/* * Initial setup-routines for HP 9000 based hardware. * * Copyright (C) 1991, 1992, 1995 Linus Torvalds * Modifications for PA-RISC (C) 1999 Helge Deller * Modifications copyright 1999 SuSE GmbH (Philipp Rumpf) * Modifications copyright 2000 Martin K. Petersen * Modifications copyright 2000 Philipp Rumpf * Modifications copyright 2001 Ryan Bradetich * * Initial PA-RISC Version: 04-23-1999 by Helge Deller * * 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, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * */ #include #include #include #include #include #define PCI_DEBUG #include #undef PCI_DEBUG #include #include #include #include #include #include #include #include #include #include /* for pa7300lc_init() proto */ #include #include #include #include #include static char __initdata command_line[COMMAND_LINE_SIZE]; /* Intended for ccio/sba/cpu statistics under /proc/bus/{runway|gsc} */ struct proc_dir_entry * proc_runway_root __read_mostly = NULL; struct proc_dir_entry * proc_gsc_root __read_mostly = NULL; struct proc_dir_entry * proc_mckinley_root __read_mostly = NULL; void __init setup_cmdline(char **cmdline_p) { extern unsigned int boot_args[]; /* Collect stuff passed in from the boot loader */ /* boot_args[0] is free-mem start, boot_args[1] is ptr to command line */ if (boot_args[0] < 64) { /* called from hpux boot loader */ boot_command_line[0] = '\0'; } else { strlcpy(boot_command_line, (char *)__va(boot_args[1]), COMMAND_LINE_SIZE); #ifdef CONFIG_BLK_DEV_INITRD if (boot_args[2] != 0) /* did palo pass us a ramdisk? */ { initrd_start = (unsigned long)__va(boot_args[2]); initrd_end = (unsigned long)__va(boot_args[3]); } #endif } strcpy(command_line, boot_command_line); *cmdline_p = command_line; } #ifdef CONFIG_PA11 void __init dma_ops_init(void) { switch (boot_cpu_data.cpu_type) { case pcx: /* * We've got way too many dependencies on 1.1 semantics * to support 1.0 boxes at this point. */ panic( "PA-RISC Linux currently only supports machines that conform to\n" "the PA-RISC 1.1 or 2.0 architecture specification.\n"); case pcxl2: pa7300lc_init(); case pcxl: /* falls through */ case pcxs: case pcxt: hppa_dma_ops = &dma_noncoherent_ops; break; default: break; } } #endif extern void collect_boot_cpu_data(void); void __init setup_arch(char **cmdline_p) { #ifdef CONFIG_64BIT extern int parisc_narrow_firmware; #endif unwind_init(); init_per_cpu(smp_processor_id()); /* Set Modes & Enable FP */ #ifdef CONFIG_64BIT printk(KERN_INFO "The 64-bit Kernel has started...\n"); #else printk(KERN_INFO "The 32-bit Kernel has started...\n"); #endif printk(KERN_INFO "Kernel default page size is %d KB. Huge pages ", (int)(PAGE_SIZE / 1024)); #ifdef CONFIG_HUGETLB_PAGE printk(KERN_CONT "enabled with %d MB physical and %d MB virtual size", 1 << (REAL_HPAGE_SHIFT - 20), 1 << (HPAGE_SHIFT - 20)); #else printk(KERN_CONT "disabled"); #endif printk(KERN_CONT ".\n"); /* * Check if initial kernel page mappings are sufficient. * panic early if not, else we may access kernel functions * and variables which can't be reached. */ if (__pa((unsigned long) &_end) >= KERNEL_INITIAL_SIZE) panic("KERNEL_INITIAL_ORDER too small!"); pdc_console_init(); #ifdef CONFIG_64BIT if(parisc_narrow_firmware) { printk(KERN_INFO "Kernel is using PDC in 32-bit mode.\n"); } #endif setup_pdc(); setup_cmdline(cmdline_p); collect_boot_cpu_data(); do_memory_inventory(); /* probe for physical memory */ parisc_cache_init(); paging_init(); #ifdef CONFIG_CHASSIS_LCD_LED /* initialize the LCD/LED after boot_cpu_data is available ! */ led_init(); /* LCD/LED initialization */ #endif #ifdef CONFIG_PA11 dma_ops_init(); #endif #if defined(CONFIG_VT) && defined(CONFIG_DUMMY_CONSOLE) conswitchp = &dummy_con; /* we use do_take_over_console() later ! */ #endif clear_sched_clock_stable(); } /* * Display CPU info for all CPUs. * for parisc this is in processor.c */ extern int show_cpuinfo (struct seq_file *m, void *v); static void * c_start (struct seq_file *m, loff_t *pos) { /* Looks like the caller will call repeatedly until we return * 0, signaling EOF perhaps. This could be used to sequence * through CPUs for example. Since we print all cpu info in our * show_cpuinfo() disregarding 'pos' (which I assume is 'v' above) * we only allow for one "position". */ return ((long)*pos < 1) ? (void *)1 : NULL; } static void * c_next (struct seq_file *m, void *v, loff_t *pos) { ++*pos; return c_start(m, pos); } static void c_stop (struct seq_file *m, void *v) { } const struct seq_operations cpuinfo_op = { .start = c_start, .next = c_next, .stop = c_stop, .show = show_cpuinfo }; static void __init parisc_proc_mkdir(void) { /* ** Can't call proc_mkdir() until after proc_root_init() has been ** called by start_kernel(). In other words, this code can't ** live in arch/.../setup.c because start_parisc() calls ** start_kernel(). */ switch (boot_cpu_data.cpu_type) { case pcxl: case pcxl2: if (NULL == proc_gsc_root) { proc_gsc_root = proc_mkdir("bus/gsc", NULL); } break; case pcxt_: case pcxu: case pcxu_: case pcxw: case pcxw_: case pcxw2: if (NULL == proc_runway_root) { proc_runway_root = proc_mkdir("bus/runway", NULL); } break; case mako: case mako2: if (NULL == proc_mckinley_root) { proc_mckinley_root = proc_mkdir("bus/mckinley", NULL); } break; default: /* FIXME: this was added to prevent the compiler * complaining about missing pcx, pcxs and pcxt * I'm assuming they have neither gsc nor runway */ break; } } static struct resource central_bus = { .name = "Central Bus", .start = F_EXTEND(0xfff80000), .end = F_EXTEND(0xfffaffff), .flags = IORESOURCE_MEM, }; static struct resource local_broadcast = { .name = "Local Broadcast", .start = F_EXTEND(0xfffb0000), .end = F_EXTEND(0xfffdffff), .flags = IORESOURCE_MEM, }; static struct resource global_broadcast = { .name = "Global Broadcast", .start = F_EXTEND(0xfffe0000), .end = F_EXTEND(0xffffffff), .flags = IORESOURCE_MEM, }; static int __init parisc_init_resources(void) { int result; result = request_resource(&iomem_resource, ¢ral_bus); if (result < 0) { printk(KERN_ERR "%s: failed to claim %s address space!\n", __FILE__, central_bus.name); return result; } result = request_resource(&iomem_resource, &local_broadcast); if (result < 0) { printk(KERN_ERR "%s: failed to claim %saddress space!\n", __FILE__, local_broadcast.name); return result; } result = request_resource(&iomem_resource, &global_broadcast); if (result < 0) { printk(KERN_ERR "%s: failed to claim %s address space!\n", __FILE__, global_broadcast.name); return result; } return 0; } extern void gsc_init(void); extern void processor_init(void); extern void ccio_init(void); extern void hppb_init(void); extern void dino_init(void); extern void iosapic_init(void); extern void lba_init(void); extern void sba_init(void); extern void eisa_init(void); static int __init parisc_init(void) { u32 osid = (OS_ID_LINUX << 16); parisc_proc_mkdir(); parisc_init_resources(); do_device_inventory(); /* probe for hardware */ parisc_pdc_chassis_init(); /* set up a new led state on systems shipped LED State panel */ pdc_chassis_send_status(PDC_CHASSIS_DIRECT_BSTART); /* tell PDC we're Linux. Nevermind failure. */ pdc_stable_write(0x40, &osid, sizeof(osid)); /* start with known state */ flush_cache_all_local(); flush_tlb_all_local(NULL); processor_init(); #ifdef CONFIG_SMP pr_info("CPU(s): %d out of %d %s at %d.%06d MHz online\n", num_online_cpus(), num_present_cpus(), #else pr_info("CPU(s): 1 x %s at %d.%06d MHz\n", #endif boot_cpu_data.cpu_name, boot_cpu_data.cpu_hz / 1000000, boot_cpu_data.cpu_hz % 1000000 ); parisc_setup_cache_timing(); /* These are in a non-obvious order, will fix when we have an iotree */ #if defined(CONFIG_IOSAPIC) iosapic_init(); #endif #if defined(CONFIG_IOMMU_SBA) sba_init(); #endif #if defined(CONFIG_PCI_LBA) lba_init(); #endif /* CCIO before any potential subdevices */ #if defined(CONFIG_IOMMU_CCIO) ccio_init(); #endif /* * Need to register Asp & Wax before the EISA adapters for the IRQ * regions. EISA must come before PCI to be sure it gets IRQ region * 0. */ #if defined(CONFIG_GSC_LASI) || defined(CONFIG_GSC_WAX) gsc_init(); #endif #ifdef CONFIG_EISA eisa_init(); #endif #if defined(CONFIG_HPPB) hppb_init(); #endif #if defined(CONFIG_GSC_DINO) dino_init(); #endif #ifdef CONFIG_CHASSIS_LCD_LED register_led_regions(); /* register LED port info in procfs */ #endif return 0; } arch_initcall(parisc_init); void __init start_parisc(void) { extern void early_trap_init(void); int ret, cpunum; struct pdc_coproc_cfg coproc_cfg; /* check QEMU/SeaBIOS marker in PAGE0 */ running_on_qemu = (memcmp(&PAGE0->pad0, "SeaBIOS", 8) == 0); cpunum = smp_processor_id(); init_cpu_topology(); set_firmware_width_unlocked(); ret = pdc_coproc_cfg_unlocked(&coproc_cfg); if (ret >= 0 && coproc_cfg.ccr_functional) { mtctl(coproc_cfg.ccr_functional, 10); per_cpu(cpu_data, cpunum).fp_rev = coproc_cfg.revision; per_cpu(cpu_data, cpunum).fp_model = coproc_cfg.model; asm volatile ("fstd %fr0,8(%sp)"); } else { panic("must have an fpu to boot linux"); } early_trap_init(); /* initialize checksum of fault_vector */ start_kernel(); // not reached }