[linux-cirrus] Re: Building Nucleusys tool chain on the target
- From: Yann Poupet <yann.poupet@xxxxxxx>
- To: linux-cirrus@xxxxxxxxxxxxx
- Date: Wed, 25 May 2005 14:09:59 +0200
Hi Bhushan,
I guess you use an EP9315 processor, not a 9215 ?
Actually I don't know where your problem could come from. When does it happen ?
Has the kernel allready arrived on your board through tftboot ?
What I can see is that you try to boot vmlinux. I'm not a uboot expert and maybe
the guys on the uboot mailing list could help you better, but I think it is best
and easier to boot a 'uImage' when you use uboot (that is what I use to do).
To create a uImage, just type 'make uImage' instead of 'make vmlinux' in your
kernel directory. If it yells about a not found 'mkimage' script, you can
certainly get it somewhere on the web (at least I think this mkimage script is
provided by the Denx ELDK toolchain)
Regards
Yann
> Hi Yann,
> I am able to build succesfully,
> Thanks a lot,
> Need some more help.
> I am trying to boot EP9215 with the linux (new image) using U-boot loader
> through tftpboot.
> I am getting error
> TFTP from server 139.187.156.18; our IP address is 139.187.156.42
> Filename '/home/white/arm/arm-linux/linux-2.6.11.7/vmlinux'.
> Load address: 0x60100000
> Loading: len bad 76 < 78
>
> Can you suggest what is this error
> I am not able to boot
> Thanks and regards
> Bhushan Kolarkar
>
>
> |---------+--------------------------------->
> | | "Bhushan Kolarkar" |
> | | <Bhushan.Kolarkar@nsc.|
> | | com> |
> | | Sent by: |
> | | linux-cirrus-bounce@fr|
> | | eelists.org |
> | | |
> | | |
> | | 05/21/2005 01:14 PM |
> | | Please respond to |
> | | linux-cirrus |
> | | |
> |---------+--------------------------------->
>
>
>------------------------------------------------------------------------------------------------------------------------------|
> |
> |
> | To: linux-cirrus@xxxxxxxxxxxxx
> |
> | cc:
> |
> | Subject: [linux-cirrus] Re: Building Nucleusys tool chain on the
> target |
>
>
>------------------------------------------------------------------------------------------------------------------------------|
>
>
>
>
> Hi Yann,
> That was of great help,
> I have applied the path
> I am trying to resolve the error,
> Thanks and regards
> Bhushan
>
>
> |---------+--------------------------------->
> | | "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
> linux-2.6.11.7-eb/arch/arm/mach-ep93xx/dma_ep93xx.c
> --- linux-2.6.11.7/arch/arm/mach-ep93xx/dma_ep93xx.c 2005-05-15
> 22:34:17.000000000 +0200
> +++ linux-2.6.11.7-eb/arch/arm/mach-ep93xx/dma_ep93xx.c 2005-05-12
> 20:46:41.000000000 +0200
> @@ -50,7 +50,7 @@
> #undef DEBUG
> /*#define DEBUG 1 */
> #ifdef DEBUG
> -#define DPRINTK( x... ) printk( ##x )
> +#define DPRINTK( x... ) printk( x )
> #else
> #define DPRINTK( x... )
> #endif
> @@ -92,6 +92,7 @@
> {
> int channel;
>
> + DPRINTK("%s \n", __FUNCTION__);
> /*
> * Get the DMA channel # from the handle.
> */
> @@ -138,6 +139,7 @@
> ep93xx_dma_dev_t dma_int = UNDEF_INT;
> unsigned int read_back, loop, uiCONTROL, uiINTERRUPT;
>
> + DPRINTK("%s \n", __FUNCTION__);
> loop = inl(M2M_reg_base+M2M_OFFSET_INTERRUPT);
>
> /*
> @@ -150,7 +152,7 @@
> else if( inl(M2M_reg_base+M2M_OFFSET_INTERRUPT) & INTERRUPT_M2M_DONEINT
> )
> dma_int = DONE;
>
> - DPRINTK("IRQ: b=%#x st=%#x\n", (int)dma->current_buffer->source,
> dma_int);
> + DPRINTK("IRQ: b=%#x st=%#x\n", (int)dma->current_buffer/*->source*/,
> dma_int);
>
> /*
> * Stall Interrupt: The Channel is stalled, meaning nothing is
> @@ -321,15 +323,14 @@
>
> DPRINTK("End of stall handling. \n");
> DPRINTK("STATUS - 0x%x \n",
> inl(M2M_reg_base+M2M_OFFSET_STATUS) );
> - DPRINTK("CONTROL - 0x%x \n",
> inl(M2M_reg_base+M2M_CONTROL.Value) );
> - DPRINTK("REMAIN - 0x%x \n",
> inl(M2M_reg_base+M2M_REMAIN.Value) );
> - DPRINTK("PPALLOC - 0x%x \n",
> inl(M2M_reg_base+M2M_PPALLOC.Value) );
> - DPRINTK("BASE0 - 0x%x \n",
> inl(M2M_reg_base+M2M_BASE0.Value) );
> - DPRINTK("MAXCNT0 - 0x%x \n",
> inl(M2M_reg_base+M2M_MAXCNT0.Value) );
> - DPRINTK("CURRENT0 - 0x%x \n",
> inl(M2M_reg_base+M2M_CURRENT0.Value) );
> - DPRINTK("BASE1 - 0x%x \n",
> inl(M2M_reg_base+M2M_BASE1.Value) );
> - DPRINTK("MAXCNT1 - 0x%x \n",
> inl(M2M_reg_base+M2M_MAXCNT1.Value) );
> - DPRINTK("CURRENT1 - 0x%x \n",
> inl(M2M_reg_base+M2M_CURRENT1.Value) );
> +// DPRINTK("CONTROL - 0x%x \n",
> inl(M2M_reg_base+M2M_CONTROL.Value) );
> +// DPRINTK("REMAIN - 0x%x \n",
> inl(M2M_reg_base+M2M_REMAIN.Value) );
> +// DPRINTK("PPALLOC - 0x%x \n",
> inl(M2M_reg_base+M2M_PPALLOC.Value) );
> +// DPRINTK("BASE0 - 0x%x \n",
> inl(M2M_reg_base+M2M_BASE0.Value)
> );
> +// DPRINTK("MAXCNT0 - 0x%x \n",
> inl(M2M_reg_base+M2M_MAXCNT0.Value) );
> +// DPRINTK("CURRENT0 - 0x%x \n",
> inl(M2M_reg_base+M2M_CURRENT0.Value) );
> +// DPRINTK("BASE1 - 0x%x \n",
> inl(M2M_reg_base+M2M_BASE1.Value)
> );
> +// DPRINTK("MAXCNT1 - 0x%x \n",
> inl(M2M_reg_base+M2M_MAXCNT1.Value) );
>
> DPRINTK("Buffer buf_id source size last
> used \n");
> for(loop = 0; loop < 32; loop ++)
> @@ -437,7 +438,7 @@
> DPRINTK("End of NFB handling. \n");
> DPRINTK("STATUS - 0x%x \n",
> inl(M2M_reg_base+M2M_OFFSET_STATUS) );
> DPRINTK("CONTROL - 0x%x \n",
> inl(M2M_reg_base+M2M_OFFSET_CONTROL) );
> - DPRINTK("REMAIN - 0x%x \n",
> inl(M2M_reg_base+M2M_OFFSET_REMAIN) );
> +/* DPRINTK("REMAIN - 0x%x \n",
> inl(M2M_reg_base+M2M_OFFSET_REMAIN) );
> DPRINTK("PPALLOC - 0x%x \n",
> inl(M2M_reg_base+M2M_OFFSET_PPALLOC) );
> DPRINTK("BASE0 - 0x%x \n",
> inl(M2M_reg_base+M2M_OFFSET_BASE0) );
> DPRINTK("MAXCNT0 - 0x%x \n",
> inl(M2M_reg_base+M2M_OFFSET_MAXCNT0) );
> @@ -445,7 +446,7 @@
> DPRINTK("BASE1 - 0x%x \n",
> inl(M2M_reg_base+M2M_OFFSET_BASE1) );
> DPRINTK("MAXCNT1 - 0x%x \n",
> inl(M2M_reg_base+M2M_OFFSET_MAXCNT1) );
> DPRINTK("CURRENT1 - 0x%x \n",
> inl(M2M_reg_base+M2M_OFFSET_CURRENT1) );
> -
> +*/
> DPRINTK("Buffer buf_id source size last
> used \n");
> for(loop = 0; loop < 32; loop ++)
> {
> @@ -587,7 +588,7 @@
>
> DPRINTK("STATUS - 0x%x \n", inl(M2M_reg_base+M2M_OFFSET_STATUS)
> );
> DPRINTK("CONTROL - 0x%x \n", inl(M2M_reg_base+M2M_OFFSET_CONTROL)
> );
> - DPRINTK("SAR_BASE0 - 0x%x \n",
> inl(M2M_reg_base+M2M_OFFSET_SAR_BASE0) );
> + /* DPRINTK("SAR_BASE0 - 0x%x \n",
> inl(M2M_reg_base+M2M_OFFSET_SAR_BASE0) );
> DPRINTK("DAR_BASE0 - 0x%x \n",
> inl(M2M_reg_base+M2M_OFFSET_DAR_BASE0) );
> DPRINTK("SAR_CURRENT0 - 0x%x \n",
> inl(M2M_reg_base+M2M_OFFSET_SAR_CURRENT0) );
> DPRINTK("DAR_CURRENT0 - 0x%x \n",
> inl(M2M_reg_base+M2M_OFFSET_DAR_CURRENT0) );
> @@ -595,6 +596,7 @@
> DPRINTK("SAR_BASE1 - 0x%x \n",
> inl(M2M_reg_base+M2M_OFFSET_SAR_BASE1) );
> DPRINTK("DAR_BASE1 - 0x%x \n",
> inl(M2M_reg_base+M2M_OFFSET_DAR_BASE1)
> );
> DPRINTK("BCR1 - 0x%x \n", inl(M2M_reg_base+M2M_OFFSET_BCR1) );
> + */
>
>
> /*
> @@ -639,6 +641,7 @@
> ep93xx_dma_dev_t dma_int = UNDEF_INT;
> unsigned int loop, uiCONTROL, uiINTERRUPT;
>
> + DPRINTK("%s \n", __FUNCTION__);
> /*
> * Determine what kind of dma interrupt this is.
> */
> @@ -801,7 +804,7 @@
>
> DPRINTK("STATUS - 0x%x \n",
> inl(M2P_reg_base+M2P_OFFSET_STATUS) );
> DPRINTK("CONTROL - 0x%x \n",
> inl(M2P_reg_base+M2P_OFFSET_CONTROL) );
> - DPRINTK("REMAIN - 0x%x \n",
> inl(M2P_reg_base+M2P_OFFSET_REMAIN) );
> + /*DPRINTK("REMAIN - 0x%x \n",
> inl(M2P_reg_base+M2P_OFFSET_REMAIN) );
> DPRINTK("PPALLOC - 0x%x \n",
> inl(M2P_reg_base+M2P_OFFSET_PPALLOC) );
> DPRINTK("BASE0 - 0x%x \n",
> inl(M2P_reg_base+M2P_OFFSET_BASE0) );
> DPRINTK("MAXCNT0 - 0x%x \n",
> inl(M2P_reg_base+M2P_OFFSET_MAXCNT0) );
> @@ -809,6 +812,7 @@
> DPRINTK("BASE1 - 0x%x \n",
> inl(M2P_reg_base+M2P_OFFSET_BASE1) );
> DPRINTK("MAXCNT1 - 0x%x \n",
> inl(M2P_reg_base+M2P_OFFSET_MAXCNT1) );
> DPRINTK("CURRENT1 - 0x%x \n",
> inl(M2P_reg_base+M2P_OFFSET_CURRENT1) );
> + */
>
> DPRINTK("Buffer buf_id source size last
> used \n");
> for(loop = 0; loop < 32; loop ++)
> @@ -1070,8 +1074,9 @@
> int channel = -1;
> unsigned int loop;
> unsigned int M2P_reg_base;
> - unsigned int uiPWRCNT;
> + unsigned int uiPWRCNT;
>
> + DPRINTK("%s \n", __FUNCTION__);
> DPRINTK("DMA Open M2P with hw dev %d\n", device);
>
>
> @@ -1282,6 +1287,7 @@
> unsigned int M2M_reg_base;
> unsigned int uiPWRCNT, uiCONTROL;
>
> + DPRINTK("%s \n", __FUNCTION__);
> DPRINTK("DMA Open M2M with hw dev %d\n", device);
>
> /*
> @@ -1528,6 +1534,7 @@
> unsigned long flags;
> unsigned int M2M_reg_base, uiCONTROL;
>
> + DPRINTK("%s \n", __FUNCTION__);
> /*
> * Make sure the channel is disabled before configuring the channel.
> *
> @@ -1650,6 +1657,7 @@
> unsigned int M2M_reg_base = dma->reg_base;
> unsigned int uiCONTROL;
>
> + DPRINTK("%s \n", __FUNCTION__);
> /*
> * Mask interrupts while we get this started.
> */
> @@ -1767,7 +1775,7 @@
>
> DPRINTK("DMA - It's been started!!");
> DPRINTK("STATUS - 0x%x \n", inl(M2M_reg_base+M2M_OFFSET_STATUS) );
> - DPRINTK("CONTROL - 0x%x \n", inl(M2M_reg_base+M2M_CONTROL.Value) );
> + /*DPRINTK("CONTROL - 0x%x \n", inl(M2M_reg_base+M2M_CONTROL.Value) );
> DPRINTK("REMAIN - 0x%x \n", inl(M2M_reg_base+M2M_REMAIN.Value) );
> DPRINTK("PPALLOC - 0x%x \n", inl(M2M_reg_base+M2M_PPALLOC.Value) );
> DPRINTK("BASE0 - 0x%x \n", inl(M2M_reg_base+M2M_BASE0.Value) );
> @@ -1785,6 +1793,7 @@
> DPRINTK("current buffer - %d \n", dma_pointers[0]->current_buffer);
> DPRINTK("last buffer - %d \n", dma_pointers[0]->last_buffer);
> DPRINTK("used buffers - %d \n", dma_pointers[0]->used_buffers);
> + */
>
> /*
> * Unmask irqs
> @@ -1834,6 +1843,7 @@
> unsigned long flags;
> unsigned int M2P_reg_base, uiCONTROL;
>
> + DPRINTK("%s \n", __FUNCTION__);
> /*
> * Get the DMA hw channel # from the handle.
> */
> @@ -1969,6 +1979,7 @@
> unsigned long flags;
> int channel;
>
> + DPRINTK("%s \n", __FUNCTION__);
> /*
> * Get the DMA hw channel # from the handle.
> */
> @@ -2237,6 +2248,7 @@
> ep93xx_dma_t * dma;
> int channel;
>
> + DPRINTK("%s \n", __FUNCTION__);
> /*
> * Get the DMA hw channel # from the handle.
> */
> @@ -2363,6 +2375,7 @@
> ep93xx_dma_t *dma;
> int channel;
>
> + DPRINTK("%s \n", __FUNCTION__);
> /*
> * Get the DMA hw channel # from the handle.
> */
> @@ -2471,6 +2484,7 @@
> int channel;
> unsigned int M2M_reg_base, M2P_reg_base;
>
> + DPRINTK("%s \n", __FUNCTION__);
> DPRINTK("ep93xx_dma_pause \n");
>
> /*
> @@ -2579,6 +2593,7 @@
> int channel;
> unsigned int M2P_reg_base;
>
> + DPRINTK("%s \n", __FUNCTION__);
> /*
> * Get the DMA hw channel # from the handle.
> */
> @@ -2665,6 +2680,7 @@
> unsigned long flags;
> int channel;
>
> + DPRINTK("%s \n", __FUNCTION__);
> /*
> * Get the DMA hw channel # from the handle.
> */
> @@ -2735,6 +2751,7 @@
> int channel;
> ep93xx_dma_t * dma;
>
> + DPRINTK("%s \n", __FUNCTION__);
> /*
> * Get the DMA hw channel # from the handle.
> */
> @@ -2786,6 +2803,7 @@
> {
> int channel;
>
> + DPRINTK("%s \n", __FUNCTION__);
> /*
> * Get the DMA hw channel # from the handle.
> */
> @@ -2837,6 +2855,7 @@
> unsigned int loop;
> unsigned int M2P_reg_base;
>
> + DPRINTK("%s \n", __FUNCTION__);
> /*
> * Check if the device requesting a DMA channel is a valid device.
> */
> @@ -2998,7 +3017,7 @@
> DPRINTK("CURRENT0 - 0x%x \n", inl(M2P_reg_base+M2P_OFFSET_CURRENT0) );
> DPRINTK("BASE1 - 0x%x \n", inl(M2P_reg_base+M2P_OFFSET_BASE1) );
> DPRINTK("MAXCNT1 - 0x%x \n", inl(M2P_reg_base+M2P_OFFSET_MAXCNT1) );
> - DPRINTK("CURRENT1 - 0x%x \n", inl(M2P_reg_base+M2P_OFFSET_CURRENT1) );
> + //DPRINTK("CURRENT1 - 0x%x \n", inl(M2P_reg_base+M2P_OFFSET_CURRENT1)
> );
>
> DPRINTK("Buffer source size last used \n");
> for(loop = 0; loop < 5; loop ++)
> @@ -3020,7 +3039,7 @@
> DPRINTK("last buffer - %d \n", dma->last_buffer);
> DPRINTK("used buffers - %d \n", dma->used_buffers);
>
> - DPRINTK("CURRENT1 - 0x%x \n", inl(M2P_reg_base+M2P_OFFSET_CURRENT1) );
> + //DPRINTK("CURRENT1 - 0x%x \n", inl(M2P_reg_base+M2P_OFFSET_CURRENT1)
> );
> DPRINTK("VIC0IRQSTATUS - 0x%x, VIC0INTENABLE - 0x%x \n",
> *(unsigned int *)(VIC0IRQSTATUS),
> *(unsigned int *)(VIC0INTENABLE));
> @@ -3047,6 +3066,7 @@
> unsigned int M2M_reg_base, M2P_reg_base, uiCONTROL;
> int channel;
>
> + DPRINTK("%s \n", __FUNCTION__);
> /*
> * Get the DMA hw channel # from the handle.
> */
> @@ -3138,6 +3158,7 @@
> {
> int channel;
>
> + DPRINTK("%s \n", __FUNCTION__);
> /*
> * Init some values in each dma instance.
> */
> diff -urN linux-2.6.11.7/arch/arm/mach-ep93xx/Kconfig
> linux-2.6.11.7-eb/arch/arm/mach-ep93xx/Kconfig
> --- linux-2.6.11.7/arch/arm/mach-ep93xx/Kconfig 2005-05-15
> 22:34:17.000000000 +0200
> +++ linux-2.6.11.7-eb/arch/arm/mach-ep93xx/Kconfig 2005-05-12
> 20:47:25.000000000 +0200
> @@ -138,6 +138,13 @@
> Say Y here if you want to enable DMA Support for EP93XX family
> CPUs.
>
> +config EP93XX_CRUNCH
> + bool "EP93xx MaverickCrunch Support"
> + depends on ARCH_EP9302 || ARCH_EP9312 || ARCH_EP9315
> + default n
> + help
> + Say Y here if you want to enable MaverickCrunch support for
> EP93XX family CPUs.
> +
> config ARCH_EP93XX_IDE
> bool "EP93XX IDE Support"
> depends on ARCH_EP9312 || ARCH_EP9315
> diff -urN linux-2.6.11.7/arch/arm/mach-ep93xx/Makefile
> linux-2.6.11.7-eb/arch/arm/mach-ep93xx/Makefile
> --- linux-2.6.11.7/arch/arm/mach-ep93xx/Makefile 2005-05-15
> 22:34:17.000000000 +0200
> +++ linux-2.6.11.7-eb/arch/arm/mach-ep93xx/Makefile 2005-05-12
> 20:47:59.000000000 +0200
> @@ -19,6 +19,7 @@
> obj-$(CONFIG_MACH_ZEFEERDZQ) += mach-zefeerdzq.o
>
> obj-$(CONFIG_EP93XX_DMA) += dma_ep93xx.o
> +obj-$(CONFIG_EP93XX_CRUNCH) += crunch.o
>
> obj-$(CONFIG_EP93XX_SSP_LINUX) += ssp.o ssp2.o
> obj-$(CONFIG_EP93XX_SSP_CIRRUS) += ssp-cirrus.o
> diff -urN linux-2.6.11.7/arch/arm/Makefile
> linux-2.6.11.7-eb/arch/arm/Makefile
> --- linux-2.6.11.7/arch/arm/Makefile 2005-05-15
> 22:34:17.000000000
> +0200
> +++ linux-2.6.11.7-eb/arch/arm/Makefile 2005-05-12
> 20:49:35.000000000
> +0200
> @@ -59,8 +59,8 @@
>
> # Need -Uarm for gcc < 3.x
> CFLAGS_ABI :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu)
> -CFLAGS +=$(CFLAGS_ABI) $(arch-y) $(tune-y) $(call
> cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
> -msoft-float
> -Uarm
> -AFLAGS +=$(CFLAGS_ABI) $(arch-y) $(tune-y)
> -msoft-float
> +CFLAGS +=$(CFLAGS_ABI) $(arch-y) $(tune-y) $(call
> cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
> -msoft-float
> -Wa,-mcpu=ep9312 -Uarm
> +AFLAGS +=$(CFLAGS_ABI) $(arch-y) $(tune-y)
> -msoft-float
> -Wa,-mcpu=ep9312
>
> CHECKFLAGS += -D__arm__
>
> diff -urN linux-2.6.11.7/drivers/video/ep93xxfb.c
> linux-2.6.11.7-eb/drivers/video/ep93xxfb.c
> --- linux-2.6.11.7/drivers/video/ep93xxfb.c 2005-05-15
> 22:34:18.000000000 +0200
> +++ linux-2.6.11.7-eb/drivers/video/ep93xxfb.c 2005-05-12
> 21:18:01.000000000 +0200
> @@ -622,7 +622,9 @@
> * For kernel boot options (in 'video=xxxfb:<options>' format)
> */
>
> - fb_get_options("ep93xxfb", &option);
> + if (fb_get_options("ep93xxfb", &option))
> + return -ENODEV;
> +
> ep93xxfb_setup(option);
>
> /* init all the important stuff in info */
> diff -urN linux-2.6.11.7/include/asm-arm/arch-ep93xx/crunch.h
> linux-2.6.11.7-eb/include/asm-arm/arch-ep93xx/crunch.h
> --- linux-2.6.11.7/include/asm-arm/arch-ep93xx/crunch.h 2005-05-15
> 22:34:18.000000000 +0200
> +++ linux-2.6.11.7-eb/include/asm-arm/arch-ep93xx/crunch.h 2005-05-12
> 21:18:27.000000000 +0200
> @@ -1,6 +1,8 @@
> #ifndef __asm_crunch_h__
> #define __asm_crunch_h__
>
> +#include "asm/arch/regmap.h"
> +
> #define CRUNCH_INIT 0x00900000
> #define CRUNCH_IRQ 58
>
> diff -urN linux-2.6.11.7/include/asm-arm/fpstate.h
> linux-2.6.11.7-eb/include/asm-arm/fpstate.h
> --- linux-2.6.11.7/include/asm-arm/fpstate.h 2005-04-07
> 20:58:31.000000000 +0200
> +++ linux-2.6.11.7-eb/include/asm-arm/fpstate.h 2005-05-15
> 22:31:08.000000000 +0200
> @@ -59,12 +59,28 @@
> unsigned int save[0x98/sizeof(int) + 1];
> };
>
> +#ifdef CONFIG_EP93XX_CRUNCH
> +struct fp_crunch_struct {
> + long long regs[16];
> +#ifdef CONFIG_EP93XX_CRUNCH_ACC
> + int acc0[3];
> + int acc1[3];
> + int acc2[3];
> + int acc3[3];
> +#endif
> + unsigned long dspsc;
> +};
> +#endif
> +
> union fp_state {
> struct fp_hard_struct hard;
> struct fp_soft_struct soft;
> #ifdef CONFIG_IWMMXT
> struct iwmmxt_struct iwmmxt;
> #endif
> +#ifdef CONFIG_EP93XX_CRUNCH
> + struct fp_crunch_struct crunch;
> +#endif
> };
>
> #define FP_SIZE (sizeof(union fp_state) / sizeof(int))
> diff -urN linux-2.6.11.7/include/asm-arm/system.h
> linux-2.6.11.7-eb/include/asm-arm/system.h
> --- linux-2.6.11.7/include/asm-arm/system.h 2005-05-15
> 22:34:18.000000000 +0200
> +++ linux-2.6.11.7-eb/include/asm-arm/system.h 2005-05-12
> 21:23:12.000000000 +0200
> @@ -159,6 +159,19 @@
> #define task_running(rq,p)
> \
> ((rq)->curr == (p) || spin_is_locked(&(p)->switch_lock))
>
> +#ifdef CONFIG_EP93XX_CRUNCH
> +#include <asm/arch/crunch.h>
> +#define crunch_switch(prev, next) \
> + do {
> \
> + if (prev->flags & PF_USEDFPU) {
> \
> + save_crunch(prev);
> \
> + crunch_disable();
> \
> + }
> \
> + prev->flags &= ~PF_USEDFPU; \
> + } while (0)
> +#else
> +#define crunch_switch(prev, next) do { } while (0);
> +#endif
> /*
> * switch_to(prev, next) should switch from task `prev' to `next'
> * `prev' will never be the same as `next'. schedule() itself
> @@ -168,6 +181,7 @@
>
> #define switch_to(prev,next,last)
> \
> do {
> \
> + crunch_switch(prev, next);
> \
> last = __switch_to(prev,prev->thread_info,next->thread_info);
> \
> } while (0)
>
> diff -urN linux-2.6.11.7/include/linux/sched.h
> linux-2.6.11.7-eb/include/linux/sched.h
> --- linux-2.6.11.7/include/linux/sched.h 2005-05-15
> 22:34:18.000000000
> +0200
> +++ linux-2.6.11.7-eb/include/linux/sched.h 2005-05-12
> 21:23:43.000000000 +0200
> @@ -712,6 +712,7 @@
> do { if (atomic_dec_and_test(&(tsk)->usage)) __put_task_struct(tsk); }
> while(0)
>
> #ifdef CONFIG_EP93XX_CRUNCH
> +#define PF_USEDFPU 0x00100000 /* task used FPU this
> quantum
> (SMP) */
> #define PF_USEDCRUNCH 0x00200000 /* introduced to
> preserve PF_USEDFPU
> meaning
> across
> the architecture */
> #endif
>
>
>
>
>
>
>
>
>
>
>
>
--
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