[linux-cirrus] Re: Building Nucleusys tool chain on the target
- From: "Bhushan Kolarkar" <Bhushan.Kolarkar@xxxxxxx>
- To: linux-cirrus@xxxxxxxxxxxxx
- Date: Thu, 26 May 2005 15:52:34 +0530
Hi Yann,
From where can I down load mkimage utility to run on linux.
Your suggestion would be of great help
Thanks and Regards
Bhushan
|---------+--------------------------------->
| | "Yann Poupet" |
| | <yann.poupet@xxxxxxx> |
| | Sent by: |
| | linux-cirrus-bounce@fr|
| | eelists.org |
| | |
| | |
| | 05/25/2005 03:02 PM |
| | Please respond to |
| | linux-cirrus |
| | |
|---------+--------------------------------->
>------------------------------------------------------------------------------------------------------------------------------|
|
|
| To: linux-cirrus@xxxxxxxxxxxxx
|
| cc:
|
| Subject: [linux-cirrus] Re: Building Nucleusys tool chain on the
target |
>------------------------------------------------------------------------------------------------------------------------------|
Hi Bhushan,
I've never tried RAMFS, so I'm not sure what this should contain.
But according to
http://www.mail-archive.com/debian-user-german@xxxxxxxxxxxxxxxx/msg125087.html
================================================================
CONFIG_INITRAMFS_SOURCE:
This can be either a single cpio archive with a .cpio suffix or a
space-separated list of directories and files for building the
initramfs image. A cpio archive should contain a filesystem archive
to be used as an initramfs image. Directories should contain a
filesystem layout to be included in the initramfs image. Files
should contain entries according to the format described by the
"usr/gen_init_cpio" program in the kernel tree.
When multiple directories and files are specified then the
initramfs image will be the aggregate of all of them.
See <file:Documentation/early-userspace/README for more details.
================================================================
So yes, it seems it should be a list of files, not "Y" ...
Regards
Yann
> Hi Yann,
> grep CONFIG_INITRAMFS_SOURCE .config
> => CONFIG_INITRAMFS_SOURCE="Y"
> This is what I got in .config
> But i think this should have list of files going in to ram file system.
> am I correct.
> Thanks and Regards
> Bhushan
>
>
> |---------+--------------------------------->
> | | "Yann Poupet" |
> | | <yann.poupet@xxxxxxx> |
> | | Sent by: |
> | | linux-cirrus-bounce@fr|
> | | eelists.org |
> | | |
> | | |
> | | 05/25/2005 02:14 PM |
> | | Please respond to |
> | | linux-cirrus |
> | | |
> |---------+--------------------------------->
>
>
>------------------------------------------------------------------------------------------------------------------------------|
> |
> |
> | To: linux-cirrus@xxxxxxxxxxxxx
> |
> | cc:
> |
> | Subject: [linux-cirrus] Re: Building Nucleusys tool chain on the
> target |
>
>
>------------------------------------------------------------------------------------------------------------------------------|
>
>
>
>
> Hi Bhushan,
>
> What do you have in you kernel configuration for CONFIG_INITRAMFS_SOURCE ?
> If you can't find it in the configuration utility menu, you can try
>
> grep CONFIG_INITRAMFS_SOURCE .config
>
> at the top level of your kernel dir
>
> Regards
>
> Yann
>
> Selon Bhushan Kolarkar <Bhushan.Kolarkar@xxxxxxx>:
>
> > Hi All,
> > I am trying to build Linux-2.6.11.7 kernel for arm i have configured the
> > kernel
> > and trying to build I am getting following Error
> >
> > CHK usr/initramfs_list
> > /home/white/arm/arm-linux/linux-2.6.11.7/scripts/gen_initramfs_list.sh:
> > Cannot
> > open 'y'
> > make[1]: *** [usr/initramfs_list] Error 1
> > make: *** [usr] Error 2
> > Can some one suggest how to fix this,
> > Your suggestions will be of great help,
> >
> > Thanks and Regards
> > Bhushan Kolarkar
> >
> >
> >
> > |---------+--------------------------------->
> > | | "yann poupet" |
> > | | <yann.poupet@xxxxxxx> |
> > | | Sent by: |
> > | | linux-cirrus-bounce@fr|
> > | | eelists.org |
> > | | |
> > | | |
> > | | 05/25/2005 12:08 PM |
> > | | Please respond to |
> > | | linux-cirrus |
> > | | |
> > |---------+--------------------------------->
> >
> >
>
>------------------------------------------------------------------------------------------------------------------------------|
>
> > |
> > |
> > | To: Bhushan.Kolarkar@xxxxxxx, linux-cirrus@xxxxxxxxxxxxx
> > |
> > | cc:
> > |
> > | Subject: [linux-cirrus] Re: Building Nucleusys tool chain on the
> > target |
> >
> >
>
>------------------------------------------------------------------------------------------------------------------------------|
>
> >
> >
> >
> >
> > Hi,
> >
> > I've just checked, the patch is here :
> > http://yann.poupet.free.fr/ep93xx/linux-2.6.11.7-ep93xx-eb.patch
> >
> > If you haven't found the patch, that may be the problem if it has not
> > been applied.
> > But maybe you problem comes from something else. I can see it is ramfs
> > related, and I have never tried to use ramfs.
> > Having a quick look at the file gen_initramfs_list.sh which seems to be
> > the source of the problem, I can see that this error message is :
> >
> > echo " $0: Cannot open '$cpio_source'"
> >
> > So, your cpio_source is certainly declared as 'y', which is certainly
> > not a valid cpio_source.
> >
> > I send you the patch attached with this email.
> >
> > Regards
> >
> > Yann
> >
> > Bhushan Kolarkar wrote:
> >
> > >Hi Yann,
> > >
> > >I have down loaded the linux-2.6.11.7
> > >from http://yann.poupet.free.fr/ep93xx/ but could not find the patch
> > >linux-2.6.11.7-ep93xx-eb.patch you mentaioned in the link.
> > >I configured the kernel and tried building
> > >I am getting following error
> > > CHK usr/initramfs_list
> > > /home/white/arm/arm-linux/linux-2.6.11.7/scripts/gen_initramfs_list.sh:
> > Cannot
> > >open 'y'
> > >make[1]: *** [usr/initramfs_list] Error 1
> > >what could be the problem
> > >Your suggestion would be of great help,
> > >Thanks and regards,
> > >Bhushan Kolarkar
> > >
> > >
> > >
> > >|---------+--------------------------------->
> > >| | "yann poupet" |
> > >| | <yann.poupet@xxxxxxx> |
> > >| | Sent by: |
> > >| | linux-cirrus-bounce@fr|
> > >| | eelists.org |
> > >| | |
> > >| | |
> > >| | 05/24/2005 11:23 PM |
> > >| | Please respond to |
> > >| | linux-cirrus |
> > >| | |
> > >|---------+--------------------------------->
> > >
> >
>
>------------------------------------------------------------------------------------------------------------------------------|
>
> >
> > > |
> > |
> > > | To: linux-cirrus@xxxxxxxxxxxxx
> > |
> > > | cc:
> > |
> > > | Subject: [linux-cirrus] Re: Building Nucleusys tool chain on
> the
> > target |
> > >
> >
>
>------------------------------------------------------------------------------------------------------------------------------|
>
> >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >>I've posted on my personnal website a quick-made howto about how I got it
> > >>working.
> > >>
> > >>http://yann.poupet.free.fr/ep93xx/
> > >>
> > >>The links in the second part are broken (the scripts and patches) because
> I
> > >>don't have access to the file right now. I'll put them on the website
> > tonight
> > >>when I'm back home.
> > >>
> > >>
> > >>
> > >>
> > >>
> > >
> > >Done, script & patches available.
> > >
> > >Feel free to ask if something goes wrong.
> > >
> > >Regards
> > >
> > >Yann
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> >
> > diff -urN linux-2.6.11.7/arch/arm/kernel/entry-armv.S
> > linux-2.6.11.7-eb/arch/arm/kernel/entry-armv.S
> > --- linux-2.6.11.7/arch/arm/kernel/entry-armv.S 2005-04-07
> > 20:57:28.000000000 +0200
> > +++ linux-2.6.11.7-eb/arch/arm/kernel/entry-armv.S 2005-05-12
> > 20:02:14.000000000 +0200
> > @@ -188,6 +188,12 @@
> > @
> > @ r0 - instruction
> > @
> > +#ifdef CONFIG_EP93XX_CRUNCH
> > + mov r0, sp
> > + bl crunch_opcode
> > + cmp r0, #1
> > + beq 1f
> > +#endif
> > ldr r0, [r2, #-4]
> > adr r9, 1f
> > bl call_fpe
> > @@ -353,6 +359,15 @@
> > tst r3, #PSR_T_BIT @
> > Thumb
> > mode?
> > bne fpundefinstr @
> > ignore FP
> > sub r4, r2, #4
> > +#ifdef CONFIG_EP93XX_CRUNCH
> > +@ bl crunch_in
> > + mov r0, sp
> > + bl crunch_opcode
> > +@ bl crunch_out
> > + cmp r0, #1
> > + beq ret_from_exception
> > +#endif
> > +@ bl crunch_out
> >
> > @
> > @ fall through to the emulation code, which returns using r9
> if
> > @@ -476,6 +491,7 @@
> > * This is the return code to user mode for abort handlers
> > */
> > ENTRY(ret_from_exception)
> > +@ bl crunch_out2
> > get_thread_info tsk
> > mov why, #0
> > b ret_to_user
> > diff -urN linux-2.6.11.7/arch/arm/kernel/setup.c
> > linux-2.6.11.7-eb/arch/arm/kernel/setup.c
> > --- linux-2.6.11.7/arch/arm/kernel/setup.c 2005-04-07
> > 20:57:42.000000000 +0200
> > +++ linux-2.6.11.7-eb/arch/arm/kernel/setup.c 2005-05-12
> > 20:03:40.000000000 +0200
> > @@ -314,6 +314,9 @@
> > sprintf(system_utsname.machine, "%s%c", list->arch_name,
> > ENDIANNESS);
> > sprintf(elf_platform, "%s%c", list->elf_name, ENDIANNESS);
> > elf_hwcap = list->elf_hwcap;
> > +#ifdef CONFIG_EP93XX_CRUNCH
> > + elf_hwcap |= HWCAP_CRUNCH;
> > +#endif
> >
> > cpu_proc_init();
> > }
> > @@ -756,6 +759,7 @@
> > "vfp",
> > "edsp",
> > "java",
> > + "crunch",
> > NULL
> > };
> >
> > diff -urN linux-2.6.11.7/arch/arm/mach-ep93xx/crunch.c
> > linux-2.6.11.7-eb/arch/arm/mach-ep93xx/crunch.c
> > --- linux-2.6.11.7/arch/arm/mach-ep93xx/crunch.c 1970-01-01
> > 01:00:00.000000000 +0100
> > +++ linux-2.6.11.7-eb/arch/arm/mach-ep93xx/crunch.c 2005-05-15
> > 22:32:52.000000000 +0200
> > @@ -0,0 +1,343 @@
> > +/*
> > + * Cirrus MaverickCrunch support
> > + *
> > + * Copyright (c) 2003 Petko Manolov <petkan@xxxxxxxxxxxxx>
> > + *
> > + * This program is free software; you can redistribute it and/or
> > + * modify it under the terms of the GNU General Public License
> > + * version 2 as published by the Free Software Foundation;
> > + */
> > +
> > +#include <linux/sched.h>
> > +#include <linux/init.h>
> > +#include <asm/io.h>
> > +#include <asm/arch/crunch.h>
> > +
> > +unsigned int read_dspsc_low(void)
> > +{
> > + int res;
> > +
> > + asm volatile (
> > + "cdp p4, 1, c15, c0, c0, 7\n\t" // "cfmv32sc
> > mvdx15, dspsc\n\t"
> > + "mrc p5, 0, %0, c15, c0, 0" // "cfmvr64l %0,
> > mvdx15"
> > + :"=r" (res)
> > + :
> > + :"memory");
> > +
> > + return res;
> > +}
> > +
> > +unsigned int read_dspsc_high(void)
> > +{
> > + int res;
> > +
> > + asm volatile (
> > + "cdp p4, 1, c15, c0, c0, 7\n\t" // "cfmv32sc
> > mvdx15, dspsc\n\t"
> > + "mrc p5, 0, %0, c15, c0, 1" // "cfmvr64h %0,
> > mvdx15"
> > + :"=r" (res)
> > + :
> > + :"memory");
> > +
> > + return res;
> > +}
> > +
> > +void write_dspsc(unsigned int dspsc)
> > +{
> > + asm volatile (
> > + "mcr p5, 0, %0, c15, c0, 0\n\t" // "cfmv64lr
> > mvdx15, %0\n\t"
> > + "cdp p4, 2, c15, c0, c0, 7" // "cfmvsc32
> > dspsc,
> > mvdx15"
> > + :
> > + :"r" (dspsc), "rN"(-1)
> > + :"memory");
> > +}
> > +
> > +void crunch_init(void)
> > +{
> > + write_dspsc(CRUNCH_INIT);
> > + current->flags |= PF_USEDCRUNCH;
> > +}
> > +
> > +/*
> > + * had to do it this way since "clf(); cli();" takes longer
> > + */
> > +static inline void clear_fiq_irq(void)
> > +{
> > + int cpsr;
> > +
> > + asm volatile (
> > + "mrs %0, CPSR\n\t"
> > + "orr %0, %0, #192\n\t"
> > + "msr CPSR_c, %0"
> > + :"=r" (cpsr)
> > + :
> > + :"memory");
> > +}
> > +
> > +/*
> > + * had to do it this way since "stf(); sti();" takes (twice) longer
> > + */
> > +
> > +static inline void restore_fiq_irq(void)
> > +{
> > + int cpsr;
> > +
> > + asm volatile (
> > + "mrs %0, CPSR\n\t"
> > + "bic %0, %0, #192\n\t"
> > + "msr CPSR_c, %0"
> > + :"=r" (cpsr)
> > + :
> > + :"memory");
> > +}
> > +
> > +#ifdef CONFIG_EP93XX_CRUNCH_ACC
> > +static inline void save_accumulators(struct task_struct *tsk)
> > +{
> > + int tmp;
> > + struct fp_crunch_struct *fp =
> &tsk->thread_info->fpstate.crunch;
> > +
> > + /*
> > + * clear the IRQ & FIQ to avoid some of the bugs in the errata
> > + */
> > + clear_fiq_irq();
> > +
> > + asm volatile (
> > + "cdp p4, 1, c0, c0, c0, 2\n\t" // "cfmv32al
> > mvfx0, mvax0\n\t"
> > + "stc p5, c0, [%0], #4\n\t" // "cfstr32
> > mvfx0,
> > [%0], 4\n\t"
> > + "cdp p4, 1, c1, c0, c0, 3\n\t" // "cfmv32am
> > mvfx1, mvax0\n\t"
> > + "stc p5, c1, [%0], #4\n\t" // "cfstr32
> > mvfx1,
> > [%0], 4\n\t"
> > + "cdp p4, 1, c2, c0, c0, 4\n\t" // "cfmv32ah
> > mvfx2, mvax0\n\t"
> > + "stc p5, c2, [%0], #4\n\t" // "cfstr32
> > mvfx2,
> > [%0], 4\n\t"
> > + "cdp p4, 1, c3, c1, c0, 2\n\t" // "cfmv32al
> > mvfx3, mvax1\n\t"
> > + "stc p5, c3, [%0], #4\n\t" // "cfstr32
> > mvfx3,
> > [%0], 4\n\t"
> > + "cdp p4, 1, c4, c1, c0, 3\n\t" // "cfmv32am
> > mvfx4, mvax1\n\t"
> > + "stc p5, c4, [%0], #4\n\t" // "cfstr32
> > mvfx4,
> > [%0], 4\n\t"
> > + "cdp p4, 1, c5, c1, c0, 4\n\t" // "cfmv32ah
> > mvfx5, mvax1\n\t"
> > + "stc p5, c5, [%0], #4\n\t" // "cfstr32
> > mvfx5,
> > [%0], 4\n\t"
> > + "cdp p4, 1, c6, c2, c0, 2\n\t" // "cfmv32al
> > mvfx6, mvax2\n\t"
> > + "stc p5, c6, [%0], #4\n\t" // "cfstr32
> > mvfx6,
> > [%0], 4\n\t"
> > + "cdp p4, 1, c7, c2, c0, 3\n\t" // "cfmv32am
> > mvfx7, mvax2\n\t"
> > + "stc p5, c7, [%0], #4\n\t" // "cfstr32
> > mvfx7,
> > [%0], 4\n\t"
> > + "cdp p4, 1, c8, c2, c0, 4\n\t" // "cfmv32ah
> > mvfx8, mvax2\n\t"
> > + "stc p5, c8, [%0], #4\n\t" // "cfstr32
> > mvfx8,
> > [%0], 4\n\t"
> > + "cdp p4, 1, c9, c3, c0, 2\n\t" // "cfmv32al
> > mvfx9, mvax3\n\t"
> > + "stc p5, c9, [%0], #4\n\t" // "cfstr32
> > mvfx9,
> > [%0], 4\n\t"
> > + "cdp p4, 1, c10, c3, c0, 3\n\t" // "cfmv32am
> > mvfx10, mvax3\n\t"
> > + "stc p5,c10, [%0], #4\n\t" // "cfstr32
> > mvfx10,
> > [%0], 4\n\t"
> > + "cdp p4, 1, c11, c3, c0, 4\n\t" // "cfmv32ah
> > mvfx11, mvax3\n\t"
> > + "stc p5, c11, [%0, #0]" //
> > "cfstr32
> > mvfx11, [%0, #0]"
> > + :"=&r" (tmp)
> > + :"0" (&fp->acc0[0])
> > + :"memory");
> > +
> > + restore_fiq_irq();
> > +}
> > +#endif
> > +
> > +#ifdef CONFIG_EP93XX_CRUNCH_ACC
> > +static inline void restore_accumulators(struct task_struct *tsk)
> > +{
> > + int tmp;
> > + struct fp_crunch_struct *fp =
> &tsk->thread_info->fpstate.crunch;
> > +
> > +
> > /*
> > +
> > * clear the IRQ & FIQ to avoid some
> of
> > the
> > bugs in the errata
> > +
> > */
> > +
> > clear_fiq_irq();
> > +
> > +
> > asm volatile (
> > + "ldc p5, c0, [%0],#4\n\t" // "cfldr32
> > mvfx0,
> > [%0], 4\n\t"
> > + "cdp p4, 2, c0, c0, c0, 2\n\t" // "cfmval32
> > mvax0, mvfx0\n\t"
> > + "ldc p5, c1, [%0],#4\n\t" // "cfldr32
> > mvfx1,
> > [%0], 4\n\t"
> > + "cdp p4, 2, c0, c1, c0, 3\n\t" // "cfmvam32
> > mvax0, mvfx1\n\t"
> > + "ldc p5, c2, [%0],#4\n\t" // "cfldr32
> > mvfx2,
> > [%0], 4\n\t"
> > + "cdp p4, 2, c0, c2, c0, 4\n\t" // "cfmvah32
> > mvax0, mvfx2\n\t"
> > + "ldc p5, c3, [%0],#4\n\t" // "cfldr32
> > mvfx3,
> > [%0], 4\n\t"
> > + "cdp p4, 2, c1, c3, c0, 2\n\t" // "cfmval32
> > mvax1, mvfx3\n\t"
> > + "ldc p5, c4, [%0],#4\n\t" // "cfldr32
> > mvfx4,
> > [%0], 4\n\t"
> > + "cdp p4, 2, c1, c4, c0, 3\n\t" // "cfmvam32
> > mvax1, mvfx4\n\t"
> > + "ldc p5, c5, [%0],#4\n\t" // "cfldr32
> > mvfx5,
> > [%0], 4\n\t"
> > + "cdp p4, 2, c1, c5, c0, 4\n\t" // "cfmvah32
> > mvax1, mvfx5\n\t"
> > + "ldc p5, c6, [%0],#4\n\t" // "cfldr32
> > mvfx6,
> > [%0], 4\n\t"
> > + "cdp p4, 2, c2, c6, c0, 2\n\t" // "cfmval32
> > mvax2, mvfx6\n\t"
> > + "ldc p5, c7, [%0],#4\n\t" // "cfldr32
> > mvfx7,
> > [%0], 4\n\t"
> > + "cdp p4, 2, c2, c7, c0, 3\n\t" // "cfmvam32
> > mvax2, mvfx7\n\t"
> > + "ldc p5, c8, [%0],#4\n\t" // "cfldr32
> > mvfx8,
> > [%0], 4\n\t"
> > + "cdp p4, 2, c2, c8, c0, 4\n\t" // "cfmvah32
> > mvax2, mvfx8\n\t"
> > + "ldc p5, c9, [%0],#4\n\t" // "cfldr32
> > mvfx9,
> > [%0], 4\n\t"
> > + "cdp p4, 2, c3, c9, c0, 2\n\t" // "cfmval32
> > mvax3, mvfx9\n\t"
> > + "ldc p5, c10, [%0],#4\n\t" // "cfldr32
> > mvfx10, [%0], 4\n\t"
> > + "cdp p4, 2, c3, c10, c0, 3\n\t" // "cfmvam32
> > mvax3, mvfx10\n\t"
> > + "ldc p5, c11, [%0, #0]\n\t" // "cfldr32
> > mvfx11, [%0, #0]\n\t"
> > + "cdp p4, 2, c3, c11, c0, 4" // "cfmvah32
> > mvax3,
> > mvfx11"
> > + :"=&r" (tmp)
> > + :"0" (&fp->acc0[0])
> > + :"memory");
> > +
> > + restore_fiq_irq();
> > +}
> > +#endif
> > +
> > +void save_crunch(struct task_struct *tsk)
> > +{
> > + int tmp;
> > + struct fp_crunch_struct *fp =
> &tsk->thread_info->fpstate.crunch;
> > +
> > + asm volatile (
> > + "stcl p5, c0, [%0],#8\n\t" // "cfstr64
> > mvdx0,
> > [%0], 8\n\t"
> > + "stcl p5, c1, [%0],#8\n\t" // "cfstr64
> > mvdx1,
> > [%0], 8\n\t"
> > + "stcl p5, c2, [%0],#8\n\t" // "cfstr64
> > mvdx2,
> > [%0], 8\n\t"
> > + "stcl p5, c3, [%0],#8\n\t" // "cfstr64
> > mvdx3,
> > [%0], 8\n\t"
> > + "stcl p5, c4, [%0],#8\n\t" // "cfstr64
> > mvdx4,
> > [%0], 8\n\t"
> > + "stcl p5, c5, [%0],#8\n\t" // "cfstr64
> > mvdx5,
> > [%0], 8\n\t"
> > + "stcl p5, c6, [%0],#8\n\t" // "cfstr64
> > mvdx6,
> > [%0], 8\n\t"
> > + "stcl p5, c7, [%0],#8\n\t" // "cfstr64
> > mvdx7,
> > [%0], 8\n\t"
> > + "stcl p5, c8, [%0],#8\n\t" // "cfstr64
> > mvdx8,
> > [%0], 8\n\t"
> > + "stcl p5, c9, [%0],#8\n\t" // "cfstr64
> > mvdx9,
> > [%0], 8\n\t"
> > + "stcl p5, c10, [%0],#8\n\t" // "cfstr64
> > mvdx10, [%0], 8\n\t"
> > + "stcl p5, c11, [%0],#8\n\t" // "cfstr64
> > mvdx11, [%0], 8\n\t"
> > + "stcl p5, c12, [%0],#8\n\t" // "cfstr64
> > mvdx12, [%0], 8\n\t"
> > + "stcl p5, c13, [%0],#8\n\t" // "cfstr64
> > mvdx13, [%0], 8\n\t"
> > + "stcl p5, c14, [%0],#8\n\t" // "cfstr64
> > mvdx14, [%0], 8\n\t"
> > + "stcl p5, c15, [%0, #0]\n\t" // "cfstr64
> > mvdx15, [%0, #0]\n\t"
> > + "cdp p4, 1, c15, c0, c0, 7\n\t" // "cfmv32sc
> > mvdx15, dspsc\n\t"
> > + "stc p5, c15, [%2, #0]" //
> > "cfstr32
> > mvfx15, [%2, #0]"
> > + :"=&r" (tmp)
> > + :"0" (&fp->regs[0]), "r" (&fp->dspsc)
> > + :"memory");
> > +#ifdef CONFIG_EP93XX_CRUNCH_ACC
> > + /*
> > + * this call should be made exactly here since it's corrupting
> > + * the contents of most crunch registers ;-)
> > + */
> > + save_accumulators(tsk);
> > +#endif
> > +}
> > +
> > +void restore_crunch(struct task_struct *tsk)
> > +{
> > + int tmp;
> > + struct fp_crunch_struct *fp =
> &tsk->thread_info->fpstate.crunch;
> > +#ifdef CONFIG_EP93XX_CRUNCH_ACC
> > + /*
> > + * same as above, but reversed. if you put the call below the
> > 'asm'
> > + * code then you'll corrupt the
> > + */
> > + restore_accumulators(tsk);
> > +#endif
> > + asm volatile (
> > + "ldc p5, c15, [%2, #0]\n\t" // "cfldr32
> mvfx15,
> > [%2, #0]\n\t"
> > + "cdp p4, 2, c15, c0, c0, 7\n\t" // "cfmvsc32
> > dspsc, mvdx15\n\t"
> > + "ldcl p5, c0, [%0],#8\n\t" // "cfldr64 mvdx0,
> > [%0], 8\n\t"
> > + "ldcl p5, c1, [%0],#8\n\t" // "cfldr64 mvdx1,
> > [%0], 8\n\t"
> > + "ldcl p5, c2, [%0],#8\n\t" // "cfldr64 mvdx2,
> > [%0], 8\n\t"
> > + "ldcl p5, c3, [%0],#8\n\t" // "cfldr64 mvdx3,
> > [%0], 8\n\t"
> > + "ldcl p5, c4, [%0],#8\n\t" // "cfldr64 mvdx4,
> > [%0], 8\n\t"
> > + "ldcl p5, c5, [%0],#8\n\t" // "cfldr64 mvdx5,
> > [%0], 8\n\t"
> > + "ldcl p5, c6, [%0],#8\n\t" // "cfldr64 mvdx6,
> > [%0], 8\n\t"
> > + "ldcl p5, c7, [%0],#8\n\t" // "cfldr64 mvdx7,
> > [%0], 8\n\t"
> > + "ldcl p5, c8, [%0],#8\n\t" // "cfldr64 mvdx8,
> > [%0], 8\n\t"
> > + "ldcl p5, c9, [%0],#8\n\t" // "cfldr64 mvdx9,
> > [%0], 8\n\t"
> > + "ldcl p5, c10, [%0],#8\n\t" // "cfldr64
> mvdx10,
> > [%0], 8\n\t"
> > + "ldcl p5, c11, [%0],#8\n\t" // "cfldr64
> mvdx11,
> > [%0], 8\n\t"
> > + "ldcl p5, c12, [%0],#8\n\t" // "cfldr64
> mvdx12,
> > [%0], 8\n\t"
> > + "ldcl p5, c13, [%0],#8\n\t" // "cfldr64
> mvdx13,
> > [%0], 8\n\t"
> > + "ldcl p5, c14, [%0],#8\n\t" // "cfldr64
> mvdx14,
> > [%0], 8\n\t"
> > + "ldcl p5, c15, [%0, #0]" //
> > "cfldr64
> > mvdx15, [%0, #0]"
> > + :"=&r" (tmp)
> > + :"0" (&fp->regs[0]), "r" (&fp->dspsc)
> > + :"memory");
> > +}
> > +
> > +void crunch_exception(int irq, void *dev_id, struct pt_regs *regs)
> > +{
> > + int sc, opc;
> > +
> > + send_sig(SIGFPE, current, 1);
> > + opc = read_dspsc_high();
> > + sc = read_dspsc_low();
> > + printk("%s: DSPSC_high=%08x, DSPSC_low=%08x\n", __FUNCTION__,
> > opc,
> > sc);
> > + sc &= ~(1 << 21); /* we recure without this */
> > + write_dspsc(sc);
> > +}
> > +
> > +/*
> > + * only register ep9312 default FPU handler...
> > + */
> > +__init int setup_crunch(void)
> > +{
> > + int res;
> > +
> > + res = request_irq(CRUNCH_IRQ, crunch_exception, SA_INTERRUPT,
> > "FPU", NULL);
> > + if (res) {
> > + printk("Crunch IRQ (%d) allocation failure\n",
> > CRUNCH_IRQ);
> > + return res;
> > + }
> > +
> > + return res;
> > +}
> > +
> > +static inline int insn_is_crunch(long insn)
> > +{
> > + long tmp;
> > +
> > + tmp = (insn >> 24) & 0x0e;
> > + /* cdp, mcr, mrc */
> > + if (tmp == 0x0e || tmp == 0x0c) {
> > + tmp = (insn >> 8) & 0x0f;
> > + if (tmp == 4)
> > + return 1;
> > + if (tmp == 5)
> > + return 1;
> > + if (tmp == 6)
> > + return 1;
> > + }
> > +
> > + return 0;
> > +}
> > +
> > +int crunch_opcode(struct pt_regs *regs)
> > +{
> > + long *insn;
> > + struct task_struct *tsk = current;
> > +
> > + insn = (long *) (instruction_pointer(regs) - 4);
> > +// printk("insn : %08lx \n", insn);
> > + if (!insn_is_crunch(*insn)) {
> > + /*
> > + * not a crunch instruction, but might be another
> > + * (FPA/VFP) floating point one
> > + */
> > +// printk("No Crunch %08lx \n", insn);
> > + return 0;
> > + }
> > +
> > +// printk("Crunch %08lx \n", insn);
> > + crunch_enable();
> > +// printk("crunch_enable\n");
> > + regs->ARM_pc -= 4; /* restart the Crunch
> instruction
> > */
> > + if (tsk->flags & PF_USEDCRUNCH) {
> > + restore_crunch(tsk);
> > + } else {
> > + crunch_init();
> > + }
> > + tsk->flags |= PF_USEDFPU;
> > + return 1;
> > +}
> > +
> > +void crunch_in(void)
> > +{
> > + printk("in !\n");
> > +}
> > +
> > +void crunch_out(void)
> > +{
> > + printk("out !\n");
> > +}
> > +
> > +void crunch_out2(void)
> > +{
> > + printk("out2 !\n");
> > +}
> > +
> > +__initcall(setup_crunch);
> > diff -urN linux-2.6.11.7/arch/arm/mach-ep93xx/dma_ep93xx.c
> > l
>
>
>
>
>
>
>
>
--
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