diff options
Diffstat (limited to 'cpu/mcf52x2/cpu.c')
| -rw-r--r-- | cpu/mcf52x2/cpu.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/cpu/mcf52x2/cpu.c b/cpu/mcf52x2/cpu.c index 71ea408aa..d5d3d339c 100644 --- a/cpu/mcf52x2/cpu.c +++ b/cpu/mcf52x2/cpu.c @@ -6,6 +6,9 @@ * (C) Copyright 2005 * BuS Elektronik GmbH & Co. KG <esw@bus-elektronik.de> * + * MCF5275 additions + * Copyright (C) 2008 Arthur Shipkowski (art@videon-central.com) + * * See file CREDITS for list of people who contributed to this * project. * @@ -180,6 +183,69 @@ int watchdog_init(void) #endif /* #ifdef CONFIG_M5272 */ +#ifdef CONFIG_M5275 +int do_reset(cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[]) +{ + volatile rcm_t *rcm = (rcm_t *)(MMAP_RCM); + + udelay(1000); + + rcm->rcr = RCM_RCR_SOFTRST; + + /* we don't return! */ + return 0; +}; + +int checkcpu(void) +{ + char buf[32]; + + printf("CPU: Freescale Coldfire MCF5275 at %s MHz\n", + strmhz(buf, CFG_CLK)); + return 0; +}; + + +#if defined(CONFIG_WATCHDOG) +/* Called by macro WATCHDOG_RESET */ +void watchdog_reset(void) +{ + volatile wdog_t *wdt = (volatile wdog_t *)(MMAP_WDOG); + wdt->wsr = 0x5555; + wdt->wsr = 0xAAAA; +} + +int watchdog_disable(void) +{ + volatile wdog_t *wdt = (volatile wdog_t *)(MMAP_WDOG); + + wdt->wsr = 0x5555; /* reset watchdog counter */ + wdt->wsr = 0xAAAA; + wdt->wcr = 0; /* disable watchdog timer */ + + puts("WATCHDOG:disabled\n"); + return (0); +} + +int watchdog_init(void) +{ + volatile wdog_t *wdt = (volatile wdog_t *)(MMAP_WDOG); + + wdt->wcr = 0; /* disable watchdog */ + + /* set timeout and enable watchdog */ + wdt->wmr = + ((CONFIG_WATCHDOG_TIMEOUT * CFG_HZ) / (32768 * 1000)) - 1; + wdt->wsr = 0x5555; /* reset watchdog counter */ + wdt->wsr = 0xAAAA; + + puts("WATCHDOG:enabled\n"); + return (0); +} +#endif /* #ifdef CONFIG_WATCHDOG */ + +#endif /* #ifdef CONFIG_M5275 */ + #ifdef CONFIG_M5282 int checkcpu(void) { |