From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- arch/arm/mach-bcm/board_bcm281xx.c | 63 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 arch/arm/mach-bcm/board_bcm281xx.c (limited to 'arch/arm/mach-bcm/board_bcm281xx.c') diff --git a/arch/arm/mach-bcm/board_bcm281xx.c b/arch/arm/mach-bcm/board_bcm281xx.c new file mode 100644 index 0000000000..91f6d633ee --- /dev/null +++ b/arch/arm/mach-bcm/board_bcm281xx.c @@ -0,0 +1,63 @@ +// SPDX-License-Identifier: GPL-2.0-only +// Copyright (C) 2012-2014 Broadcom Corporation + +#include +#include + +#include + +#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); + of_node_put(np_wdog); + 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) +{ + 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 -- cgit v1.2.3