2 * Copyright 2008-2011 Freescale Semiconductor, Inc.
3 * Kumar Gala <kumar.gala@freescale.com>
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,
24 #include <asm-offsets.h>
29 #define _LINUX_CONFIG_H 1 /* avoid reading Linux autoconf.h file */
31 #include <ppc_asm.tmpl>
34 #include <asm/cache.h>
37 /* To boot secondary cpus, we need a place for them to start up.
38 * Normally, they start at 0xfffffffc, but that's usually the
39 * firmware, and we don't want to have to run the firmware again.
40 * Instead, the primary cpu will set the BPTR to point here to
41 * this page. We then set up the core, and head to
42 * start_secondary. Note that this means that the code below
43 * must never exceed 1023 instructions (the branch at the end
44 * would then be the 1024th).
46 .globl __secondary_start_page
48 __secondary_start_page:
49 /* First do some preliminary setup */
50 lis r3, HID0_EMCP@h /* enable machine check */
52 ori r3,r3,HID0_TBEN@l /* enable Timebase */
54 #ifdef CONFIG_PHYS_64BIT
55 ori r3,r3,HID0_ENMAS7@l /* enable MAS7 updates */
60 li r3,(HID1_ASTME|HID1_ABE)@l /* Addr streaming & broadcast */
63 cmpwi r0,0x50@l /* if we are rev 5.0 or greater set MBDD */
65 /* Set MBDD bit also */
66 ori r3, r3, HID1_MBDD@l
71 /* Enable branch prediction */
73 ori r3,r3,BUCSR_ENABLE@l
81 /* Enable/invalidate the I-Cache */
82 lis r2,(L1CSR1_ICFI|L1CSR1_ICLFR)@h
83 ori r2,r2,(L1CSR1_ICFI|L1CSR1_ICLFR)@l
90 lis r3,(L1CSR1_CPE|L1CSR1_ICE)@h
91 ori r3,r3,(L1CSR1_CPE|L1CSR1_ICE)@l
96 andi. r1,r3,L1CSR1_ICE@l
99 /* Enable/invalidate the D-Cache */
100 lis r2,(L1CSR0_DCFI|L1CSR0_DCLFR)@h
101 ori r2,r2,(L1CSR0_DCFI|L1CSR0_DCLFR)@l
108 lis r3,(L1CSR0_CPE|L1CSR0_DCE)@h
109 ori r3,r3,(L1CSR0_CPE|L1CSR0_DCE)@l
114 andi. r1,r3,L1CSR0_DCE@l
117 #define toreset(x) (x - __secondary_start_page + 0xfffff000)
119 /* get our PIR to figure out our table entry */
120 lis r3,toreset(__spin_table)@h
121 ori r3,r3,toreset(__spin_table)@l
123 /* r10 has the base address for the entry */
126 rlwinm r4,r0,27,27,31
133 #if defined(CONFIG_E500MC) && defined(CONFIG_SYS_CACHE_STASHING)
134 /* set stash id to (coreID) * 2 + 32 + L1 CT (0) */
140 #if defined(CONFIG_SYS_P4080_ERRATUM_CPU22)
142 oris r8,r8,(L1CSR2_DCWS)@h
146 #ifdef CONFIG_BACKSIDE_L2_CACHE
147 /* skip L2 setup on P2040/P2040E as they have no L2 */
150 ori r3,r3,SVR_P2040@l
155 ori r3,r3,SVR_P2040_E@l
159 /* Enable/invalidate the L2 cache */
161 lis r2,(L2CSR0_L2FI|L2CSR0_L2LFC)@h
162 ori r2,r2,(L2CSR0_L2FI|L2CSR0_L2LFC)@l
169 #ifdef CONFIG_SYS_CACHE_STASHING
170 /* set stash id to (coreID) * 2 + 32 + L2 (1) */
175 lis r3,CONFIG_SYS_INIT_L2CSR0@h
176 ori r3,r3,CONFIG_SYS_INIT_L2CSR0@l
181 andis. r1,r3,L2CSR0_L2E@h
186 #define EPAPR_MAGIC (0x45504150)
187 #define ENTRY_ADDR_UPPER 0
188 #define ENTRY_ADDR_LOWER 4
189 #define ENTRY_R3_UPPER 8
190 #define ENTRY_R3_LOWER 12
191 #define ENTRY_RESV 16
193 #define ENTRY_R6_UPPER 24
194 #define ENTRY_R6_LOWER 28
195 #define ENTRY_SIZE 32
197 /* setup the entry */
200 stw r0,ENTRY_PIR(r10)
201 stw r3,ENTRY_ADDR_UPPER(r10)
202 stw r8,ENTRY_ADDR_LOWER(r10)
203 stw r3,ENTRY_R3_UPPER(r10)
204 stw r4,ENTRY_R3_LOWER(r10)
205 stw r3,ENTRY_R6_UPPER(r10)
206 stw r3,ENTRY_R6_LOWER(r10)
208 /* load r13 with the address of the 'bootpg' in SDRAM */
209 lis r13,toreset(__bootpg_addr)@h
210 ori r13,r13,toreset(__bootpg_addr)@l
213 /* setup mapping for AS = 1, and jump there */
214 lis r11,(MAS0_TLBSEL(1)|MAS0_ESEL(1))@h
216 lis r11,(MAS1_VALID|MAS1_IPROT)@h
217 ori r11,r11,(MAS1_TS|MAS1_TSIZE(BOOKE_PAGESZ_4K))@l
219 oris r11,r13,(MAS2_I|MAS2_G)@h
220 ori r11,r13,(MAS2_I|MAS2_G)@l
222 oris r11,r13,(MAS3_SX|MAS3_SW|MAS3_SR)@h
223 ori r11,r13,(MAS3_SX|MAS3_SW|MAS3_SR)@l
230 * OR in 0xfff to create a mask of the bootpg SDRAM address. We use
231 * this mask to fixup the cpu spin table and the address that we want
232 * to jump to, eg change them from 0xfffffxxx to 0x7ffffxxx if the
233 * bootpg is at 0x7ffff000 in SDRAM.
241 ori r12,r13,MSR_IS|MSR_DS@l
247 /* spin waiting for addr */
249 lwz r4,ENTRY_ADDR_LOWER(r10)
254 /* setup IVORs to match fixed offsets */
255 #include "fixed_ivor.S"
257 /* get the upper bits of the addr */
258 lwz r11,ENTRY_ADDR_UPPER(r10)
260 /* setup branch addr */
263 /* mark the entry as released */
265 stw r8,ENTRY_ADDR_LOWER(r10)
267 /* mask by ~64M to setup our tlb we will jump to */
270 /* setup r3, r4, r5, r6, r7, r8, r9 */
271 lwz r3,ENTRY_R3_LOWER(r10)
274 lwz r6,ENTRY_R6_LOWER(r10)
275 lis r7,(64*1024*1024)@h
279 /* load up the pir */
280 lwz r0,ENTRY_PIR(r10)
283 stw r0,ENTRY_PIR(r10)
287 * Coming here, we know the cpu has one TLB mapping in TLB1[0]
288 * which maps 0xfffff000-0xffffffff one-to-one. We set up a
289 * second mapping that maps addr 1:1 for 64M, and then we jump to
292 lis r10,(MAS0_TLBSEL(1)|MAS0_ESEL(0))@h
294 lis r10,(MAS1_VALID|MAS1_IPROT)@h
295 ori r10,r10,(MAS1_TSIZE(BOOKE_PAGESZ_64M))@l
297 /* WIMGE = 0b00000 for now */
299 ori r12,r12,(MAS3_SX|MAS3_SW|MAS3_SR)
301 #ifdef CONFIG_ENABLE_36BIT_PHYS
306 /* Now we have another mapping for this page, so we jump to that
313 * Allocate some space for the SDRAM address of the bootpg.
314 * This variable has to be in the boot page so that it can
315 * be accessed by secondary cores when they come out of reset.
321 .align L1_CACHE_SHIFT
324 .space CONFIG_MAX_CPUS*ENTRY_SIZE
326 /* Fill in the empty space. The actual reset vector is
327 * the last word of the page */
328 __secondary_start_code_end:
329 .space 4092 - (__secondary_start_code_end - __secondary_start_page)
330 __secondary_reset_vector:
331 b __secondary_start_page