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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/ppc/platforms/pplus.c
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/ppc/platforms/pplus.c')
-rw-r--r--arch/ppc/platforms/pplus.c917
1 files changed, 917 insertions, 0 deletions
diff --git a/arch/ppc/platforms/pplus.c b/arch/ppc/platforms/pplus.c
new file mode 100644
index 00000000000..65705c91179
--- /dev/null
+++ b/arch/ppc/platforms/pplus.c
@@ -0,0 +1,917 @@
1/*
2 * arch/ppc/platforms/pplus.c
3 *
4 * Board and PCI setup routines for MCG PowerPlus
5 *
6 * Author: Randy Vinson <rvinson@mvista.com>
7 *
8 * Derived from original PowerPlus PReP work by
9 * Cort Dougan, Johnnie Peters, Matt Porter, and
10 * Troy Benjegerdes.
11 *
12 * 2001-2004 (c) MontaVista, Software, Inc. This file is licensed under
13 * the terms of the GNU General Public License version 2. This program
14 * is licensed "as is" without any warranty of any kind, whether express
15 * or implied.
16 */
17
18#include <linux/config.h>
19#include <linux/kernel.h>
20#include <linux/interrupt.h>
21#include <linux/init.h>
22#include <linux/ioport.h>
23#include <linux/console.h>
24#include <linux/pci.h>
25#include <linux/irq.h>
26#include <linux/ide.h>
27#include <linux/seq_file.h>
28#include <linux/root_dev.h>
29
30#include <asm/system.h>
31#include <asm/io.h>
32#include <asm/pgtable.h>
33#include <asm/dma.h>
34#include <asm/machdep.h>
35#include <asm/prep_nvram.h>
36#include <asm/vga.h>
37#include <asm/i8259.h>
38#include <asm/open_pic.h>
39#include <asm/hawk.h>
40#include <asm/todc.h>
41#include <asm/bootinfo.h>
42#include <asm/kgdb.h>
43#include <asm/reg.h>
44
45#include "pplus.h"
46
47#undef DUMP_DBATS
48
49TODC_ALLOC();
50
51extern void pplus_setup_hose(void);
52extern void pplus_set_VIA_IDE_native(void);
53
54extern unsigned long loops_per_jiffy;
55unsigned char *Motherboard_map_name;
56
57/* Tables for known hardware */
58
59/* Motorola Mesquite */
60static inline int
61mesquite_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
62{
63 static char pci_irq_table[][4] =
64 /*
65 * MPIC interrupts for various IDSEL values (MPIC IRQ0 =
66 * Linux IRQ16 (to leave room for ISA IRQs at 0-15).
67 * PCI IDSEL/INTPIN->INTLINE
68 * A B C D
69 */
70 {
71 {18, 0, 0, 0}, /* IDSEL 14 - Enet 0 */
72 { 0, 0, 0, 0}, /* IDSEL 15 - unused */
73 {19, 19, 19, 19}, /* IDSEL 16 - PMC Slot 1 */
74 { 0, 0, 0, 0}, /* IDSEL 17 - unused */
75 { 0, 0, 0, 0}, /* IDSEL 18 - unused */
76 { 0, 0, 0, 0}, /* IDSEL 19 - unused */
77 {24, 25, 26, 27}, /* IDSEL 20 - P2P bridge (to cPCI 1) */
78 { 0, 0, 0, 0}, /* IDSEL 21 - unused */
79 {28, 29, 30, 31} /* IDSEL 22 - P2P bridge (to cPCI 2) */
80 };
81
82 const long min_idsel = 14, max_idsel = 22, irqs_per_slot = 4;
83 return PCI_IRQ_TABLE_LOOKUP;
84}
85
86/* Motorola Sitka */
87static inline int
88sitka_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
89{
90 static char pci_irq_table[][4] =
91 /*
92 * MPIC interrupts for various IDSEL values (MPIC IRQ0 =
93 * Linux IRQ16 (to leave room for ISA IRQs at 0-15).
94 * PCI IDSEL/INTPIN->INTLINE
95 * A B C D
96 */
97 {
98 {18, 0, 0, 0}, /* IDSEL 14 - Enet 0 */
99 { 0, 0, 0, 0}, /* IDSEL 15 - unused */
100 {25, 26, 27, 28}, /* IDSEL 16 - PMC Slot 1 */
101 {28, 25, 26, 27}, /* IDSEL 17 - PMC Slot 2 */
102 { 0, 0, 0, 0}, /* IDSEL 18 - unused */
103 { 0, 0, 0, 0}, /* IDSEL 19 - unused */
104 {20, 0, 0, 0} /* IDSEL 20 - P2P bridge (to cPCI) */
105 };
106
107 const long min_idsel = 14, max_idsel = 20, irqs_per_slot = 4;
108 return PCI_IRQ_TABLE_LOOKUP;
109}
110
111/* Motorola MTX */
112static inline int
113MTX_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
114{
115 static char pci_irq_table[][4] =
116 /*
117 * MPIC interrupts for various IDSEL values (MPIC IRQ0 =
118 * Linux IRQ16 (to leave room for ISA IRQs at 0-15).
119 * PCI IDSEL/INTPIN->INTLINE
120 * A B C D
121 */
122 {
123 {19, 0, 0, 0}, /* IDSEL 12 - SCSI */
124 { 0, 0, 0, 0}, /* IDSEL 13 - unused */
125 {18, 0, 0, 0}, /* IDSEL 14 - Enet */
126 { 0, 0, 0, 0}, /* IDSEL 15 - unused */
127 {25, 26, 27, 28}, /* IDSEL 16 - PMC Slot 1 */
128 {26, 27, 28, 25}, /* IDSEL 17 - PMC Slot 2 */
129 {27, 28, 25, 26} /* IDSEL 18 - PCI Slot 3 */
130 };
131
132 const long min_idsel = 12, max_idsel = 18, irqs_per_slot = 4;
133 return PCI_IRQ_TABLE_LOOKUP;
134}
135
136/* Motorola MTX Plus */
137/* Secondary bus interrupt routing is not supported yet */
138static inline int
139MTXplus_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
140{
141 static char pci_irq_table[][4] =
142 /*
143 * MPIC interrupts for various IDSEL values (MPIC IRQ0 =
144 * Linux IRQ16 (to leave room for ISA IRQs at 0-15).
145 * PCI IDSEL/INTPIN->INTLINE
146 * A B C D
147 */
148 {
149 {19, 0, 0, 0}, /* IDSEL 12 - SCSI */
150 { 0, 0, 0, 0}, /* IDSEL 13 - unused */
151 {18, 0, 0, 0}, /* IDSEL 14 - Enet 1 */
152 { 0, 0, 0, 0}, /* IDSEL 15 - unused */
153 {25, 26, 27, 28}, /* IDSEL 16 - PCI Slot 1P */
154 {26, 27, 28, 25}, /* IDSEL 17 - PCI Slot 2P */
155 {27, 28, 25, 26}, /* IDSEL 18 - PCI Slot 3P */
156 {26, 0, 0, 0}, /* IDSEL 19 - Enet 2 */
157 { 0, 0, 0, 0} /* IDSEL 20 - P2P Bridge */
158 };
159
160 const long min_idsel = 12, max_idsel = 20, irqs_per_slot = 4;
161 return PCI_IRQ_TABLE_LOOKUP;
162}
163
164static inline int
165Genesis2_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
166{
167 /* 2600
168 * Raven 31
169 * ISA 11
170 * SCSI 12 - IRQ3
171 * Univ 13
172 * eth 14 - IRQ2
173 * VGA 15 - IRQ4
174 * PMC1 16 - IRQ9,10,11,12 = PMC1 A-D
175 * PMC2 17 - IRQ12,9,10,11 = A-D
176 * SCSI2 18 - IRQ11
177 * eth2 19 - IRQ10
178 * PCIX 20 - IRQ9,10,11,12 = PCI A-D
179 */
180
181 /* 2400
182 * Hawk 31
183 * ISA 11
184 * Univ 13
185 * eth 14 - IRQ2
186 * PMC1 16 - IRQ9,10,11,12 = PMC A-D
187 * PMC2 17 - IRQ12,9,10,11 = PMC A-D
188 * PCIX 20 - IRQ9,10,11,12 = PMC A-D
189 */
190
191 /* 2300
192 * Raven 31
193 * ISA 11
194 * Univ 13
195 * eth 14 - IRQ2
196 * PMC1 16 - 9,10,11,12 = A-D
197 * PMC2 17 - 9,10,11,12 = B,C,D,A
198 */
199
200 static char pci_irq_table[][4] =
201 /*
202 * MPIC interrupts for various IDSEL values (MPIC IRQ0 =
203 * Linux IRQ16 (to leave room for ISA IRQs at 0-15).
204 * PCI IDSEL/INTPIN->INTLINE
205 * A B C D
206 */
207 {
208 {19, 0, 0, 0}, /* IDSEL 12 - SCSI */
209 { 0, 0, 0, 0}, /* IDSEL 13 - Universe PCI - VME */
210 {18, 0, 0, 0}, /* IDSEL 14 - Enet 1 */
211 { 0, 0, 0, 0}, /* IDSEL 15 - unused */
212 {25, 26, 27, 28}, /* IDSEL 16 - PCI/PMC Slot 1P */
213 {28, 25, 26, 27}, /* IDSEL 17 - PCI/PMC Slot 2P */
214 {27, 28, 25, 26}, /* IDSEL 18 - PCI Slot 3P */
215 {26, 0, 0, 0}, /* IDSEL 19 - Enet 2 */
216 {25, 26, 27, 28} /* IDSEL 20 - P2P Bridge */
217 };
218
219 const long min_idsel = 12, max_idsel = 20, irqs_per_slot = 4;
220 return PCI_IRQ_TABLE_LOOKUP;
221}
222
223#define MOTOROLA_CPUTYPE_REG 0x800
224#define MOTOROLA_BASETYPE_REG 0x803
225#define MPIC_RAVEN_ID 0x48010000
226#define MPIC_HAWK_ID 0x48030000
227#define MOT_PROC2_BIT 0x800
228
229static u_char pplus_openpic_initsenses[] __initdata = {
230 (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* MVME2600_INT_SIO */
231 (IRQ_SENSE_EDGE | IRQ_POLARITY_NEGATIVE),/*MVME2600_INT_FALCN_ECC_ERR */
232 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),/*MVME2600_INT_PCI_ETHERNET */
233 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_SCSI */
234 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),/*MVME2600_INT_PCI_GRAPHICS */
235 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_VME0 */
236 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_VME1 */
237 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_VME2 */
238 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_VME3 */
239 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_INTA */
240 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_INTB */
241 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_INTC */
242 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_INTD */
243 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_LM_SIG0 */
244 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_LM_SIG1 */
245 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),
246};
247
248int mot_entry = -1;
249int prep_keybd_present = 1;
250int mot_multi = 0;
251
252struct brd_info {
253 /* 0x100 mask assumes for Raven and Hawk boards that the level/edge
254 * are set */
255 int cpu_type;
256 /* 0x200 if this board has a Hawk chip. */
257 int base_type;
258 /* or'ed with 0x80 if this board should be checked for multi CPU */
259 int max_cpu;
260 const char *name;
261 int (*map_irq) (struct pci_dev *, unsigned char, unsigned char);
262};
263struct brd_info mot_info[] = {
264 {0x300, 0x00, 0x00, "MVME 2400", Genesis2_map_irq},
265 {0x1E0, 0xE0, 0x00, "Mesquite cPCI (MCP750)", mesquite_map_irq},
266 {0x1E0, 0xE1, 0x00, "Sitka cPCI (MCPN750)", sitka_map_irq},
267 {0x1E0, 0xE2, 0x00, "Mesquite cPCI (MCP750) w/ HAC", mesquite_map_irq},
268 {0x1E0, 0xF6, 0x80, "MTX Plus", MTXplus_map_irq},
269 {0x1E0, 0xF6, 0x81, "Dual MTX Plus", MTXplus_map_irq},
270 {0x1E0, 0xF7, 0x80, "MTX wo/ Parallel Port", MTX_map_irq},
271 {0x1E0, 0xF7, 0x81, "Dual MTX wo/ Parallel Port", MTX_map_irq},
272 {0x1E0, 0xF8, 0x80, "MTX w/ Parallel Port", MTX_map_irq},
273 {0x1E0, 0xF8, 0x81, "Dual MTX w/ Parallel Port", MTX_map_irq},
274 {0x1E0, 0xF9, 0x00, "MVME 2300", Genesis2_map_irq},
275 {0x1E0, 0xFA, 0x00, "MVME 2300SC/2600", Genesis2_map_irq},
276 {0x1E0, 0xFB, 0x00, "MVME 2600 with MVME712M", Genesis2_map_irq},
277 {0x1E0, 0xFC, 0x00, "MVME 2600/2700 with MVME761", Genesis2_map_irq},
278 {0x1E0, 0xFD, 0x80, "MVME 3600 with MVME712M", Genesis2_map_irq},
279 {0x1E0, 0xFD, 0x81, "MVME 4600 with MVME712M", Genesis2_map_irq},
280 {0x1E0, 0xFE, 0x80, "MVME 3600 with MVME761", Genesis2_map_irq},
281 {0x1E0, 0xFE, 0x81, "MVME 4600 with MVME761", Genesis2_map_irq},
282 {0x000, 0x00, 0x00, "", NULL}
283};
284
285void __init pplus_set_board_type(void)
286{
287 unsigned char cpu_type;
288 unsigned char base_mod;
289 int entry;
290 unsigned short devid;
291 unsigned long *ProcInfo = NULL;
292
293 cpu_type = inb(MOTOROLA_CPUTYPE_REG) & 0xF0;
294 base_mod = inb(MOTOROLA_BASETYPE_REG);
295 early_read_config_word(0, 0, 0, PCI_VENDOR_ID, &devid);
296
297 for (entry = 0; mot_info[entry].cpu_type != 0; entry++) {
298 /* Check for Hawk chip */
299 if (mot_info[entry].cpu_type & 0x200) {
300 if (devid != PCI_DEVICE_ID_MOTOROLA_HAWK)
301 continue;
302 } else {
303 /* store the system config register for later use. */
304 ProcInfo =
305 (unsigned long *)ioremap(PPLUS_SYS_CONFIG_REG, 4);
306
307 /* Check non hawk boards */
308 if ((mot_info[entry].cpu_type & 0xff) != cpu_type)
309 continue;
310
311 if (mot_info[entry].base_type == 0) {
312 mot_entry = entry;
313 break;
314 }
315
316 if (mot_info[entry].base_type != base_mod)
317 continue;
318 }
319
320 if (!(mot_info[entry].max_cpu & 0x80)) {
321 mot_entry = entry;
322 break;
323 }
324
325 /* processor 1 not present and max processor zero indicated */
326 if ((*ProcInfo & MOT_PROC2_BIT)
327 && !(mot_info[entry].max_cpu & 0x7f)) {
328 mot_entry = entry;
329 break;
330 }
331
332 /* processor 1 present and max processor zero indicated */
333 if (!(*ProcInfo & MOT_PROC2_BIT)
334 && (mot_info[entry].max_cpu & 0x7f)) {
335 mot_entry = entry;
336 break;
337 }
338
339 /* Indicate to system if this is a multiprocessor board */
340 if (!(*ProcInfo & MOT_PROC2_BIT))
341 mot_multi = 1;
342 }
343
344 if (mot_entry == -1)
345 /* No particular cpu type found - assume Mesquite (MCP750) */
346 mot_entry = 1;
347
348 Motherboard_map_name = (unsigned char *)mot_info[mot_entry].name;
349 ppc_md.pci_map_irq = mot_info[mot_entry].map_irq;
350}
351void __init pplus_pib_init(void)
352{
353 unsigned char reg;
354 unsigned short short_reg;
355
356 struct pci_dev *dev = NULL;
357
358 /*
359 * Perform specific configuration for the Via Tech or
360 * or Winbond PCI-ISA-Bridge part.
361 */
362 if ((dev = pci_get_device(PCI_VENDOR_ID_VIA,
363 PCI_DEVICE_ID_VIA_82C586_1, dev))) {
364 /*
365 * PPCBUG does not set the enable bits
366 * for the IDE device. Force them on here.
367 */
368 pci_read_config_byte(dev, 0x40, &reg);
369
370 reg |= 0x03; /* IDE: Chip Enable Bits */
371 pci_write_config_byte(dev, 0x40, reg);
372 }
373
374 if ((dev = pci_get_device(PCI_VENDOR_ID_VIA,
375 PCI_DEVICE_ID_VIA_82C586_2,
376 dev)) && (dev->devfn = 0x5a)) {
377 /* Force correct USB interrupt */
378 dev->irq = 11;
379 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
380 }
381
382 if ((dev = pci_get_device(PCI_VENDOR_ID_WINBOND,
383 PCI_DEVICE_ID_WINBOND_83C553, dev))) {
384 /* Clear PCI Interrupt Routing Control Register. */
385 short_reg = 0x0000;
386 pci_write_config_word(dev, 0x44, short_reg);
387 /* Route IDE interrupts to IRQ 14 */
388 reg = 0xEE;
389 pci_write_config_byte(dev, 0x43, reg);
390 }
391
392 if ((dev = pci_get_device(PCI_VENDOR_ID_WINBOND,
393 PCI_DEVICE_ID_WINBOND_82C105, dev))) {
394 /*
395 * Disable LEGIRQ mode so PCI INTS are routed
396 * directly to the 8259 and enable both channels
397 */
398 pci_write_config_dword(dev, 0x40, 0x10ff0033);
399
400 /* Force correct IDE interrupt */
401 dev->irq = 14;
402 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
403 }
404 pci_dev_put(dev);
405}
406
407void __init pplus_set_VIA_IDE_legacy(void)
408{
409 unsigned short vend, dev;
410
411 early_read_config_word(0, 0, PCI_DEVFN(0xb, 1), PCI_VENDOR_ID, &vend);
412 early_read_config_word(0, 0, PCI_DEVFN(0xb, 1), PCI_DEVICE_ID, &dev);
413
414 if ((vend == PCI_VENDOR_ID_VIA) &&
415 (dev == PCI_DEVICE_ID_VIA_82C586_1)) {
416 unsigned char temp;
417
418 /* put back original "standard" port base addresses */
419 early_write_config_dword(0, 0, PCI_DEVFN(0xb, 1),
420 PCI_BASE_ADDRESS_0, 0x1f1);
421 early_write_config_dword(0, 0, PCI_DEVFN(0xb, 1),
422 PCI_BASE_ADDRESS_1, 0x3f5);
423 early_write_config_dword(0, 0, PCI_DEVFN(0xb, 1),
424 PCI_BASE_ADDRESS_2, 0x171);
425 early_write_config_dword(0, 0, PCI_DEVFN(0xb, 1),
426 PCI_BASE_ADDRESS_3, 0x375);
427 early_write_config_dword(0, 0, PCI_DEVFN(0xb, 1),
428 PCI_BASE_ADDRESS_4, 0xcc01);
429
430 /* put into legacy mode */
431 early_read_config_byte(0, 0, PCI_DEVFN(0xb, 1), PCI_CLASS_PROG,
432 &temp);
433 temp &= ~0x05;
434 early_write_config_byte(0, 0, PCI_DEVFN(0xb, 1), PCI_CLASS_PROG,
435 temp);
436 }
437}
438
439void pplus_set_VIA_IDE_native(void)
440{
441 unsigned short vend, dev;
442
443 early_read_config_word(0, 0, PCI_DEVFN(0xb, 1), PCI_VENDOR_ID, &vend);
444 early_read_config_word(0, 0, PCI_DEVFN(0xb, 1), PCI_DEVICE_ID, &dev);
445
446 if ((vend == PCI_VENDOR_ID_VIA) &&
447 (dev == PCI_DEVICE_ID_VIA_82C586_1)) {
448 unsigned char temp;
449
450 /* put into native mode */
451 early_read_config_byte(0, 0, PCI_DEVFN(0xb, 1), PCI_CLASS_PROG,
452 &temp);
453 temp |= 0x05;
454 early_write_config_byte(0, 0, PCI_DEVFN(0xb, 1), PCI_CLASS_PROG,
455 temp);
456 }
457}
458
459void __init pplus_pcibios_fixup(void)
460{
461
462 unsigned char reg;
463 unsigned short devid;
464 unsigned char base_mod;
465
466 printk(KERN_INFO "Setting PCI interrupts for a \"%s\"\n",
467 Motherboard_map_name);
468
469 /* Setup the Winbond or Via PIB */
470 pplus_pib_init();
471
472 /* Set up floppy in PS/2 mode */
473 outb(0x09, SIO_CONFIG_RA);
474 reg = inb(SIO_CONFIG_RD);
475 reg = (reg & 0x3F) | 0x40;
476 outb(reg, SIO_CONFIG_RD);
477 outb(reg, SIO_CONFIG_RD); /* Have to write twice to change! */
478
479 /* This is a hack. If this is a 2300 or 2400 mot board then there is
480 * no keyboard controller and we have to indicate that.
481 */
482
483 early_read_config_word(0, 0, 0, PCI_VENDOR_ID, &devid);
484 base_mod = inb(MOTOROLA_BASETYPE_REG);
485 if ((devid == PCI_DEVICE_ID_MOTOROLA_HAWK) ||
486 (base_mod == 0xF9) || (base_mod == 0xFA) || (base_mod == 0xE1))
487 prep_keybd_present = 0;
488}
489
490void __init pplus_find_bridges(void)
491{
492 struct pci_controller *hose;
493
494 hose = pcibios_alloc_controller();
495 if (!hose)
496 return;
497
498 hose->first_busno = 0;
499 hose->last_busno = 0xff;
500
501 hose->pci_mem_offset = PREP_ISA_MEM_BASE;
502 hose->io_base_virt = (void *)PREP_ISA_IO_BASE;
503
504 pci_init_resource(&hose->io_resource, PPLUS_PCI_IO_START,
505 PPLUS_PCI_IO_END, IORESOURCE_IO, "PCI host bridge");
506 pci_init_resource(&hose->mem_resources[0], PPLUS_PROC_PCI_MEM_START,
507 PPLUS_PROC_PCI_MEM_END, IORESOURCE_MEM,
508 "PCI host bridge");
509
510 hose->io_space.start = PPLUS_PCI_IO_START;
511 hose->io_space.end = PPLUS_PCI_IO_END;
512 hose->mem_space.start = PPLUS_PCI_MEM_START;
513 hose->mem_space.end = PPLUS_PCI_MEM_END - HAWK_MPIC_SIZE;
514
515 if (hawk_init(hose, PPLUS_HAWK_PPC_REG_BASE, PPLUS_PROC_PCI_MEM_START,
516 PPLUS_PROC_PCI_MEM_END - HAWK_MPIC_SIZE,
517 PPLUS_PROC_PCI_IO_START, PPLUS_PROC_PCI_IO_END,
518 PPLUS_PROC_PCI_MEM_END - HAWK_MPIC_SIZE + 1)
519 != 0) {
520 printk(KERN_CRIT "Could not initialize host bridge\n");
521
522 }
523
524 pplus_set_VIA_IDE_legacy();
525
526 hose->last_busno = pciauto_bus_scan(hose, hose->first_busno);
527
528 ppc_md.pcibios_fixup = pplus_pcibios_fixup;
529 ppc_md.pci_swizzle = common_swizzle;
530}
531
532static int pplus_show_cpuinfo(struct seq_file *m)
533{
534 seq_printf(m, "vendor\t\t: Motorola MCG\n");
535 seq_printf(m, "machine\t\t: %s\n", Motherboard_map_name);
536
537 return 0;
538}
539
540static void __init pplus_setup_arch(void)
541{
542 struct pci_controller *hose;
543
544 if (ppc_md.progress)
545 ppc_md.progress("pplus_setup_arch: enter", 0);
546
547 /* init to some ~sane value until calibrate_delay() runs */
548 loops_per_jiffy = 50000000;
549
550 if (ppc_md.progress)
551 ppc_md.progress("pplus_setup_arch: find_bridges", 0);
552
553 /* Setup PCI host bridge */
554 pplus_find_bridges();
555
556 hose = pci_bus_to_hose(0);
557 isa_io_base = (ulong) hose->io_base_virt;
558
559 if (ppc_md.progress)
560 ppc_md.progress("pplus_setup_arch: set_board_type", 0);
561
562 pplus_set_board_type();
563
564 /* Enable L2. Assume we don't need to flush -- Cort */
565 *(unsigned char *)(PPLUS_L2_CONTROL_REG) |= 3;
566
567#ifdef CONFIG_BLK_DEV_INITRD
568 if (initrd_start)
569 ROOT_DEV = Root_RAM0;
570 else
571#endif
572#ifdef CONFIG_ROOT_NFS
573 ROOT_DEV = Root_NFS;
574#else
575 ROOT_DEV = Root_SDA2;
576#endif
577
578 printk(KERN_INFO "Motorola PowerPlus Platform\n");
579 printk(KERN_INFO
580 "Port by MontaVista Software, Inc. (source@mvista.com)\n");
581
582#ifdef CONFIG_VGA_CONSOLE
583 /* remap the VGA memory */
584 vgacon_remap_base = (unsigned long)ioremap(PPLUS_ISA_MEM_BASE,
585 0x08000000);
586 conswitchp = &vga_con;
587#endif
588#ifdef CONFIG_PPCBUG_NVRAM
589 /* Read in NVRAM data */
590 init_prep_nvram();
591
592 /* if no bootargs, look in NVRAM */
593 if (cmd_line[0] == '\0') {
594 char *bootargs;
595 bootargs = prep_nvram_get_var("bootargs");
596 if (bootargs != NULL) {
597 strcpy(cmd_line, bootargs);
598 /* again.. */
599 strcpy(saved_command_line, cmd_line);
600 }
601 }
602#endif
603 if (ppc_md.progress)
604 ppc_md.progress("pplus_setup_arch: exit", 0);
605}
606
607static void pplus_restart(char *cmd)
608{
609 unsigned long i = 10000;
610
611 local_irq_disable();
612
613 /* set VIA IDE controller into native mode */
614 pplus_set_VIA_IDE_native();
615
616 /* set exception prefix high - to the prom */
617 _nmask_and_or_msr(0, MSR_IP);
618
619 /* make sure bit 0 (reset) is a 0 */
620 outb(inb(0x92) & ~1L, 0x92);
621 /* signal a reset to system control port A - soft reset */
622 outb(inb(0x92) | 1, 0x92);
623
624 while (i != 0)
625 i++;
626 panic("restart failed\n");
627}
628
629static void pplus_halt(void)
630{
631 /* set exception prefix high - to the prom */
632 _nmask_and_or_msr(MSR_EE, MSR_IP);
633
634 /* make sure bit 0 (reset) is a 0 */
635 outb(inb(0x92) & ~1L, 0x92);
636 /* signal a reset to system control port A - soft reset */
637 outb(inb(0x92) | 1, 0x92);
638
639 while (1) ;
640 /*
641 * Not reached
642 */
643}
644
645static void pplus_power_off(void)
646{
647 pplus_halt();
648}
649
650static unsigned int pplus_irq_canonicalize(u_int irq)
651{
652 if (irq == 2)
653 return 9;
654 else
655 return irq;
656}
657
658static void __init pplus_init_IRQ(void)
659{
660 int i;
661
662 if (ppc_md.progress)
663 ppc_md.progress("init_irq: enter", 0);
664
665 OpenPIC_InitSenses = pplus_openpic_initsenses;
666 OpenPIC_NumInitSenses = sizeof(pplus_openpic_initsenses);
667
668 if (OpenPIC_Addr != NULL) {
669
670 openpic_set_sources(0, 16, OpenPIC_Addr + 0x10000);
671 openpic_init(NUM_8259_INTERRUPTS);
672 openpic_hookup_cascade(NUM_8259_INTERRUPTS, "82c59 cascade",
673 i8259_irq);
674 ppc_md.get_irq = openpic_get_irq;
675 }
676
677 for (i = 0; i < NUM_8259_INTERRUPTS; i++)
678 irq_desc[i].handler = &i8259_pic;
679
680 i8259_init(0);
681
682 if (ppc_md.progress)
683 ppc_md.progress("init_irq: exit", 0);
684}
685
686#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
687/*
688 * IDE stuff.
689 */
690static int pplus_ide_default_irq(unsigned long base)
691{
692 switch (base) {
693 case 0x1f0:
694 return 14;
695 case 0x170:
696 return 15;
697 default:
698 return 0;
699 }
700}
701
702static unsigned long pplus_ide_default_io_base(int index)
703{
704 switch (index) {
705 case 0:
706 return 0x1f0;
707 case 1:
708 return 0x170;
709 default:
710 return 0;
711 }
712}
713
714static void __init
715pplus_ide_init_hwif_ports(hw_regs_t * hw, unsigned long data_port,
716 unsigned long ctrl_port, int *irq)
717{
718 unsigned long reg = data_port;
719 int i;
720
721 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
722 hw->io_ports[i] = reg;
723 reg += 1;
724 }
725
726 if (ctrl_port)
727 hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port;
728 else
729 hw->io_ports[IDE_CONTROL_OFFSET] =
730 hw->io_ports[IDE_DATA_OFFSET] + 0x206;
731
732 if (irq != NULL)
733 *irq = pplus_ide_default_irq(data_port);
734}
735#endif
736
737#ifdef CONFIG_SMP
738/* PowerPlus (MTX) support */
739static int __init smp_pplus_probe(void)
740{
741 extern int mot_multi;
742
743 if (mot_multi) {
744 openpic_request_IPIs();
745 smp_hw_index[1] = 1;
746 return 2;
747 }
748
749 return 1;
750}
751
752static void __init smp_pplus_kick_cpu(int nr)
753{
754 *(unsigned long *)KERNELBASE = nr;
755 asm volatile ("dcbf 0,%0"::"r" (KERNELBASE):"memory");
756 printk(KERN_INFO "CPU1 reset, waiting\n");
757}
758
759static void __init smp_pplus_setup_cpu(int cpu_nr)
760{
761 if (OpenPIC_Addr)
762 do_openpic_setup_cpu();
763}
764
765static struct smp_ops_t pplus_smp_ops = {
766 smp_openpic_message_pass,
767 smp_pplus_probe,
768 smp_pplus_kick_cpu,
769 smp_pplus_setup_cpu,
770 .give_timebase = smp_generic_give_timebase,
771 .take_timebase = smp_generic_take_timebase,
772};
773#endif /* CONFIG_SMP */
774
775#ifdef DUMP_DBATS
776static void print_dbat(int idx, u32 bat)
777{
778
779 char str[64];
780
781 sprintf(str, "DBAT%c%c = 0x%08x\n",
782 (char)((idx - DBAT0U) / 2) + '0', (idx & 1) ? 'L' : 'U', bat);
783 ppc_md.progress(str, 0);
784}
785
786#define DUMP_DBAT(x) \
787 do { \
788 u32 __temp = mfspr(x);\
789 print_dbat(x, __temp); \
790 } while (0)
791
792static void dump_dbats(void)
793{
794 if (ppc_md.progress) {
795 DUMP_DBAT(DBAT0U);
796 DUMP_DBAT(DBAT0L);
797 DUMP_DBAT(DBAT1U);
798 DUMP_DBAT(DBAT1L);
799 DUMP_DBAT(DBAT2U);
800 DUMP_DBAT(DBAT2L);
801 DUMP_DBAT(DBAT3U);
802 DUMP_DBAT(DBAT3L);
803 }
804}
805#endif
806
807static unsigned long __init pplus_find_end_of_memory(void)
808{
809 unsigned long total;
810
811 if (ppc_md.progress)
812 ppc_md.progress("pplus_find_end_of_memory", 0);
813
814#ifdef DUMP_DBATS
815 dump_dbats();
816#endif
817
818 total = hawk_get_mem_size(PPLUS_HAWK_SMC_BASE);
819 return (total);
820}
821
822static void __init pplus_map_io(void)
823{
824 io_block_mapping(PPLUS_ISA_IO_BASE, PPLUS_ISA_IO_BASE, 0x10000000,
825 _PAGE_IO);
826 io_block_mapping(0xfef80000, 0xfef80000, 0x00080000, _PAGE_IO);
827}
828
829static void __init pplus_init2(void)
830{
831#ifdef CONFIG_NVRAM
832 request_region(PREP_NVRAM_AS0, 0x8, "nvram");
833#endif
834 request_region(0x20, 0x20, "pic1");
835 request_region(0xa0, 0x20, "pic2");
836 request_region(0x00, 0x20, "dma1");
837 request_region(0x40, 0x20, "timer");
838 request_region(0x80, 0x10, "dma page reg");
839 request_region(0xc0, 0x20, "dma2");
840}
841
842/*
843 * Set BAT 2 to access 0x8000000 so progress messages will work and set BAT 3
844 * to 0xf0000000 to access Falcon/Raven or Hawk registers
845 */
846static __inline__ void pplus_set_bat(void)
847{
848 /* wait for all outstanding memory accesses to complete */
849 mb();
850
851 /* setup DBATs */
852 mtspr(SPRN_DBAT2U, 0x80001ffe);
853 mtspr(SPRN_DBAT2L, 0x8000002a);
854 mtspr(SPRN_DBAT3U, 0xf0001ffe);
855 mtspr(SPRN_DBAT3L, 0xf000002a);
856
857 /* wait for updates */
858 mb();
859}
860
861void __init
862platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
863 unsigned long r6, unsigned long r7)
864{
865 parse_bootinfo(find_bootinfo());
866
867 /* Map in board regs, etc. */
868 pplus_set_bat();
869
870 isa_io_base = PREP_ISA_IO_BASE;
871 isa_mem_base = PREP_ISA_MEM_BASE;
872 pci_dram_offset = PREP_PCI_DRAM_OFFSET;
873 ISA_DMA_THRESHOLD = 0x00ffffff;
874 DMA_MODE_READ = 0x44;
875 DMA_MODE_WRITE = 0x48;
876
877 ppc_md.setup_arch = pplus_setup_arch;
878 ppc_md.show_cpuinfo = pplus_show_cpuinfo;
879 ppc_md.irq_canonicalize = pplus_irq_canonicalize;
880 ppc_md.init_IRQ = pplus_init_IRQ;
881 /* this gets changed later on if we have an OpenPIC -- Cort */
882 ppc_md.get_irq = i8259_irq;
883 ppc_md.init = pplus_init2;
884
885 ppc_md.restart = pplus_restart;
886 ppc_md.power_off = pplus_power_off;
887 ppc_md.halt = pplus_halt;
888
889 TODC_INIT(TODC_TYPE_MK48T59, PREP_NVRAM_AS0, PREP_NVRAM_AS1,
890 PREP_NVRAM_DATA, 8);
891
892 ppc_md.time_init = todc_time_init;
893 ppc_md.set_rtc_time = todc_set_rtc_time;
894 ppc_md.get_rtc_time = todc_get_rtc_time;
895 ppc_md.calibrate_decr = todc_calibrate_decr;
896 ppc_md.nvram_read_val = todc_m48txx_read_val;
897 ppc_md.nvram_write_val = todc_m48txx_write_val;
898
899 ppc_md.find_end_of_memory = pplus_find_end_of_memory;
900 ppc_md.setup_io_mappings = pplus_map_io;
901
902#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
903 ppc_ide_md.default_irq = pplus_ide_default_irq;
904 ppc_ide_md.default_io_base = pplus_ide_default_io_base;
905 ppc_ide_md.ide_init_hwif = pplus_ide_init_hwif_ports;
906#endif
907
908#ifdef CONFIG_SERIAL_TEXT_DEBUG
909 ppc_md.progress = gen550_progress;
910#endif /* CONFIG_SERIAL_TEXT_DEBUG */
911#ifdef CONFIG_KGDB
912 ppc_md.kgdb_map_scc = gen550_kgdb_map_scc;
913#endif
914#ifdef CONFIG_SMP
915 ppc_md.smp_ops = &pplus_smp_ops;
916#endif /* CONFIG_SMP */
917}
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-22 12:21:11 -0500