// SPDX-License-Identifier: GPL-2.0+ /* * board/renesas/spider/spider.c * This file is Spider board support. * * Copyright (C) 2021 Renesas Electronics Corp. */ #include #include #include #include #include #include #include #include #include DECLARE_GLOBAL_DATA_PTR; static void init_generic_timer(void) { const u32 freq = CONFIG_SYS_CLK_FREQ; /* Update memory mapped and register based freqency */ asm volatile ("msr cntfrq_el0, %0" :: "r" (freq)); writel(freq, CNTFID0); /* Enable counter */ setbits_le32(CNTCR_BASE, CNTCR_EN); } static void init_gic_v3(void) { /* GIC v3 power on */ writel(BIT(1), GICR_LPI_PWRR); /* Wait till the WAKER_CA_BIT changes to 0 */ clrbits_le32(GICR_LPI_WAKER, BIT(1)); while (readl(GICR_LPI_WAKER) & BIT(2)) ; writel(0xffffffff, GICR_SGI_BASE + GICR_IGROUPR0); } void s_init(void) { if (current_el() == 3) init_generic_timer(); } int board_early_init_f(void) { /* Unlock CPG access */ writel(0x5A5AFFFF, CPGWPR); writel(0xA5A50000, CPGWPCR); return 0; } int board_init(void) { if (current_el() == 3) init_gic_v3(); return 0; }