2 * (C) Copyright 2003 Motorola Inc.
3 * Modified by Xianghua Xiao, X.Xiao@motorola.com
6 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
8 * See file CREDITS for list of people who contributed to this
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
29 #include <asm/processor.h>
34 static void config_8560_ioports (volatile immap_t * immr)
38 for (portnum = 0; portnum < 4; portnum++) {
45 iop_conf_t *iopc = (iop_conf_t *) & iop_conf_tab[portnum][0];
46 iop_conf_t *eiopc = iopc + 32;
51 * index 0 refers to pin 31,
52 * index 31 refers to pin 0
54 while (iopc < eiopc) {
74 volatile ioport_t *iop = ioport_addr (immr, portnum);
78 * the (somewhat confused) paragraph at the
79 * bottom of page 35-5 warns that there might
80 * be "unknown behaviour" when programming
81 * PSORx and PDIRx, if PPARx = 1, so I
82 * decided this meant I had to disable the
83 * dedicated function first, and enable it
87 iop->psor = (iop->psor & tpmsk) | psor;
88 iop->podr = (iop->podr & tpmsk) | podr;
89 iop->pdat = (iop->pdat & tpmsk) | pdat;
90 iop->pdir = (iop->pdir & tpmsk) | pdir;
98 * Breathe some life into the CPU...
100 * Set up the memory map
101 * initialize a bunch of registers
104 void cpu_init_f (void)
106 DECLARE_GLOBAL_DATA_PTR;
107 volatile immap_t *immap = (immap_t *)CFG_IMMR;
108 volatile ccsr_lbc_t *memctl = &immap->im_lbc;
109 extern void m8560_cpm_reset (void);
111 /* Pointer is writable since we allocated a register for it */
112 gd = (gd_t *) (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET);
114 /* Clear initial global data */
115 memset ((void *) gd, 0, sizeof (gd_t));
118 #ifdef CONFIG_MPC8560
119 config_8560_ioports(immap);
122 /* Map banks 0 and 1 to the FLASH banks 0 and 1 at preliminary
123 * addresses - these have to be modified later when FLASH size
124 * has been determined
126 #if defined(CFG_OR0_REMAP)
127 memctl->or0 = CFG_OR0_REMAP;
129 #if defined(CFG_OR1_REMAP)
130 memctl->or1 = CFG_OR1_REMAP;
133 /* now restrict to preliminary range */
134 #if defined(CFG_BR0_PRELIM) && defined(CFG_OR0_PRELIM)
135 memctl->br0 = CFG_BR0_PRELIM;
136 memctl->or0 = CFG_OR0_PRELIM;
139 #if defined(CFG_BR1_PRELIM) && defined(CFG_OR1_PRELIM)
140 memctl->or1 = CFG_OR1_PRELIM;
141 memctl->br1 = CFG_BR1_PRELIM;
144 #if !defined(CONFIG_MPC85xx)
145 #if defined(CFG_BR2_PRELIM) && defined(CFG_OR2_PRELIM)
146 memctl->or2 = CFG_OR2_PRELIM;
147 memctl->br2 = CFG_BR2_PRELIM;
151 #if defined(CFG_BR3_PRELIM) && defined(CFG_OR3_PRELIM)
152 memctl->or3 = CFG_OR3_PRELIM;
153 memctl->br3 = CFG_BR3_PRELIM;
156 #if defined(CFG_BR4_PRELIM) && defined(CFG_OR4_PRELIM)
157 memctl->or4 = CFG_OR4_PRELIM;
158 memctl->br4 = CFG_BR4_PRELIM;
161 #if defined(CFG_BR5_PRELIM) && defined(CFG_OR5_PRELIM)
162 memctl->or5 = CFG_OR5_PRELIM;
163 memctl->br5 = CFG_BR5_PRELIM;
166 #if defined(CFG_BR6_PRELIM) && defined(CFG_OR6_PRELIM)
167 memctl->or6 = CFG_OR6_PRELIM;
168 memctl->br6 = CFG_BR6_PRELIM;
171 #if defined(CFG_BR7_PRELIM) && defined(CFG_OR7_PRELIM)
172 memctl->or7 = CFG_OR7_PRELIM;
173 memctl->br7 = CFG_BR7_PRELIM;
176 #if defined(CONFIG_MPC8560)
182 * We initialize L2 as cache here.
184 int cpu_init_r (void)
186 #if defined(CONFIG_L2_CACHE)
187 volatile immap_t *immap = (immap_t *)CFG_IMMR;
188 volatile ccsr_l2cache_t *l2cache = &immap->im_l2cache;
192 l2cache->l2ctl = 0x68000000; /* invalidate */
193 temp = l2cache->l2ctl;
195 l2cache->l2ctl = 0xa8000000; /* enable 256KB L2 cache */
196 temp = l2cache->l2ctl;
199 printf("L2 cache enabled: 256KB\n");
201 printf("L2 cache disabled.\n");