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Linux-2.6.12-rc2

Browse Source 
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
This commit is contained in:
Linus Torvalds
2005-04-16 15:20:36 -07:00
commit 1da177e4c3
17291 changed files with 6718755 additions and 0 deletions
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arch/alpha/Kconfig
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arch/alpha/Kconfig.debug
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menu "Kernel hacking"
source "lib/Kconfig.debug"
config EARLY_PRINTK
bool
depends on ALPHA_GENERIC || ALPHA_SRM
default y
config DEBUG_RWLOCK
bool "Read-write spinlock debugging"
depends on DEBUG_KERNEL
help
If you say Y here then read-write lock processing will count how many
times it has tried to get the lock and issue an error message after
too many attempts. If you suspect a rwlock problem or a kernel
hacker asks for this option then say Y. Otherwise say N.
config DEBUG_SEMAPHORE
bool "Semaphore debugging"
depends on DEBUG_KERNEL
help
If you say Y here then semaphore processing will issue lots of
verbose debugging messages. If you suspect a semaphore problem or a
kernel hacker asks for this option then say Y. Otherwise say N.
config ALPHA_LEGACY_START_ADDRESS
bool "Legacy kernel start address"
depends on ALPHA_GENERIC
default n
---help---
The 2.4 kernel changed the kernel start address from 0x310000
to 0x810000 to make room for the Wildfire's larger SRM console.
Recent consoles on Titan and Marvel machines also require the
extra room.
If you're using aboot 0.7 or later, the bootloader will examine the
ELF headers to determine where to transfer control. Unfortunately,
most older bootloaders -- APB or MILO -- hardcoded the kernel start
address rather than examining the ELF headers, and the result is a
hard lockup.
Say Y if you have a broken bootloader. Say N if you do not, or if
you wish to run on Wildfire, Titan, or Marvel.
config ALPHA_LEGACY_START_ADDRESS
bool
depends on !ALPHA_GENERIC && !ALPHA_TITAN && !ALPHA_MARVEL && !ALPHA_WILDFIRE
default y
config MATHEMU
tristate "Kernel FP software completion" if DEBUG_KERNEL && !SMP
default y if !DEBUG_KERNEL || SMP
help
This option is required for IEEE compliant floating point arithmetic
on the Alpha. The only time you would ever not say Y is to say M in
order to debug the code. Say Y unless you know what you are doing.
endmenu
arch/alpha/Makefile
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#
# alpha/Makefile
#
# This file is subject to the terms and conditions of the GNU General Public
# License. See the file "COPYING" in the main directory of this archive
# for more details.
#
# Copyright (C) 1994 by Linus Torvalds
#
NM := $(NM) -B
LDFLAGS_vmlinux := -static -N #-relax
CHECKFLAGS += -D__alpha__ -m64
cflags-y := -pipe -mno-fp-regs -ffixed-8
# Determine if we can use the BWX instructions with GAS.
old_gas := $(shell if $(AS) --version 2>&1 | grep 'version 2.7' > /dev/null; then echo y; else echo n; fi)
ifeq ($(old_gas),y)
$(error The assembler '$(AS)' does not support the BWX instruction)
endif
# Determine if GCC understands the -mcpu= option.
have_mcpu := $(call cc-option-yn, -mcpu=ev5)
have_mcpu_pca56 := $(call cc-option-yn, -mcpu=pca56)
have_mcpu_ev6 := $(call cc-option-yn, -mcpu=ev6)
have_mcpu_ev67 := $(call cc-option-yn, -mcpu=ev67)
have_msmall_data := $(call cc-option-yn, -msmall-data)
cflags-$(have_msmall_data) += -msmall-data
# Turn on the proper cpu optimizations.
ifeq ($(have_mcpu),y)
mcpu_done := n
# If GENERIC, make sure to turn off any instruction set extensions that
# the host compiler might have on by default. Given that EV4 and EV5
# have the same instruction set, prefer EV5 because an EV5 schedule is
# more likely to keep an EV4 processor busy than vice-versa.
ifeq ($(CONFIG_ALPHA_GENERIC),y)
mcpu := ev5
mcpu_done := y
endif
ifeq ($(mcpu_done)$(CONFIG_ALPHA_SX164)$(have_mcpu_pca56),nyy)
mcpu := pca56
mcpu_done := y
endif
ifeq ($(mcpu_done)$(CONFIG_ALPHA_POLARIS)$(have_mcpu_pca56),nyy)
mcpu := pca56
mcpu_done := y
endif
ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV4),ny)
mcpu := ev4
mcpu_done := y
endif
ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV56),ny)
mcpu := ev56
mcpu_done := y
endif
ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV5),ny)
mcpu := ev5
mcpu_done := y
endif
ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV67)$(have_mcpu_ev67),nyy)
mcpu := ev67
mcpu_done := y
endif
ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV6),ny)
ifeq ($(have_mcpu_ev6),y)
mcpu := ev6
else
ifeq ($(have_mcpu_pca56),y)
mcpu := pca56
else
mcpu=ev56
endif
endif
mcpu_done := y
endif
cflags-$(mcpu_done) += -mcpu=$(mcpu)
endif
# For TSUNAMI, we must have the assembler not emulate our instructions.
# The same is true for IRONGATE, POLARIS, PYXIS.
# BWX is most important, but we don't really want any emulation ever.
CFLAGS += $(cflags-y) -Wa,-mev6
head-y := arch/alpha/kernel/head.o
core-y += arch/alpha/kernel/ arch/alpha/mm/
core-$(CONFIG_MATHEMU) += arch/alpha/math-emu/
drivers-$(CONFIG_OPROFILE) += arch/alpha/oprofile/
libs-y += arch/alpha/lib/
# export what is needed by arch/alpha/boot/Makefile
LIBS_Y := $(patsubst %/, %/lib.a, $(libs-y))
export LIBS_Y
boot := arch/alpha/boot
#Default target when executing make with no arguments
all boot: $(boot)/vmlinux.gz
$(boot)/vmlinux.gz: vmlinux
$(Q)$(MAKE) $(build)=$(boot) $@
bootimage bootpfile bootpzfile: vmlinux
$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
prepare: include/asm-$(ARCH)/asm_offsets.h
arch/$(ARCH)/kernel/asm-offsets.s: include/asm include/linux/version.h \
include/config/MARKER
include/asm-$(ARCH)/asm_offsets.h: arch/$(ARCH)/kernel/asm-offsets.s
$(call filechk,gen-asm-offsets)
archclean:
$(Q)$(MAKE) $(clean)=$(boot)
CLEAN_FILES += include/asm-$(ARCH)/asm_offsets.h
define archhelp
echo '* boot - Compressed kernel image (arch/alpha/boot/vmlinux.gz)'
echo ' bootimage - SRM bootable image (arch/alpha/boot/bootimage)'
echo ' bootpfile - BOOTP bootable image (arch/alpha/boot/bootpfile)'
echo ' bootpzfile - compressed kernel BOOTP image (arch/alpha/boot/bootpzfile)'
endef
arch/alpha/boot/Makefile
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#
# arch/alpha/boot/Makefile
#
# This file is subject to the terms and conditions of the GNU General Public
# License. See the file "COPYING" in the main directory of this archive
# for more details.
#
# Copyright (C) 1994 by Linus Torvalds
#
hostprogs-y := tools/mkbb tools/objstrip
targets := vmlinux.gz vmlinux \
vmlinux.nh tools/lxboot tools/bootlx tools/bootph \
tools/bootpzh bootloader bootpheader bootpzheader
OBJSTRIP := $(obj)/tools/objstrip
# SRM bootable image. Copy to offset 512 of a partition.
$(obj)/bootimage: $(addprefix $(obj)/tools/,mkbb lxboot bootlx) $(obj)/vmlinux.nh
( cat $(obj)/tools/lxboot $(obj)/tools/bootlx $(obj)/vmlinux.nh ) > $@
$(obj)/tools/mkbb $@ $(obj)/tools/lxboot
@echo ' Bootimage $@ is ready'
# BOOTP bootable image. Define INITRD during make to append initrd image.
$(obj)/bootpfile: $(obj)/tools/bootph $(obj)/vmlinux.nh
cat $(obj)/tools/bootph $(obj)/vmlinux.nh > $@
ifdef INITRD
cat $(INITRD) >> $@
endif
# Compressed kernel BOOTP bootable image.
# Define INITRD during make to append initrd image.
$(obj)/bootpzfile: $(obj)/tools/bootpzh $(obj)/vmlinux.nh.gz
cat $(obj)/tools/bootpzh $(obj)/vmlinux.nh.gz > $@
ifdef INITRD
cat $(INITRD) >> $@
endif
# Compressed kernel image
$(obj)/vmlinux.gz: $(obj)/vmlinux FORCE
$(call if_changed,gzip)
@echo ' Kernel $@ is ready'
$(obj)/main.o: $(obj)/ksize.h
$(obj)/bootp.o: $(obj)/ksize.h
$(obj)/bootpz.o: $(obj)/kzsize.h
$(obj)/ksize.h: $(obj)/vmlinux.nh FORCE
echo "#define KERNEL_SIZE `ls -l $(obj)/vmlinux.nh | awk '{print $$5}'`" > $@T
ifdef INITRD
[ -f $(INITRD) ] || exit 1
echo "#define INITRD_IMAGE_SIZE `ls -l $(INITRD) | awk '{print $$5}'`" >> $@T
endif
cmp -s $@T $@ || mv -f $@T $@
rm -f $@T
$(obj)/kzsize.h: $(obj)/vmlinux.nh.gz FORCE
echo "#define KERNEL_SIZE `ls -l $(obj)/vmlinux.nh | awk '{print $$5}'`" > $@T
echo "#define KERNEL_Z_SIZE `ls -l $(obj)/vmlinux.nh.gz | awk '{print $$5}'`" >> $@T
ifdef INITRD
[ -f $(INITRD) ] || exit 1
echo "#define INITRD_IMAGE_SIZE `ls -l $(INITRD) | awk '{print $$5}'`" >> $@T
endif
cmp -s $@T $@ || mv -f $@T $@
rm -f $@T
quiet_cmd_strip = STRIP $@
cmd_strip = $(STRIP) -o $@ $<
$(obj)/vmlinux: vmlinux FORCE
$(call if_changed,strip)
quiet_cmd_objstrip = OBJSTRIP $@
cmd_objstrip = $(OBJSTRIP) $(OSFLAGS_$(@F)) $< $@
OSFLAGS_vmlinux.nh := -v
OSFLAGS_lxboot := -p
OSFLAGS_bootlx := -vb
OSFLAGS_bootph := -vb
OSFLAGS_bootpzh := -vb
$(obj)/vmlinux.nh: vmlinux $(OBJSTRIP) FORCE
$(call if_changed,objstrip)
$(obj)/vmlinux.nh.gz: $(obj)/vmlinux.nh FORCE
$(call if_changed,gzip)
$(obj)/tools/lxboot: $(obj)/bootloader $(OBJSTRIP) FORCE
$(call if_changed,objstrip)
$(obj)/tools/bootlx: $(obj)/bootloader $(OBJSTRIP) FORCE
$(call if_changed,objstrip)
$(obj)/tools/bootph: $(obj)/bootpheader $(OBJSTRIP) FORCE
$(call if_changed,objstrip)
$(obj)/tools/bootpzh: $(obj)/bootpzheader $(OBJSTRIP) FORCE
$(call if_changed,objstrip)
LDFLAGS_bootloader := -static -uvsprintf -T #-N -relax
LDFLAGS_bootpheader := -static -uvsprintf -T #-N -relax
LDFLAGS_bootpzheader := -static -uvsprintf -T #-N -relax
OBJ_bootlx := $(obj)/head.o $(obj)/main.o
OBJ_bootph := $(obj)/head.o $(obj)/bootp.o
OBJ_bootpzh := $(obj)/head.o $(obj)/bootpz.o $(obj)/misc.o
$(obj)/bootloader: $(obj)/bootloader.lds $(OBJ_bootlx) FORCE
$(call if_changed,ld)
$(obj)/bootpheader: $(obj)/bootloader.lds $(OBJ_bootph) $(LIBS_Y) FORCE
$(call if_changed,ld)
$(obj)/bootpzheader: $(obj)/bootloader.lds $(OBJ_bootpzh) $(LIBS_Y) FORCE
$(call if_changed,ld)
$(obj)/misc.o: lib/inflate.c
arch/alpha/boot/bootloader.lds
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OUTPUT_FORMAT("elf64-alpha")
ENTRY(__start)
printk = srm_printk;
SECTIONS
{
. = 0x20000000;
.text : { *(.text) }
_etext = .;
PROVIDE (etext = .);
.rodata : { *(.rodata) *(.rodata.*) }
.data : { *(.data) CONSTRUCTORS }
.got : { *(.got) }
.sdata : { *(.sdata) }
_edata = .;
PROVIDE (edata = .);
.sbss : { *(.sbss) *(.scommon) }
.bss : { *(.bss) *(COMMON) }
_end = . ;
PROVIDE (end = .);
.mdebug 0 : { *(.mdebug) }
.note 0 : { *(.note) }
.comment 0 : { *(.comment) }
}
arch/alpha/boot/bootp.c
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/*
* arch/alpha/boot/bootp.c
*
* Copyright (C) 1997 Jay Estabrook
*
* This file is used for creating a bootp file for the Linux/AXP kernel
*
* based significantly on the arch/alpha/boot/main.c of Linus Torvalds
*/
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/version.h>
#include <linux/mm.h>
#include <asm/system.h>
#include <asm/console.h>
#include <asm/hwrpb.h>
#include <asm/pgtable.h>
#include <asm/io.h>
#include <stdarg.h>
#include "ksize.h"
extern unsigned long switch_to_osf_pal(unsigned long nr,
struct pcb_struct * pcb_va, struct pcb_struct * pcb_pa,
unsigned long *vptb);
extern void move_stack(unsigned long new_stack);
struct hwrpb_struct *hwrpb = INIT_HWRPB;
static struct pcb_struct pcb_va[1];
/*
* Find a physical address of a virtual object..
*
* This is easy using the virtual page table address.
*/
static inline void *
find_pa(unsigned long *vptb, void *ptr)
{
unsigned long address = (unsigned long) ptr;
unsigned long result;
result = vptb[address >> 13];
result >>= 32;
result <<= 13;
result |= address & 0x1fff;
return (void *) result;
}
/*
* This function moves into OSF/1 pal-code, and has a temporary
* PCB for that. The kernel proper should replace this PCB with
* the real one as soon as possible.
*
* The page table muckery in here depends on the fact that the boot
* code has the L1 page table identity-map itself in the second PTE
* in the L1 page table. Thus the L1-page is virtually addressable
* itself (through three levels) at virtual address 0x200802000.
*/
#define VPTB ((unsigned long *) 0x200000000)
#define L1 ((unsigned long *) 0x200802000)
void
pal_init(void)
{
unsigned long i, rev;
struct percpu_struct * percpu;
struct pcb_struct * pcb_pa;
/* Create the dummy PCB. */
pcb_va->ksp = 0;
pcb_va->usp = 0;
pcb_va->ptbr = L1[1] >> 32;
pcb_va->asn = 0;
pcb_va->pcc = 0;
pcb_va->unique = 0;
pcb_va->flags = 1;
pcb_va->res1 = 0;
pcb_va->res2 = 0;
pcb_pa = find_pa(VPTB, pcb_va);
/*
* a0 = 2 (OSF)
* a1 = return address, but we give the asm the vaddr of the PCB
* a2 = physical addr of PCB
* a3 = new virtual page table pointer
* a4 = KSP (but the asm sets it)
*/
srm_printk("Switching to OSF PAL-code .. ");
i = switch_to_osf_pal(2, pcb_va, pcb_pa, VPTB);
if (i) {
srm_printk("failed, code %ld\n", i);
__halt();
}
percpu = (struct percpu_struct *)
(INIT_HWRPB->processor_offset + (unsigned long) INIT_HWRPB);
rev = percpu->pal_revision = percpu->palcode_avail[2];
srm_printk("Ok (rev %lx)\n", rev);
tbia(); /* do it directly in case we are SMP */
}
static inline void
load(unsigned long dst, unsigned long src, unsigned long count)
{
memcpy((void *)dst, (void *)src, count);
}
/*
* Start the kernel.
*/
static inline void
runkernel(void)
{
__asm__ __volatile__(
"bis %0,%0,$27\n\t"
"jmp ($27)"
: /* no outputs: it doesn't even return */
: "r" (START_ADDR));
}
extern char _end;
#define KERNEL_ORIGIN \
((((unsigned long)&_end) + 511) & ~511)
void
start_kernel(void)
{
/*
* Note that this crufty stuff with static and envval
* and envbuf is because:
*
* 1. Frequently, the stack is short, and we don't want to overrun;
* 2. Frequently the stack is where we are going to copy the kernel to;
* 3. A certain SRM console required the GET_ENV output to stack.
* ??? A comment in the aboot sources indicates that the GET_ENV
* destination must be quadword aligned. Might this explain the
* behaviour, rather than requiring output to the stack, which
* seems rather far-fetched.
*/
static long nbytes;
static char envval[256] __attribute__((aligned(8)));
static unsigned long initrd_start;
srm_printk("Linux/AXP bootp loader for Linux " UTS_RELEASE "\n");
if (INIT_HWRPB->pagesize != 8192) {
srm_printk("Expected 8kB pages, got %ldkB\n",
INIT_HWRPB->pagesize >> 10);
return;
}
if (INIT_HWRPB->vptb != (unsigned long) VPTB) {
srm_printk("Expected vptb at %p, got %p\n",
VPTB, (void *)INIT_HWRPB->vptb);
return;
}
pal_init();
/* The initrd must be page-aligned. See below for the
cause of the magic number 5. */
initrd_start = ((START_ADDR + 5*KERNEL_SIZE + PAGE_SIZE) |
(PAGE_SIZE-1)) + 1;
#ifdef INITRD_IMAGE_SIZE
srm_printk("Initrd positioned at %#lx\n", initrd_start);
#endif
/*
* Move the stack to a safe place to ensure it won't be
* overwritten by kernel image.
*/
move_stack(initrd_start - PAGE_SIZE);
nbytes = callback_getenv(ENV_BOOTED_OSFLAGS, envval, sizeof(envval));
if (nbytes < 0 || nbytes >= sizeof(envval)) {
nbytes = 0;
}
envval[nbytes] = '\0';
srm_printk("Loading the kernel...'%s'\n", envval);
/* NOTE: *no* callbacks or printouts from here on out!!! */
/* This is a hack, as some consoles seem to get virtual 20000000 (ie
* where the SRM console puts the kernel bootp image) memory
* overlapping physical memory where the kernel wants to be put,
* which causes real problems when attempting to copy the former to
* the latter... :-(
*
* So, we first move the kernel virtual-to-physical way above where
* we physically want the kernel to end up, then copy it from there
* to its final resting place... ;-}
*
* Sigh... */
#ifdef INITRD_IMAGE_SIZE
load(initrd_start, KERNEL_ORIGIN+KERNEL_SIZE, INITRD_IMAGE_SIZE);
#endif
load(START_ADDR+(4*KERNEL_SIZE), KERNEL_ORIGIN, KERNEL_SIZE);
load(START_ADDR, START_ADDR+(4*KERNEL_SIZE), KERNEL_SIZE);
memset((char*)ZERO_PGE, 0, PAGE_SIZE);
strcpy((char*)ZERO_PGE, envval);
#ifdef INITRD_IMAGE_SIZE
((long *)(ZERO_PGE+256))[0] = initrd_start;
((long *)(ZERO_PGE+256))[1] = INITRD_IMAGE_SIZE;
#endif
runkernel();
}
arch/alpha/boot/bootpz.c
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/*
* arch/alpha/boot/bootpz.c
*
* Copyright (C) 1997 Jay Estabrook
*
* This file is used for creating a compressed BOOTP file for the
* Linux/AXP kernel
*
* based significantly on the arch/alpha/boot/main.c of Linus Torvalds
* and the decompression code from MILO.
*/
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/version.h>
#include <linux/mm.h>
#include <asm/system.h>
#include <asm/console.h>
#include <asm/hwrpb.h>
#include <asm/pgtable.h>
#include <asm/io.h>
#include <stdarg.h>
#include "kzsize.h"
/* FIXME FIXME FIXME */
#define MALLOC_AREA_SIZE 0x200000 /* 2MB for now */
/* FIXME FIXME FIXME */
/*
WARNING NOTE
It is very possible that turning on additional messages may cause
kernel image corruption due to stack usage to do the printing.
*/
#undef DEBUG_CHECK_RANGE
#undef DEBUG_ADDRESSES
#undef DEBUG_LAST_STEPS
extern unsigned long switch_to_osf_pal(unsigned long nr,
struct pcb_struct * pcb_va, struct pcb_struct * pcb_pa,
unsigned long *vptb);
extern int decompress_kernel(void* destination, void *source,
size_t ksize, size_t kzsize);
extern void move_stack(unsigned long new_stack);
struct hwrpb_struct *hwrpb = INIT_HWRPB;
static struct pcb_struct pcb_va[1];
/*
* Find a physical address of a virtual object..
*
* This is easy using the virtual page table address.
*/
#define VPTB ((unsigned long *) 0x200000000)
static inline unsigned long
find_pa(unsigned long address)
{
unsigned long result;
result = VPTB[address >> 13];
result >>= 32;
result <<= 13;
result |= address & 0x1fff;
return result;
}
int
check_range(unsigned long vstart, unsigned long vend,
unsigned long kstart, unsigned long kend)
{
unsigned long vaddr, kaddr;
#ifdef DEBUG_CHECK_RANGE
srm_printk("check_range: V[0x%lx:0x%lx] K[0x%lx:0x%lx]\n",
vstart, vend, kstart, kend);
#endif
/* do some range checking for detecting an overlap... */
for (vaddr = vstart; vaddr <= vend; vaddr += PAGE_SIZE)
{
kaddr = (find_pa(vaddr) | PAGE_OFFSET);
if (kaddr >= kstart && kaddr <= kend)
{
#ifdef DEBUG_CHECK_RANGE
srm_printk("OVERLAP: vaddr 0x%lx kaddr 0x%lx"
" [0x%lx:0x%lx]\n",
vaddr, kaddr, kstart, kend);
#endif
return 1;
}
}
return 0;
}
/*
* This function moves into OSF/1 pal-code, and has a temporary
* PCB for that. The kernel proper should replace this PCB with
* the real one as soon as possible.
*
* The page table muckery in here depends on the fact that the boot
* code has the L1 page table identity-map itself in the second PTE
* in the L1 page table. Thus the L1-page is virtually addressable
* itself (through three levels) at virtual address 0x200802000.
*/
#define L1 ((unsigned long *) 0x200802000)
void
pal_init(void)
{
unsigned long i, rev;
struct percpu_struct * percpu;
struct pcb_struct * pcb_pa;
/* Create the dummy PCB. */
pcb_va->ksp = 0;
pcb_va->usp = 0;
pcb_va->ptbr = L1[1] >> 32;
pcb_va->asn = 0;
pcb_va->pcc = 0;
pcb_va->unique = 0;
pcb_va->flags = 1;
pcb_va->res1 = 0;
pcb_va->res2 = 0;
pcb_pa = (struct pcb_struct *)find_pa((unsigned long)pcb_va);
/*
* a0 = 2 (OSF)
* a1 = return address, but we give the asm the vaddr of the PCB
* a2 = physical addr of PCB
* a3 = new virtual page table pointer
* a4 = KSP (but the asm sets it)
*/
srm_printk("Switching to OSF PAL-code... ");
i = switch_to_osf_pal(2, pcb_va, pcb_pa, VPTB);
if (i) {
srm_printk("failed, code %ld\n", i);
__halt();
}
percpu = (struct percpu_struct *)
(INIT_HWRPB->processor_offset + (unsigned long) INIT_HWRPB);
rev = percpu->pal_revision = percpu->palcode_avail[2];
srm_printk("OK (rev %lx)\n", rev);
tbia(); /* do it directly in case we are SMP */
}
/*
* Start the kernel.
*/
static inline void
runkernel(void)
{
__asm__ __volatile__(
"bis %0,%0,$27\n\t"
"jmp ($27)"
: /* no outputs: it doesn't even return */
: "r" (START_ADDR));
}
/* Must record the SP (it is virtual) on entry, so we can make sure
not to overwrite it during movement or decompression. */
unsigned long SP_on_entry;
/* Calculate the kernel image address based on the end of the BOOTP
bootstrapper (ie this program).
*/
extern char _end;
#define KERNEL_ORIGIN \
((((unsigned long)&_end) + 511) & ~511)
/* Round address to next higher page boundary. */
#define NEXT_PAGE(a) (((a) | (PAGE_SIZE - 1)) + 1)
#ifdef INITRD_IMAGE_SIZE
# define REAL_INITRD_SIZE INITRD_IMAGE_SIZE
#else
# define REAL_INITRD_SIZE 0
#endif
/* Defines from include/asm-alpha/system.h
BOOT_ADDR Virtual address at which the consoles loads
the BOOTP image.
KERNEL_START KSEG address at which the kernel is built to run,
which includes some initial data pages before the
code.
START_ADDR KSEG address of the entry point of kernel code.
ZERO_PGE KSEG address of page full of zeroes, but
upon entry to kerne cvan be expected
to hold the parameter list and possible
INTRD information.
These are used in the local defines below.
*/
/* Virtual addresses for the BOOTP image. Note that this includes the
bootstrapper code as well as the compressed kernel image, and
possibly the INITRD image.
Oh, and do NOT forget the STACK, which appears to be placed virtually
beyond the end of the loaded image.
*/
#define V_BOOT_IMAGE_START BOOT_ADDR
#define V_BOOT_IMAGE_END SP_on_entry
/* Virtual addresses for just the bootstrapper part of the BOOTP image. */
#define V_BOOTSTRAPPER_START BOOT_ADDR
#define V_BOOTSTRAPPER_END KERNEL_ORIGIN
/* Virtual addresses for just the data part of the BOOTP
image. This may also include the INITRD image, but always
includes the STACK.
*/
#define V_DATA_START KERNEL_ORIGIN
#define V_INITRD_START (KERNEL_ORIGIN + KERNEL_Z_SIZE)
#define V_INTRD_END (V_INITRD_START + REAL_INITRD_SIZE)
#define V_DATA_END V_BOOT_IMAGE_END
/* KSEG addresses for the uncompressed kernel.
Note that the end address includes workspace for the decompression.
Note also that the DATA_START address is ZERO_PGE, to which we write
just before jumping to the kernel image at START_ADDR.
*/
#define K_KERNEL_DATA_START ZERO_PGE
#define K_KERNEL_IMAGE_START START_ADDR
#define K_KERNEL_IMAGE_END (START_ADDR + KERNEL_SIZE)
/* Define to where we may have to decompress the kernel image, before
we move it to the final position, in case of overlap. This will be
above the final position of the kernel.
Regardless of overlap, we move the INITRD image to the end of this
copy area, because there needs to be a buffer area after the kernel
for "bootmem" anyway.
*/
#define K_COPY_IMAGE_START NEXT_PAGE(K_KERNEL_IMAGE_END)
/* Reserve one page below INITRD for the new stack. */
#define K_INITRD_START \
NEXT_PAGE(K_COPY_IMAGE_START + KERNEL_SIZE + PAGE_SIZE)
#define K_COPY_IMAGE_END \
(K_INITRD_START + REAL_INITRD_SIZE + MALLOC_AREA_SIZE)
#define K_COPY_IMAGE_SIZE \
NEXT_PAGE(K_COPY_IMAGE_END - K_COPY_IMAGE_START)
void
start_kernel(void)
{
int must_move = 0;
/* Initialize these for the decompression-in-place situation,
which is the smallest amount of work and most likely to
occur when using the normal START_ADDR of the kernel
(currently set to 16MB, to clear all console code.
*/
unsigned long uncompressed_image_start = K_KERNEL_IMAGE_START;
unsigned long uncompressed_image_end = K_KERNEL_IMAGE_END;
unsigned long initrd_image_start = K_INITRD_START;
/*
* Note that this crufty stuff with static and envval
* and envbuf is because:
*
* 1. Frequently, the stack is short, and we don't want to overrun;
* 2. Frequently the stack is where we are going to copy the kernel to;
* 3. A certain SRM console required the GET_ENV output to stack.
* ??? A comment in the aboot sources indicates that the GET_ENV
* destination must be quadword aligned. Might this explain the
* behaviour, rather than requiring output to the stack, which
* seems rather far-fetched.
*/
static long nbytes;
static char envval[256] __attribute__((aligned(8)));
register unsigned long asm_sp asm("30");
SP_on_entry = asm_sp;
srm_printk("Linux/Alpha BOOTPZ Loader for Linux " UTS_RELEASE "\n");
/* Validity check the HWRPB. */
if (INIT_HWRPB->pagesize != 8192) {
srm_printk("Expected 8kB pages, got %ldkB\n",
INIT_HWRPB->pagesize >> 10);
return;
}
if (INIT_HWRPB->vptb != (unsigned long) VPTB) {
srm_printk("Expected vptb at %p, got %p\n",
VPTB, (void *)INIT_HWRPB->vptb);
return;
}
/* PALcode (re)initialization. */
pal_init();
/* Get the parameter list from the console environment variable. */
nbytes = callback_getenv(ENV_BOOTED_OSFLAGS, envval, sizeof(envval));
if (nbytes < 0 || nbytes >= sizeof(envval)) {
nbytes = 0;
}
envval[nbytes] = '\0';
#ifdef DEBUG_ADDRESSES
srm_printk("START_ADDR 0x%lx\n", START_ADDR);
srm_printk("KERNEL_ORIGIN 0x%lx\n", KERNEL_ORIGIN);
srm_printk("KERNEL_SIZE 0x%x\n", KERNEL_SIZE);
srm_printk("KERNEL_Z_SIZE 0x%x\n", KERNEL_Z_SIZE);
#endif
/* Since all the SRM consoles load the BOOTP image at virtual
* 0x20000000, we have to ensure that the physical memory
* pages occupied by that image do NOT overlap the physical
* address range where the kernel wants to be run. This
* causes real problems when attempting to cdecompress the
* former into the latter... :-(
*
* So, we may have to decompress/move the kernel/INITRD image
* virtual-to-physical someplace else first before moving
* kernel /INITRD to their final resting places... ;-}
*
* Sigh...
*/
/* First, check to see if the range of addresses occupied by
the bootstrapper part of the BOOTP image include any of the
physical pages into which the kernel will be placed for
execution.
We only need check on the final kernel image range, since we
will put the INITRD someplace that we can be sure is not
in conflict.
*/
if (check_range(V_BOOTSTRAPPER_START, V_BOOTSTRAPPER_END,
K_KERNEL_DATA_START, K_KERNEL_IMAGE_END))
{
srm_printk("FATAL ERROR: overlap of bootstrapper code\n");
__halt();
}
/* Next, check to see if the range of addresses occupied by
the compressed kernel/INITRD/stack portion of the BOOTP
image include any of the physical pages into which the
decompressed kernel or the INITRD will be placed for
execution.
*/
if (check_range(V_DATA_START, V_DATA_END,
K_KERNEL_IMAGE_START, K_COPY_IMAGE_END))
{
#ifdef DEBUG_ADDRESSES
srm_printk("OVERLAP: cannot decompress in place\n");
#endif
uncompressed_image_start = K_COPY_IMAGE_START;
uncompressed_image_end = K_COPY_IMAGE_END;
must_move = 1;
/* Finally, check to see if the range of addresses
occupied by the compressed kernel/INITRD part of
the BOOTP image include any of the physical pages
into which that part is to be copied for
decompression.
*/
while (check_range(V_DATA_START, V_DATA_END,
uncompressed_image_start,
uncompressed_image_end))
{
#if 0
uncompressed_image_start += K_COPY_IMAGE_SIZE;
uncompressed_image_end += K_COPY_IMAGE_SIZE;
initrd_image_start += K_COPY_IMAGE_SIZE;
#else
/* Keep as close as possible to end of BOOTP image. */
uncompressed_image_start += PAGE_SIZE;
uncompressed_image_end += PAGE_SIZE;
initrd_image_start += PAGE_SIZE;
#endif
}
}
srm_printk("Starting to load the kernel with args '%s'\n", envval);
#ifdef DEBUG_ADDRESSES
srm_printk("Decompressing the kernel...\n"
"...from 0x%lx to 0x%lx size 0x%x\n",
V_DATA_START,
uncompressed_image_start,
KERNEL_SIZE);
#endif
decompress_kernel((void *)uncompressed_image_start,
(void *)V_DATA_START,
KERNEL_SIZE, KERNEL_Z_SIZE);
/*
* Now, move things to their final positions, if/as required.
*/
#ifdef INITRD_IMAGE_SIZE
/* First, we always move the INITRD image, if present. */
#ifdef DEBUG_ADDRESSES
srm_printk("Moving the INITRD image...\n"
" from 0x%lx to 0x%lx size 0x%x\n",
V_INITRD_START,
initrd_image_start,
INITRD_IMAGE_SIZE);
#endif
memcpy((void *)initrd_image_start, (void *)V_INITRD_START,
INITRD_IMAGE_SIZE);
#endif /* INITRD_IMAGE_SIZE */
/* Next, we may have to move the uncompressed kernel to the
final destination.
*/
if (must_move) {
#ifdef DEBUG_ADDRESSES
srm_printk("Moving the uncompressed kernel...\n"
"...from 0x%lx to 0x%lx size 0x%x\n",
uncompressed_image_start,
K_KERNEL_IMAGE_START,
(unsigned)KERNEL_SIZE);
#endif
/*
* Move the stack to a safe place to ensure it won't be
* overwritten by kernel image.
*/
move_stack(initrd_image_start - PAGE_SIZE);
memcpy((void *)K_KERNEL_IMAGE_START,
(void *)uncompressed_image_start, KERNEL_SIZE);
}
/* Clear the zero page, then move the argument list in. */
#ifdef DEBUG_LAST_STEPS
srm_printk("Preparing ZERO_PGE...\n");
#endif
memset((char*)ZERO_PGE, 0, PAGE_SIZE);
strcpy((char*)ZERO_PGE, envval);
#ifdef INITRD_IMAGE_SIZE
#ifdef DEBUG_LAST_STEPS
srm_printk("Preparing INITRD info...\n");
#endif
/* Finally, set the INITRD paramenters for the kernel. */
((long *)(ZERO_PGE+256))[0] = initrd_image_start;
((long *)(ZERO_PGE+256))[1] = INITRD_IMAGE_SIZE;
#endif /* INITRD_IMAGE_SIZE */
#ifdef DEBUG_LAST_STEPS
srm_printk("Doing 'runkernel()'...\n");
#endif
runkernel();
}
arch/alpha/boot/head.S
+123
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@@ -0,0 +1,123 @@
/*
* arch/alpha/boot/head.S
*
* initial bootloader stuff..
*/
#include <asm/system.h>
.set noreorder
.globl __start
.ent __start
__start:
br $29,2f
2: ldgp $29,0($29)
jsr $26,start_kernel
call_pal PAL_halt
.end __start
.align 5
.globl wrent
.ent wrent
wrent:
.prologue 0
call_pal PAL_wrent
ret ($26)
.end wrent
.align 5
.globl wrkgp
.ent wrkgp
wrkgp:
.prologue 0
call_pal PAL_wrkgp
ret ($26)
.end wrkgp
.align 5
.globl switch_to_osf_pal
.ent switch_to_osf_pal
switch_to_osf_pal:
subq $30,128,$30
.frame $30,128,$26
stq $26,0($30)
stq $1,8($30)
stq $2,16($30)
stq $3,24($30)
stq $4,32($30)
stq $5,40($30)
stq $6,48($30)
stq $7,56($30)
stq $8,64($30)
stq $9,72($30)
stq $10,80($30)
stq $11,88($30)
stq $12,96($30)
stq $13,104($30)
stq $14,112($30)
stq $15,120($30)
.prologue 0
stq $30,0($17) /* save KSP in PCB */
bis $30,$30,$20 /* a4 = KSP */
br $17,1f
ldq $26,0($30)
ldq $1,8($30)
ldq $2,16($30)
ldq $3,24($30)
ldq $4,32($30)
ldq $5,40($30)
ldq $6,48($30)
ldq $7,56($30)
ldq $8,64($30)
ldq $9,72($30)
ldq $10,80($30)
ldq $11,88($30)
ldq $12,96($30)
ldq $13,104($30)
ldq $14,112($30)
ldq $15,120($30)
addq $30,128,$30
ret ($26)
1: call_pal PAL_swppal
.end switch_to_osf_pal
.align 3
.globl tbi
.ent tbi
tbi:
.prologue 0
call_pal PAL_tbi
ret ($26)
.end tbi
.align 3
.globl halt
.ent halt
halt:
.prologue 0
call_pal PAL_halt
.end halt
/* $16 - new stack page */
.align 3
.globl move_stack
.ent move_stack
move_stack:
.prologue 0
lda $0, 0x1fff($31)
and $0, $30, $1 /* Stack offset */
or $1, $16, $16 /* New stack pointer */
mov $30, $1
mov $16, $2
1: ldq $3, 0($1) /* Move the stack */
addq $1, 8, $1
stq $3, 0($2)
and $0, $1, $4
addq $2, 8, $2
bne $4, 1b
mov $16, $30
ret ($26)
.end move_stack
arch/alpha/boot/main.c
+191
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@@ -0,0 +1,191 @@
/*
* arch/alpha/boot/main.c
*
* Copyright (C) 1994, 1995 Linus Torvalds
*
* This file is the bootloader for the Linux/AXP kernel
*/
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/version.h>
#include <linux/mm.h>
#include <asm/system.h>
#include <asm/console.h>
#include <asm/hwrpb.h>
#include <asm/pgtable.h>
#include <stdarg.h>
#include "ksize.h"
extern int vsprintf(char *, const char *, va_list);
extern unsigned long switch_to_osf_pal(unsigned long nr,
struct pcb_struct * pcb_va, struct pcb_struct * pcb_pa,
unsigned long *vptb);
struct hwrpb_struct *hwrpb = INIT_HWRPB;
static struct pcb_struct pcb_va[1];
/*
* Find a physical address of a virtual object..
*
* This is easy using the virtual page table address.
*/
static inline void *
find_pa(unsigned long *vptb, void *ptr)
{
unsigned long address = (unsigned long) ptr;
unsigned long result;
result = vptb[address >> 13];
result >>= 32;
result <<= 13;
result |= address & 0x1fff;
return (void *) result;
}
/*
* This function moves into OSF/1 pal-code, and has a temporary
* PCB for that. The kernel proper should replace this PCB with
* the real one as soon as possible.
*
* The page table muckery in here depends on the fact that the boot
* code has the L1 page table identity-map itself in the second PTE
* in the L1 page table. Thus the L1-page is virtually addressable
* itself (through three levels) at virtual address 0x200802000.
*/
#define VPTB ((unsigned long *) 0x200000000)
#define L1 ((unsigned long *) 0x200802000)
void
pal_init(void)
{
unsigned long i, rev;
struct percpu_struct * percpu;
struct pcb_struct * pcb_pa;
/* Create the dummy PCB. */
pcb_va->ksp = 0;
pcb_va->usp = 0;
pcb_va->ptbr = L1[1] >> 32;
pcb_va->asn = 0;
pcb_va->pcc = 0;
pcb_va->unique = 0;
pcb_va->flags = 1;
pcb_va->res1 = 0;
pcb_va->res2 = 0;
pcb_pa = find_pa(VPTB, pcb_va);
/*
* a0 = 2 (OSF)
* a1 = return address, but we give the asm the vaddr of the PCB
* a2 = physical addr of PCB
* a3 = new virtual page table pointer
* a4 = KSP (but the asm sets it)
*/
srm_printk("Switching to OSF PAL-code .. ");
i = switch_to_osf_pal(2, pcb_va, pcb_pa, VPTB);
if (i) {
srm_printk("failed, code %ld\n", i);
__halt();
}
percpu = (struct percpu_struct *)
(INIT_HWRPB->processor_offset + (unsigned long) INIT_HWRPB);
rev = percpu->pal_revision = percpu->palcode_avail[2];
srm_printk("Ok (rev %lx)\n", rev);
tbia(); /* do it directly in case we are SMP */
}
static inline long openboot(void)
{
char bootdev[256];
long result;
result = callback_getenv(ENV_BOOTED_DEV, bootdev, 255);
if (result < 0)
return result;
return callback_open(bootdev, result & 255);
}
static inline long close(long dev)
{
return callback_close(dev);
}
static inline long load(long dev, unsigned long addr, unsigned long count)
{
char bootfile[256];
extern char _end;
long result, boot_size = &_end - (char *) BOOT_ADDR;
result = callback_getenv(ENV_BOOTED_FILE, bootfile, 255);
if (result < 0)
return result;
result &= 255;
bootfile[result] = '\0';
if (result)
srm_printk("Boot file specification (%s) not implemented\n",
bootfile);
return callback_read(dev, count, addr, boot_size/512 + 1);
}
/*
* Start the kernel.
*/
static void runkernel(void)
{
__asm__ __volatile__(
"bis %1,%1,$30\n\t"
"bis %0,%0,$26\n\t"
"ret ($26)"
: /* no outputs: it doesn't even return */
: "r" (START_ADDR),
"r" (PAGE_SIZE + INIT_STACK));
}
void start_kernel(void)
{
long i;
long dev;
int nbytes;
char envval[256];
srm_printk("Linux/AXP bootloader for Linux " UTS_RELEASE "\n");
if (INIT_HWRPB->pagesize != 8192) {
srm_printk("Expected 8kB pages, got %ldkB\n", INIT_HWRPB->pagesize >> 10);
return;
}
pal_init();
dev = openboot();
if (dev < 0) {
srm_printk("Unable to open boot device: %016lx\n", dev);
return;
}
dev &= 0xffffffff;
srm_printk("Loading vmlinux ...");
i = load(dev, START_ADDR, KERNEL_SIZE);
close(dev);
if (i != KERNEL_SIZE) {
srm_printk("Failed (%lx)\n", i);
return;
}
nbytes = callback_getenv(ENV_BOOTED_OSFLAGS, envval, sizeof(envval));
if (nbytes < 0) {
nbytes = 0;
}
envval[nbytes] = '\0';
strcpy((char*)ZERO_PGE, envval);
srm_printk(" Ok\nNow booting the kernel\n");
runkernel();
for (i = 0 ; i < 0x100000000 ; i++)
/* nothing */;
__halt();
}
arch/alpha/boot/misc.c
+207
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@@ -0,0 +1,207 @@
/*
* misc.c
*
* This is a collection of several routines from gzip-1.0.3
* adapted for Linux.
*
* malloc by Hannu Savolainen 1993 and Matthias Urlichs 1994
*
* Modified for ARM Linux by Russell King
*
* Nicolas Pitre <nico@visuaide.com> 1999/04/14 :
* For this code to run directly from Flash, all constant variables must
* be marked with 'const' and all other variables initialized at run-time
* only. This way all non constant variables will end up in the bss segment,
* which should point to addresses in RAM and cleared to 0 on start.
* This allows for a much quicker boot time.
*
* Modified for Alpha, from the ARM version, by Jay Estabrook 2003.
*/
#include <linux/kernel.h>
#include <asm/uaccess.h>
#define memzero(s,n) memset ((s),0,(n))
#define puts srm_printk
extern long srm_printk(const char *, ...)
__attribute__ ((format (printf, 1, 2)));
/*
* gzip delarations
*/
#define OF(args) args
#define STATIC static
typedef unsigned char uch;
typedef unsigned short ush;
typedef unsigned long ulg;
#define WSIZE 0x8000 /* Window size must be at least 32k, */
/* and a power of two */
static uch *inbuf; /* input buffer */
static uch *window; /* Sliding window buffer */
static unsigned insize; /* valid bytes in inbuf */
static unsigned inptr; /* index of next byte to be processed in inbuf */
static unsigned outcnt; /* bytes in output buffer */
/* gzip flag byte */
#define ASCII_FLAG 0x01 /* bit 0 set: file probably ascii text */
#define CONTINUATION 0x02 /* bit 1 set: continuation of multi-part gzip file */
#define EXTRA_FIELD 0x04 /* bit 2 set: extra field present */
#define ORIG_NAME 0x08 /* bit 3 set: original file name present */
#define COMMENT 0x10 /* bit 4 set: file comment present */
#define ENCRYPTED 0x20 /* bit 5 set: file is encrypted */
#define RESERVED 0xC0 /* bit 6,7: reserved */
#define get_byte() (inptr < insize ? inbuf[inptr++] : fill_inbuf())
/* Diagnostic functions */
#ifdef DEBUG
# define Assert(cond,msg) {if(!(cond)) error(msg);}
# define Trace(x) fprintf x
# define Tracev(x) {if (verbose) fprintf x ;}
# define Tracevv(x) {if (verbose>1) fprintf x ;}
# define Tracec(c,x) {if (verbose && (c)) fprintf x ;}
# define Tracecv(c,x) {if (verbose>1 && (c)) fprintf x ;}
#else
# define Assert(cond,msg)
# define Trace(x)
# define Tracev(x)
# define Tracevv(x)
# define Tracec(c,x)
# define Tracecv(c,x)
#endif
static int fill_inbuf(void);
static void flush_window(void);
static void error(char *m);
static void gzip_mark(void **);
static void gzip_release(void **);
static char *input_data;
static int input_data_size;
static uch *output_data;
static ulg output_ptr;
static ulg bytes_out;
static void *malloc(int size);
static void free(void *where);
static void error(char *m);
static void gzip_mark(void **);
static void gzip_release(void **);
extern int end;
static ulg free_mem_ptr;
static ulg free_mem_ptr_end;
#define HEAP_SIZE 0x2000
#include "../../../lib/inflate.c"
static void *malloc(int size)
{
void *p;
if (size <0) error("Malloc error");
if (free_mem_ptr <= 0) error("Memory error");
free_mem_ptr = (free_mem_ptr + 3) & ~3; /* Align */
p = (void *)free_mem_ptr;
free_mem_ptr += size;
if (free_mem_ptr >= free_mem_ptr_end)
error("Out of memory");
return p;
}
static void free(void *where)
{ /* gzip_mark & gzip_release do the free */
}
static void gzip_mark(void **ptr)
{
*ptr = (void *) free_mem_ptr;
}
static void gzip_release(void **ptr)
{
free_mem_ptr = (long) *ptr;
}
/* ===========================================================================
* Fill the input buffer. This is called only when the buffer is empty
* and at least one byte is really needed.
*/
int fill_inbuf(void)
{
if (insize != 0)
error("ran out of input data");
inbuf = input_data;
insize = input_data_size;
inptr = 1;
return inbuf[0];
}
/* ===========================================================================
* Write the output window window[0..outcnt-1] and update crc and bytes_out.
* (Used for the decompressed data only.)
*/
void flush_window(void)
{
ulg c = crc;
unsigned n;
uch *in, *out, ch;
in = window;
out = &output_data[output_ptr];
for (n = 0; n < outcnt; n++) {
ch = *out++ = *in++;
c = crc_32_tab[((int)c ^ ch) & 0xff] ^ (c >> 8);
}
crc = c;
bytes_out += (ulg)outcnt;
output_ptr += (ulg)outcnt;
outcnt = 0;
/* puts("."); */
}
static void error(char *x)
{
puts("\n\n");
puts(x);
puts("\n\n -- System halted");
while(1); /* Halt */
}
unsigned int
decompress_kernel(void *output_start,
void *input_start,
size_t ksize,
size_t kzsize)
{
output_data = (uch *)output_start;
input_data = (uch *)input_start;
input_data_size = kzsize; /* use compressed size */
/* FIXME FIXME FIXME */
free_mem_ptr = (ulg)output_start + ksize;
free_mem_ptr_end = (ulg)output_start + ksize + 0x200000;
/* FIXME FIXME FIXME */
/* put in temp area to reduce initial footprint */
window = malloc(WSIZE);
makecrc();
/* puts("Uncompressing Linux..."); */
gunzip();
/* puts(" done, booting the kernel.\n"); */
return output_ptr;
}
arch/alpha/boot/tools/mkbb.c
+151
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@@ -0,0 +1,151 @@
/* This utility makes a bootblock suitable for the SRM console/miniloader */
/* Usage:
* mkbb <device> <lxboot>
*
* Where <device> is the name of the device to install the bootblock on,
* and <lxboot> is the name of a bootblock to merge in. This bootblock
* contains the offset and size of the bootloader. It must be exactly
* 512 bytes long.
*/
#include <fcntl.h>
#include <unistd.h>
#include <stdio.h>
/* Minimal definition of disklabel, so we don't have to include
* asm/disklabel.h (confuses make)
*/
#ifndef MAXPARTITIONS
#define MAXPARTITIONS 8 /* max. # of partitions */
#endif
#ifndef u8
#define u8 unsigned char
#endif
#ifndef u16
#define u16 unsigned short
#endif
#ifndef u32
#define u32 unsigned int
#endif
struct disklabel {
u32 d_magic; /* must be DISKLABELMAGIC */
u16 d_type, d_subtype;
u8 d_typename[16];
u8 d_packname[16];
u32 d_secsize;
u32 d_nsectors;
u32 d_ntracks;
u32 d_ncylinders;
u32 d_secpercyl;
u32 d_secprtunit;
u16 d_sparespertrack;
u16 d_sparespercyl;
u32 d_acylinders;
u16 d_rpm, d_interleave, d_trackskew, d_cylskew;
u32 d_headswitch, d_trkseek, d_flags;
u32 d_drivedata[5];
u32 d_spare[5];
u32 d_magic2; /* must be DISKLABELMAGIC */
u16 d_checksum;
u16 d_npartitions;
u32 d_bbsize, d_sbsize;
struct d_partition {
u32 p_size;
u32 p_offset;
u32 p_fsize;
u8 p_fstype;
u8 p_frag;
u16 p_cpg;
} d_partitions[MAXPARTITIONS];
};
typedef union __bootblock {
struct {
char __pad1[64];
struct disklabel __label;
} __u1;
struct {
unsigned long __pad2[63];
unsigned long __checksum;
} __u2;
char bootblock_bytes[512];
unsigned long bootblock_quadwords[64];
} bootblock;
#define bootblock_label __u1.__label
#define bootblock_checksum __u2.__checksum
main(int argc, char ** argv)
{
bootblock bootblock_from_disk;
bootblock bootloader_image;
int dev, fd;
int i;
int nread;
/* Make sure of the arg count */
if(argc != 3) {
fprintf(stderr, "Usage: %s device lxboot\n", argv[0]);
exit(0);
}
/* First, open the device and make sure it's accessible */
dev = open(argv[1], O_RDWR);
if(dev < 0) {
perror(argv[1]);
exit(0);
}
/* Now open the lxboot and make sure it's reasonable */
fd = open(argv[2], O_RDONLY);
if(fd < 0) {
perror(argv[2]);
close(dev);
exit(0);
}
/* Read in the lxboot */
nread = read(fd, &bootloader_image, sizeof(bootblock));
if(nread != sizeof(bootblock)) {
perror("lxboot read");
fprintf(stderr, "expected %d, got %d\n", sizeof(bootblock), nread);
exit(0);
}
/* Read in the bootblock from disk. */
nread = read(dev, &bootblock_from_disk, sizeof(bootblock));
if(nread != sizeof(bootblock)) {
perror("bootblock read");
fprintf(stderr, "expected %d, got %d\n", sizeof(bootblock), nread);
exit(0);
}
/* Swap the bootblock's disklabel into the bootloader */
bootloader_image.bootblock_label = bootblock_from_disk.bootblock_label;
/* Calculate the bootblock checksum */
bootloader_image.bootblock_checksum = 0;
for(i = 0; i < 63; i++) {
bootloader_image.bootblock_checksum +=
bootloader_image.bootblock_quadwords[i];
}
/* Write the whole thing out! */
lseek(dev, 0L, SEEK_SET);
if(write(dev, &bootloader_image, sizeof(bootblock)) != sizeof(bootblock)) {
perror("bootblock write");
exit(0);
}
close(fd);
close(dev);
exit(0);
}
arch/alpha/boot/tools/objstrip.c
+281
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@@ -0,0 +1,281 @@
/*
* arch/alpha/boot/tools/objstrip.c
*
* Strip the object file headers/trailers from an executable (ELF or ECOFF).
*
* Copyright (C) 1996 David Mosberger-Tang.
*/
/*
* Converts an ECOFF or ELF object file into a bootable file. The
* object file must be a OMAGIC file (i.e., data and bss follow immediately
* behind the text). See DEC "Assembly Language Programmer's Guide"
* documentation for details. The SRM boot process is documented in
* the Alpha AXP Architecture Reference Manual, Second Edition by
* Richard L. Sites and Richard T. Witek.
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/fcntl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <linux/a.out.h>
#include <linux/coff.h>
#include <linux/param.h>
#include <linux/string.h>
#ifdef __ELF__
# include <linux/elf.h>
#endif
/* bootfile size must be multiple of BLOCK_SIZE: */
#define BLOCK_SIZE 512
const char * prog_name;
void
usage (void)
{
fprintf(stderr,
"usage: %s [-v] -p file primary\n"
" %s [-vb] file [secondary]\n", prog_name, prog_name);
exit(1);
}
int
main (int argc, char *argv[])
{
size_t nwritten, tocopy, n, mem_size, fil_size, pad = 0;
int fd, ofd, i, j, verbose = 0, primary = 0;
char buf[8192], *inname;
struct exec * aout; /* includes file & aout header */
long offset;
#ifdef __ELF__
struct elfhdr *elf;
struct elf_phdr *elf_phdr; /* program header */
unsigned long long e_entry;
#endif
prog_name = argv[0];
for (i = 1; i < argc && argv[i][0] == '-'; ++i) {
for (j = 1; argv[i][j]; ++j) {
switch (argv[i][j]) {
case 'v':
verbose = ~verbose;
break;
case 'b':
pad = BLOCK_SIZE;
break;
case 'p':
primary = 1; /* make primary bootblock */
break;
}
}
}
if (i >= argc) {
usage();
}
inname = argv[i++];
fd = open(inname, O_RDONLY);
if (fd == -1) {
perror("open");
exit(1);
}
ofd = 1;
if (i < argc) {
ofd = open(argv[i++], O_WRONLY | O_CREAT | O_TRUNC, 0666);
if (fd == -1) {
perror("open");
exit(1);
}
}
if (primary) {
/* generate bootblock for primary loader */
unsigned long bb[64], sum = 0;
struct stat st;
off_t size;
int i;
if (ofd == 1) {
usage();
}
if (fstat(fd, &st) == -1) {
perror("fstat");
exit(1);
}
size = (st.st_size + BLOCK_SIZE - 1) & ~(BLOCK_SIZE - 1);
memset(bb, 0, sizeof(bb));
strcpy((char *) bb, "Linux SRM bootblock");
bb[60] = size / BLOCK_SIZE; /* count */
bb[61] = 1; /* starting sector # */
bb[62] = 0; /* flags---must be 0 */
for (i = 0; i < 63; ++i) {
sum += bb[i];
}
bb[63] = sum;
if (write(ofd, bb, sizeof(bb)) != sizeof(bb)) {
perror("boot-block write");
exit(1);
}
printf("%lu\n", size);
return 0;
}
/* read and inspect exec header: */
if (read(fd, buf, sizeof(buf)) < 0) {
perror("read");
exit(1);
}
#ifdef __ELF__
elf = (struct elfhdr *) buf;
if (elf->e_ident[0] == 0x7f && strncmp(elf->e_ident + 1, "ELF", 3) == 0) {
if (elf->e_type != ET_EXEC) {
fprintf(stderr, "%s: %s is not an ELF executable\n",
prog_name, inname);
exit(1);
}
if (!elf_check_arch(elf)) {
fprintf(stderr, "%s: is not for this processor (e_machine=%d)\n",
prog_name, elf->e_machine);
exit(1);
}
if (elf->e_phnum != 1) {
fprintf(stderr,
"%s: %d program headers (forgot to link with -N?)\n",
prog_name, elf->e_phnum);
}
e_entry = elf->e_entry;
lseek(fd, elf->e_phoff, SEEK_SET);
if (read(fd, buf, sizeof(*elf_phdr)) != sizeof(*elf_phdr)) {
perror("read");
exit(1);
}
elf_phdr = (struct elf_phdr *) buf;
offset = elf_phdr->p_offset;
mem_size = elf_phdr->p_memsz;
fil_size = elf_phdr->p_filesz;
/* work around ELF bug: */
if (elf_phdr->p_vaddr < e_entry) {
unsigned long delta = e_entry - elf_phdr->p_vaddr;
offset += delta;
mem_size -= delta;
fil_size -= delta;
elf_phdr->p_vaddr += delta;
}
if (verbose) {
fprintf(stderr, "%s: extracting %#016lx-%#016lx (at %lx)\n",
prog_name, (long) elf_phdr->p_vaddr,
elf_phdr->p_vaddr + fil_size, offset);
}
} else
#endif
{
aout = (struct exec *) buf;
if (!(aout->fh.f_flags & COFF_F_EXEC)) {
fprintf(stderr, "%s: %s is not in executable format\n",
prog_name, inname);
exit(1);
}
if (aout->fh.f_opthdr != sizeof(aout->ah)) {
fprintf(stderr, "%s: %s has unexpected optional header size\n",
prog_name, inname);
exit(1);
}
if (N_MAGIC(*aout) != OMAGIC) {
fprintf(stderr, "%s: %s is not an OMAGIC file\n",
prog_name, inname);
exit(1);
}
offset = N_TXTOFF(*aout);
fil_size = aout->ah.tsize + aout->ah.dsize;
mem_size = fil_size + aout->ah.bsize;
if (verbose) {
fprintf(stderr, "%s: extracting %#016lx-%#016lx (at %lx)\n",
prog_name, aout->ah.text_start,
aout->ah.text_start + fil_size, offset);
}
}
if (lseek(fd, offset, SEEK_SET) != offset) {
perror("lseek");
exit(1);
}
if (verbose) {
fprintf(stderr, "%s: copying %lu byte from %s\n",
prog_name, (unsigned long) fil_size, inname);
}
tocopy = fil_size;
while (tocopy > 0) {
n = tocopy;
if (n > sizeof(buf)) {
n = sizeof(buf);
}
tocopy -= n;
if ((size_t) read(fd, buf, n) != n) {
perror("read");
exit(1);
}
do {
nwritten = write(ofd, buf, n);
if ((ssize_t) nwritten == -1) {
perror("write");
exit(1);
}
n -= nwritten;
} while (n > 0);
}
if (pad) {
mem_size = ((mem_size + pad - 1) / pad) * pad;
}
tocopy = mem_size - fil_size;
if (tocopy > 0) {
fprintf(stderr,
"%s: zero-filling bss and aligning to %lu with %lu bytes\n",
prog_name, pad, (unsigned long) tocopy);
memset(buf, 0x00, sizeof(buf));
do {
n = tocopy;
if (n > sizeof(buf)) {
n = sizeof(buf);
}
nwritten = write(ofd, buf, n);
if ((ssize_t) nwritten == -1) {
perror("write");
exit(1);
}
tocopy -= nwritten;
} while (tocopy > 0);
}
return 0;
}
arch/alpha/defconfig
+927
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File diff suppressed because it is too large Load Diff
arch/alpha/kernel/Makefile
+104
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@@ -0,0 +1,104 @@
#
# Makefile for the linux kernel.
#
extra-y := head.o vmlinux.lds
EXTRA_AFLAGS := $(CFLAGS)
EXTRA_CFLAGS := -Werror -Wno-sign-compare
obj-y := entry.o traps.o process.o init_task.o osf_sys.o irq.o \
irq_alpha.o signal.o setup.o ptrace.o time.o semaphore.o \
alpha_ksyms.o systbls.o err_common.o io.o
obj-$(CONFIG_VGA_HOSE) += console.o
obj-$(CONFIG_SMP) += smp.o
obj-$(CONFIG_PCI) += pci.o pci_iommu.o
obj-$(CONFIG_SRM_ENV) += srm_env.o
obj-$(CONFIG_MODULES) += module.o
ifdef CONFIG_ALPHA_GENERIC
obj-y += core_apecs.o core_cia.o core_irongate.o core_lca.o \
core_mcpcia.o core_polaris.o core_t2.o \
core_tsunami.o
obj-y += sys_alcor.o sys_cabriolet.o sys_dp264.o sys_eb64p.o sys_eiger.o \
sys_jensen.o sys_miata.o sys_mikasa.o sys_nautilus.o \
sys_noritake.o sys_rawhide.o sys_ruffian.o sys_rx164.o \
sys_sable.o sys_sio.o sys_sx164.o sys_takara.o
ifndef CONFIG_ALPHA_LEGACY_START_ADDRESS
obj-y += core_marvel.o core_titan.o core_wildfire.o
obj-y += sys_marvel.o sys_titan.o sys_wildfire.o
obj-y += err_ev7.o err_titan.o err_marvel.o
endif
obj-y += irq_pyxis.o irq_i8259.o irq_srm.o
obj-y += err_ev6.o
obj-y += es1888.o smc37c669.o smc37c93x.o ns87312.o gct.o
obj-y += srmcons.o
else
# Misc support
obj-$(CONFIG_ALPHA_SRM) += srmcons.o
# Core logic support
obj-$(CONFIG_ALPHA_APECS) += core_apecs.o
obj-$(CONFIG_ALPHA_CIA) += core_cia.o
obj-$(CONFIG_ALPHA_IRONGATE) += core_irongate.o
obj-$(CONFIG_ALPHA_LCA) += core_lca.o
obj-$(CONFIG_ALPHA_MARVEL) += core_marvel.o gct.o
obj-$(CONFIG_ALPHA_MCPCIA) += core_mcpcia.o
obj-$(CONFIG_ALPHA_POLARIS) += core_polaris.o
obj-$(CONFIG_ALPHA_T2) += core_t2.o
obj-$(CONFIG_ALPHA_TSUNAMI) += core_tsunami.o
obj-$(CONFIG_ALPHA_TITAN) += core_titan.o
obj-$(CONFIG_ALPHA_WILDFIRE) += core_wildfire.o
# Board support
obj-$(CONFIG_ALPHA_ALCOR) += sys_alcor.o irq_i8259.o irq_srm.o
obj-$(CONFIG_ALPHA_CABRIOLET) += sys_cabriolet.o irq_i8259.o irq_srm.o \
ns87312.o
obj-$(CONFIG_ALPHA_EB164) += sys_cabriolet.o irq_i8259.o irq_srm.o \
ns87312.o
obj-$(CONFIG_ALPHA_EB66P) += sys_cabriolet.o irq_i8259.o irq_srm.o \
ns87312.o
obj-$(CONFIG_ALPHA_LX164) += sys_cabriolet.o irq_i8259.o irq_srm.o \
smc37c93x.o
obj-$(CONFIG_ALPHA_PC164) += sys_cabriolet.o irq_i8259.o irq_srm.o \
smc37c93x.o
obj-$(CONFIG_ALPHA_DP264) += sys_dp264.o irq_i8259.o es1888.o smc37c669.o
obj-$(CONFIG_ALPHA_SHARK) += sys_dp264.o irq_i8259.o es1888.o smc37c669.o
obj-$(CONFIG_ALPHA_TITAN) += sys_titan.o irq_i8259.o smc37c669.o
obj-$(CONFIG_ALPHA_EB64P) += sys_eb64p.o irq_i8259.o
obj-$(CONFIG_ALPHA_EB66) += sys_eb64p.o irq_i8259.o
obj-$(CONFIG_ALPHA_EIGER) += sys_eiger.o irq_i8259.o
obj-$(CONFIG_ALPHA_JENSEN) += sys_jensen.o pci-noop.o irq_i8259.o
obj-$(CONFIG_ALPHA_MARVEL) += sys_marvel.o
obj-$(CONFIG_ALPHA_MIATA) += sys_miata.o irq_pyxis.o irq_i8259.o \
es1888.o smc37c669.o
obj-$(CONFIG_ALPHA_MIKASA) += sys_mikasa.o irq_i8259.o irq_srm.o
obj-$(CONFIG_ALPHA_NAUTILUS) += sys_nautilus.o irq_i8259.o irq_srm.o
obj-$(CONFIG_ALPHA_NORITAKE) += sys_noritake.o irq_i8259.o
obj-$(CONFIG_ALPHA_RAWHIDE) += sys_rawhide.o irq_i8259.o
obj-$(CONFIG_ALPHA_RUFFIAN) += sys_ruffian.o irq_pyxis.o irq_i8259.o
obj-$(CONFIG_ALPHA_RX164) += sys_rx164.o irq_i8259.o
obj-$(CONFIG_ALPHA_SABLE) += sys_sable.o
obj-$(CONFIG_ALPHA_LYNX) += sys_sable.o
obj-$(CONFIG_ALPHA_BOOK1) += sys_sio.o irq_i8259.o irq_srm.o ns87312.o
obj-$(CONFIG_ALPHA_AVANTI) += sys_sio.o irq_i8259.o irq_srm.o ns87312.o
obj-$(CONFIG_ALPHA_NONAME) += sys_sio.o irq_i8259.o irq_srm.o ns87312.o
obj-$(CONFIG_ALPHA_P2K) += sys_sio.o irq_i8259.o irq_srm.o ns87312.o
obj-$(CONFIG_ALPHA_XL) += sys_sio.o irq_i8259.o irq_srm.o ns87312.o
obj-$(CONFIG_ALPHA_SX164) += sys_sx164.o irq_pyxis.o irq_i8259.o \
irq_srm.o smc37c669.o
obj-$(CONFIG_ALPHA_TAKARA) += sys_takara.o irq_i8259.o ns87312.o
obj-$(CONFIG_ALPHA_WILDFIRE) += sys_wildfire.o irq_i8259.o
# Error support
obj-$(CONFIG_ALPHA_MARVEL) += err_ev7.o err_marvel.o
obj-$(CONFIG_ALPHA_NAUTILUS) += err_ev6.o
obj-$(CONFIG_ALPHA_TITAN) += err_ev6.o err_titan.o
endif # GENERIC
arch/alpha/kernel/alpha_ksyms.c
+235
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@@ -0,0 +1,235 @@
/*
* linux/arch/alpha/kernel/ksyms.c
*
* Export the alpha-specific functions that are needed for loadable
* modules.
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/string.h>
#include <linux/user.h>
#include <linux/elfcore.h>
#include <linux/socket.h>
#include <linux/syscalls.h>
#include <linux/in.h>
#include <linux/in6.h>
#include <linux/pci.h>
#include <linux/tty.h>
#include <linux/mm.h>
#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <asm/io.h>
#include <asm/console.h>
#include <asm/hwrpb.h>
#include <asm/uaccess.h>
#include <asm/processor.h>
#include <asm/checksum.h>
#include <linux/interrupt.h>
#include <asm/fpu.h>
#include <asm/irq.h>
#include <asm/machvec.h>
#include <asm/pgalloc.h>
#include <asm/semaphore.h>
#include <asm/tlbflush.h>
#include <asm/cacheflush.h>
#include <asm/vga.h>
#define __KERNEL_SYSCALLS__
#include <asm/unistd.h>
extern struct hwrpb_struct *hwrpb;
extern void dump_thread(struct pt_regs *, struct user *);
extern spinlock_t rtc_lock;
/* these are C runtime functions with special calling conventions: */
extern void __divl (void);
extern void __reml (void);
extern void __divq (void);
extern void __remq (void);
extern void __divlu (void);
extern void __remlu (void);
extern void __divqu (void);
extern void __remqu (void);
EXPORT_SYMBOL(alpha_mv);
EXPORT_SYMBOL(enable_irq);
EXPORT_SYMBOL(disable_irq);
EXPORT_SYMBOL(disable_irq_nosync);
EXPORT_SYMBOL(probe_irq_mask);
EXPORT_SYMBOL(screen_info);
EXPORT_SYMBOL(perf_irq);
EXPORT_SYMBOL(callback_getenv);
EXPORT_SYMBOL(callback_setenv);
EXPORT_SYMBOL(callback_save_env);
#ifdef CONFIG_ALPHA_GENERIC
EXPORT_SYMBOL(alpha_using_srm);
#endif /* CONFIG_ALPHA_GENERIC */
/* platform dependent support */
EXPORT_SYMBOL(strcat);
EXPORT_SYMBOL(strcmp);
EXPORT_SYMBOL(strcpy);
EXPORT_SYMBOL(strlen);
EXPORT_SYMBOL(strncmp);
EXPORT_SYMBOL(strncpy);
EXPORT_SYMBOL(strnlen);
EXPORT_SYMBOL(strncat);
EXPORT_SYMBOL(strstr);
EXPORT_SYMBOL(strpbrk);
EXPORT_SYMBOL(strchr);
EXPORT_SYMBOL(strrchr);
EXPORT_SYMBOL(memcmp);
EXPORT_SYMBOL(memmove);
EXPORT_SYMBOL(memscan);
EXPORT_SYMBOL(__memcpy);
EXPORT_SYMBOL(__memset);
EXPORT_SYMBOL(__memsetw);
EXPORT_SYMBOL(__constant_c_memset);
EXPORT_SYMBOL(copy_page);
EXPORT_SYMBOL(clear_page);
EXPORT_SYMBOL(__direct_map_base);
EXPORT_SYMBOL(__direct_map_size);
#ifdef CONFIG_PCI
EXPORT_SYMBOL(pci_alloc_consistent);
EXPORT_SYMBOL(pci_free_consistent);
EXPORT_SYMBOL(pci_map_single);
EXPORT_SYMBOL(pci_map_page);
EXPORT_SYMBOL(pci_unmap_single);
EXPORT_SYMBOL(pci_unmap_page);
EXPORT_SYMBOL(pci_map_sg);
EXPORT_SYMBOL(pci_unmap_sg);
EXPORT_SYMBOL(pci_dma_supported);
EXPORT_SYMBOL(pci_dac_dma_supported);
EXPORT_SYMBOL(pci_dac_page_to_dma);
EXPORT_SYMBOL(pci_dac_dma_to_page);
EXPORT_SYMBOL(pci_dac_dma_to_offset);
EXPORT_SYMBOL(alpha_gendev_to_pci);
#endif
EXPORT_SYMBOL(dma_set_mask);
EXPORT_SYMBOL(dump_thread);
EXPORT_SYMBOL(dump_elf_thread);
EXPORT_SYMBOL(dump_elf_task);
EXPORT_SYMBOL(dump_elf_task_fp);
EXPORT_SYMBOL(hwrpb);
EXPORT_SYMBOL(start_thread);
EXPORT_SYMBOL(alpha_read_fp_reg);
EXPORT_SYMBOL(alpha_read_fp_reg_s);
EXPORT_SYMBOL(alpha_write_fp_reg);
EXPORT_SYMBOL(alpha_write_fp_reg_s);
/* In-kernel system calls. */
EXPORT_SYMBOL(kernel_thread);
EXPORT_SYMBOL(sys_open);
EXPORT_SYMBOL(sys_dup);
EXPORT_SYMBOL(sys_exit);
EXPORT_SYMBOL(sys_write);
EXPORT_SYMBOL(sys_read);
EXPORT_SYMBOL(sys_lseek);
EXPORT_SYMBOL(execve);
EXPORT_SYMBOL(sys_setsid);
EXPORT_SYMBOL(sys_wait4);
/* Networking helper routines. */
EXPORT_SYMBOL(csum_tcpudp_magic);
EXPORT_SYMBOL(ip_compute_csum);
EXPORT_SYMBOL(ip_fast_csum);
EXPORT_SYMBOL(csum_partial_copy_nocheck);
EXPORT_SYMBOL(csum_partial_copy_from_user);
EXPORT_SYMBOL(csum_ipv6_magic);
#ifdef CONFIG_MATHEMU_MODULE
extern long (*alpha_fp_emul_imprecise)(struct pt_regs *, unsigned long);
extern long (*alpha_fp_emul) (unsigned long pc);
EXPORT_SYMBOL(alpha_fp_emul_imprecise);
EXPORT_SYMBOL(alpha_fp_emul);
#endif
#ifdef CONFIG_ALPHA_BROKEN_IRQ_MASK
EXPORT_SYMBOL(__min_ipl);
#endif
/*
* The following are specially called from the uaccess assembly stubs.
*/
EXPORT_SYMBOL(__copy_user);
EXPORT_SYMBOL(__do_clear_user);
EXPORT_SYMBOL(__strncpy_from_user);
EXPORT_SYMBOL(__strnlen_user);
/* Semaphore helper functions. */
EXPORT_SYMBOL(__down_failed);
EXPORT_SYMBOL(__down_failed_interruptible);
EXPORT_SYMBOL(__up_wakeup);
EXPORT_SYMBOL(down);
EXPORT_SYMBOL(down_interruptible);
EXPORT_SYMBOL(down_trylock);
EXPORT_SYMBOL(up);
/*
* SMP-specific symbols.
*/
#ifdef CONFIG_SMP
EXPORT_SYMBOL(synchronize_irq);
EXPORT_SYMBOL(flush_tlb_mm);
EXPORT_SYMBOL(flush_tlb_range);
EXPORT_SYMBOL(flush_tlb_page);
EXPORT_SYMBOL(smp_imb);
EXPORT_SYMBOL(cpu_data);
EXPORT_SYMBOL(smp_num_cpus);
EXPORT_SYMBOL(smp_call_function);
EXPORT_SYMBOL(smp_call_function_on_cpu);
EXPORT_SYMBOL(_atomic_dec_and_lock);
#ifdef CONFIG_DEBUG_SPINLOCK
EXPORT_SYMBOL(_raw_spin_unlock);
EXPORT_SYMBOL(debug_spin_lock);
EXPORT_SYMBOL(debug_spin_trylock);
#endif
#ifdef CONFIG_DEBUG_RWLOCK
EXPORT_SYMBOL(_raw_write_lock);
EXPORT_SYMBOL(_raw_read_lock);
#endif
EXPORT_SYMBOL(cpu_present_mask);
#endif /* CONFIG_SMP */
/*
* NUMA specific symbols
*/
#ifdef CONFIG_DISCONTIGMEM
EXPORT_SYMBOL(node_data);
#endif /* CONFIG_DISCONTIGMEM */
EXPORT_SYMBOL(rtc_lock);
/*
* The following are special because they're not called
* explicitly (the C compiler or assembler generates them in
* response to division operations). Fortunately, their
* interface isn't gonna change any time soon now, so it's OK
* to leave it out of version control.
*/
# undef memcpy
# undef memset
EXPORT_SYMBOL(__divl);
EXPORT_SYMBOL(__divlu);
EXPORT_SYMBOL(__divq);
EXPORT_SYMBOL(__divqu);
EXPORT_SYMBOL(__reml);
EXPORT_SYMBOL(__remlu);
EXPORT_SYMBOL(__remq);
EXPORT_SYMBOL(__remqu);
EXPORT_SYMBOL(memcpy);
EXPORT_SYMBOL(memset);
EXPORT_SYMBOL(memchr);
EXPORT_SYMBOL(get_wchan);
#ifdef CONFIG_ALPHA_IRONGATE
EXPORT_SYMBOL(irongate_ioremap);
EXPORT_SYMBOL(irongate_iounmap);
#endif
arch/alpha/kernel/asm-offsets.c
+43
View File
@@ -0,0 +1,43 @@
/*
* Generate definitions needed by assembly language modules.
* This code generates raw asm output which is post-processed to extract
* and format the required data.
*/
#include <linux/types.h>
#include <linux/stddef.h>
#include <linux/sched.h>
#include <linux/ptrace.h>
#include <asm/io.h>
#define DEFINE(sym, val) \
asm volatile("\n->" #sym " %0 " #val : : "i" (val))
#define BLANK() asm volatile("\n->" : : )
void foo(void)
{
DEFINE(TI_TASK, offsetof(struct thread_info, task));
DEFINE(TI_FLAGS, offsetof(struct thread_info, flags));
DEFINE(TI_CPU, offsetof(struct thread_info, cpu));
BLANK();
DEFINE(TASK_BLOCKED, offsetof(struct task_struct, blocked));
DEFINE(TASK_UID, offsetof(struct task_struct, uid));
DEFINE(TASK_EUID, offsetof(struct task_struct, euid));
DEFINE(TASK_GID, offsetof(struct task_struct, gid));
DEFINE(TASK_EGID, offsetof(struct task_struct, egid));
DEFINE(TASK_REAL_PARENT, offsetof(struct task_struct, real_parent));
DEFINE(TASK_TGID, offsetof(struct task_struct, tgid));
BLANK();
DEFINE(SIZEOF_PT_REGS, sizeof(struct pt_regs));
DEFINE(PT_PTRACED, PT_PTRACED);
DEFINE(CLONE_VM, CLONE_VM);
DEFINE(CLONE_UNTRACED, CLONE_UNTRACED);
DEFINE(SIGCHLD, SIGCHLD);
BLANK();
DEFINE(HAE_CACHE, offsetof(struct alpha_machine_vector, hae_cache));
DEFINE(HAE_REG, offsetof(struct alpha_machine_vector, hae_register));
}
arch/alpha/kernel/console.c
+66
View File
@@ -0,0 +1,66 @@
/*
* linux/arch/alpha/kernel/console.c
*
* Architecture-specific specific support for VGA device on
* non-0 I/O hose
*/
#include <linux/config.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/tty.h>
#include <linux/console.h>
#include <asm/vga.h>
#include <asm/machvec.h>
#ifdef CONFIG_VGA_HOSE
/*
* Externally-visible vga hose bases
*/
unsigned long __vga_hose_io_base = 0; /* base for default hose */
unsigned long __vga_hose_mem_base = 0; /* base for default hose */
static struct pci_controller * __init
default_vga_hose_select(struct pci_controller *h1, struct pci_controller *h2)
{
if (h2->index < h1->index)
return h2;
return h1;
}
void __init
set_vga_hose(struct pci_controller *hose)
{
if (hose) {
__vga_hose_io_base = hose->io_space->start;
__vga_hose_mem_base = hose->mem_space->start;
}
}
void __init
locate_and_init_vga(void *(*sel_func)(void *, void *))
{
struct pci_controller *hose = NULL;
struct pci_dev *dev = NULL;
if (!sel_func) sel_func = (void *)default_vga_hose_select;
for(dev=NULL; (dev=pci_get_class(PCI_CLASS_DISPLAY_VGA << 8, dev));) {
if (!hose) hose = dev->sysdata;
else hose = sel_func(hose, dev->sysdata);
}
/* Did we already inititialize the correct one? */
if (conswitchp == &vga_con &&
__vga_hose_io_base == hose->io_space->start &&
__vga_hose_mem_base == hose->mem_space->start)
return;
/* Set the VGA hose and init the new console */
set_vga_hose(hose);
take_over_console(&vga_con, 0, MAX_NR_CONSOLES-1, 1);
}
#endif
arch/alpha/kernel/core_apecs.c
+418
View File
@@ -0,0 +1,418 @@
/*
* linux/arch/alpha/kernel/core_apecs.c
*
* Rewritten for Apecs from the lca.c from:
*
* Written by David Mosberger (davidm@cs.arizona.edu) with some code
* taken from Dave Rusling's (david.rusling@reo.mts.dec.com) 32-bit
* bios code.
*
* Code common to all APECS core logic chips.
*/
#define __EXTERN_INLINE inline
#include <asm/io.h>
#include <asm/core_apecs.h>
#undef __EXTERN_INLINE
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <asm/ptrace.h>
#include <asm/smp.h>
#include "proto.h"
#include "pci_impl.h"
/*
* NOTE: Herein lie back-to-back mb instructions. They are magic.
* One plausible explanation is that the i/o controller does not properly
* handle the system transaction. Another involves timing. Ho hum.
*/
/*
* BIOS32-style PCI interface:
*/
#define DEBUG_CONFIG 0
#if DEBUG_CONFIG
# define DBGC(args) printk args
#else
# define DBGC(args)
#endif
#define vuip volatile unsigned int *
/*
* Given a bus, device, and function number, compute resulting
* configuration space address and setup the APECS_HAXR2 register
* accordingly. It is therefore not safe to have concurrent
* invocations to configuration space access routines, but there
* really shouldn't be any need for this.
*
* Type 0:
*
* 3 3|3 3 2 2|2 2 2 2|2 2 2 2|1 1 1 1|1 1 1 1|1 1
* 3 2|1 0 9 8|7 6 5 4|3 2 1 0|9 8 7 6|5 4 3 2|1 0 9 8|7 6 5 4|3 2 1 0
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | | | | | | | | | | | | | | | | | | | | | | | |F|F|F|R|R|R|R|R|R|0|0|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*
* 31:11 Device select bit.
* 10:8 Function number
* 7:2 Register number
*
* Type 1:
*
* 3 3|3 3 2 2|2 2 2 2|2 2 2 2|1 1 1 1|1 1 1 1|1 1
* 3 2|1 0 9 8|7 6 5 4|3 2 1 0|9 8 7 6|5 4 3 2|1 0 9 8|7 6 5 4|3 2 1 0
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | | | | | | | | | | |B|B|B|B|B|B|B|B|D|D|D|D|D|F|F|F|R|R|R|R|R|R|0|1|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*
* 31:24 reserved
* 23:16 bus number (8 bits = 128 possible buses)
* 15:11 Device number (5 bits)
* 10:8 function number
* 7:2 register number
*
* Notes:
* The function number selects which function of a multi-function device
* (e.g., SCSI and Ethernet).
*
* The register selects a DWORD (32 bit) register offset. Hence it
* doesn't get shifted by 2 bits as we want to "drop" the bottom two
* bits.
*/
static int
mk_conf_addr(struct pci_bus *pbus, unsigned int device_fn, int where,
unsigned long *pci_addr, unsigned char *type1)
{
unsigned long addr;
u8 bus = pbus->number;
DBGC(("mk_conf_addr(bus=%d ,device_fn=0x%x, where=0x%x,"
" pci_addr=0x%p, type1=0x%p)\n",
bus, device_fn, where, pci_addr, type1));
if (bus == 0) {
int device = device_fn >> 3;
/* type 0 configuration cycle: */
if (device > 20) {
DBGC(("mk_conf_addr: device (%d) > 20, returning -1\n",
device));
return -1;
}
*type1 = 0;
addr = (device_fn << 8) | (where);
} else {
/* type 1 configuration cycle: */
*type1 = 1;
addr = (bus << 16) | (device_fn << 8) | (where);
}
*pci_addr = addr;
DBGC(("mk_conf_addr: returning pci_addr 0x%lx\n", addr));
return 0;
}
static unsigned int
conf_read(unsigned long addr, unsigned char type1)
{
unsigned long flags;
unsigned int stat0, value;
unsigned int haxr2 = 0;
local_irq_save(flags); /* avoid getting hit by machine check */
DBGC(("conf_read(addr=0x%lx, type1=%d)\n", addr, type1));
/* Reset status register to avoid losing errors. */
stat0 = *(vuip)APECS_IOC_DCSR;
*(vuip)APECS_IOC_DCSR = stat0;
mb();
DBGC(("conf_read: APECS DCSR was 0x%x\n", stat0));
/* If Type1 access, must set HAE #2. */
if (type1) {
haxr2 = *(vuip)APECS_IOC_HAXR2;
mb();
*(vuip)APECS_IOC_HAXR2 = haxr2 | 1;
DBGC(("conf_read: TYPE1 access\n"));
}
draina();
mcheck_expected(0) = 1;
mcheck_taken(0) = 0;
mb();
/* Access configuration space. */
/* Some SRMs step on these registers during a machine check. */
asm volatile("ldl %0,%1; mb; mb" : "=r"(value) : "m"(*(vuip)addr)
: "$9", "$10", "$11", "$12", "$13", "$14", "memory");
if (mcheck_taken(0)) {
mcheck_taken(0) = 0;
value = 0xffffffffU;
mb();
}
mcheck_expected(0) = 0;
mb();
#if 1
/*
* david.rusling@reo.mts.dec.com. This code is needed for the
* EB64+ as it does not generate a machine check (why I don't
* know). When we build kernels for one particular platform
* then we can make this conditional on the type.
*/
draina();
/* Now look for any errors. */
stat0 = *(vuip)APECS_IOC_DCSR;
DBGC(("conf_read: APECS DCSR after read 0x%x\n", stat0));
/* Is any error bit set? */
if (stat0 & 0xffe0U) {
/* If not NDEV, print status. */
if (!(stat0 & 0x0800)) {
printk("apecs.c:conf_read: got stat0=%x\n", stat0);
}
/* Reset error status. */
*(vuip)APECS_IOC_DCSR = stat0;
mb();
wrmces(0x7); /* reset machine check */
value = 0xffffffff;
}
#endif
/* If Type1 access, must reset HAE #2 so normal IO space ops work. */
if (type1) {
*(vuip)APECS_IOC_HAXR2 = haxr2 & ~1;
mb();
}
local_irq_restore(flags);
return value;
}
static void
conf_write(unsigned long addr, unsigned int value, unsigned char type1)
{
unsigned long flags;
unsigned int stat0;
unsigned int haxr2 = 0;
local_irq_save(flags); /* avoid getting hit by machine check */
/* Reset status register to avoid losing errors. */
stat0 = *(vuip)APECS_IOC_DCSR;
*(vuip)APECS_IOC_DCSR = stat0;
mb();
/* If Type1 access, must set HAE #2. */
if (type1) {
haxr2 = *(vuip)APECS_IOC_HAXR2;
mb();
*(vuip)APECS_IOC_HAXR2 = haxr2 | 1;
}
draina();
mcheck_expected(0) = 1;
mb();
/* Access configuration space. */
*(vuip)addr = value;
mb();
mb(); /* magic */
mcheck_expected(0) = 0;
mb();
#if 1
/*
* david.rusling@reo.mts.dec.com. This code is needed for the
* EB64+ as it does not generate a machine check (why I don't
* know). When we build kernels for one particular platform
* then we can make this conditional on the type.
*/
draina();
/* Now look for any errors. */
stat0 = *(vuip)APECS_IOC_DCSR;
/* Is any error bit set? */
if (stat0 & 0xffe0U) {
/* If not NDEV, print status. */
if (!(stat0 & 0x0800)) {
printk("apecs.c:conf_write: got stat0=%x\n", stat0);
}
/* Reset error status. */
*(vuip)APECS_IOC_DCSR = stat0;
mb();
wrmces(0x7); /* reset machine check */
}
#endif
/* If Type1 access, must reset HAE #2 so normal IO space ops work. */
if (type1) {
*(vuip)APECS_IOC_HAXR2 = haxr2 & ~1;
mb();
}
local_irq_restore(flags);
}
static int
apecs_read_config(struct pci_bus *bus, unsigned int devfn, int where,
int size, u32 *value)
{
unsigned long addr, pci_addr;
unsigned char type1;
long mask;
int shift;
if (mk_conf_addr(bus, devfn, where, &pci_addr, &type1))
return PCIBIOS_DEVICE_NOT_FOUND;
mask = (size - 1) * 8;
shift = (where & 3) * 8;
addr = (pci_addr << 5) + mask + APECS_CONF;
*value = conf_read(addr, type1) >> (shift);
return PCIBIOS_SUCCESSFUL;
}
static int
apecs_write_config(struct pci_bus *bus, unsigned int devfn, int where,
int size, u32 value)
{
unsigned long addr, pci_addr;
unsigned char type1;
long mask;
if (mk_conf_addr(bus, devfn, where, &pci_addr, &type1))
return PCIBIOS_DEVICE_NOT_FOUND;
mask = (size - 1) * 8;
addr = (pci_addr << 5) + mask + APECS_CONF;
conf_write(addr, value << ((where & 3) * 8), type1);
return PCIBIOS_SUCCESSFUL;
}
struct pci_ops apecs_pci_ops =
{
.read = apecs_read_config,
.write = apecs_write_config,
};
void
apecs_pci_tbi(struct pci_controller *hose, dma_addr_t start, dma_addr_t end)
{
wmb();
*(vip)APECS_IOC_TBIA = 0;
mb();
}
void __init
apecs_init_arch(void)
{
struct pci_controller *hose;
/*
* Create our single hose.
*/
pci_isa_hose = hose = alloc_pci_controller();
hose->io_space = &ioport_resource;
hose->mem_space = &iomem_resource;
hose->index = 0;
hose->sparse_mem_base = APECS_SPARSE_MEM - IDENT_ADDR;
hose->dense_mem_base = APECS_DENSE_MEM - IDENT_ADDR;
hose->sparse_io_base = APECS_IO - IDENT_ADDR;
hose->dense_io_base = 0;
/*
* Set up the PCI to main memory translation windows.
*
* Window 1 is direct access 1GB at 1GB
* Window 2 is scatter-gather 8MB at 8MB (for isa)
*/
hose->sg_isa = iommu_arena_new(hose, 0x00800000, 0x00800000, 0);
hose->sg_pci = NULL;
__direct_map_base = 0x40000000;
__direct_map_size = 0x40000000;
*(vuip)APECS_IOC_PB1R = __direct_map_base | 0x00080000;
*(vuip)APECS_IOC_PM1R = (__direct_map_size - 1) & 0xfff00000U;
*(vuip)APECS_IOC_TB1R = 0;
*(vuip)APECS_IOC_PB2R = hose->sg_isa->dma_base | 0x000c0000;
*(vuip)APECS_IOC_PM2R = (hose->sg_isa->size - 1) & 0xfff00000;
*(vuip)APECS_IOC_TB2R = virt_to_phys(hose->sg_isa->ptes) >> 1;
apecs_pci_tbi(hose, 0, -1);
/*
* Finally, clear the HAXR2 register, which gets used
* for PCI Config Space accesses. That is the way
* we want to use it, and we do not want to depend on
* what ARC or SRM might have left behind...
*/
*(vuip)APECS_IOC_HAXR2 = 0;
mb();
}
void
apecs_pci_clr_err(void)
{
unsigned int jd;
jd = *(vuip)APECS_IOC_DCSR;
if (jd & 0xffe0L) {
*(vuip)APECS_IOC_SEAR;
*(vuip)APECS_IOC_DCSR = jd | 0xffe1L;
mb();
*(vuip)APECS_IOC_DCSR;
}
*(vuip)APECS_IOC_TBIA = (unsigned int)APECS_IOC_TBIA;
mb();
*(vuip)APECS_IOC_TBIA;
}
void
apecs_machine_check(unsigned long vector, unsigned long la_ptr,
struct pt_regs * regs)
{
struct el_common *mchk_header;
struct el_apecs_procdata *mchk_procdata;
struct el_apecs_sysdata_mcheck *mchk_sysdata;
mchk_header = (struct el_common *)la_ptr;
mchk_procdata = (struct el_apecs_procdata *)
(la_ptr + mchk_header->proc_offset
- sizeof(mchk_procdata->paltemp));
mchk_sysdata = (struct el_apecs_sysdata_mcheck *)
(la_ptr + mchk_header->sys_offset);
/* Clear the error before any reporting. */
mb();
mb(); /* magic */
draina();
apecs_pci_clr_err();
wrmces(0x7); /* reset machine check pending flag */
mb();
process_mcheck_info(vector, la_ptr, regs, "APECS",
(mcheck_expected(0)
&& (mchk_sysdata->epic_dcsr & 0x0c00UL)));
}
arch/alpha/kernel/core_cia.c
+1212
View File
File diff suppressed because it is too large Load Diff
arch/alpha/kernel/core_irongate.c
+416
View File
@@ -0,0 +1,416 @@
/*
* linux/arch/alpha/kernel/core_irongate.c
*
* Based on code written by David A. Rusling (david.rusling@reo.mts.dec.com).
*
* Copyright (C) 1999 Alpha Processor, Inc.,
* (David Daniel, Stig Telfer, Soohoon Lee)
*
* Code common to all IRONGATE core logic chips.
*/
#define __EXTERN_INLINE inline
#include <asm/io.h>
#include <asm/core_irongate.h>
#undef __EXTERN_INLINE
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/sched.h>
#include <linux/init.h>
#include <linux/initrd.h>
#include <linux/bootmem.h>
#include <asm/ptrace.h>
#include <asm/pci.h>
#include <asm/cacheflush.h>
#include <asm/tlbflush.h>
#include "proto.h"
#include "pci_impl.h"
/*
* BIOS32-style PCI interface:
*/
#define DEBUG_CONFIG 0
#if DEBUG_CONFIG
# define DBG_CFG(args) printk args
#else
# define DBG_CFG(args)
#endif
igcsr32 *IronECC;
/*
* Given a bus, device, and function number, compute resulting
* configuration space address accordingly. It is therefore not safe
* to have concurrent invocations to configuration space access
* routines, but there really shouldn't be any need for this.
*
* addr[31:24] reserved
* addr[23:16] bus number (8 bits = 128 possible buses)
* addr[15:11] Device number (5 bits)
* addr[10: 8] function number
* addr[ 7: 2] register number
*
* For IRONGATE:
* if (bus = addr[23:16]) == 0
* then
* type 0 config cycle:
* addr_on_pci[31:11] = id selection for device = addr[15:11]
* addr_on_pci[10: 2] = addr[10: 2] ???
* addr_on_pci[ 1: 0] = 00
* else
* type 1 config cycle (pass on with no decoding):
* addr_on_pci[31:24] = 0
* addr_on_pci[23: 2] = addr[23: 2]
* addr_on_pci[ 1: 0] = 01
* fi
*
* Notes:
* The function number selects which function of a multi-function device
* (e.g., SCSI and Ethernet).
*
* The register selects a DWORD (32 bit) register offset. Hence it
* doesn't get shifted by 2 bits as we want to "drop" the bottom two
* bits.
*/
static int
mk_conf_addr(struct pci_bus *pbus, unsigned int device_fn, int where,
unsigned long *pci_addr, unsigned char *type1)
{
unsigned long addr;
u8 bus = pbus->number;
DBG_CFG(("mk_conf_addr(bus=%d ,device_fn=0x%x, where=0x%x, "
"pci_addr=0x%p, type1=0x%p)\n",
bus, device_fn, where, pci_addr, type1));
*type1 = (bus != 0);
addr = (bus << 16) | (device_fn << 8) | where;
addr |= IRONGATE_CONF;
*pci_addr = addr;
DBG_CFG(("mk_conf_addr: returning pci_addr 0x%lx\n", addr));
return 0;
}
static int
irongate_read_config(struct pci_bus *bus, unsigned int devfn, int where,
int size, u32 *value)
{
unsigned long addr;
unsigned char type1;
if (mk_conf_addr(bus, devfn, where, &addr, &type1))
return PCIBIOS_DEVICE_NOT_FOUND;
switch (size) {
case 1:
*value = __kernel_ldbu(*(vucp)addr);
break;
case 2:
*value = __kernel_ldwu(*(vusp)addr);
break;
case 4:
*value = *(vuip)addr;
break;
}
return PCIBIOS_SUCCESSFUL;
}
static int
irongate_write_config(struct pci_bus *bus, unsigned int devfn, int where,
int size, u32 value)
{
unsigned long addr;
unsigned char type1;
if (mk_conf_addr(bus, devfn, where, &addr, &type1))
return PCIBIOS_DEVICE_NOT_FOUND;
switch (size) {
case 1:
__kernel_stb(value, *(vucp)addr);
mb();
__kernel_ldbu(*(vucp)addr);
break;
case 2:
__kernel_stw(value, *(vusp)addr);
mb();
__kernel_ldwu(*(vusp)addr);
break;
case 4:
*(vuip)addr = value;
mb();
*(vuip)addr;
break;
}
return PCIBIOS_SUCCESSFUL;
}
struct pci_ops irongate_pci_ops =
{
.read = irongate_read_config,
.write = irongate_write_config,
};
int
irongate_pci_clr_err(void)
{
unsigned int nmi_ctl=0;
unsigned int IRONGATE_jd;
again:
IRONGATE_jd = IRONGATE0->stat_cmd;
printk("Iron stat_cmd %x\n", IRONGATE_jd);
IRONGATE0->stat_cmd = IRONGATE_jd; /* write again clears error bits */
mb();
IRONGATE_jd = IRONGATE0->stat_cmd; /* re-read to force write */
IRONGATE_jd = *IronECC;
printk("Iron ECC %x\n", IRONGATE_jd);
*IronECC = IRONGATE_jd; /* write again clears error bits */
mb();
IRONGATE_jd = *IronECC; /* re-read to force write */
/* Clear ALI NMI */
nmi_ctl = inb(0x61);
nmi_ctl |= 0x0c;
outb(nmi_ctl, 0x61);
nmi_ctl &= ~0x0c;
outb(nmi_ctl, 0x61);
IRONGATE_jd = *IronECC;
if (IRONGATE_jd & 0x300) goto again;
return 0;
}
#define IRONGATE_3GB 0xc0000000UL
/* On Albacore (aka UP1500) with 4Gb of RAM we have to reserve some
memory for PCI. At this point we just reserve memory above 3Gb. Most
of this memory will be freed after PCI setup is done. */
static void __init
albacore_init_arch(void)
{
unsigned long memtop = max_low_pfn << PAGE_SHIFT;
unsigned long pci_mem = (memtop + 0x1000000UL) & ~0xffffffUL;
struct percpu_struct *cpu;
int pal_rev, pal_var;
cpu = (struct percpu_struct*)((char*)hwrpb + hwrpb->processor_offset);
pal_rev = cpu->pal_revision & 0xffff;
pal_var = (cpu->pal_revision >> 16) & 0xff;
/* Consoles earlier than A5.6-18 (OSF PALcode v1.62-2) set up
the CPU incorrectly (leave speculative stores enabled),
which causes memory corruption under certain conditions.
Issue a warning for such consoles. */
if (alpha_using_srm &&
(pal_rev < 0x13e || (pal_rev == 0x13e && pal_var < 2)))
printk(KERN_WARNING "WARNING! Upgrade to SRM A5.6-19 "
"or later\n");
if (pci_mem > IRONGATE_3GB)
pci_mem = IRONGATE_3GB;
IRONGATE0->pci_mem = pci_mem;
alpha_mv.min_mem_address = pci_mem;
if (memtop > pci_mem) {
#ifdef CONFIG_BLK_DEV_INITRD
extern unsigned long initrd_start, initrd_end;
extern void *move_initrd(unsigned long);
/* Move the initrd out of the way. */
if (initrd_end && __pa(initrd_end) > pci_mem) {
unsigned long size;
size = initrd_end - initrd_start;
free_bootmem_node(NODE_DATA(0), __pa(initrd_start),
PAGE_ALIGN(size));
if (!move_initrd(pci_mem))
printk("irongate_init_arch: initrd too big "
"(%ldK)\ndisabling initrd\n",
size / 1024);
}
#endif
reserve_bootmem_node(NODE_DATA(0), pci_mem, memtop - pci_mem);
printk("irongate_init_arch: temporarily reserving "
"region %08lx-%08lx for PCI\n", pci_mem, memtop - 1);
}
}
static void __init
irongate_setup_agp(void)
{
/* Disable the GART window. AGPGART doesn't work due to yet
unresolved memory coherency issues... */
IRONGATE0->agpva = IRONGATE0->agpva & ~0xf;
alpha_agpgart_size = 0;
}
void __init
irongate_init_arch(void)
{
struct pci_controller *hose;
int amd761 = (IRONGATE0->dev_vendor >> 16) > 0x7006; /* Albacore? */
IronECC = amd761 ? &IRONGATE0->bacsr54_eccms761 : &IRONGATE0->dramms;
irongate_pci_clr_err();
if (amd761)
albacore_init_arch();
irongate_setup_agp();
/*
* Create our single hose.
*/
pci_isa_hose = hose = alloc_pci_controller();
hose->io_space = &ioport_resource;
hose->mem_space = &iomem_resource;
hose->index = 0;
/* This is for userland consumption. For some reason, the 40-bit
PIO bias that we use in the kernel through KSEG didn't work for
the page table based user mappings. So make sure we get the
43-bit PIO bias. */
hose->sparse_mem_base = 0;
hose->sparse_io_base = 0;
hose->dense_mem_base
= (IRONGATE_MEM & 0xffffffffffUL) | 0x80000000000UL;
hose->dense_io_base
= (IRONGATE_IO & 0xffffffffffUL) | 0x80000000000UL;
hose->sg_isa = hose->sg_pci = NULL;
__direct_map_base = 0;
__direct_map_size = 0xffffffff;
}
/*
* IO map and AGP support
*/
#include <linux/vmalloc.h>
#include <linux/agp_backend.h>
#include <linux/agpgart.h>
#include <asm/pgalloc.h>
#define GET_PAGE_DIR_OFF(addr) (addr >> 22)
#define GET_PAGE_DIR_IDX(addr) (GET_PAGE_DIR_OFF(addr))
#define GET_GATT_OFF(addr) ((addr & 0x003ff000) >> 12)
#define GET_GATT(addr) (gatt_pages[GET_PAGE_DIR_IDX(addr)])
void __iomem *
irongate_ioremap(unsigned long addr, unsigned long size)
{
struct vm_struct *area;
unsigned long vaddr;
unsigned long baddr, last;
u32 *mmio_regs, *gatt_pages, *cur_gatt, pte;
unsigned long gart_bus_addr;
if (!alpha_agpgart_size)
return (void __iomem *)(addr + IRONGATE_MEM);
gart_bus_addr = (unsigned long)IRONGATE0->bar0 &
PCI_BASE_ADDRESS_MEM_MASK;
/*
* Check for within the AGP aperture...
*/
do {
/*
* Check the AGP area
*/
if (addr >= gart_bus_addr && addr + size - 1 <
gart_bus_addr + alpha_agpgart_size)
break;
/*
* Not found - assume legacy ioremap
*/
return (void __iomem *)(addr + IRONGATE_MEM);
} while(0);
mmio_regs = (u32 *)(((unsigned long)IRONGATE0->bar1 &
PCI_BASE_ADDRESS_MEM_MASK) + IRONGATE_MEM);
gatt_pages = (u32 *)(phys_to_virt(mmio_regs[1])); /* FIXME */
/*
* Adjust the limits (mappings must be page aligned)
*/
if (addr & ~PAGE_MASK) {
printk("AGP ioremap failed... addr not page aligned (0x%lx)\n",
addr);
return (void __iomem *)(addr + IRONGATE_MEM);
}
last = addr + size - 1;
size = PAGE_ALIGN(last) - addr;
#if 0
printk("irongate_ioremap(0x%lx, 0x%lx)\n", addr, size);
printk("irongate_ioremap: gart_bus_addr 0x%lx\n", gart_bus_addr);
printk("irongate_ioremap: gart_aper_size 0x%lx\n", gart_aper_size);
printk("irongate_ioremap: mmio_regs %p\n", mmio_regs);
printk("irongate_ioremap: gatt_pages %p\n", gatt_pages);
for(baddr = addr; baddr <= last; baddr += PAGE_SIZE)
{
cur_gatt = phys_to_virt(GET_GATT(baddr) & ~1);
pte = cur_gatt[GET_GATT_OFF(baddr)] & ~1;
printk("irongate_ioremap: cur_gatt %p pte 0x%x\n",
cur_gatt, pte);
}
#endif
/*
* Map it
*/
area = get_vm_area(size, VM_IOREMAP);
if (!area) return NULL;
for(baddr = addr, vaddr = (unsigned long)area->addr;
baddr <= last;
baddr += PAGE_SIZE, vaddr += PAGE_SIZE)
{
cur_gatt = phys_to_virt(GET_GATT(baddr) & ~1);
pte = cur_gatt[GET_GATT_OFF(baddr)] & ~1;
if (__alpha_remap_area_pages(vaddr,
pte, PAGE_SIZE, 0)) {
printk("AGP ioremap: FAILED to map...\n");
vfree(area->addr);
return NULL;
}
}
flush_tlb_all();
vaddr = (unsigned long)area->addr + (addr & ~PAGE_MASK);
#if 0
printk("irongate_ioremap(0x%lx, 0x%lx) returning 0x%lx\n",
addr, size, vaddr);
#endif
return (void __iomem *)vaddr;
}
void
irongate_iounmap(volatile void __iomem *xaddr)
{
unsigned long addr = (unsigned long) xaddr;
if (((long)addr >> 41) == -2)
return; /* kseg map, nothing to do */
if (addr)
return vfree((void *)(PAGE_MASK & addr));
}

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