blob: 76f02a4917ff289c014408acde62f2dd34a30456 [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{
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020039 volatile ccsr_pic_t *pic = (void *)(CONFIG_SYS_MPC85xx_PIC_ADDR);
Kumar Galaec2b74f2008-01-17 16:48:33 -060040 out_be32(&pic->pir, 1 << nr);
Kumar Galac840d262009-03-31 23:11:05 -050041 /* the dummy read works around an errata on early 85xx MP PICs */
Kumar Galaec2b74f2008-01-17 16:48:33 -060042 (void)in_be32(&pic->pir);
43 out_be32(&pic->pir, 0x0);
44
45 return 0;
46}
47
48int cpu_status(int nr)
49{
50 u32 *table, id = get_my_id();
51
52 if (nr == id) {
53 table = (u32 *)get_spin_addr();
Kumar Gala348753d2008-07-14 14:03:02 -050054 printf("table base @ 0x%p\n", table);
Kumar Galaec2b74f2008-01-17 16:48:33 -060055 } else {
56 table = (u32 *)get_spin_addr() + nr * NUM_BOOT_ENTRY;
57 printf("Running on cpu %d\n", id);
58 printf("\n");
Kumar Gala348753d2008-07-14 14:03:02 -050059 printf("table @ 0x%p\n", table);
Kumar Gala79679d82008-03-26 08:34:25 -050060 printf(" addr - 0x%08x\n", table[BOOT_ENTRY_ADDR_LOWER]);
Kumar Galaec2b74f2008-01-17 16:48:33 -060061 printf(" pir - 0x%08x\n", table[BOOT_ENTRY_PIR]);
Kumar Gala79679d82008-03-26 08:34:25 -050062 printf(" r3 - 0x%08x\n", table[BOOT_ENTRY_R3_LOWER]);
63 printf(" r6 - 0x%08x\n", table[BOOT_ENTRY_R6_LOWER]);
Kumar Galaec2b74f2008-01-17 16:48:33 -060064 }
65
66 return 0;
67}
68
Kumar Gala79679d82008-03-26 08:34:25 -050069static u8 boot_entry_map[4] = {
70 0,
71 BOOT_ENTRY_PIR,
72 BOOT_ENTRY_R3_LOWER,
73 BOOT_ENTRY_R6_LOWER,
74};
75
76int cpu_release(int nr, int argc, char *argv[])
Kumar Galaec2b74f2008-01-17 16:48:33 -060077{
78 u32 i, val, *table = (u32 *)get_spin_addr() + nr * NUM_BOOT_ENTRY;
Kumar Gala79679d82008-03-26 08:34:25 -050079 u64 boot_addr;
Kumar Galaec2b74f2008-01-17 16:48:33 -060080
81 if (nr == get_my_id()) {
82 printf("Invalid to release the boot core.\n\n");
83 return 1;
84 }
85
Kumar Gala79679d82008-03-26 08:34:25 -050086 if (argc != 4) {
Kumar Galaec2b74f2008-01-17 16:48:33 -060087 printf("Invalid number of arguments to release.\n\n");
88 return 1;
89 }
90
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020091#ifdef CONFIG_SYS_64BIT_STRTOUL
Kumar Gala79679d82008-03-26 08:34:25 -050092 boot_addr = simple_strtoull(argv[0], NULL, 16);
93#else
94 boot_addr = simple_strtoul(argv[0], NULL, 16);
95#endif
96
97 /* handle pir, r3, r6 */
98 for (i = 1; i < 4; i++) {
Kumar Galaec2b74f2008-01-17 16:48:33 -060099 if (argv[i][0] != '-') {
Kumar Gala79679d82008-03-26 08:34:25 -0500100 u8 entry = boot_entry_map[i];
Kumar Galaec2b74f2008-01-17 16:48:33 -0600101 val = simple_strtoul(argv[i], NULL, 16);
Kumar Gala79679d82008-03-26 08:34:25 -0500102 table[entry] = val;
Kumar Galaec2b74f2008-01-17 16:48:33 -0600103 }
104 }
105
Kumar Gala79679d82008-03-26 08:34:25 -0500106 table[BOOT_ENTRY_ADDR_UPPER] = (u32)(boot_addr >> 32);
Kumar Galacf6cc012008-04-28 02:24:04 -0500107
108 /* ensure all table updates complete before final address write */
109 eieio();
110
Kumar Gala79679d82008-03-26 08:34:25 -0500111 table[BOOT_ENTRY_ADDR_LOWER] = (u32)(boot_addr & 0xffffffff);
Kumar Galaec2b74f2008-01-17 16:48:33 -0600112
113 return 0;
114}
115
Kumar Galac840d262009-03-31 23:11:05 -0500116u32 determine_mp_bootpg(void)
117{
118 /* if we have 4G or more of memory, put the boot page at 4Gb-4k */
119 if ((u64)gd->ram_size > 0xfffff000)
120 return (0xfffff000);
121
122 return (gd->ram_size - 4096);
123}
124
Kumar Galaec2b74f2008-01-17 16:48:33 -0600125ulong get_spin_addr(void)
126{
127 extern ulong __secondary_start_page;
128 extern ulong __spin_table;
129
130 ulong addr =
131 (ulong)&__spin_table - (ulong)&__secondary_start_page;
132 addr += 0xfffff000;
133
134 return addr;
135}
136
137static void pq3_mp_up(unsigned long bootpg)
138{
139 u32 up, cpu_up_mask, whoami;
140 u32 *table = (u32 *)get_spin_addr();
141 volatile u32 bpcr;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200142 volatile ccsr_local_ecm_t *ecm = (void *)(CONFIG_SYS_MPC85xx_ECM_ADDR);
143 volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
144 volatile ccsr_pic_t *pic = (void *)(CONFIG_SYS_MPC85xx_PIC_ADDR);
Kumar Galaec2b74f2008-01-17 16:48:33 -0600145 u32 devdisr;
146 int timeout = 10;
147
148 whoami = in_be32(&pic->whoami);
149 out_be32(&ecm->bptr, 0x80000000 | (bootpg >> 12));
150
151 /* disable time base at the platform */
152 devdisr = in_be32(&gur->devdisr);
153 if (whoami)
154 devdisr |= MPC85xx_DEVDISR_TB0;
155 else
156 devdisr |= MPC85xx_DEVDISR_TB1;
157 out_be32(&gur->devdisr, devdisr);
158
159 /* release the hounds */
Kumar Gala902ca092008-08-11 11:29:28 -0500160 up = ((1 << CONFIG_NUM_CPUS) - 1);
Kumar Galaec2b74f2008-01-17 16:48:33 -0600161 bpcr = in_be32(&ecm->eebpcr);
162 bpcr |= (up << 24);
163 out_be32(&ecm->eebpcr, bpcr);
164 asm("sync; isync; msync");
165
166 cpu_up_mask = 1 << whoami;
167 /* wait for everyone */
168 while (timeout) {
169 int i;
Kumar Gala902ca092008-08-11 11:29:28 -0500170 for (i = 0; i < CONFIG_NUM_CPUS; i++) {
Kumar Gala97b3ecb2008-04-09 04:20:57 -0500171 if (table[i * NUM_BOOT_ENTRY + BOOT_ENTRY_ADDR_LOWER])
Kumar Galaec2b74f2008-01-17 16:48:33 -0600172 cpu_up_mask |= (1 << i);
173 };
174
175 if ((cpu_up_mask & up) == up)
176 break;
177
178 udelay(100);
179 timeout--;
180 }
181
Kumar Gala97b3ecb2008-04-09 04:20:57 -0500182 if (timeout == 0)
183 printf("CPU up timeout. CPU up mask is %x should be %x\n",
184 cpu_up_mask, up);
185
Kumar Galaec2b74f2008-01-17 16:48:33 -0600186 /* enable time base at the platform */
187 if (whoami)
188 devdisr |= MPC85xx_DEVDISR_TB1;
189 else
190 devdisr |= MPC85xx_DEVDISR_TB0;
191 out_be32(&gur->devdisr, devdisr);
192 mtspr(SPRN_TBWU, 0);
193 mtspr(SPRN_TBWL, 0);
194
195 devdisr &= ~(MPC85xx_DEVDISR_TB0 | MPC85xx_DEVDISR_TB1);
196 out_be32(&gur->devdisr, devdisr);
197}
198
Kumar Galadd6c9102008-03-26 08:53:53 -0500199void cpu_mp_lmb_reserve(struct lmb *lmb)
200{
Kumar Galac840d262009-03-31 23:11:05 -0500201 u32 bootpg = determine_mp_bootpg();
Kumar Galadd6c9102008-03-26 08:53:53 -0500202
203 lmb_reserve(lmb, bootpg, 4096);
204}
205
Kumar Galaec2b74f2008-01-17 16:48:33 -0600206void setup_mp(void)
207{
208 extern ulong __secondary_start_page;
209 ulong fixup = (ulong)&__secondary_start_page;
Kumar Galac840d262009-03-31 23:11:05 -0500210 u32 bootpg = determine_mp_bootpg();
Kumar Galaec2b74f2008-01-17 16:48:33 -0600211
212 memcpy((void *)bootpg, (void *)fixup, 4096);
213 flush_cache(bootpg, 4096);
214
215 pq3_mp_up(bootpg);
216}