arch: arm: mach-socfpga: Add Agilex7 M-series mach-socfgpa enablement

Add platform related files for new platform Agilex7 M-series.

Signed-off-by: Tingting Meng <tingting.meng@altera.com>
Signed-off-by: Alif Zakuan Yuslaimi <alif.zakuan.yuslaimi@altera.com>
Reviewed-by: Tien Fong Chee <tien.fong.chee@altera.com>

arch/arm/mach-socfpga/include/mach/misc.h

@@ -41,7 +41,8 @@ void socfpga_sdram_remap_zero(void);
 #endif
 
 #if defined(CONFIG_TARGET_SOCFPGA_STRATIX10) || \
-	defined(CONFIG_TARGET_SOCFPGA_AGILEX)
+	defined(CONFIG_TARGET_SOCFPGA_AGILEX) || \
+	defined(CONFIG_TARGET_SOCFPGA_AGILEX7M)
 int is_fpga_config_ready(void);
 #endif
 

arch/arm/mach-socfpga/spl_agilex7m.c

@@ -0,0 +1,106 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2025 Altera Corporation <www.altera.com>
+ */
+
+#include <hang.h>
+#include <image.h>
+#include <init.h>
+#include <log.h>
+#include <spl.h>
+#include <wdt.h>
+#include <asm/arch/clock_manager.h>
+#include <asm/arch/firewall.h>
+#include <asm/arch/mailbox_s10.h>
+#include <asm/arch/misc.h>
+#include <asm/arch/reset_manager.h>
+#include <asm/arch/system_manager.h>
+#include <asm/global_data.h>
+#include <asm/io.h>
+#include <asm/u-boot.h>
+#include <asm/utils.h>
+#include <dm/uclass.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+void board_init_f(ulong dummy)
+{
+	int ret;
+	struct udevice *dev;
+
+	/* Enable Async */
+	asm volatile("msr daifclr, #4");
+
+#ifdef CONFIG_XPL_BUILD
+	spl_save_restore_data();
+#endif
+
+	ret = spl_early_init();
+	if (ret)
+		hang();
+
+	socfpga_get_sys_mgr_addr();
+	socfpga_get_managers_addr();
+
+	/* Ensure watchdog is paused when debugging is happening */
+	writel(SYSMGR_WDDBG_PAUSE_ALL_CPU,
+	       socfpga_get_sysmgr_addr() + SYSMGR_SOC64_WDDBG);
+
+	/* ensure all processors are not released prior Linux boot */
+	writeq(0, CPU_RELEASE_ADDR);
+
+	timer_init();
+
+	mbox_init();
+
+	mbox_hps_stage_notify(HPS_EXECUTION_STATE_FSBL);
+
+	sysmgr_pinmux_init();
+
+	ret = uclass_get_device(UCLASS_CLK, 0, &dev);
+	if (ret) {
+		debug("Clock init failed: %d\n", ret);
+		hang();
+	}
+
+	/*
+	 * Enable watchdog as early as possible before initializing other
+	 * component. Watchdog need to be enabled after clock driver because
+	 * it will retrieve the clock frequency from clock driver.
+	 */
+	if (CONFIG_IS_ENABLED(WDT))
+		initr_watchdog();
+
+	preloader_console_init();
+	print_reset_info();
+	cm_print_clock_quick_summary();
+
+	ret = uclass_get_device_by_name(UCLASS_NOP, "socfpga-system-mgr-firewall", &dev);
+	if (ret) {
+		printf("System manager firewall configuration failed: %d\n", ret);
+		hang();
+	}
+
+	ret = uclass_get_device_by_name(UCLASS_NOP, "socfpga-l3interconnect-firewall", &dev);
+	if (ret) {
+		printf("L3 interconnect firewall configuration failed: %d\n", ret);
+		hang();
+	}
+
+	ret = uclass_get_device(UCLASS_CACHE, 0, &dev);
+	if (ret) {
+		debug("CCU init failed: %d\n", ret);
+		hang();
+	}
+
+	if (IS_ENABLED(CONFIG_SPL_ALTERA_SDRAM)) {
+		ret = uclass_get_device(UCLASS_RAM, 0, &dev);
+		if (ret) {
+			debug("DRAM init failed: %d\n", ret);
+			hang();
+		}
+	}
+
+	if (IS_ENABLED(CONFIG_CADENCE_QSPI))
+		mbox_qspi_open();
+}

board/intel/agilex7m-socdk/MAINTAINERS

@@ -4,6 +4,7 @@ M:	Alif Zakuan Yuslaimi <alif.zakuan.yuslaimi@altera.com>
 S:	Maintained
 F:	arch/arm/dts/socfpga_soc64_u-boot.dtsi
 F:	arch/arm/dts/socfpga_agilex7m*
+F:	arch/arm/mach-socfpga/spl_agilex7m.c
 F:	board/intel/agilex7m-socdk/
 F:	include/configs/socfpga_agilex7m_socdk.h
 F:	configs/socfpga_agilex7m_sdmmc_defconfig

board/intel/agilex7m-socdk/socfpga.c

@@ -0,0 +1,12 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2025 Altera Corporation <www.altera.com>
+ */
+
+#include <asm/arch/misc.h>
+
+int board_early_init_f(void)
+{
+	socfpga_get_sys_mgr_addr();
+	return 0;
+}