From 677147c167ecbf4ac220a099b849cc7a5a03fec4 Mon Sep 17 00:00:00 2001 From: Alif Zakuan Yuslaimi Date: Sun, 3 Aug 2025 18:24:32 -0700 Subject: [PATCH] arm: socfpga: Update Agilex SPL data save and restore implementation Enable backup for data section to support warm reset in Agilex SPL as no SPL image would be reloaded in warm reset. Signed-off-by: Alif Zakuan Yuslaimi Reviewed-by: Tien Fong Chee --- arch/arm/mach-socfpga/spl_agilex.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/arch/arm/mach-socfpga/spl_agilex.c b/arch/arm/mach-socfpga/spl_agilex.c index faba0433838..698e76f45b2 100644 --- a/arch/arm/mach-socfpga/spl_agilex.c +++ b/arch/arm/mach-socfpga/spl_agilex.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2019 Intel Corporation + * Copyright (C) 2025 Altera Corporation * */ @@ -23,11 +24,29 @@ DECLARE_GLOBAL_DATA_PTR; +u32 reset_flag(void) +{ + /* Check rstmgr.stat for warm reset status */ + u32 status = readl(SOCFPGA_RSTMGR_ADDRESS); + + /* Check whether any L4 watchdogs or SDM had triggered warm reset */ + u32 warm_reset_mask = RSTMGR_L4WD_MPU_WARMRESET_MASK; + + if (status & warm_reset_mask) + return 0; + + return 1; +} + void board_init_f(ulong dummy) { int ret; struct udevice *dev; +#if defined(CONFIG_XPL_BUILD) && defined(CONFIG_SPL_RECOVER_DATA_SECTION) + spl_save_restore_data(); +#endif + ret = spl_early_init(); if (ret) hang(); -- 2.47.2