// SPDX-License-Identifier: GPL-2.0
/*
* linux / arch / alpha / kernel / setup . c
*
* Copyright ( C ) 1995 Linus Torvalds
*/
/* 2.3.x bootmem, 1999 Andrea Arcangeli <andrea@suse.de> */
/*
* Bootup setup stuff .
*/
#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/screen_info.h>
#include <linux/delay.h>
#include <linux/mc146818rtc.h>
#include <linux/console.h>
#include <linux/cpu.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/string.h>
#include <linux/ioport.h>
#include <linux/panic_notifier.h>
#include <linux/platform_device.h>
#include <linux/memblock.h>
#include <linux/pci.h>
#include <linux/seq_file.h>
#include <linux/root_dev.h>
#include <linux/initrd.h>
#include <linux/eisa.h>
#include <linux/pfn.h>
#ifdef CONFIG_MAGIC_SYSRQ
#include <linux/sysrq.h>
#include <linux/reboot.h>
#endif
#include <linux/notifier.h>
#include <asm /setup.h>
#include <asm /io.h>
#include <linux/log2.h>
#include <linux/export.h>
static int alpha_panic_event(struct notifier_block *, unsigned long , void *);
static struct notifier_block alpha_panic_block = {
alpha_panic_event,
NULL,
INT_MAX /* try to do it first */
};
#include <linux/uaccess.h>
#include <asm /hwrpb.h>
#include <asm /dma.h>
#include <asm /mmu_context.h>
#include <asm /console.h>
#include "proto.h"
#include "pci_impl.h"
struct hwrpb_struct *hwrpb;
EXPORT_SYMBOL(hwrpb);
unsigned long srm_hae;
int alpha_l1i_cacheshape;
int alpha_l1d_cacheshape;
int alpha_l2_cacheshape;
int alpha_l3_cacheshape;
#ifdef CONFIG_VERBOSE_MCHECK
/* 0=minimum, 1=verbose, 2=all */
/* These can be overridden via the command line, ie "verbose_mcheck=2") */
unsigned long alpha_verbose_mcheck = CONFIG_VERBOSE_MCHECK_ON;
#endif
/* Which processor we booted from. */
int boot_cpuid;
/*
* Using SRM callbacks for initial console output . This works from
* setup_arch ( ) time through the end of time_init ( ) , as those places
* are under our ( Alpha ) control .
* " srmcons " specified in the boot command arguments allows us to
* see kernel messages during the period of time before the true
* console device is " registered " during console_init ( ) .
* As of this version ( 2 . 5 . 59 ) , console_init ( ) will call
* disable_early_printk ( ) as the last action before initializing
* the console drivers . That ' s the last possible time srmcons can be
* unregistered without interfering with console behavior .
*
* By default , OFF ; set it with a bootcommand arg of " srmcons " or
* " console = srm " . The meaning of these two args is :
* " srmcons " - early callback prints
* " console = srm " - full callback based console , including early prints
*/
int srmcons_output = 0 ;
/* Enforce a memory size limit; useful for testing. By default, none. */
unsigned long mem_size_limit = 0 ;
/* Set AGP GART window size (0 means disabled). */
unsigned long alpha_agpgart_size = DEFAULT_AGP_APER_SIZE;
#ifdef CONFIG_ALPHA_GENERIC
struct alpha_machine_vector alpha_mv;
EXPORT_SYMBOL(alpha_mv);
#endif
#ifndef alpha_using_srm
int alpha_using_srm;
EXPORT_SYMBOL(alpha_using_srm);
#endif
#ifndef alpha_using_qemu
int alpha_using_qemu;
#endif
static struct alpha_machine_vector *get_sysvec(unsigned long , unsigned long ,
unsigned long );
static struct alpha_machine_vector *get_sysvec_byname(const char *);
static void get_sysnames(unsigned long , unsigned long , unsigned long ,
char **, char **);
static void determine_cpu_caches (unsigned int );
static char __initdata command_line[COMMAND_LINE_SIZE];
#ifdef CONFIG_VGA_CONSOLE
/*
* The format of " screen_info " is strange , and due to early
* i386 - setup code . This is just enough to make the console
* code think we ' re on a VGA color display .
*/
struct screen_info vgacon_screen_info = {
.orig_x = 0 ,
.orig_y = 25 ,
.orig_video_cols = 80 ,
.orig_video_lines = 25 ,
.orig_video_isVGA = 1 ,
.orig_video_points = 16
};
#endif
/*
* The direct map I / O window , if any . This should be the same
* for all busses , since it ' s used by virt_to_bus .
*/
unsigned long __direct_map_base;
unsigned long __direct_map_size;
EXPORT_SYMBOL(__direct_map_base);
EXPORT_SYMBOL(__direct_map_size);
/*
* Declare all of the machine vectors .
*/
/* GCC 2.7.2 (on alpha at least) is lame. It does not support either
_ _ attribute__ ( ( weak ) ) or # pragma weak . Bypass it and talk directly
to the assembler. */
#define WEAK(X) \
extern struct alpha_machine_vector X; \
asm (".weak " #X )
WEAK(alcor_mv);
WEAK(clipper_mv);
WEAK(dp264_mv);
WEAK(eb164_mv);
WEAK(eiger_mv);
WEAK(lx164_mv);
WEAK(marvel_ev7_mv);
WEAK(miata_mv);
WEAK(mikasa_primo_mv);
WEAK(monet_mv);
WEAK(nautilus_mv);
WEAK(noritake_primo_mv);
WEAK(pc164_mv);
WEAK(privateer_mv);
WEAK(rawhide_mv);
WEAK(ruffian_mv);
WEAK(rx164_mv);
WEAK(sable_gamma_mv);
WEAK(shark_mv);
WEAK(sx164_mv);
WEAK(takara_mv);
WEAK(titan_mv);
WEAK(webbrick_mv);
WEAK(wildfire_mv);
WEAK(xlt_mv);
#undef WEAK
/*
* I / O resources inherited from PeeCees . Except for perhaps the
* turbochannel alphas , everyone has these on some sort of SuperIO chip .
*
* ? ? ? If this becomes less standard , move the struct out into the
* machine vector .
*/
static void __init
reserve_std_resources(void )
{
static struct resource standard_io_resources[] = {
{ .name = "rtc" , .start = 0 x70, .end = 0 x7f},
{ .name = "dma1" , .start = 0 x00, .end = 0 x1f },
{ .name = "pic1" , .start = 0 x20, .end = 0 x3f },
{ .name = "timer" , .start = 0 x40, .end = 0 x5f },
{ .name = "keyboard" , .start = 0 x60, .end = 0 x6f },
{ .name = "dma page reg" , .start = 0 x80, .end = 0 x8f },
{ .name = "pic2" , .start = 0 xa0, .end = 0 xbf },
{ .name = "dma2" , .start = 0 xc0, .end = 0 xdf },
};
struct resource *io = &ioport_resource;
size_t i;
if (hose_head) {
struct pci_controller *hose;
for (hose = hose_head; hose; hose = hose->next)
if (hose->index == 0 ) {
io = hose->io_space;
break ;
}
}
for (i = 0 ; i < ARRAY_SIZE(standard_io_resources); ++i)
request_resource(io, standard_io_resources+i);
}
#define PFN_MAX PFN_DOWN(0 x80000000)
#define for_each_mem_cluster(memdesc, _cluster, i) \
for ((_cluster) = (memdesc)->cluster, (i) = 0 ; \
(i) < (memdesc)->numclusters; (i)++, (_cluster)++)
static unsigned long __init
get_mem_size_limit(char *s)
{
unsigned long end = 0 ;
char *from = s;
end = simple_strtoul(from, &from, 0 );
if ( *from == 'K' || *from == 'k' ) {
end = end << 10 ;
from++;
} else if ( *from == 'M' || *from == 'm' ) {
end = end << 20 ;
from++;
} else if ( *from == 'G' || *from == 'g' ) {
end = end << 30 ;
from++;
}
return end >> PAGE_SHIFT; /* Return the PFN of the limit. */
}
#ifdef CONFIG_BLK_DEV_INITRD
void * __init
move_initrd(unsigned long mem_limit)
{
void *start;
unsigned long size;
size = initrd_end - initrd_start;
start = memblock_alloc(PAGE_ALIGN(size), PAGE_SIZE);
if (!start || __pa(start) + size > mem_limit) {
initrd_start = initrd_end = 0 ;
return NULL;
}
memmove(start, (void *)initrd_start, size);
initrd_start = (unsigned long )start;
initrd_end = initrd_start + size;
printk("initrd moved to %p\n" , start);
return start;
}
#endif
static void __init
setup_memory(void *kernel_end)
{
struct memclust_struct * cluster;
struct memdesc_struct * memdesc;
unsigned long kernel_size;
unsigned long i;
/* Find free clusters, and init and free the bootmem accordingly. */
memdesc = (struct memdesc_struct *)
(hwrpb->mddt_offset + (unsigned long ) hwrpb);
for_each_mem_cluster(memdesc, cluster, i) {
unsigned long end;
printk("memcluster %lu, usage %01lx, start %8lu, end %8lu\n" ,
i, cluster->usage, cluster->start_pfn,
cluster->start_pfn + cluster->numpages);
end = cluster->start_pfn + cluster->numpages;
if (end > max_low_pfn)
max_low_pfn = end;
memblock_add(PFN_PHYS(cluster->start_pfn),
cluster->numpages << PAGE_SHIFT);
/* Bit 0 is console/PALcode reserved. Bit 1 is
non - volatile memory - - we might want to mark
this for later. */
if (cluster->usage & 3 )
memblock_reserve(PFN_PHYS(cluster->start_pfn),
cluster->numpages << PAGE_SHIFT);
}
/*
* Except for the NUMA systems ( wildfire , marvel ) all of the
* Alpha systems we run on support 32 GB of memory or less .
* Since the NUMA systems introduce large holes in memory addressing ,
* we can get into a situation where there is not enough contiguous
* memory for the memory map .
*
* Limit memory to the first 32 GB to limit the NUMA systems to
* memory on their first node ( wildfire ) or 2 ( marvel ) to avoid
* not being able to produce the memory map . In order to access
* all of the memory on the NUMA systems , build with discontiguous
* memory support .
*
* If the user specified a memory limit , let that memory limit stand .
*/
if (!mem_size_limit)
mem_size_limit = (32 ul * 1024 * 1024 * 1024 ) >> PAGE_SHIFT;
if (mem_size_limit && max_low_pfn >= mem_size_limit)
{
printk("setup: forcing memory size to %ldK (from %ldK).\n" ,
mem_size_limit << (PAGE_SHIFT - 10 ),
max_low_pfn << (PAGE_SHIFT - 10 ));
max_low_pfn = mem_size_limit;
}
/* Reserve the kernel memory. */
kernel_size = virt_to_phys(kernel_end) - KERNEL_START_PHYS;
memblock_reserve(KERNEL_START_PHYS, kernel_size);
#ifdef CONFIG_BLK_DEV_INITRD
initrd_start = INITRD_START;
if (initrd_start) {
initrd_end = initrd_start+INITRD_SIZE;
printk("Initial ramdisk at: 0x%p (%lu bytes)\n" ,
(void *) initrd_start, INITRD_SIZE);
if ((void *)initrd_end > phys_to_virt(PFN_PHYS(max_low_pfn))) {
if (!move_initrd(PFN_PHYS(max_low_pfn)))
printk("initrd extends beyond end of memory "
"(0x%08lx > 0x%p)\ndisabling initrd\n" ,
initrd_end,
phys_to_virt(PFN_PHYS(max_low_pfn)));
} else {
memblock_reserve(virt_to_phys((void *)initrd_start),
INITRD_SIZE);
}
}
#endif /* CONFIG_BLK_DEV_INITRD */
}
int page_is_ram(unsigned long pfn)
{
struct memclust_struct * cluster;
struct memdesc_struct * memdesc;
unsigned long i;
memdesc = (struct memdesc_struct *)
(hwrpb->mddt_offset + (unsigned long ) hwrpb);
for_each_mem_cluster(memdesc, cluster, i)
{
if (pfn >= cluster->start_pfn &&
pfn < cluster->start_pfn + cluster->numpages) {
return (cluster->usage & 3 ) ? 0 : 1 ;
}
}
return 0 ;
}
static int __init
register_cpus(void )
{
int i;
for_each_possible_cpu(i) {
struct cpu *p = kzalloc(sizeof (*p), GFP_KERNEL);
if (!p)
return -ENOMEM;
register_cpu(p, i);
}
return 0 ;
}
arch_initcall(register_cpus);
#ifdef CONFIG_MAGIC_SYSRQ
static void sysrq_reboot_handler(u8 unused)
{
machine_halt();
}
static const struct sysrq_key_op srm_sysrq_reboot_op = {
.handler = sysrq_reboot_handler,
.help_msg = "reboot(b)" ,
.action_msg = "Resetting" ,
.enable_mask = SYSRQ_ENABLE_BOOT,
};
#endif
void __init
setup_arch(char **cmdline_p)
{
extern char _end[];
struct alpha_machine_vector *vec = NULL;
struct percpu_struct *cpu;
char *type_name, *var_name, *p;
void *kernel_end = _end; /* end of kernel */
char *args = command_line;
hwrpb = (struct hwrpb_struct*) __va(INIT_HWRPB->phys_addr);
boot_cpuid = hard_smp_processor_id();
/*
* Pre - process the system type to make sure it will be valid .
*
* This may restore real CABRIO and EB66 + family names , ie
* EB64 + and EB66 .
*
* Oh , and " white box " AS800 ( aka DIGITAL Server 3000 series )
* and AS1200 ( DIGITAL Server 5000 series ) have the type as
* the negative of the real one .
*/
if ((long )hwrpb->sys_type < 0 ) {
hwrpb->sys_type = -((long )hwrpb->sys_type);
hwrpb_update_checksum(hwrpb);
}
/* Register a call for panic conditions. */
atomic_notifier_chain_register(&panic_notifier_list,
&alpha_panic_block);
#ifndef alpha_using_srm
/* Assume that we've booted from SRM if we haven't booted from MILO.
Detect the later by looking for "MILO" in the system serial nr. */
alpha_using_srm = !str_has_prefix((const char *)hwrpb->ssn, "MILO" );
#endif
#ifndef alpha_using_qemu
/* Similarly, look for QEMU. */
alpha_using_qemu = strstr((const char *)hwrpb->ssn, "QEMU" ) != 0 ;
#endif
/* If we are using SRM, we want to allow callbacks
as early as possible , so do this NOW , and then
they should work immediately thereafter .
*/
kernel_end = callback_init(kernel_end);
/*
* Locate the command line .
*/
strscpy(command_line, COMMAND_LINE, sizeof (command_line));
strcpy(boot_command_line, command_line);
*cmdline_p = command_line;
/*
* Process command - line arguments .
*/
while ((p = strsep(&args, " \t" )) != NULL) {
if (!*p) continue ;
if (strncmp(p, "alpha_mv=" , 9 ) == 0 ) {
vec = get_sysvec_byname(p+9 );
continue ;
}
if (strncmp(p, "cycle=" , 6 ) == 0 ) {
est_cycle_freq = simple_strtol(p+6 , NULL, 0 );
continue ;
}
if (strncmp(p, "mem=" , 4 ) == 0 ) {
mem_size_limit = get_mem_size_limit(p+4 );
continue ;
}
if (strncmp(p, "srmcons" , 7 ) == 0 ) {
srmcons_output |= 1 ;
continue ;
}
if (strncmp(p, "console=srm" , 11 ) == 0 ) {
srmcons_output |= 2 ;
continue ;
}
if (strncmp(p, "gartsize=" , 9 ) == 0 ) {
alpha_agpgart_size =
get_mem_size_limit(p+9 ) << PAGE_SHIFT;
continue ;
}
#ifdef CONFIG_VERBOSE_MCHECK
if (strncmp(p, "verbose_mcheck=" , 15 ) == 0 ) {
alpha_verbose_mcheck = simple_strtol(p+15 , NULL, 0 );
continue ;
}
#endif
}
/* 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) {
register_srm_console();
/*
* If " console = srm " was specified , clear the srmcons_output
* flag now so that time . c won ' t unregister_srm_console
*/
if (srmcons_output & 2 )
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_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(0 x7);
/* 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)
vgacon_register_screen(&vgacon_screen_info);
#endif
#endif
/* Default root filesystem to sda2. */
ROOT_DEV = MKDEV(SCSI_DISK0_MAJOR, 2 );
#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 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 */
NULL, /* Jensens */
NULL, /* Pelican */
NULL, /* Morgan */
NULL, /* Sable -- see below. */
NULL, /* Medulla */
NULL, /* Noname */
NULL, /* Turbolaser */
NULL, /* Avanti */
NULL, /* Mustang */
NULL, /* Alcor, Bret, Maverick. HWRPB inaccurate? */
NULL, /* Tradewind */
NULL, /* Mikasa -- see below. */
NULL, /* EB64 */
NULL, /* EB66 */
NULL, /* EB64+ */
NULL, /* Alphabook1 */
&rawhide_mv,
NULL, /* K2 */
NULL, /* Lynx */
NULL, /* XL */
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 *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 ) & 0 x3f;
cpu &= 0 xffffffff; /* 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_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:
vec = &mikasa_primo_mv;
break ;
case ST_DEC_NORITAKE:
vec = &noritake_primo_mv;
break ;
case ST_DEC_2100_A500:
vec = &sable_gamma_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,
&clipper_mv,
&dp264_mv,
&eb164_mv,
&eiger_mv,
&lx164_mv,
&miata_mv,
&mikasa_primo_mv,
&monet_mv,
&nautilus_mv,
&noritake_primo_mv,
&pc164_mv,
&privateer_mv,
&rawhide_mv,
&ruffian_mv,
&rx164_mv,
&sable_gamma_mv,
&shark_mv,
&sx164_mv,
&takara_mv,
&webbrick_mv,
&wildfire_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 ) & 0 x3f; /* member ID is a bit-field */
cpu &= 0 xffffffff; /* 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_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 & 0 x1cc) == 0 x1cc)
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 = (100 UL * hwrpb->intr_freq) / 4096 ;
#else
timer_freq = 100 UL * 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 & ~0 xff) | (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 (0 x120000078UL);
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 (0 xfffff000a8UL);
width = sc_ctl & 0 x1000 ? 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 (0 xfffff00008UL);
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);
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