2 * (C) Copyright 2000-2003
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
27 * written or collected and sometimes rewritten by
28 * Magnus Damm <damm@bitsmart.com>
30 * minor modifications by
31 * Wolfgang Denk <wd@denx.de>
37 #include <asm/cache.h>
41 #if defined(CONFIG_440)
42 static int do_chip_reset( unsigned long sys0, unsigned long sys1 );
45 /* ------------------------------------------------------------------------- */
49 #if defined(CONFIG_405GP) || \
50 defined(CONFIG_405CR) || \
51 defined(CONFIG_405EP) || \
52 defined(CONFIG_440) || \
53 defined(CONFIG_IOP480)
56 #if defined(CONFIG_405GP) || \
57 defined(CONFIG_405CR) || \
58 defined(CONFIG_405EP) || \
59 defined(CONFIG_IOP480)
60 DECLARE_GLOBAL_DATA_PTR;
62 ulong clock = gd->cpu_clk;
66 #if defined(CONFIG_405GP) || defined(CONFIG_405CR) || defined(CONFIG_405EP)
67 PPC405_SYS_INFO sys_info;
71 get_sys_info(&sys_info);
74 puts ("AMCC PowerPC 405GP");
75 if (pvr == PVR_405GPR_RB) {
81 puts ("AMCC PowerPC 405CR Rev. ");
84 puts ("AMCC PowerPC 405EP Rev. ");
113 printf ("? (PVR=%08x)", pvr);
117 printf (" at %s MHz (PLB=%lu, OPB=%lu, EBC=%lu MHz)\n", strmhz(buf, clock),
118 sys_info.freqPLB / 1000000,
119 sys_info.freqPLB / sys_info.pllOpbDiv / 1000000,
120 sys_info.freqPLB / sys_info.pllExtBusDiv / 1000000);
122 #if defined(CONFIG_405GP)
123 if (mfdcr(strap) & PSR_PCI_ASYNC_EN) {
124 printf (" PCI async ext clock used, ");
126 printf (" PCI sync clock at %lu MHz, ",
127 sys_info.freqPLB / sys_info.pllPciDiv / 1000000);
129 printf ("%sternal PCI arbiter enabled\n",
130 (mfdcr(strap) & PSR_PCI_ARBIT_EN) ? "in" : "ex");
131 #elif defined(CONFIG_405EP)
132 printf (" IIC Boot EEPROM %sabled\n",
133 (mfdcr(cpc0_boot) & CPC0_BOOT_SEP) ? "en" : "dis");
134 printf (" PCI async ext clock used, ");
135 printf ("%sternal PCI arbiter enabled\n",
136 (mfdcr(cpc0_pci) & CPC0_PCI_ARBIT_EN) ? "in" : "ex");
139 #if defined(CONFIG_405EP)
140 printf (" 16 kB I-Cache 16 kB D-Cache");
142 printf (" 16 kB I-Cache %d kB D-Cache",
143 ((pvr | 0x00000001) == PVR_405GPR_RB) ? 16 : 8);
145 #endif /* defined(CONFIG_405GP) || defined(CONFIG_405CR) */
148 printf ("PLX IOP480 (PVR=%08x)", pvr);
149 printf (" at %s MHz:", strmhz(buf, clock));
150 printf (" %u kB I-Cache", 4);
151 printf (" %u kB D-Cache", 2);
154 #if defined(CONFIG_440)
155 puts ("AMCC PowerPC 440");
159 /* See errata 1.12: CHIP_4 */
160 if ((mfdcr(cpc0_sys0) != mfdcr(cpc0_strp0)) ||
161 (mfdcr(cpc0_sys1) != mfdcr(cpc0_strp1)) ){
162 puts ( "\n\t CPC0_SYSx DCRs corrupted. "
163 "Resetting chip ...\n");
164 udelay( 1000 * 1000 ); /* Give time for serial buf to clear */
165 do_chip_reset ( mfdcr(cpc0_strp0),
181 #if defined(CONFIG_440GR)
198 printf (" UNKNOWN (PVR=%08x)", pvr);
208 /* ------------------------------------------------------------------------- */
210 int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
212 #if defined(CONFIG_YOSEMITE) || defined(CONFIG_YELLOWSTONE)
213 /*give reset to BCSR*/
214 *(unsigned char*)(CFG_BCSR_BASE | 0x06) = 0x09;
219 * Initiate system reset in debug control register DBCR
221 __asm__ __volatile__("lis 3, 0x3000" ::: "r3");
222 #if defined(CONFIG_440)
223 __asm__ __volatile__("mtspr 0x134, 3");
225 __asm__ __volatile__("mtspr 0x3f2, 3");
228 #endif/* defined(CONFIG_YOSEMITE) || defined(CONFIG_YELLOWSTONE)*/
232 #if defined(CONFIG_440)
234 int do_chip_reset (unsigned long sys0, unsigned long sys1)
236 /* Changes to cpc0_sys0 and cpc0_sys1 require chip
239 mtdcr (cntrl0, mfdcr (cntrl0) | 0x80000000); /* Set SWE */
240 mtdcr (cpc0_sys0, sys0);
241 mtdcr (cpc0_sys1, sys1);
242 mtdcr (cntrl0, mfdcr (cntrl0) & ~0x80000000); /* Clr SWE */
243 mtspr (dbcr0, 0x20000000); /* Reset the chip */
251 * Get timebase clock frequency
253 unsigned long get_tbclk (void)
255 #if defined(CONFIG_440)
259 get_sys_info(&sys_info);
260 return (sys_info.freqProcessor);
262 #elif defined(CONFIG_405GP) || \
263 defined(CONFIG_405CR) || \
264 defined(CONFIG_405) || \
265 defined(CONFIG_405EP)
267 PPC405_SYS_INFO sys_info;
269 get_sys_info(&sys_info);
270 return (sys_info.freqProcessor);
272 #elif defined(CONFIG_IOP480)
278 # error get_tbclk() not implemented
285 #if defined(CONFIG_WATCHDOG)
289 int re_enable = disable_interrupts();
290 reset_4xx_watchdog();
291 if (re_enable) enable_interrupts();
295 reset_4xx_watchdog(void)
300 mtspr(tsr, 0x40000000);
302 #endif /* CONFIG_WATCHDOG */