/* * linux/arch/ppc/kernel/setup.c * * PowerPC version * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org) * * Adapted for Power Macintosh by Paul Mackerras * Copyright (C) 1996 Paul Mackerras (paulus@cs.anu.edu.au) * * Derived from "arch/alpha/kernel/setup.c" * Copyright (C) 1995 Linus Torvalds * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. * */ /* * bootup setup stuff.. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "time.h" #include "local_irq.h" #include "pmac_pic.h" #undef SHOW_GATWICK_IRQS unsigned long pmac_get_rtc_time(void); int pmac_set_rtc_time(unsigned long nowtime); void pmac_read_rtc_time(void); void pmac_calibrate_decr(void); void pmac_setup_pci_ptrs(void); extern int mackbd_setkeycode(unsigned int scancode, unsigned int keycode); extern int mackbd_getkeycode(unsigned int scancode); extern int mackbd_translate(unsigned char scancode, unsigned char *keycode, char raw_mode); extern char mackbd_unexpected_up(unsigned char keycode); extern void mackbd_leds(unsigned char leds); extern void mackbd_init_hw(void); #ifdef CONFIG_MAGIC_SYSRQ unsigned char mackbd_sysrq_xlate[128]; #endif /* CONFIG_MAGIC_SYSRQ */ extern int pckbd_setkeycode(unsigned int scancode, unsigned int keycode); extern int pckbd_getkeycode(unsigned int scancode); extern int pckbd_translate(unsigned char scancode, unsigned char *keycode, char raw_mode); extern char pckbd_unexpected_up(unsigned char keycode); extern void pckbd_leds(unsigned char leds); extern void pckbd_init_hw(void); unsigned char drive_info; int ppc_override_l2cr = 0; int ppc_override_l2cr_value; extern char saved_command_line[]; #define DEFAULT_ROOT_DEVICE 0x0801 /* sda1 - slightly silly choice */ extern void zs_kgdb_hook(int tty_num); static void ohare_init(void); __pmac int pmac_get_cpuinfo(char *buffer) { int len; struct device_node *np; char *pp; int plen; /* find motherboard type */ len = sprintf(buffer, "machine\t\t: "); np = find_devices("device-tree"); if (np != NULL) { pp = (char *) get_property(np, "model", NULL); if (pp != NULL) len += sprintf(buffer+len, "%s\n", pp); else len += sprintf(buffer+len, "PowerMac\n"); pp = (char *) get_property(np, "compatible", &plen); if (pp != NULL) { len += sprintf(buffer+len, "motherboard\t:"); while (plen > 0) { int l = strlen(pp) + 1; len += sprintf(buffer+len, " %s", pp); plen -= l; pp += l; } buffer[len++] = '\n'; } } else len += sprintf(buffer+len, "PowerMac\n"); /* find l2 cache info */ np = find_devices("l2-cache"); if (np == 0) np = find_type_devices("cache"); if (np != 0) { unsigned int *ic = (unsigned int *) get_property(np, "i-cache-size", NULL); unsigned int *dc = (unsigned int *) get_property(np, "d-cache-size", NULL); len += sprintf(buffer+len, "L2 cache\t:"); if (get_property(np, "cache-unified", NULL) != 0 && dc) { len += sprintf(buffer+len, " %dK unified", *dc / 1024); } else { if (ic) len += sprintf(buffer+len, " %dK instruction", *ic / 1024); if (dc) len += sprintf(buffer+len, "%s %dK data", (ic? " +": ""), *dc / 1024); } pp = get_property(np, "ram-type", NULL); if (pp) len += sprintf(buffer+len, " %s", pp); buffer[len++] = '\n'; } /* find ram info */ np = find_devices("memory"); if (np != 0) { struct reg_property *reg = (struct reg_property *) get_property(np, "reg", NULL); if (reg != 0) { len += sprintf(buffer+len, "memory\t\t: %dMB\n", reg->size >> 20); } } /* Checks "l2cr-value" property in the registry */ np = find_devices("cpus"); if (np != 0) { unsigned int *l2cr = (unsigned int *) get_property(np, "l2cr-value", NULL); if (l2cr != 0) { len += sprintf(buffer+len, "l2cr override\t: 0x%x\n", *l2cr); } } return len; } #ifdef CONFIG_SCSI /* Find the device number for the disk (if any) at target tgt on host adaptor host. XXX this really really should be in drivers/scsi/sd.c. */ #include #include "../../../drivers/scsi/scsi.h" #include "../../../drivers/scsi/sd.h" #include "../../../drivers/scsi/hosts.h" #define SD_MAJOR(i) (!(i) ? SCSI_DISK0_MAJOR : SCSI_DISK1_MAJOR-1+(i)) #define SD_MAJOR_NUMBER(i) SD_MAJOR((i) >> 8) #define SD_MINOR_NUMBER(i) ((i) & 255) #define MKDEV_SD_PARTITION(i) MKDEV(SD_MAJOR_NUMBER(i), SD_MINOR_NUMBER(i)) #define MKDEV_SD(index) MKDEV_SD_PARTITION((index) << 4) __init kdev_t sd_find_target(void *host, int tgt) { Scsi_Disk *dp; int i; for (dp = rscsi_disks, i = 0; i < sd_template.dev_max; ++i, ++dp) if (dp->device != NULL && dp->device->host == host && dp->device->id == tgt) return MKDEV_SD(i); return 0; } #endif /* * Dummy mksound function that does nothing. * The real one is in the dmasound driver. */ __pmac static void pmac_mksound(unsigned int hz, unsigned int ticks) { } static volatile u32 *sysctrl_regs; __initfunc(void pmac_setup_arch(unsigned long *memory_start_p, unsigned long *memory_end_p)) { struct device_node *cpu; int *fp; /* Set loops_per_sec to a half-way reasonable value, for use until calibrate_delay gets called. */ cpu = find_type_devices("cpu"); if (cpu != 0) { fp = (int *) get_property(cpu, "clock-frequency", NULL); if (fp != 0) { switch (_get_PVR() >> 16) { case 4: /* 604 */ case 9: /* 604e */ case 10: /* mach V (604ev5) */ case 20: /* 620 */ loops_per_sec = *fp; break; default: /* 601, 603, etc. */ loops_per_sec = *fp / 2; } } else loops_per_sec = 50000000; } /* this area has the CPU identification register and some registers used by smp boards */ sysctrl_regs = (volatile u32 *) ioremap(0xf8000000, 0x1000); __ioremap(0xffc00000, 0x400000, pgprot_val(PAGE_READONLY)); ohare_init(); *memory_start_p = pmac_find_bridges(*memory_start_p, *memory_end_p); /* Checks "l2cr-value" property in the registry */ if ( (_get_PVR() >> 16) == 8) { struct device_node *np = find_devices("cpus"); if (np != 0) { unsigned int *l2cr = (unsigned int *) get_property(np, "l2cr-value", NULL); if (l2cr != 0) { ppc_override_l2cr = 1; ppc_override_l2cr_value = *l2cr; _set_L2CR(0); _set_L2CR(ppc_override_l2cr_value); } } } if (ppc_override_l2cr) printk(KERN_INFO "L2CR overriden (0x%x), backside cache is %s\n", ppc_override_l2cr_value, (ppc_override_l2cr_value & 0x80000000) ? "enabled" : "disabled"); feature_init(); #ifdef CONFIG_KGDB zs_kgdb_hook(0); #endif find_via_cuda(); find_via_pmu(); #ifdef CONFIG_DUMMY_CONSOLE conswitchp = &dummy_con; #endif kd_mksound = pmac_mksound; #ifdef CONFIG_BLK_DEV_INITRD if (initrd_start) ROOT_DEV = MKDEV(RAMDISK_MAJOR, 0); else #endif ROOT_DEV = to_kdev_t(DEFAULT_ROOT_DEVICE); } __initfunc(static void ohare_init(void)) { /* * Turn on the L2 cache. * We assume that we have a PSX memory controller iff * we have an ohare I/O controller. */ if (find_devices("ohare") != NULL) { if (((sysctrl_regs[2] >> 24) & 0xf) >= 3) { if (sysctrl_regs[4] & 0x10) sysctrl_regs[4] |= 0x04000020; else sysctrl_regs[4] |= 0x04000000; printk(KERN_INFO "Level 2 cache enabled\n"); } } } extern char *bootpath; extern char *bootdevice; void *boot_host; int boot_target; int boot_part; kdev_t boot_dev; __initfunc(void pmac_init2(void)) { adb_init(); pmac_nvram_init(); media_bay_init(); } #ifdef CONFIG_SCSI __initfunc(void note_scsi_host(struct device_node *node, void *host)) { int l; char *p; l = strlen(node->full_name); if (bootpath != NULL && bootdevice != NULL && strncmp(node->full_name, bootdevice, l) == 0 && (bootdevice[l] == '/' || bootdevice[l] == 0)) { boot_host = host; /* * There's a bug in OF 1.0.5. (Why am I not surprised.) * If you pass a path like scsi/sd@1:0 to canon, it returns * something like /bandit@F2000000/gc@10/53c94@10000/sd@0,0 * That is, the scsi target number doesn't get preserved. * So we pick the target number out of bootpath and use that. */ p = strstr(bootpath, "/sd@"); if (p != NULL) { p += 4; boot_target = simple_strtoul(p, NULL, 10); p = strchr(p, ':'); if (p != NULL) boot_part = simple_strtoul(p + 1, NULL, 10); } } } #endif #ifdef CONFIG_BLK_DEV_IDE_PMAC extern int pmac_ide_count; extern struct device_node *pmac_ide_node[]; static int ide_majors[] = { 3, 22, 33, 34, 56, 57 }; __initfunc(kdev_t find_ide_boot(void)) { char *p; int i, n; if (bootdevice == NULL) return 0; p = strrchr(bootdevice, '/'); if (p == NULL) return 0; n = p - bootdevice; /* * Look through the list of IDE interfaces for this one. */ for (i = 0; i < pmac_ide_count; ++i) { char *name = pmac_ide_node[i]->full_name; if (memcmp(name, bootdevice, n) == 0 && name[n] == 0) { /* XXX should cope with the 2nd drive as well... */ return MKDEV(ide_majors[i], 0); } } return 0; } #endif /* CONFIG_BLK_DEV_IDE_PMAC */ __initfunc(void find_boot_device(void)) { #ifdef CONFIG_SCSI if (boot_host != NULL) { boot_dev = sd_find_target(boot_host, boot_target); if (boot_dev != 0) return; } #endif #ifdef CONFIG_BLK_DEV_IDE_PMAC boot_dev = find_ide_boot(); #endif } /* can't be initfunc - can be called whenever a disk is first accessed */ __pmac void note_bootable_part(kdev_t dev, int part) { static int found_boot = 0; char *p; /* Do nothing if the root has been set already. */ if (ROOT_DEV != to_kdev_t(DEFAULT_ROOT_DEVICE)) return; p = strstr(saved_command_line, "root="); if (p != NULL && (p == saved_command_line || p[-1] == ' ')) return; if (!found_boot) { find_boot_device(); found_boot = 1; } if (dev == boot_dev) { ROOT_DEV = MKDEV(MAJOR(dev), MINOR(dev) + part); boot_dev = NODEV; printk(" (root)"); } } void pmac_restart(char *cmd) { struct adb_request req; switch (adb_hardware) { case ADB_VIACUDA: cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_RESET_SYSTEM); for (;;) cuda_poll(); break; case ADB_VIAPMU: pmu_restart(); break; default: } } void pmac_power_off(void) { struct adb_request req; switch (adb_hardware) { case ADB_VIACUDA: cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_POWERDOWN); for (;;) cuda_poll(); break; case ADB_VIAPMU: pmu_shutdown(); break; default: } } void pmac_halt(void) { pmac_power_off(); } #if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE) /* * IDE stuff. */ void pmac_ide_insw(ide_ioreg_t port, void *buf, int ns) { ide_insw(port, buf, ns); } void pmac_ide_outsw(ide_ioreg_t port, void *buf, int ns) { ide_outsw(port, buf, ns); } int pmac_ide_default_irq(ide_ioreg_t base) { return 0; } ide_ioreg_t pmac_ide_default_io_base(int index) { #if defined(CONFIG_BLK_DEV_IDE_PMAC) return pmac_ide_regbase[index]; #else return 0; #endif } int pmac_ide_check_region(ide_ioreg_t from, unsigned int extent) { return 0; } void pmac_ide_request_region(ide_ioreg_t from, unsigned int extent, const char *name) { } void pmac_ide_release_region(ide_ioreg_t from, unsigned int extent) { } /* Convert the shorts/longs in hd_driveid from little to big endian; * chars are endian independant, of course, but strings need to be flipped. * (Despite what it says in drivers/block/ide.h, they come up as little * endian...) * * Changes to linux/hdreg.h may require changes here. */ void pmac_ide_fix_driveid(struct hd_driveid *id) { ppc_generic_ide_fix_driveid(id); } /* This is declared in drivers/block/ide-pmac.c */ void pmac_ide_init_hwif_ports (ide_ioreg_t *p, ide_ioreg_t base, int *irq); #endif __initfunc(void pmac_init(unsigned long r3, unsigned long r4, unsigned long r5, unsigned long r6, unsigned long r7)) { pmac_setup_pci_ptrs(); /* isa_io_base gets set in pmac_find_bridges */ isa_mem_base = PMAC_ISA_MEM_BASE; pci_dram_offset = PMAC_PCI_DRAM_OFFSET; ISA_DMA_THRESHOLD = ~0L; DMA_MODE_READ = 1; DMA_MODE_WRITE = 2; ppc_md.setup_arch = pmac_setup_arch; ppc_md.setup_residual = NULL; ppc_md.get_cpuinfo = pmac_get_cpuinfo; ppc_md.irq_cannonicalize = NULL; ppc_md.init_IRQ = pmac_pic_init; ppc_md.do_IRQ = pmac_do_IRQ; ppc_md.init = pmac_init2; ppc_md.restart = pmac_restart; ppc_md.power_off = pmac_power_off; ppc_md.halt = pmac_halt; ppc_md.time_init = NULL; ppc_md.set_rtc_time = pmac_set_rtc_time; ppc_md.get_rtc_time = pmac_get_rtc_time; ppc_md.calibrate_decr = pmac_calibrate_decr; #if defined(CONFIG_VT) && defined(CONFIG_MAC_KEYBOARD) ppc_md.kbd_setkeycode = mackbd_setkeycode; ppc_md.kbd_getkeycode = mackbd_getkeycode; ppc_md.kbd_translate = mackbd_translate; ppc_md.kbd_unexpected_up = mackbd_unexpected_up; ppc_md.kbd_leds = mackbd_leds; ppc_md.kbd_init_hw = mackbd_init_hw; #ifdef CONFIG_MAGIC_SYSRQ ppc_md.kbd_sysrq_xlate = mackbd_sysrq_xlate; #endif #endif #if defined(CONFIG_BLK_DEV_IDE_PMAC) ppc_ide_md.insw = pmac_ide_insw; ppc_ide_md.outsw = pmac_ide_outsw; ppc_ide_md.default_irq = pmac_ide_default_irq; ppc_ide_md.default_io_base = pmac_ide_default_io_base; ppc_ide_md.check_region = pmac_ide_check_region; ppc_ide_md.request_region = pmac_ide_request_region; ppc_ide_md.release_region = pmac_ide_release_region; ppc_ide_md.fix_driveid = pmac_ide_fix_driveid; ppc_ide_md.ide_init_hwif = pmac_ide_init_hwif_ports; ppc_ide_md.io_base = 0; #endif }