diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/powerpc/kernel/setup-common.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/powerpc/kernel/setup-common.c | 733 |
1 files changed, 0 insertions, 733 deletions
diff --git a/ANDROID_3.4.5/arch/powerpc/kernel/setup-common.c b/ANDROID_3.4.5/arch/powerpc/kernel/setup-common.c deleted file mode 100644 index afd4f051..00000000 --- a/ANDROID_3.4.5/arch/powerpc/kernel/setup-common.c +++ /dev/null @@ -1,733 +0,0 @@ -/* - * Common boot and setup code for both 32-bit and 64-bit. - * Extracted from arch/powerpc/kernel/setup_64.c. - * - * Copyright (C) 2001 PPC64 Team, IBM Corp - * - * 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. - */ - -#undef DEBUG - -#include <linux/export.h> -#include <linux/string.h> -#include <linux/sched.h> -#include <linux/init.h> -#include <linux/kernel.h> -#include <linux/reboot.h> -#include <linux/delay.h> -#include <linux/initrd.h> -#include <linux/platform_device.h> -#include <linux/seq_file.h> -#include <linux/ioport.h> -#include <linux/console.h> -#include <linux/screen_info.h> -#include <linux/root_dev.h> -#include <linux/notifier.h> -#include <linux/cpu.h> -#include <linux/unistd.h> -#include <linux/serial.h> -#include <linux/serial_8250.h> -#include <linux/debugfs.h> -#include <linux/percpu.h> -#include <linux/memblock.h> -#include <linux/of_platform.h> -#include <asm/io.h> -#include <asm/paca.h> -#include <asm/prom.h> -#include <asm/processor.h> -#include <asm/vdso_datapage.h> -#include <asm/pgtable.h> -#include <asm/smp.h> -#include <asm/elf.h> -#include <asm/machdep.h> -#include <asm/time.h> -#include <asm/cputable.h> -#include <asm/sections.h> -#include <asm/firmware.h> -#include <asm/btext.h> -#include <asm/nvram.h> -#include <asm/setup.h> -#include <asm/rtas.h> -#include <asm/iommu.h> -#include <asm/serial.h> -#include <asm/cache.h> -#include <asm/page.h> -#include <asm/mmu.h> -#include <asm/xmon.h> -#include <asm/cputhreads.h> -#include <mm/mmu_decl.h> -#include <asm/fadump.h> - -#include "setup.h" - -#ifdef DEBUG -#include <asm/udbg.h> -#define DBG(fmt...) udbg_printf(fmt) -#else -#define DBG(fmt...) -#endif - -/* The main machine-dep calls structure - */ -struct machdep_calls ppc_md; -EXPORT_SYMBOL(ppc_md); -struct machdep_calls *machine_id; -EXPORT_SYMBOL(machine_id); - -unsigned long klimit = (unsigned long) _end; - -char cmd_line[COMMAND_LINE_SIZE]; - -/* - * This still seems to be needed... -- paulus - */ -struct screen_info screen_info = { - .orig_x = 0, - .orig_y = 25, - .orig_video_cols = 80, - .orig_video_lines = 25, - .orig_video_isVGA = 1, - .orig_video_points = 16 -}; - -/* Variables required to store legacy IO irq routing */ -int of_i8042_kbd_irq; -EXPORT_SYMBOL_GPL(of_i8042_kbd_irq); -int of_i8042_aux_irq; -EXPORT_SYMBOL_GPL(of_i8042_aux_irq); - -#ifdef __DO_IRQ_CANON -/* XXX should go elsewhere eventually */ -int ppc_do_canonicalize_irqs; -EXPORT_SYMBOL(ppc_do_canonicalize_irqs); -#endif - -/* also used by kexec */ -void machine_shutdown(void) -{ -#ifdef CONFIG_FA_DUMP - /* - * if fadump is active, cleanup the fadump registration before we - * shutdown. - */ - fadump_cleanup(); -#endif - - if (ppc_md.machine_shutdown) - ppc_md.machine_shutdown(); -} - -void machine_restart(char *cmd) -{ - machine_shutdown(); - if (ppc_md.restart) - ppc_md.restart(cmd); -#ifdef CONFIG_SMP - smp_send_stop(); -#endif - printk(KERN_EMERG "System Halted, OK to turn off power\n"); - local_irq_disable(); - while (1) ; -} - -void machine_power_off(void) -{ - machine_shutdown(); - if (ppc_md.power_off) - ppc_md.power_off(); -#ifdef CONFIG_SMP - smp_send_stop(); -#endif - printk(KERN_EMERG "System Halted, OK to turn off power\n"); - local_irq_disable(); - while (1) ; -} -/* Used by the G5 thermal driver */ -EXPORT_SYMBOL_GPL(machine_power_off); - -void (*pm_power_off)(void) = machine_power_off; -EXPORT_SYMBOL_GPL(pm_power_off); - -void machine_halt(void) -{ - machine_shutdown(); - if (ppc_md.halt) - ppc_md.halt(); -#ifdef CONFIG_SMP - smp_send_stop(); -#endif - printk(KERN_EMERG "System Halted, OK to turn off power\n"); - local_irq_disable(); - while (1) ; -} - - -#ifdef CONFIG_TAU -extern u32 cpu_temp(unsigned long cpu); -extern u32 cpu_temp_both(unsigned long cpu); -#endif /* CONFIG_TAU */ - -#ifdef CONFIG_SMP -DEFINE_PER_CPU(unsigned int, cpu_pvr); -#endif - -static void show_cpuinfo_summary(struct seq_file *m) -{ - struct device_node *root; - const char *model = NULL; -#if defined(CONFIG_SMP) && defined(CONFIG_PPC32) - unsigned long bogosum = 0; - int i; - for_each_online_cpu(i) - bogosum += loops_per_jiffy; - seq_printf(m, "total bogomips\t: %lu.%02lu\n", - bogosum/(500000/HZ), bogosum/(5000/HZ) % 100); -#endif /* CONFIG_SMP && CONFIG_PPC32 */ - seq_printf(m, "timebase\t: %lu\n", ppc_tb_freq); - if (ppc_md.name) - seq_printf(m, "platform\t: %s\n", ppc_md.name); - root = of_find_node_by_path("/"); - if (root) - model = of_get_property(root, "model", NULL); - if (model) - seq_printf(m, "model\t\t: %s\n", model); - of_node_put(root); - - if (ppc_md.show_cpuinfo != NULL) - ppc_md.show_cpuinfo(m); - -#ifdef CONFIG_PPC32 - /* Display the amount of memory */ - seq_printf(m, "Memory\t\t: %d MB\n", - (unsigned int)(total_memory / (1024 * 1024))); -#endif -} - -static int show_cpuinfo(struct seq_file *m, void *v) -{ - unsigned long cpu_id = (unsigned long)v - 1; - unsigned int pvr; - unsigned short maj; - unsigned short min; - - /* We only show online cpus: disable preempt (overzealous, I - * knew) to prevent cpu going down. */ - preempt_disable(); - if (!cpu_online(cpu_id)) { - preempt_enable(); - return 0; - } - -#ifdef CONFIG_SMP - pvr = per_cpu(cpu_pvr, cpu_id); -#else - pvr = mfspr(SPRN_PVR); -#endif - maj = (pvr >> 8) & 0xFF; - min = pvr & 0xFF; - - seq_printf(m, "processor\t: %lu\n", cpu_id); - seq_printf(m, "cpu\t\t: "); - - if (cur_cpu_spec->pvr_mask) - seq_printf(m, "%s", cur_cpu_spec->cpu_name); - else - seq_printf(m, "unknown (%08x)", pvr); - -#ifdef CONFIG_ALTIVEC - if (cpu_has_feature(CPU_FTR_ALTIVEC)) - seq_printf(m, ", altivec supported"); -#endif /* CONFIG_ALTIVEC */ - - seq_printf(m, "\n"); - -#ifdef CONFIG_TAU - if (cur_cpu_spec->cpu_features & CPU_FTR_TAU) { -#ifdef CONFIG_TAU_AVERAGE - /* more straightforward, but potentially misleading */ - seq_printf(m, "temperature \t: %u C (uncalibrated)\n", - cpu_temp(cpu_id)); -#else - /* show the actual temp sensor range */ - u32 temp; - temp = cpu_temp_both(cpu_id); - seq_printf(m, "temperature \t: %u-%u C (uncalibrated)\n", - temp & 0xff, temp >> 16); -#endif - } -#endif /* CONFIG_TAU */ - - /* - * Assume here that all clock rates are the same in a - * smp system. -- Cort - */ - if (ppc_proc_freq) - seq_printf(m, "clock\t\t: %lu.%06luMHz\n", - ppc_proc_freq / 1000000, ppc_proc_freq % 1000000); - - if (ppc_md.show_percpuinfo != NULL) - ppc_md.show_percpuinfo(m, cpu_id); - - /* If we are a Freescale core do a simple check so - * we dont have to keep adding cases in the future */ - if (PVR_VER(pvr) & 0x8000) { - switch (PVR_VER(pvr)) { - case 0x8000: /* 7441/7450/7451, Voyager */ - case 0x8001: /* 7445/7455, Apollo 6 */ - case 0x8002: /* 7447/7457, Apollo 7 */ - case 0x8003: /* 7447A, Apollo 7 PM */ - case 0x8004: /* 7448, Apollo 8 */ - case 0x800c: /* 7410, Nitro */ - maj = ((pvr >> 8) & 0xF); - min = PVR_MIN(pvr); - break; - default: /* e500/book-e */ - maj = PVR_MAJ(pvr); - min = PVR_MIN(pvr); - break; - } - } else { - switch (PVR_VER(pvr)) { - case 0x0020: /* 403 family */ - maj = PVR_MAJ(pvr) + 1; - min = PVR_MIN(pvr); - break; - case 0x1008: /* 740P/750P ?? */ - maj = ((pvr >> 8) & 0xFF) - 1; - min = pvr & 0xFF; - break; - default: - maj = (pvr >> 8) & 0xFF; - min = pvr & 0xFF; - break; - } - } - - seq_printf(m, "revision\t: %hd.%hd (pvr %04x %04x)\n", - maj, min, PVR_VER(pvr), PVR_REV(pvr)); - -#ifdef CONFIG_PPC32 - seq_printf(m, "bogomips\t: %lu.%02lu\n", - loops_per_jiffy / (500000/HZ), - (loops_per_jiffy / (5000/HZ)) % 100); -#endif - -#ifdef CONFIG_SMP - seq_printf(m, "\n"); -#endif - - preempt_enable(); - - /* If this is the last cpu, print the summary */ - if (cpumask_next(cpu_id, cpu_online_mask) >= nr_cpu_ids) - show_cpuinfo_summary(m); - - return 0; -} - -static void *c_start(struct seq_file *m, loff_t *pos) -{ - if (*pos == 0) /* just in case, cpu 0 is not the first */ - *pos = cpumask_first(cpu_online_mask); - else - *pos = cpumask_next(*pos - 1, cpu_online_mask); - if ((*pos) < nr_cpu_ids) - return (void *)(unsigned long)(*pos + 1); - return 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, -}; - -void __init check_for_initrd(void) -{ -#ifdef CONFIG_BLK_DEV_INITRD - DBG(" -> check_for_initrd() initrd_start=0x%lx initrd_end=0x%lx\n", - initrd_start, initrd_end); - - /* If we were passed an initrd, set the ROOT_DEV properly if the values - * look sensible. If not, clear initrd reference. - */ - if (is_kernel_addr(initrd_start) && is_kernel_addr(initrd_end) && - initrd_end > initrd_start) - ROOT_DEV = Root_RAM0; - else - initrd_start = initrd_end = 0; - - if (initrd_start) - printk("Found initrd at 0x%lx:0x%lx\n", initrd_start, initrd_end); - - DBG(" <- check_for_initrd()\n"); -#endif /* CONFIG_BLK_DEV_INITRD */ -} - -#ifdef CONFIG_SMP - -int threads_per_core, threads_shift; -cpumask_t threads_core_mask; -EXPORT_SYMBOL_GPL(threads_per_core); -EXPORT_SYMBOL_GPL(threads_shift); -EXPORT_SYMBOL_GPL(threads_core_mask); - -static void __init cpu_init_thread_core_maps(int tpc) -{ - int i; - - threads_per_core = tpc; - cpumask_clear(&threads_core_mask); - - /* This implementation only supports power of 2 number of threads - * for simplicity and performance - */ - threads_shift = ilog2(tpc); - BUG_ON(tpc != (1 << threads_shift)); - - for (i = 0; i < tpc; i++) - cpumask_set_cpu(i, &threads_core_mask); - - printk(KERN_INFO "CPU maps initialized for %d thread%s per core\n", - tpc, tpc > 1 ? "s" : ""); - printk(KERN_DEBUG " (thread shift is %d)\n", threads_shift); -} - - -/** - * setup_cpu_maps - initialize the following cpu maps: - * cpu_possible_mask - * cpu_present_mask - * - * Having the possible map set up early allows us to restrict allocations - * of things like irqstacks to nr_cpu_ids rather than NR_CPUS. - * - * We do not initialize the online map here; cpus set their own bits in - * cpu_online_mask as they come up. - * - * This function is valid only for Open Firmware systems. finish_device_tree - * must be called before using this. - * - * While we're here, we may as well set the "physical" cpu ids in the paca. - * - * NOTE: This must match the parsing done in early_init_dt_scan_cpus. - */ -void __init smp_setup_cpu_maps(void) -{ - struct device_node *dn = NULL; - int cpu = 0; - int nthreads = 1; - - DBG("smp_setup_cpu_maps()\n"); - - while ((dn = of_find_node_by_type(dn, "cpu")) && cpu < nr_cpu_ids) { - const int *intserv; - int j, len; - - DBG(" * %s...\n", dn->full_name); - - intserv = of_get_property(dn, "ibm,ppc-interrupt-server#s", - &len); - if (intserv) { - nthreads = len / sizeof(int); - DBG(" ibm,ppc-interrupt-server#s -> %d threads\n", - nthreads); - } else { - DBG(" no ibm,ppc-interrupt-server#s -> 1 thread\n"); - intserv = of_get_property(dn, "reg", NULL); - if (!intserv) - intserv = &cpu; /* assume logical == phys */ - } - - for (j = 0; j < nthreads && cpu < nr_cpu_ids; j++) { - DBG(" thread %d -> cpu %d (hard id %d)\n", - j, cpu, intserv[j]); - set_cpu_present(cpu, true); - set_hard_smp_processor_id(cpu, intserv[j]); - set_cpu_possible(cpu, true); - cpu++; - } - } - - /* If no SMT supported, nthreads is forced to 1 */ - if (!cpu_has_feature(CPU_FTR_SMT)) { - DBG(" SMT disabled ! nthreads forced to 1\n"); - nthreads = 1; - } - -#ifdef CONFIG_PPC64 - /* - * On pSeries LPAR, we need to know how many cpus - * could possibly be added to this partition. - */ - if (machine_is(pseries) && firmware_has_feature(FW_FEATURE_LPAR) && - (dn = of_find_node_by_path("/rtas"))) { - int num_addr_cell, num_size_cell, maxcpus; - const unsigned int *ireg; - - num_addr_cell = of_n_addr_cells(dn); - num_size_cell = of_n_size_cells(dn); - - ireg = of_get_property(dn, "ibm,lrdr-capacity", NULL); - - if (!ireg) - goto out; - - maxcpus = ireg[num_addr_cell + num_size_cell]; - - /* Double maxcpus for processors which have SMT capability */ - if (cpu_has_feature(CPU_FTR_SMT)) - maxcpus *= nthreads; - - if (maxcpus > nr_cpu_ids) { - printk(KERN_WARNING - "Partition configured for %d cpus, " - "operating system maximum is %d.\n", - maxcpus, nr_cpu_ids); - maxcpus = nr_cpu_ids; - } else - printk(KERN_INFO "Partition configured for %d cpus.\n", - maxcpus); - - for (cpu = 0; cpu < maxcpus; cpu++) - set_cpu_possible(cpu, true); - out: - of_node_put(dn); - } - vdso_data->processorCount = num_present_cpus(); -#endif /* CONFIG_PPC64 */ - - /* Initialize CPU <=> thread mapping/ - * - * WARNING: We assume that the number of threads is the same for - * every CPU in the system. If that is not the case, then some code - * here will have to be reworked - */ - cpu_init_thread_core_maps(nthreads); - - /* Now that possible cpus are set, set nr_cpu_ids for later use */ - setup_nr_cpu_ids(); - - free_unused_pacas(); -} -#endif /* CONFIG_SMP */ - -#ifdef CONFIG_PCSPKR_PLATFORM -static __init int add_pcspkr(void) -{ - struct device_node *np; - struct platform_device *pd; - int ret; - - np = of_find_compatible_node(NULL, NULL, "pnpPNP,100"); - of_node_put(np); - if (!np) - return -ENODEV; - - pd = platform_device_alloc("pcspkr", -1); - if (!pd) - return -ENOMEM; - - ret = platform_device_add(pd); - if (ret) - platform_device_put(pd); - - return ret; -} -device_initcall(add_pcspkr); -#endif /* CONFIG_PCSPKR_PLATFORM */ - -void probe_machine(void) -{ - extern struct machdep_calls __machine_desc_start; - extern struct machdep_calls __machine_desc_end; - - /* - * Iterate all ppc_md structures until we find the proper - * one for the current machine type - */ - DBG("Probing machine type ...\n"); - - for (machine_id = &__machine_desc_start; - machine_id < &__machine_desc_end; - machine_id++) { - DBG(" %s ...", machine_id->name); - memcpy(&ppc_md, machine_id, sizeof(struct machdep_calls)); - if (ppc_md.probe()) { - DBG(" match !\n"); - break; - } - DBG("\n"); - } - /* What can we do if we didn't find ? */ - if (machine_id >= &__machine_desc_end) { - DBG("No suitable machine found !\n"); - for (;;); - } - - printk(KERN_INFO "Using %s machine description\n", ppc_md.name); -} - -/* Match a class of boards, not a specific device configuration. */ -int check_legacy_ioport(unsigned long base_port) -{ - struct device_node *parent, *np = NULL; - int ret = -ENODEV; - - switch(base_port) { - case I8042_DATA_REG: - if (!(np = of_find_compatible_node(NULL, NULL, "pnpPNP,303"))) - np = of_find_compatible_node(NULL, NULL, "pnpPNP,f03"); - if (np) { - parent = of_get_parent(np); - - of_i8042_kbd_irq = irq_of_parse_and_map(parent, 0); - if (!of_i8042_kbd_irq) - of_i8042_kbd_irq = 1; - - of_i8042_aux_irq = irq_of_parse_and_map(parent, 1); - if (!of_i8042_aux_irq) - of_i8042_aux_irq = 12; - - of_node_put(np); - np = parent; - break; - } - np = of_find_node_by_type(NULL, "8042"); - /* Pegasos has no device_type on its 8042 node, look for the - * name instead */ - if (!np) - np = of_find_node_by_name(NULL, "8042"); - if (np) { - of_i8042_kbd_irq = 1; - of_i8042_aux_irq = 12; - } - break; - case FDC_BASE: /* FDC1 */ - np = of_find_node_by_type(NULL, "fdc"); - break; -#ifdef CONFIG_PPC_PREP - case _PIDXR: - case _PNPWRP: - case PNPBIOS_BASE: - /* implement me */ -#endif - default: - /* ipmi is supposed to fail here */ - break; - } - if (!np) - return ret; - parent = of_get_parent(np); - if (parent) { - if (strcmp(parent->type, "isa") == 0) - ret = 0; - of_node_put(parent); - } - of_node_put(np); - return ret; -} -EXPORT_SYMBOL(check_legacy_ioport); - -static int ppc_panic_event(struct notifier_block *this, - unsigned long event, void *ptr) -{ - /* - * If firmware-assisted dump has been registered then trigger - * firmware-assisted dump and let firmware handle everything else. - */ - crash_fadump(NULL, ptr); - ppc_md.panic(ptr); /* May not return */ - return NOTIFY_DONE; -} - -static struct notifier_block ppc_panic_block = { - .notifier_call = ppc_panic_event, - .priority = INT_MIN /* may not return; must be done last */ -}; - -void __init setup_panic(void) -{ - atomic_notifier_chain_register(&panic_notifier_list, &ppc_panic_block); -} - -#ifdef CONFIG_CHECK_CACHE_COHERENCY -/* - * For platforms that have configurable cache-coherency. This function - * checks that the cache coherency setting of the kernel matches the setting - * left by the firmware, as indicated in the device tree. Since a mismatch - * will eventually result in DMA failures, we print * and error and call - * BUG() in that case. - */ - -#ifdef CONFIG_NOT_COHERENT_CACHE -#define KERNEL_COHERENCY 0 -#else -#define KERNEL_COHERENCY 1 -#endif - -static int __init check_cache_coherency(void) -{ - struct device_node *np; - const void *prop; - int devtree_coherency; - - np = of_find_node_by_path("/"); - prop = of_get_property(np, "coherency-off", NULL); - of_node_put(np); - - devtree_coherency = prop ? 0 : 1; - - if (devtree_coherency != KERNEL_COHERENCY) { - printk(KERN_ERR - "kernel coherency:%s != device tree_coherency:%s\n", - KERNEL_COHERENCY ? "on" : "off", - devtree_coherency ? "on" : "off"); - BUG(); - } - - return 0; -} - -late_initcall(check_cache_coherency); -#endif /* CONFIG_CHECK_CACHE_COHERENCY */ - -#ifdef CONFIG_DEBUG_FS -struct dentry *powerpc_debugfs_root; -EXPORT_SYMBOL(powerpc_debugfs_root); - -static int powerpc_debugfs_init(void) -{ - powerpc_debugfs_root = debugfs_create_dir("powerpc", NULL); - - return powerpc_debugfs_root == NULL; -} -arch_initcall(powerpc_debugfs_init); -#endif - -void ppc_printk_progress(char *s, unsigned short hex) -{ - pr_info("%s\n", s); -} - -void arch_setup_pdev_archdata(struct platform_device *pdev) -{ - pdev->archdata.dma_mask = DMA_BIT_MASK(32); - pdev->dev.dma_mask = &pdev->archdata.dma_mask; - set_dma_ops(&pdev->dev, &dma_direct_ops); -} |