diff options
Diffstat (limited to 'cpu/mcf52x2/cpu.c')
| -rw-r--r-- | cpu/mcf52x2/cpu.c | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/cpu/mcf52x2/cpu.c b/cpu/mcf52x2/cpu.c new file mode 100644 index 000000000..b01222279 --- /dev/null +++ b/cpu/mcf52x2/cpu.c @@ -0,0 +1,123 @@ +/* + * (C) Copyright 2003 + * Josef Baumgartner <josef.baumgartner@telex.de> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <watchdog.h> +#include <command.h> + +#ifdef CONFIG_M5272 +#include <asm/immap_5272.h> +#include <asm/m5272.h> +#endif + +#ifdef CONFIG_M5282 + +#endif + + +#ifdef CONFIG_M5272 +int do_reset (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[]) { + volatile wdog_t * wdp = (wdog_t *)(CFG_MBAR + MCFSIM_WRRR); + + wdp->wdog_wrrr = 0; + udelay (1000); + + /* enable watchdog, set timeout to 0 and wait */ + wdp->wdog_wrrr = 1; + while (1); + + /* we don't return! */ + return 0; +}; + +int checkcpu(void) { + ulong *dirp = (ulong *)(CFG_MBAR + MCFSIM_DIR); + uchar msk; + char *suf; + + puts ("CPU: "); + msk = (*dirp > 28) & 0xf; + switch (msk) { + case 0x2: suf = "1K75N"; break; + case 0x4: suf = "3K75N"; break; + default: + suf = NULL; + printf ("MOTOROLA MCF5272 (Mask:%01x)\n", msk); + break; + } + + if (suf) + printf ("MOTOROLA MCF5272 %s\n", suf); + return 0; +}; + + +#if defined(CONFIG_WATCHDOG) +/* Called by macro WATCHDOG_RESET */ +void watchdog_reset (void) +{ + volatile immap_t * regp = (volatile immap_t *)CFG_MBAR; + regp->wdog_reg.wdog_wcr = 0; +} + +int watchdog_disable (void) +{ + volatile immap_t *regp = (volatile immap_t *)CFG_MBAR; + + regp->wdog_reg.wdog_wcr = 0; /* reset watchdog counter */ + regp->wdog_reg.wdog_wirr = 0; /* disable watchdog interrupt */ + regp->wdog_reg.wdog_wrrr = 0; /* disable watchdog timer */ + + puts ("WATCHDOG:disabled\n"); + return (0); +} + +int watchdog_init (void) +{ + volatile immap_t *regp = (volatile immap_t *)CFG_MBAR; + + regp->wdog_reg.wdog_wirr = 0; /* disable watchdog interrupt */ + + /* set timeout and enable watchdog */ + regp->wdog_reg.wdog_wrrr = ((CONFIG_WATCHDOG_TIMEOUT * CFG_HZ) / (32768 * 1000)) - 1; + regp->wdog_reg.wdog_wcr = 0; /* reset watchdog counter */ + + puts ("WATCHDOG:enabled\n"); + return (0); +} +#endif /* #ifdef CONFIG_WATCHDOG */ + +#endif /* #ifdef CONFIG_M5272 */ + + +#ifdef CONFIG_M5282 +int checkcpu (void) +{ + puts ("CPU: MOTOROLA Coldfire MCF5282\n"); + return 0; +} + +int do_reset (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[]) { + return 0; +}; +#endif |