| /* |
| * 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 |
| * |
| * 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/blk.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/irq.h> |
| #include <linux/seq_file.h> |
| #include <linux/blkdev.h> |
| #include <linux/genhd.h> |
| |
| #include <asm/processor.h> |
| #include <asm/sections.h> |
| #include <asm/prom.h> |
| #include <asm/system.h> |
| #include <asm/pgtable.h> |
| #include <asm/bitops.h> |
| #include <asm/io.h> |
| #include <asm/pci-bridge.h> |
| #include <asm/ohare.h> |
| #include <asm/mediabay.h> |
| #include <asm/machdep.h> |
| #include <asm/keyboard.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 "pmac_pic.h" |
| #include "mem_pieces.h" |
| #include "scsi.h" /* sd_find_target */ |
| #include "sd.h" |
| #include "mac.h" |
| |
| 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 ide_ioreg_t pmac_ide_get_base(int index); |
| extern void pmac_ide_init_hwif_ports(hw_regs_t *hw, |
| ide_ioreg_t data_port, ide_ioreg_t ctrl_port, int *irq); |
| |
| extern int mackbd_setkeycode(unsigned int scancode, unsigned int keycode); |
| extern int mackbd_getkeycode(unsigned int scancode); |
| extern int mackbd_translate(unsigned char keycode, unsigned char *keycodep, |
| char raw_mode); |
| extern char mackbd_unexpected_up(unsigned char keycode); |
| extern void mackbd_leds(unsigned char leds); |
| extern void __init mackbd_init_hw(void); |
| extern int mac_hid_kbd_translate(unsigned char scancode, unsigned char *keycode, |
| char raw_mode); |
| extern char mac_hid_kbd_unexpected_up(unsigned char keycode); |
| extern void mac_hid_init_hw(void); |
| extern unsigned char mac_hid_kbd_sysrq_xlate[]; |
| extern unsigned char pckbd_sysrq_xlate[]; |
| extern unsigned char mackbd_sysrq_xlate[]; |
| 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 int keyboard_sends_linux_keycodes; |
| extern void pmac_nvram_update(void); |
| |
| extern int pmac_pci_enable_device_hook(struct pci_dev *dev, int initial); |
| extern void pmac_pcibios_after_init(void); |
| |
| 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 char saved_command_line[]; |
| |
| extern int pmac_newworld; |
| |
| #define DEFAULT_ROOT_DEVICE 0x0801 /* sda1 - slightly silly choice */ |
| |
| extern void zs_kgdb_hook(int tty_num); |
| static void ohare_init(void); |
| #ifdef CONFIG_BOOTX_TEXT |
| 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 */ |
| |
| /* |
| * Assume here that all clock rates are the same in a |
| * smp system. -- Cort |
| */ |
| int __openfirmware |
| of_show_percpuinfo(struct seq_file *m, int i) |
| { |
| struct device_node *cpu_node; |
| int *fp, s; |
| |
| cpu_node = find_type_devices("cpu"); |
| if (!cpu_node) |
| return 0; |
| for (s = 0; s < i && cpu_node->next; s++) |
| cpu_node = cpu_node->next; |
| fp = (int *) get_property(cpu_node, "clock-frequency", NULL); |
| if (fp) |
| seq_printf(m, "clock\t\t: %dMHz\n", *fp / 1000000); |
| return 0; |
| } |
| |
| int __pmac |
| 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; |
| } |
| |
| #ifdef CONFIG_VT |
| /* |
| * Dummy mksound function that does nothing. |
| * The real one is in the dmasound driver. |
| */ |
| static void __pmac |
| pmac_mksound(unsigned int hz, unsigned int ticks) |
| { |
| } |
| #endif /* CONFIG_VT */ |
| |
| static volatile u32 *sysctrl_regs; |
| |
| void __init |
| pmac_setup_arch(void) |
| { |
| struct device_node *cpu; |
| int *fp; |
| unsigned long pvr; |
| |
| pvr = PVR_VER(mfspr(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 (cur_cpu_spec[0]->cpu_features & 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_DUMMY_CONSOLE |
| conswitchp = &dummy_con; |
| #endif |
| #ifdef CONFIG_VT |
| kd_mksound = pmac_mksound; |
| #endif |
| #ifdef CONFIG_BLK_DEV_INITRD |
| if (initrd_start) |
| ROOT_DEV = MKDEV(RAMDISK_MAJOR, 0); |
| else |
| #endif |
| ROOT_DEV = to_kdev_t(DEFAULT_ROOT_DEVICE); |
| |
| #ifdef CONFIG_SMP |
| /* Check for Core99 */ |
| if (find_devices("uni-n")) |
| ppc_md.smp_ops = &core99_smp_ops; |
| else |
| ppc_md.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 kdev_t boot_dev; |
| |
| void __init |
| pmac_init2(void) |
| { |
| #ifdef CONFIG_ADB_PMU |
| via_pmu_start(); |
| #endif |
| #ifdef CONFIG_ADB_CUDA |
| via_cuda_start(); |
| #endif |
| #ifdef CONFIG_PMAC_PBOOK |
| media_bay_init(); |
| #endif |
| pmac_feature_late_init(); |
| } |
| |
| /* Borrowed from fs/partition/check.c */ |
| static unsigned char* __init |
| read_one_block(struct block_device *bdev, unsigned long n, struct page **v) |
| { |
| struct address_space *mapping = bdev->bd_inode->i_mapping; |
| int sect = PAGE_CACHE_SIZE / 512; |
| struct page *page; |
| |
| page = read_cache_page(mapping, n/sect, |
| (filler_t *)mapping->a_ops->readpage, NULL); |
| if (!IS_ERR(page)) { |
| wait_on_page(page); |
| if (!Page_Uptodate(page)) |
| goto fail; |
| if (PageError(page)) |
| goto fail; |
| *v = page; |
| return (unsigned char *)page_address(page) + 512 * (n % sect); |
| fail: |
| page_cache_release(page); |
| } |
| *v = NULL; |
| return NULL; |
| } |
| |
| #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 /* CONFIG_SCSI */ |
| |
| #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) |
| { |
| #if defined(CONFIG_SCSI) && defined(CONFIG_BLK_DEV_SD) |
| 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 |
| } |
| |
| static void __init |
| check_bootable_part(kdev_t dev, int blk, struct mac_partition *part) |
| { |
| int goodness = 0; |
| |
| macpart_fix_string(part->processor, 16); |
| macpart_fix_string(part->name, 32); |
| macpart_fix_string(part->type, 32); |
| |
| if ((be32_to_cpu(part->status) & MAC_STATUS_BOOTABLE) |
| && strcasecmp(part->processor, "powerpc") == 0) |
| goodness++; |
| |
| if (strcasecmp(part->type, "Apple_UNIX_SVR2") == 0 |
| || (strnicmp(part->type, "Linux", 5) == 0 |
| && strcasecmp(part->type, "Linux_swap") != 0)) { |
| int i, l; |
| |
| goodness++; |
| l = strlen(part->name); |
| if (strcmp(part->name, "/") == 0) |
| goodness++; |
| for (i = 0; i <= l - 4; ++i) { |
| if (strnicmp(part->name + i, "root", |
| 4) == 0) { |
| goodness += 2; |
| break; |
| } |
| } |
| if (strnicmp(part->name, "swap", 4) == 0) |
| goodness--; |
| } |
| |
| if (goodness > current_root_goodness) { |
| ROOT_DEV = MKDEV(MAJOR(dev), MINOR(dev) + blk); |
| current_root_goodness = goodness; |
| } |
| } |
| |
| static void __init |
| check_bootable_disk(kdev_t dev, struct block_device *bdev) |
| { |
| struct mac_partition *part; |
| struct mac_driver_desc *md; |
| struct page* pg; |
| unsigned secsize, blocks_in_map, blk; |
| unsigned char* data; |
| |
| /* Check driver descriptor */ |
| md = (struct mac_driver_desc *) read_one_block(bdev, 0, &pg); |
| if (!md) |
| return; |
| if (be16_to_cpu(md->signature) != MAC_DRIVER_MAGIC) |
| goto fail; |
| secsize = be16_to_cpu(md->block_size); |
| page_cache_release(pg); |
| |
| /* Check if it looks like a mac partition map */ |
| data = read_one_block(bdev, secsize/512, &pg); |
| if (!data) |
| goto fail; |
| part = (struct mac_partition *) (data + secsize%512); |
| if (be16_to_cpu(part->signature) != MAC_PARTITION_MAGIC) |
| goto fail; |
| |
| /* Iterate the partition map */ |
| blocks_in_map = be32_to_cpu(part->map_count); |
| for (blk = 1; blk <= blocks_in_map; ++blk) { |
| int pos = blk * secsize; |
| page_cache_release(pg); |
| data = read_one_block(bdev, pos/512, &pg); |
| if (!data) |
| break; |
| part = (struct mac_partition *) (data + pos%512); |
| if (be16_to_cpu(part->signature) != MAC_PARTITION_MAGIC) |
| break; |
| check_bootable_part(dev, blk, part); |
| } |
| fail: |
| if (pg) |
| page_cache_release(pg); |
| } |
| |
| static int __init |
| walk_bootable(struct gendisk *hd, void *data) |
| { |
| int drive; |
| |
| for (drive=0; drive<hd->nr_real; drive++) { |
| kdev_t dev; |
| struct block_device *bdev; |
| int rc; |
| |
| dev = MKDEV(hd->major, drive << hd->minor_shift); |
| if (boot_dev && boot_dev != dev) |
| continue; |
| bdev = bdget(kdev_t_to_nr(dev)); |
| if (bdev == NULL) |
| continue; |
| rc = blkdev_get(bdev, FMODE_READ, 0, BDEV_RAW); |
| if (rc == 0) { |
| check_bootable_disk(dev, bdev); |
| blkdev_put(bdev, BDEV_RAW); |
| } |
| } |
| |
| return 0; |
| } |
| |
| void __init |
| pmac_discover_root(void) |
| { |
| char* p; |
| |
| /* Check if root devices already got selected by other ways */ |
| 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; |
| |
| /* Find the device used for booting if we can */ |
| find_boot_device(); |
| |
| /* Try to locate a partition */ |
| walk_gendisk(walk_bootable, NULL); |
| } |
| |
| void __pmac |
| pmac_restart(char *cmd) |
| { |
| #ifdef CONFIG_ADB_CUDA |
| struct adb_request req; |
| #endif /* CONFIG_ADB_CUDA */ |
| |
| #ifdef CONFIG_NVRAM |
| pmac_nvram_update(); |
| #endif |
| |
| 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 |
| pmac_power_off(void) |
| { |
| #ifdef CONFIG_ADB_CUDA |
| struct adb_request req; |
| #endif /* CONFIG_ADB_CUDA */ |
| |
| #ifdef CONFIG_NVRAM |
| pmac_nvram_update(); |
| #endif |
| |
| 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 |
| 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 |
| select_adb_keyboard(void) |
| { |
| #ifdef CONFIG_VT |
| #ifdef CONFIG_INPUT |
| ppc_md.kbd_init_hw = mac_hid_init_hw; |
| ppc_md.kbd_translate = mac_hid_kbd_translate; |
| ppc_md.kbd_unexpected_up = mac_hid_kbd_unexpected_up; |
| ppc_md.kbd_setkeycode = 0; |
| ppc_md.kbd_getkeycode = 0; |
| ppc_md.kbd_leds = 0; |
| #ifdef CONFIG_MAGIC_SYSRQ |
| #ifdef CONFIG_MAC_ADBKEYCODES |
| if (!keyboard_sends_linux_keycodes) { |
| ppc_md.ppc_kbd_sysrq_xlate = mac_hid_kbd_sysrq_xlate; |
| SYSRQ_KEY = 0x69; |
| } else |
| #endif /* CONFIG_MAC_ADBKEYCODES */ |
| { |
| ppc_md.ppc_kbd_sysrq_xlate = pckbd_sysrq_xlate; |
| SYSRQ_KEY = 0x54; |
| } |
| #endif /* CONFIG_MAGIC_SYSRQ */ |
| #elif 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 /* CONFIG_MAGIC_SYSRQ */ |
| #endif /* CONFIG_INPUT_ADBHID/CONFIG_ADB_KEYBOARD */ |
| #endif /* CONFIG_VT */ |
| } |
| |
| 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 = of_show_percpuinfo; |
| ppc_md.irq_cannonicalize = NULL; |
| ppc_md.init_IRQ = pmac_pic_init; |
| ppc_md.get_irq = pmac_get_irq; /* Changed later on ... */ |
| ppc_md.init = pmac_init2; |
| |
| 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.discover_root = pmac_discover_root; |
| |
| 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; |
| |
| select_adb_keyboard(); |
| |
| #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 |
| void __init |
| pmac_progress(char *s, unsigned short hex) |
| { |
| if (boot_text_mapped) { |
| btext_drawstring(s); |
| btext_drawchar('\n'); |
| } |
| } |
| #endif /* CONFIG_BOOTX_TEXT */ |