diff options
Diffstat (limited to 'arch/ppc/platforms/prep_setup.c')
| -rw-r--r-- | arch/ppc/platforms/prep_setup.c | 1043 |
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 465b658..0000000 --- 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 */ -} |
