2 * (C) Copyright 2000-2006
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,
26 #include <ppc4xx_enet.h>
27 #include <asm/processor.h>
30 #if defined(CONFIG_405GP) || defined(CONFIG_405EP)
31 DECLARE_GLOBAL_DATA_PTR;
35 #define mtebc(reg, data) mtdcr(ebccfga,reg);mtdcr(ebccfgd,data)
37 #ifdef CFG_INIT_DCACHE_CS
38 # if (CFG_INIT_DCACHE_CS == 0)
41 # if (defined(CFG_EBC_PB0AP) && defined(CFG_EBC_PB0CR))
42 # define PBxAP_VAL CFG_EBC_PB0AP
43 # define PBxCR_VAL CFG_EBC_PB0CR
46 # if (CFG_INIT_DCACHE_CS == 1)
49 # if (defined(CFG_EBC_PB1AP) && defined(CFG_EBC_PB1CR))
50 # define PBxAP_VAL CFG_EBC_PB1AP
51 # define PBxCR_VAL CFG_EBC_PB1CR
54 # if (CFG_INIT_DCACHE_CS == 2)
57 # if (defined(CFG_EBC_PB2AP) && defined(CFG_EBC_PB2CR))
58 # define PBxAP_VAL CFG_EBC_PB2AP
59 # define PBxCR_VAL CFG_EBC_PB2CR
62 # if (CFG_INIT_DCACHE_CS == 3)
65 # if (defined(CFG_EBC_PB3AP) && defined(CFG_EBC_PB3CR))
66 # define PBxAP_VAL CFG_EBC_PB3AP
67 # define PBxCR_VAL CFG_EBC_PB3CR
70 # if (CFG_INIT_DCACHE_CS == 4)
73 # if (defined(CFG_EBC_PB4AP) && defined(CFG_EBC_PB4CR))
74 # define PBxAP_VAL CFG_EBC_PB4AP
75 # define PBxCR_VAL CFG_EBC_PB4CR
78 # if (CFG_INIT_DCACHE_CS == 5)
81 # if (defined(CFG_EBC_PB5AP) && defined(CFG_EBC_PB5CR))
82 # define PBxAP_VAL CFG_EBC_PB5AP
83 # define PBxCR_VAL CFG_EBC_PB5CR
86 # if (CFG_INIT_DCACHE_CS == 6)
89 # if (defined(CFG_EBC_PB6AP) && defined(CFG_EBC_PB6CR))
90 # define PBxAP_VAL CFG_EBC_PB6AP
91 # define PBxCR_VAL CFG_EBC_PB6CR
94 # if (CFG_INIT_DCACHE_CS == 7)
97 # if (defined(CFG_EBC_PB7AP) && defined(CFG_EBC_PB7CR))
98 # define PBxAP_VAL CFG_EBC_PB7AP
99 # define PBxCR_VAL CFG_EBC_PB7CR
102 #endif /* CFG_INIT_DCACHE_CS */
104 #if defined(CFG_440_GPIO_TABLE)
105 gpio_param_s gpio_tab[GPIO_GROUP_MAX][GPIO_MAX] = CFG_440_GPIO_TABLE;
107 void set_chip_gpio_configuration(gpio_param_s (*gpio_tab)[GPIO_GROUP_MAX][GPIO_MAX])
109 unsigned char i=0, j=0, reg_offset = 0, gpio_core;
110 unsigned long gpio_reg, gpio_core_add;
112 for (gpio_core=0; gpio_core<GPIO_GROUP_MAX; gpio_core++) {
115 /* GPIO config of the GPIOs 0 to 31 */
116 for (i=0; i<GPIO_MAX; i++, j++) {
117 if (i == GPIO_MAX/2) {
122 gpio_core_add = (*gpio_tab)[gpio_core][i].add;
124 if (((*gpio_tab)[gpio_core][i].in_out == GPIO_IN) ||
125 ((*gpio_tab)[gpio_core][i].in_out == GPIO_BI)) {
127 switch ((*gpio_tab)[gpio_core][i].alt_nb) {
132 gpio_reg = in32(GPIO_IS1(gpio_core_add+reg_offset))
133 & ~(GPIO_MASK >> (j*2));
134 gpio_reg = gpio_reg | (GPIO_IN_SEL >> (j*2));
135 out32(GPIO_IS1(gpio_core_add+reg_offset), gpio_reg);
139 gpio_reg = in32(GPIO_IS2(gpio_core_add+reg_offset))
140 & ~(GPIO_MASK >> (j*2));
141 gpio_reg = gpio_reg | (GPIO_IN_SEL >> (j*2));
142 out32(GPIO_IS2(gpio_core_add+reg_offset), gpio_reg);
146 gpio_reg = in32(GPIO_IS3(gpio_core_add+reg_offset))
147 & ~(GPIO_MASK >> (j*2));
148 gpio_reg = gpio_reg | (GPIO_IN_SEL >> (j*2));
149 out32(GPIO_IS3(gpio_core_add+reg_offset), gpio_reg);
154 if (((*gpio_tab)[gpio_core][i].in_out == GPIO_OUT) ||
155 ((*gpio_tab)[gpio_core][i].in_out == GPIO_BI)) {
157 switch ((*gpio_tab)[gpio_core][i].alt_nb) {
159 if (gpio_core == GPIO0) {
160 gpio_reg = in32(GPIO0_TCR) | (0x80000000 >> (j));
161 out32(GPIO0_TCR, gpio_reg);
164 if (gpio_core == GPIO1) {
165 gpio_reg = in32(GPIO1_TCR) | (0x80000000 >> (j));
166 out32(GPIO1_TCR, gpio_reg);
169 gpio_reg = in32(GPIO_OS(gpio_core_add+reg_offset))
170 & ~(GPIO_MASK >> (j*2));
171 out32(GPIO_OS(gpio_core_add+reg_offset), gpio_reg);
172 gpio_reg = in32(GPIO_TS(gpio_core_add+reg_offset))
173 & ~(GPIO_MASK >> (j*2));
174 out32(GPIO_TS(gpio_core_add+reg_offset), gpio_reg);
178 gpio_reg = in32(GPIO_OS(gpio_core_add+reg_offset))
179 & ~(GPIO_MASK >> (j*2));
180 gpio_reg = gpio_reg | (GPIO_ALT1_SEL >> (j*2));
181 out32(GPIO_OS(gpio_core_add+reg_offset), gpio_reg);
182 gpio_reg = in32(GPIO_TS(gpio_core_add+reg_offset))
183 & ~(GPIO_MASK >> (j*2));
184 gpio_reg = gpio_reg | (GPIO_ALT1_SEL >> (j*2));
185 out32(GPIO_TS(gpio_core_add+reg_offset), gpio_reg);
189 gpio_reg = in32(GPIO_OS(gpio_core_add+reg_offset))
190 & ~(GPIO_MASK >> (j*2));
191 gpio_reg = gpio_reg | (GPIO_ALT2_SEL >> (j*2));
192 out32(GPIO_OS(gpio_core_add+reg_offset), gpio_reg);
193 gpio_reg = in32(GPIO_TS(gpio_core_add+reg_offset))
194 & ~(GPIO_MASK >> (j*2));
195 gpio_reg = gpio_reg | (GPIO_ALT2_SEL >> (j*2));
196 out32(GPIO_TS(gpio_core_add+reg_offset), gpio_reg);
200 gpio_reg = in32(GPIO_OS(gpio_core_add+reg_offset))
201 & ~(GPIO_MASK >> (j*2));
202 gpio_reg = gpio_reg | (GPIO_ALT3_SEL >> (j*2));
203 out32(GPIO_OS(gpio_core_add+reg_offset), gpio_reg);
204 gpio_reg = in32(GPIO_TS(gpio_core_add+reg_offset))
205 & ~(GPIO_MASK >> (j*2));
206 gpio_reg = gpio_reg | (GPIO_ALT3_SEL >> (j*2));
207 out32(GPIO_TS(gpio_core_add+reg_offset), gpio_reg);
214 #endif /* CFG_440_GPIO_TABLE */
217 * Breath some life into the CPU...
219 * Set up the memory map,
220 * initialize a bunch of registers
225 #if defined(CONFIG_405EP)
227 * GPIO0 setup (select GPIO or alternate function)
229 out32(GPIO0_OSRH, CFG_GPIO0_OSRH); /* output select */
230 out32(GPIO0_OSRL, CFG_GPIO0_OSRL);
231 out32(GPIO0_ISR1H, CFG_GPIO0_ISR1H); /* input select */
232 out32(GPIO0_ISR1L, CFG_GPIO0_ISR1L);
233 out32(GPIO0_TSRH, CFG_GPIO0_TSRH); /* three-state select */
234 out32(GPIO0_TSRL, CFG_GPIO0_TSRL);
235 out32(GPIO0_TCR, CFG_GPIO0_TCR); /* enable output driver for outputs */
238 * Set EMAC noise filter bits
240 mtdcr(cpc0_epctl, CPC0_EPRCSR_E0NFE | CPC0_EPRCSR_E1NFE);
241 #endif /* CONFIG_405EP */
243 #if defined(CFG_440_GPIO_TABLE)
244 set_chip_gpio_configuration(&gpio_tab);
245 #endif /* CFG_440_GPIO_TABLE */
248 * External Bus Controller (EBC) Setup
250 #if (defined(CFG_EBC_PB0AP) && defined(CFG_EBC_PB0CR))
251 #if (defined(CONFIG_405GP) || defined(CONFIG_405CR) || \
252 defined(CONFIG_405EP) || defined(CONFIG_405))
254 * Move the next instructions into icache, since these modify the flash
255 * we are running from!
257 asm volatile(" bl 0f" ::: "lr");
258 asm volatile("0: mflr 3" ::: "r3");
259 asm volatile(" addi 4, 0, 14" ::: "r4");
260 asm volatile(" mtctr 4" ::: "ctr");
261 asm volatile("1: icbt 0, 3");
262 asm volatile(" addi 3, 3, 32" ::: "r3");
263 asm volatile(" bdnz 1b" ::: "ctr", "cr0");
264 asm volatile(" addis 3, 0, 0x0" ::: "r3");
265 asm volatile(" ori 3, 3, 0xA000" ::: "r3");
266 asm volatile(" mtctr 3" ::: "ctr");
267 asm volatile("2: bdnz 2b" ::: "ctr", "cr0");
270 mtebc(pb0ap, CFG_EBC_PB0AP);
271 mtebc(pb0cr, CFG_EBC_PB0CR);
274 #if (defined(CFG_EBC_PB1AP) && defined(CFG_EBC_PB1CR) && !(CFG_INIT_DCACHE_CS == 1))
275 mtebc(pb1ap, CFG_EBC_PB1AP);
276 mtebc(pb1cr, CFG_EBC_PB1CR);
279 #if (defined(CFG_EBC_PB2AP) && defined(CFG_EBC_PB2CR) && !(CFG_INIT_DCACHE_CS == 2))
280 mtebc(pb2ap, CFG_EBC_PB2AP);
281 mtebc(pb2cr, CFG_EBC_PB2CR);
284 #if (defined(CFG_EBC_PB3AP) && defined(CFG_EBC_PB3CR) && !(CFG_INIT_DCACHE_CS == 3))
285 mtebc(pb3ap, CFG_EBC_PB3AP);
286 mtebc(pb3cr, CFG_EBC_PB3CR);
289 #if (defined(CFG_EBC_PB4AP) && defined(CFG_EBC_PB4CR) && !(CFG_INIT_DCACHE_CS == 4))
290 mtebc(pb4ap, CFG_EBC_PB4AP);
291 mtebc(pb4cr, CFG_EBC_PB4CR);
294 #if (defined(CFG_EBC_PB5AP) && defined(CFG_EBC_PB5CR) && !(CFG_INIT_DCACHE_CS == 5))
295 mtebc(pb5ap, CFG_EBC_PB5AP);
296 mtebc(pb5cr, CFG_EBC_PB5CR);
299 #if (defined(CFG_EBC_PB6AP) && defined(CFG_EBC_PB6CR) && !(CFG_INIT_DCACHE_CS == 6))
300 mtebc(pb6ap, CFG_EBC_PB6AP);
301 mtebc(pb6cr, CFG_EBC_PB6CR);
304 #if (defined(CFG_EBC_PB7AP) && defined(CFG_EBC_PB7CR) && !(CFG_INIT_DCACHE_CS == 7))
305 mtebc(pb7ap, CFG_EBC_PB7AP);
306 mtebc(pb7cr, CFG_EBC_PB7CR);
309 #if defined(CONFIG_WATCHDOG)
313 #if defined(CONFIG_440EP) || defined(CONFIG_440GR)
314 val |= 0xb8000000; /* generate system reset after 1.34 seconds */
316 val |= 0xf0000000; /* generate system reset after 2.684 seconds */
321 val |= 0x80000000; /* enable watchdog timer */
324 reset_4xx_watchdog();
325 #endif /* CONFIG_WATCHDOG */
329 * initialize higher level parts of CPU like time base and timers
331 int cpu_init_r (void)
333 #if defined(CONFIG_405GP) || defined(CONFIG_405EP)
336 #if defined(CONFIG_405GP)
337 uint pvr = get_pvr();
340 #ifdef CFG_INIT_DCACHE_CS
342 * Flush and invalidate dcache, then disable CS for temporary stack.
343 * Afterwards, this CS can be used for other purposes
345 dcache_disable(); /* flush and invalidate dcache */
347 mtebc(PBxCR, 0); /* disable CS for temporary stack */
349 #if (defined(PBxAP_VAL) && defined(PBxCR_VAL))
351 * Write new value into CS register
353 mtebc(PBxAP, PBxAP_VAL);
354 mtebc(PBxCR, PBxCR_VAL);
356 #endif /* CFG_INIT_DCACHE_CS */
359 * Write Ethernetaddress into on-chip register
362 reg |= bd->bi_enetaddr[0]; /* set high address */
364 reg |= bd->bi_enetaddr[1];
365 out32 (EMAC_IAH, reg);
368 reg |= bd->bi_enetaddr[2]; /* set low address */
370 reg |= bd->bi_enetaddr[3];
372 reg |= bd->bi_enetaddr[4];
374 reg |= bd->bi_enetaddr[5];
375 out32 (EMAC_IAL, reg);
377 #if defined(CONFIG_405GP)
379 * Set edge conditioning circuitry on PPC405GPr
380 * for compatibility to existing PPC405GP designs.
382 if ((pvr & 0xfffffff0) == (PVR_405GPR_RB & 0xfffffff0)) {
383 mtdcr(ecr, 0x60606000);
385 #endif /* defined(CONFIG_405GP) */
386 #endif /* defined(CONFIG_405GP) || defined(CONFIG_405EP) */