Annotation of src/sys/arch/arm/arm32/arm32_boot.c, Revision 1.17
1.17 ! skrll 1: /* $NetBSD: arm32_boot.c,v 1.16 2015/05/17 05:34:53 matt Exp $ */
1.1 matt 2:
3: /*
4: * Copyright (c) 2002, 2003, 2005 Genetec Corporation. All rights reserved.
5: * Written by Hiroyuki Bessho for Genetec Corporation.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: * 3. The name of Genetec Corporation may not be used to endorse or
16: * promote products derived from this software without specific prior
17: * written permission.
18: *
19: * THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND
20: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GENETEC CORPORATION
23: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29: * POSSIBILITY OF SUCH DAMAGE.
30: *
31: * Copyright (c) 2001 Wasabi Systems, Inc.
32: * All rights reserved.
33: *
34: * Written by Jason R. Thorpe for Wasabi Systems, Inc.
35: *
36: * Redistribution and use in source and binary forms, with or without
37: * modification, are permitted provided that the following conditions
38: * are met:
39: * 1. Redistributions of source code must retain the above copyright
40: * notice, this list of conditions and the following disclaimer.
41: * 2. Redistributions in binary form must reproduce the above copyright
42: * notice, this list of conditions and the following disclaimer in the
43: * documentation and/or other materials provided with the distribution.
44: * 3. All advertising materials mentioning features or use of this software
45: * must display the following acknowledgement:
46: * This product includes software developed for the NetBSD Project by
47: * Wasabi Systems, Inc.
48: * 4. The name of Wasabi Systems, Inc. may not be used to endorse
49: * or promote products derived from this software without specific prior
50: * written permission.
51: *
52: * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
53: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
54: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
55: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
56: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
57: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
58: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
59: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
60: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
61: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
62: * POSSIBILITY OF SUCH DAMAGE.
63: *
64: * Copyright (c) 1997,1998 Mark Brinicombe.
65: * Copyright (c) 1997,1998 Causality Limited.
66: * All rights reserved.
67: *
68: * Redistribution and use in source and binary forms, with or without
69: * modification, are permitted provided that the following conditions
70: * are met:
71: * 1. Redistributions of source code must retain the above copyright
72: * notice, this list of conditions and the following disclaimer.
73: * 2. Redistributions in binary form must reproduce the above copyright
74: * notice, this list of conditions and the following disclaimer in the
75: * documentation and/or other materials provided with the distribution.
76: * 3. All advertising materials mentioning features or use of this software
77: * must display the following acknowledgement:
78: * This product includes software developed by Mark Brinicombe
79: * for the NetBSD Project.
80: * 4. The name of the company nor the name of the author may be used to
81: * endorse or promote products derived from this software without specific
82: * prior written permission.
83: *
84: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
85: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
86: * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
87: * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
88: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
89: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
90: * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
91: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
92: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
93: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
94: * SUCH DAMAGE.
95: *
96: * Copyright (c) 2007 Microsoft
97: * All rights reserved.
98: *
99: * Redistribution and use in source and binary forms, with or without
100: * modification, are permitted provided that the following conditions
101: * are met:
102: * 1. Redistributions of source code must retain the above copyright
103: * notice, this list of conditions and the following disclaimer.
104: * 2. Redistributions in binary form must reproduce the above copyright
105: * notice, this list of conditions and the following disclaimer in the
106: * documentation and/or other materials provided with the distribution.
107: * 3. All advertising materials mentioning features or use of this software
108: * must display the following acknowledgement:
109: * This product includes software developed by Microsoft
110: *
111: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
112: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
113: * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
114: * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTERS BE LIABLE FOR ANY DIRECT,
115: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
116: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
117: * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
118: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
119: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
120: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
121: * SUCH DAMAGE.
122: */
123:
124: #include <sys/cdefs.h>
125:
1.17 ! skrll 126: __KERNEL_RCSID(1, "$NetBSD: arm32_boot.c,v 1.16 2015/05/17 05:34:53 matt Exp $");
1.3 skrll 127:
128: #include "opt_ddb.h"
129: #include "opt_kgdb.h"
1.9 skrll 130: #include "opt_multiprocessor.h"
1.1 matt 131:
132: #include <sys/param.h>
133: #include <sys/reboot.h>
134: #include <sys/cpu.h>
135: #include <sys/intr.h>
1.7 matt 136: #include <sys/atomic.h>
137: #include <sys/device.h>
1.1 matt 138:
139: #include <uvm/uvm_extern.h>
140:
1.5 matt 141: #include <arm/locore.h>
1.1 matt 142: #include <arm/undefined.h>
143: #include <arm/arm32/machdep.h>
144:
145: #include <machine/db_machdep.h>
146: #include <ddb/db_extern.h>
147:
148: #include <machine/bootconfig.h>
149:
1.3 skrll 150: #ifdef KGDB
151: #include <sys/kgdb.h>
152: #endif
153:
1.11 jmcneill 154: #ifdef MULTIPROCESSOR
155: static kmutex_t cpu_hatch_lock;
156: #endif
157:
1.1 matt 158: vaddr_t
159: initarm_common(vaddr_t kvm_base, vsize_t kvm_size,
160: const struct boot_physmem *bp, size_t nbp)
161: {
162: struct bootmem_info * const bmi = &bootmem_info;
163:
164: #ifdef VERBOSE_INIT_ARM
165: printf("nfreeblocks = %u, free_pages = %d (%#x)\n",
166: bmi->bmi_nfreeblocks, bmi->bmi_freepages,
167: bmi->bmi_freepages);
168: #endif
169:
170: /*
171: * Moved from cpu_startup() as data_abort_handler() references
172: * this during uvm init.
173: */
174: uvm_lwp_setuarea(&lwp0, kernelstack.pv_va);
175:
176: #ifdef VERBOSE_INIT_ARM
177: printf("bootstrap done.\n");
178: #endif
179:
1.4 matt 180: #ifdef VERBOSE_INIT_ARM
181: printf("vectors");
182: #endif
1.1 matt 183: arm32_vector_init(systempage.pv_va, ARM_VEC_ALL);
1.4 matt 184: #ifdef VERBOSE_INIT_ARM
185: printf(" %#"PRIxVADDR"\n", vector_page);
186: #endif
1.1 matt 187:
188: /*
189: * Pages were allocated during the secondary bootstrap for the
190: * stacks for different CPU modes.
191: * We must now set the r13 registers in the different CPU modes to
192: * point to these stacks.
193: * Since the ARM stacks use STMFD etc. we must set r13 to the top end
194: * of the stack memory.
195: */
196: #ifdef VERBOSE_INIT_ARM
197: printf("init subsystems: stacks ");
198: #endif
199: set_stackptr(PSR_FIQ32_MODE,
200: fiqstack.pv_va + FIQ_STACK_SIZE * PAGE_SIZE);
201: set_stackptr(PSR_IRQ32_MODE,
202: irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE);
203: set_stackptr(PSR_ABT32_MODE,
204: abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE);
205: set_stackptr(PSR_UND32_MODE,
206: undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE);
207:
208: /*
209: * Well we should set a data abort handler.
210: * Once things get going this will change as we will need a proper
211: * handler.
212: * Until then we will use a handler that just panics but tells us
213: * why.
214: * Initialisation of the vectors will just panic on a data abort.
215: * This just fills in a slightly better one.
216: */
217: #ifdef VERBOSE_INIT_ARM
218: printf("vectors ");
219: #endif
220: data_abort_handler_address = (u_int)data_abort_handler;
221: prefetch_abort_handler_address = (u_int)prefetch_abort_handler;
222: undefined_handler_address = (u_int)undefinedinstruction_bounce;
223:
224: /* Initialise the undefined instruction handlers */
225: #ifdef VERBOSE_INIT_ARM
226: printf("undefined ");
227: #endif
228: undefined_init();
229:
230: /* Load memory into UVM. */
231: #ifdef VERBOSE_INIT_ARM
232: printf("page ");
233: #endif
234: uvm_setpagesize(); /* initialize PAGE_SIZE-dependent variables */
235:
236: #ifdef VERBOSE_INIT_ARM
237: printf("pmap_physload ");
238: #endif
1.2 matt 239: KASSERT(bp != NULL || nbp == 0);
240: KASSERT(bp == NULL || nbp != 0);
1.1 matt 241:
1.2 matt 242: for (size_t i = 0; i < bmi->bmi_nfreeblocks; i++) {
243: pv_addr_t * const pv = &bmi->bmi_freeblocks[i];
244: paddr_t start = atop(pv->pv_pa);
245: const paddr_t end = start + atop(pv->pv_size);
246:
247: while (start < end) {
248: int vm_freelist = VM_FREELIST_DEFAULT;
249: paddr_t segend = end;
250: /*
251: * This assumes the bp list is sorted in ascending
252: * order.
253: */
254: for (size_t j = 0; j < nbp; j++) {
255: paddr_t bp_start = bp[j].bp_start;
256: paddr_t bp_end = bp_start + bp[j].bp_pages;
257: if (start < bp_start) {
258: if (segend > bp_start) {
259: segend = bp_start;
260: }
261: break;
262: }
263: if (start < bp_end) {
264: if (segend > bp_end) {
265: segend = bp_end;
266: }
267: vm_freelist = bp[j].bp_freelist;
268: break;
269: }
270: }
1.17 ! skrll 271:
1.2 matt 272: uvm_page_physload(start, segend, start, segend,
273: vm_freelist);
274: start = segend;
1.1 matt 275: }
276: }
277:
278: /* Boot strap pmap telling it where the kernel page table is */
279: #ifdef VERBOSE_INIT_ARM
280: printf("pmap ");
281: #endif
282: pmap_bootstrap(kvm_base, kvm_base + kvm_size);
1.17 ! skrll 283:
1.1 matt 284: #ifdef __HAVE_MEMORY_DISK__
285: md_root_setconf(memory_disk, sizeof memory_disk);
286: #endif
287:
288: #ifdef BOOTHOWTO
289: boothowto |= BOOTHOWTO;
290: #endif
291:
292: #ifdef KGDB
293: if (boothowto & RB_KDB) {
294: kgdb_debug_init = 1;
295: kgdb_connect(1);
296: }
297: #endif
298:
299: #ifdef DDB
300: db_machine_init();
301: ddb_init(0, NULL, NULL);
302:
303: if (boothowto & RB_KDB)
304: Debugger();
305: #endif
306:
1.11 jmcneill 307: #ifdef MULTIPROCESSOR
1.12 jakllsch 308: mutex_init(&cpu_hatch_lock, MUTEX_DEFAULT, IPL_NONE);
1.11 jmcneill 309: #endif
310:
1.1 matt 311: #ifdef VERBOSE_INIT_ARM
312: printf("done.\n");
313: #endif
314:
315: /* We return the new stack pointer address */
316: return kernelstack.pv_va + USPACE_SVC_STACK_TOP;
317: }
318:
319: #ifdef MULTIPROCESSOR
320: /*
321: * When we are called, the MMU and caches are on and we are running on the stack
322: * of the idlelwp for this cpu.
323: */
324: void
325: cpu_hatch(struct cpu_info *ci, cpuid_t cpuid, void (*md_cpu_init)(struct cpu_info *))
326: {
327: KASSERT(cpu_index(ci) == cpuid);
328:
329: /*
330: * Raise our IPL to the max
331: */
332: splhigh();
333:
1.16 matt 334: #ifdef CPU_CORTEX
1.17 ! skrll 335: #if 0
1.16 matt 336: KASSERTMSG(armreg_auxctl_read() & CORTEXA9_AUXCTL_SMP, "auxctl %#x",
337: armreg_auxctl_read());
338: #endif
1.17 ! skrll 339: #endif
1.16 matt 340:
1.7 matt 341: #ifdef VERBOSE_INIT_ARM
1.1 matt 342: printf("%s(%s): ", __func__, ci->ci_data.cpu_name);
1.7 matt 343: #endif
344: uint32_t mpidr = armreg_mpidr_read();
345: if (mpidr & MPIDR_MT) {
346: ci->ci_data.cpu_smt_id = mpidr & MPIDR_AFF0;
347: ci->ci_data.cpu_core_id = mpidr & MPIDR_AFF1;
348: ci->ci_data.cpu_package_id = mpidr & MPIDR_AFF2;
349: } else {
350: ci->ci_data.cpu_core_id = mpidr & MPIDR_AFF0;
351: ci->ci_data.cpu_package_id = mpidr & MPIDR_AFF1;
352: }
1.1 matt 353:
354: /*
355: * Make sure we have the right vector page.
356: */
1.7 matt 357: #ifdef VERBOSE_INIT_ARM
1.1 matt 358: printf(" vectors");
1.7 matt 359: #endif
1.1 matt 360: arm32_vector_init(systempage.pv_va, ARM_VEC_ALL);
361:
362: /*
1.7 matt 363: * Initialize the stack for each mode (we are already running on the
364: * SVC32 stack of the idlelwp).
1.1 matt 365: */
1.7 matt 366: #ifdef VERBOSE_INIT_ARM
1.1 matt 367: printf(" stacks");
1.7 matt 368: #endif
1.1 matt 369: set_stackptr(PSR_FIQ32_MODE,
1.10 matt 370: fiqstack.pv_va + (cpu_index(ci) + 1) * FIQ_STACK_SIZE * PAGE_SIZE);
1.1 matt 371: set_stackptr(PSR_IRQ32_MODE,
1.10 matt 372: irqstack.pv_va + (cpu_index(ci) + 1) * IRQ_STACK_SIZE * PAGE_SIZE);
1.1 matt 373: set_stackptr(PSR_ABT32_MODE,
1.10 matt 374: abtstack.pv_va + (cpu_index(ci) + 1) * ABT_STACK_SIZE * PAGE_SIZE);
1.1 matt 375: set_stackptr(PSR_UND32_MODE,
1.10 matt 376: undstack.pv_va + (cpu_index(ci) + 1) * UND_STACK_SIZE * PAGE_SIZE);
1.1 matt 377:
1.6 matt 378: ci->ci_lastlwp = NULL;
379: ci->ci_pmap_lastuser = NULL;
380: #ifdef ARM_MMU_EXTENDED
1.7 matt 381: #ifdef VERBOSE_INIT_ARM
1.6 matt 382: printf(" tlb");
1.7 matt 383: #endif
1.1 matt 384: /*
1.6 matt 385: * Attach to the tlb.
1.1 matt 386: */
1.6 matt 387: ci->ci_pmap_cur = pmap_kernel();
388: ci->ci_pmap_asid_cur = KERNEL_PID;
1.1 matt 389: #endif
1.6 matt 390:
1.1 matt 391: #ifdef CPU_CORTEX
392: if (CPU_ID_CORTEX_P(ci->ci_arm_cpuid)) {
393: /*
394: * Start and reset the PMC Cycle Counter.
1.17 ! skrll 395: */
1.1 matt 396: armreg_pmcr_write(ARM11_PMCCTL_E|ARM11_PMCCTL_P|ARM11_PMCCTL_C);
397: armreg_pmcntenset_write(CORTEX_CNTENS_C);
398: }
399: #endif
400:
1.11 jmcneill 401: mutex_enter(&cpu_hatch_lock);
402:
1.7 matt 403: aprint_naive("%s", device_xname(ci->ci_dev));
404: aprint_normal("%s", device_xname(ci->ci_dev));
405: identify_arm_cpu(ci->ci_dev, ci);
406: #ifdef VERBOSE_INIT_ARM
407: printf(" vfp");
408: #endif
409: vfp_attach(ci);
410:
1.11 jmcneill 411: mutex_exit(&cpu_hatch_lock);
412:
1.7 matt 413: #ifdef VERBOSE_INIT_ARM
1.1 matt 414: printf(" interrupts");
1.7 matt 415: #endif
1.1 matt 416: /*
417: * Let the interrupts do what they need to on this CPU.
418: */
419: intr_cpu_init(ci);
420:
1.7 matt 421: #ifdef VERBOSE_INIT_ARM
1.1 matt 422: printf(" md(%p)", md_cpu_init);
1.7 matt 423: #endif
1.1 matt 424: if (md_cpu_init != NULL)
425: (*md_cpu_init)(ci);
426:
1.7 matt 427: #ifdef VERBOSE_INIT_ARM
428: printf(" done!\n");
1.1 matt 429: #endif
1.7 matt 430: atomic_and_32(&arm_cpu_mbox, ~(1 << cpuid));
1.8 ryo 431: membar_producer();
1.7 matt 432: __asm __volatile("sev; sev; sev");
1.1 matt 433: }
434: #endif /* MULTIPROCESSOR */
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