_SOC_SERIES_SIWG917 soc.c)
zephyr_sources_ifdef(CONFIG_WISECONNECT_NETWORK_STACK nwp_init.c)
set(SOC_LINKER_SCRIPT ${CMAKE_CURRENT_SOURCE_DIR}/linker.ld CACHE INTERNAL "")

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soc/silabs/silabs_siwx91x/siwg917/nwp_init.c Normal file
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@ -0,0 +1,60 @@
/**
* @file
* @brief Network Processor Initialization for SiWx91x.
*
* This file contains the initialization routine for the (ThreadArch) network processor
* on the SiWx91x platform. The component is responsible for setting up the necessary
* hardware and software components to enable network communication.
*
* Copyright (c) 2024 Silicon Laboratories Inc.
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/kernel.h>
#include "sl_wifi.h"
#include "sl_wifi_callback_framework.h"
static int siwg917_nwp_init(void)
{
sl_wifi_device_configuration_t network_config = {
.boot_option = LOAD_NWP_FW,
.band = SL_SI91X_WIFI_BAND_2_4GHZ,
.region_code = DEFAULT_REGION,
.boot_config = {
.oper_mode = SL_SI91X_CLIENT_MODE,
.tcp_ip_feature_bit_map = SL_SI91X_TCP_IP_FEAT_EXTENSION_VALID,
.ext_tcp_ip_feature_bit_map = SL_SI91X_CONFIG_FEAT_EXTENSION_VALID,
.config_feature_bit_map = SL_SI91X_ENABLE_ENHANCED_MAX_PSP,
.custom_feature_bit_map = SL_SI91X_CUSTOM_FEAT_EXTENSION_VALID,
/* Even if neither WiFi or BLE is used we have to specify a Coex mode */
.coex_mode = SL_SI91X_BLE_MODE,
.ext_custom_feature_bit_map =
MEMORY_CONFIG |
SL_SI91X_EXT_FEAT_XTAL_CLK |
SL_SI91X_EXT_FEAT_FRONT_END_SWITCH_PINS_ULP_GPIO_4_5_0,
}
};
/* TODO: If sl_net_*_profile() functions will be needed for WiFi then call
* sl_net_set_profile() here. Currently these are unused.
*/
return sl_wifi_init(&network_config, NULL, sl_wifi_default_event_handler);
}
SYS_INIT(siwg917_nwp_init, POST_KERNEL, CONFIG_KERNEL_INIT_PRIORITY_DEVICE);
/* IRQn 74 is used for communication with co-processor */
Z_ISR_DECLARE(74, 0, IRQ074_Handler, 0);
/* Co-processor will use value stored in IVT to store its stack.
*
* FIXME: We can't use Z_ISR_DECLARE() to declare this entry
* FIXME: Allow to configure size of buffer
*/
static uint8_t __aligned(8) siwg917_nwp_stack[10 * 1024];
static Z_DECL_ALIGN(struct _isr_list) Z_GENERIC_SECTION(.intList)
__used __isr_siwg917_coprocessor_stack_irq = {
.irq = 30,
.flags = ISR_FLAG_DIRECT,
.func = &siwg917_nwp_stack[sizeof(siwg917_nwp_stack) - 1],
};