Annotation of src/sys/arch/arm/arm32/arm32_boot.c, Revision 1.44
1.44 ! skrll 1: /* $NetBSD: arm32_boot.c,v 1.43 2021/06/03 07:06:22 skrll 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>
1.44 ! skrll 125: __KERNEL_RCSID(1, "$NetBSD: arm32_boot.c,v 1.43 2021/06/03 07:06:22 skrll Exp $");
1.3 skrll 126:
1.20 skrll 127: #include "opt_arm_debug.h"
1.21 skrll 128: #include "opt_cputypes.h"
1.3 skrll 129: #include "opt_ddb.h"
130: #include "opt_kgdb.h"
1.9 skrll 131: #include "opt_multiprocessor.h"
1.1 matt 132:
133: #include <sys/param.h>
1.38 skrll 134:
1.39 skrll 135: #include <sys/asan.h>
1.38 skrll 136: #include <sys/atomic.h>
1.1 matt 137: #include <sys/cpu.h>
1.38 skrll 138: #include <sys/device.h>
1.1 matt 139: #include <sys/intr.h>
1.38 skrll 140: #include <sys/reboot.h>
1.1 matt 141:
142: #include <uvm/uvm_extern.h>
143:
1.5 matt 144: #include <arm/locore.h>
1.1 matt 145: #include <arm/undefined.h>
146: #include <arm/arm32/machdep.h>
147:
148: #include <machine/db_machdep.h>
149: #include <ddb/db_extern.h>
150:
151: #include <machine/bootconfig.h>
152:
1.3 skrll 153: #ifdef KGDB
154: #include <sys/kgdb.h>
155: #endif
156:
1.20 skrll 157: #ifdef VERBOSE_INIT_ARM
158: #define VPRINTF(...) printf(__VA_ARGS__)
159: #else
1.23 skrll 160: #define VPRINTF(...) __nothing
1.20 skrll 161: #endif
162:
1.1 matt 163: vaddr_t
164: initarm_common(vaddr_t kvm_base, vsize_t kvm_size,
165: const struct boot_physmem *bp, size_t nbp)
166: {
167: struct bootmem_info * const bmi = &bootmem_info;
168:
1.20 skrll 169: VPRINTF("nfreeblocks = %u, free_pages = %d (%#x)\n",
1.1 matt 170: bmi->bmi_nfreeblocks, bmi->bmi_freepages,
171: bmi->bmi_freepages);
172:
173: /*
174: * Moved from cpu_startup() as data_abort_handler() references
175: * this during uvm init.
176: */
177: uvm_lwp_setuarea(&lwp0, kernelstack.pv_va);
178:
1.19 skrll 179: struct lwp * const l = &lwp0;
180: struct pcb * const pcb = lwp_getpcb(l);
181:
182: /* Zero out the PCB. */
183: memset(pcb, 0, sizeof(*pcb));
184:
185: pcb->pcb_ksp = uvm_lwp_getuarea(l) + USPACE_SVC_STACK_TOP;
186: pcb->pcb_ksp -= sizeof(struct trapframe);
187:
188: struct trapframe * tf = (struct trapframe *)pcb->pcb_ksp;
189:
190: /* Zero out the trapframe. */
191: memset(tf, 0, sizeof(*tf));
192: lwp_settrapframe(l, tf);
193:
194: tf->tf_spsr = PSR_USR32_MODE;
1.41 rin 195: #ifdef _ARM_ARCH_BE8
196: tf->tf_spsr |= PSR_E_BIT;
1.19 skrll 197: #endif
198:
1.20 skrll 199: VPRINTF("bootstrap done.\n");
1.1 matt 200:
1.20 skrll 201: VPRINTF("vectors");
1.1 matt 202: arm32_vector_init(systempage.pv_va, ARM_VEC_ALL);
1.20 skrll 203: VPRINTF(" %#"PRIxVADDR"\n", vector_page);
1.1 matt 204:
205: /*
206: * Pages were allocated during the secondary bootstrap for the
207: * stacks for different CPU modes.
208: * We must now set the r13 registers in the different CPU modes to
209: * point to these stacks.
210: * Since the ARM stacks use STMFD etc. we must set r13 to the top end
211: * of the stack memory.
212: */
1.20 skrll 213: VPRINTF("init subsystems: stacks ");
1.1 matt 214: set_stackptr(PSR_FIQ32_MODE,
215: fiqstack.pv_va + FIQ_STACK_SIZE * PAGE_SIZE);
216: set_stackptr(PSR_IRQ32_MODE,
217: irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE);
218: set_stackptr(PSR_ABT32_MODE,
219: abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE);
220: set_stackptr(PSR_UND32_MODE,
221: undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE);
222:
223: /*
224: * Well we should set a data abort handler.
225: * Once things get going this will change as we will need a proper
226: * handler.
227: * Until then we will use a handler that just panics but tells us
228: * why.
229: * Initialisation of the vectors will just panic on a data abort.
230: * This just fills in a slightly better one.
231: */
1.20 skrll 232: VPRINTF("vectors ");
1.1 matt 233: data_abort_handler_address = (u_int)data_abort_handler;
234: prefetch_abort_handler_address = (u_int)prefetch_abort_handler;
235: undefined_handler_address = (u_int)undefinedinstruction_bounce;
236:
237: /* Initialise the undefined instruction handlers */
1.20 skrll 238: VPRINTF("undefined ");
1.1 matt 239: undefined_init();
240:
1.44 ! skrll 241: #ifdef FPU_VFP
! 242: /* vfp_detect uses an undefined handler */
! 243: VPRINTF("vfp ");
! 244: vfp_detect(curcpu());
! 245: #endif
! 246:
1.1 matt 247: /* Load memory into UVM. */
1.20 skrll 248: VPRINTF("page ");
1.18 cherry 249: uvm_md_init();
1.1 matt 250:
1.24 skrll 251: VPRINTF("pmap_physload\n");
1.2 matt 252: KASSERT(bp != NULL || nbp == 0);
253: KASSERT(bp == NULL || nbp != 0);
1.1 matt 254:
1.2 matt 255: for (size_t i = 0; i < bmi->bmi_nfreeblocks; i++) {
256: pv_addr_t * const pv = &bmi->bmi_freeblocks[i];
257: paddr_t start = atop(pv->pv_pa);
258: const paddr_t end = start + atop(pv->pv_size);
1.24 skrll 259: int vm_freelist = VM_FREELIST_DEFAULT;
1.2 matt 260:
1.24 skrll 261: VPRINTF("block %2zu start %08lx end %08lx", i,
262: pv->pv_pa, pv->pv_pa + pv->pv_size);
263:
264: if (!bp) {
265: VPRINTF("... loading in freelist %d\n", vm_freelist);
266: uvm_page_physload(start, end, start, end, VM_FREELIST_DEFAULT);
267: continue;
268: }
1.27 skrll 269: VPRINTF("\n");
1.43 skrll 270:
271: /*
272: * This assumes the bp list is sorted in ascending
273: * order.
274: */
1.24 skrll 275: paddr_t segend = end;
1.43 skrll 276: for (size_t j = 0; j < nbp && start < end; j++) {
1.24 skrll 277: paddr_t bp_start = bp[j].bp_start;
278: paddr_t bp_end = bp_start + bp[j].bp_pages;
279:
1.27 skrll 280: VPRINTF(" bp %2zu start %08lx end %08lx\n",
1.24 skrll 281: j, ptoa(bp_start), ptoa(bp_end));
1.43 skrll 282:
1.24 skrll 283: KASSERT(bp_start < bp_end);
1.43 skrll 284: if (start >= bp_end || segend < bp_start)
1.24 skrll 285: continue;
286:
287: if (start < bp_start)
288: start = bp_start;
289:
290: if (start < bp_end) {
291: if (segend > bp_end) {
292: segend = bp_end;
1.2 matt 293: }
1.24 skrll 294: vm_freelist = bp[j].bp_freelist;
295:
296: VPRINTF(" start %08lx end %08lx"
1.27 skrll 297: "... loading in freelist %d\n", ptoa(start),
1.25 skrll 298: ptoa(segend), vm_freelist);
1.43 skrll 299:
300: uvm_page_physload(start, segend, start, segend,
301: vm_freelist);
302:
1.24 skrll 303: start = segend;
304: segend = end;
1.2 matt 305: }
1.1 matt 306: }
307: }
308:
1.40 skrll 309: /*
310: * Bootstrap pmap telling it where the managed kernel virtual memory
311: * is.
312: */
1.20 skrll 313: VPRINTF("pmap ");
1.1 matt 314: pmap_bootstrap(kvm_base, kvm_base + kvm_size);
1.17 skrll 315:
1.39 skrll 316: kasan_init();
317:
1.1 matt 318: #ifdef __HAVE_MEMORY_DISK__
319: md_root_setconf(memory_disk, sizeof memory_disk);
320: #endif
321:
322: #ifdef BOOTHOWTO
323: boothowto |= BOOTHOWTO;
324: #endif
325:
326: #ifdef KGDB
327: if (boothowto & RB_KDB) {
328: kgdb_debug_init = 1;
329: kgdb_connect(1);
330: }
331: #endif
332:
333: #ifdef DDB
334: db_machine_init();
335: ddb_init(0, NULL, NULL);
336:
337: if (boothowto & RB_KDB)
338: Debugger();
339: #endif
340:
1.11 jmcneill 341: #ifdef MULTIPROCESSOR
1.33 skrll 342: /*
343: * Ensure BP cache is flushed to memory so that APs start cache
344: * coherency with correct view.
345: */
346: cpu_dcache_wbinv_all();
1.11 jmcneill 347: #endif
348:
1.20 skrll 349: VPRINTF("done.\n");
1.1 matt 350:
351: /* We return the new stack pointer address */
1.19 skrll 352: return pcb->pcb_ksp;
1.1 matt 353: }
354:
355: #ifdef MULTIPROCESSOR
356: /*
357: * When we are called, the MMU and caches are on and we are running on the stack
358: * of the idlelwp for this cpu.
359: */
360: void
1.28 skrll 361: cpu_hatch(struct cpu_info *ci, u_int cpuindex, void (*md_cpu_init)(struct cpu_info *))
1.1 matt 362: {
1.28 skrll 363: KASSERT(cpu_index(ci) == cpuindex);
1.1 matt 364:
365: /*
366: * Raise our IPL to the max
367: */
368: splhigh();
369:
1.28 skrll 370: VPRINTF("%s(%s): ", __func__, cpu_name(ci));
1.44 ! skrll 371: /* mpidr/midr filled in by cpu_init_secondary_processor */
1.29 jmcneill 372:
1.1 matt 373: /*
374: * Make sure we have the right vector page.
375: */
1.20 skrll 376: VPRINTF(" vectors");
1.1 matt 377: arm32_vector_init(systempage.pv_va, ARM_VEC_ALL);
378:
379: /*
1.7 matt 380: * Initialize the stack for each mode (we are already running on the
381: * SVC32 stack of the idlelwp).
1.1 matt 382: */
1.20 skrll 383: VPRINTF(" stacks");
1.1 matt 384: set_stackptr(PSR_FIQ32_MODE,
1.10 matt 385: fiqstack.pv_va + (cpu_index(ci) + 1) * FIQ_STACK_SIZE * PAGE_SIZE);
1.1 matt 386: set_stackptr(PSR_IRQ32_MODE,
1.10 matt 387: irqstack.pv_va + (cpu_index(ci) + 1) * IRQ_STACK_SIZE * PAGE_SIZE);
1.1 matt 388: set_stackptr(PSR_ABT32_MODE,
1.10 matt 389: abtstack.pv_va + (cpu_index(ci) + 1) * ABT_STACK_SIZE * PAGE_SIZE);
1.1 matt 390: set_stackptr(PSR_UND32_MODE,
1.10 matt 391: undstack.pv_va + (cpu_index(ci) + 1) * UND_STACK_SIZE * PAGE_SIZE);
1.1 matt 392:
1.6 matt 393: ci->ci_lastlwp = NULL;
394: ci->ci_pmap_lastuser = NULL;
395: #ifdef ARM_MMU_EXTENDED
1.20 skrll 396: VPRINTF(" tlb");
1.1 matt 397: /*
1.6 matt 398: * Attach to the tlb.
1.1 matt 399: */
1.6 matt 400: ci->ci_pmap_cur = pmap_kernel();
401: ci->ci_pmap_asid_cur = KERNEL_PID;
1.1 matt 402: #endif
1.6 matt 403:
1.1 matt 404: #ifdef CPU_CORTEX
405: if (CPU_ID_CORTEX_P(ci->ci_arm_cpuid)) {
406: /*
407: * Start and reset the PMC Cycle Counter.
1.17 skrll 408: */
1.1 matt 409: armreg_pmcr_write(ARM11_PMCCTL_E|ARM11_PMCCTL_P|ARM11_PMCCTL_C);
410: armreg_pmcntenset_write(CORTEX_CNTENS_C);
411: }
412: #endif
413:
1.24 skrll 414: VPRINTF(" md(%p)", md_cpu_init);
415: if (md_cpu_init != NULL)
416: (*md_cpu_init)(ci);
417:
1.20 skrll 418: VPRINTF(" interrupts");
1.1 matt 419: /*
420: * Let the interrupts do what they need to on this CPU.
421: */
422: intr_cpu_init(ci);
423:
1.24 skrll 424: VPRINTF(" done!\n");
1.37 skrll 425: cpu_clr_mbox(cpuindex);
1.1 matt 426: }
427: #endif /* MULTIPROCESSOR */
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