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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 | /* * (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_M5249 #include <asm/m5249.h> #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 #ifdef CONFIG_M5249 /* test-only: todo... */ int checkcpu (void) { char buf[32]; printf ("CPU: MOTOROLA Coldfire MCF5249 at %s MHz\n", strmhz(buf, CFG_CLK)); return 0; } int do_reset (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[]) { /* enable watchdog, set timeout to 0 and wait */ mbar_writeByte(MCFSIM_SYPCR, 0xc0); while (1); /* we don't return! */ return 0; }; #endif |