/* * 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 #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; int has_l2cache = 0; 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); static void init_p2pbridge(void); static void init_uninorth(void); #ifdef CONFIG_BOOTX_TEXT void pmac_progress(char *s, unsigned short hex); #endif __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:"); has_l2cache = 1; 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) { int n; struct reg_property *reg = (struct reg_property *) get_property(np, "reg", &n); if (reg != 0) { unsigned long total = 0; for (n /= sizeof(struct reg_property); n > 0; --n) total += (reg++)->size; len += sprintf(buffer+len, "memory\t\t: %luMB\n", total >> 20); } } /* Checks "l2cr-value" property in the registry */ np = find_devices("cpus"); if (np == 0) np = find_type_devices("cpu"); 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. We just need to get the prototype from sd.h */ #include #include "../../../drivers/scsi/scsi.h" #include "../../../drivers/scsi/sd.h" #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; void __init pmac_setup_arch(void) { 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 8: /* G3 */ case 9: /* 604e */ case 10: /* mach V (604ev5) */ case 12: /* G4 */ 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(); pmac_find_bridges(); init_p2pbridge(); init_uninorth(); /* Checks "l2cr-value" property in the registry */ if ( (_get_PVR() >> 16) == 8 || (_get_PVR() >> 16) == 12 ) { struct device_node *np = find_devices("cpus"); if (np == 0) np = find_type_devices("cpu"); 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"); #ifdef CONFIG_KGDB zs_kgdb_hook(0); #endif #ifdef CONFIG_ADB_CUDA find_via_cuda(); #endif #ifdef CONFIG_ADB_PMU find_via_pmu(); #endif #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); } /* * Tweak the PCI-PCI bridge chip on the blue & white G3s. */ static void __init init_p2pbridge(void) { struct device_node *p2pbridge; unsigned char bus, devfn; unsigned short val; /* XXX it would be better here to identify the specific PCI-PCI bridge chip we have. */ if ((p2pbridge = find_devices("pci-bridge")) == 0 || p2pbridge->parent == NULL || strcmp(p2pbridge->parent->name, "pci") != 0) return; if (pci_device_loc(p2pbridge, &bus, &devfn) < 0) return; if (ppc_md.pcibios_read_config_word(bus, devfn, PCI_BRIDGE_CONTROL, &val) < 0) { printk(KERN_ERR "init_p2pbridge: couldn't read bridge control\n"); return; } val &= ~PCI_BRIDGE_CTL_MASTER_ABORT; ppc_md.pcibios_write_config_word(bus, devfn, PCI_BRIDGE_CONTROL, val); ppc_md.pcibios_read_config_word(bus, devfn, PCI_BRIDGE_CONTROL, &val); } static void __init 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; if(has_l2cache) printk(KERN_INFO "Level 2 cache enabled\n"); } } } static void __init init_uninorth(void) { /* * Turns on the gmac clock so that it responds to PCI cycles * later, the driver may want to turn it off again to save * power when interface is down */ struct device_node* uni_n = find_devices("uni-n"); struct device_node* gmac = find_devices("ethernet"); unsigned long* addr; if (!uni_n || uni_n->n_addrs < 1) return; addr = ioremap(uni_n->addrs[0].address, 0x300); while(gmac) { if (device_is_compatible(gmac, "gmac")) break; gmac = gmac->next; } if (gmac) { *(addr + 8) |= 2; eieio(); } } extern char *bootpath; extern char *bootdevice; void *boot_host; int boot_target; int boot_part; kdev_t boot_dev; extern void via_pmu_start(void); void __init pmac_init2(void) { #ifdef CONFIG_ADB_PMU via_pmu_start(); #endif #ifdef CONFIG_NVRAM pmac_nvram_init(); #endif #ifdef CONFIG_PMAC_PBOOK media_bay_init(); #endif } #ifdef CONFIG_SCSI void __init 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 #if defined(CONFIG_BLK_DEV_IDE) && defined(CONFIG_BLK_DEV_IDE_PMAC) kdev_t __init find_ide_boot(void) { char *p; int n; kdev_t __init pmac_find_ide_boot(char *bootdevice, int n); if (bootdevice == NULL) return 0; p = strrchr(bootdevice, '/'); if (p == NULL) return 0; n = p - bootdevice; return pmac_find_ide_boot(bootdevice, n); } #endif /* CONFIG_BLK_DEV_IDE && CONFIG_BLK_DEV_IDE_PMAC */ void __init 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 #if defined(CONFIG_BLK_DEV_IDE) && defined(CONFIG_BLK_DEV_IDE_PMAC) boot_dev = find_ide_boot(); #endif } /* can't be __init - 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 (boot_dev == 0 || dev == boot_dev) { ROOT_DEV = MKDEV(MAJOR(dev), MINOR(dev) + part); boot_dev = NODEV; printk(" (root on %d)", part); } } void pmac_restart(char *cmd) { #ifdef CONFIG_ADB_CUDA struct adb_request req; #endif /* CONFIG_ADB_CUDA */ switch (sys_ctrler) { #ifdef CONFIG_ADB_CUDA case SYS_CTRLER_CUDA: cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_RESET_SYSTEM); for (;;) cuda_poll(); break; #endif /* CONFIG_ADB_CUDA */ #ifdef CONFIG_ADB_PMU case SYS_CTRLER_PMU: pmu_restart(); break; #endif /* CONFIG_ADB_PMU */ default: } } void pmac_power_off(void) { #ifdef CONFIG_ADB_CUDA struct adb_request req; #endif /* CONFIG_ADB_CUDA */ switch (sys_ctrler) { #ifdef CONFIG_ADB_CUDA case SYS_CTRLER_CUDA: cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_POWERDOWN); for (;;) cuda_poll(); break; #endif /* CONFIG_ADB_CUDA */ #ifdef CONFIG_ADB_PMU case SYS_CTRLER_PMU: pmu_shutdown(); break; #endif /* CONFIG_ADB_PMU */ 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) { _insw_ns((unsigned short *)(port+_IO_BASE), buf, ns); } void pmac_ide_outsw(ide_ioreg_t port, void *buf, int ns) { _outsw_ns((unsigned short *)(port+_IO_BASE), buf, ns); } int pmac_ide_default_irq(ide_ioreg_t base) { return 0; } #if defined(CONFIG_BLK_DEV_IDE) && defined(CONFIG_BLK_DEV_IDE_PMAC) extern ide_ioreg_t pmac_ide_get_base(int index); #endif ide_ioreg_t pmac_ide_default_io_base(int index) { #if defined(CONFIG_BLK_DEV_IDE) && defined(CONFIG_BLK_DEV_IDE_PMAC) return pmac_ide_get_base(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); } #if defined(CONFIG_BLK_DEV_IDE) && defined(CONFIG_BLK_DEV_IDE_PMAC) /* This is declared in drivers/block/ide-pmac.c */ void pmac_ide_init_hwif_ports (hw_regs_t *hw, ide_ioreg_t data_port, ide_ioreg_t ctrl_port, int *irq); #else /* * This registers the standard ports for this architecture with the IDE * driver. */ void pmac_ide_init_hwif_ports(hw_regs_t *hw, ide_ioreg_t data_port, ide_ioreg_t ctrl_port, int *irq) { } #endif #endif void __init 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.get_irq = pmac_get_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_ADB_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.ppc_kbd_sysrq_xlate = mackbd_sysrq_xlate; SYSRQ_KEY = 0x69; #endif #endif #if defined(CONFIG_BLK_DEV_IDE) && 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.ide_check_region = pmac_ide_check_region; ppc_ide_md.ide_request_region = pmac_ide_request_region; ppc_ide_md.ide_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 = _IO_BASE; /* actually too early for this :-( */ #endif #ifdef CONFIG_BOOTX_TEXT ppc_md.progress = pmac_progress; #endif if (ppc_md.progress) ppc_md.progress("pmac_init(): exit", 0); } #ifdef CONFIG_BOOTX_TEXT extern void drawchar(char c); extern void drawstring(const char *c); extern boot_infos_t *disp_bi; void pmac_progress(char *s, unsigned short hex) { if (disp_bi == 0) return; prom_drawstring(s); prom_drawchar('\n'); } #endif CONFIG_BOOTX_TEXT