2 * Copyright 2007 Freescale Semiconductor.
4 * (C) Copyright 2003 Motorola Inc.
10 * See file CREDITS for list of people who contributed to this
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License as
15 * published by the Free Software Foundation; either version 2 of
16 * the License, or (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
31 #include <asm/processor.h>
35 DECLARE_GLOBAL_DATA_PTR;
38 extern qe_iop_conf_t qe_iop_conf_tab[];
39 extern void qe_config_iopin(u8 port, u8 pin, int dir,
40 int open_drain, int assign);
41 extern void qe_init(uint qe_base);
42 extern void qe_reset(void);
44 static void config_qe_ioports(void)
47 int dir, open_drain, assign;
50 for (i = 0; qe_iop_conf_tab[i].assign != QE_IOP_TAB_END; i++) {
51 port = qe_iop_conf_tab[i].port;
52 pin = qe_iop_conf_tab[i].pin;
53 dir = qe_iop_conf_tab[i].dir;
54 open_drain = qe_iop_conf_tab[i].open_drain;
55 assign = qe_iop_conf_tab[i].assign;
56 qe_config_iopin(port, pin, dir, open_drain, assign);
62 static void config_8560_ioports (volatile immap_t * immr)
66 for (portnum = 0; portnum < 4; portnum++) {
73 iop_conf_t *iopc = (iop_conf_t *) & iop_conf_tab[portnum][0];
74 iop_conf_t *eiopc = iopc + 32;
79 * index 0 refers to pin 31,
80 * index 31 refers to pin 0
82 while (iopc < eiopc) {
102 volatile ioport_t *iop = ioport_addr (immr, portnum);
106 * the (somewhat confused) paragraph at the
107 * bottom of page 35-5 warns that there might
108 * be "unknown behaviour" when programming
109 * PSORx and PDIRx, if PPARx = 1, so I
110 * decided this meant I had to disable the
111 * dedicated function first, and enable it
115 iop->psor = (iop->psor & tpmsk) | psor;
116 iop->podr = (iop->podr & tpmsk) | podr;
117 iop->pdat = (iop->pdat & tpmsk) | pdat;
118 iop->pdir = (iop->pdir & tpmsk) | pdir;
126 * Breathe some life into the CPU...
128 * Set up the memory map
129 * initialize a bunch of registers
132 void cpu_init_f (void)
134 volatile immap_t *immap = (immap_t *)CFG_IMMR;
135 volatile ccsr_lbc_t *memctl = &immap->im_lbc;
136 extern void m8560_cpm_reset (void);
138 /* Pointer is writable since we allocated a register for it */
139 gd = (gd_t *) (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET);
141 /* Clear initial global data */
142 memset ((void *) gd, 0, sizeof (gd_t));
146 config_8560_ioports(immap);
149 /* Map banks 0 and 1 to the FLASH banks 0 and 1 at preliminary
150 * addresses - these have to be modified later when FLASH size
151 * has been determined
153 #if defined(CFG_OR0_REMAP)
154 memctl->or0 = CFG_OR0_REMAP;
156 #if defined(CFG_OR1_REMAP)
157 memctl->or1 = CFG_OR1_REMAP;
160 /* now restrict to preliminary range */
161 /* if cs1 is already set via debugger, leave cs0/cs1 alone */
162 if (! memctl->br1 & 1) {
163 #if defined(CFG_BR0_PRELIM) && defined(CFG_OR0_PRELIM)
164 memctl->br0 = CFG_BR0_PRELIM;
165 memctl->or0 = CFG_OR0_PRELIM;
168 #if defined(CFG_BR1_PRELIM) && defined(CFG_OR1_PRELIM)
169 memctl->or1 = CFG_OR1_PRELIM;
170 memctl->br1 = CFG_BR1_PRELIM;
174 #if defined(CFG_BR2_PRELIM) && defined(CFG_OR2_PRELIM)
175 memctl->or2 = CFG_OR2_PRELIM;
176 memctl->br2 = CFG_BR2_PRELIM;
179 #if defined(CFG_BR3_PRELIM) && defined(CFG_OR3_PRELIM)
180 memctl->or3 = CFG_OR3_PRELIM;
181 memctl->br3 = CFG_BR3_PRELIM;
184 #if defined(CFG_BR4_PRELIM) && defined(CFG_OR4_PRELIM)
185 memctl->or4 = CFG_OR4_PRELIM;
186 memctl->br4 = CFG_BR4_PRELIM;
189 #if defined(CFG_BR5_PRELIM) && defined(CFG_OR5_PRELIM)
190 memctl->or5 = CFG_OR5_PRELIM;
191 memctl->br5 = CFG_BR5_PRELIM;
194 #if defined(CFG_BR6_PRELIM) && defined(CFG_OR6_PRELIM)
195 memctl->or6 = CFG_OR6_PRELIM;
196 memctl->br6 = CFG_BR6_PRELIM;
199 #if defined(CFG_BR7_PRELIM) && defined(CFG_OR7_PRELIM)
200 memctl->or7 = CFG_OR7_PRELIM;
201 memctl->br7 = CFG_BR7_PRELIM;
204 #if defined(CONFIG_CPM2)
208 /* Config QE ioports */
216 * Initialize L2 as cache.
218 * The newer 8548, etc, parts have twice as much cache, but
219 * use the same bit-encoding as the older 8555, etc, parts.
225 #if defined(CONFIG_CLEAR_LAW0) || defined(CONFIG_L2_CACHE)
226 volatile immap_t *immap = (immap_t *)CFG_IMMR;
228 #ifdef CONFIG_CLEAR_LAW0
229 volatile ccsr_local_ecm_t *ecm = &immap->im_local_ecm;
231 /* clear alternate boot location LAW (used for sdram, or ddr bank) */
235 #if defined(CONFIG_L2_CACHE)
236 volatile ccsr_l2cache_t *l2cache = &immap->im_l2cache;
237 volatile uint cache_ctl;
245 cache_ctl = l2cache->l2ctl;
247 switch (cache_ctl & 0x30000000) {
249 if (ver == SVR_8548 || ver == SVR_8548_E ||
250 ver == SVR_8544 || ver == SVR_8568_E) {
251 printf ("L2 cache 512KB:");
252 /* set L2E=1, L2I=1, & L2SRAM=0 */
253 cache_ctl = 0xc0000000;
255 printf ("L2 cache 256KB:");
256 /* set L2E=1, L2I=1, & L2BLKSZ=2 (256 Kbyte) */
257 cache_ctl = 0xc8000000;
261 printf ("L2 cache 256KB:");
262 if (ver == SVR_8544 || ver == SVR_8544_E) {
263 cache_ctl = 0xc0000000; /* set L2E=1, L2I=1, & L2SRAM=0 */
269 printf ("L2 cache unknown size (0x%08x)\n", cache_ctl);
273 if (l2cache->l2ctl & 0x80000000) {
274 printf(" already enabled.");
275 l2srbar = l2cache->l2srbar0;
276 #ifdef CFG_INIT_L2_ADDR
277 if (l2cache->l2ctl & 0x00010000 && l2srbar >= CFG_FLASH_BASE) {
278 l2srbar = CFG_INIT_L2_ADDR;
279 l2cache->l2srbar0 = l2srbar;
280 printf(" Moving to 0x%08x", CFG_INIT_L2_ADDR);
282 #endif /* CFG_INIT_L2_ADDR */
286 l2cache->l2ctl = cache_ctl; /* invalidate & enable */
288 printf(" enabled\n");
291 printf("L2 cache: disabled\n");
294 uint qe_base = CFG_IMMR + 0x00080000; /* QE immr base */