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-rw-r--r--arch/ppc/platforms/prep_setup.c1043
1 files changed, 0 insertions, 1043 deletions
diff --git a/arch/ppc/platforms/prep_setup.c b/arch/ppc/platforms/prep_setup.c
deleted file mode 100644
index 465b658c927..00000000000
--- a/arch/ppc/platforms/prep_setup.c
+++ /dev/null
@@ -1,1043 +0,0 @@
-/*
- * Copyright (C) 1995 Linus Torvalds
- * Adapted from 'alpha' version by Gary Thomas
- * Modified by Cort Dougan (cort@cs.nmt.edu)
- *
- * Support for PReP (Motorola MTX/MVME)
- * by Troy Benjegerdes (hozer@drgw.net)
- */
-
-/*
- * bootup setup stuff..
- */
-
-#include <linux/delay.h>
-#include <linux/module.h>
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/stddef.h>
-#include <linux/unistd.h>
-#include <linux/ptrace.h>
-#include <linux/slab.h>
-#include <linux/user.h>
-#include <linux/a.out.h>
-#include <linux/screen_info.h>
-#include <linux/major.h>
-#include <linux/interrupt.h>
-#include <linux/reboot.h>
-#include <linux/init.h>
-#include <linux/initrd.h>
-#include <linux/ioport.h>
-#include <linux/console.h>
-#include <linux/timex.h>
-#include <linux/pci.h>
-#include <linux/seq_file.h>
-#include <linux/root_dev.h>
-
-#include <asm/sections.h>
-#include <asm/mmu.h>
-#include <asm/processor.h>
-#include <asm/residual.h>
-#include <asm/io.h>
-#include <asm/pgtable.h>
-#include <asm/cache.h>
-#include <asm/dma.h>
-#include <asm/machdep.h>
-#include <asm/mc146818rtc.h>
-#include <asm/mk48t59.h>
-#include <asm/prep_nvram.h>
-#include <asm/raven.h>
-#include <asm/vga.h>
-#include <asm/time.h>
-#include <asm/mpc10x.h>
-#include <asm/i8259.h>
-#include <asm/open_pic.h>
-#include <asm/pci-bridge.h>
-#include <asm/todc.h>
-
-/* prep registers for L2 */
-#define CACHECRBA 0x80000823 /* Cache configuration register address */
-#define L2CACHE_MASK 0x03 /* Mask for 2 L2 Cache bits */
-#define L2CACHE_512KB 0x00 /* 512KB */
-#define L2CACHE_256KB 0x01 /* 256KB */
-#define L2CACHE_1MB 0x02 /* 1MB */
-#define L2CACHE_NONE 0x03 /* NONE */
-#define L2CACHE_PARITY 0x08 /* Mask for L2 Cache Parity Protected bit */
-
-TODC_ALLOC();
-
-extern unsigned char prep_nvram_read_val(int addr);
-extern void prep_nvram_write_val(int addr,
- unsigned char val);
-extern unsigned char rs_nvram_read_val(int addr);
-extern void rs_nvram_write_val(int addr,
- unsigned char val);
-extern void ibm_prep_init(void);
-
-extern void prep_find_bridges(void);
-
-int _prep_type;
-
-extern void prep_residual_setup_pci(char *irq_edge_mask_lo, char *irq_edge_mask_hi);
-extern void prep_sandalfoot_setup_pci(char *irq_edge_mask_lo, char *irq_edge_mask_hi);
-extern void prep_thinkpad_setup_pci(char *irq_edge_mask_lo, char *irq_edge_mask_hi);
-extern void prep_carolina_setup_pci(char *irq_edge_mask_lo, char *irq_edge_mask_hi);
-extern void prep_tiger1_setup_pci(char *irq_edge_mask_lo, char *irq_edge_mask_hi);
-
-
-#define cached_21 (((char *)(ppc_cached_irq_mask))[3])
-#define cached_A1 (((char *)(ppc_cached_irq_mask))[2])
-
-extern PTE *Hash, *Hash_end;
-extern unsigned long Hash_size, Hash_mask;
-extern int probingmem;
-extern unsigned long loops_per_jiffy;
-
-/* useful ISA ports */
-#define PREP_SYSCTL 0x81c
-/* present in the IBM reference design; possibly identical in Mot boxes: */
-#define PREP_IBM_SIMM_ID 0x803 /* SIMM size: 32 or 8 MiB */
-#define PREP_IBM_SIMM_PRESENCE 0x804
-#define PREP_IBM_EQUIPMENT 0x80c
-#define PREP_IBM_L2INFO 0x80d
-#define PREP_IBM_PM1 0x82a /* power management register 1 */
-#define PREP_IBM_PLANAR 0x852 /* planar ID - identifies the motherboard */
-#define PREP_IBM_DISP 0x8c0 /* 4-digit LED display */
-
-/* Equipment Present Register masks: */
-#define PREP_IBM_EQUIPMENT_RESERVED 0x80
-#define PREP_IBM_EQUIPMENT_SCSIFUSE 0x40
-#define PREP_IBM_EQUIPMENT_L2_COPYBACK 0x08
-#define PREP_IBM_EQUIPMENT_L2_256 0x04
-#define PREP_IBM_EQUIPMENT_CPU 0x02
-#define PREP_IBM_EQUIPMENT_L2 0x01
-
-/* planar ID values: */
-/* Sandalfoot/Sandalbow (6015/7020) */
-#define PREP_IBM_SANDALFOOT 0xfc
-/* Woodfield, Thinkpad 850/860 (6042/7249) */
-#define PREP_IBM_THINKPAD 0xff /* planar ID unimplemented */
-/* PowerSeries 830/850 (6050/6070) */
-#define PREP_IBM_CAROLINA_IDE_0 0xf0
-#define PREP_IBM_CAROLINA_IDE_1 0xf1
-#define PREP_IBM_CAROLINA_IDE_2 0xf2
-#define PREP_IBM_CAROLINA_IDE_3 0xf3
-/* 7248-43P */
-#define PREP_IBM_CAROLINA_SCSI_0 0xf4
-#define PREP_IBM_CAROLINA_SCSI_1 0xf5
-#define PREP_IBM_CAROLINA_SCSI_2 0xf6
-#define PREP_IBM_CAROLINA_SCSI_3 0xf7 /* missing from Carolina Tech Spec */
-/* Tiger1 (7043-140) */
-#define PREP_IBM_TIGER1_133 0xd1
-#define PREP_IBM_TIGER1_166 0xd2
-#define PREP_IBM_TIGER1_180 0xd3
-#define PREP_IBM_TIGER1_xxx 0xd4 /* unknown, but probably exists */
-#define PREP_IBM_TIGER1_333 0xd5 /* missing from Tiger Tech Spec */
-
-/* setup_ibm_pci:
- * set Motherboard_map_name, Motherboard_map, Motherboard_routes.
- * return 8259 edge/level masks.
- */
-void (*setup_ibm_pci)(char *irq_lo, char *irq_hi);
-
-extern char *Motherboard_map_name; /* for use in *_cpuinfo */
-
-/*
- * As found in the PReP reference implementation.
- * Used by Thinkpad, Sandalfoot (6015/7020), and all Motorola PReP.
- */
-static void __init
-prep_gen_enable_l2(void)
-{
- outb(inb(PREP_SYSCTL) | 0x3, PREP_SYSCTL);
-}
-
-/* Used by Carolina and Tiger1 */
-static void __init
-prep_carolina_enable_l2(void)
-{
- outb(inb(PREP_SYSCTL) | 0xc0, PREP_SYSCTL);
-}
-
-/* cpuinfo code common to all IBM PReP */
-static void
-prep_ibm_cpuinfo(struct seq_file *m)
-{
- unsigned int equip_reg = inb(PREP_IBM_EQUIPMENT);
-
- seq_printf(m, "machine\t\t: PReP %s\n", Motherboard_map_name);
-
- seq_printf(m, "upgrade cpu\t: ");
- if (equip_reg & PREP_IBM_EQUIPMENT_CPU) {
- seq_printf(m, "not ");
- }
- seq_printf(m, "present\n");
-
- /* print info about the SCSI fuse */
- seq_printf(m, "scsi fuse\t: ");
- if (equip_reg & PREP_IBM_EQUIPMENT_SCSIFUSE)
- seq_printf(m, "ok");
- else
- seq_printf(m, "bad");
- seq_printf(m, "\n");
-
- /* print info about SIMMs */
- if (have_residual_data) {
- int i;
- seq_printf(m, "simms\t\t: ");
- for (i = 0; (res->ActualNumMemories) && (i < MAX_MEMS); i++) {
- if (res->Memories[i].SIMMSize != 0)
- seq_printf(m, "%d:%ldMiB ", i,
- (res->Memories[i].SIMMSize > 1024) ?
- res->Memories[i].SIMMSize>>20 :
- res->Memories[i].SIMMSize);
- }
- seq_printf(m, "\n");
- }
-}
-
-static int
-prep_gen_cpuinfo(struct seq_file *m)
-{
- prep_ibm_cpuinfo(m);
- return 0;
-}
-
-static int
-prep_sandalfoot_cpuinfo(struct seq_file *m)
-{
- unsigned int equip_reg = inb(PREP_IBM_EQUIPMENT);
-
- prep_ibm_cpuinfo(m);
-
- /* report amount and type of L2 cache present */
- seq_printf(m, "L2 cache\t: ");
- if (equip_reg & PREP_IBM_EQUIPMENT_L2) {
- seq_printf(m, "not present");
- } else {
- if (equip_reg & PREP_IBM_EQUIPMENT_L2_256)
- seq_printf(m, "256KiB");
- else
- seq_printf(m, "unknown size");
-
- if (equip_reg & PREP_IBM_EQUIPMENT_L2_COPYBACK)
- seq_printf(m, ", copy-back");
- else
- seq_printf(m, ", write-through");
- }
- seq_printf(m, "\n");
-
- return 0;
-}
-
-static int
-prep_thinkpad_cpuinfo(struct seq_file *m)
-{
- unsigned int equip_reg = inb(PREP_IBM_EQUIPMENT);
- char *cpubus_speed, *pci_speed;
-
- prep_ibm_cpuinfo(m);
-
- /* report amount and type of L2 cache present */
- seq_printf(m, "l2 cache\t: ");
- if ((equip_reg & 0x1) == 0) {
- switch ((equip_reg & 0xc) >> 2) {
- case 0x0:
- seq_printf(m, "128KiB look-aside 2-way write-through\n");
- break;
- case 0x1:
- seq_printf(m, "512KiB look-aside direct-mapped write-back\n");
- break;
- case 0x2:
- seq_printf(m, "256KiB look-aside 2-way write-through\n");
- break;
- case 0x3:
- seq_printf(m, "256KiB look-aside direct-mapped write-back\n");
- break;
- }
- } else {
- seq_printf(m, "not present\n");
- }
-
- /* report bus speeds because we can */
- if ((equip_reg & 0x80) == 0) {
- switch ((equip_reg & 0x30) >> 4) {
- case 0x1:
- cpubus_speed = "50";
- pci_speed = "25";
- break;
- case 0x3:
- cpubus_speed = "66";
- pci_speed = "33";
- break;
- default:
- cpubus_speed = "unknown";
- pci_speed = "unknown";
- break;
- }
- } else {
- switch ((equip_reg & 0x30) >> 4) {
- case 0x1:
- cpubus_speed = "25";
- pci_speed = "25";
- break;
- case 0x2:
- cpubus_speed = "60";
- pci_speed = "30";
- break;
- case 0x3:
- cpubus_speed = "33";
- pci_speed = "33";
- break;
- default:
- cpubus_speed = "unknown";
- pci_speed = "unknown";
- break;
- }
- }
- seq_printf(m, "60x bus\t\t: %sMHz\n", cpubus_speed);
- seq_printf(m, "pci bus\t\t: %sMHz\n", pci_speed);
-
- return 0;
-}
-
-static int
-prep_carolina_cpuinfo(struct seq_file *m)
-{
- unsigned int equip_reg = inb(PREP_IBM_EQUIPMENT);
-
- prep_ibm_cpuinfo(m);
-
- /* report amount and type of L2 cache present */
- seq_printf(m, "l2 cache\t: ");
- if ((equip_reg & 0x1) == 0) {
- unsigned int l2_reg = inb(PREP_IBM_L2INFO);
-
- /* L2 size */
- if ((l2_reg & 0x60) == 0)
- seq_printf(m, "256KiB");
- else if ((l2_reg & 0x60) == 0x20)
- seq_printf(m, "512KiB");
- else
- seq_printf(m, "unknown size");
-
- /* L2 type */
- if ((l2_reg & 0x3) == 0)
- seq_printf(m, ", async");
- else if ((l2_reg & 0x3) == 1)
- seq_printf(m, ", sync");
- else
- seq_printf(m, ", unknown type");
-
- seq_printf(m, "\n");
- } else {
- seq_printf(m, "not present\n");
- }
-
- return 0;
-}
-
-static int
-prep_tiger1_cpuinfo(struct seq_file *m)
-{
- unsigned int l2_reg = inb(PREP_IBM_L2INFO);
-
- prep_ibm_cpuinfo(m);
-
- /* report amount and type of L2 cache present */
- seq_printf(m, "l2 cache\t: ");
- if ((l2_reg & 0xf) == 0xf) {
- seq_printf(m, "not present\n");
- } else {
- if (l2_reg & 0x8)
- seq_printf(m, "async, ");
- else
- seq_printf(m, "sync burst, ");
-
- if (l2_reg & 0x4)
- seq_printf(m, "parity, ");
- else
- seq_printf(m, "no parity, ");
-
- switch (l2_reg & 0x3) {
- case 0x0:
- seq_printf(m, "256KiB\n");
- break;
- case 0x1:
- seq_printf(m, "512KiB\n");
- break;
- case 0x2:
- seq_printf(m, "1MiB\n");
- break;
- default:
- seq_printf(m, "unknown size\n");
- break;
- }
- }
-
- return 0;
-}
-
-
-/* Used by all Motorola PReP */
-static int
-prep_mot_cpuinfo(struct seq_file *m)
-{
- unsigned int cachew = *((unsigned char *)CACHECRBA);
-
- seq_printf(m, "machine\t\t: PReP %s\n", Motherboard_map_name);
-
- /* report amount and type of L2 cache present */
- seq_printf(m, "l2 cache\t: ");
- switch (cachew & L2CACHE_MASK) {
- case L2CACHE_512KB:
- seq_printf(m, "512KiB");
- break;
- case L2CACHE_256KB:
- seq_printf(m, "256KiB");
- break;
- case L2CACHE_1MB:
- seq_printf(m, "1MiB");
- break;
- case L2CACHE_NONE:
- seq_printf(m, "none\n");
- goto no_l2;
- break;
- default:
- seq_printf(m, "%x\n", cachew);
- }
-
- seq_printf(m, ", parity %s",
- (cachew & L2CACHE_PARITY)? "enabled" : "disabled");
-
- seq_printf(m, " SRAM:");
-
- switch ( ((cachew & 0xf0) >> 4) & ~(0x3) ) {
- case 1: seq_printf(m, "synchronous, parity, flow-through\n");
- break;
- case 2: seq_printf(m, "asynchronous, no parity\n");
- break;
- case 3: seq_printf(m, "asynchronous, parity\n");
- break;
- default:seq_printf(m, "synchronous, pipelined, no parity\n");
- break;
- }
-
-no_l2:
- /* print info about SIMMs */
- if (have_residual_data) {
- int i;
- seq_printf(m, "simms\t\t: ");
- for (i = 0; (res->ActualNumMemories) && (i < MAX_MEMS); i++) {
- if (res->Memories[i].SIMMSize != 0)
- seq_printf(m, "%d:%ldM ", i,
- (res->Memories[i].SIMMSize > 1024) ?
- res->Memories[i].SIMMSize>>20 :
- res->Memories[i].SIMMSize);
- }
- seq_printf(m, "\n");
- }
-
- return 0;
-}
-
-static void
-prep_restart(char *cmd)
-{
-#define PREP_SP92 0x92 /* Special Port 92 */
- local_irq_disable(); /* no interrupts */
-
- /* set exception prefix high - to the prom */
- _nmask_and_or_msr(0, MSR_IP);
-
- /* make sure bit 0 (reset) is a 0 */
- outb( inb(PREP_SP92) & ~1L , PREP_SP92);
- /* signal a reset to system control port A - soft reset */
- outb( inb(PREP_SP92) | 1 , PREP_SP92);
-
- while ( 1 ) ;
- /* not reached */
-#undef PREP_SP92
-}
-
-static void
-prep_halt(void)
-{
- local_irq_disable(); /* no interrupts */
-
- /* set exception prefix high - to the prom */
- _nmask_and_or_msr(0, MSR_IP);
-
- while ( 1 ) ;
- /* not reached */
-}
-
-/* Carrera is the power manager in the Thinkpads. Unfortunately not much is
- * known about it, so we can't power down.
- */
-static void
-prep_carrera_poweroff(void)
-{
- prep_halt();
-}
-
-/*
- * On most IBM PReP's, power management is handled by a Signetics 87c750
- * behind the Utah component on the ISA bus. To access the 750 you must write
- * a series of nibbles to port 0x82a (decoded by the Utah). This is described
- * somewhat in the IBM Carolina Technical Specification.
- * -Hollis
- */
-static void
-utah_sig87c750_setbit(unsigned int bytenum, unsigned int bitnum, int value)
-{
- /*
- * byte1: 0 0 0 1 0 d a5 a4
- * byte2: 0 0 0 1 a3 a2 a1 a0
- *
- * d = the bit's value, enabled or disabled
- * (a5 a4 a3) = the byte number, minus 20
- * (a2 a1 a0) = the bit number
- *
- * example: set the 5th bit of byte 21 (21.5)
- * a5 a4 a3 = 001 (byte 1)
- * a2 a1 a0 = 101 (bit 5)
- *
- * byte1 = 0001 0100 (0x14)
- * byte2 = 0001 1101 (0x1d)
- */
- unsigned char byte1=0x10, byte2=0x10;
-
- /* the 750's '20.0' is accessed as '0.0' through Utah (which adds 20) */
- bytenum -= 20;
-
- byte1 |= (!!value) << 2; /* set d */
- byte1 |= (bytenum >> 1) & 0x3; /* set a5, a4 */
-
- byte2 |= (bytenum & 0x1) << 3; /* set a3 */
- byte2 |= bitnum & 0x7; /* set a2, a1, a0 */
-
- outb(byte1, PREP_IBM_PM1); /* first nibble */
- mb();
- udelay(100); /* important: let controller recover */
-
- outb(byte2, PREP_IBM_PM1); /* second nibble */
- mb();
- udelay(100); /* important: let controller recover */
-}
-
-static void
-prep_sig750_poweroff(void)
-{
- /* tweak the power manager found in most IBM PRePs (except Thinkpads) */
-
- local_irq_disable();
- /* set exception prefix high - to the prom */
- _nmask_and_or_msr(0, MSR_IP);
-
- utah_sig87c750_setbit(21, 5, 1); /* set bit 21.5, "PMEXEC_OFF" */
-
- while (1) ;
- /* not reached */
-}
-
-static int
-prep_show_percpuinfo(struct seq_file *m, int i)
-{
- /* PREP's without residual data will give incorrect values here */
- seq_printf(m, "clock\t\t: ");
- if (have_residual_data)
- seq_printf(m, "%ldMHz\n",
- (res->VitalProductData.ProcessorHz > 1024) ?
- res->VitalProductData.ProcessorHz / 1000000 :
- res->VitalProductData.ProcessorHz);
- else
- seq_printf(m, "???\n");
-
- return 0;
-}
-
-/*
- * Fill out screen_info according to the residual data. This allows us to use
- * at least vesafb.
- */
-static void __init
-prep_init_vesa(void)
-{
-#if (defined(CONFIG_FB_VGA16) || defined(CONFIG_FB_VGA16_MODULE) || \
- defined(CONFIG_FB_VESA))
- PPC_DEVICE *vgadev = NULL;
-
- if (have_residual_data)
- vgadev = residual_find_device(~0, NULL, DisplayController,
- SVGAController, -1, 0);
-
- if (vgadev != NULL) {
- PnP_TAG_PACKET *pkt;
-
- pkt = PnP_find_large_vendor_packet(
- (unsigned char *)&res->DevicePnPHeap[vgadev->AllocatedOffset],
- 0x04, 0); /* 0x04 = Display Tag */
- if (pkt != NULL) {
- unsigned char *ptr = (unsigned char *)pkt;
-
- if (ptr[4]) {
- /* graphics mode */
- screen_info.orig_video_isVGA = VIDEO_TYPE_VLFB;
-
- screen_info.lfb_depth = ptr[4] * 8;
-
- screen_info.lfb_width = swab16(*(short *)(ptr+6));
- screen_info.lfb_height = swab16(*(short *)(ptr+8));
- screen_info.lfb_linelength = swab16(*(short *)(ptr+10));
-
- screen_info.lfb_base = swab32(*(long *)(ptr+12));
- screen_info.lfb_size = swab32(*(long *)(ptr+20)) / 65536;
- }
- }
- }
-#endif
-}
-
-/*
- * Set DBAT 2 to access 0x80000000 so early progress messages will work
- */
-static __inline__ void
-prep_set_bat(void)
-{
- /* wait for all outstanding memory access to complete */
- mb();
-
- /* setup DBATs */
- mtspr(SPRN_DBAT2U, 0x80001ffe);
- mtspr(SPRN_DBAT2L, 0x8000002a);
-
- /* wait for updates */
- mb();
-}
-
-/*
- * IBM 3-digit status LED
- */
-static unsigned int ibm_statusled_base;
-
-static void
-ibm_statusled_progress(char *s, unsigned short hex);
-
-static int
-ibm_statusled_panic(struct notifier_block *dummy1, unsigned long dummy2,
- void * dummy3)
-{
- ibm_statusled_progress(NULL, 0x505); /* SOS */
- return NOTIFY_DONE;
-}
-
-static struct notifier_block ibm_statusled_block = {
- ibm_statusled_panic,
- NULL,
- INT_MAX /* try to do it first */
-};
-
-static void
-ibm_statusled_progress(char *s, unsigned short hex)
-{
- static int notifier_installed;
- /*
- * Progress uses 4 digits and we have only 3. So, we map 0xffff to
- * 0xfff for display switch off. Out of range values are mapped to
- * 0xeff, as I'm told 0xf00 and above are reserved for hardware codes.
- * Install the panic notifier when the display is first switched off.
- */
- if (hex == 0xffff) {
- hex = 0xfff;
- if (!notifier_installed) {
- ++notifier_installed;
- atomic_notifier_chain_register(&panic_notifier_list,
- &ibm_statusled_block);
- }
- }
- else
- if (hex > 0xfff)
- hex = 0xeff;
-
- mb();
- outw(hex, ibm_statusled_base);
-}
-
-static void __init
-ibm_statusled_init(void)
-{
- /*
- * The IBM 3-digit LED display is specified in the residual data
- * as an operator panel device, type "System Status LED". Find
- * that device and determine its address. We validate all the
- * other parameters on the off-chance another, similar device
- * exists.
- */
- if (have_residual_data) {
- PPC_DEVICE *led;
- PnP_TAG_PACKET *pkt;
-
- led = residual_find_device(~0, NULL, SystemPeripheral,
- OperatorPanel, SystemStatusLED, 0);
- if (!led)
- return;
-
- pkt = PnP_find_packet((unsigned char *)
- &res->DevicePnPHeap[led->AllocatedOffset], S8_Packet, 0);
- if (!pkt)
- return;
-
- if (pkt->S8_Pack.IOInfo != ISAAddr16bit)
- return;
- if (*(unsigned short *)pkt->S8_Pack.RangeMin !=
- *(unsigned short *)pkt->S8_Pack.RangeMax)
- return;
- if (pkt->S8_Pack.IOAlign != 2)
- return;
- if (pkt->S8_Pack.IONum != 2)
- return;
-
- ibm_statusled_base = ld_le16((unsigned short *)
- (pkt->S8_Pack.RangeMin));
- ppc_md.progress = ibm_statusled_progress;
- }
-}
-
-static void __init
-prep_setup_arch(void)
-{
- unsigned char reg;
- int is_ide=0;
-
- /* init to some ~sane value until calibrate_delay() runs */
- loops_per_jiffy = 50000000;
-
- /* Lookup PCI host bridges */
- prep_find_bridges();
-
- /* Set up floppy in PS/2 mode */
- outb(0x09, SIO_CONFIG_RA);
- reg = inb(SIO_CONFIG_RD);
- reg = (reg & 0x3F) | 0x40;
- outb(reg, SIO_CONFIG_RD);
- outb(reg, SIO_CONFIG_RD); /* Have to write twice to change! */
-
- switch ( _prep_type )
- {
- case _PREP_IBM:
- reg = inb(PREP_IBM_PLANAR);
- printk(KERN_INFO "IBM planar ID: %02x", reg);
- switch (reg) {
- case PREP_IBM_SANDALFOOT:
- prep_gen_enable_l2();
- setup_ibm_pci = prep_sandalfoot_setup_pci;
- ppc_md.power_off = prep_sig750_poweroff;
- ppc_md.show_cpuinfo = prep_sandalfoot_cpuinfo;
- break;
- case PREP_IBM_THINKPAD:
- prep_gen_enable_l2();
- setup_ibm_pci = prep_thinkpad_setup_pci;
- ppc_md.power_off = prep_carrera_poweroff;
- ppc_md.show_cpuinfo = prep_thinkpad_cpuinfo;
- break;
- default:
- if (have_residual_data) {
- prep_gen_enable_l2();
- setup_ibm_pci = prep_residual_setup_pci;
- ppc_md.power_off = prep_halt;
- ppc_md.show_cpuinfo = prep_gen_cpuinfo;
- break;
- }
- else
- printk(" - unknown! Assuming Carolina");
- /* fall through */
- case PREP_IBM_CAROLINA_IDE_0:
- case PREP_IBM_CAROLINA_IDE_1:
- case PREP_IBM_CAROLINA_IDE_2:
- case PREP_IBM_CAROLINA_IDE_3:
- is_ide = 1;
- case PREP_IBM_CAROLINA_SCSI_0:
- case PREP_IBM_CAROLINA_SCSI_1:
- case PREP_IBM_CAROLINA_SCSI_2:
- case PREP_IBM_CAROLINA_SCSI_3:
- prep_carolina_enable_l2();
- setup_ibm_pci = prep_carolina_setup_pci;
- ppc_md.power_off = prep_sig750_poweroff;
- ppc_md.show_cpuinfo = prep_carolina_cpuinfo;
- break;
- case PREP_IBM_TIGER1_133:
- case PREP_IBM_TIGER1_166:
- case PREP_IBM_TIGER1_180:
- case PREP_IBM_TIGER1_xxx:
- case PREP_IBM_TIGER1_333:
- prep_carolina_enable_l2();
- setup_ibm_pci = prep_tiger1_setup_pci;
- ppc_md.power_off = prep_sig750_poweroff;
- ppc_md.show_cpuinfo = prep_tiger1_cpuinfo;
- break;
- }
- printk("\n");
-
- /* default root device */
- if (is_ide)
- ROOT_DEV = MKDEV(IDE0_MAJOR, 3);
- else
- ROOT_DEV = MKDEV(SCSI_DISK0_MAJOR, 3);
-
- break;
- case _PREP_Motorola:
- prep_gen_enable_l2();
- ppc_md.power_off = prep_halt;
- ppc_md.show_cpuinfo = prep_mot_cpuinfo;
-
-#ifdef CONFIG_BLK_DEV_INITRD
- if (initrd_start)
- ROOT_DEV = Root_RAM0;
- else
-#endif
-#ifdef CONFIG_ROOT_NFS
- ROOT_DEV = Root_NFS;
-#else
- ROOT_DEV = Root_SDA2;
-#endif
- break;
- }
-
- /* Read in NVRAM data */
- init_prep_nvram();
-
- /* if no bootargs, look in NVRAM */
- if ( cmd_line[0] == '\0' ) {
- char *bootargs;
- bootargs = prep_nvram_get_var("bootargs");
- if (bootargs != NULL) {
- strcpy(cmd_line, bootargs);
- /* again.. */
- strcpy(boot_command_line, cmd_line);
- }
- }
-
- prep_init_vesa();
-
- switch (_prep_type) {
- case _PREP_Motorola:
- raven_init();
- break;
- case _PREP_IBM:
- ibm_prep_init();
- break;
- }
-
-#ifdef CONFIG_VGA_CONSOLE
- /* vgacon.c needs to know where we mapped IO memory in io_block_mapping() */
- vgacon_remap_base = 0xf0000000;
- conswitchp = &vga_con;
-#endif
-}
-
-/*
- * First, see if we can get this information from the residual data.
- * This is important on some IBM PReP systems. If we cannot, we let the
- * TODC code handle doing this.
- */
-static void __init
-prep_calibrate_decr(void)
-{
- if (have_residual_data) {
- unsigned long freq, divisor = 4;
-
- if ( res->VitalProductData.ProcessorBusHz ) {
- freq = res->VitalProductData.ProcessorBusHz;
- printk("time_init: decrementer frequency = %lu.%.6lu MHz\n",
- (freq/divisor)/1000000,
- (freq/divisor)%1000000);
- tb_to_us = mulhwu_scale_factor(freq/divisor, 1000000);
- tb_ticks_per_jiffy = freq / HZ / divisor;
- }
- }
- else
- todc_calibrate_decr();
-}
-
-static void __init
-prep_init_IRQ(void)
-{
- unsigned int pci_viddid, pci_did;
-
- if (OpenPIC_Addr != NULL) {
- openpic_init(NUM_8259_INTERRUPTS);
- /* We have a cascade on OpenPIC IRQ 0, Linux IRQ 16 */
- openpic_hookup_cascade(NUM_8259_INTERRUPTS, "82c59 cascade",
- i8259_irq);
- }
-
- if (have_residual_data) {
- i8259_init(residual_isapic_addr(), 0);
- return;
- }
-
- /* If we have a Raven PCI bridge or a Hawk PCI bridge / Memory
- * controller, we poll (as they have a different int-ack address). */
- early_read_config_dword(NULL, 0, 0, PCI_VENDOR_ID, &pci_viddid);
- pci_did = (pci_viddid & 0xffff0000) >> 16;
- if (((pci_viddid & 0xffff) == PCI_VENDOR_ID_MOTOROLA)
- && ((pci_did == PCI_DEVICE_ID_MOTOROLA_RAVEN)
- || (pci_did == PCI_DEVICE_ID_MOTOROLA_HAWK)))
- i8259_init(0, 0);
- else
- /* PCI interrupt ack address given in section 6.1.8 of the
- * PReP specification. */
- i8259_init(MPC10X_MAPA_PCI_INTACK_ADDR, 0);
-}
-
-#ifdef CONFIG_SMP
-/* PReP (MTX) support */
-static int __init
-smp_prep_probe(void)
-{
- extern int mot_multi;
-
- if (mot_multi) {
- openpic_request_IPIs();
- smp_hw_index[1] = 1;
- return 2;
- }
-
- return 1;
-}
-
-static void __init
-smp_prep_kick_cpu(int nr)
-{
- *(unsigned long *)KERNELBASE = nr;
- asm volatile("dcbf 0,%0"::"r"(KERNELBASE):"memory");
- printk("CPU1 released, waiting\n");
-}
-
-static void __init
-smp_prep_setup_cpu(int cpu_nr)
-{
- if (OpenPIC_Addr)
- do_openpic_setup_cpu();
-}
-
-static struct smp_ops_t prep_smp_ops = {
- smp_openpic_message_pass,
- smp_prep_probe,
- smp_prep_kick_cpu,
- smp_prep_setup_cpu,
- .give_timebase = smp_generic_give_timebase,
- .take_timebase = smp_generic_take_timebase,
-};
-#endif /* CONFIG_SMP */
-
-/*
- * Setup the bat mappings we're going to load that cover
- * the io areas. RAM was mapped by mapin_ram().
- * -- Cort
- */
-static void __init
-prep_map_io(void)
-{
- io_block_mapping(0x80000000, PREP_ISA_IO_BASE, 0x10000000, _PAGE_IO);
- io_block_mapping(0xf0000000, PREP_ISA_MEM_BASE, 0x08000000, _PAGE_IO);
-}
-
-static int __init
-prep_request_io(void)
-{
-#ifdef CONFIG_NVRAM
- request_region(PREP_NVRAM_AS0, 0x8, "nvram");
-#endif
- request_region(0x00,0x20,"dma1");
- request_region(0x40,0x20,"timer");
- request_region(0x80,0x10,"dma page reg");
- request_region(0xc0,0x20,"dma2");
-
- return 0;
-}
-
-device_initcall(prep_request_io);
-
-void __init
-prep_init(unsigned long r3, unsigned long r4, unsigned long r5,
- unsigned long r6, unsigned long r7)
-{
-#ifdef CONFIG_PREP_RESIDUAL
- /* make a copy of residual data */
- if ( r3 ) {
- memcpy((void *)res,(void *)(r3+KERNELBASE),
- sizeof(RESIDUAL));
- }
-#endif
-
- isa_io_base = PREP_ISA_IO_BASE;
- isa_mem_base = PREP_ISA_MEM_BASE;
- pci_dram_offset = PREP_PCI_DRAM_OFFSET;
- ISA_DMA_THRESHOLD = 0x00ffffff;
- DMA_MODE_READ = 0x44;
- DMA_MODE_WRITE = 0x48;
- ppc_do_canonicalize_irqs = 1;
-
- /* figure out what kind of prep workstation we are */
- if (have_residual_data) {
- if ( !strncmp(res->VitalProductData.PrintableModel,"IBM",3) )
- _prep_type = _PREP_IBM;
- else
- _prep_type = _PREP_Motorola;
- }
- else {
- /* assume motorola if no residual (netboot?) */
- _prep_type = _PREP_Motorola;
- }
-
-#ifdef CONFIG_PREP_RESIDUAL
- /* Switch off all residual data processing if the user requests it */
- if (strstr(cmd_line, "noresidual") != NULL)
- res = NULL;
-#endif
-
- /* Initialise progress early to get maximum benefit */
- prep_set_bat();
- ibm_statusled_init();
-
- ppc_md.setup_arch = prep_setup_arch;
- ppc_md.show_percpuinfo = prep_show_percpuinfo;
- ppc_md.show_cpuinfo = NULL; /* set in prep_setup_arch() */
- ppc_md.init_IRQ = prep_init_IRQ;
- /* this gets changed later on if we have an OpenPIC -- Cort */
- ppc_md.get_irq = i8259_irq;
-
- ppc_md.phys_mem_access_prot = pci_phys_mem_access_prot;
-
- ppc_md.restart = prep_restart;
- ppc_md.power_off = NULL; /* set in prep_setup_arch() */
- ppc_md.halt = prep_halt;
-
- ppc_md.nvram_read_val = prep_nvram_read_val;
- ppc_md.nvram_write_val = prep_nvram_write_val;
-
- ppc_md.time_init = todc_time_init;
- if (_prep_type == _PREP_IBM) {
- ppc_md.rtc_read_val = todc_mc146818_read_val;
- ppc_md.rtc_write_val = todc_mc146818_write_val;
- TODC_INIT(TODC_TYPE_MC146818, RTC_PORT(0), NULL, RTC_PORT(1),
- 8);
- } else {
- TODC_INIT(TODC_TYPE_MK48T59, PREP_NVRAM_AS0, PREP_NVRAM_AS1,
- PREP_NVRAM_DATA, 8);
- }
-
- ppc_md.calibrate_decr = prep_calibrate_decr;
- ppc_md.set_rtc_time = todc_set_rtc_time;
- ppc_md.get_rtc_time = todc_get_rtc_time;
-
- ppc_md.setup_io_mappings = prep_map_io;
-
-#ifdef CONFIG_SMP
- smp_ops = &prep_smp_ops;
-#endif /* CONFIG_SMP */
-}