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>
33 DECLARE_GLOBAL_DATA_PTR;
36 static void config_8560_ioports (volatile immap_t * immr)
40 for (portnum = 0; portnum < 4; portnum++) {
47 iop_conf_t *iopc = (iop_conf_t *) & iop_conf_tab[portnum][0];
48 iop_conf_t *eiopc = iopc + 32;
53 * index 0 refers to pin 31,
54 * index 31 refers to pin 0
56 while (iopc < eiopc) {
76 volatile ioport_t *iop = ioport_addr (immr, portnum);
80 * the (somewhat confused) paragraph at the
81 * bottom of page 35-5 warns that there might
82 * be "unknown behaviour" when programming
83 * PSORx and PDIRx, if PPARx = 1, so I
84 * decided this meant I had to disable the
85 * dedicated function first, and enable it
89 iop->psor = (iop->psor & tpmsk) | psor;
90 iop->podr = (iop->podr & tpmsk) | podr;
91 iop->pdat = (iop->pdat & tpmsk) | pdat;
92 iop->pdir = (iop->pdir & tpmsk) | pdir;
100 * Breathe some life into the CPU...
102 * Set up the memory map
103 * initialize a bunch of registers
106 void cpu_init_f (void)
108 volatile immap_t *immap = (immap_t *)CFG_IMMR;
109 volatile ccsr_lbc_t *memctl = &immap->im_lbc;
110 extern void m8560_cpm_reset (void);
112 /* Pointer is writable since we allocated a register for it */
113 gd = (gd_t *) (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET);
115 /* Clear initial global data */
116 memset ((void *) gd, 0, sizeof (gd_t));
120 config_8560_ioports(immap);
123 /* Map banks 0 and 1 to the FLASH banks 0 and 1 at preliminary
124 * addresses - these have to be modified later when FLASH size
125 * has been determined
127 #if defined(CFG_OR0_REMAP)
128 memctl->or0 = CFG_OR0_REMAP;
130 #if defined(CFG_OR1_REMAP)
131 memctl->or1 = CFG_OR1_REMAP;
134 /* now restrict to preliminary range */
135 #if defined(CFG_BR0_PRELIM) && defined(CFG_OR0_PRELIM)
136 memctl->br0 = CFG_BR0_PRELIM;
137 memctl->or0 = CFG_OR0_PRELIM;
140 #if defined(CFG_BR1_PRELIM) && defined(CFG_OR1_PRELIM)
141 memctl->or1 = CFG_OR1_PRELIM;
142 memctl->br1 = CFG_BR1_PRELIM;
145 #if !defined(CONFIG_MPC85xx)
146 #if defined(CFG_BR2_PRELIM) && defined(CFG_OR2_PRELIM)
147 memctl->or2 = CFG_OR2_PRELIM;
148 memctl->br2 = CFG_BR2_PRELIM;
152 #if defined(CFG_BR3_PRELIM) && defined(CFG_OR3_PRELIM)
153 memctl->or3 = CFG_OR3_PRELIM;
154 memctl->br3 = CFG_BR3_PRELIM;
157 #if defined(CFG_BR4_PRELIM) && defined(CFG_OR4_PRELIM)
158 memctl->or4 = CFG_OR4_PRELIM;
159 memctl->br4 = CFG_BR4_PRELIM;
162 #if defined(CFG_BR5_PRELIM) && defined(CFG_OR5_PRELIM)
163 memctl->or5 = CFG_OR5_PRELIM;
164 memctl->br5 = CFG_BR5_PRELIM;
167 #if defined(CFG_BR6_PRELIM) && defined(CFG_OR6_PRELIM)
168 memctl->or6 = CFG_OR6_PRELIM;
169 memctl->br6 = CFG_BR6_PRELIM;
172 #if defined(CFG_BR7_PRELIM) && defined(CFG_OR7_PRELIM)
173 memctl->or7 = CFG_OR7_PRELIM;
174 memctl->br7 = CFG_BR7_PRELIM;
177 #if defined(CONFIG_CPM2)
184 * Initialize L2 as cache.
186 * The newer 8548, etc, parts have twice as much cache, but
187 * use the same bit-encoding as the older 8555, etc, parts.
189 * FIXME: Use PVR_VER(pvr) == 1 test here instead of SVR_VER()?
194 #if defined(CONFIG_L2_CACHE)
195 volatile immap_t *immap = (immap_t *)CFG_IMMR;
196 volatile ccsr_l2cache_t *l2cache = &immap->im_l2cache;
197 volatile uint cache_ctl;
204 cache_ctl = l2cache->l2ctl;
206 switch (cache_ctl & 0x30000000) {
208 if (ver == SVR_8548 || ver == SVR_8548_E) {
209 printf ("L2 cache 512KB:");
211 printf ("L2 cache 256KB:");
218 printf ("L2 cache unknown size (0x%08x)\n", cache_ctl);
223 l2cache->l2ctl = 0x68000000; /* invalidate */
224 cache_ctl = l2cache->l2ctl;
227 l2cache->l2ctl = 0xa8000000; /* enable 256KB L2 cache */
228 cache_ctl = l2cache->l2ctl;
231 printf(" enabled\n");
233 printf("L2 cache: disabled\n");