2 * Copyright 2008-2010 Freescale Semiconductor, Inc.
4 * See file CREDITS for list of people who contributed to this
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24 #include <asm/processor.h>
29 #include <asm/fsl_law.h>
32 DECLARE_GLOBAL_DATA_PTR;
36 return mfspr(SPRN_PIR);
41 volatile ccsr_pic_t *pic = (void *)(CONFIG_SYS_MPC85xx_PIC_ADDR);
42 out_be32(&pic->pir, 1 << nr);
43 /* the dummy read works around an errata on early 85xx MP PICs */
44 (void)in_be32(&pic->pir);
45 out_be32(&pic->pir, 0x0);
50 int cpu_status(int nr)
52 u32 *table, id = get_my_id();
55 table = (u32 *)get_spin_virt_addr();
56 printf("table base @ 0x%p\n", table);
58 table = (u32 *)get_spin_virt_addr() + nr * NUM_BOOT_ENTRY;
59 printf("Running on cpu %d\n", id);
61 printf("table @ 0x%p\n", table);
62 printf(" addr - 0x%08x\n", table[BOOT_ENTRY_ADDR_LOWER]);
63 printf(" pir - 0x%08x\n", table[BOOT_ENTRY_PIR]);
64 printf(" r3 - 0x%08x\n", table[BOOT_ENTRY_R3_LOWER]);
65 printf(" r6 - 0x%08x\n", table[BOOT_ENTRY_R6_LOWER]);
71 #ifdef CONFIG_FSL_CORENET
72 int cpu_disable(int nr)
74 volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
76 setbits_be32(&gur->coredisrl, 1 << nr);
81 int is_core_disabled(int nr) {
82 ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
83 u32 coredisrl = in_be32(&gur->coredisrl);
85 return (coredisrl & (1 << nr));
88 int cpu_disable(int nr)
90 volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
94 setbits_be32(&gur->devdisr, MPC85xx_DEVDISR_CPU0);
97 setbits_be32(&gur->devdisr, MPC85xx_DEVDISR_CPU1);
100 printf("Invalid cpu number for disable %d\n", nr);
107 int is_core_disabled(int nr) {
108 ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
109 u32 devdisr = in_be32(&gur->devdisr);
113 return (devdisr & MPC85xx_DEVDISR_CPU0);
115 return (devdisr & MPC85xx_DEVDISR_CPU1);
117 printf("Invalid cpu number for disable %d\n", nr);
124 static u8 boot_entry_map[4] = {
131 int cpu_release(int nr, int argc, char * const argv[])
133 u32 i, val, *table = (u32 *)get_spin_virt_addr() + nr * NUM_BOOT_ENTRY;
136 if (nr == get_my_id()) {
137 printf("Invalid to release the boot core.\n\n");
142 printf("Invalid number of arguments to release.\n\n");
146 boot_addr = simple_strtoull(argv[0], NULL, 16);
148 /* handle pir, r3, r6 */
149 for (i = 1; i < 4; i++) {
150 if (argv[i][0] != '-') {
151 u8 entry = boot_entry_map[i];
152 val = simple_strtoul(argv[i], NULL, 16);
157 table[BOOT_ENTRY_ADDR_UPPER] = (u32)(boot_addr >> 32);
159 /* ensure all table updates complete before final address write */
162 table[BOOT_ENTRY_ADDR_LOWER] = (u32)(boot_addr & 0xffffffff);
167 u32 determine_mp_bootpg(void)
169 /* if we have 4G or more of memory, put the boot page at 4Gb-4k */
170 if ((u64)gd->ram_size > 0xfffff000)
173 return (gd->ram_size - 4096);
176 ulong get_spin_phys_addr(void)
178 extern ulong __secondary_start_page;
179 extern ulong __spin_table;
181 return (determine_mp_bootpg() +
182 (ulong)&__spin_table - (ulong)&__secondary_start_page);
185 ulong get_spin_virt_addr(void)
187 extern ulong __secondary_start_page;
188 extern ulong __spin_table;
190 return (CONFIG_BPTR_VIRT_ADDR +
191 (ulong)&__spin_table - (ulong)&__secondary_start_page);
194 #ifdef CONFIG_FSL_CORENET
195 static void plat_mp_up(unsigned long bootpg)
197 u32 up, cpu_up_mask, whoami;
198 u32 *table = (u32 *)get_spin_virt_addr();
199 volatile ccsr_gur_t *gur;
200 volatile ccsr_local_t *ccm;
201 volatile ccsr_rcpm_t *rcpm;
202 volatile ccsr_pic_t *pic;
207 gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
208 ccm = (void *)(CONFIG_SYS_FSL_CORENET_CCM_ADDR);
209 rcpm = (void *)(CONFIG_SYS_FSL_CORENET_RCPM_ADDR);
210 pic = (void *)(CONFIG_SYS_MPC85xx_PIC_ADDR);
212 nr_cpus = ((in_be32(&pic->frr) >> 8) & 0xff) + 1;
214 whoami = in_be32(&pic->whoami);
215 cpu_up_mask = 1 << whoami;
216 out_be32(&ccm->bstrl, bootpg);
218 e = find_law(bootpg);
219 out_be32(&ccm->bstrar, LAW_EN | e.trgt_id << 20 | LAW_SIZE_4K);
221 /* readback to sync write */
222 in_be32(&ccm->bstrar);
224 /* disable time base at the platform */
225 out_be32(&rcpm->ctbenrl, cpu_up_mask);
227 /* release the hounds */
228 up = ((1 << nr_cpus) - 1);
229 out_be32(&gur->brrl, up);
231 /* wait for everyone */
234 for (i = 0; i < nr_cpus; i++) {
235 if (table[i * NUM_BOOT_ENTRY + BOOT_ENTRY_ADDR_LOWER])
236 cpu_up_mask |= (1 << i);
239 if ((cpu_up_mask & up) == up)
247 printf("CPU up timeout. CPU up mask is %x should be %x\n",
250 /* enable time base at the platform */
251 out_be32(&rcpm->ctbenrl, 0);
254 out_be32(&rcpm->ctbenrl, (1 << nr_cpus) - 1);
256 #ifdef CONFIG_MPC8xxx_DISABLE_BPTR
258 * Disabling Boot Page Translation allows the memory region 0xfffff000
259 * to 0xffffffff to be used normally. Leaving Boot Page Translation
260 * enabled remaps 0xfffff000 to SDRAM which makes that memory region
261 * unusable for normal operation but it does allow OSes to easily
262 * reset a processor core to put it back into U-Boot's spinloop.
264 clrbits_be32(&ecm->bptr, 0x80000000);
268 static void plat_mp_up(unsigned long bootpg)
270 u32 up, cpu_up_mask, whoami;
271 u32 *table = (u32 *)get_spin_virt_addr();
273 volatile ccsr_local_ecm_t *ecm = (void *)(CONFIG_SYS_MPC85xx_ECM_ADDR);
274 volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
275 volatile ccsr_pic_t *pic = (void *)(CONFIG_SYS_MPC85xx_PIC_ADDR);
279 whoami = in_be32(&pic->whoami);
280 out_be32(&ecm->bptr, 0x80000000 | (bootpg >> 12));
282 /* disable time base at the platform */
283 devdisr = in_be32(&gur->devdisr);
285 devdisr |= MPC85xx_DEVDISR_TB0;
287 devdisr |= MPC85xx_DEVDISR_TB1;
288 out_be32(&gur->devdisr, devdisr);
290 /* release the hounds */
291 up = ((1 << cpu_numcores()) - 1);
292 bpcr = in_be32(&ecm->eebpcr);
294 out_be32(&ecm->eebpcr, bpcr);
295 asm("sync; isync; msync");
297 cpu_up_mask = 1 << whoami;
298 /* wait for everyone */
301 for (i = 0; i < cpu_numcores(); i++) {
302 if (table[i * NUM_BOOT_ENTRY + BOOT_ENTRY_ADDR_LOWER])
303 cpu_up_mask |= (1 << i);
306 if ((cpu_up_mask & up) == up)
314 printf("CPU up timeout. CPU up mask is %x should be %x\n",
317 /* enable time base at the platform */
319 devdisr |= MPC85xx_DEVDISR_TB1;
321 devdisr |= MPC85xx_DEVDISR_TB0;
322 out_be32(&gur->devdisr, devdisr);
326 devdisr &= ~(MPC85xx_DEVDISR_TB0 | MPC85xx_DEVDISR_TB1);
327 out_be32(&gur->devdisr, devdisr);
329 #ifdef CONFIG_MPC8xxx_DISABLE_BPTR
331 * Disabling Boot Page Translation allows the memory region 0xfffff000
332 * to 0xffffffff to be used normally. Leaving Boot Page Translation
333 * enabled remaps 0xfffff000 to SDRAM which makes that memory region
334 * unusable for normal operation but it does allow OSes to easily
335 * reset a processor core to put it back into U-Boot's spinloop.
337 clrbits_be32(&ecm->bptr, 0x80000000);
342 void cpu_mp_lmb_reserve(struct lmb *lmb)
344 u32 bootpg = determine_mp_bootpg();
346 lmb_reserve(lmb, bootpg, 4096);
351 extern ulong __secondary_start_page;
352 extern ulong __bootpg_addr;
353 ulong fixup = (ulong)&__secondary_start_page;
354 u32 bootpg = determine_mp_bootpg();
356 /* Store the bootpg's SDRAM address for use by secondary CPU cores */
357 __bootpg_addr = bootpg;
359 /* look for the tlb covering the reset page, there better be one */
360 int i = find_tlb_idx((void *)CONFIG_BPTR_VIRT_ADDR, 1);
362 /* we found a match */
364 /* map reset page to bootpg so we can copy code there */
367 set_tlb(1, CONFIG_BPTR_VIRT_ADDR, bootpg, /* tlb, epn, rpn */
368 MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G, /* perms, wimge */
369 0, i, BOOKE_PAGESZ_4K, 1); /* ts, esel, tsize, iprot */
371 memcpy((void *)CONFIG_BPTR_VIRT_ADDR, (void *)fixup, 4096);
375 puts("WARNING: No reset page TLB. "
376 "Skipping secondary core setup\n");