diff options
Diffstat (limited to 'arch/ppc/platforms/pmac_setup.c')
| -rw-r--r-- | arch/ppc/platforms/pmac_setup.c | 745 |
1 files changed, 0 insertions, 745 deletions
diff --git a/arch/ppc/platforms/pmac_setup.c b/arch/ppc/platforms/pmac_setup.c deleted file mode 100644 index 55d2beffe5606f..00000000000000 --- a/arch/ppc/platforms/pmac_setup.c +++ /dev/null @@ -1,745 +0,0 @@ -/* - * arch/ppc/platforms/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 - * - * Maintained by Benjamin Herrenschmidt (benh@kernel.crashing.org) - * - * 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 <linux/config.h> -#include <linux/init.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/tty.h> -#include <linux/string.h> -#include <linux/delay.h> -#include <linux/ioport.h> -#include <linux/major.h> -#include <linux/initrd.h> -#include <linux/vt_kern.h> -#include <linux/console.h> -#include <linux/ide.h> -#include <linux/pci.h> -#include <linux/adb.h> -#include <linux/cuda.h> -#include <linux/pmu.h> -#include <linux/seq_file.h> -#include <linux/root_dev.h> -#include <linux/bitops.h> -#include <linux/suspend.h> - -#include <asm/reg.h> -#include <asm/sections.h> -#include <asm/prom.h> -#include <asm/system.h> -#include <asm/pgtable.h> -#include <asm/io.h> -#include <asm/pci-bridge.h> -#include <asm/ohare.h> -#include <asm/mediabay.h> -#include <asm/machdep.h> -#include <asm/dma.h> -#include <asm/bootx.h> -#include <asm/cputable.h> -#include <asm/btext.h> -#include <asm/pmac_feature.h> -#include <asm/time.h> -#include <asm/of_device.h> -#include <asm/mmu_context.h> - -#include "pmac_pic.h" -#include "mem_pieces.h" - -#undef SHOW_GATWICK_IRQS - -extern long pmac_time_init(void); -extern unsigned long pmac_get_rtc_time(void); -extern int pmac_set_rtc_time(unsigned long nowtime); -extern void pmac_read_rtc_time(void); -extern void pmac_calibrate_decr(void); -extern void pmac_pcibios_fixup(void); -extern void pmac_find_bridges(void); -extern unsigned long pmac_ide_get_base(int index); -extern void pmac_ide_init_hwif_ports(hw_regs_t *hw, - unsigned long data_port, unsigned long ctrl_port, int *irq); - -extern void pmac_nvram_update(void); -extern unsigned char pmac_nvram_read_byte(int addr); -extern void pmac_nvram_write_byte(int addr, unsigned char val); -extern int pmac_pci_enable_device_hook(struct pci_dev *dev, int initial); -extern void pmac_pcibios_after_init(void); -extern int of_show_percpuinfo(struct seq_file *m, int i); - -struct device_node *memory_node; - -unsigned char drive_info; - -int ppc_override_l2cr = 0; -int ppc_override_l2cr_value; -int has_l2cache = 0; - -static int current_root_goodness = -1; - -extern int pmac_newworld; - -#define DEFAULT_ROOT_DEVICE Root_SDA1 /* sda1 - slightly silly choice */ - -extern void zs_kgdb_hook(int tty_num); -static void ohare_init(void); -#ifdef CONFIG_BOOTX_TEXT -static void pmac_progress(char *s, unsigned short hex); -#endif - -sys_ctrler_t sys_ctrler = SYS_CTRLER_UNKNOWN; - -#ifdef CONFIG_SMP -extern struct smp_ops_t psurge_smp_ops; -extern struct smp_ops_t core99_smp_ops; -#endif /* CONFIG_SMP */ - -static int -pmac_show_cpuinfo(struct seq_file *m) -{ - struct device_node *np; - char *pp; - int plen; - int mbmodel = pmac_call_feature(PMAC_FTR_GET_MB_INFO, - NULL, PMAC_MB_INFO_MODEL, 0); - unsigned int mbflags = (unsigned int)pmac_call_feature(PMAC_FTR_GET_MB_INFO, - NULL, PMAC_MB_INFO_FLAGS, 0); - char* mbname; - - if (pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL, PMAC_MB_INFO_NAME, (int)&mbname) != 0) - mbname = "Unknown"; - - /* find motherboard type */ - seq_printf(m, "machine\t\t: "); - np = find_devices("device-tree"); - if (np != NULL) { - pp = (char *) get_property(np, "model", NULL); - if (pp != NULL) - seq_printf(m, "%s\n", pp); - else - seq_printf(m, "PowerMac\n"); - pp = (char *) get_property(np, "compatible", &plen); - if (pp != NULL) { - seq_printf(m, "motherboard\t:"); - while (plen > 0) { - int l = strlen(pp) + 1; - seq_printf(m, " %s", pp); - plen -= l; - pp += l; - } - seq_printf(m, "\n"); - } - } else - seq_printf(m, "PowerMac\n"); - - /* print parsed model */ - seq_printf(m, "detected as\t: %d (%s)\n", mbmodel, mbname); - seq_printf(m, "pmac flags\t: %08x\n", mbflags); - - /* 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); - seq_printf(m, "L2 cache\t:"); - has_l2cache = 1; - if (get_property(np, "cache-unified", NULL) != 0 && dc) { - seq_printf(m, " %dK unified", *dc / 1024); - } else { - if (ic) - seq_printf(m, " %dK instruction", *ic / 1024); - if (dc) - seq_printf(m, "%s %dK data", - (ic? " +": ""), *dc / 1024); - } - pp = get_property(np, "ram-type", NULL); - if (pp) - seq_printf(m, " %s", pp); - seq_printf(m, "\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; - seq_printf(m, "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) { - seq_printf(m, "l2cr override\t: 0x%x\n", *l2cr); - } - } - - /* Indicate newworld/oldworld */ - seq_printf(m, "pmac-generation\t: %s\n", - pmac_newworld ? "NewWorld" : "OldWorld"); - - - return 0; -} - -static int -pmac_show_percpuinfo(struct seq_file *m, int i) -{ -#ifdef CONFIG_CPU_FREQ_PMAC - extern unsigned int pmac_get_one_cpufreq(int i); - unsigned int freq = pmac_get_one_cpufreq(i); - if (freq != 0) { - seq_printf(m, "clock\t\t: %dMHz\n", freq/1000); - return 0; - } -#endif /* CONFIG_CPU_FREQ_PMAC */ - return of_show_percpuinfo(m, i); -} - -static volatile u32 *sysctrl_regs; - -void __init -pmac_setup_arch(void) -{ - struct device_node *cpu; - int *fp; - unsigned long pvr; - - pvr = PVR_VER(mfspr(SPRN_PVR)); - - /* Set loops_per_jiffy 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) { - if (pvr == 4 || pvr >= 8) - /* 604, G3, G4 etc. */ - loops_per_jiffy = *fp / HZ; - else - /* 601, 603, etc. */ - loops_per_jiffy = *fp / (2*HZ); - } else - loops_per_jiffy = 50000000 / HZ; - } - - /* this area has the CPU identification register - and some registers used by smp boards */ - sysctrl_regs = (volatile u32 *) ioremap(0xf8000000, 0x1000); - ohare_init(); - - /* Lookup PCI hosts */ - pmac_find_bridges(); - - /* Checks "l2cr-value" property in the registry */ - if (cpu_has_feature(CPU_FTR_L2CR)) { - 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(); -#else - if (find_devices("via-cuda")) { - printk("WARNING ! Your machine is Cuda based but your kernel\n"); - printk(" wasn't compiled with CONFIG_ADB_CUDA option !\n"); - } -#endif -#ifdef CONFIG_ADB_PMU - find_via_pmu(); -#else - if (find_devices("via-pmu")) { - printk("WARNING ! Your machine is PMU based but your kernel\n"); - printk(" wasn't compiled with CONFIG_ADB_PMU option !\n"); - } -#endif -#ifdef CONFIG_NVRAM - pmac_nvram_init(); -#endif -#ifdef CONFIG_BLK_DEV_INITRD - if (initrd_start) - ROOT_DEV = Root_RAM0; - else -#endif - ROOT_DEV = DEFAULT_ROOT_DEVICE; - -#ifdef CONFIG_SMP - /* Check for Core99 */ - if (find_devices("uni-n") || find_devices("u3")) - smp_ops = &core99_smp_ops; - else - smp_ops = &psurge_smp_ops; -#endif /* CONFIG_SMP */ - - pci_create_OF_bus_map(); -} - -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"); - } - } -} - -extern char *bootpath; -extern char *bootdevice; -void *boot_host; -int boot_target; -int boot_part; -extern dev_t boot_dev; - -#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) -static dev_t __init -find_ide_boot(void) -{ - char *p; - int n; - dev_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 */ - -static void __init -find_boot_device(void) -{ -#if defined(CONFIG_BLK_DEV_IDE) && defined(CONFIG_BLK_DEV_IDE_PMAC) - boot_dev = find_ide_boot(); -#endif -} - -static int initializing = 1; -/* TODO: Merge the suspend-to-ram with the common code !!! - * currently, this is a stub implementation for suspend-to-disk - * only - */ - -#ifdef CONFIG_SOFTWARE_SUSPEND - -static int pmac_pm_prepare(suspend_state_t state) -{ - printk(KERN_DEBUG "%s(%d)\n", __FUNCTION__, state); - - return 0; -} - -static int pmac_pm_enter(suspend_state_t state) -{ - printk(KERN_DEBUG "%s(%d)\n", __FUNCTION__, state); - - /* Giveup the lazy FPU & vec so we don't have to back them - * up from the low level code - */ - enable_kernel_fp(); - -#ifdef CONFIG_ALTIVEC - if (cur_cpu_spec->cpu_features & CPU_FTR_ALTIVEC) - enable_kernel_altivec(); -#endif /* CONFIG_ALTIVEC */ - - return 0; -} - -static int pmac_pm_finish(suspend_state_t state) -{ - printk(KERN_DEBUG "%s(%d)\n", __FUNCTION__, state); - - /* Restore userland MMU context */ - set_context(current->active_mm->context, current->active_mm->pgd); - - return 0; -} - -static struct pm_ops pmac_pm_ops = { - .pm_disk_mode = PM_DISK_SHUTDOWN, - .prepare = pmac_pm_prepare, - .enter = pmac_pm_enter, - .finish = pmac_pm_finish, -}; - -#endif /* CONFIG_SOFTWARE_SUSPEND */ - -static int pmac_late_init(void) -{ - initializing = 0; -#ifdef CONFIG_SOFTWARE_SUSPEND - pm_set_ops(&pmac_pm_ops); -#endif /* CONFIG_SOFTWARE_SUSPEND */ - return 0; -} - -late_initcall(pmac_late_init); - -/* can't be __init - can be called whenever a disk is first accessed */ -void -note_bootable_part(dev_t dev, int part, int goodness) -{ - static int found_boot = 0; - char *p; - - if (!initializing) - return; - if ((goodness <= current_root_goodness) && - ROOT_DEV != 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 || dev == boot_dev) { - ROOT_DEV = dev + part; - boot_dev = 0; - current_root_goodness = goodness; - } -} - -static 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: ; - } -} - -static 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: ; - } -} - -static void -pmac_halt(void) -{ - pmac_power_off(); -} - -/* - * Read in a property describing some pieces of memory. - */ - -static int __init -get_mem_prop(char *name, struct mem_pieces *mp) -{ - struct reg_property *rp; - int i, s; - unsigned int *ip; - int nac = prom_n_addr_cells(memory_node); - int nsc = prom_n_size_cells(memory_node); - - ip = (unsigned int *) get_property(memory_node, name, &s); - if (ip == NULL) { - printk(KERN_ERR "error: couldn't get %s property on /memory\n", - name); - return 0; - } - s /= (nsc + nac) * 4; - rp = mp->regions; - for (i = 0; i < s; ++i, ip += nac+nsc) { - if (nac >= 2 && ip[nac-2] != 0) - continue; - rp->address = ip[nac-1]; - if (nsc >= 2 && ip[nac+nsc-2] != 0) - rp->size = ~0U; - else - rp->size = ip[nac+nsc-1]; - ++rp; - } - mp->n_regions = rp - mp->regions; - - /* Make sure the pieces are sorted. */ - mem_pieces_sort(mp); - mem_pieces_coalesce(mp); - return 1; -} - -/* - * On systems with Open Firmware, collect information about - * physical RAM and which pieces are already in use. - * At this point, we have (at least) the first 8MB mapped with a BAT. - * Our text, data, bss use something over 1MB, starting at 0. - * Open Firmware may be using 1MB at the 4MB point. - */ -unsigned long __init -pmac_find_end_of_memory(void) -{ - unsigned long a, total; - struct mem_pieces phys_mem; - - /* - * Find out where physical memory is, and check that it - * starts at 0 and is contiguous. It seems that RAM is - * always physically contiguous on Power Macintoshes. - * - * Supporting discontiguous physical memory isn't hard, - * it just makes the virtual <-> physical mapping functions - * more complicated (or else you end up wasting space - * in mem_map). - */ - memory_node = find_devices("memory"); - if (memory_node == NULL || !get_mem_prop("reg", &phys_mem) - || phys_mem.n_regions == 0) - panic("No RAM??"); - a = phys_mem.regions[0].address; - if (a != 0) - panic("RAM doesn't start at physical address 0"); - total = phys_mem.regions[0].size; - - if (phys_mem.n_regions > 1) { - printk("RAM starting at 0x%x is not contiguous\n", - phys_mem.regions[1].address); - printk("Using RAM from 0 to 0x%lx\n", total-1); - } - - return total; -} - -void __init -pmac_init(unsigned long r3, unsigned long r4, unsigned long r5, - unsigned long r6, unsigned long r7) -{ - /* 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.show_cpuinfo = pmac_show_cpuinfo; - ppc_md.show_percpuinfo = pmac_show_percpuinfo; - ppc_md.init_IRQ = pmac_pic_init; - ppc_md.get_irq = pmac_get_irq; /* Changed later on ... */ - - ppc_md.pcibios_fixup = pmac_pcibios_fixup; - ppc_md.pcibios_enable_device_hook = pmac_pci_enable_device_hook; - ppc_md.pcibios_after_init = pmac_pcibios_after_init; - ppc_md.phys_mem_access_prot = pci_phys_mem_access_prot; - - ppc_md.restart = pmac_restart; - ppc_md.power_off = pmac_power_off; - ppc_md.halt = pmac_halt; - - ppc_md.time_init = pmac_time_init; - 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; - - ppc_md.find_end_of_memory = pmac_find_end_of_memory; - - ppc_md.feature_call = pmac_do_feature_call; - -#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE) -#ifdef CONFIG_BLK_DEV_IDE_PMAC - ppc_ide_md.ide_init_hwif = pmac_ide_init_hwif_ports; - ppc_ide_md.default_io_base = pmac_ide_get_base; -#endif /* CONFIG_BLK_DEV_IDE_PMAC */ -#endif /* defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE) */ - -#ifdef CONFIG_BOOTX_TEXT - ppc_md.progress = pmac_progress; -#endif /* CONFIG_BOOTX_TEXT */ - - if (ppc_md.progress) ppc_md.progress("pmac_init(): exit", 0); - -} - -#ifdef CONFIG_BOOTX_TEXT -static void __init -pmac_progress(char *s, unsigned short hex) -{ - if (boot_text_mapped) { - btext_drawstring(s); - btext_drawchar('\n'); - } -} -#endif /* CONFIG_BOOTX_TEXT */ - -static int __init -pmac_declare_of_platform_devices(void) -{ - struct device_node *np; - - np = find_devices("uni-n"); - if (np) { - for (np = np->child; np != NULL; np = np->sibling) - if (strncmp(np->name, "i2c", 3) == 0) { - of_platform_device_create(np, "uni-n-i2c", - NULL); - break; - } - } - np = find_devices("u3"); - if (np) { - for (np = np->child; np != NULL; np = np->sibling) - if (strncmp(np->name, "i2c", 3) == 0) { - of_platform_device_create(np, "u3-i2c", - NULL); - break; - } - } - - np = find_devices("valkyrie"); - if (np) - of_platform_device_create(np, "valkyrie", NULL); - np = find_devices("platinum"); - if (np) - of_platform_device_create(np, "platinum", NULL); - - return 0; -} - -device_initcall(pmac_declare_of_platform_devices); |