Annotation of src/sys/arch/ibmnws/ibmnws/machdep.c, Revision 1.9.20.1
1.9.20.1! yamt 1: /* $NetBSD: machdep.c,v 1.9 2007/10/17 19:55:01 garbled Exp $ */
1.1 matt 2:
3: /*
4: * Copyright (C) 1995, 1996 Wolfgang Solfrank.
5: * Copyright (C) 1995, 1996 TooLs GmbH.
6: * All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by TooLs GmbH.
19: * 4. The name of TooLs GmbH may not be used to endorse or promote products
20: * derived from this software without specific prior written permission.
21: *
22: * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
23: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25: * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
27: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
28: * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
29: * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
30: * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
31: * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32: */
33:
1.9 garbled 34: #include <sys/cdefs.h>
1.9.20.1! yamt 35: __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.9 2007/10/17 19:55:01 garbled Exp $");
1.9 garbled 36:
1.1 matt 37: #include "opt_compat_netbsd.h"
38:
39: #include <sys/param.h>
40: #include <sys/buf.h>
41: #include <sys/conf.h>
42: #include <sys/device.h>
43: #include <sys/exec.h>
44: #include <sys/extent.h>
45: #include <sys/kernel.h>
46: #include <sys/malloc.h>
47: #include <sys/mbuf.h>
48: #include <sys/mount.h>
49: #include <sys/msgbuf.h>
50: #include <sys/proc.h>
51: #include <sys/reboot.h>
52: #include <sys/syscallargs.h>
53: #include <sys/syslog.h>
54: #include <sys/systm.h>
55: #include <sys/user.h>
56:
57: #include <uvm/uvm_extern.h>
58:
59: #include <sys/sysctl.h>
60:
61: #include <net/netisr.h>
62:
63: #include <machine/autoconf.h>
64: #include <machine/bus.h>
65: #include <machine/intr.h>
66: #include <machine/pmap.h>
67: #include <machine/powerpc.h>
68: #include <machine/trap.h>
1.2 matt 69:
70: #include <powerpc/oea/bat.h>
1.9 garbled 71: #include <arch/powerpc/pic/picvar.h>
1.9.20.1! yamt 72: #include <arch/powerpc/include/pio.h>
! 73: #include <dev/pci/pcivar.h>
! 74: #include <dev/ic/ibm82660reg.h>
1.1 matt 75:
76: #include <dev/cons.h>
77:
78: void initppc(u_long, u_long, u_int, void *);
79: void dumpsys(void);
80: vaddr_t prep_intr_reg; /* PReP interrupt vector register */
81:
82: #define OFMEMREGIONS 32
83: struct mem_region physmemr[OFMEMREGIONS], availmemr[OFMEMREGIONS];
84:
85: paddr_t avail_end; /* XXX temporary */
1.9 garbled 86: struct pic_ops *isa_pic;
87: int isa_pcmciamask = 0x8b28;
1.1 matt 88:
89: void
1.6 rjs 90: initppc(u_long startkernel, u_long endkernel, u_int args, void *btinfo)
1.1 matt 91: {
92:
1.9.20.1! yamt 93: uint32_t sa, ea, banks;
! 94: u_long memsize = 0;
! 95: pcitag_t tag;
! 96:
1.1 matt 97: /*
1.9.20.1! yamt 98: * Set memory region by reading the memory size from the PCI
! 99: * host bridge.
1.1 matt 100: */
101:
1.9.20.1! yamt 102: tag = genppc_pci_indirect_make_tag(NULL, 0, 0, 0);
! 103:
! 104: out32rb(PCI_MODE1_ADDRESS_REG, tag | IBM_82660_MEM_BANK0_START);
! 105: sa = in32rb(PCI_MODE1_DATA_REG);
! 106:
! 107: out32rb(PCI_MODE1_ADDRESS_REG, tag | IBM_82660_MEM_BANK0_END);
! 108: ea = in32rb(PCI_MODE1_DATA_REG);
! 109:
! 110: /* Which memory banks are enabled? */
! 111: out32rb(PCI_MODE1_ADDRESS_REG, tag | IBM_82660_MEM_BANK_ENABLE);
! 112: banks = in32rb(PCI_MODE1_DATA_REG) & 0xFF;
! 113:
! 114: /* Reset the register for the next call. */
! 115: out32rb(PCI_MODE1_ADDRESS_REG, 0);
! 116:
! 117: if (banks & IBM_82660_MEM_BANK0_ENABLED)
! 118: memsize += IBM_82660_BANK0_ADDR(ea) - IBM_82660_BANK0_ADDR(sa) + 1;
! 119:
! 120: if (banks & IBM_82660_MEM_BANK1_ENABLED)
! 121: memsize += IBM_82660_BANK1_ADDR(ea) - IBM_82660_BANK1_ADDR(sa) + 1;
! 122:
! 123: if (banks & IBM_82660_MEM_BANK2_ENABLED)
! 124: memsize += IBM_82660_BANK2_ADDR(ea) - IBM_82660_BANK2_ADDR(sa) + 1;
! 125:
! 126: if (banks & IBM_82660_MEM_BANK3_ENABLED)
! 127: memsize += IBM_82660_BANK3_ADDR(ea) - IBM_82660_BANK3_ADDR(sa) + 1;
! 128:
! 129: memsize <<= 20;
! 130:
! 131: physmemr[0].start = 0;
! 132: physmemr[0].size = memsize & ~PGOFSET;
! 133: availmemr[0].start = (endkernel + PGOFSET) & ~PGOFSET;
! 134: availmemr[0].size = memsize - availmemr[0].start;
1.1 matt 135:
136: avail_end = physmemr[0].start + physmemr[0].size; /* XXX temporary */
137:
138: /*
139: * Set CPU clock
140: */
141: {
142: extern u_long ticks_per_sec, ns_per_tick;
143:
144: ticks_per_sec = 16666666; /* hardcoded */
145: ns_per_tick = 1000000000 / ticks_per_sec;
146: }
147:
148: /*
149: * boothowto
150: */
151: boothowto = 0; /* XXX - should make this an option */
152:
1.9 garbled 153: prep_initppc(startkernel, endkernel, args);
1.1 matt 154: }
155:
156: /*
157: * Machine dependent startup code.
158: */
159: void
1.6 rjs 160: cpu_startup(void)
1.1 matt 161: {
162: /*
163: * Mapping PReP interrput vector register.
164: */
165: prep_intr_reg = (vaddr_t) mapiodev(PREP_INTR_REG, PAGE_SIZE);
166: if (!prep_intr_reg)
167: panic("startup: no room for interrupt register");
1.9 garbled 168: prep_intr_reg_off = INTR_VECTOR_REG;
1.1 matt 169:
170: /*
171: * Do common startup.
172: */
173: oea_startup("IBM NetworkStation 1000 (8362-XXX)");
174:
1.9.20.1! yamt 175: pic_init();
1.9 garbled 176: isa_pic = setup_prepivr(PIC_IVR_IBM);
177:
178: oea_install_extint(pic_ext_intr);
179:
1.6 rjs 180: /*
1.1 matt 181: * Now allow hardware interrupts.
182: */
183: {
184: int msr;
185:
186: splraise(-1);
1.4 perry 187: __asm volatile ("mfmsr %0; ori %0,%0,%1; mtmsr %0"
1.1 matt 188: : "=r"(msr) : "K"(PSL_EE));
189: }
190:
191: /*
192: * Now safe for bus space allocation to use malloc.
193: */
194: bus_space_mallocok();
195: }
196:
197: /*
198: * Halt or reboot the machine after syncing/dumping according to howto.
199: */
200: void
1.6 rjs 201: cpu_reboot(int howto, char *what)
1.1 matt 202: {
203: static int syncing;
204:
205: if (cold) {
206: howto |= RB_HALT;
207: goto halt_sys;
208: }
209:
210: boothowto = howto;
211: if ((howto & RB_NOSYNC) == 0 && syncing == 0) {
212: syncing = 1;
213: vfs_shutdown(); /* sync */
214: resettodr(); /* set wall clock */
215: }
216:
217: /* Disable intr */
218: splhigh();
219:
220: /* Do dump if requested */
221: if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP)
222: oea_dumpsys();
223:
224: halt_sys:
225: doshutdownhooks();
226:
1.9.20.1! yamt 227: pmf_system_shutdown(boothowto);
! 228:
1.1 matt 229: if (howto & RB_HALT) {
1.9.20.1! yamt 230: aprint_normal("\n");
! 231: aprint_normal("The operating system has halted.\n");
! 232: aprint_normal("Please press any key to reboot.\n\n");
1.1 matt 233: cnpollc(1); /* for proper keyboard command handling */
234: cngetc();
235: cnpollc(0);
236: }
237:
1.9.20.1! yamt 238: aprint_normal("rebooting...\n\n");
1.1 matt 239:
240:
241: {
242: int msr;
243: u_char reg;
244:
1.5 perry 245: __asm volatile("mfmsr %0" : "=r"(msr));
1.1 matt 246: msr |= PSL_IP;
1.5 perry 247: __asm volatile("mtmsr %0" :: "r"(msr));
1.1 matt 248:
249: reg = *(volatile u_char *)(PREP_BUS_SPACE_IO + 0x92);
250: reg &= ~1UL;
251: *(volatile u_char *)(PREP_BUS_SPACE_IO + 0x92) = reg;
252:
1.5 perry 253: __asm volatile("sync; eieio\n");
1.1 matt 254:
255: reg = *(volatile u_char *)(PREP_BUS_SPACE_IO + 0x92);
256: reg |= 1;
257: *(volatile u_char *)(PREP_BUS_SPACE_IO + 0x92) = reg;
258:
1.5 perry 259: __asm volatile("sync; eieio\n");
1.1 matt 260: }
261:
262: for (;;)
263: continue;
264: /* NOTREACHED */
265: }
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