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1473 lines
37 KiB
1473 lines
37 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* linux/arch/alpha/kernel/setup.c |
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* |
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* Copyright (C) 1995 Linus Torvalds |
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*/ |
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|
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/* 2.3.x bootmem, 1999 Andrea Arcangeli <[email protected]> */ |
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|
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/* |
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* Bootup setup stuff. |
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*/ |
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|
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#include <linux/sched.h> |
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#include <linux/kernel.h> |
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#include <linux/mm.h> |
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#include <linux/stddef.h> |
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#include <linux/unistd.h> |
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#include <linux/ptrace.h> |
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#include <linux/slab.h> |
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#include <linux/user.h> |
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#include <linux/screen_info.h> |
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#include <linux/delay.h> |
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#include <linux/mc146818rtc.h> |
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#include <linux/console.h> |
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#include <linux/cpu.h> |
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#include <linux/errno.h> |
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#include <linux/init.h> |
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#include <linux/string.h> |
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#include <linux/ioport.h> |
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#include <linux/platform_device.h> |
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#include <linux/memblock.h> |
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#include <linux/pci.h> |
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#include <linux/seq_file.h> |
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#include <linux/root_dev.h> |
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#include <linux/initrd.h> |
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#include <linux/eisa.h> |
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#include <linux/pfn.h> |
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#ifdef CONFIG_MAGIC_SYSRQ |
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#include <linux/sysrq.h> |
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#include <linux/reboot.h> |
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#endif |
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#include <linux/notifier.h> |
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#include <asm/setup.h> |
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#include <asm/io.h> |
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#include <linux/log2.h> |
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#include <linux/export.h> |
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|
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extern struct atomic_notifier_head panic_notifier_list; |
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static int alpha_panic_event(struct notifier_block *, unsigned long, void *); |
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static struct notifier_block alpha_panic_block = { |
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alpha_panic_event, |
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NULL, |
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INT_MAX /* try to do it first */ |
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}; |
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#include <linux/uaccess.h> |
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#include <asm/hwrpb.h> |
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#include <asm/dma.h> |
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#include <asm/mmu_context.h> |
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#include <asm/console.h> |
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#include "proto.h" |
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#include "pci_impl.h" |
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struct hwrpb_struct *hwrpb; |
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EXPORT_SYMBOL(hwrpb); |
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unsigned long srm_hae; |
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int alpha_l1i_cacheshape; |
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int alpha_l1d_cacheshape; |
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int alpha_l2_cacheshape; |
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int alpha_l3_cacheshape; |
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#ifdef CONFIG_VERBOSE_MCHECK |
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/* 0=minimum, 1=verbose, 2=all */ |
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/* These can be overridden via the command line, ie "verbose_mcheck=2") */ |
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unsigned long alpha_verbose_mcheck = CONFIG_VERBOSE_MCHECK_ON; |
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#endif |
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#ifdef CONFIG_NUMA |
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struct cpumask node_to_cpumask_map[MAX_NUMNODES] __read_mostly; |
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EXPORT_SYMBOL(node_to_cpumask_map); |
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#endif |
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/* Which processor we booted from. */ |
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int boot_cpuid; |
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/* |
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* Using SRM callbacks for initial console output. This works from |
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* setup_arch() time through the end of time_init(), as those places |
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* are under our (Alpha) control. |
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|
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* "srmcons" specified in the boot command arguments allows us to |
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* see kernel messages during the period of time before the true |
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* console device is "registered" during console_init(). |
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* As of this version (2.5.59), console_init() will call |
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* disable_early_printk() as the last action before initializing |
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* the console drivers. That's the last possible time srmcons can be |
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* unregistered without interfering with console behavior. |
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* |
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* By default, OFF; set it with a bootcommand arg of "srmcons" or |
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* "console=srm". The meaning of these two args is: |
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* "srmcons" - early callback prints |
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* "console=srm" - full callback based console, including early prints |
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*/ |
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int srmcons_output = 0; |
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|
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/* Enforce a memory size limit; useful for testing. By default, none. */ |
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unsigned long mem_size_limit = 0; |
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|
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/* Set AGP GART window size (0 means disabled). */ |
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unsigned long alpha_agpgart_size = DEFAULT_AGP_APER_SIZE; |
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#ifdef CONFIG_ALPHA_GENERIC |
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struct alpha_machine_vector alpha_mv; |
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EXPORT_SYMBOL(alpha_mv); |
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#endif |
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#ifndef alpha_using_srm |
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int alpha_using_srm; |
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EXPORT_SYMBOL(alpha_using_srm); |
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#endif |
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#ifndef alpha_using_qemu |
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int alpha_using_qemu; |
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#endif |
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static struct alpha_machine_vector *get_sysvec(unsigned long, unsigned long, |
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unsigned long); |
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static struct alpha_machine_vector *get_sysvec_byname(const char *); |
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static void get_sysnames(unsigned long, unsigned long, unsigned long, |
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char **, char **); |
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static void determine_cpu_caches (unsigned int); |
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static char __initdata command_line[COMMAND_LINE_SIZE]; |
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/* |
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* The format of "screen_info" is strange, and due to early |
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* i386-setup code. This is just enough to make the console |
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* code think we're on a VGA color display. |
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*/ |
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struct screen_info screen_info = { |
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.orig_x = 0, |
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.orig_y = 25, |
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.orig_video_cols = 80, |
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.orig_video_lines = 25, |
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.orig_video_isVGA = 1, |
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.orig_video_points = 16 |
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}; |
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EXPORT_SYMBOL(screen_info); |
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/* |
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* The direct map I/O window, if any. This should be the same |
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* for all busses, since it's used by virt_to_bus. |
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*/ |
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unsigned long __direct_map_base; |
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unsigned long __direct_map_size; |
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EXPORT_SYMBOL(__direct_map_base); |
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EXPORT_SYMBOL(__direct_map_size); |
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/* |
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* Declare all of the machine vectors. |
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*/ |
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/* GCC 2.7.2 (on alpha at least) is lame. It does not support either |
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__attribute__((weak)) or #pragma weak. Bypass it and talk directly |
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to the assembler. */ |
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#define WEAK(X) \ |
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extern struct alpha_machine_vector X; \ |
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asm(".weak "#X) |
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WEAK(alcor_mv); |
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WEAK(alphabook1_mv); |
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WEAK(avanti_mv); |
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WEAK(cabriolet_mv); |
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WEAK(clipper_mv); |
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WEAK(dp264_mv); |
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WEAK(eb164_mv); |
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WEAK(eb64p_mv); |
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WEAK(eb66_mv); |
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WEAK(eb66p_mv); |
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WEAK(eiger_mv); |
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WEAK(jensen_mv); |
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WEAK(lx164_mv); |
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WEAK(lynx_mv); |
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WEAK(marvel_ev7_mv); |
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WEAK(miata_mv); |
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WEAK(mikasa_mv); |
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WEAK(mikasa_primo_mv); |
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WEAK(monet_mv); |
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WEAK(nautilus_mv); |
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WEAK(noname_mv); |
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WEAK(noritake_mv); |
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WEAK(noritake_primo_mv); |
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WEAK(p2k_mv); |
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WEAK(pc164_mv); |
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WEAK(privateer_mv); |
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WEAK(rawhide_mv); |
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WEAK(ruffian_mv); |
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WEAK(rx164_mv); |
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WEAK(sable_mv); |
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WEAK(sable_gamma_mv); |
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WEAK(shark_mv); |
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WEAK(sx164_mv); |
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WEAK(takara_mv); |
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WEAK(titan_mv); |
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WEAK(webbrick_mv); |
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WEAK(wildfire_mv); |
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WEAK(xl_mv); |
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WEAK(xlt_mv); |
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#undef WEAK |
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/* |
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* I/O resources inherited from PeeCees. Except for perhaps the |
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* turbochannel alphas, everyone has these on some sort of SuperIO chip. |
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* |
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* ??? If this becomes less standard, move the struct out into the |
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* machine vector. |
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*/ |
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static void __init |
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reserve_std_resources(void) |
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{ |
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static struct resource standard_io_resources[] = { |
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{ .name = "rtc", .start = -1, .end = -1 }, |
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{ .name = "dma1", .start = 0x00, .end = 0x1f }, |
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{ .name = "pic1", .start = 0x20, .end = 0x3f }, |
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{ .name = "timer", .start = 0x40, .end = 0x5f }, |
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{ .name = "keyboard", .start = 0x60, .end = 0x6f }, |
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{ .name = "dma page reg", .start = 0x80, .end = 0x8f }, |
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{ .name = "pic2", .start = 0xa0, .end = 0xbf }, |
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{ .name = "dma2", .start = 0xc0, .end = 0xdf }, |
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}; |
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struct resource *io = &ioport_resource; |
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size_t i; |
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|
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if (hose_head) { |
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struct pci_controller *hose; |
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for (hose = hose_head; hose; hose = hose->next) |
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if (hose->index == 0) { |
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io = hose->io_space; |
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break; |
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} |
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} |
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/* Fix up for the Jensen's queer RTC placement. */ |
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standard_io_resources[0].start = RTC_PORT(0); |
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standard_io_resources[0].end = RTC_PORT(0) + 0x0f; |
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for (i = 0; i < ARRAY_SIZE(standard_io_resources); ++i) |
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request_resource(io, standard_io_resources+i); |
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} |
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#define PFN_MAX PFN_DOWN(0x80000000) |
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#define for_each_mem_cluster(memdesc, _cluster, i) \ |
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for ((_cluster) = (memdesc)->cluster, (i) = 0; \ |
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(i) < (memdesc)->numclusters; (i)++, (_cluster)++) |
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static unsigned long __init |
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get_mem_size_limit(char *s) |
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{ |
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unsigned long end = 0; |
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char *from = s; |
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end = simple_strtoul(from, &from, 0); |
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if ( *from == 'K' || *from == 'k' ) { |
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end = end << 10; |
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from++; |
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} else if ( *from == 'M' || *from == 'm' ) { |
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end = end << 20; |
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from++; |
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} else if ( *from == 'G' || *from == 'g' ) { |
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end = end << 30; |
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from++; |
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} |
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return end >> PAGE_SHIFT; /* Return the PFN of the limit. */ |
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} |
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#ifdef CONFIG_BLK_DEV_INITRD |
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void * __init |
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move_initrd(unsigned long mem_limit) |
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{ |
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void *start; |
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unsigned long size; |
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size = initrd_end - initrd_start; |
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start = memblock_alloc(PAGE_ALIGN(size), PAGE_SIZE); |
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if (!start || __pa(start) + size > mem_limit) { |
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initrd_start = initrd_end = 0; |
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return NULL; |
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} |
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memmove(start, (void *)initrd_start, size); |
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initrd_start = (unsigned long)start; |
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initrd_end = initrd_start + size; |
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printk("initrd moved to %p\n", start); |
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return start; |
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} |
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#endif |
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#ifndef CONFIG_DISCONTIGMEM |
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static void __init |
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setup_memory(void *kernel_end) |
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{ |
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struct memclust_struct * cluster; |
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struct memdesc_struct * memdesc; |
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unsigned long kernel_size; |
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unsigned long i; |
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/* Find free clusters, and init and free the bootmem accordingly. */ |
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memdesc = (struct memdesc_struct *) |
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(hwrpb->mddt_offset + (unsigned long) hwrpb); |
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for_each_mem_cluster(memdesc, cluster, i) { |
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unsigned long end; |
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printk("memcluster %lu, usage %01lx, start %8lu, end %8lu\n", |
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i, cluster->usage, cluster->start_pfn, |
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cluster->start_pfn + cluster->numpages); |
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/* Bit 0 is console/PALcode reserved. Bit 1 is |
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non-volatile memory -- we might want to mark |
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this for later. */ |
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if (cluster->usage & 3) |
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continue; |
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end = cluster->start_pfn + cluster->numpages; |
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if (end > max_low_pfn) |
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max_low_pfn = end; |
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memblock_add(PFN_PHYS(cluster->start_pfn), |
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cluster->numpages << PAGE_SHIFT); |
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} |
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/* |
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* Except for the NUMA systems (wildfire, marvel) all of the |
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* Alpha systems we run on support 32GB of memory or less. |
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* Since the NUMA systems introduce large holes in memory addressing, |
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* we can get into a situation where there is not enough contiguous |
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* memory for the memory map. |
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* |
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* Limit memory to the first 32GB to limit the NUMA systems to |
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* memory on their first node (wildfire) or 2 (marvel) to avoid |
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* not being able to produce the memory map. In order to access |
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* all of the memory on the NUMA systems, build with discontiguous |
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* memory support. |
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* |
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* If the user specified a memory limit, let that memory limit stand. |
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*/ |
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if (!mem_size_limit) |
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mem_size_limit = (32ul * 1024 * 1024 * 1024) >> PAGE_SHIFT; |
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if (mem_size_limit && max_low_pfn >= mem_size_limit) |
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{ |
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printk("setup: forcing memory size to %ldK (from %ldK).\n", |
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mem_size_limit << (PAGE_SHIFT - 10), |
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max_low_pfn << (PAGE_SHIFT - 10)); |
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max_low_pfn = mem_size_limit; |
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} |
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/* Reserve the kernel memory. */ |
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kernel_size = virt_to_phys(kernel_end) - KERNEL_START_PHYS; |
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memblock_reserve(KERNEL_START_PHYS, kernel_size); |
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#ifdef CONFIG_BLK_DEV_INITRD |
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initrd_start = INITRD_START; |
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if (initrd_start) { |
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initrd_end = initrd_start+INITRD_SIZE; |
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printk("Initial ramdisk at: 0x%p (%lu bytes)\n", |
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(void *) initrd_start, INITRD_SIZE); |
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if ((void *)initrd_end > phys_to_virt(PFN_PHYS(max_low_pfn))) { |
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if (!move_initrd(PFN_PHYS(max_low_pfn))) |
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printk("initrd extends beyond end of memory " |
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"(0x%08lx > 0x%p)\ndisabling initrd\n", |
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initrd_end, |
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phys_to_virt(PFN_PHYS(max_low_pfn))); |
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} else { |
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memblock_reserve(virt_to_phys((void *)initrd_start), |
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INITRD_SIZE); |
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} |
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} |
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#endif /* CONFIG_BLK_DEV_INITRD */ |
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} |
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#else |
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extern void setup_memory(void *); |
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#endif /* !CONFIG_DISCONTIGMEM */ |
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int __init |
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page_is_ram(unsigned long pfn) |
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{ |
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struct memclust_struct * cluster; |
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struct memdesc_struct * memdesc; |
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unsigned long i; |
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memdesc = (struct memdesc_struct *) |
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(hwrpb->mddt_offset + (unsigned long) hwrpb); |
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for_each_mem_cluster(memdesc, cluster, i) |
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{ |
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if (pfn >= cluster->start_pfn && |
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pfn < cluster->start_pfn + cluster->numpages) { |
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return (cluster->usage & 3) ? 0 : 1; |
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} |
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} |
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return 0; |
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} |
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static int __init |
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register_cpus(void) |
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{ |
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int i; |
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|
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for_each_possible_cpu(i) { |
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struct cpu *p = kzalloc(sizeof(*p), GFP_KERNEL); |
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if (!p) |
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return -ENOMEM; |
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register_cpu(p, i); |
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} |
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return 0; |
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} |
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arch_initcall(register_cpus); |
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|
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#ifdef CONFIG_MAGIC_SYSRQ |
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static void sysrq_reboot_handler(int unused) |
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{ |
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machine_halt(); |
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} |
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static const struct sysrq_key_op srm_sysrq_reboot_op = { |
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.handler = sysrq_reboot_handler, |
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.help_msg = "reboot(b)", |
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.action_msg = "Resetting", |
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.enable_mask = SYSRQ_ENABLE_BOOT, |
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}; |
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#endif |
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|
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void __init |
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setup_arch(char **cmdline_p) |
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{ |
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extern char _end[]; |
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|
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struct alpha_machine_vector *vec = NULL; |
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struct percpu_struct *cpu; |
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char *type_name, *var_name, *p; |
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void *kernel_end = _end; /* end of kernel */ |
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char *args = command_line; |
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|
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hwrpb = (struct hwrpb_struct*) __va(INIT_HWRPB->phys_addr); |
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boot_cpuid = hard_smp_processor_id(); |
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|
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/* |
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* Pre-process the system type to make sure it will be valid. |
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* |
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* This may restore real CABRIO and EB66+ family names, ie |
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* EB64+ and EB66. |
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* |
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* Oh, and "white box" AS800 (aka DIGITAL Server 3000 series) |
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* and AS1200 (DIGITAL Server 5000 series) have the type as |
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* the negative of the real one. |
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*/ |
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if ((long)hwrpb->sys_type < 0) { |
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hwrpb->sys_type = -((long)hwrpb->sys_type); |
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hwrpb_update_checksum(hwrpb); |
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} |
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|
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/* Register a call for panic conditions. */ |
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atomic_notifier_chain_register(&panic_notifier_list, |
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&alpha_panic_block); |
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|
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#ifndef alpha_using_srm |
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/* Assume that we've booted from SRM if we haven't booted from MILO. |
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Detect the later by looking for "MILO" in the system serial nr. */ |
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alpha_using_srm = !str_has_prefix((const char *)hwrpb->ssn, "MILO"); |
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#endif |
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#ifndef alpha_using_qemu |
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/* Similarly, look for QEMU. */ |
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alpha_using_qemu = strstr((const char *)hwrpb->ssn, "QEMU") != 0; |
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#endif |
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|
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/* If we are using SRM, we want to allow callbacks |
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as early as possible, so do this NOW, and then |
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they should work immediately thereafter. |
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*/ |
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kernel_end = callback_init(kernel_end); |
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|
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/* |
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* Locate the command line. |
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*/ |
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/* Hack for Jensen... since we're restricted to 8 or 16 chars for |
|
boot flags depending on the boot mode, we need some shorthand. |
|
This should do for installation. */ |
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if (strcmp(COMMAND_LINE, "INSTALL") == 0) { |
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strlcpy(command_line, "root=/dev/fd0 load_ramdisk=1", sizeof command_line); |
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} else { |
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strlcpy(command_line, COMMAND_LINE, sizeof command_line); |
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} |
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strcpy(boot_command_line, command_line); |
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*cmdline_p = command_line; |
|
|
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/* |
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* Process command-line arguments. |
|
*/ |
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while ((p = strsep(&args, " \t")) != NULL) { |
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if (!*p) continue; |
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if (strncmp(p, "alpha_mv=", 9) == 0) { |
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vec = get_sysvec_byname(p+9); |
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continue; |
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} |
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if (strncmp(p, "cycle=", 6) == 0) { |
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est_cycle_freq = simple_strtol(p+6, NULL, 0); |
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continue; |
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} |
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if (strncmp(p, "mem=", 4) == 0) { |
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mem_size_limit = get_mem_size_limit(p+4); |
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continue; |
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} |
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if (strncmp(p, "srmcons", 7) == 0) { |
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srmcons_output |= 1; |
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continue; |
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} |
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if (strncmp(p, "console=srm", 11) == 0) { |
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srmcons_output |= 2; |
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continue; |
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} |
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if (strncmp(p, "gartsize=", 9) == 0) { |
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alpha_agpgart_size = |
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get_mem_size_limit(p+9) << PAGE_SHIFT; |
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continue; |
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} |
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#ifdef CONFIG_VERBOSE_MCHECK |
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if (strncmp(p, "verbose_mcheck=", 15) == 0) { |
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alpha_verbose_mcheck = simple_strtol(p+15, NULL, 0); |
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continue; |
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} |
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#endif |
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} |
|
|
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/* Replace the command line, now that we've killed it with strsep. */ |
|
strcpy(command_line, boot_command_line); |
|
|
|
/* If we want SRM console printk echoing early, do it now. */ |
|
if (alpha_using_srm && srmcons_output) { |
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register_srm_console(); |
|
|
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/* |
|
* If "console=srm" was specified, clear the srmcons_output |
|
* flag now so that time.c won't unregister_srm_console |
|
*/ |
|
if (srmcons_output & 2) |
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srmcons_output = 0; |
|
} |
|
|
|
#ifdef CONFIG_MAGIC_SYSRQ |
|
/* If we're using SRM, make sysrq-b halt back to the prom, |
|
not auto-reboot. */ |
|
if (alpha_using_srm) { |
|
unregister_sysrq_key('b', __sysrq_reboot_op); |
|
register_sysrq_key('b', &srm_sysrq_reboot_op); |
|
} |
|
#endif |
|
|
|
/* |
|
* Identify and reconfigure for the current system. |
|
*/ |
|
cpu = (struct percpu_struct*)((char*)hwrpb + hwrpb->processor_offset); |
|
|
|
get_sysnames(hwrpb->sys_type, hwrpb->sys_variation, |
|
cpu->type, &type_name, &var_name); |
|
if (*var_name == '0') |
|
var_name = ""; |
|
|
|
if (!vec) { |
|
vec = get_sysvec(hwrpb->sys_type, hwrpb->sys_variation, |
|
cpu->type); |
|
} |
|
|
|
if (!vec) { |
|
panic("Unsupported system type: %s%s%s (%ld %ld)\n", |
|
type_name, (*var_name ? " variation " : ""), var_name, |
|
hwrpb->sys_type, hwrpb->sys_variation); |
|
} |
|
if (vec != &alpha_mv) { |
|
alpha_mv = *vec; |
|
} |
|
|
|
printk("Booting " |
|
#ifdef CONFIG_ALPHA_GENERIC |
|
"GENERIC " |
|
#endif |
|
"on %s%s%s using machine vector %s from %s\n", |
|
type_name, (*var_name ? " variation " : ""), |
|
var_name, alpha_mv.vector_name, |
|
(alpha_using_srm ? "SRM" : "MILO")); |
|
|
|
printk("Major Options: " |
|
#ifdef CONFIG_SMP |
|
"SMP " |
|
#endif |
|
#ifdef CONFIG_ALPHA_EV56 |
|
"EV56 " |
|
#endif |
|
#ifdef CONFIG_ALPHA_EV67 |
|
"EV67 " |
|
#endif |
|
#ifdef CONFIG_ALPHA_LEGACY_START_ADDRESS |
|
"LEGACY_START " |
|
#endif |
|
#ifdef CONFIG_VERBOSE_MCHECK |
|
"VERBOSE_MCHECK " |
|
#endif |
|
|
|
#ifdef CONFIG_DISCONTIGMEM |
|
"DISCONTIGMEM " |
|
#ifdef CONFIG_NUMA |
|
"NUMA " |
|
#endif |
|
#endif |
|
|
|
#ifdef CONFIG_DEBUG_SPINLOCK |
|
"DEBUG_SPINLOCK " |
|
#endif |
|
#ifdef CONFIG_MAGIC_SYSRQ |
|
"MAGIC_SYSRQ " |
|
#endif |
|
"\n"); |
|
|
|
printk("Command line: %s\n", command_line); |
|
|
|
/* |
|
* Sync up the HAE. |
|
* Save the SRM's current value for restoration. |
|
*/ |
|
srm_hae = *alpha_mv.hae_register; |
|
__set_hae(alpha_mv.hae_cache); |
|
|
|
/* Reset enable correctable error reports. */ |
|
wrmces(0x7); |
|
|
|
/* Find our memory. */ |
|
setup_memory(kernel_end); |
|
memblock_set_bottom_up(true); |
|
sparse_init(); |
|
|
|
/* First guess at cpu cache sizes. Do this before init_arch. */ |
|
determine_cpu_caches(cpu->type); |
|
|
|
/* Initialize the machine. Usually has to do with setting up |
|
DMA windows and the like. */ |
|
if (alpha_mv.init_arch) |
|
alpha_mv.init_arch(); |
|
|
|
/* Reserve standard resources. */ |
|
reserve_std_resources(); |
|
|
|
/* |
|
* Give us a default console. TGA users will see nothing until |
|
* chr_dev_init is called, rather late in the boot sequence. |
|
*/ |
|
|
|
#ifdef CONFIG_VT |
|
#if defined(CONFIG_VGA_CONSOLE) |
|
conswitchp = &vga_con; |
|
#endif |
|
#endif |
|
|
|
/* Default root filesystem to sda2. */ |
|
ROOT_DEV = Root_SDA2; |
|
|
|
#ifdef CONFIG_EISA |
|
/* FIXME: only set this when we actually have EISA in this box? */ |
|
EISA_bus = 1; |
|
#endif |
|
|
|
/* |
|
* Check ASN in HWRPB for validity, report if bad. |
|
* FIXME: how was this failing? Should we trust it instead, |
|
* and copy the value into alpha_mv.max_asn? |
|
*/ |
|
|
|
if (hwrpb->max_asn != MAX_ASN) { |
|
printk("Max ASN from HWRPB is bad (0x%lx)\n", hwrpb->max_asn); |
|
} |
|
|
|
/* |
|
* Identify the flock of penguins. |
|
*/ |
|
|
|
#ifdef CONFIG_SMP |
|
setup_smp(); |
|
#endif |
|
paging_init(); |
|
} |
|
|
|
static char sys_unknown[] = "Unknown"; |
|
static char systype_names[][16] = { |
|
"0", |
|
"ADU", "Cobra", "Ruby", "Flamingo", "Mannequin", "Jensen", |
|
"Pelican", "Morgan", "Sable", "Medulla", "Noname", |
|
"Turbolaser", "Avanti", "Mustang", "Alcor", "Tradewind", |
|
"Mikasa", "EB64", "EB66", "EB64+", "AlphaBook1", |
|
"Rawhide", "K2", "Lynx", "XL", "EB164", "Noritake", |
|
"Cortex", "29", "Miata", "XXM", "Takara", "Yukon", |
|
"Tsunami", "Wildfire", "CUSCO", "Eiger", "Titan", "Marvel" |
|
}; |
|
|
|
static char unofficial_names[][8] = {"100", "Ruffian"}; |
|
|
|
static char api_names[][16] = {"200", "Nautilus"}; |
|
|
|
static char eb164_names[][8] = {"EB164", "PC164", "LX164", "SX164", "RX164"}; |
|
static int eb164_indices[] = {0,0,0,1,1,1,1,1,2,2,2,2,3,3,3,3,4}; |
|
|
|
static char alcor_names[][16] = {"Alcor", "Maverick", "Bret"}; |
|
static int alcor_indices[] = {0,0,0,1,1,1,0,0,0,0,0,0,2,2,2,2,2,2}; |
|
|
|
static char eb64p_names[][16] = {"EB64+", "Cabriolet", "AlphaPCI64"}; |
|
static int eb64p_indices[] = {0,0,1,2}; |
|
|
|
static char eb66_names[][8] = {"EB66", "EB66+"}; |
|
static int eb66_indices[] = {0,0,1}; |
|
|
|
static char marvel_names[][16] = { |
|
"Marvel/EV7" |
|
}; |
|
static int marvel_indices[] = { 0 }; |
|
|
|
static char rawhide_names[][16] = { |
|
"Dodge", "Wrangler", "Durango", "Tincup", "DaVinci" |
|
}; |
|
static int rawhide_indices[] = {0,0,0,1,1,2,2,3,3,4,4}; |
|
|
|
static char titan_names[][16] = { |
|
"DEFAULT", "Privateer", "Falcon", "Granite" |
|
}; |
|
static int titan_indices[] = {0,1,2,2,3}; |
|
|
|
static char tsunami_names[][16] = { |
|
"0", "DP264", "Warhol", "Windjammer", "Monet", "Clipper", |
|
"Goldrush", "Webbrick", "Catamaran", "Brisbane", "Melbourne", |
|
"Flying Clipper", "Shark" |
|
}; |
|
static int tsunami_indices[] = {0,1,2,3,4,5,6,7,8,9,10,11,12}; |
|
|
|
static struct alpha_machine_vector * __init |
|
get_sysvec(unsigned long type, unsigned long variation, unsigned long cpu) |
|
{ |
|
static struct alpha_machine_vector *systype_vecs[] __initdata = |
|
{ |
|
NULL, /* 0 */ |
|
NULL, /* ADU */ |
|
NULL, /* Cobra */ |
|
NULL, /* Ruby */ |
|
NULL, /* Flamingo */ |
|
NULL, /* Mannequin */ |
|
&jensen_mv, |
|
NULL, /* Pelican */ |
|
NULL, /* Morgan */ |
|
NULL, /* Sable -- see below. */ |
|
NULL, /* Medulla */ |
|
&noname_mv, |
|
NULL, /* Turbolaser */ |
|
&avanti_mv, |
|
NULL, /* Mustang */ |
|
NULL, /* Alcor, Bret, Maverick. HWRPB inaccurate? */ |
|
NULL, /* Tradewind */ |
|
NULL, /* Mikasa -- see below. */ |
|
NULL, /* EB64 */ |
|
NULL, /* EB66 -- see variation. */ |
|
NULL, /* EB64+ -- see variation. */ |
|
&alphabook1_mv, |
|
&rawhide_mv, |
|
NULL, /* K2 */ |
|
&lynx_mv, /* Lynx */ |
|
&xl_mv, |
|
NULL, /* EB164 -- see variation. */ |
|
NULL, /* Noritake -- see below. */ |
|
NULL, /* Cortex */ |
|
NULL, /* 29 */ |
|
&miata_mv, |
|
NULL, /* XXM */ |
|
&takara_mv, |
|
NULL, /* Yukon */ |
|
NULL, /* Tsunami -- see variation. */ |
|
&wildfire_mv, /* Wildfire */ |
|
NULL, /* CUSCO */ |
|
&eiger_mv, /* Eiger */ |
|
NULL, /* Titan */ |
|
NULL, /* Marvel */ |
|
}; |
|
|
|
static struct alpha_machine_vector *unofficial_vecs[] __initdata = |
|
{ |
|
NULL, /* 100 */ |
|
&ruffian_mv, |
|
}; |
|
|
|
static struct alpha_machine_vector *api_vecs[] __initdata = |
|
{ |
|
NULL, /* 200 */ |
|
&nautilus_mv, |
|
}; |
|
|
|
static struct alpha_machine_vector *alcor_vecs[] __initdata = |
|
{ |
|
&alcor_mv, &xlt_mv, &xlt_mv |
|
}; |
|
|
|
static struct alpha_machine_vector *eb164_vecs[] __initdata = |
|
{ |
|
&eb164_mv, &pc164_mv, &lx164_mv, &sx164_mv, &rx164_mv |
|
}; |
|
|
|
static struct alpha_machine_vector *eb64p_vecs[] __initdata = |
|
{ |
|
&eb64p_mv, |
|
&cabriolet_mv, |
|
&cabriolet_mv /* AlphaPCI64 */ |
|
}; |
|
|
|
static struct alpha_machine_vector *eb66_vecs[] __initdata = |
|
{ |
|
&eb66_mv, |
|
&eb66p_mv |
|
}; |
|
|
|
static struct alpha_machine_vector *marvel_vecs[] __initdata = |
|
{ |
|
&marvel_ev7_mv, |
|
}; |
|
|
|
static struct alpha_machine_vector *titan_vecs[] __initdata = |
|
{ |
|
&titan_mv, /* default */ |
|
&privateer_mv, /* privateer */ |
|
&titan_mv, /* falcon */ |
|
&privateer_mv, /* granite */ |
|
}; |
|
|
|
static struct alpha_machine_vector *tsunami_vecs[] __initdata = |
|
{ |
|
NULL, |
|
&dp264_mv, /* dp264 */ |
|
&dp264_mv, /* warhol */ |
|
&dp264_mv, /* windjammer */ |
|
&monet_mv, /* monet */ |
|
&clipper_mv, /* clipper */ |
|
&dp264_mv, /* goldrush */ |
|
&webbrick_mv, /* webbrick */ |
|
&dp264_mv, /* catamaran */ |
|
NULL, /* brisbane? */ |
|
NULL, /* melbourne? */ |
|
NULL, /* flying clipper? */ |
|
&shark_mv, /* shark */ |
|
}; |
|
|
|
/* ??? Do we need to distinguish between Rawhides? */ |
|
|
|
struct alpha_machine_vector *vec; |
|
|
|
/* Search the system tables first... */ |
|
vec = NULL; |
|
if (type < ARRAY_SIZE(systype_vecs)) { |
|
vec = systype_vecs[type]; |
|
} else if ((type > ST_API_BIAS) && |
|
(type - ST_API_BIAS) < ARRAY_SIZE(api_vecs)) { |
|
vec = api_vecs[type - ST_API_BIAS]; |
|
} else if ((type > ST_UNOFFICIAL_BIAS) && |
|
(type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_vecs)) { |
|
vec = unofficial_vecs[type - ST_UNOFFICIAL_BIAS]; |
|
} |
|
|
|
/* If we've not found one, try for a variation. */ |
|
|
|
if (!vec) { |
|
/* Member ID is a bit-field. */ |
|
unsigned long member = (variation >> 10) & 0x3f; |
|
|
|
cpu &= 0xffffffff; /* make it usable */ |
|
|
|
switch (type) { |
|
case ST_DEC_ALCOR: |
|
if (member < ARRAY_SIZE(alcor_indices)) |
|
vec = alcor_vecs[alcor_indices[member]]; |
|
break; |
|
case ST_DEC_EB164: |
|
if (member < ARRAY_SIZE(eb164_indices)) |
|
vec = eb164_vecs[eb164_indices[member]]; |
|
/* PC164 may show as EB164 variation with EV56 CPU, |
|
but, since no true EB164 had anything but EV5... */ |
|
if (vec == &eb164_mv && cpu == EV56_CPU) |
|
vec = &pc164_mv; |
|
break; |
|
case ST_DEC_EB64P: |
|
if (member < ARRAY_SIZE(eb64p_indices)) |
|
vec = eb64p_vecs[eb64p_indices[member]]; |
|
break; |
|
case ST_DEC_EB66: |
|
if (member < ARRAY_SIZE(eb66_indices)) |
|
vec = eb66_vecs[eb66_indices[member]]; |
|
break; |
|
case ST_DEC_MARVEL: |
|
if (member < ARRAY_SIZE(marvel_indices)) |
|
vec = marvel_vecs[marvel_indices[member]]; |
|
break; |
|
case ST_DEC_TITAN: |
|
vec = titan_vecs[0]; /* default */ |
|
if (member < ARRAY_SIZE(titan_indices)) |
|
vec = titan_vecs[titan_indices[member]]; |
|
break; |
|
case ST_DEC_TSUNAMI: |
|
if (member < ARRAY_SIZE(tsunami_indices)) |
|
vec = tsunami_vecs[tsunami_indices[member]]; |
|
break; |
|
case ST_DEC_1000: |
|
if (cpu == EV5_CPU || cpu == EV56_CPU) |
|
vec = &mikasa_primo_mv; |
|
else |
|
vec = &mikasa_mv; |
|
break; |
|
case ST_DEC_NORITAKE: |
|
if (cpu == EV5_CPU || cpu == EV56_CPU) |
|
vec = &noritake_primo_mv; |
|
else |
|
vec = &noritake_mv; |
|
break; |
|
case ST_DEC_2100_A500: |
|
if (cpu == EV5_CPU || cpu == EV56_CPU) |
|
vec = &sable_gamma_mv; |
|
else |
|
vec = &sable_mv; |
|
break; |
|
} |
|
} |
|
return vec; |
|
} |
|
|
|
static struct alpha_machine_vector * __init |
|
get_sysvec_byname(const char *name) |
|
{ |
|
static struct alpha_machine_vector *all_vecs[] __initdata = |
|
{ |
|
&alcor_mv, |
|
&alphabook1_mv, |
|
&avanti_mv, |
|
&cabriolet_mv, |
|
&clipper_mv, |
|
&dp264_mv, |
|
&eb164_mv, |
|
&eb64p_mv, |
|
&eb66_mv, |
|
&eb66p_mv, |
|
&eiger_mv, |
|
&jensen_mv, |
|
&lx164_mv, |
|
&lynx_mv, |
|
&miata_mv, |
|
&mikasa_mv, |
|
&mikasa_primo_mv, |
|
&monet_mv, |
|
&nautilus_mv, |
|
&noname_mv, |
|
&noritake_mv, |
|
&noritake_primo_mv, |
|
&p2k_mv, |
|
&pc164_mv, |
|
&privateer_mv, |
|
&rawhide_mv, |
|
&ruffian_mv, |
|
&rx164_mv, |
|
&sable_mv, |
|
&sable_gamma_mv, |
|
&shark_mv, |
|
&sx164_mv, |
|
&takara_mv, |
|
&webbrick_mv, |
|
&wildfire_mv, |
|
&xl_mv, |
|
&xlt_mv |
|
}; |
|
|
|
size_t i; |
|
|
|
for (i = 0; i < ARRAY_SIZE(all_vecs); ++i) { |
|
struct alpha_machine_vector *mv = all_vecs[i]; |
|
if (strcasecmp(mv->vector_name, name) == 0) |
|
return mv; |
|
} |
|
return NULL; |
|
} |
|
|
|
static void |
|
get_sysnames(unsigned long type, unsigned long variation, unsigned long cpu, |
|
char **type_name, char **variation_name) |
|
{ |
|
unsigned long member; |
|
|
|
/* If not in the tables, make it UNKNOWN, |
|
else set type name to family */ |
|
if (type < ARRAY_SIZE(systype_names)) { |
|
*type_name = systype_names[type]; |
|
} else if ((type > ST_API_BIAS) && |
|
(type - ST_API_BIAS) < ARRAY_SIZE(api_names)) { |
|
*type_name = api_names[type - ST_API_BIAS]; |
|
} else if ((type > ST_UNOFFICIAL_BIAS) && |
|
(type - ST_UNOFFICIAL_BIAS) < ARRAY_SIZE(unofficial_names)) { |
|
*type_name = unofficial_names[type - ST_UNOFFICIAL_BIAS]; |
|
} else { |
|
*type_name = sys_unknown; |
|
*variation_name = sys_unknown; |
|
return; |
|
} |
|
|
|
/* Set variation to "0"; if variation is zero, done. */ |
|
*variation_name = systype_names[0]; |
|
if (variation == 0) { |
|
return; |
|
} |
|
|
|
member = (variation >> 10) & 0x3f; /* member ID is a bit-field */ |
|
|
|
cpu &= 0xffffffff; /* make it usable */ |
|
|
|
switch (type) { /* select by family */ |
|
default: /* default to variation "0" for now */ |
|
break; |
|
case ST_DEC_EB164: |
|
if (member >= ARRAY_SIZE(eb164_indices)) |
|
break; |
|
*variation_name = eb164_names[eb164_indices[member]]; |
|
/* PC164 may show as EB164 variation, but with EV56 CPU, |
|
so, since no true EB164 had anything but EV5... */ |
|
if (eb164_indices[member] == 0 && cpu == EV56_CPU) |
|
*variation_name = eb164_names[1]; /* make it PC164 */ |
|
break; |
|
case ST_DEC_ALCOR: |
|
if (member < ARRAY_SIZE(alcor_indices)) |
|
*variation_name = alcor_names[alcor_indices[member]]; |
|
break; |
|
case ST_DEC_EB64P: |
|
if (member < ARRAY_SIZE(eb64p_indices)) |
|
*variation_name = eb64p_names[eb64p_indices[member]]; |
|
break; |
|
case ST_DEC_EB66: |
|
if (member < ARRAY_SIZE(eb66_indices)) |
|
*variation_name = eb66_names[eb66_indices[member]]; |
|
break; |
|
case ST_DEC_MARVEL: |
|
if (member < ARRAY_SIZE(marvel_indices)) |
|
*variation_name = marvel_names[marvel_indices[member]]; |
|
break; |
|
case ST_DEC_RAWHIDE: |
|
if (member < ARRAY_SIZE(rawhide_indices)) |
|
*variation_name = rawhide_names[rawhide_indices[member]]; |
|
break; |
|
case ST_DEC_TITAN: |
|
*variation_name = titan_names[0]; /* default */ |
|
if (member < ARRAY_SIZE(titan_indices)) |
|
*variation_name = titan_names[titan_indices[member]]; |
|
break; |
|
case ST_DEC_TSUNAMI: |
|
if (member < ARRAY_SIZE(tsunami_indices)) |
|
*variation_name = tsunami_names[tsunami_indices[member]]; |
|
break; |
|
} |
|
} |
|
|
|
/* |
|
* A change was made to the HWRPB via an ECO and the following code |
|
* tracks a part of the ECO. In HWRPB versions less than 5, the ECO |
|
* was not implemented in the console firmware. If it's revision 5 or |
|
* greater we can get the name of the platform as an ASCII string from |
|
* the HWRPB. That's what this function does. It checks the revision |
|
* level and if the string is in the HWRPB it returns the address of |
|
* the string--a pointer to the name of the platform. |
|
* |
|
* Returns: |
|
* - Pointer to a ASCII string if it's in the HWRPB |
|
* - Pointer to a blank string if the data is not in the HWRPB. |
|
*/ |
|
|
|
static char * |
|
platform_string(void) |
|
{ |
|
struct dsr_struct *dsr; |
|
static char unk_system_string[] = "N/A"; |
|
|
|
/* Go to the console for the string pointer. |
|
* If the rpb_vers is not 5 or greater the rpb |
|
* is old and does not have this data in it. |
|
*/ |
|
if (hwrpb->revision < 5) |
|
return (unk_system_string); |
|
else { |
|
/* The Dynamic System Recognition struct |
|
* has the system platform name starting |
|
* after the character count of the string. |
|
*/ |
|
dsr = ((struct dsr_struct *) |
|
((char *)hwrpb + hwrpb->dsr_offset)); |
|
return ((char *)dsr + (dsr->sysname_off + |
|
sizeof(long))); |
|
} |
|
} |
|
|
|
static int |
|
get_nr_processors(struct percpu_struct *cpubase, unsigned long num) |
|
{ |
|
struct percpu_struct *cpu; |
|
unsigned long i; |
|
int count = 0; |
|
|
|
for (i = 0; i < num; i++) { |
|
cpu = (struct percpu_struct *) |
|
((char *)cpubase + i*hwrpb->processor_size); |
|
if ((cpu->flags & 0x1cc) == 0x1cc) |
|
count++; |
|
} |
|
return count; |
|
} |
|
|
|
static void |
|
show_cache_size (struct seq_file *f, const char *which, int shape) |
|
{ |
|
if (shape == -1) |
|
seq_printf (f, "%s\t\t: n/a\n", which); |
|
else if (shape == 0) |
|
seq_printf (f, "%s\t\t: unknown\n", which); |
|
else |
|
seq_printf (f, "%s\t\t: %dK, %d-way, %db line\n", |
|
which, shape >> 10, shape & 15, |
|
1 << ((shape >> 4) & 15)); |
|
} |
|
|
|
static int |
|
show_cpuinfo(struct seq_file *f, void *slot) |
|
{ |
|
extern struct unaligned_stat { |
|
unsigned long count, va, pc; |
|
} unaligned[2]; |
|
|
|
static char cpu_names[][8] = { |
|
"EV3", "EV4", "Simulate", "LCA4", "EV5", "EV45", "EV56", |
|
"EV6", "PCA56", "PCA57", "EV67", "EV68CB", "EV68AL", |
|
"EV68CX", "EV7", "EV79", "EV69" |
|
}; |
|
|
|
struct percpu_struct *cpu = slot; |
|
unsigned int cpu_index; |
|
char *cpu_name; |
|
char *systype_name; |
|
char *sysvariation_name; |
|
int nr_processors; |
|
unsigned long timer_freq; |
|
|
|
cpu_index = (unsigned) (cpu->type - 1); |
|
cpu_name = "Unknown"; |
|
if (cpu_index < ARRAY_SIZE(cpu_names)) |
|
cpu_name = cpu_names[cpu_index]; |
|
|
|
get_sysnames(hwrpb->sys_type, hwrpb->sys_variation, |
|
cpu->type, &systype_name, &sysvariation_name); |
|
|
|
nr_processors = get_nr_processors(cpu, hwrpb->nr_processors); |
|
|
|
#if CONFIG_HZ == 1024 || CONFIG_HZ == 1200 |
|
timer_freq = (100UL * hwrpb->intr_freq) / 4096; |
|
#else |
|
timer_freq = 100UL * CONFIG_HZ; |
|
#endif |
|
|
|
seq_printf(f, "cpu\t\t\t: Alpha\n" |
|
"cpu model\t\t: %s\n" |
|
"cpu variation\t\t: %ld\n" |
|
"cpu revision\t\t: %ld\n" |
|
"cpu serial number\t: %s\n" |
|
"system type\t\t: %s\n" |
|
"system variation\t: %s\n" |
|
"system revision\t\t: %ld\n" |
|
"system serial number\t: %s\n" |
|
"cycle frequency [Hz]\t: %lu %s\n" |
|
"timer frequency [Hz]\t: %lu.%02lu\n" |
|
"page size [bytes]\t: %ld\n" |
|
"phys. address bits\t: %ld\n" |
|
"max. addr. space #\t: %ld\n" |
|
"BogoMIPS\t\t: %lu.%02lu\n" |
|
"kernel unaligned acc\t: %ld (pc=%lx,va=%lx)\n" |
|
"user unaligned acc\t: %ld (pc=%lx,va=%lx)\n" |
|
"platform string\t\t: %s\n" |
|
"cpus detected\t\t: %d\n", |
|
cpu_name, cpu->variation, cpu->revision, |
|
(char*)cpu->serial_no, |
|
systype_name, sysvariation_name, hwrpb->sys_revision, |
|
(char*)hwrpb->ssn, |
|
est_cycle_freq ? : hwrpb->cycle_freq, |
|
est_cycle_freq ? "est." : "", |
|
timer_freq / 100, timer_freq % 100, |
|
hwrpb->pagesize, |
|
hwrpb->pa_bits, |
|
hwrpb->max_asn, |
|
loops_per_jiffy / (500000/HZ), |
|
(loops_per_jiffy / (5000/HZ)) % 100, |
|
unaligned[0].count, unaligned[0].pc, unaligned[0].va, |
|
unaligned[1].count, unaligned[1].pc, unaligned[1].va, |
|
platform_string(), nr_processors); |
|
|
|
#ifdef CONFIG_SMP |
|
seq_printf(f, "cpus active\t\t: %u\n" |
|
"cpu active mask\t\t: %016lx\n", |
|
num_online_cpus(), cpumask_bits(cpu_possible_mask)[0]); |
|
#endif |
|
|
|
show_cache_size (f, "L1 Icache", alpha_l1i_cacheshape); |
|
show_cache_size (f, "L1 Dcache", alpha_l1d_cacheshape); |
|
show_cache_size (f, "L2 cache", alpha_l2_cacheshape); |
|
show_cache_size (f, "L3 cache", alpha_l3_cacheshape); |
|
|
|
return 0; |
|
} |
|
|
|
static int __init |
|
read_mem_block(int *addr, int stride, int size) |
|
{ |
|
long nloads = size / stride, cnt, tmp; |
|
|
|
__asm__ __volatile__( |
|
" rpcc %0\n" |
|
"1: ldl %3,0(%2)\n" |
|
" subq %1,1,%1\n" |
|
/* Next two XORs introduce an explicit data dependency between |
|
consecutive loads in the loop, which will give us true load |
|
latency. */ |
|
" xor %3,%2,%2\n" |
|
" xor %3,%2,%2\n" |
|
" addq %2,%4,%2\n" |
|
" bne %1,1b\n" |
|
" rpcc %3\n" |
|
" subl %3,%0,%0\n" |
|
: "=&r" (cnt), "=&r" (nloads), "=&r" (addr), "=&r" (tmp) |
|
: "r" (stride), "1" (nloads), "2" (addr)); |
|
|
|
return cnt / (size / stride); |
|
} |
|
|
|
#define CSHAPE(totalsize, linesize, assoc) \ |
|
((totalsize & ~0xff) | (linesize << 4) | assoc) |
|
|
|
/* ??? EV5 supports up to 64M, but did the systems with more than |
|
16M of BCACHE ever exist? */ |
|
#define MAX_BCACHE_SIZE 16*1024*1024 |
|
|
|
/* Note that the offchip caches are direct mapped on all Alphas. */ |
|
static int __init |
|
external_cache_probe(int minsize, int width) |
|
{ |
|
int cycles, prev_cycles = 1000000; |
|
int stride = 1 << width; |
|
long size = minsize, maxsize = MAX_BCACHE_SIZE * 2; |
|
|
|
if (maxsize > (max_low_pfn + 1) << PAGE_SHIFT) |
|
maxsize = 1 << (ilog2(max_low_pfn + 1) + PAGE_SHIFT); |
|
|
|
/* Get the first block cached. */ |
|
read_mem_block(__va(0), stride, size); |
|
|
|
while (size < maxsize) { |
|
/* Get an average load latency in cycles. */ |
|
cycles = read_mem_block(__va(0), stride, size); |
|
if (cycles > prev_cycles * 2) { |
|
/* Fine, we exceed the cache. */ |
|
printk("%ldK Bcache detected; load hit latency %d " |
|
"cycles, load miss latency %d cycles\n", |
|
size >> 11, prev_cycles, cycles); |
|
return CSHAPE(size >> 1, width, 1); |
|
} |
|
/* Try to get the next block cached. */ |
|
read_mem_block(__va(size), stride, size); |
|
prev_cycles = cycles; |
|
size <<= 1; |
|
} |
|
return -1; /* No BCACHE found. */ |
|
} |
|
|
|
static void __init |
|
determine_cpu_caches (unsigned int cpu_type) |
|
{ |
|
int L1I, L1D, L2, L3; |
|
|
|
switch (cpu_type) { |
|
case EV4_CPU: |
|
case EV45_CPU: |
|
{ |
|
if (cpu_type == EV4_CPU) |
|
L1I = CSHAPE(8*1024, 5, 1); |
|
else |
|
L1I = CSHAPE(16*1024, 5, 1); |
|
L1D = L1I; |
|
L3 = -1; |
|
|
|
/* BIU_CTL is a write-only Abox register. PALcode has a |
|
shadow copy, and may be available from some versions |
|
of the CSERVE PALcall. If we can get it, then |
|
|
|
unsigned long biu_ctl, size; |
|
size = 128*1024 * (1 << ((biu_ctl >> 28) & 7)); |
|
L2 = CSHAPE (size, 5, 1); |
|
|
|
Unfortunately, we can't rely on that. |
|
*/ |
|
L2 = external_cache_probe(128*1024, 5); |
|
break; |
|
} |
|
|
|
case LCA4_CPU: |
|
{ |
|
unsigned long car, size; |
|
|
|
L1I = L1D = CSHAPE(8*1024, 5, 1); |
|
L3 = -1; |
|
|
|
car = *(vuip) phys_to_virt (0x120000078UL); |
|
size = 64*1024 * (1 << ((car >> 5) & 7)); |
|
/* No typo -- 8 byte cacheline size. Whodathunk. */ |
|
L2 = (car & 1 ? CSHAPE (size, 3, 1) : -1); |
|
break; |
|
} |
|
|
|
case EV5_CPU: |
|
case EV56_CPU: |
|
{ |
|
unsigned long sc_ctl, width; |
|
|
|
L1I = L1D = CSHAPE(8*1024, 5, 1); |
|
|
|
/* Check the line size of the Scache. */ |
|
sc_ctl = *(vulp) phys_to_virt (0xfffff000a8UL); |
|
width = sc_ctl & 0x1000 ? 6 : 5; |
|
L2 = CSHAPE (96*1024, width, 3); |
|
|
|
/* BC_CONTROL and BC_CONFIG are write-only IPRs. PALcode |
|
has a shadow copy, and may be available from some versions |
|
of the CSERVE PALcall. If we can get it, then |
|
|
|
unsigned long bc_control, bc_config, size; |
|
size = 1024*1024 * (1 << ((bc_config & 7) - 1)); |
|
L3 = (bc_control & 1 ? CSHAPE (size, width, 1) : -1); |
|
|
|
Unfortunately, we can't rely on that. |
|
*/ |
|
L3 = external_cache_probe(1024*1024, width); |
|
break; |
|
} |
|
|
|
case PCA56_CPU: |
|
case PCA57_CPU: |
|
{ |
|
if (cpu_type == PCA56_CPU) { |
|
L1I = CSHAPE(16*1024, 6, 1); |
|
L1D = CSHAPE(8*1024, 5, 1); |
|
} else { |
|
L1I = CSHAPE(32*1024, 6, 2); |
|
L1D = CSHAPE(16*1024, 5, 1); |
|
} |
|
L3 = -1; |
|
|
|
#if 0 |
|
unsigned long cbox_config, size; |
|
|
|
cbox_config = *(vulp) phys_to_virt (0xfffff00008UL); |
|
size = 512*1024 * (1 << ((cbox_config >> 12) & 3)); |
|
|
|
L2 = ((cbox_config >> 31) & 1 ? CSHAPE (size, 6, 1) : -1); |
|
#else |
|
L2 = external_cache_probe(512*1024, 6); |
|
#endif |
|
break; |
|
} |
|
|
|
case EV6_CPU: |
|
case EV67_CPU: |
|
case EV68CB_CPU: |
|
case EV68AL_CPU: |
|
case EV68CX_CPU: |
|
case EV69_CPU: |
|
L1I = L1D = CSHAPE(64*1024, 6, 2); |
|
L2 = external_cache_probe(1024*1024, 6); |
|
L3 = -1; |
|
break; |
|
|
|
case EV7_CPU: |
|
case EV79_CPU: |
|
L1I = L1D = CSHAPE(64*1024, 6, 2); |
|
L2 = CSHAPE(7*1024*1024/4, 6, 7); |
|
L3 = -1; |
|
break; |
|
|
|
default: |
|
/* Nothing known about this cpu type. */ |
|
L1I = L1D = L2 = L3 = 0; |
|
break; |
|
} |
|
|
|
alpha_l1i_cacheshape = L1I; |
|
alpha_l1d_cacheshape = L1D; |
|
alpha_l2_cacheshape = L2; |
|
alpha_l3_cacheshape = L3; |
|
} |
|
|
|
/* |
|
* We show only CPU #0 info. |
|
*/ |
|
static void * |
|
c_start(struct seq_file *f, loff_t *pos) |
|
{ |
|
return *pos ? NULL : (char *)hwrpb + hwrpb->processor_offset; |
|
} |
|
|
|
static void * |
|
c_next(struct seq_file *f, void *v, loff_t *pos) |
|
{ |
|
(*pos)++; |
|
return NULL; |
|
} |
|
|
|
static void |
|
c_stop(struct seq_file *f, void *v) |
|
{ |
|
} |
|
|
|
const struct seq_operations cpuinfo_op = { |
|
.start = c_start, |
|
.next = c_next, |
|
.stop = c_stop, |
|
.show = show_cpuinfo, |
|
}; |
|
|
|
|
|
static int |
|
alpha_panic_event(struct notifier_block *this, unsigned long event, void *ptr) |
|
{ |
|
#if 1 |
|
/* FIXME FIXME FIXME */ |
|
/* If we are using SRM and serial console, just hard halt here. */ |
|
if (alpha_using_srm && srmcons_output) |
|
__halt(); |
|
#endif |
|
return NOTIFY_DONE; |
|
} |
|
|
|
static __init int add_pcspkr(void) |
|
{ |
|
struct platform_device *pd; |
|
int ret; |
|
|
|
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);
|
|
|