2 * arch/ppc/platforms/pplus.c
4 * Board and PCI setup routines for MCG PowerPlus
6 * Author: Randy Vinson <rvinson@mvista.com>
8 * Derived from original PowerPlus PReP work by
9 * Cort Dougan, Johnnie Peters, Matt Porter, and
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
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/ide.h>
26 #include <linux/seq_file.h>
27 #include <linux/root_dev.h>
29 #include <asm/system.h>
31 #include <asm/pgtable.h>
33 #include <asm/machdep.h>
34 #include <asm/prep_nvram.h>
36 #include <asm/i8259.h>
37 #include <asm/open_pic.h>
40 #include <asm/bootinfo.h>
50 extern void pplus_setup_hose(void);
51 extern void pplus_set_VIA_IDE_native(void);
53 extern unsigned long loops_per_jiffy;
54 unsigned char *Motherboard_map_name;
56 /* Tables for known hardware */
58 /* Motorola Mesquite */
60 mesquite_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
62 static char pci_irq_table[][4] =
64 * MPIC interrupts for various IDSEL values (MPIC IRQ0 =
65 * Linux IRQ16 (to leave room for ISA IRQs at 0-15).
66 * PCI IDSEL/INTPIN->INTLINE
70 {18, 0, 0, 0}, /* IDSEL 14 - Enet 0 */
71 { 0, 0, 0, 0}, /* IDSEL 15 - unused */
72 {19, 19, 19, 19}, /* IDSEL 16 - PMC Slot 1 */
73 { 0, 0, 0, 0}, /* IDSEL 17 - unused */
74 { 0, 0, 0, 0}, /* IDSEL 18 - unused */
75 { 0, 0, 0, 0}, /* IDSEL 19 - unused */
76 {24, 25, 26, 27}, /* IDSEL 20 - P2P bridge (to cPCI 1) */
77 { 0, 0, 0, 0}, /* IDSEL 21 - unused */
78 {28, 29, 30, 31} /* IDSEL 22 - P2P bridge (to cPCI 2) */
81 const long min_idsel = 14, max_idsel = 22, irqs_per_slot = 4;
82 return PCI_IRQ_TABLE_LOOKUP;
87 sitka_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
89 static char pci_irq_table[][4] =
91 * MPIC interrupts for various IDSEL values (MPIC IRQ0 =
92 * Linux IRQ16 (to leave room for ISA IRQs at 0-15).
93 * PCI IDSEL/INTPIN->INTLINE
97 {18, 0, 0, 0}, /* IDSEL 14 - Enet 0 */
98 { 0, 0, 0, 0}, /* IDSEL 15 - unused */
99 {25, 26, 27, 28}, /* IDSEL 16 - PMC Slot 1 */
100 {28, 25, 26, 27}, /* IDSEL 17 - PMC Slot 2 */
101 { 0, 0, 0, 0}, /* IDSEL 18 - unused */
102 { 0, 0, 0, 0}, /* IDSEL 19 - unused */
103 {20, 0, 0, 0} /* IDSEL 20 - P2P bridge (to cPCI) */
106 const long min_idsel = 14, max_idsel = 20, irqs_per_slot = 4;
107 return PCI_IRQ_TABLE_LOOKUP;
112 MTX_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
114 static char pci_irq_table[][4] =
116 * MPIC interrupts for various IDSEL values (MPIC IRQ0 =
117 * Linux IRQ16 (to leave room for ISA IRQs at 0-15).
118 * PCI IDSEL/INTPIN->INTLINE
122 {19, 0, 0, 0}, /* IDSEL 12 - SCSI */
123 { 0, 0, 0, 0}, /* IDSEL 13 - unused */
124 {18, 0, 0, 0}, /* IDSEL 14 - Enet */
125 { 0, 0, 0, 0}, /* IDSEL 15 - unused */
126 {25, 26, 27, 28}, /* IDSEL 16 - PMC Slot 1 */
127 {26, 27, 28, 25}, /* IDSEL 17 - PMC Slot 2 */
128 {27, 28, 25, 26} /* IDSEL 18 - PCI Slot 3 */
131 const long min_idsel = 12, max_idsel = 18, irqs_per_slot = 4;
132 return PCI_IRQ_TABLE_LOOKUP;
135 /* Motorola MTX Plus */
136 /* Secondary bus interrupt routing is not supported yet */
138 MTXplus_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
140 static char pci_irq_table[][4] =
142 * MPIC interrupts for various IDSEL values (MPIC IRQ0 =
143 * Linux IRQ16 (to leave room for ISA IRQs at 0-15).
144 * PCI IDSEL/INTPIN->INTLINE
148 {19, 0, 0, 0}, /* IDSEL 12 - SCSI */
149 { 0, 0, 0, 0}, /* IDSEL 13 - unused */
150 {18, 0, 0, 0}, /* IDSEL 14 - Enet 1 */
151 { 0, 0, 0, 0}, /* IDSEL 15 - unused */
152 {25, 26, 27, 28}, /* IDSEL 16 - PCI Slot 1P */
153 {26, 27, 28, 25}, /* IDSEL 17 - PCI Slot 2P */
154 {27, 28, 25, 26}, /* IDSEL 18 - PCI Slot 3P */
155 {26, 0, 0, 0}, /* IDSEL 19 - Enet 2 */
156 { 0, 0, 0, 0} /* IDSEL 20 - P2P Bridge */
159 const long min_idsel = 12, max_idsel = 20, irqs_per_slot = 4;
160 return PCI_IRQ_TABLE_LOOKUP;
164 Genesis2_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
173 * PMC1 16 - IRQ9,10,11,12 = PMC1 A-D
174 * PMC2 17 - IRQ12,9,10,11 = A-D
177 * PCIX 20 - IRQ9,10,11,12 = PCI A-D
185 * PMC1 16 - IRQ9,10,11,12 = PMC A-D
186 * PMC2 17 - IRQ12,9,10,11 = PMC A-D
187 * PCIX 20 - IRQ9,10,11,12 = PMC A-D
195 * PMC1 16 - 9,10,11,12 = A-D
196 * PMC2 17 - 9,10,11,12 = B,C,D,A
199 static char pci_irq_table[][4] =
201 * MPIC interrupts for various IDSEL values (MPIC IRQ0 =
202 * Linux IRQ16 (to leave room for ISA IRQs at 0-15).
203 * PCI IDSEL/INTPIN->INTLINE
207 {19, 0, 0, 0}, /* IDSEL 12 - SCSI */
208 { 0, 0, 0, 0}, /* IDSEL 13 - Universe PCI - VME */
209 {18, 0, 0, 0}, /* IDSEL 14 - Enet 1 */
210 { 0, 0, 0, 0}, /* IDSEL 15 - unused */
211 {25, 26, 27, 28}, /* IDSEL 16 - PCI/PMC Slot 1P */
212 {28, 25, 26, 27}, /* IDSEL 17 - PCI/PMC Slot 2P */
213 {27, 28, 25, 26}, /* IDSEL 18 - PCI Slot 3P */
214 {26, 0, 0, 0}, /* IDSEL 19 - Enet 2 */
215 {25, 26, 27, 28} /* IDSEL 20 - P2P Bridge */
218 const long min_idsel = 12, max_idsel = 20, irqs_per_slot = 4;
219 return PCI_IRQ_TABLE_LOOKUP;
222 #define MOTOROLA_CPUTYPE_REG 0x800
223 #define MOTOROLA_BASETYPE_REG 0x803
224 #define MPIC_RAVEN_ID 0x48010000
225 #define MPIC_HAWK_ID 0x48030000
226 #define MOT_PROC2_BIT 0x800
228 static u_char pplus_openpic_initsenses[] __initdata = {
229 (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* MVME2600_INT_SIO */
230 (IRQ_SENSE_EDGE | IRQ_POLARITY_NEGATIVE),/*MVME2600_INT_FALCN_ECC_ERR */
231 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),/*MVME2600_INT_PCI_ETHERNET */
232 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_SCSI */
233 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),/*MVME2600_INT_PCI_GRAPHICS */
234 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_VME0 */
235 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_VME1 */
236 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_VME2 */
237 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_VME3 */
238 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_INTA */
239 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_INTB */
240 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_INTC */
241 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_INTD */
242 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_LM_SIG0 */
243 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_LM_SIG1 */
244 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),
248 int prep_keybd_present = 1;
252 /* 0x100 mask assumes for Raven and Hawk boards that the level/edge
255 /* 0x200 if this board has a Hawk chip. */
257 /* or'ed with 0x80 if this board should be checked for multi CPU */
260 int (*map_irq) (struct pci_dev *, unsigned char, unsigned char);
262 struct brd_info mot_info[] = {
263 {0x300, 0x00, 0x00, "MVME 2400", Genesis2_map_irq},
264 {0x1E0, 0xE0, 0x00, "Mesquite cPCI (MCP750)", mesquite_map_irq},
265 {0x1E0, 0xE1, 0x00, "Sitka cPCI (MCPN750)", sitka_map_irq},
266 {0x1E0, 0xE2, 0x00, "Mesquite cPCI (MCP750) w/ HAC", mesquite_map_irq},
267 {0x1E0, 0xF6, 0x80, "MTX Plus", MTXplus_map_irq},
268 {0x1E0, 0xF6, 0x81, "Dual MTX Plus", MTXplus_map_irq},
269 {0x1E0, 0xF7, 0x80, "MTX wo/ Parallel Port", MTX_map_irq},
270 {0x1E0, 0xF7, 0x81, "Dual MTX wo/ Parallel Port", MTX_map_irq},
271 {0x1E0, 0xF8, 0x80, "MTX w/ Parallel Port", MTX_map_irq},
272 {0x1E0, 0xF8, 0x81, "Dual MTX w/ Parallel Port", MTX_map_irq},
273 {0x1E0, 0xF9, 0x00, "MVME 2300", Genesis2_map_irq},
274 {0x1E0, 0xFA, 0x00, "MVME 2300SC/2600", Genesis2_map_irq},
275 {0x1E0, 0xFB, 0x00, "MVME 2600 with MVME712M", Genesis2_map_irq},
276 {0x1E0, 0xFC, 0x00, "MVME 2600/2700 with MVME761", Genesis2_map_irq},
277 {0x1E0, 0xFD, 0x80, "MVME 3600 with MVME712M", Genesis2_map_irq},
278 {0x1E0, 0xFD, 0x81, "MVME 4600 with MVME712M", Genesis2_map_irq},
279 {0x1E0, 0xFE, 0x80, "MVME 3600 with MVME761", Genesis2_map_irq},
280 {0x1E0, 0xFE, 0x81, "MVME 4600 with MVME761", Genesis2_map_irq},
281 {0x000, 0x00, 0x00, "", NULL}
284 void __init pplus_set_board_type(void)
286 unsigned char cpu_type;
287 unsigned char base_mod;
289 unsigned short devid;
290 unsigned long *ProcInfo = NULL;
292 cpu_type = inb(MOTOROLA_CPUTYPE_REG) & 0xF0;
293 base_mod = inb(MOTOROLA_BASETYPE_REG);
294 early_read_config_word(0, 0, 0, PCI_VENDOR_ID, &devid);
296 for (entry = 0; mot_info[entry].cpu_type != 0; entry++) {
297 /* Check for Hawk chip */
298 if (mot_info[entry].cpu_type & 0x200) {
299 if (devid != PCI_DEVICE_ID_MOTOROLA_HAWK)
302 /* store the system config register for later use. */
304 (unsigned long *)ioremap(PPLUS_SYS_CONFIG_REG, 4);
306 /* Check non hawk boards */
307 if ((mot_info[entry].cpu_type & 0xff) != cpu_type)
310 if (mot_info[entry].base_type == 0) {
315 if (mot_info[entry].base_type != base_mod)
319 if (!(mot_info[entry].max_cpu & 0x80)) {
324 /* processor 1 not present and max processor zero indicated */
325 if ((*ProcInfo & MOT_PROC2_BIT)
326 && !(mot_info[entry].max_cpu & 0x7f)) {
331 /* processor 1 present and max processor zero indicated */
332 if (!(*ProcInfo & MOT_PROC2_BIT)
333 && (mot_info[entry].max_cpu & 0x7f)) {
338 /* Indicate to system if this is a multiprocessor board */
339 if (!(*ProcInfo & MOT_PROC2_BIT))
344 /* No particular cpu type found - assume Mesquite (MCP750) */
347 Motherboard_map_name = (unsigned char *)mot_info[mot_entry].name;
348 ppc_md.pci_map_irq = mot_info[mot_entry].map_irq;
350 void __init pplus_pib_init(void)
353 unsigned short short_reg;
355 struct pci_dev *dev = NULL;
358 * Perform specific configuration for the Via Tech or
359 * or Winbond PCI-ISA-Bridge part.
361 if ((dev = pci_get_device(PCI_VENDOR_ID_VIA,
362 PCI_DEVICE_ID_VIA_82C586_1, dev))) {
364 * PPCBUG does not set the enable bits
365 * for the IDE device. Force them on here.
367 pci_read_config_byte(dev, 0x40, ®);
369 reg |= 0x03; /* IDE: Chip Enable Bits */
370 pci_write_config_byte(dev, 0x40, reg);
373 if ((dev = pci_get_device(PCI_VENDOR_ID_VIA,
374 PCI_DEVICE_ID_VIA_82C586_2,
375 dev)) && (dev->devfn = 0x5a)) {
376 /* Force correct USB interrupt */
378 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
381 if ((dev = pci_get_device(PCI_VENDOR_ID_WINBOND,
382 PCI_DEVICE_ID_WINBOND_83C553, dev))) {
383 /* Clear PCI Interrupt Routing Control Register. */
385 pci_write_config_word(dev, 0x44, short_reg);
386 /* Route IDE interrupts to IRQ 14 */
388 pci_write_config_byte(dev, 0x43, reg);
391 if ((dev = pci_get_device(PCI_VENDOR_ID_WINBOND,
392 PCI_DEVICE_ID_WINBOND_82C105, dev))) {
394 * Disable LEGIRQ mode so PCI INTS are routed
395 * directly to the 8259 and enable both channels
397 pci_write_config_dword(dev, 0x40, 0x10ff0033);
399 /* Force correct IDE interrupt */
401 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
406 void __init pplus_set_VIA_IDE_legacy(void)
408 unsigned short vend, dev;
410 early_read_config_word(0, 0, PCI_DEVFN(0xb, 1), PCI_VENDOR_ID, &vend);
411 early_read_config_word(0, 0, PCI_DEVFN(0xb, 1), PCI_DEVICE_ID, &dev);
413 if ((vend == PCI_VENDOR_ID_VIA) &&
414 (dev == PCI_DEVICE_ID_VIA_82C586_1)) {
417 /* put back original "standard" port base addresses */
418 early_write_config_dword(0, 0, PCI_DEVFN(0xb, 1),
419 PCI_BASE_ADDRESS_0, 0x1f1);
420 early_write_config_dword(0, 0, PCI_DEVFN(0xb, 1),
421 PCI_BASE_ADDRESS_1, 0x3f5);
422 early_write_config_dword(0, 0, PCI_DEVFN(0xb, 1),
423 PCI_BASE_ADDRESS_2, 0x171);
424 early_write_config_dword(0, 0, PCI_DEVFN(0xb, 1),
425 PCI_BASE_ADDRESS_3, 0x375);
426 early_write_config_dword(0, 0, PCI_DEVFN(0xb, 1),
427 PCI_BASE_ADDRESS_4, 0xcc01);
429 /* put into legacy mode */
430 early_read_config_byte(0, 0, PCI_DEVFN(0xb, 1), PCI_CLASS_PROG,
433 early_write_config_byte(0, 0, PCI_DEVFN(0xb, 1), PCI_CLASS_PROG,
438 void pplus_set_VIA_IDE_native(void)
440 unsigned short vend, dev;
442 early_read_config_word(0, 0, PCI_DEVFN(0xb, 1), PCI_VENDOR_ID, &vend);
443 early_read_config_word(0, 0, PCI_DEVFN(0xb, 1), PCI_DEVICE_ID, &dev);
445 if ((vend == PCI_VENDOR_ID_VIA) &&
446 (dev == PCI_DEVICE_ID_VIA_82C586_1)) {
449 /* put into native mode */
450 early_read_config_byte(0, 0, PCI_DEVFN(0xb, 1), PCI_CLASS_PROG,
453 early_write_config_byte(0, 0, PCI_DEVFN(0xb, 1), PCI_CLASS_PROG,
458 void __init pplus_pcibios_fixup(void)
462 unsigned short devid;
463 unsigned char base_mod;
465 printk(KERN_INFO "Setting PCI interrupts for a \"%s\"\n",
466 Motherboard_map_name);
468 /* Setup the Winbond or Via PIB */
471 /* Set up floppy in PS/2 mode */
472 outb(0x09, SIO_CONFIG_RA);
473 reg = inb(SIO_CONFIG_RD);
474 reg = (reg & 0x3F) | 0x40;
475 outb(reg, SIO_CONFIG_RD);
476 outb(reg, SIO_CONFIG_RD); /* Have to write twice to change! */
478 /* This is a hack. If this is a 2300 or 2400 mot board then there is
479 * no keyboard controller and we have to indicate that.
482 early_read_config_word(0, 0, 0, PCI_VENDOR_ID, &devid);
483 base_mod = inb(MOTOROLA_BASETYPE_REG);
484 if ((devid == PCI_DEVICE_ID_MOTOROLA_HAWK) ||
485 (base_mod == 0xF9) || (base_mod == 0xFA) || (base_mod == 0xE1))
486 prep_keybd_present = 0;
489 void __init pplus_find_bridges(void)
491 struct pci_controller *hose;
493 hose = pcibios_alloc_controller();
497 hose->first_busno = 0;
498 hose->last_busno = 0xff;
500 hose->pci_mem_offset = PREP_ISA_MEM_BASE;
501 hose->io_base_virt = (void *)PREP_ISA_IO_BASE;
503 pci_init_resource(&hose->io_resource, PPLUS_PCI_IO_START,
504 PPLUS_PCI_IO_END, IORESOURCE_IO, "PCI host bridge");
505 pci_init_resource(&hose->mem_resources[0], PPLUS_PROC_PCI_MEM_START,
506 PPLUS_PROC_PCI_MEM_END, IORESOURCE_MEM,
509 hose->io_space.start = PPLUS_PCI_IO_START;
510 hose->io_space.end = PPLUS_PCI_IO_END;
511 hose->mem_space.start = PPLUS_PCI_MEM_START;
512 hose->mem_space.end = PPLUS_PCI_MEM_END - HAWK_MPIC_SIZE;
514 if (hawk_init(hose, PPLUS_HAWK_PPC_REG_BASE, PPLUS_PROC_PCI_MEM_START,
515 PPLUS_PROC_PCI_MEM_END - HAWK_MPIC_SIZE,
516 PPLUS_PROC_PCI_IO_START, PPLUS_PROC_PCI_IO_END,
517 PPLUS_PROC_PCI_MEM_END - HAWK_MPIC_SIZE + 1)
519 printk(KERN_CRIT "Could not initialize host bridge\n");
523 pplus_set_VIA_IDE_legacy();
525 hose->last_busno = pciauto_bus_scan(hose, hose->first_busno);
527 ppc_md.pcibios_fixup = pplus_pcibios_fixup;
528 ppc_md.pci_swizzle = common_swizzle;
531 static int pplus_show_cpuinfo(struct seq_file *m)
533 seq_printf(m, "vendor\t\t: Motorola MCG\n");
534 seq_printf(m, "machine\t\t: %s\n", Motherboard_map_name);
539 static void __init pplus_setup_arch(void)
541 struct pci_controller *hose;
544 ppc_md.progress("pplus_setup_arch: enter", 0);
546 /* init to some ~sane value until calibrate_delay() runs */
547 loops_per_jiffy = 50000000;
550 ppc_md.progress("pplus_setup_arch: find_bridges", 0);
552 /* Setup PCI host bridge */
553 pplus_find_bridges();
555 hose = pci_bus_to_hose(0);
556 isa_io_base = (ulong) hose->io_base_virt;
559 ppc_md.progress("pplus_setup_arch: set_board_type", 0);
561 pplus_set_board_type();
563 /* Enable L2. Assume we don't need to flush -- Cort */
564 *(unsigned char *)(PPLUS_L2_CONTROL_REG) |= 3;
566 #ifdef CONFIG_BLK_DEV_INITRD
568 ROOT_DEV = Root_RAM0;
571 #ifdef CONFIG_ROOT_NFS
574 ROOT_DEV = Root_SDA2;
577 printk(KERN_INFO "Motorola PowerPlus Platform\n");
579 "Port by MontaVista Software, Inc. (source@mvista.com)\n");
581 #ifdef CONFIG_VGA_CONSOLE
582 /* remap the VGA memory */
583 vgacon_remap_base = (unsigned long)ioremap(PPLUS_ISA_MEM_BASE,
585 conswitchp = &vga_con;
587 #ifdef CONFIG_PPCBUG_NVRAM
588 /* Read in NVRAM data */
591 /* if no bootargs, look in NVRAM */
592 if (cmd_line[0] == '\0') {
594 bootargs = prep_nvram_get_var("bootargs");
595 if (bootargs != NULL) {
596 strcpy(cmd_line, bootargs);
598 strcpy(saved_command_line, cmd_line);
603 ppc_md.progress("pplus_setup_arch: exit", 0);
606 static void pplus_restart(char *cmd)
608 unsigned long i = 10000;
612 /* set VIA IDE controller into native mode */
613 pplus_set_VIA_IDE_native();
615 /* set exception prefix high - to the prom */
616 _nmask_and_or_msr(0, MSR_IP);
618 /* make sure bit 0 (reset) is a 0 */
619 outb(inb(0x92) & ~1L, 0x92);
620 /* signal a reset to system control port A - soft reset */
621 outb(inb(0x92) | 1, 0x92);
625 panic("restart failed\n");
628 static void pplus_halt(void)
630 /* set exception prefix high - to the prom */
631 _nmask_and_or_msr(MSR_EE, MSR_IP);
633 /* make sure bit 0 (reset) is a 0 */
634 outb(inb(0x92) & ~1L, 0x92);
635 /* signal a reset to system control port A - soft reset */
636 outb(inb(0x92) | 1, 0x92);
644 static void pplus_power_off(void)
649 static unsigned int pplus_irq_canonicalize(u_int irq)
657 static void __init pplus_init_IRQ(void)
662 ppc_md.progress("init_irq: enter", 0);
664 OpenPIC_InitSenses = pplus_openpic_initsenses;
665 OpenPIC_NumInitSenses = sizeof(pplus_openpic_initsenses);
667 if (OpenPIC_Addr != NULL) {
669 openpic_set_sources(0, 16, OpenPIC_Addr + 0x10000);
670 openpic_init(NUM_8259_INTERRUPTS);
671 openpic_hookup_cascade(NUM_8259_INTERRUPTS, "82c59 cascade",
673 ppc_md.get_irq = openpic_get_irq;
676 for (i = 0; i < NUM_8259_INTERRUPTS; i++)
677 irq_desc[i].handler = &i8259_pic;
682 ppc_md.progress("init_irq: exit", 0);
685 #if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
689 static int pplus_ide_default_irq(unsigned long base)
701 static unsigned long pplus_ide_default_io_base(int index)
714 pplus_ide_init_hwif_ports(hw_regs_t * hw, unsigned long data_port,
715 unsigned long ctrl_port, int *irq)
717 unsigned long reg = data_port;
720 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
721 hw->io_ports[i] = reg;
726 hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port;
728 hw->io_ports[IDE_CONTROL_OFFSET] =
729 hw->io_ports[IDE_DATA_OFFSET] + 0x206;
732 *irq = pplus_ide_default_irq(data_port);
737 /* PowerPlus (MTX) support */
738 static int __init smp_pplus_probe(void)
740 extern int mot_multi;
743 openpic_request_IPIs();
751 static void __init smp_pplus_kick_cpu(int nr)
753 *(unsigned long *)KERNELBASE = nr;
754 asm volatile ("dcbf 0,%0"::"r" (KERNELBASE):"memory");
755 printk(KERN_INFO "CPU1 reset, waiting\n");
758 static void __init smp_pplus_setup_cpu(int cpu_nr)
761 do_openpic_setup_cpu();
764 static struct smp_ops_t pplus_smp_ops = {
765 smp_openpic_message_pass,
769 .give_timebase = smp_generic_give_timebase,
770 .take_timebase = smp_generic_take_timebase,
772 #endif /* CONFIG_SMP */
775 static void print_dbat(int idx, u32 bat)
780 sprintf(str, "DBAT%c%c = 0x%08x\n",
781 (char)((idx - DBAT0U) / 2) + '0', (idx & 1) ? 'L' : 'U', bat);
782 ppc_md.progress(str, 0);
785 #define DUMP_DBAT(x) \
787 u32 __temp = mfspr(x);\
788 print_dbat(x, __temp); \
791 static void dump_dbats(void)
793 if (ppc_md.progress) {
806 static unsigned long __init pplus_find_end_of_memory(void)
811 ppc_md.progress("pplus_find_end_of_memory", 0);
817 total = hawk_get_mem_size(PPLUS_HAWK_SMC_BASE);
821 static void __init pplus_map_io(void)
823 io_block_mapping(PPLUS_ISA_IO_BASE, PPLUS_ISA_IO_BASE, 0x10000000,
825 io_block_mapping(0xfef80000, 0xfef80000, 0x00080000, _PAGE_IO);
828 static void __init pplus_init2(void)
831 request_region(PREP_NVRAM_AS0, 0x8, "nvram");
833 request_region(0x20, 0x20, "pic1");
834 request_region(0xa0, 0x20, "pic2");
835 request_region(0x00, 0x20, "dma1");
836 request_region(0x40, 0x20, "timer");
837 request_region(0x80, 0x10, "dma page reg");
838 request_region(0xc0, 0x20, "dma2");
842 * Set BAT 2 to access 0x8000000 so progress messages will work and set BAT 3
843 * to 0xf0000000 to access Falcon/Raven or Hawk registers
845 static __inline__ void pplus_set_bat(void)
847 /* wait for all outstanding memory accesses to complete */
851 mtspr(SPRN_DBAT2U, 0x80001ffe);
852 mtspr(SPRN_DBAT2L, 0x8000002a);
853 mtspr(SPRN_DBAT3U, 0xf0001ffe);
854 mtspr(SPRN_DBAT3L, 0xf000002a);
856 /* wait for updates */
861 platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
862 unsigned long r6, unsigned long r7)
864 parse_bootinfo(find_bootinfo());
866 /* Map in board regs, etc. */
869 isa_io_base = PREP_ISA_IO_BASE;
870 isa_mem_base = PREP_ISA_MEM_BASE;
871 pci_dram_offset = PREP_PCI_DRAM_OFFSET;
872 ISA_DMA_THRESHOLD = 0x00ffffff;
873 DMA_MODE_READ = 0x44;
874 DMA_MODE_WRITE = 0x48;
876 ppc_md.setup_arch = pplus_setup_arch;
877 ppc_md.show_cpuinfo = pplus_show_cpuinfo;
878 ppc_md.irq_canonicalize = pplus_irq_canonicalize;
879 ppc_md.init_IRQ = pplus_init_IRQ;
880 /* this gets changed later on if we have an OpenPIC -- Cort */
881 ppc_md.get_irq = i8259_irq;
882 ppc_md.init = pplus_init2;
884 ppc_md.restart = pplus_restart;
885 ppc_md.power_off = pplus_power_off;
886 ppc_md.halt = pplus_halt;
888 TODC_INIT(TODC_TYPE_MK48T59, PREP_NVRAM_AS0, PREP_NVRAM_AS1,
891 ppc_md.time_init = todc_time_init;
892 ppc_md.set_rtc_time = todc_set_rtc_time;
893 ppc_md.get_rtc_time = todc_get_rtc_time;
894 ppc_md.calibrate_decr = todc_calibrate_decr;
895 ppc_md.nvram_read_val = todc_m48txx_read_val;
896 ppc_md.nvram_write_val = todc_m48txx_write_val;
898 ppc_md.find_end_of_memory = pplus_find_end_of_memory;
899 ppc_md.setup_io_mappings = pplus_map_io;
901 #if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
902 ppc_ide_md.default_irq = pplus_ide_default_irq;
903 ppc_ide_md.default_io_base = pplus_ide_default_io_base;
904 ppc_ide_md.ide_init_hwif = pplus_ide_init_hwif_ports;
907 #ifdef CONFIG_SERIAL_TEXT_DEBUG
908 ppc_md.progress = gen550_progress;
909 #endif /* CONFIG_SERIAL_TEXT_DEBUG */
911 ppc_md.kgdb_map_scc = gen550_kgdb_map_scc;
914 ppc_md.smp_ops = &pplus_smp_ops;
915 #endif /* CONFIG_SMP */