|
1 // Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies). |
|
2 // All rights reserved. |
|
3 // This component and the accompanying materials are made available |
|
4 // under the terms of the License "Eclipse Public License v1.0" |
|
5 // which accompanies this distribution, and is available |
|
6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
7 // |
|
8 // Initial Contributors: |
|
9 // Nokia Corporation - initial contribution. |
|
10 // |
|
11 // Contributors: |
|
12 // |
|
13 // Description: |
|
14 // e32\nkernsmp\x86\nccpu.cpp |
|
15 // |
|
16 // |
|
17 |
|
18 #include <x86.h> |
|
19 #include <apic.h> |
|
20 |
|
21 |
|
22 const TLinAddr KWarmResetTrampolineAddr = 0x467; |
|
23 |
|
24 TLinAddr ApTrampolinePage = 0; // overridden in multiple memory model with linear address |
|
25 |
|
26 extern "C" void nanowait(TUint32 aNanoseconds); |
|
27 void cmos_write(TUint32 val, TUint32 addr); |
|
28 void SetupApInitInfo(volatile SApInitInfo&); |
|
29 void _ApMain(); |
|
30 |
|
31 TInt WakeAP(TInt aAPICID) |
|
32 { |
|
33 __KTRACE_OPT(KBOOT,DEBUGPRINT("WakeAP %d", aAPICID)); |
|
34 read_apic_reg(SIVR); |
|
35 write_apic_reg(ESR, 0); |
|
36 read_apic_reg(ESR); |
|
37 |
|
38 __KTRACE_OPT(KBOOT,DEBUGPRINT("Asserting INIT")); |
|
39 |
|
40 //Turn INIT on target chip |
|
41 write_apic_reg(ICRH, aAPICID<<24); |
|
42 |
|
43 // Send IPI |
|
44 write_apic_reg(ICRL, 0xC500); |
|
45 |
|
46 __KTRACE_OPT(KBOOT,DEBUGPRINT("Waiting for send to finish...")); |
|
47 TInt timeout = 0; |
|
48 TUint32 send_status; |
|
49 TUint32 accept_status; |
|
50 do { |
|
51 __KTRACE_OPT(KBOOT,DEBUGPRINT("+")); |
|
52 nanowait(100000); |
|
53 send_status = read_apic_reg(ICRL) & 0x1000; |
|
54 } while (send_status && (++timeout < 1000)); |
|
55 |
|
56 nanowait(10000000); |
|
57 |
|
58 __KTRACE_OPT(KBOOT,DEBUGPRINT("Deasserting INIT")); |
|
59 |
|
60 // Target chip |
|
61 write_apic_reg(ICRH, aAPICID<<24); |
|
62 |
|
63 // Send IPI |
|
64 write_apic_reg(ICRL, 0x8500); |
|
65 |
|
66 __KTRACE_OPT(KBOOT,DEBUGPRINT("Waiting for send to finish...")); |
|
67 timeout = 0; |
|
68 do { |
|
69 __KTRACE_OPT(KBOOT,DEBUGPRINT("+")); |
|
70 nanowait(100000); |
|
71 send_status = read_apic_reg(ICRL) & 0x1000; |
|
72 } while (send_status && (++timeout < 1000)); |
|
73 |
|
74 /* |
|
75 * Should we send STARTUP IPIs ? |
|
76 * |
|
77 * Determine this based on the APIC version. |
|
78 * If we don't have an integrated APIC, don't send the STARTUP IPIs. |
|
79 */ |
|
80 // if (APIC_INTEGRATED(apic_version[phys_apicid])) |
|
81 TInt num_starts = 2; |
|
82 // else |
|
83 // num_starts = 0; |
|
84 |
|
85 // Run STARTUP IPI loop. |
|
86 // maxlvt = get_maxlvt(); |
|
87 |
|
88 TInt j; |
|
89 for (j = 1; j <= num_starts; j++) |
|
90 { |
|
91 __KTRACE_OPT(KBOOT,DEBUGPRINT("Sending STARTUP %d",j)); |
|
92 read_apic_reg(SIVR); |
|
93 write_apic_reg(ESR, 0); |
|
94 read_apic_reg(ESR); |
|
95 |
|
96 // target chip |
|
97 write_apic_reg(ICRH, aAPICID<<24); |
|
98 |
|
99 // send startup IPI |
|
100 write_apic_reg(ICRL, (0x600 | (KApBootPage>>12))); |
|
101 |
|
102 // give other CPU time to accept it |
|
103 nanowait(300000); |
|
104 |
|
105 __KTRACE_OPT(KBOOT,DEBUGPRINT("Waiting for send to finish...")); |
|
106 timeout = 0; |
|
107 do { |
|
108 __KTRACE_OPT(KBOOT,DEBUGPRINT("+")); |
|
109 nanowait(100000); |
|
110 send_status = read_apic_reg(ICRL) & 0x1000; |
|
111 } while (send_status && (++timeout < 1000)); |
|
112 |
|
113 // give other CPU time to accept it |
|
114 nanowait(300000); |
|
115 |
|
116 /* |
|
117 * Due to the Pentium erratum 3AP. |
|
118 */ |
|
119 // if (maxlvt > 3) { |
|
120 // read_apic_reg(APIC_SPIV); |
|
121 // write_apic_reg(APIC_ESR, 0); |
|
122 // } |
|
123 accept_status = (read_apic_reg(ESR) & 0xEF); |
|
124 if (send_status || accept_status) |
|
125 break; |
|
126 } |
|
127 __KTRACE_OPT(KBOOT,DEBUGPRINT("After startup")); |
|
128 |
|
129 if (send_status) |
|
130 __KTRACE_OPT(KBOOT,DEBUGPRINT("APIC never delivered???")); |
|
131 if (accept_status) |
|
132 __KTRACE_OPT(KBOOT,DEBUGPRINT("APIC delivery error %x", accept_status)); |
|
133 |
|
134 return (send_status | accept_status); |
|
135 } |
|
136 |
|
137 |
|
138 |
|
139 TInt NKern::BootAP(volatile SAPBootInfo* aInfo) |
|
140 { |
|
141 __KTRACE_OPT(KBOOT,DEBUGPRINT("NKern::BootAP %08x %08x+%x", aInfo->iCpu, aInfo->iInitStackBase, aInfo->iInitStackSize)); |
|
142 |
|
143 cmos_write(0xa, 0xf); |
|
144 |
|
145 TUint8* t = (TUint8*)(KWarmResetTrampolineAddr + ApTrampolinePage); |
|
146 TUint cs = KApBootPage>>4; |
|
147 *t++ = 0; // IP low |
|
148 *t++ = 0; // IP high |
|
149 *t++ = (TUint8)cs; |
|
150 *t++ = cs>>8; |
|
151 |
|
152 volatile SApInitInfo& a = *(volatile SApInitInfo*)KApBootPage; |
|
153 TCpuPages& cp=X86::CpuPage(); |
|
154 SetupApInitInfo(a); |
|
155 memcpy((TAny*)a.iTempGdt, cp.iGdt, sizeof(cp.iGdt)); |
|
156 a.iTempGdtr = TUint64(KApBootPage + _FOFF(SApInitInfo,iTempGdt))<<16 | TUint64(KSmpGdtSize*sizeof(SX86Des)-1); |
|
157 a.iRgs.iCs = RING0_CS; |
|
158 a.iRgs.iEip = (TLinAddr)&_ApMain; |
|
159 a.iBootFlag = 0; |
|
160 a.iBootFlag2 = 0; |
|
161 a.iLinAddr = (TLinAddr)&a; |
|
162 |
|
163 a.iStackBase = aInfo->iInitStackBase; |
|
164 a.iStackSize = aInfo->iInitStackSize; |
|
165 a.iRgs.iEsp = a.iStackBase + a.iStackSize; |
|
166 a.iExtra = (TAny*)aInfo; |
|
167 |
|
168 TInt r = WakeAP(aInfo->iCpu); |
|
169 if (r!=0) |
|
170 return KErrGeneral; |
|
171 |
|
172 TInt timeout = 500; |
|
173 while (--timeout) |
|
174 { |
|
175 nanowait(1000000); |
|
176 if (a.iBootFlag == KBootFlagMagic-1) |
|
177 break; |
|
178 __chill(); |
|
179 } |
|
180 __KTRACE_OPT(KBOOT, DEBUGPRINT("iBootFlag=%08x",a.iBootFlag)); |
|
181 if (timeout==0) |
|
182 return KErrTimedOut; |
|
183 |
|
184 __e32_atomic_add_ord32(&a.iBootFlag, TUint32(-1)); |
|
185 |
|
186 NKern::DisableAllInterrupts(); |
|
187 while (a.iBootFlag2==0) |
|
188 {} |
|
189 __e32_io_completion_barrier(); |
|
190 a.iBootFlag2 = 2; |
|
191 __e32_io_completion_barrier(); |
|
192 a.iBPTimestamp = X86::Timestamp(); |
|
193 __e32_io_completion_barrier(); |
|
194 while (a.iBootFlag2==2) |
|
195 {} |
|
196 __e32_io_completion_barrier(); |
|
197 NKern::EnableAllInterrupts(); |
|
198 |
|
199 return KErrNone; |
|
200 } |
|
201 |
|
202 void InitAPTimestamp(SNThreadCreateInfo&) |
|
203 { |
|
204 volatile SApInitInfo& a = *(volatile SApInitInfo*)KApBootPage; |
|
205 NKern::DisableAllInterrupts(); |
|
206 a.iBootFlag2 = 1; |
|
207 __e32_io_completion_barrier(); |
|
208 while (a.iBootFlag2==1) |
|
209 {} |
|
210 __e32_io_completion_barrier(); |
|
211 a.iAPTimestamp = X86::Timestamp(); |
|
212 __e32_io_completion_barrier(); |
|
213 TUint64 bpt = a.iBPTimestamp; |
|
214 TUint64 apt = a.iAPTimestamp; |
|
215 TUint64 delta = bpt - apt; |
|
216 TSubScheduler& ss = SubScheduler(); |
|
217 ss.iLastTimestamp64 += delta; |
|
218 *(TUint64*)&ss.i_TimestampOffset = delta; |
|
219 __KTRACE_OPT(KBOOT,DEBUGPRINT("APT=0x%lx BPT=0x%lx Delta=0x%lx", apt, bpt, delta)); |
|
220 __e32_io_completion_barrier(); |
|
221 a.iBootFlag2 = 3; |
|
222 NKern::EnableAllInterrupts(); |
|
223 } |
|
224 |
|
225 |
|
226 |