board_bcm281xx.rar_The First

/* * Copyright (C) 2012-2014 Broadcom Corporation * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation version 2. * * This program is distributed "as is" WITHOUT ANY WARRANTY of any * kind, whether express or implied; without even the implied warranty * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include <linux/clocksource.h> #include <linux/of_address.h> #include <linux/of_platform.h> #include <asm/mach/arch.h> #include "kona_l2_cache.h" #define SECWDOG_OFFSET 0x00000000 #define SECWDOG_RESERVED_MASK 0xe2000000 #define SECWDOG_WD_LOAD_FLAG_MASK 0x10000000 #define SECWDOG_EN_MASK 0x08000000 #define SECWDOG_SRSTEN_MASK 0x04000000 #define SECWDOG_CLKS_SHIFT 20 #define SECWDOG_COUNT_SHIFT 0 static void bcm281xx_restart(enum reboot_mode mode, const char *cmd) { uint32_t val; void __iomem *base; struct device_node *np_wdog; np_wdog = of_find_compatible_node(NULL, NULL, "brcm,kona-wdt"); if (!np_wdog) { pr_emerg("Couldn't find brcm,kona-wdt\n"); return; } base = of_iomap(np_wdog, 0); if (!base) { pr_emerg("Couldn't map brcm,kona-wdt\n"); return; } /* Enable watchdog with short timeout (244us). */ val = readl(base + SECWDOG_OFFSET); val &= SECWDOG_RESERVED_MASK | SECWDOG_WD_LOAD_FLAG_MASK; val |= SECWDOG_EN_MASK | SECWDOG_SRSTEN_MASK | (0x15 << SECWDOG_CLKS_SHIFT) | (0x8 << SECWDOG_COUNT_SHIFT); writel(val, base + SECWDOG_OFFSET); /* Wait for reset */ while (1); } static void __init bcm281xx_init(void) { of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); kona_l2_cache_init(); } static const char * const bcm281xx_dt_compat[] = { "brcm,bcm11351", /* Have to use the first number upstreamed */ NULL, }; DT_MACHINE_START(BCM281XX_DT, "BCM281xx Broadcom Application Processor") .init_machine = bcm281xx_init, .restart = bcm281xx_restart, .dt_compat = bcm281xx_dt_compat, MACHINE_END