2 * arch/ppc/platforms/setup.c
4 * Copyright (C) 1995 Linus Torvalds
5 * Adapted from 'alpha' version by Gary Thomas
6 * Modified by Cort Dougan (cort@cs.nmt.edu)
8 * Support for PReP (Motorola MTX/MVME)
9 * by Troy Benjegerdes (hozer@drgw.net)
13 * bootup setup stuff..
16 #include <linux/config.h>
17 #include <linux/delay.h>
18 #include <linux/module.h>
19 #include <linux/errno.h>
20 #include <linux/sched.h>
21 #include <linux/kernel.h>
23 #include <linux/stddef.h>
24 #include <linux/unistd.h>
25 #include <linux/ptrace.h>
26 #include <linux/slab.h>
27 #include <linux/user.h>
28 #include <linux/a.out.h>
29 #include <linux/tty.h>
30 #include <linux/major.h>
31 #include <linux/interrupt.h>
32 #include <linux/reboot.h>
33 #include <linux/init.h>
34 #include <linux/initrd.h>
35 #include <linux/ioport.h>
36 #include <linux/console.h>
37 #include <linux/timex.h>
38 #include <linux/pci.h>
39 #include <linux/ide.h>
40 #include <linux/seq_file.h>
41 #include <linux/root_dev.h>
43 #include <asm/sections.h>
45 #include <asm/processor.h>
46 #include <asm/residual.h>
48 #include <asm/pgtable.h>
49 #include <asm/cache.h>
51 #include <asm/machdep.h>
52 #include <asm/mc146818rtc.h>
53 #include <asm/mk48t59.h>
54 #include <asm/prep_nvram.h>
55 #include <asm/raven.h>
58 #include <asm/mpc10x.h>
59 #include <asm/i8259.h>
60 #include <asm/open_pic.h>
61 #include <asm/pci-bridge.h>
66 unsigned char ucSystemType;
67 unsigned char ucBoardRev;
68 unsigned char ucBoardRevMaj, ucBoardRevMin;
70 extern unsigned char prep_nvram_read_val(int addr);
71 extern void prep_nvram_write_val(int addr,
73 extern unsigned char rs_nvram_read_val(int addr);
74 extern void rs_nvram_write_val(int addr,
76 extern void ibm_prep_init(void);
78 extern void prep_find_bridges(void);
82 extern void prep_sandalfoot_setup_pci(char *irq_edge_mask_lo, char *irq_edge_mask_hi);
83 extern void prep_thinkpad_setup_pci(char *irq_edge_mask_lo, char *irq_edge_mask_hi);
84 extern void prep_carolina_setup_pci(char *irq_edge_mask_lo, char *irq_edge_mask_hi);
85 extern void prep_tiger1_setup_pci(char *irq_edge_mask_lo, char *irq_edge_mask_hi);
88 #define cached_21 (((char *)(ppc_cached_irq_mask))[3])
89 #define cached_A1 (((char *)(ppc_cached_irq_mask))[2])
94 #ifdef CONFIG_SOUND_CS4232
95 long ppc_cs4232_dma, ppc_cs4232_dma2;
98 extern PTE *Hash, *Hash_end;
99 extern unsigned long Hash_size, Hash_mask;
100 extern int probingmem;
101 extern unsigned long loops_per_jiffy;
103 #ifdef CONFIG_SOUND_CS4232
104 EXPORT_SYMBOL(ppc_cs4232_dma);
105 EXPORT_SYMBOL(ppc_cs4232_dma2);
108 /* useful ISA ports */
109 #define PREP_SYSCTL 0x81c
110 /* present in the IBM reference design; possibly identical in Mot boxes: */
111 #define PREP_IBM_SIMM_ID 0x803 /* SIMM size: 32 or 8 MiB */
112 #define PREP_IBM_SIMM_PRESENCE 0x804
113 #define PREP_IBM_EQUIPMENT 0x80c
114 #define PREP_IBM_L2INFO 0x80d
115 #define PREP_IBM_PM1 0x82a /* power management register 1 */
116 #define PREP_IBM_PLANAR 0x852 /* planar ID - identifies the motherboard */
117 #define PREP_IBM_DISP 0x8c0 /* 4-digit LED display */
119 /* Equipment Present Register masks: */
120 #define PREP_IBM_EQUIPMENT_RESERVED 0x80
121 #define PREP_IBM_EQUIPMENT_SCSIFUSE 0x40
122 #define PREP_IBM_EQUIPMENT_L2_COPYBACK 0x08
123 #define PREP_IBM_EQUIPMENT_L2_256 0x04
124 #define PREP_IBM_EQUIPMENT_CPU 0x02
125 #define PREP_IBM_EQUIPMENT_L2 0x01
127 /* planar ID values: */
128 /* Sandalfoot/Sandalbow (6015/7020) */
129 #define PREP_IBM_SANDALFOOT 0xfc
130 /* Woodfield, Thinkpad 850/860 (6042/7249) */
131 #define PREP_IBM_THINKPAD 0xff /* planar ID unimplemented */
132 /* PowerSeries 830/850 (6050/6070) */
133 #define PREP_IBM_CAROLINA_IDE_0 0xf0
134 #define PREP_IBM_CAROLINA_IDE_1 0xf1
135 #define PREP_IBM_CAROLINA_IDE_2 0xf2
136 #define PREP_IBM_CAROLINA_IDE_3 0xf3
138 #define PREP_IBM_CAROLINA_SCSI_0 0xf4
139 #define PREP_IBM_CAROLINA_SCSI_1 0xf5
140 #define PREP_IBM_CAROLINA_SCSI_2 0xf6
141 #define PREP_IBM_CAROLINA_SCSI_3 0xf7 /* missing from Carolina Tech Spec */
142 /* Tiger1 (7043-140) */
143 #define PREP_IBM_TIGER1_133 0xd1
144 #define PREP_IBM_TIGER1_166 0xd2
145 #define PREP_IBM_TIGER1_180 0xd3
146 #define PREP_IBM_TIGER1_xxx 0xd4 /* unknown, but probably exists */
147 #define PREP_IBM_TIGER1_333 0xd5 /* missing from Tiger Tech Spec */
150 * set Motherboard_map_name, Motherboard_map, Motherboard_routes.
151 * return 8259 edge/level masks.
153 void (*setup_ibm_pci)(char *irq_lo, char *irq_hi);
155 extern char *Motherboard_map_name; /* for use in *_cpuinfo */
158 * As found in the PReP reference implementation.
159 * Used by Thinkpad, Sandalfoot (6015/7020), and all Motorola PReP.
162 prep_gen_enable_l2(void)
164 outb(inb(PREP_SYSCTL) | 0x3, PREP_SYSCTL);
167 /* Used by Carolina and Tiger1 */
169 prep_carolina_enable_l2(void)
171 outb(inb(PREP_SYSCTL) | 0xc0, PREP_SYSCTL);
174 /* cpuinfo code common to all IBM PReP */
176 prep_ibm_cpuinfo(struct seq_file *m)
178 unsigned int equip_reg = inb(PREP_IBM_EQUIPMENT);
180 seq_printf(m, "machine\t\t: PReP %s\n", Motherboard_map_name);
182 seq_printf(m, "upgrade cpu\t: ");
183 if (equip_reg & PREP_IBM_EQUIPMENT_CPU) {
184 seq_printf(m, "not ");
186 seq_printf(m, "present\n");
188 /* print info about the SCSI fuse */
189 seq_printf(m, "scsi fuse\t: ");
190 if (equip_reg & PREP_IBM_EQUIPMENT_SCSIFUSE)
193 seq_printf(m, "bad");
196 #ifdef CONFIG_PREP_RESIDUAL
197 /* print info about SIMMs */
198 if (res->ResidualLength != 0) {
200 seq_printf(m, "simms\t\t: ");
201 for (i = 0; (res->ActualNumMemories) && (i < MAX_MEMS); i++) {
202 if (res->Memories[i].SIMMSize != 0)
203 seq_printf(m, "%d:%ldMiB ", i,
204 (res->Memories[i].SIMMSize > 1024) ?
205 res->Memories[i].SIMMSize>>20 :
206 res->Memories[i].SIMMSize);
214 prep_sandalfoot_cpuinfo(struct seq_file *m)
216 unsigned int equip_reg = inb(PREP_IBM_EQUIPMENT);
220 /* report amount and type of L2 cache present */
221 seq_printf(m, "L2 cache\t: ");
222 if (equip_reg & PREP_IBM_EQUIPMENT_L2) {
223 seq_printf(m, "not present");
225 if (equip_reg & PREP_IBM_EQUIPMENT_L2_256)
226 seq_printf(m, "256KiB");
228 seq_printf(m, "unknown size");
230 if (equip_reg & PREP_IBM_EQUIPMENT_L2_COPYBACK)
231 seq_printf(m, ", copy-back");
233 seq_printf(m, ", write-through");
241 prep_thinkpad_cpuinfo(struct seq_file *m)
243 unsigned int equip_reg = inb(PREP_IBM_EQUIPMENT);
244 char *cpubus_speed, *pci_speed;
248 /* report amount and type of L2 cache present */
249 seq_printf(m, "l2 cache\t: ");
250 if ((equip_reg & 0x1) == 0) {
251 switch ((equip_reg & 0xc) >> 2) {
253 seq_printf(m, "128KiB look-aside 2-way write-through\n");
256 seq_printf(m, "512KiB look-aside direct-mapped write-back\n");
259 seq_printf(m, "256KiB look-aside 2-way write-through\n");
262 seq_printf(m, "256KiB look-aside direct-mapped write-back\n");
266 seq_printf(m, "not present\n");
269 /* report bus speeds because we can */
270 if ((equip_reg & 0x80) == 0) {
271 switch ((equip_reg & 0x30) >> 4) {
281 cpubus_speed = "unknown";
282 pci_speed = "unknown";
286 switch ((equip_reg & 0x30) >> 4) {
300 cpubus_speed = "unknown";
301 pci_speed = "unknown";
305 seq_printf(m, "60x bus\t\t: %sMHz\n", cpubus_speed);
306 seq_printf(m, "pci bus\t\t: %sMHz\n", pci_speed);
312 prep_carolina_cpuinfo(struct seq_file *m)
314 unsigned int equip_reg = inb(PREP_IBM_EQUIPMENT);
318 /* report amount and type of L2 cache present */
319 seq_printf(m, "l2 cache\t: ");
320 if ((equip_reg & 0x1) == 0) {
321 unsigned int l2_reg = inb(PREP_IBM_L2INFO);
324 if ((l2_reg & 0x60) == 0)
325 seq_printf(m, "256KiB");
326 else if ((l2_reg & 0x60) == 0x20)
327 seq_printf(m, "512KiB");
329 seq_printf(m, "unknown size");
332 if ((l2_reg & 0x3) == 0)
333 seq_printf(m, ", async");
334 else if ((l2_reg & 0x3) == 1)
335 seq_printf(m, ", sync");
337 seq_printf(m, ", unknown type");
341 seq_printf(m, "not present\n");
348 prep_tiger1_cpuinfo(struct seq_file *m)
350 unsigned int l2_reg = inb(PREP_IBM_L2INFO);
354 /* report amount and type of L2 cache present */
355 seq_printf(m, "l2 cache\t: ");
356 if ((l2_reg & 0xf) == 0xf) {
357 seq_printf(m, "not present\n");
360 seq_printf(m, "async, ");
362 seq_printf(m, "sync burst, ");
365 seq_printf(m, "parity, ");
367 seq_printf(m, "no parity, ");
369 switch (l2_reg & 0x3) {
371 seq_printf(m, "256KiB\n");
374 seq_printf(m, "512KiB\n");
377 seq_printf(m, "1MiB\n");
380 seq_printf(m, "unknown size\n");
389 /* Used by all Motorola PReP */
391 prep_mot_cpuinfo(struct seq_file *m)
393 unsigned int cachew = *((unsigned char *)CACHECRBA);
395 seq_printf(m, "machine\t\t: PReP %s\n", Motherboard_map_name);
397 /* report amount and type of L2 cache present */
398 seq_printf(m, "l2 cache\t: ");
399 switch (cachew & L2CACHE_MASK) {
401 seq_printf(m, "512KiB");
404 seq_printf(m, "256KiB");
407 seq_printf(m, "1MiB");
410 seq_printf(m, "none\n");
414 seq_printf(m, "%x\n", cachew);
417 seq_printf(m, ", parity %s",
418 (cachew & L2CACHE_PARITY)? "enabled" : "disabled");
420 seq_printf(m, " SRAM:");
422 switch ( ((cachew & 0xf0) >> 4) & ~(0x3) ) {
423 case 1: seq_printf(m, "synchronous, parity, flow-through\n");
425 case 2: seq_printf(m, "asynchronous, no parity\n");
427 case 3: seq_printf(m, "asynchronous, parity\n");
429 default:seq_printf(m, "synchronous, pipelined, no parity\n");
434 #ifdef CONFIG_PREP_RESIDUAL
435 /* print info about SIMMs */
436 if (res->ResidualLength != 0) {
438 seq_printf(m, "simms\t\t: ");
439 for (i = 0; (res->ActualNumMemories) && (i < MAX_MEMS); i++) {
440 if (res->Memories[i].SIMMSize != 0)
441 seq_printf(m, "%d:%ldM ", i,
442 (res->Memories[i].SIMMSize > 1024) ?
443 res->Memories[i].SIMMSize>>20 :
444 res->Memories[i].SIMMSize);
454 prep_tiger1_progress(char *msg, unsigned short code)
456 outw(code, PREP_IBM_DISP);
460 prep_restart(char *cmd)
462 #define PREP_SP92 0x92 /* Special Port 92 */
463 local_irq_disable(); /* no interrupts */
465 /* set exception prefix high - to the prom */
466 _nmask_and_or_msr(0, MSR_IP);
468 /* make sure bit 0 (reset) is a 0 */
469 outb( inb(PREP_SP92) & ~1L , PREP_SP92);
470 /* signal a reset to system control port A - soft reset */
471 outb( inb(PREP_SP92) | 1 , PREP_SP92);
481 local_irq_disable(); /* no interrupts */
483 /* set exception prefix high - to the prom */
484 _nmask_and_or_msr(0, MSR_IP);
490 /* Carrera is the power manager in the Thinkpads. Unfortunately not much is
491 * known about it, so we can't power down.
494 prep_carrera_poweroff(void)
500 * On most IBM PReP's, power management is handled by a Signetics 87c750
501 * behind the Utah component on the ISA bus. To access the 750 you must write
502 * a series of nibbles to port 0x82a (decoded by the Utah). This is described
503 * somewhat in the IBM Carolina Technical Specification.
507 utah_sig87c750_setbit(unsigned int bytenum, unsigned int bitnum, int value)
510 * byte1: 0 0 0 1 0 d a5 a4
511 * byte2: 0 0 0 1 a3 a2 a1 a0
513 * d = the bit's value, enabled or disabled
514 * (a5 a4 a3) = the byte number, minus 20
515 * (a2 a1 a0) = the bit number
517 * example: set the 5th bit of byte 21 (21.5)
518 * a5 a4 a3 = 001 (byte 1)
519 * a2 a1 a0 = 101 (bit 5)
521 * byte1 = 0001 0100 (0x14)
522 * byte2 = 0001 1101 (0x1d)
524 unsigned char byte1=0x10, byte2=0x10;
526 /* the 750's '20.0' is accessed as '0.0' through Utah (which adds 20) */
529 byte1 |= (!!value) << 2; /* set d */
530 byte1 |= (bytenum >> 1) & 0x3; /* set a5, a4 */
532 byte2 |= (bytenum & 0x1) << 3; /* set a3 */
533 byte2 |= bitnum & 0x7; /* set a2, a1, a0 */
535 outb(byte1, PREP_IBM_PM1); /* first nibble */
537 udelay(100); /* important: let controller recover */
539 outb(byte2, PREP_IBM_PM1); /* second nibble */
541 udelay(100); /* important: let controller recover */
545 prep_sig750_poweroff(void)
547 /* tweak the power manager found in most IBM PRePs (except Thinkpads) */
550 /* set exception prefix high - to the prom */
551 _nmask_and_or_msr(0, MSR_IP);
553 utah_sig87c750_setbit(21, 5, 1); /* set bit 21.5, "PMEXEC_OFF" */
560 prep_show_percpuinfo(struct seq_file *m, int i)
562 /* PREP's without residual data will give incorrect values here */
563 seq_printf(m, "clock\t\t: ");
564 #ifdef CONFIG_PREP_RESIDUAL
565 if (res->ResidualLength)
566 seq_printf(m, "%ldMHz\n",
567 (res->VitalProductData.ProcessorHz > 1024) ?
568 res->VitalProductData.ProcessorHz / 1000000 :
569 res->VitalProductData.ProcessorHz);
571 #endif /* CONFIG_PREP_RESIDUAL */
572 seq_printf(m, "???\n");
577 #ifdef CONFIG_SOUND_CS4232
578 static long __init masktoint(unsigned int i)
587 * ppc_cs4232_dma and ppc_cs4232_dma2 are used in include/asm/dma.h
588 * to distinguish sound dma-channels from others. This is because
589 * blocksize on 16 bit dma-channels 5,6,7 is 128k, but
590 * the cs4232.c uses 64k like on 8 bit dma-channels 0,1,2,3
593 static void __init prep_init_sound(void)
595 PPC_DEVICE *audiodevice = NULL;
598 * Get the needed resource informations from residual data.
601 #ifdef CONFIG_PREP_RESIDUAL
602 audiodevice = residual_find_device(~0, NULL, MultimediaController,
603 AudioController, -1, 0);
604 if (audiodevice != NULL) {
607 pkt = PnP_find_packet((unsigned char *)&res->DevicePnPHeap[audiodevice->AllocatedOffset],
610 ppc_cs4232_dma = masktoint(pkt->S5_Pack.DMAMask);
611 pkt = PnP_find_packet((unsigned char*)&res->DevicePnPHeap[audiodevice->AllocatedOffset],
614 ppc_cs4232_dma2 = masktoint(pkt->S5_Pack.DMAMask);
619 * These are the PReP specs' defaults for the cs4231. We use these
620 * as fallback incase we don't have residual data.
621 * At least the IBM Thinkpad 850 with IDE DMA Channels at 6 and 7
622 * will use the other values.
624 if (audiodevice == NULL) {
625 switch (_prep_type) {
628 ppc_cs4232_dma2 = -1;
637 * Find a way to push these informations to the cs4232 driver
638 * Give it out with printk, when not in cmd_line?
639 * Append it to cmd_line and saved_command_line?
640 * Format is cs4232=io,irq,dma,dma2
643 #endif /* CONFIG_SOUND_CS4232 */
646 * Fill out screen_info according to the residual data. This allows us to use
652 #if defined(CONFIG_PREP_RESIDUAL) && \
653 (defined(CONFIG_FB_VGA16) || defined(CONFIG_FB_VGA_16_MODULE) || \
654 defined(CONFIG_FB_VESA))
657 vgadev = residual_find_device(~0, NULL, DisplayController, SVGAController,
659 if (vgadev != NULL) {
662 pkt = PnP_find_large_vendor_packet(
663 (unsigned char *)&res->DevicePnPHeap[vgadev->AllocatedOffset],
664 0x04, 0); /* 0x04 = Display Tag */
666 unsigned char *ptr = (unsigned char *)pkt;
670 screen_info.orig_video_isVGA = VIDEO_TYPE_VLFB;
672 screen_info.lfb_depth = ptr[4] * 8;
674 screen_info.lfb_width = swab16(*(short *)(ptr+6));
675 screen_info.lfb_height = swab16(*(short *)(ptr+8));
676 screen_info.lfb_linelength = swab16(*(short *)(ptr+10));
678 screen_info.lfb_base = swab32(*(long *)(ptr+12));
679 screen_info.lfb_size = swab32(*(long *)(ptr+20)) / 65536;
683 #endif /* CONFIG_PREP_RESIDUAL */
687 prep_setup_arch(void)
692 /* init to some ~sane value until calibrate_delay() runs */
693 loops_per_jiffy = 50000000;
695 /* Lookup PCI host bridges */
698 /* Set up floppy in PS/2 mode */
699 outb(0x09, SIO_CONFIG_RA);
700 reg = inb(SIO_CONFIG_RD);
701 reg = (reg & 0x3F) | 0x40;
702 outb(reg, SIO_CONFIG_RD);
703 outb(reg, SIO_CONFIG_RD); /* Have to write twice to change! */
705 switch ( _prep_type )
708 reg = inb(PREP_IBM_PLANAR);
709 printk(KERN_INFO "IBM planar ID: %08x", reg);
711 case PREP_IBM_SANDALFOOT:
712 prep_gen_enable_l2();
713 setup_ibm_pci = prep_sandalfoot_setup_pci;
714 ppc_md.power_off = prep_sig750_poweroff;
715 ppc_md.show_cpuinfo = prep_sandalfoot_cpuinfo;
717 case PREP_IBM_THINKPAD:
718 prep_gen_enable_l2();
719 setup_ibm_pci = prep_thinkpad_setup_pci;
720 ppc_md.power_off = prep_carrera_poweroff;
721 ppc_md.show_cpuinfo = prep_thinkpad_cpuinfo;
724 printk(" -- unknown! Assuming Carolina");
725 case PREP_IBM_CAROLINA_IDE_0:
726 case PREP_IBM_CAROLINA_IDE_1:
727 case PREP_IBM_CAROLINA_IDE_2:
728 case PREP_IBM_CAROLINA_IDE_3:
730 case PREP_IBM_CAROLINA_SCSI_0:
731 case PREP_IBM_CAROLINA_SCSI_1:
732 case PREP_IBM_CAROLINA_SCSI_2:
733 case PREP_IBM_CAROLINA_SCSI_3:
734 prep_carolina_enable_l2();
735 setup_ibm_pci = prep_carolina_setup_pci;
736 ppc_md.power_off = prep_sig750_poweroff;
737 ppc_md.show_cpuinfo = prep_carolina_cpuinfo;
739 case PREP_IBM_TIGER1_133:
740 case PREP_IBM_TIGER1_166:
741 case PREP_IBM_TIGER1_180:
742 case PREP_IBM_TIGER1_xxx:
743 case PREP_IBM_TIGER1_333:
744 prep_carolina_enable_l2();
745 setup_ibm_pci = prep_tiger1_setup_pci;
746 ppc_md.power_off = prep_sig750_poweroff;
747 ppc_md.show_cpuinfo = prep_tiger1_cpuinfo;
748 ppc_md.progress = prep_tiger1_progress;
753 /* default root device */
755 ROOT_DEV = MKDEV(IDE0_MAJOR, 3);
757 ROOT_DEV = MKDEV(SCSI_DISK0_MAJOR, 3);
761 prep_gen_enable_l2();
762 ppc_md.power_off = prep_halt;
763 ppc_md.show_cpuinfo = prep_mot_cpuinfo;
765 #ifdef CONFIG_BLK_DEV_INITRD
767 ROOT_DEV = Root_RAM0;
770 #ifdef CONFIG_ROOT_NFS
773 ROOT_DEV = Root_SDA2;
778 /* Read in NVRAM data */
781 /* if no bootargs, look in NVRAM */
782 if ( cmd_line[0] == '\0' ) {
784 bootargs = prep_nvram_get_var("bootargs");
785 if (bootargs != NULL) {
786 strcpy(cmd_line, bootargs);
788 strcpy(saved_command_line, cmd_line);
792 #ifdef CONFIG_SOUND_CS4232
794 #endif /* CONFIG_SOUND_CS4232 */
798 switch (_prep_type) {
807 #ifdef CONFIG_VGA_CONSOLE
808 /* vgacon.c needs to know where we mapped IO memory in io_block_mapping() */
809 vgacon_remap_base = 0xf0000000;
810 conswitchp = &vga_con;
811 #elif defined(CONFIG_DUMMY_CONSOLE)
812 conswitchp = &dummy_con;
817 * First, see if we can get this information from the residual data.
818 * This is important on some IBM PReP systems. If we cannot, we let the
819 * TODC code handle doing this.
822 prep_calibrate_decr(void)
824 #ifdef CONFIG_PREP_RESIDUAL
825 unsigned long freq, divisor = 4;
827 if ( res->VitalProductData.ProcessorBusHz ) {
828 freq = res->VitalProductData.ProcessorBusHz;
829 printk("time_init: decrementer frequency = %lu.%.6lu MHz\n",
830 (freq/divisor)/1000000,
831 (freq/divisor)%1000000);
832 tb_to_us = mulhwu_scale_factor(freq/divisor, 1000000);
833 tb_ticks_per_jiffy = freq / HZ / divisor;
836 todc_calibrate_decr();
839 static unsigned int __prep
840 prep_irq_canonicalize(u_int irq)
856 unsigned int pci_viddid, pci_did;
858 if (OpenPIC_Addr != NULL) {
859 openpic_init(NUM_8259_INTERRUPTS);
860 /* We have a cascade on OpenPIC IRQ 0, Linux IRQ 16 */
861 openpic_hookup_cascade(NUM_8259_INTERRUPTS, "82c59 cascade",
864 for ( i = 0 ; i < NUM_8259_INTERRUPTS ; i++ )
865 irq_desc[i].handler = &i8259_pic;
866 /* If we have a Raven PCI bridge or a Hawk PCI bridge / Memory
867 * controller, we poll (as they have a different int-ack address). */
868 early_read_config_dword(0, 0, 0, PCI_VENDOR_ID, &pci_viddid);
869 pci_did = (pci_viddid & 0xffff0000) >> 16;
870 if (((pci_viddid & 0xffff) == PCI_VENDOR_ID_MOTOROLA)
871 && ((pci_did == PCI_DEVICE_ID_MOTOROLA_RAVEN)
872 || (pci_did == PCI_DEVICE_ID_MOTOROLA_HAWK)))
875 /* PCI interrupt ack address given in section 6.1.8 of the
876 * PReP specification. */
877 i8259_init(MPC10X_MAPA_PCI_INTACK_ADDR);
880 #if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
885 prep_ide_default_irq(unsigned long base)
888 case 0x1f0: return 13;
889 case 0x170: return 13;
890 case 0x1e8: return 11;
891 case 0x168: return 10;
892 case 0xfff0: return 14; /* MCP(N)750 ide0 */
893 case 0xffe0: return 15; /* MCP(N)750 ide1 */
898 static unsigned long __prep
899 prep_ide_default_io_base(int index)
902 case 0: return 0x1f0;
903 case 1: return 0x170;
904 case 2: return 0x1e8;
905 case 3: return 0x168;
913 /* PReP (MTX) support */
917 extern int mot_multi;
920 openpic_request_IPIs();
929 smp_prep_kick_cpu(int nr)
931 *(unsigned long *)KERNELBASE = nr;
932 asm volatile("dcbf 0,%0"::"r"(KERNELBASE):"memory");
933 printk("CPU1 released, waiting\n");
937 smp_prep_setup_cpu(int cpu_nr)
940 do_openpic_setup_cpu();
943 static struct smp_ops_t prep_smp_ops __prepdata = {
944 smp_openpic_message_pass,
948 .give_timebase = smp_generic_give_timebase,
949 .take_timebase = smp_generic_take_timebase,
951 #endif /* CONFIG_SMP */
954 * Setup the bat mappings we're going to load that cover
955 * the io areas. RAM was mapped by mapin_ram().
961 io_block_mapping(0x80000000, PREP_ISA_IO_BASE, 0x10000000, _PAGE_IO);
962 io_block_mapping(0xf0000000, PREP_ISA_MEM_BASE, 0x08000000, _PAGE_IO);
966 prep_request_io(void)
968 if (_machine == _MACH_prep) {
970 request_region(PREP_NVRAM_AS0, 0x8, "nvram");
972 request_region(0x00,0x20,"dma1");
973 request_region(0x40,0x20,"timer");
974 request_region(0x80,0x10,"dma page reg");
975 request_region(0xc0,0x20,"dma2");
981 device_initcall(prep_request_io);
984 prep_init(unsigned long r3, unsigned long r4, unsigned long r5,
985 unsigned long r6, unsigned long r7)
987 #ifdef CONFIG_PREP_RESIDUAL
988 /* make a copy of residual data */
990 memcpy((void *)res,(void *)(r3+KERNELBASE),
995 isa_io_base = PREP_ISA_IO_BASE;
996 isa_mem_base = PREP_ISA_MEM_BASE;
997 pci_dram_offset = PREP_PCI_DRAM_OFFSET;
998 ISA_DMA_THRESHOLD = 0x00ffffff;
999 DMA_MODE_READ = 0x44;
1000 DMA_MODE_WRITE = 0x48;
1002 /* figure out what kind of prep workstation we are */
1003 #ifdef CONFIG_PREP_RESIDUAL
1004 if ( res->ResidualLength != 0 ) {
1005 if ( !strncmp(res->VitalProductData.PrintableModel,"IBM",3) )
1006 _prep_type = _PREP_IBM;
1008 _prep_type = _PREP_Motorola;
1009 } else /* assume motorola if no residual (netboot?) */
1012 _prep_type = _PREP_Motorola;
1015 ppc_md.setup_arch = prep_setup_arch;
1016 ppc_md.show_percpuinfo = prep_show_percpuinfo;
1017 ppc_md.show_cpuinfo = NULL; /* set in prep_setup_arch() */
1018 ppc_md.irq_canonicalize = prep_irq_canonicalize;
1019 ppc_md.init_IRQ = prep_init_IRQ;
1020 /* this gets changed later on if we have an OpenPIC -- Cort */
1021 ppc_md.get_irq = i8259_irq;
1023 ppc_md.restart = prep_restart;
1024 ppc_md.power_off = NULL; /* set in prep_setup_arch() */
1025 ppc_md.halt = prep_halt;
1027 ppc_md.nvram_read_val = prep_nvram_read_val;
1028 ppc_md.nvram_write_val = prep_nvram_write_val;
1030 ppc_md.time_init = todc_time_init;
1031 if (_prep_type == _PREP_IBM) {
1032 ppc_md.rtc_read_val = todc_mc146818_read_val;
1033 ppc_md.rtc_write_val = todc_mc146818_write_val;
1034 TODC_INIT(TODC_TYPE_MC146818, RTC_PORT(0), NULL, RTC_PORT(1),
1037 TODC_INIT(TODC_TYPE_MK48T59, PREP_NVRAM_AS0, PREP_NVRAM_AS1,
1038 PREP_NVRAM_DATA, 8);
1041 ppc_md.calibrate_decr = prep_calibrate_decr;
1042 ppc_md.set_rtc_time = todc_set_rtc_time;
1043 ppc_md.get_rtc_time = todc_get_rtc_time;
1045 ppc_md.setup_io_mappings = prep_map_io;
1047 #if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
1048 ppc_ide_md.default_irq = prep_ide_default_irq;
1049 ppc_ide_md.default_io_base = prep_ide_default_io_base;
1053 ppc_md.smp_ops = &prep_smp_ops;
1054 #endif /* CONFIG_SMP */