[U-Boot] powerpc: Simplify processor.h

Lots of stuff in processor.h was taken verbatim from the Linux kernel.
It was never synced, so most of it was removed or changed in the kernel
since it was imported.

Remove all the stuff that is unused in the current U-Boot sources;
should anybody feel the need to re-sync with the kernel, they can do it
later on.

Signed-off-by: Mario Six <mario.six@gdsys.cc>
---
 arch/powerpc/include/asm/processor.h | 120 ---------------------------
 1 file changed, 120 deletions(-)

On Mon, Jan 28, 2019 at 9:34 AM Mario Six <mario.six@gdsys.cc> wrote:
>
> Lots of stuff in processor.h was taken verbatim from the Linux kernel.
> It was never synced, so most of it was removed or changed in the kernel
> since it was imported.
>
> Remove all the stuff that is unused in the current U-Boot sources;
> should anybody feel the need to re-sync with the kernel, they can do it
> later on.
>
> Signed-off-by: Mario Six <mario.six@gdsys.cc>
> ---
>  arch/powerpc/include/asm/processor.h | 120 ---------------------------
>  1 file changed, 120 deletions(-)
>
> diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h
> index f97ce48cc27..e03ab21f59d 100644
> --- a/arch/powerpc/include/asm/processor.h
> +++ b/arch/powerpc/include/asm/processor.h
> @@ -1203,127 +1203,7 @@ int fsl_qoriq_dsp_core_to_cluster(unsigned int core);
>  #endif
>  #endif
>
> -
> -/* what kind of prep workstation we are */
> -extern int _prep_type;
> -/*
> - * This is used to identify the board type from a given PReP board
> - * vendor. Board revision is also made available.
> - */
> -extern unsigned char ucSystemType;
> -extern unsigned char ucBoardRev;
> -extern unsigned char ucBoardRevMaj, ucBoardRevMin;
> -
>  struct task_struct;
> -void start_thread(struct pt_regs *regs, unsigned long nip, unsigned long sp);
> -void release_thread(struct task_struct *);
> -
> -/*
> - * Create a new kernel thread.
> - */
> -extern long kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
> -
> -/*
> - * Bus types
> - */
> -#define EISA_bus 0
> -#define EISA_bus__is_a_macro /* for versions in ksyms.c */
> -#define MCA_bus 0
> -#define MCA_bus__is_a_macro /* for versions in ksyms.c */
> -
> -/* Lazy FPU handling on uni-processor */
> -extern struct task_struct *last_task_used_math;
> -extern struct task_struct *last_task_used_altivec;
> -
> -/*
> - * this is the minimum allowable io space due to the location
> - * of the io areas on prep (first one at 0x80000000) but
> - * as soon as I get around to remapping the io areas with the BATs
> - * to match the mac we can raise this. -- Cort
> - */
> -#define TASK_SIZE      (0x80000000UL)
> -
> -/* This decides where the kernel will search for a free chunk of vm
> - * space during mmap's.
> - */
> -#define TASK_UNMAPPED_BASE     (TASK_SIZE / 8 * 3)
> -
> -typedef struct {
> -       unsigned long seg;
> -} mm_segment_t;
> -
> -struct thread_struct {
> -       unsigned long   ksp;            /* Kernel stack pointer */
> -       unsigned long   wchan;          /* Event task is sleeping on */
> -       struct pt_regs  *regs;          /* Pointer to saved register state */
> -       mm_segment_t    fs;             /* for get_fs() validation */
> -       void            *pgdir;         /* root of page-table tree */
> -       signed long     last_syscall;
> -       double          fpr[32];        /* Complete floating point set */
> -       unsigned long   fpscr_pad;      /* fpr ... fpscr must be contiguous */
> -       unsigned long   fpscr;          /* Floating point status */
> -#ifdef CONFIG_ALTIVEC
> -       vector128       vr[32];         /* Complete AltiVec set */
> -       vector128       vscr;           /* AltiVec status */
> -       unsigned long   vrsave;
> -#endif /* CONFIG_ALTIVEC */
> -};
> -
> -#define INIT_SP                (sizeof(init_stack) + (unsigned long) &init_stack)
> -
> -#define INIT_THREAD  { \
> -       INIT_SP, /* ksp */ \
> -       0, /* wchan */ \
> -       (struct pt_regs *)INIT_SP - 1, /* regs */ \
> -       KERNEL_DS, /*fs*/ \
> -       swapper_pg_dir, /* pgdir */ \
> -       0, /* last_syscall */ \
> -       {0}, 0, 0 \
> -}
> -
> -/*
> - * Note: the vm_start and vm_end fields here should *not*
> - * be in kernel space. (Could vm_end == vm_start perhaps?)
> - */
> -#define INIT_MMAP { &init_mm, 0, 0x1000, NULL, \
> -                   PAGE_SHARED, VM_READ | VM_WRITE | VM_EXEC, \
> -                   1, NULL, NULL }
> -
> -/*
> - * Return saved PC of a blocked thread. For now, this is the "user" PC
> - */
> -static inline unsigned long thread_saved_pc(struct thread_struct *t)
> -{
> -       return (t->regs) ? t->regs->nip : 0;
> -}
> -
> -#define copy_segments(tsk, mm)         do { } while (0)
> -#define release_segments(mm)           do { } while (0)
> -#define forget_segments()              do { } while (0)
> -
> -unsigned long get_wchan(struct task_struct *p);
> -
> -#define KSTK_EIP(tsk)  ((tsk)->thread.regs->nip)
> -#define KSTK_ESP(tsk)  ((tsk)->thread.regs->gpr[1])
> -
> -/*
> - * NOTE! The task struct and the stack go together
> - */
> -#define THREAD_SIZE (2*PAGE_SIZE)
> -#define alloc_task_struct() \
> -       ((struct task_struct *) __get_free_pages(GFP_KERNEL,1))
> -#define free_task_struct(p)    free_pages((unsigned long)(p),1)
> -#define get_task_struct(tsk)     atomic_inc(&mem_map[MAP_NR(tsk)].count)
> -
> -/* in process.c - for early bootup debug -- Cort */
> -int ll_printk(const char *, ...);
> -void ll_puts(const char *);
> -
> -#define init_task      (init_task_union.task)
> -#define init_stack     (init_task_union.stack)
> -
> -/* In misc.c */
> -void _nmask_and_or_msr(unsigned long nmask, unsigned long or_val);
>
>  #ifndef CONFIG_CPU_MPC83XX
>  int prt_83xx_rsr(void);
> --
> 2.20.1
>
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Applied to u-boot-mpc83xx/next.