3 * Josef Baumgartner <josef.baumgartner@telex.de>
7 * BuS Elektronik GmbH & Co. KG <esw@bus-elektronik.de>
9 * See file CREDITS for list of people who contributed to this
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License as
14 * published by the Free Software Foundation; either version 2 of
15 * the License, or (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
33 #include <asm/immap_5271.h>
34 #include <asm/m5271.h>
38 #include <asm/immap_5272.h>
39 #include <asm/m5272.h>
43 #include <asm/m5282.h>
44 #include <asm/immap_5282.h>
48 #include <asm/m5249.h>
56 printf ("CPU: Freescale Coldfire MCF5271 at %s MHz\n", strmhz(buf, CFG_CLK));
60 int do_reset (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[]) {
61 mbar_writeByte(MCF_RCM_RCR,
62 MCF_RCM_RCR_SOFTRST | MCF_RCM_RCR_FRCRSTOUT);
66 #if defined(CONFIG_WATCHDOG)
67 void watchdog_reset (void)
69 mbar_writeShort(MCF_WTM_WSR, 0x5555);
70 mbar_writeShort(MCF_WTM_WSR, 0xAAAA);
73 int watchdog_disable (void)
75 mbar_writeShort(MCF_WTM_WCR, 0);
79 int watchdog_init (void)
81 mbar_writeShort(MCF_WTM_WCR, MCF_WTM_WCR_EN);
84 #endif /* #ifdef CONFIG_WATCHDOG */
89 int do_reset (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[]) {
90 volatile wdog_t * wdp = (wdog_t *)(CFG_MBAR + MCFSIM_WRRR);
95 /* enable watchdog, set timeout to 0 and wait */
99 /* we don't return! */
104 ulong *dirp = (ulong *)(CFG_MBAR + MCFSIM_DIR);
109 msk = (*dirp > 28) & 0xf;
111 case 0x2: suf = "1K75N"; break;
112 case 0x4: suf = "3K75N"; break;
115 printf ("Freescale MCF5272 (Mask:%01x)\n", msk);
120 printf ("Freescale MCF5272 %s\n", suf);
124 #if defined(CONFIG_WATCHDOG)
125 /* Called by macro WATCHDOG_RESET */
126 void watchdog_reset (void)
128 volatile immap_t * regp = (volatile immap_t *)CFG_MBAR;
129 regp->wdog_reg.wdog_wcr = 0;
132 int watchdog_disable (void)
134 volatile immap_t *regp = (volatile immap_t *)CFG_MBAR;
136 regp->wdog_reg.wdog_wcr = 0; /* reset watchdog counter */
137 regp->wdog_reg.wdog_wirr = 0; /* disable watchdog interrupt */
138 regp->wdog_reg.wdog_wrrr = 0; /* disable watchdog timer */
140 puts ("WATCHDOG:disabled\n");
144 int watchdog_init (void)
146 volatile immap_t *regp = (volatile immap_t *)CFG_MBAR;
148 regp->wdog_reg.wdog_wirr = 0; /* disable watchdog interrupt */
150 /* set timeout and enable watchdog */
151 regp->wdog_reg.wdog_wrrr = ((CONFIG_WATCHDOG_TIMEOUT * CFG_HZ) / (32768 * 1000)) - 1;
152 regp->wdog_reg.wdog_wcr = 0; /* reset watchdog counter */
154 puts ("WATCHDOG:enabled\n");
157 #endif /* #ifdef CONFIG_WATCHDOG */
159 #endif /* #ifdef CONFIG_M5272 */
165 unsigned char resetsource = MCFRESET_RSR;
167 printf ("CPU: Freescale Coldfire MCF5282 (PIN: %2.2x REV: %2.2x)\n",
168 MCFCCM_CIR>>8,MCFCCM_CIR & MCFCCM_CIR_PRN_MASK);
169 printf ("Reset:%s%s%s%s%s%s%s\n",
170 (resetsource & MCFRESET_RSR_LOL) ? " Loss of Lock" : "",
171 (resetsource & MCFRESET_RSR_LOC) ? " Loss of Clock" : "",
172 (resetsource & MCFRESET_RSR_EXT) ? " External" : "",
173 (resetsource & MCFRESET_RSR_POR) ? " Power On" : "",
174 (resetsource & MCFRESET_RSR_WDR) ? " Watchdog" : "",
175 (resetsource & MCFRESET_RSR_SOFT) ? " Software" : "",
176 (resetsource & MCFRESET_RSR_LVD) ? " Low Voltage" : ""
181 int do_reset (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[])
183 MCFRESET_RCR = MCFRESET_RCR_SOFTRST;
188 #ifdef CONFIG_M5249 /* test-only: todo... */
193 printf ("CPU: Freescale Coldfire MCF5249 at %s MHz\n", strmhz(buf, CFG_CLK));
197 int do_reset (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[]) {
198 /* enable watchdog, set timeout to 0 and wait */
199 mbar_writeByte(MCFSIM_SYPCR, 0xc0);
202 /* we don't return! */