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);
79 extern char saved_command_line[];
83 extern void prep_sandalfoot_setup_pci(char *irq_edge_mask_lo, char *irq_edge_mask_hi);
84 extern void prep_thinkpad_setup_pci(char *irq_edge_mask_lo, char *irq_edge_mask_hi);
85 extern void prep_carolina_setup_pci(char *irq_edge_mask_lo, char *irq_edge_mask_hi);
86 extern void prep_tiger1_setup_pci(char *irq_edge_mask_lo, char *irq_edge_mask_hi);
89 #define cached_21 (((char *)(ppc_cached_irq_mask))[3])
90 #define cached_A1 (((char *)(ppc_cached_irq_mask))[2])
95 #ifdef CONFIG_SOUND_CS4232
96 long ppc_cs4232_dma, ppc_cs4232_dma2;
99 extern PTE *Hash, *Hash_end;
100 extern unsigned long Hash_size, Hash_mask;
101 extern int probingmem;
102 extern unsigned long loops_per_jiffy;
104 #ifdef CONFIG_SOUND_CS4232
105 EXPORT_SYMBOL(ppc_cs4232_dma);
106 EXPORT_SYMBOL(ppc_cs4232_dma2);
109 /* useful ISA ports */
110 #define PREP_SYSCTL 0x81c
111 /* present in the IBM reference design; possibly identical in Mot boxes: */
112 #define PREP_IBM_SIMM_ID 0x803 /* SIMM size: 32 or 8 MiB */
113 #define PREP_IBM_SIMM_PRESENCE 0x804
114 #define PREP_IBM_EQUIPMENT 0x80c
115 #define PREP_IBM_L2INFO 0x80d
116 #define PREP_IBM_PM1 0x82a /* power management register 1 */
117 #define PREP_IBM_PLANAR 0x852 /* planar ID - identifies the motherboard */
118 #define PREP_IBM_DISP 0x8c0 /* 4-digit LED display */
120 /* Equipment Present Register masks: */
121 #define PREP_IBM_EQUIPMENT_RESERVED 0x80
122 #define PREP_IBM_EQUIPMENT_SCSIFUSE 0x40
123 #define PREP_IBM_EQUIPMENT_L2_COPYBACK 0x08
124 #define PREP_IBM_EQUIPMENT_L2_256 0x04
125 #define PREP_IBM_EQUIPMENT_CPU 0x02
126 #define PREP_IBM_EQUIPMENT_L2 0x01
128 /* planar ID values: */
129 /* Sandalfoot/Sandalbow (6015/7020) */
130 #define PREP_IBM_SANDALFOOT 0xfc
131 /* Woodfield, Thinkpad 850/860 (6042/7249) */
132 #define PREP_IBM_THINKPAD 0xff /* planar ID unimplemented */
133 /* PowerSeries 830/850 (6050/6070) */
134 #define PREP_IBM_CAROLINA_IDE_0 0xf0
135 #define PREP_IBM_CAROLINA_IDE_1 0xf1
136 #define PREP_IBM_CAROLINA_IDE_2 0xf2
137 #define PREP_IBM_CAROLINA_IDE_3 0xf3
139 #define PREP_IBM_CAROLINA_SCSI_0 0xf4
140 #define PREP_IBM_CAROLINA_SCSI_1 0xf5
141 #define PREP_IBM_CAROLINA_SCSI_2 0xf6
142 #define PREP_IBM_CAROLINA_SCSI_3 0xf7 /* missing from Carolina Tech Spec */
143 /* Tiger1 (7043-140) */
144 #define PREP_IBM_TIGER1_133 0xd1
145 #define PREP_IBM_TIGER1_166 0xd2
146 #define PREP_IBM_TIGER1_180 0xd3
147 #define PREP_IBM_TIGER1_xxx 0xd4 /* unknown, but probably exists */
148 #define PREP_IBM_TIGER1_333 0xd5 /* missing from Tiger Tech Spec */
151 * set Motherboard_map_name, Motherboard_map, Motherboard_routes.
152 * return 8259 edge/level masks.
154 void (*setup_ibm_pci)(char *irq_lo, char *irq_hi);
156 extern char *Motherboard_map_name; /* for use in *_cpuinfo */
159 * As found in the PReP reference implementation.
160 * Used by Thinkpad, Sandalfoot (6015/7020), and all Motorola PReP.
163 prep_gen_enable_l2(void)
165 outb(inb(PREP_SYSCTL) | 0x3, PREP_SYSCTL);
168 /* Used by Carolina and Tiger1 */
170 prep_carolina_enable_l2(void)
172 outb(inb(PREP_SYSCTL) | 0xc0, PREP_SYSCTL);
175 /* cpuinfo code common to all IBM PReP */
177 prep_ibm_cpuinfo(struct seq_file *m)
179 unsigned int equip_reg = inb(PREP_IBM_EQUIPMENT);
181 seq_printf(m, "machine\t\t: PReP %s\n", Motherboard_map_name);
183 seq_printf(m, "upgrade cpu\t: ");
184 if (equip_reg & PREP_IBM_EQUIPMENT_CPU) {
185 seq_printf(m, "not ");
187 seq_printf(m, "present\n");
189 /* print info about the SCSI fuse */
190 seq_printf(m, "scsi fuse\t: ");
191 if (equip_reg & PREP_IBM_EQUIPMENT_SCSIFUSE)
194 seq_printf(m, "bad");
197 #ifdef CONFIG_PREP_RESIDUAL
198 /* print info about SIMMs */
199 if (res->ResidualLength != 0) {
201 seq_printf(m, "simms\t\t: ");
202 for (i = 0; (res->ActualNumMemories) && (i < MAX_MEMS); i++) {
203 if (res->Memories[i].SIMMSize != 0)
204 seq_printf(m, "%d:%ldMiB ", i,
205 (res->Memories[i].SIMMSize > 1024) ?
206 res->Memories[i].SIMMSize>>20 :
207 res->Memories[i].SIMMSize);
215 prep_sandalfoot_cpuinfo(struct seq_file *m)
217 unsigned int equip_reg = inb(PREP_IBM_EQUIPMENT);
221 /* report amount and type of L2 cache present */
222 seq_printf(m, "L2 cache\t: ");
223 if (equip_reg & PREP_IBM_EQUIPMENT_L2) {
224 seq_printf(m, "not present");
226 if (equip_reg & PREP_IBM_EQUIPMENT_L2_256)
227 seq_printf(m, "256KiB");
229 seq_printf(m, "unknown size");
231 if (equip_reg & PREP_IBM_EQUIPMENT_L2_COPYBACK)
232 seq_printf(m, ", copy-back");
234 seq_printf(m, ", write-through");
242 prep_thinkpad_cpuinfo(struct seq_file *m)
244 unsigned int equip_reg = inb(PREP_IBM_EQUIPMENT);
245 char *cpubus_speed, *pci_speed;
249 /* report amount and type of L2 cache present */
250 seq_printf(m, "l2 cache\t: ");
251 if ((equip_reg & 0x1) == 0) {
252 switch ((equip_reg & 0xc) >> 2) {
254 seq_printf(m, "128KiB look-aside 2-way write-through\n");
257 seq_printf(m, "512KiB look-aside direct-mapped write-back\n");
260 seq_printf(m, "256KiB look-aside 2-way write-through\n");
263 seq_printf(m, "256KiB look-aside direct-mapped write-back\n");
267 seq_printf(m, "not present\n");
270 /* report bus speeds because we can */
271 if ((equip_reg & 0x80) == 0) {
272 switch ((equip_reg & 0x30) >> 4) {
282 cpubus_speed = "unknown";
283 pci_speed = "unknown";
287 switch ((equip_reg & 0x30) >> 4) {
301 cpubus_speed = "unknown";
302 pci_speed = "unknown";
306 seq_printf(m, "60x bus\t\t: %sMHz\n", cpubus_speed);
307 seq_printf(m, "pci bus\t\t: %sMHz\n", pci_speed);
313 prep_carolina_cpuinfo(struct seq_file *m)
315 unsigned int equip_reg = inb(PREP_IBM_EQUIPMENT);
319 /* report amount and type of L2 cache present */
320 seq_printf(m, "l2 cache\t: ");
321 if ((equip_reg & 0x1) == 0) {
322 unsigned int l2_reg = inb(PREP_IBM_L2INFO);
325 if ((l2_reg & 0x60) == 0)
326 seq_printf(m, "256KiB");
327 else if ((l2_reg & 0x60) == 0x20)
328 seq_printf(m, "512KiB");
330 seq_printf(m, "unknown size");
333 if ((l2_reg & 0x3) == 0)
334 seq_printf(m, ", async");
335 else if ((l2_reg & 0x3) == 1)
336 seq_printf(m, ", sync");
338 seq_printf(m, ", unknown type");
342 seq_printf(m, "not present\n");
349 prep_tiger1_cpuinfo(struct seq_file *m)
351 unsigned int l2_reg = inb(PREP_IBM_L2INFO);
355 /* report amount and type of L2 cache present */
356 seq_printf(m, "l2 cache\t: ");
357 if ((l2_reg & 0xf) == 0xf) {
358 seq_printf(m, "not present\n");
361 seq_printf(m, "async, ");
363 seq_printf(m, "sync burst, ");
366 seq_printf(m, "parity, ");
368 seq_printf(m, "no parity, ");
370 switch (l2_reg & 0x3) {
372 seq_printf(m, "256KiB\n");
375 seq_printf(m, "512KiB\n");
378 seq_printf(m, "1MiB\n");
381 seq_printf(m, "unknown size\n");
390 /* Used by all Motorola PReP */
392 prep_mot_cpuinfo(struct seq_file *m)
394 unsigned int cachew = *((unsigned char *)CACHECRBA);
396 seq_printf(m, "machine\t\t: PReP %s\n", Motherboard_map_name);
398 /* report amount and type of L2 cache present */
399 seq_printf(m, "l2 cache\t: ");
400 switch (cachew & L2CACHE_MASK) {
402 seq_printf(m, "512KiB");
405 seq_printf(m, "256KiB");
408 seq_printf(m, "1MiB");
411 seq_printf(m, "none\n");
415 seq_printf(m, "%x\n", cachew);
418 seq_printf(m, ", parity %s",
419 (cachew & L2CACHE_PARITY)? "enabled" : "disabled");
421 seq_printf(m, " SRAM:");
423 switch ( ((cachew & 0xf0) >> 4) & ~(0x3) ) {
424 case 1: seq_printf(m, "synchronous, parity, flow-through\n");
426 case 2: seq_printf(m, "asynchronous, no parity\n");
428 case 3: seq_printf(m, "asynchronous, parity\n");
430 default:seq_printf(m, "synchronous, pipelined, no parity\n");
435 #ifdef CONFIG_PREP_RESIDUAL
436 /* print info about SIMMs */
437 if (res->ResidualLength != 0) {
439 seq_printf(m, "simms\t\t: ");
440 for (i = 0; (res->ActualNumMemories) && (i < MAX_MEMS); i++) {
441 if (res->Memories[i].SIMMSize != 0)
442 seq_printf(m, "%d:%ldM ", i,
443 (res->Memories[i].SIMMSize > 1024) ?
444 res->Memories[i].SIMMSize>>20 :
445 res->Memories[i].SIMMSize);
455 prep_tiger1_progress(char *msg, unsigned short code)
457 outw(code, PREP_IBM_DISP);
461 prep_restart(char *cmd)
463 #define PREP_SP92 0x92 /* Special Port 92 */
464 local_irq_disable(); /* no interrupts */
466 /* set exception prefix high - to the prom */
467 _nmask_and_or_msr(0, MSR_IP);
469 /* make sure bit 0 (reset) is a 0 */
470 outb( inb(PREP_SP92) & ~1L , PREP_SP92);
471 /* signal a reset to system control port A - soft reset */
472 outb( inb(PREP_SP92) | 1 , PREP_SP92);
482 local_irq_disable(); /* no interrupts */
484 /* set exception prefix high - to the prom */
485 _nmask_and_or_msr(0, MSR_IP);
491 /* Carrera is the power manager in the Thinkpads. Unfortunately not much is
492 * known about it, so we can't power down.
495 prep_carrera_poweroff(void)
501 * On most IBM PReP's, power management is handled by a Signetics 87c750
502 * behind the Utah component on the ISA bus. To access the 750 you must write
503 * a series of nibbles to port 0x82a (decoded by the Utah). This is described
504 * somewhat in the IBM Carolina Technical Specification.
508 utah_sig87c750_setbit(unsigned int bytenum, unsigned int bitnum, int value)
511 * byte1: 0 0 0 1 0 d a5 a4
512 * byte2: 0 0 0 1 a3 a2 a1 a0
514 * d = the bit's value, enabled or disabled
515 * (a5 a4 a3) = the byte number, minus 20
516 * (a2 a1 a0) = the bit number
518 * example: set the 5th bit of byte 21 (21.5)
519 * a5 a4 a3 = 001 (byte 1)
520 * a2 a1 a0 = 101 (bit 5)
522 * byte1 = 0001 0100 (0x14)
523 * byte2 = 0001 1101 (0x1d)
525 unsigned char byte1=0x10, byte2=0x10;
527 /* the 750's '20.0' is accessed as '0.0' through Utah (which adds 20) */
530 byte1 |= (!!value) << 2; /* set d */
531 byte1 |= (bytenum >> 1) & 0x3; /* set a5, a4 */
533 byte2 |= (bytenum & 0x1) << 3; /* set a3 */
534 byte2 |= bitnum & 0x7; /* set a2, a1, a0 */
536 outb(byte1, PREP_IBM_PM1); /* first nibble */
538 udelay(100); /* important: let controller recover */
540 outb(byte2, PREP_IBM_PM1); /* second nibble */
542 udelay(100); /* important: let controller recover */
546 prep_sig750_poweroff(void)
548 /* tweak the power manager found in most IBM PRePs (except Thinkpads) */
551 /* set exception prefix high - to the prom */
552 _nmask_and_or_msr(0, MSR_IP);
554 utah_sig87c750_setbit(21, 5, 1); /* set bit 21.5, "PMEXEC_OFF" */
561 prep_show_percpuinfo(struct seq_file *m, int i)
563 /* PREP's without residual data will give incorrect values here */
564 seq_printf(m, "clock\t\t: ");
565 #ifdef CONFIG_PREP_RESIDUAL
566 if (res->ResidualLength)
567 seq_printf(m, "%ldMHz\n",
568 (res->VitalProductData.ProcessorHz > 1024) ?
569 res->VitalProductData.ProcessorHz / 1000000 :
570 res->VitalProductData.ProcessorHz);
572 #endif /* CONFIG_PREP_RESIDUAL */
573 seq_printf(m, "???\n");
578 #ifdef CONFIG_SOUND_CS4232
579 static long __init masktoint(unsigned int i)
588 * ppc_cs4232_dma and ppc_cs4232_dma2 are used in include/asm/dma.h
589 * to distinguish sound dma-channels from others. This is because
590 * blocksize on 16 bit dma-channels 5,6,7 is 128k, but
591 * the cs4232.c uses 64k like on 8 bit dma-channels 0,1,2,3
594 static void __init prep_init_sound(void)
596 PPC_DEVICE *audiodevice = NULL;
599 * Get the needed resource informations from residual data.
602 #ifdef CONFIG_PREP_RESIDUAL
603 audiodevice = residual_find_device(~0, NULL, MultimediaController,
604 AudioController, -1, 0);
605 if (audiodevice != NULL) {
608 pkt = PnP_find_packet((unsigned char *)&res->DevicePnPHeap[audiodevice->AllocatedOffset],
611 ppc_cs4232_dma = masktoint(pkt->S5_Pack.DMAMask);
612 pkt = PnP_find_packet((unsigned char*)&res->DevicePnPHeap[audiodevice->AllocatedOffset],
615 ppc_cs4232_dma2 = masktoint(pkt->S5_Pack.DMAMask);
620 * These are the PReP specs' defaults for the cs4231. We use these
621 * as fallback incase we don't have residual data.
622 * At least the IBM Thinkpad 850 with IDE DMA Channels at 6 and 7
623 * will use the other values.
625 if (audiodevice == NULL) {
626 switch (_prep_type) {
629 ppc_cs4232_dma2 = -1;
638 * Find a way to push these informations to the cs4232 driver
639 * Give it out with printk, when not in cmd_line?
640 * Append it to cmd_line and saved_command_line?
641 * Format is cs4232=io,irq,dma,dma2
644 #endif /* CONFIG_SOUND_CS4232 */
647 * Fill out screen_info according to the residual data. This allows us to use
653 #if defined(CONFIG_PREP_RESIDUAL) && \
654 (defined(CONFIG_FB_VGA16) || defined(CONFIG_FB_VGA_16_MODULE) || \
655 defined(CONFIG_FB_VESA))
658 vgadev = residual_find_device(~0, NULL, DisplayController, SVGAController,
660 if (vgadev != NULL) {
663 pkt = PnP_find_large_vendor_packet(
664 (unsigned char *)&res->DevicePnPHeap[vgadev->AllocatedOffset],
665 0x04, 0); /* 0x04 = Display Tag */
667 unsigned char *ptr = (unsigned char *)pkt;
671 screen_info.orig_video_isVGA = VIDEO_TYPE_VLFB;
673 screen_info.lfb_depth = ptr[4] * 8;
675 screen_info.lfb_width = swab16(*(short *)(ptr+6));
676 screen_info.lfb_height = swab16(*(short *)(ptr+8));
677 screen_info.lfb_linelength = swab16(*(short *)(ptr+10));
679 screen_info.lfb_base = swab32(*(long *)(ptr+12));
680 screen_info.lfb_size = swab32(*(long *)(ptr+20)) / 65536;
684 #endif /* CONFIG_PREP_RESIDUAL */
688 prep_setup_arch(void)
693 /* init to some ~sane value until calibrate_delay() runs */
694 loops_per_jiffy = 50000000;
696 /* Lookup PCI host bridges */
699 /* Set up floppy in PS/2 mode */
700 outb(0x09, SIO_CONFIG_RA);
701 reg = inb(SIO_CONFIG_RD);
702 reg = (reg & 0x3F) | 0x40;
703 outb(reg, SIO_CONFIG_RD);
704 outb(reg, SIO_CONFIG_RD); /* Have to write twice to change! */
706 switch ( _prep_type )
709 reg = inb(PREP_IBM_PLANAR);
710 printk(KERN_INFO "IBM planar ID: %08x", reg);
712 case PREP_IBM_SANDALFOOT:
713 prep_gen_enable_l2();
714 setup_ibm_pci = prep_sandalfoot_setup_pci;
715 ppc_md.power_off = prep_sig750_poweroff;
716 ppc_md.show_cpuinfo = prep_sandalfoot_cpuinfo;
718 case PREP_IBM_THINKPAD:
719 prep_gen_enable_l2();
720 setup_ibm_pci = prep_thinkpad_setup_pci;
721 ppc_md.power_off = prep_carrera_poweroff;
722 ppc_md.show_cpuinfo = prep_thinkpad_cpuinfo;
725 printk(" -- unknown! Assuming Carolina");
726 case PREP_IBM_CAROLINA_IDE_0:
727 case PREP_IBM_CAROLINA_IDE_1:
728 case PREP_IBM_CAROLINA_IDE_2:
729 case PREP_IBM_CAROLINA_IDE_3:
731 case PREP_IBM_CAROLINA_SCSI_0:
732 case PREP_IBM_CAROLINA_SCSI_1:
733 case PREP_IBM_CAROLINA_SCSI_2:
734 case PREP_IBM_CAROLINA_SCSI_3:
735 prep_carolina_enable_l2();
736 setup_ibm_pci = prep_carolina_setup_pci;
737 ppc_md.power_off = prep_sig750_poweroff;
738 ppc_md.show_cpuinfo = prep_carolina_cpuinfo;
740 case PREP_IBM_TIGER1_133:
741 case PREP_IBM_TIGER1_166:
742 case PREP_IBM_TIGER1_180:
743 case PREP_IBM_TIGER1_xxx:
744 case PREP_IBM_TIGER1_333:
745 prep_carolina_enable_l2();
746 setup_ibm_pci = prep_tiger1_setup_pci;
747 ppc_md.power_off = prep_sig750_poweroff;
748 ppc_md.show_cpuinfo = prep_tiger1_cpuinfo;
749 ppc_md.progress = prep_tiger1_progress;
754 /* default root device */
756 ROOT_DEV = MKDEV(IDE0_MAJOR, 3);
758 ROOT_DEV = MKDEV(SCSI_DISK0_MAJOR, 3);
762 prep_gen_enable_l2();
763 ppc_md.power_off = prep_halt;
764 ppc_md.show_cpuinfo = prep_mot_cpuinfo;
766 #ifdef CONFIG_BLK_DEV_INITRD
768 ROOT_DEV = Root_RAM0;
771 #ifdef CONFIG_ROOT_NFS
774 ROOT_DEV = Root_SDA2;
779 /* Read in NVRAM data */
782 /* if no bootargs, look in NVRAM */
783 if ( cmd_line[0] == '\0' ) {
785 bootargs = prep_nvram_get_var("bootargs");
786 if (bootargs != NULL) {
787 strcpy(cmd_line, bootargs);
789 strcpy(saved_command_line, cmd_line);
793 #ifdef CONFIG_SOUND_CS4232
795 #endif /* CONFIG_SOUND_CS4232 */
799 switch (_prep_type) {
808 #ifdef CONFIG_VGA_CONSOLE
809 /* vgacon.c needs to know where we mapped IO memory in io_block_mapping() */
810 vgacon_remap_base = 0xf0000000;
811 conswitchp = &vga_con;
812 #elif defined(CONFIG_DUMMY_CONSOLE)
813 conswitchp = &dummy_con;
818 * First, see if we can get this information from the residual data.
819 * This is important on some IBM PReP systems. If we cannot, we let the
820 * TODC code handle doing this.
823 prep_calibrate_decr(void)
825 #ifdef CONFIG_PREP_RESIDUAL
826 unsigned long freq, divisor = 4;
828 if ( res->VitalProductData.ProcessorBusHz ) {
829 freq = res->VitalProductData.ProcessorBusHz;
830 printk("time_init: decrementer frequency = %lu.%.6lu MHz\n",
831 (freq/divisor)/1000000,
832 (freq/divisor)%1000000);
833 tb_to_us = mulhwu_scale_factor(freq/divisor, 1000000);
834 tb_ticks_per_jiffy = freq / HZ / divisor;
837 todc_calibrate_decr();
840 static unsigned int __prep
841 prep_irq_canonicalize(u_int irq)
857 unsigned int pci_viddid, pci_did;
859 if (OpenPIC_Addr != NULL) {
860 openpic_init(NUM_8259_INTERRUPTS);
861 /* We have a cascade on OpenPIC IRQ 0, Linux IRQ 16 */
862 openpic_hookup_cascade(NUM_8259_INTERRUPTS, "82c59 cascade",
865 for ( i = 0 ; i < NUM_8259_INTERRUPTS ; i++ )
866 irq_desc[i].handler = &i8259_pic;
867 /* If we have a Raven PCI bridge or a Hawk PCI bridge / Memory
868 * controller, we poll (as they have a different int-ack address). */
869 early_read_config_dword(0, 0, 0, PCI_VENDOR_ID, &pci_viddid);
870 pci_did = (pci_viddid & 0xffff0000) >> 16;
871 if (((pci_viddid & 0xffff) == PCI_VENDOR_ID_MOTOROLA)
872 && ((pci_did == PCI_DEVICE_ID_MOTOROLA_RAVEN)
873 || (pci_did == PCI_DEVICE_ID_MOTOROLA_HAWK)))
876 /* PCI interrupt ack address given in section 6.1.8 of the
877 * PReP specification. */
878 i8259_init(MPC10X_MAPA_PCI_INTACK_ADDR);
881 #if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
886 prep_ide_default_irq(unsigned long base)
889 case 0x1f0: return 13;
890 case 0x170: return 13;
891 case 0x1e8: return 11;
892 case 0x168: return 10;
893 case 0xfff0: return 14; /* MCP(N)750 ide0 */
894 case 0xffe0: return 15; /* MCP(N)750 ide1 */
899 static unsigned long __prep
900 prep_ide_default_io_base(int index)
903 case 0: return 0x1f0;
904 case 1: return 0x170;
905 case 2: return 0x1e8;
906 case 3: return 0x168;
914 /* PReP (MTX) support */
918 extern int mot_multi;
921 openpic_request_IPIs();
930 smp_prep_kick_cpu(int nr)
932 *(unsigned long *)KERNELBASE = nr;
933 asm volatile("dcbf 0,%0"::"r"(KERNELBASE):"memory");
934 printk("CPU1 released, waiting\n");
938 smp_prep_setup_cpu(int cpu_nr)
941 do_openpic_setup_cpu();
944 static struct smp_ops_t prep_smp_ops __prepdata = {
945 smp_openpic_message_pass,
949 .give_timebase = smp_generic_give_timebase,
950 .take_timebase = smp_generic_take_timebase,
952 #endif /* CONFIG_SMP */
955 * Setup the bat mappings we're going to load that cover
956 * the io areas. RAM was mapped by mapin_ram().
962 io_block_mapping(0x80000000, PREP_ISA_IO_BASE, 0x10000000, _PAGE_IO);
963 io_block_mapping(0xf0000000, PREP_ISA_MEM_BASE, 0x08000000, _PAGE_IO);
967 prep_request_io(void)
969 if (_machine == _MACH_prep) {
971 request_region(PREP_NVRAM_AS0, 0x8, "nvram");
973 request_region(0x00,0x20,"dma1");
974 request_region(0x40,0x20,"timer");
975 request_region(0x80,0x10,"dma page reg");
976 request_region(0xc0,0x20,"dma2");
982 device_initcall(prep_request_io);
985 prep_init(unsigned long r3, unsigned long r4, unsigned long r5,
986 unsigned long r6, unsigned long r7)
988 #ifdef CONFIG_PREP_RESIDUAL
989 /* make a copy of residual data */
991 memcpy((void *)res,(void *)(r3+KERNELBASE),
996 isa_io_base = PREP_ISA_IO_BASE;
997 isa_mem_base = PREP_ISA_MEM_BASE;
998 pci_dram_offset = PREP_PCI_DRAM_OFFSET;
999 ISA_DMA_THRESHOLD = 0x00ffffff;
1000 DMA_MODE_READ = 0x44;
1001 DMA_MODE_WRITE = 0x48;
1003 /* figure out what kind of prep workstation we are */
1004 #ifdef CONFIG_PREP_RESIDUAL
1005 if ( res->ResidualLength != 0 ) {
1006 if ( !strncmp(res->VitalProductData.PrintableModel,"IBM",3) )
1007 _prep_type = _PREP_IBM;
1009 _prep_type = _PREP_Motorola;
1010 } else /* assume motorola if no residual (netboot?) */
1013 _prep_type = _PREP_Motorola;
1016 ppc_md.setup_arch = prep_setup_arch;
1017 ppc_md.show_percpuinfo = prep_show_percpuinfo;
1018 ppc_md.show_cpuinfo = NULL; /* set in prep_setup_arch() */
1019 ppc_md.irq_canonicalize = prep_irq_canonicalize;
1020 ppc_md.init_IRQ = prep_init_IRQ;
1021 /* this gets changed later on if we have an OpenPIC -- Cort */
1022 ppc_md.get_irq = i8259_irq;
1024 ppc_md.restart = prep_restart;
1025 ppc_md.power_off = NULL; /* set in prep_setup_arch() */
1026 ppc_md.halt = prep_halt;
1028 ppc_md.nvram_read_val = prep_nvram_read_val;
1029 ppc_md.nvram_write_val = prep_nvram_write_val;
1031 ppc_md.time_init = todc_time_init;
1032 if (_prep_type == _PREP_IBM) {
1033 ppc_md.rtc_read_val = todc_mc146818_read_val;
1034 ppc_md.rtc_write_val = todc_mc146818_write_val;
1035 TODC_INIT(TODC_TYPE_MC146818, RTC_PORT(0), NULL, RTC_PORT(1),
1038 TODC_INIT(TODC_TYPE_MK48T59, PREP_NVRAM_AS0, PREP_NVRAM_AS1,
1039 PREP_NVRAM_DATA, 8);
1042 ppc_md.calibrate_decr = prep_calibrate_decr;
1043 ppc_md.set_rtc_time = todc_set_rtc_time;
1044 ppc_md.get_rtc_time = todc_get_rtc_time;
1046 ppc_md.setup_io_mappings = prep_map_io;
1048 #if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
1049 ppc_ide_md.default_irq = prep_ide_default_irq;
1050 ppc_ide_md.default_io_base = prep_ide_default_io_base;
1054 ppc_md.smp_ops = &prep_smp_ops;
1055 #endif /* CONFIG_SMP */