projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 8ac49e04 | 1 | /* |
| a21ea269 | 2 | * Copyright (C) 2012-2014 Broadcom Corporation |
| 8ac49e04 CD |
3 | * |
| 4 | * This program is free software; you can redistribute it and/or | |
| 5 | * modify it under the terms of the GNU General Public License as | |
| 6 | * published by the Free Software Foundation version 2. | |
| 7 | * | |
| 8 | * This program is distributed "as is" WITHOUT ANY WARRANTY of any | |
| 9 | * kind, whether express or implied; without even the implied warranty | |
| 10 | * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 11 | * GNU General Public License for more details. | |
| 12 | */ | |
| 13 | ||
| 8011657b | 14 | #include <linux/clocksource.h> |
| 389df036 MM |
15 | #include <linux/of_address.h> |
| 16 | #include <linux/of_platform.h> | |
| 8ac49e04 CD |
17 | |
| 18 | #include <asm/mach/arch.h> | |
| 8ac49e04 | 19 | |
| eeda4cb9 | 20 | #include "kona_l2_cache.h" |
| b8eb35fd | 21 | |
| a21ea269 MM |
22 | #define SECWDOG_OFFSET 0x00000000 |
| 23 | #define SECWDOG_RESERVED_MASK 0xe2000000 | |
| 24 | #define SECWDOG_WD_LOAD_FLAG_MASK 0x10000000 | |
| 25 | #define SECWDOG_EN_MASK 0x08000000 | |
| 26 | #define SECWDOG_SRSTEN_MASK 0x04000000 | |
| 27 | #define SECWDOG_CLKS_SHIFT 20 | |
| 28 | #define SECWDOG_COUNT_SHIFT 0 | |
| 29 | ||
| 30 | static void bcm281xx_restart(enum reboot_mode mode, const char *cmd) | |
| 257b49e3 | 31 | { |
| a21ea269 MM |
32 | uint32_t val; |
| 33 | void __iomem *base; | |
| 34 | struct device_node *np_wdog; | |
| 257b49e3 | 35 | |
| a21ea269 MM |
36 | np_wdog = of_find_compatible_node(NULL, NULL, "brcm,kona-wdt"); |
| 37 | if (!np_wdog) { | |
| 38 | pr_emerg("Couldn't find brcm,kona-wdt\n"); | |
| 39 | return; | |
| 40 | } | |
| 41 | base = of_iomap(np_wdog, 0); | |
| 42 | if (!base) { | |
| 43 | pr_emerg("Couldn't map brcm,kona-wdt\n"); | |
| 44 | return; | |
| 257b49e3 | 45 | } |
| a21ea269 MM |
46 | |
| 47 | /* Enable watchdog with short timeout (244us). */ | |
| 48 | val = readl(base + SECWDOG_OFFSET); | |
| 49 | val &= SECWDOG_RESERVED_MASK | SECWDOG_WD_LOAD_FLAG_MASK; | |
| 50 | val |= SECWDOG_EN_MASK | SECWDOG_SRSTEN_MASK | | |
| 51 | (0x15 << SECWDOG_CLKS_SHIFT) | | |
| 52 | (0x8 << SECWDOG_COUNT_SHIFT); | |
| 53 | writel(val, base + SECWDOG_OFFSET); | |
| 54 | ||
| 55 | /* Wait for reset */ | |
| 56 | while (1); | |
| 257b49e3 MM |
57 | } |
| 58 | ||
| 0e8b860a | 59 | static void __init bcm281xx_init(void) |
| 8ac49e04 | 60 | { |
| d2168146 | 61 | of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); |
| b8eb35fd | 62 | kona_l2_cache_init(); |
| 8ac49e04 CD |
63 | } |
| 64 | ||
| 9c6423aa AE |
65 | static const char * const bcm281xx_dt_compat[] = { |
| 66 | "brcm,bcm11351", /* Have to use the first number upstreamed */ | |
| 67 | NULL, | |
| 68 | }; | |
| 8ac49e04 | 69 | |
| 9c6423aa | 70 | DT_MACHINE_START(BCM281XX_DT, "BCM281xx Broadcom Application Processor") |
| 0e8b860a | 71 | .init_machine = bcm281xx_init, |
| a21ea269 | 72 | .restart = bcm281xx_restart, |
| 9c6423aa | 73 | .dt_compat = bcm281xx_dt_compat, |
| 8ac49e04 | 74 | MACHINE_END |