blob: a527cf3047ad76eeb9f1904ab1c6091922554cb0 [file] [log] [blame]
Kumar Galaec2b74f2008-01-17 16:48:33 -06001/*
2 * Copyright 2008 Freescale Semiconductor.
3 *
4 * See file CREDITS for list of people who contributed to this
5 * project.
6 *
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.
11 *
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.
16 *
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,
20 * MA 02111-1307 USA
21 */
22
23#include <common.h>
24#include <asm/processor.h>
25#include <ioports.h>
Kumar Galadd6c9102008-03-26 08:53:53 -050026#include <lmb.h>
Kumar Galaec2b74f2008-01-17 16:48:33 -060027#include <asm/io.h>
28#include "mp.h"
29
30DECLARE_GLOBAL_DATA_PTR;
31
Kumar Galaec2b74f2008-01-17 16:48:33 -060032u32 get_my_id()
33{
34 return mfspr(SPRN_PIR);
35}
36
37int cpu_reset(int nr)
38{
39 volatile ccsr_pic_t *pic = (void *)(CFG_MPC85xx_PIC_ADDR);
40 out_be32(&pic->pir, 1 << nr);
41 (void)in_be32(&pic->pir);
42 out_be32(&pic->pir, 0x0);
43
44 return 0;
45}
46
47int cpu_status(int nr)
48{
49 u32 *table, id = get_my_id();
50
51 if (nr == id) {
52 table = (u32 *)get_spin_addr();
53 printf("table base @ 0x%08x\n", table);
54 } else {
55 table = (u32 *)get_spin_addr() + nr * NUM_BOOT_ENTRY;
56 printf("Running on cpu %d\n", id);
57 printf("\n");
58 printf("table @ 0x%08x:\n", table);
Kumar Gala79679d82008-03-26 08:34:25 -050059 printf(" addr - 0x%08x\n", table[BOOT_ENTRY_ADDR_LOWER]);
Kumar Galaec2b74f2008-01-17 16:48:33 -060060 printf(" pir - 0x%08x\n", table[BOOT_ENTRY_PIR]);
Kumar Gala79679d82008-03-26 08:34:25 -050061 printf(" r3 - 0x%08x\n", table[BOOT_ENTRY_R3_LOWER]);
62 printf(" r6 - 0x%08x\n", table[BOOT_ENTRY_R6_LOWER]);
Kumar Galaec2b74f2008-01-17 16:48:33 -060063 }
64
65 return 0;
66}
67
Kumar Gala79679d82008-03-26 08:34:25 -050068static u8 boot_entry_map[4] = {
69 0,
70 BOOT_ENTRY_PIR,
71 BOOT_ENTRY_R3_LOWER,
72 BOOT_ENTRY_R6_LOWER,
73};
74
75int cpu_release(int nr, int argc, char *argv[])
Kumar Galaec2b74f2008-01-17 16:48:33 -060076{
77 u32 i, val, *table = (u32 *)get_spin_addr() + nr * NUM_BOOT_ENTRY;
Kumar Gala79679d82008-03-26 08:34:25 -050078 u64 boot_addr;
Kumar Galaec2b74f2008-01-17 16:48:33 -060079
80 if (nr == get_my_id()) {
81 printf("Invalid to release the boot core.\n\n");
82 return 1;
83 }
84
Kumar Gala79679d82008-03-26 08:34:25 -050085 if (argc != 4) {
Kumar Galaec2b74f2008-01-17 16:48:33 -060086 printf("Invalid number of arguments to release.\n\n");
87 return 1;
88 }
89
Kumar Gala79679d82008-03-26 08:34:25 -050090#ifdef CFG_64BIT_STRTOUL
91 boot_addr = simple_strtoull(argv[0], NULL, 16);
92#else
93 boot_addr = simple_strtoul(argv[0], NULL, 16);
94#endif
95
96 /* handle pir, r3, r6 */
97 for (i = 1; i < 4; i++) {
Kumar Galaec2b74f2008-01-17 16:48:33 -060098 if (argv[i][0] != '-') {
Kumar Gala79679d82008-03-26 08:34:25 -050099 u8 entry = boot_entry_map[i];
Kumar Galaec2b74f2008-01-17 16:48:33 -0600100 val = simple_strtoul(argv[i], NULL, 16);
Kumar Gala79679d82008-03-26 08:34:25 -0500101 table[entry] = val;
Kumar Galaec2b74f2008-01-17 16:48:33 -0600102 }
103 }
104
Kumar Gala79679d82008-03-26 08:34:25 -0500105 table[BOOT_ENTRY_ADDR_UPPER] = (u32)(boot_addr >> 32);
Kumar Galacf6cc012008-04-28 02:24:04 -0500106
107 /* ensure all table updates complete before final address write */
108 eieio();
109
Kumar Gala79679d82008-03-26 08:34:25 -0500110 table[BOOT_ENTRY_ADDR_LOWER] = (u32)(boot_addr & 0xffffffff);
Kumar Galaec2b74f2008-01-17 16:48:33 -0600111
112 return 0;
113}
114
115ulong get_spin_addr(void)
116{
117 extern ulong __secondary_start_page;
118 extern ulong __spin_table;
119
120 ulong addr =
121 (ulong)&__spin_table - (ulong)&__secondary_start_page;
122 addr += 0xfffff000;
123
124 return addr;
125}
126
127static void pq3_mp_up(unsigned long bootpg)
128{
129 u32 up, cpu_up_mask, whoami;
130 u32 *table = (u32 *)get_spin_addr();
131 volatile u32 bpcr;
132 volatile ccsr_local_ecm_t *ecm = (void *)(CFG_MPC85xx_ECM_ADDR);
133 volatile ccsr_gur_t *gur = (void *)(CFG_MPC85xx_GUTS_ADDR);
134 volatile ccsr_pic_t *pic = (void *)(CFG_MPC85xx_PIC_ADDR);
135 u32 devdisr;
136 int timeout = 10;
137
138 whoami = in_be32(&pic->whoami);
139 out_be32(&ecm->bptr, 0x80000000 | (bootpg >> 12));
140
141 /* disable time base at the platform */
142 devdisr = in_be32(&gur->devdisr);
143 if (whoami)
144 devdisr |= MPC85xx_DEVDISR_TB0;
145 else
146 devdisr |= MPC85xx_DEVDISR_TB1;
147 out_be32(&gur->devdisr, devdisr);
148
149 /* release the hounds */
150 up = ((1 << CONFIG_NR_CPUS) - 1);
151 bpcr = in_be32(&ecm->eebpcr);
152 bpcr |= (up << 24);
153 out_be32(&ecm->eebpcr, bpcr);
154 asm("sync; isync; msync");
155
156 cpu_up_mask = 1 << whoami;
157 /* wait for everyone */
158 while (timeout) {
159 int i;
Kumar Galacf6cc012008-04-28 02:24:04 -0500160 for (i = 0; i < CONFIG_NR_CPUS; i++) {
Kumar Gala97b3ecb2008-04-09 04:20:57 -0500161 if (table[i * NUM_BOOT_ENTRY + BOOT_ENTRY_ADDR_LOWER])
Kumar Galaec2b74f2008-01-17 16:48:33 -0600162 cpu_up_mask |= (1 << i);
163 };
164
165 if ((cpu_up_mask & up) == up)
166 break;
167
168 udelay(100);
169 timeout--;
170 }
171
Kumar Gala97b3ecb2008-04-09 04:20:57 -0500172 if (timeout == 0)
173 printf("CPU up timeout. CPU up mask is %x should be %x\n",
174 cpu_up_mask, up);
175
Kumar Galaec2b74f2008-01-17 16:48:33 -0600176 /* enable time base at the platform */
177 if (whoami)
178 devdisr |= MPC85xx_DEVDISR_TB1;
179 else
180 devdisr |= MPC85xx_DEVDISR_TB0;
181 out_be32(&gur->devdisr, devdisr);
182 mtspr(SPRN_TBWU, 0);
183 mtspr(SPRN_TBWL, 0);
184
185 devdisr &= ~(MPC85xx_DEVDISR_TB0 | MPC85xx_DEVDISR_TB1);
186 out_be32(&gur->devdisr, devdisr);
187}
188
Kumar Galadd6c9102008-03-26 08:53:53 -0500189void cpu_mp_lmb_reserve(struct lmb *lmb)
190{
191 u32 bootpg;
192
193 /* if we have 4G or more of memory, put the boot page at 4Gb-4k */
194 if ((u64)gd->ram_size > 0xfffff000)
195 bootpg = 0xfffff000;
196 else
197 bootpg = gd->ram_size - 4096;
198
199 lmb_reserve(lmb, bootpg, 4096);
200}
201
Kumar Galaec2b74f2008-01-17 16:48:33 -0600202void setup_mp(void)
203{
204 extern ulong __secondary_start_page;
205 ulong fixup = (ulong)&__secondary_start_page;
206 u32 bootpg;
207
208 /* if we have 4G or more of memory, put the boot page at 4Gb-4k */
209 if ((u64)gd->ram_size > 0xfffff000)
210 bootpg = 0xfffff000;
211 else
212 bootpg = gd->ram_size - 4096;
213
214 memcpy((void *)bootpg, (void *)fixup, 4096);
215 flush_cache(bootpg, 4096);
216
217 pq3_mp_up(bootpg);
218}