[PATCH] xtensa: Architecture support for Tensilica Xtensa Part 2
The attached patches provides part 2 of an architecture implementation for the Tensilica Xtensa CPU series. Signed-off-by: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Chris Zankel
Linus Torvalds
parent
8e1a6dd2fd
commit
4bedea9454
|
|
@ -0,0 +1,37 @@
|
|||
#
|
||||
# arch/xtensa/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.
|
||||
#
|
||||
#
|
||||
|
||||
|
||||
CFLAGS += -fno-builtin -Iarch/$(ARCH)/boot/include
|
||||
HOSTFLAGS += -Iarch/$(ARCH)/boot/include
|
||||
|
||||
BIG_ENDIAN := $(shell echo -e "\#ifdef __XTENSA_EL__\nint little;\n\#else\nint big;\n\#endif" | $(CC) -E -|grep -c big)
|
||||
|
||||
|
||||
export CFLAGS
|
||||
export AFLAGS
|
||||
export BIG_ENDIAN
|
||||
|
||||
# Subdirs for the boot loader(s)
|
||||
|
||||
bootdir-$(CONFIG_XTENSA_PLATFORM_ISS) += boot-elf
|
||||
bootdir-$(CONFIG_XTENSA_PLATFORM_XT2000) += boot-redboot boot-elf
|
||||
|
||||
subdir-y := lib/
|
||||
|
||||
subdir-y += boot-elf/ boot-redboot/
|
||||
|
||||
zImage zImage.initrd Image Image.initrd: $(bootdir-y)
|
||||
|
||||
$(bootdir-y): $(addprefix $(obj)/,$(subdir-y)) \
|
||||
$(addprefix $(obj)/,$(host-progs))
|
||||
$(Q)$(MAKE) $(build)=$(obj)/$@ $(MAKECMDGOALS)
|
||||
|
||||
|
||||
|
||||
|
|
@ -0,0 +1,52 @@
|
|||
#
|
||||
# This file is subject to the terms and conditions of the GNU General Public
|
||||
# License. See the file "COPYING" in the main directory of this archive
|
||||
# for more details.
|
||||
#
|
||||
|
||||
GZIP = gzip
|
||||
GZIP_FLAGS = -v9fc
|
||||
|
||||
ifeq ($(BIG_ENDIAN),1)
|
||||
OBJCOPY_ARGS := -O elf32-xtensa-be
|
||||
else
|
||||
OBJCOPY_ARGS := -O elf32-xtensa-le
|
||||
endif
|
||||
|
||||
export OBJCOPY_ARGS
|
||||
|
||||
boot-y := bootstrap.o
|
||||
|
||||
OBJS := $(addprefix $(obj)/,$(boot-y))
|
||||
|
||||
Image: vmlinux $(OBJS)
|
||||
$(OBJCOPY) --strip-all -R .comment -R .xt.insn -O binary \
|
||||
vmlinux vmlinux.tmp
|
||||
$(OBJCOPY) $(OBJCOPY_ARGS) -R .comment \
|
||||
--add-section image=vmlinux.tmp \
|
||||
--set-section-flags image=contents,alloc,load,load,data \
|
||||
$(OBJS) $@.tmp
|
||||
$(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) \
|
||||
-T arch/$(ARCH)/boot/boot-elf/boot.ld \
|
||||
-o arch/$(ARCH)/boot/$@.elf $@.tmp
|
||||
rm -f $@.tmp vmlinux.tmp
|
||||
|
||||
Image.initrd: vmlinux $(OBJS)
|
||||
$(OBJCOPY) --strip-all -R .comment -R .xt.insn -O binary \
|
||||
--add-section .initrd=arch/$(ARCH)/boot/ramdisk \
|
||||
--set-section-flags .initrd=contents,alloc,load,load,data \
|
||||
vmlinux vmlinux.tmp
|
||||
$(OBJCOPY) $(OBJCOPY_ARGS) -R .comment \
|
||||
--add-section image=vmlinux.tmp \
|
||||
--set-section-flags image=contents,alloc,load,load,data \
|
||||
$(OBJS) $@.tmp
|
||||
$(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) \
|
||||
-T arch/$(ARCH)/boot/boot-elf/boot.ld \
|
||||
-o arch/$(ARCH)/boot/$@.elf $@.tmp
|
||||
rm -f $@.tmp vmlinux.tmp
|
||||
|
||||
|
||||
zImage: Image
|
||||
|
||||
zImage.initrd: Image.initrd
|
||||
|
||||
|
|
@ -0,0 +1,71 @@
|
|||
OUTPUT_ARCH(xtensa)
|
||||
|
||||
SECTIONS
|
||||
{
|
||||
.start 0xD0000000 : { *(.start) }
|
||||
|
||||
.text 0xD0000000:
|
||||
{
|
||||
__reloc_start = . ;
|
||||
_text_start = . ;
|
||||
*(.literal .text.literal .text)
|
||||
_text_end = . ;
|
||||
}
|
||||
|
||||
.rodata ALIGN(0x04):
|
||||
{
|
||||
*(.rodata)
|
||||
*(.rodata1)
|
||||
}
|
||||
|
||||
.data ALIGN(0x04):
|
||||
{
|
||||
*(.data)
|
||||
*(.data1)
|
||||
*(.sdata)
|
||||
*(.sdata2)
|
||||
*(.got.plt)
|
||||
*(.got)
|
||||
*(.dynamic)
|
||||
}
|
||||
|
||||
__reloc_end = . ;
|
||||
|
||||
.initrd ALIGN(0x10) :
|
||||
{
|
||||
boot_initrd_start = . ;
|
||||
*(.initrd)
|
||||
boot_initrd_end = .;
|
||||
}
|
||||
|
||||
. = ALIGN(0x10);
|
||||
__image_load = . ;
|
||||
.image 0xd0001000:
|
||||
{
|
||||
_image_start = .;
|
||||
*(image)
|
||||
. = (. + 3) & ~ 3;
|
||||
_image_end = . ;
|
||||
}
|
||||
|
||||
|
||||
.bss ((LOADADDR(.image) + SIZEOF(.image) + 3) & ~ 3):
|
||||
{
|
||||
__bss_start = .;
|
||||
*(.sbss)
|
||||
*(.scommon)
|
||||
*(.dynbss)
|
||||
*(.bss)
|
||||
__bss_end = .;
|
||||
}
|
||||
_end = .;
|
||||
_param_start = .;
|
||||
|
||||
.ResetVector.text 0xfe000020 :
|
||||
{
|
||||
*(.ResetVector.text)
|
||||
}
|
||||
|
||||
|
||||
PROVIDE (end = .);
|
||||
}
|
||||
|
|
@ -0,0 +1,37 @@
|
|||
|
||||
#include <xtensa/config/specreg.h>
|
||||
#include <xtensa/config/core.h>
|
||||
|
||||
#include <linux/config.h>
|
||||
#include <asm/bootparam.h>
|
||||
|
||||
|
||||
/* ResetVector
|
||||
*/
|
||||
.section .ResetVector.text, "ax"
|
||||
.global _ResetVector
|
||||
_ResetVector:
|
||||
_j reset
|
||||
.align 4
|
||||
RomInitAddr:
|
||||
.word 0xd0001000
|
||||
RomBootParam:
|
||||
.word _bootparam
|
||||
reset:
|
||||
l32r a0, RomInitAddr
|
||||
l32r a2, RomBootParam
|
||||
movi a3, 0
|
||||
movi a4, 0
|
||||
jx a0
|
||||
|
||||
.align 4
|
||||
.section .bootstrap.data, "aw"
|
||||
|
||||
.globl _bootparam
|
||||
_bootparam:
|
||||
.short BP_TAG_FIRST
|
||||
.short 4
|
||||
.long BP_VERSION
|
||||
.short BP_TAG_LAST
|
||||
.short 0
|
||||
.long 0
|
||||
|
|
@ -0,0 +1,35 @@
|
|||
#
|
||||
# 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.
|
||||
#
|
||||
|
||||
GZIP = gzip
|
||||
GZIP_FLAGS = -v9fc
|
||||
ifeq ($(BIG_ENDIAN),1)
|
||||
OBJCOPY_ARGS := -O elf32-xtensa-be
|
||||
else
|
||||
OBJCOPY_ARGS := -O elf32-xtensa-le
|
||||
endif
|
||||
|
||||
LD_ARGS = -T $(obj)/boot.ld
|
||||
|
||||
boot-y := bootstrap.o
|
||||
|
||||
OBJS := $(addprefix $(obj)/,$(boot-y))
|
||||
LIBS := arch/$(ARCH)/boot/lib/lib.a arch/$(ARCH)/lib/lib.a
|
||||
|
||||
LIBGCC := $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)
|
||||
|
||||
zImage: vmlinux $(OBJS) $(LIBS)
|
||||
$(OBJCOPY) --strip-all -R .comment -R .xt.insn -O binary \
|
||||
$(TOPDIR)/vmlinux vmlinux.tmp
|
||||
gzip -vf9 vmlinux.tmp
|
||||
$(OBJCOPY) $(OBJCOPY_ARGS) -R .comment \
|
||||
--add-section image=vmlinux.tmp.gz \
|
||||
--set-section-flags image=contents,alloc,load,load,data \
|
||||
$(OBJS) $@.tmp
|
||||
$(LD) $(LD_ARGS) -o $@.elf $@.tmp $(LIBS) -L/xtensa-elf/lib $(LIBGCC)
|
||||
$(OBJCOPY) -S -O binary $@.elf arch/$(ARCH)/boot/images/$@.redboot
|
||||
# rm -f $@.tmp $@.elf vmlinux.tmp.gz
|
||||
|
||||
|
|
@ -0,0 +1,66 @@
|
|||
OUTPUT_ARCH(xtensa)
|
||||
|
||||
SECTIONS
|
||||
{
|
||||
.start 0xD0200000 : { *(.start) }
|
||||
|
||||
.text :
|
||||
{
|
||||
__reloc_start = . ;
|
||||
_text_start = . ;
|
||||
*(.literal .text.literal .text)
|
||||
_text_end = . ;
|
||||
}
|
||||
|
||||
.rodata ALIGN(0x04):
|
||||
{
|
||||
*(.rodata)
|
||||
*(.rodata1)
|
||||
}
|
||||
|
||||
.data ALIGN(0x04):
|
||||
{
|
||||
*(.data)
|
||||
*(.data1)
|
||||
*(.sdata)
|
||||
*(.sdata2)
|
||||
*(.got.plt)
|
||||
*(.got)
|
||||
*(.dynamic)
|
||||
}
|
||||
|
||||
__reloc_end = . ;
|
||||
|
||||
.initrd ALIGN(0x10) :
|
||||
{
|
||||
boot_initrd_start = . ;
|
||||
*(.initrd)
|
||||
boot_initrd_end = .;
|
||||
}
|
||||
|
||||
. = ALIGN(0x10);
|
||||
__image_load = . ;
|
||||
.image 0xd0001000: AT(__image_load)
|
||||
{
|
||||
_image_start = .;
|
||||
*(image)
|
||||
. = (. + 3) & ~ 3;
|
||||
_image_end = . ;
|
||||
}
|
||||
|
||||
|
||||
.bss ((LOADADDR(.image) + SIZEOF(.image) + 3) & ~ 3):
|
||||
{
|
||||
__bss_start = .;
|
||||
*(.sbss)
|
||||
*(.scommon)
|
||||
*(.dynbss)
|
||||
*(.bss)
|
||||
__bss_end = .;
|
||||
}
|
||||
_end = .;
|
||||
_param_start = .;
|
||||
|
||||
|
||||
PROVIDE (end = .);
|
||||
}
|
||||
|
|
@ -0,0 +1,246 @@
|
|||
|
||||
#define _ASMLANGUAGE
|
||||
#include <xtensa/config/specreg.h>
|
||||
#include <xtensa/config/core.h>
|
||||
#include <xtensa/cacheasm.h>
|
||||
|
||||
/*
|
||||
* RB-Data: RedBoot data/bss
|
||||
* P: Boot-Parameters
|
||||
* L: Kernel-Loader
|
||||
*
|
||||
* The Linux-Kernel image including the loader must be loaded
|
||||
* to a position so that the kernel and the boot parameters
|
||||
* can fit in the space before the load address.
|
||||
* ______________________________________________________
|
||||
* |_RB-Data_|_P_|__________|_L_|___Linux-Kernel___|______|
|
||||
* ^
|
||||
* ^ Load address
|
||||
* ______________________________________________________
|
||||
* |___Linux-Kernel___|_P_|_L_|___________________________|
|
||||
*
|
||||
* The loader copies the parameter to the position that will
|
||||
* be the end of the kernel and itself to the end of the
|
||||
* parameter list.
|
||||
*/
|
||||
|
||||
/* Make sure we have enough space for the 'uncompressor' */
|
||||
|
||||
#define STACK_SIZE 32768
|
||||
#define HEAP_SIZE (131072*4)
|
||||
|
||||
# a2: Parameter list
|
||||
# a3: Size of parameter list
|
||||
|
||||
.section .start, "ax"
|
||||
|
||||
.globl __start
|
||||
/* this must be the first byte of the loader! */
|
||||
__start:
|
||||
entry sp, 32 # we do not intend to return
|
||||
_call0 _start
|
||||
__start_a0:
|
||||
.align 4
|
||||
|
||||
.section .text, "ax"
|
||||
.begin literal_prefix .text
|
||||
|
||||
/* put literals in here! */
|
||||
|
||||
.globl _start
|
||||
_start:
|
||||
|
||||
/* 'reset' window registers */
|
||||
|
||||
movi a4, 1
|
||||
wsr a4, PS
|
||||
rsync
|
||||
|
||||
rsr a5, WINDOWBASE
|
||||
ssl a5
|
||||
sll a4, a4
|
||||
wsr a4, WINDOWSTART
|
||||
rsync
|
||||
|
||||
movi a4, 0x00040000
|
||||
wsr a4, PS
|
||||
rsync
|
||||
|
||||
/* copy the loader to its address
|
||||
* Note: The loader itself is a very small piece, so we assume we
|
||||
* don't partially overlap. We also assume (even more important)
|
||||
* that the kernel image is out of the way. Usually, when the
|
||||
* load address of this image is not at an arbitrary address,
|
||||
* but aligned to some 10K's we shouldn't overlap.
|
||||
*/
|
||||
|
||||
/* Note: The assembler cannot relax "addi a0, a0, ..." to an
|
||||
l32r, so we load to a4 first. */
|
||||
|
||||
addi a4, a0, __start - __start_a0
|
||||
mov a0, a4
|
||||
movi a4, __start
|
||||
movi a5, __reloc_end
|
||||
|
||||
# a0: address where this code has been loaded
|
||||
# a4: compiled address of __start
|
||||
# a5: compiled end address
|
||||
|
||||
mov.n a7, a0
|
||||
mov.n a8, a4
|
||||
|
||||
1:
|
||||
l32i a10, a7, 0
|
||||
l32i a11, a7, 4
|
||||
s32i a10, a8, 0
|
||||
s32i a11, a8, 4
|
||||
l32i a10, a7, 8
|
||||
l32i a11, a7, 12
|
||||
s32i a10, a8, 8
|
||||
s32i a11, a8, 12
|
||||
addi a8, a8, 16
|
||||
addi a7, a7, 16
|
||||
blt a8, a5, 1b
|
||||
|
||||
|
||||
/* We have to flush and invalidate the caches here before we jump. */
|
||||
|
||||
#if XCHAL_DCACHE_IS_WRITEBACK
|
||||
dcache_writeback_all a5, a6
|
||||
#endif
|
||||
icache_invalidate_all a5, a6
|
||||
|
||||
movi a11, _reloc
|
||||
jx a11
|
||||
|
||||
.globl _reloc
|
||||
_reloc:
|
||||
|
||||
/* RedBoot is now at the end of the memory, so we don't have
|
||||
* to copy the parameter list. Keep the code around; in case
|
||||
* we need it again. */
|
||||
#if 0
|
||||
# a0: load address
|
||||
# a2: start address of parameter list
|
||||
# a3: length of parameter list
|
||||
# a4: __start
|
||||
|
||||
/* copy the parameter list out of the way */
|
||||
|
||||
movi a6, _param_start
|
||||
add a3, a2, a3
|
||||
2:
|
||||
l32i a8, a2, 0
|
||||
s32i a8, a6, 0
|
||||
addi a2, a2, 4
|
||||
addi a6, a6, 4
|
||||
blt a2, a3, 2b
|
||||
#endif
|
||||
|
||||
/* clear BSS section */
|
||||
movi a6, __bss_start
|
||||
movi a7, __bss_end
|
||||
movi.n a5, 0
|
||||
3:
|
||||
s32i a5, a6, 0
|
||||
addi a6, a6, 4
|
||||
blt a6, a7, 3b
|
||||
|
||||
movi a5, -16
|
||||
movi a1, _stack + STACK_SIZE
|
||||
and a1, a1, a5
|
||||
|
||||
/* Uncompress the kernel */
|
||||
|
||||
# a0: load address
|
||||
# a2: boot parameter
|
||||
# a4: __start
|
||||
|
||||
movi a3, __image_load
|
||||
sub a4, a3, a4
|
||||
add a8, a0, a4
|
||||
|
||||
# a1 Stack
|
||||
# a8(a4) Load address of the image
|
||||
|
||||
movi a6, _image_start
|
||||
movi a10, _image_end
|
||||
movi a7, 0x1000000
|
||||
sub a11, a10, a6
|
||||
movi a9, complen
|
||||
s32i a11, a9, 0
|
||||
|
||||
movi a0, 0
|
||||
|
||||
# a6 destination
|
||||
# a7 maximum size of destination
|
||||
# a8 source
|
||||
# a9 ptr to length
|
||||
|
||||
.extern gunzip
|
||||
movi a4, gunzip
|
||||
beqz a4, 1f
|
||||
|
||||
callx4 a4
|
||||
|
||||
j 2f
|
||||
|
||||
|
||||
# a6 destination start
|
||||
# a7 maximum size of destination
|
||||
# a8 source start
|
||||
# a9 ptr to length
|
||||
# a10 destination end
|
||||
|
||||
1:
|
||||
l32i a9, a8, 0
|
||||
l32i a11, a8, 4
|
||||
s32i a9, a6, 0
|
||||
s32i a11, a6, 4
|
||||
l32i a9, a8, 8
|
||||
l32i a11, a8, 12
|
||||
s32i a9, a6, 8
|
||||
s32i a11, a6, 12
|
||||
addi a6, a6, 16
|
||||
addi a8, a8, 16
|
||||
blt a6, a10, 1b
|
||||
|
||||
|
||||
/* jump to the kernel */
|
||||
2:
|
||||
#if XCHAL_DCACHE_IS_WRITEBACK
|
||||
dcache_writeback_all a5, a6
|
||||
#endif
|
||||
icache_invalidate_all a5, a6
|
||||
|
||||
movi a5, __start
|
||||
movi a3, boot_initrd_start
|
||||
movi a4, boot_initrd_end
|
||||
sub a3, a3, a5
|
||||
sub a4, a4, a5
|
||||
add a3, a0, a3
|
||||
add a4, a0, a4
|
||||
|
||||
# a2 Boot parameter list
|
||||
# a3 initrd_start (virtual load address)
|
||||
# a4 initrd_end (virtual load address)
|
||||
|
||||
movi a0, _image_start
|
||||
jx a0
|
||||
|
||||
.align 16
|
||||
.data
|
||||
.globl avail_ram
|
||||
avail_ram:
|
||||
.long _heap
|
||||
.globl end_avail
|
||||
end_avail:
|
||||
.long _heap + HEAP_SIZE
|
||||
|
||||
.comm _stack, STACK_SIZE
|
||||
.comm _heap, HEAP_SIZE
|
||||
|
||||
.globl end_avail
|
||||
.comm complen, 4
|
||||
|
||||
.end literal_prefix
|
||||
|
|
@ -0,0 +1,433 @@
|
|||
/*
|
||||
* BK Id: SCCS/s.zlib.h 1.8 05/18/01 15:17:23 cort
|
||||
*/
|
||||
/*
|
||||
* This file is derived from zlib.h and zconf.h from the zlib-0.95
|
||||
* distribution by Jean-loup Gailly and Mark Adler, with some additions
|
||||
* by Paul Mackerras to aid in implementing Deflate compression and
|
||||
* decompression for PPP packets.
|
||||
*/
|
||||
|
||||
/*
|
||||
* ==FILEVERSION 960122==
|
||||
*
|
||||
* This marker is used by the Linux installation script to determine
|
||||
* whether an up-to-date version of this file is already installed.
|
||||
*/
|
||||
|
||||
/* zlib.h -- interface of the 'zlib' general purpose compression library
|
||||
version 0.95, Aug 16th, 1995.
|
||||
|
||||
Copyright (C) 1995 Jean-loup Gailly and Mark Adler
|
||||
|
||||
This software is provided 'as-is', without any express or implied
|
||||
warranty. In no event will the authors be held liable for any damages
|
||||
arising from the use of this software.
|
||||
|
||||
Permission is granted to anyone to use this software for any purpose,
|
||||
including commercial applications, and to alter it and redistribute it
|
||||
freely, subject to the following restrictions:
|
||||
|
||||
1. The origin of this software must not be misrepresented; you must not
|
||||
claim that you wrote the original software. If you use this software
|
||||
in a product, an acknowledgment in the product documentation would be
|
||||
appreciated but is not required.
|
||||
2. Altered source versions must be plainly marked as such, and must not be
|
||||
misrepresented as being the original software.
|
||||
3. This notice may not be removed or altered from any source distribution.
|
||||
|
||||
Jean-loup Gailly Mark Adler
|
||||
gzip@prep.ai.mit.edu madler@alumni.caltech.edu
|
||||
*/
|
||||
|
||||
#ifndef _ZLIB_H
|
||||
#define _ZLIB_H
|
||||
|
||||
/* #include "zconf.h" */ /* included directly here */
|
||||
|
||||
/* zconf.h -- configuration of the zlib compression library
|
||||
* Copyright (C) 1995 Jean-loup Gailly.
|
||||
* For conditions of distribution and use, see copyright notice in zlib.h
|
||||
*/
|
||||
|
||||
/* From: zconf.h,v 1.12 1995/05/03 17:27:12 jloup Exp */
|
||||
|
||||
/*
|
||||
The library does not install any signal handler. It is recommended to
|
||||
add at least a handler for SIGSEGV when decompressing; the library checks
|
||||
the consistency of the input data whenever possible but may go nuts
|
||||
for some forms of corrupted input.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Compile with -DMAXSEG_64K if the alloc function cannot allocate more
|
||||
* than 64k bytes at a time (needed on systems with 16-bit int).
|
||||
* Compile with -DUNALIGNED_OK if it is OK to access shorts or ints
|
||||
* at addresses which are not a multiple of their size.
|
||||
* Under DOS, -DFAR=far or -DFAR=__far may be needed.
|
||||
*/
|
||||
|
||||
#ifndef STDC
|
||||
# if defined(MSDOS) || defined(__STDC__) || defined(__cplusplus)
|
||||
# define STDC
|
||||
# endif
|
||||
#endif
|
||||
|
||||
#ifdef __MWERKS__ /* Metrowerks CodeWarrior declares fileno() in unix.h */
|
||||
# include <unix.h>
|
||||
#endif
|
||||
|
||||
/* Maximum value for memLevel in deflateInit2 */
|
||||
#ifndef MAX_MEM_LEVEL
|
||||
# ifdef MAXSEG_64K
|
||||
# define MAX_MEM_LEVEL 8
|
||||
# else
|
||||
# define MAX_MEM_LEVEL 9
|
||||
# endif
|
||||
#endif
|
||||
|
||||
#ifndef FAR
|
||||
# define FAR
|
||||
#endif
|
||||
|
||||
/* Maximum value for windowBits in deflateInit2 and inflateInit2 */
|
||||
#ifndef MAX_WBITS
|
||||
# define MAX_WBITS 15 /* 32K LZ77 window */
|
||||
#endif
|
||||
|
||||
/* The memory requirements for deflate are (in bytes):
|
||||
1 << (windowBits+2) + 1 << (memLevel+9)
|
||||
that is: 128K for windowBits=15 + 128K for memLevel = 8 (default values)
|
||||
plus a few kilobytes for small objects. For example, if you want to reduce
|
||||
the default memory requirements from 256K to 128K, compile with
|
||||
make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7"
|
||||
Of course this will generally degrade compression (there's no free lunch).
|
||||
|
||||
The memory requirements for inflate are (in bytes) 1 << windowBits
|
||||
that is, 32K for windowBits=15 (default value) plus a few kilobytes
|
||||
for small objects.
|
||||
*/
|
||||
|
||||
/* Type declarations */
|
||||
|
||||
#ifndef OF /* function prototypes */
|
||||
# ifdef STDC
|
||||
# define OF(args) args
|
||||
# else
|
||||
# define OF(args) ()
|
||||
# endif
|
||||
#endif
|
||||
|
||||
typedef unsigned char Byte; /* 8 bits */
|
||||
typedef unsigned int uInt; /* 16 bits or more */
|
||||
typedef unsigned long uLong; /* 32 bits or more */
|
||||
|
||||
typedef Byte FAR Bytef;
|
||||
typedef char FAR charf;
|
||||
typedef int FAR intf;
|
||||
typedef uInt FAR uIntf;
|
||||
typedef uLong FAR uLongf;
|
||||
|
||||
#ifdef STDC
|
||||
typedef void FAR *voidpf;
|
||||
typedef void *voidp;
|
||||
#else
|
||||
typedef Byte FAR *voidpf;
|
||||
typedef Byte *voidp;
|
||||
#endif
|
||||
|
||||
/* end of original zconf.h */
|
||||
|
||||
#define ZLIB_VERSION "0.95P"
|
||||
|
||||
/*
|
||||
The 'zlib' compression library provides in-memory compression and
|
||||
decompression functions, including integrity checks of the uncompressed
|
||||
data. This version of the library supports only one compression method
|
||||
(deflation) but other algorithms may be added later and will have the same
|
||||
stream interface.
|
||||
|
||||
For compression the application must provide the output buffer and
|
||||
may optionally provide the input buffer for optimization. For decompression,
|
||||
the application must provide the input buffer and may optionally provide
|
||||
the output buffer for optimization.
|
||||
|
||||
Compression can be done in a single step if the buffers are large
|
||||
enough (for example if an input file is mmap'ed), or can be done by
|
||||
repeated calls of the compression function. In the latter case, the
|
||||
application must provide more input and/or consume the output
|
||||
(providing more output space) before each call.
|
||||
*/
|
||||
|
||||
typedef voidpf (*alloc_func) OF((voidpf opaque, uInt items, uInt size));
|
||||
typedef void (*free_func) OF((voidpf opaque, voidpf address, uInt nbytes));
|
||||
|
||||
struct internal_state;
|
||||
|
||||
typedef struct z_stream_s {
|
||||
Bytef *next_in; /* next input byte */
|
||||
uInt avail_in; /* number of bytes available at next_in */
|
||||
uLong total_in; /* total nb of input bytes read so far */
|
||||
|
||||
Bytef *next_out; /* next output byte should be put there */
|
||||
uInt avail_out; /* remaining free space at next_out */
|
||||
uLong total_out; /* total nb of bytes output so far */
|
||||
|
||||
char *msg; /* last error message, NULL if no error */
|
||||
struct internal_state FAR *state; /* not visible by applications */
|
||||
|
||||
alloc_func zalloc; /* used to allocate the internal state */
|
||||
free_func zfree; /* used to free the internal state */
|
||||
voidp opaque; /* private data object passed to zalloc and zfree */
|
||||
|
||||
Byte data_type; /* best guess about the data type: ascii or binary */
|
||||
|
||||
} z_stream;
|
||||
|
||||
/*
|
||||
The application must update next_in and avail_in when avail_in has
|
||||
dropped to zero. It must update next_out and avail_out when avail_out
|
||||
has dropped to zero. The application must initialize zalloc, zfree and
|
||||
opaque before calling the init function. All other fields are set by the
|
||||
compression library and must not be updated by the application.
|
||||
|
||||
The opaque value provided by the application will be passed as the first
|
||||
parameter for calls of zalloc and zfree. This can be useful for custom
|
||||
memory management. The compression library attaches no meaning to the
|
||||
opaque value.
|
||||
|
||||
zalloc must return Z_NULL if there is not enough memory for the object.
|
||||
On 16-bit systems, the functions zalloc and zfree must be able to allocate
|
||||
exactly 65536 bytes, but will not be required to allocate more than this
|
||||
if the symbol MAXSEG_64K is defined (see zconf.h). WARNING: On MSDOS,
|
||||
pointers returned by zalloc for objects of exactly 65536 bytes *must*
|
||||
have their offset normalized to zero. The default allocation function
|
||||
provided by this library ensures this (see zutil.c). To reduce memory
|
||||
requirements and avoid any allocation of 64K objects, at the expense of
|
||||
compression ratio, compile the library with -DMAX_WBITS=14 (see zconf.h).
|
||||
|
||||
The fields total_in and total_out can be used for statistics or
|
||||
progress reports. After compression, total_in holds the total size of
|
||||
the uncompressed data and may be saved for use in the decompressor
|
||||
(particularly if the decompressor wants to decompress everything in
|
||||
a single step).
|
||||
*/
|
||||
|
||||
/* constants */
|
||||
|
||||
#define Z_NO_FLUSH 0
|
||||
#define Z_PARTIAL_FLUSH 1
|
||||
#define Z_FULL_FLUSH 2
|
||||
#define Z_SYNC_FLUSH 3 /* experimental: partial_flush + byte align */
|
||||
#define Z_FINISH 4
|
||||
#define Z_PACKET_FLUSH 5
|
||||
/* See deflate() below for the usage of these constants */
|
||||
|
||||
#define Z_OK 0
|
||||
#define Z_STREAM_END 1
|
||||
#define Z_ERRNO (-1)
|
||||
#define Z_STREAM_ERROR (-2)
|
||||
#define Z_DATA_ERROR (-3)
|
||||
#define Z_MEM_ERROR (-4)
|
||||
#define Z_BUF_ERROR (-5)
|
||||
/* error codes for the compression/decompression functions */
|
||||
|
||||
#define Z_BEST_SPEED 1
|
||||
#define Z_BEST_COMPRESSION 9
|
||||
#define Z_DEFAULT_COMPRESSION (-1)
|
||||
/* compression levels */
|
||||
|
||||
#define Z_FILTERED 1
|
||||
#define Z_HUFFMAN_ONLY 2
|
||||
#define Z_DEFAULT_STRATEGY 0
|
||||
|
||||
#define Z_BINARY 0
|
||||
#define Z_ASCII 1
|
||||
#define Z_UNKNOWN 2
|
||||
/* Used to set the data_type field */
|
||||
|
||||
#define Z_NULL 0 /* for initializing zalloc, zfree, opaque */
|
||||
|
||||
extern char *zlib_version;
|
||||
/* The application can compare zlib_version and ZLIB_VERSION for consistency.
|
||||
If the first character differs, the library code actually used is
|
||||
not compatible with the zlib.h header file used by the application.
|
||||
*/
|
||||
|
||||
/* basic functions */
|
||||
|
||||
extern int inflateInit OF((z_stream *strm));
|
||||
/*
|
||||
Initializes the internal stream state for decompression. The fields
|
||||
zalloc and zfree must be initialized before by the caller. If zalloc and
|
||||
zfree are set to Z_NULL, inflateInit updates them to use default allocation
|
||||
functions.
|
||||
|
||||
inflateInit returns Z_OK if success, Z_MEM_ERROR if there was not
|
||||
enough memory. msg is set to null if there is no error message.
|
||||
inflateInit does not perform any decompression: this will be done by
|
||||
inflate().
|
||||
*/
|
||||
|
||||
|
||||
extern int inflate OF((z_stream *strm, int flush));
|
||||
/*
|
||||
Performs one or both of the following actions:
|
||||
|
||||
- Decompress more input starting at next_in and update next_in and avail_in
|
||||
accordingly. If not all input can be processed (because there is not
|
||||
enough room in the output buffer), next_in is updated and processing
|
||||
will resume at this point for the next call of inflate().
|
||||
|
||||
- Provide more output starting at next_out and update next_out and avail_out
|
||||
accordingly. inflate() always provides as much output as possible
|
||||
(until there is no more input data or no more space in the output buffer).
|
||||
|
||||
Before the call of inflate(), the application should ensure that at least
|
||||
one of the actions is possible, by providing more input and/or consuming
|
||||
more output, and updating the next_* and avail_* values accordingly.
|
||||
The application can consume the uncompressed output when it wants, for
|
||||
example when the output buffer is full (avail_out == 0), or after each
|
||||
call of inflate().
|
||||
|
||||
If the parameter flush is set to Z_PARTIAL_FLUSH or Z_PACKET_FLUSH,
|
||||
inflate flushes as much output as possible to the output buffer. The
|
||||
flushing behavior of inflate is not specified for values of the flush
|
||||
parameter other than Z_PARTIAL_FLUSH, Z_PACKET_FLUSH or Z_FINISH, but the
|
||||
current implementation actually flushes as much output as possible
|
||||
anyway. For Z_PACKET_FLUSH, inflate checks that once all the input data
|
||||
has been consumed, it is expecting to see the length field of a stored
|
||||
block; if not, it returns Z_DATA_ERROR.
|
||||
|
||||
inflate() should normally be called until it returns Z_STREAM_END or an
|
||||
error. However if all decompression is to be performed in a single step
|
||||
(a single call of inflate), the parameter flush should be set to
|
||||
Z_FINISH. In this case all pending input is processed and all pending
|
||||
output is flushed; avail_out must be large enough to hold all the
|
||||
uncompressed data. (The size of the uncompressed data may have been saved
|
||||
by the compressor for this purpose.) The next operation on this stream must
|
||||
be inflateEnd to deallocate the decompression state. The use of Z_FINISH
|
||||
is never required, but can be used to inform inflate that a faster routine
|
||||
may be used for the single inflate() call.
|
||||
|
||||
inflate() returns Z_OK if some progress has been made (more input
|
||||
processed or more output produced), Z_STREAM_END if the end of the
|
||||
compressed data has been reached and all uncompressed output has been
|
||||
produced, Z_DATA_ERROR if the input data was corrupted, Z_STREAM_ERROR if
|
||||
the stream structure was inconsistent (for example if next_in or next_out
|
||||
was NULL), Z_MEM_ERROR if there was not enough memory, Z_BUF_ERROR if no
|
||||
progress is possible or if there was not enough room in the output buffer
|
||||
when Z_FINISH is used. In the Z_DATA_ERROR case, the application may then
|
||||
call inflateSync to look for a good compression block. */
|
||||
|
||||
|
||||
extern int inflateEnd OF((z_stream *strm));
|
||||
/*
|
||||
All dynamically allocated data structures for this stream are freed.
|
||||
This function discards any unprocessed input and does not flush any
|
||||
pending output.
|
||||
|
||||
inflateEnd returns Z_OK if success, Z_STREAM_ERROR if the stream state
|
||||
was inconsistent. In the error case, msg may be set but then points to a
|
||||
static string (which must not be deallocated).
|
||||
*/
|
||||
|
||||
/* advanced functions */
|
||||
|
||||
extern int inflateInit2 OF((z_stream *strm,
|
||||
int windowBits));
|
||||
/*
|
||||
This is another version of inflateInit with more compression options. The
|
||||
fields next_out, zalloc and zfree must be initialized before by the caller.
|
||||
|
||||
The windowBits parameter is the base two logarithm of the maximum window
|
||||
size (the size of the history buffer). It should be in the range 8..15 for
|
||||
this version of the library (the value 16 will be allowed soon). The
|
||||
default value is 15 if inflateInit is used instead. If a compressed stream
|
||||
with a larger window size is given as input, inflate() will return with
|
||||
the error code Z_DATA_ERROR instead of trying to allocate a larger window.
|
||||
|
||||
If next_out is not null, the library will use this buffer for the history
|
||||
buffer; the buffer must either be large enough to hold the entire output
|
||||
data, or have at least 1<<windowBits bytes. If next_out is null, the
|
||||
library will allocate its own buffer (and leave next_out null). next_in
|
||||
need not be provided here but must be provided by the application for the
|
||||
next call of inflate().
|
||||
|
||||
If the history buffer is provided by the application, next_out must
|
||||
never be changed by the application since the decompressor maintains
|
||||
history information inside this buffer from call to call; the application
|
||||
can only reset next_out to the beginning of the history buffer when
|
||||
avail_out is zero and all output has been consumed.
|
||||
|
||||
inflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was
|
||||
not enough memory, Z_STREAM_ERROR if a parameter is invalid (such as
|
||||
windowBits < 8). msg is set to null if there is no error message.
|
||||
inflateInit2 does not perform any decompression: this will be done by
|
||||
inflate().
|
||||
*/
|
||||
|
||||
extern int inflateSync OF((z_stream *strm));
|
||||
/*
|
||||
Skips invalid compressed data until the special marker (see deflate()
|
||||
above) can be found, or until all available input is skipped. No output
|
||||
is provided.
|
||||
|
||||
inflateSync returns Z_OK if the special marker has been found, Z_BUF_ERROR
|
||||
if no more input was provided, Z_DATA_ERROR if no marker has been found,
|
||||
or Z_STREAM_ERROR if the stream structure was inconsistent. In the success
|
||||
case, the application may save the current current value of total_in which
|
||||
indicates where valid compressed data was found. In the error case, the
|
||||
application may repeatedly call inflateSync, providing more input each time,
|
||||
until success or end of the input data.
|
||||
*/
|
||||
|
||||
extern int inflateReset OF((z_stream *strm));
|
||||
/*
|
||||
This function is equivalent to inflateEnd followed by inflateInit,
|
||||
but does not free and reallocate all the internal decompression state.
|
||||
The stream will keep attributes that may have been set by inflateInit2.
|
||||
|
||||
inflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source
|
||||
stream state was inconsistent (such as zalloc or state being NULL).
|
||||
*/
|
||||
|
||||
extern int inflateIncomp OF((z_stream *strm));
|
||||
/*
|
||||
This function adds the data at next_in (avail_in bytes) to the output
|
||||
history without performing any output. There must be no pending output,
|
||||
and the decompressor must be expecting to see the start of a block.
|
||||
Calling this function is equivalent to decompressing a stored block
|
||||
containing the data at next_in (except that the data is not output).
|
||||
*/
|
||||
|
||||
/* checksum functions */
|
||||
|
||||
/*
|
||||
This function is not related to compression but is exported
|
||||
anyway because it might be useful in applications using the
|
||||
compression library.
|
||||
*/
|
||||
|
||||
extern uLong adler32 OF((uLong adler, Bytef *buf, uInt len));
|
||||
|
||||
/*
|
||||
Update a running Adler-32 checksum with the bytes buf[0..len-1] and
|
||||
return the updated checksum. If buf is NULL, this function returns
|
||||
the required initial value for the checksum.
|
||||
An Adler-32 checksum is almost as reliable as a CRC32 but can be computed
|
||||
much faster. Usage example:
|
||||
|
||||
uLong adler = adler32(0L, Z_NULL, 0);
|
||||
|
||||
while (read_buffer(buffer, length) != EOF) {
|
||||
adler = adler32(adler, buffer, length);
|
||||
}
|
||||
if (adler != original_adler) error();
|
||||
*/
|
||||
|
||||
#ifndef _Z_UTIL_H
|
||||
struct internal_state {int dummy;}; /* hack for buggy compilers */
|
||||
#endif
|
||||
|
||||
#endif /* _ZLIB_H */
|
||||
|
|
@ -0,0 +1,6 @@
|
|||
#
|
||||
# Makefile for some libs needed by zImage.
|
||||
#
|
||||
|
||||
|
||||
lib-y := zlib.o zmem.o
|
||||
|
|
@ -0,0 +1,36 @@
|
|||
/*
|
||||
* arch/xtensa/lib/memcpy.S
|
||||
*
|
||||
* ANSI C standard library function memcpy
|
||||
*
|
||||
* 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) 2002 Tensilica Inc.
|
||||
*/
|
||||
|
||||
#define _ASMLANGUAGE
|
||||
#include <xtensa/config/core.h>
|
||||
|
||||
.text
|
||||
.align 4
|
||||
.global bcopy
|
||||
.type bcopy,@function
|
||||
bcopy:
|
||||
movi a14, xthal_bcopy // a14 safe to use regardless of whether caller
|
||||
// used call4 or call8 (can't have used call12)
|
||||
jx a14 // let the Core HAL do the work
|
||||
|
||||
.text
|
||||
.align 4
|
||||
.global memcpy
|
||||
.type memcpy,@function
|
||||
memcpy:
|
||||
.global memmove
|
||||
.type memmove,@function
|
||||
memmove:
|
||||
movi a14, xthal_memcpy // a14 safe to use regardless of whether caller
|
||||
// used call4 or call8 (can't have used call12)
|
||||
jx a14 // let the Core HAL do the work
|
||||
|
||||
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,87 @@
|
|||
#include "zlib.h"
|
||||
|
||||
/* bits taken from ppc */
|
||||
|
||||
extern void *avail_ram, *end_avail;
|
||||
|
||||
void exit (void)
|
||||
{
|
||||
for (;;);
|
||||
}
|
||||
|
||||
void *zalloc(void *x, unsigned items, unsigned size)
|
||||
{
|
||||
void *p = avail_ram;
|
||||
|
||||
size *= items;
|
||||
size = (size + 7) & -8;
|
||||
avail_ram += size;
|
||||
if (avail_ram > end_avail) {
|
||||
//puts("oops... out of memory\n");
|
||||
//pause();
|
||||
exit ();
|
||||
}
|
||||
return p;
|
||||
}
|
||||
|
||||
void zfree(void *x, void *addr, unsigned nb)
|
||||
{
|
||||
}
|
||||
|
||||
|
||||
#define HEAD_CRC 2
|
||||
#define EXTRA_FIELD 4
|
||||
#define ORIG_NAME 8
|
||||
#define COMMENT 0x10
|
||||
#define RESERVED 0xe0
|
||||
|
||||
#define DEFLATED 8
|
||||
|
||||
void gunzip (void *dst, int dstlen, unsigned char *src, int *lenp)
|
||||
{
|
||||
z_stream s;
|
||||
int r, i, flags;
|
||||
|
||||
/* skip header */
|
||||
|
||||
i = 10;
|
||||
flags = src[3];
|
||||
if (src[2] != DEFLATED || (flags & RESERVED) != 0) {
|
||||
//puts("bad gzipped data\n");
|
||||
exit();
|
||||
}
|
||||
if ((flags & EXTRA_FIELD) != 0)
|
||||
i = 12 + src[10] + (src[11] << 8);
|
||||
if ((flags & ORIG_NAME) != 0)
|
||||
while (src[i++] != 0)
|
||||
;
|
||||
if ((flags & COMMENT) != 0)
|
||||
while (src[i++] != 0)
|
||||
;
|
||||
if ((flags & HEAD_CRC) != 0)
|
||||
i += 2;
|
||||
if (i >= *lenp) {
|
||||
//puts("gunzip: ran out of data in header\n");
|
||||
exit();
|
||||
}
|
||||
|
||||
s.zalloc = zalloc;
|
||||
s.zfree = zfree;
|
||||
r = inflateInit2(&s, -MAX_WBITS);
|
||||
if (r != Z_OK) {
|
||||
//puts("inflateInit2 returned "); puthex(r); puts("\n");
|
||||
exit();
|
||||
}
|
||||
s.next_in = src + i;
|
||||
s.avail_in = *lenp - i;
|
||||
s.next_out = dst;
|
||||
s.avail_out = dstlen;
|
||||
r = inflate(&s, Z_FINISH);
|
||||
if (r != Z_OK && r != Z_STREAM_END) {
|
||||
//puts("inflate returned "); puthex(r); puts("\n");
|
||||
exit();
|
||||
}
|
||||
*lenp = s.next_out - (unsigned char *) dst;
|
||||
inflateEnd(&s);
|
||||
}
|
||||
|
||||
|
|
@ -0,0 +1,23 @@
|
|||
#
|
||||
# Makefile for a ramdisk image
|
||||
#
|
||||
|
||||
BIG_ENDIAN := $(shell echo -e "\#ifdef __XTENSA_EL__\nint little;\n\#else\nint big;\n\#endif" | $(CC) -E -|grep -c big)
|
||||
|
||||
ifeq ($(BIG_ENDIAN),1)
|
||||
OBJCOPY_ARGS := -O elf32-xtensa-be
|
||||
else
|
||||
OBJCOPY_ARGS := -O elf32-xtensa-le
|
||||
endif
|
||||
|
||||
obj-y = ramdisk.o
|
||||
|
||||
RAMDISK_IMAGE = arch/$(ARCH)/boot/ramdisk/$(CONFIG_EMBEDDED_RAMDISK_IMAGE)
|
||||
|
||||
arch/$(ARCH)/boot/ramdisk/ramdisk.o:
|
||||
$(Q)echo -e "dummy:" | $(AS) -o $@;
|
||||
$(Q)$(OBJCOPY) $(OBJCOPY_ARGS) \
|
||||
--add-section .initrd=$(RAMDISK_IMAGE) \
|
||||
--set-section-flags .initrd=contents,alloc,load,load,data \
|
||||
arch/$(ARCH)/boot/ramdisk/ramdisk.o $@
|
||||
|
||||
Loading…
Reference in New Issue