diff options
| author | Markus Mayer <markus.mayer@linaro.org> | 2014-02-25 14:17:44 -0800 |
|---|---|---|
| committer | Matt Porter <mporter@linaro.org> | 2014-03-06 03:17:59 -0500 |
| commit | a21ea269b99e6b627c86c29fb1b45b859e3840b6 (patch) | |
| tree | fdb3c17d0b0745e631032f780fdaa1ff41cecf58 /arch/arm/mach-bcm/board_bcm281xx.c | |
| parent | 8b1c342629ecf7c2c52600dbe626d74cffc8d6cc (diff) | |
| download | linux-a21ea269b99e6b627c86c29fb1b45b859e3840b6.tar.bz2 | |
ARM: bcm281xx: Consolidate reboot code
Consolidate reboot code and remove unnecessary functions.
Signed-off-by: Markus Mayer <markus.mayer@linaro.org>
Signed-off-by: Matt Porter <mporter@linaro.org>
Diffstat (limited to 'arch/arm/mach-bcm/board_bcm281xx.c')
| -rw-r--r-- | arch/arm/mach-bcm/board_bcm281xx.c | 46 |
1 files changed, 34 insertions, 12 deletions
diff --git a/arch/arm/mach-bcm/board_bcm281xx.c b/arch/arm/mach-bcm/board_bcm281xx.c index 5494e9146761..d7fa3aef6213 100644 --- a/arch/arm/mach-bcm/board_bcm281xx.c +++ b/arch/arm/mach-bcm/board_bcm281xx.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2012-2013 Broadcom Corporation + * 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 @@ -19,25 +19,47 @@ #include "kona.h" -static void bcm_board_setup_restart(void) +#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) { - struct device_node *np; + uint32_t val; + void __iomem *base; + struct device_node *np_wdog; - np = of_find_compatible_node(NULL, NULL, "brcm,bcm11351"); - if (np) { - if (of_device_is_available(np)) - bcm_kona_setup_restart(); - of_node_put(np); + 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; } - /* Restart setup for other boards goes here */ + + /* 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 board_init(void) { of_platform_populate(NULL, of_default_bus_match_table, NULL, &platform_bus); - - bcm_board_setup_restart(); kona_l2_cache_init(); } @@ -48,6 +70,6 @@ static const char * const bcm281xx_dt_compat[] = { DT_MACHINE_START(BCM281XX_DT, "BCM281xx Broadcom Application Processor") .init_machine = board_init, - .restart = bcm_kona_restart, + .restart = bcm281xx_restart, .dt_compat = bcm281xx_dt_compat, MACHINE_END |