#include <asm/page.h>
#include <asm/coldfire.h>
#include <asm/mcfuart.h>
-#include <asm/mcfcache.h>
+#include <asm/cache.h>
#include <asm/thread_info.h>
#define DEBUG
--- /dev/null
+/*
+ * Coldfire muldi3 assembly verion
+ */
+
+#include <linux/linkage.h>
+.globl __muldi3
+
+ENTRY(__muldi3)
+ linkw %fp,#0
+ lea %sp@(-32),%sp
+ moveml %d2-%d7/%a2-%a3,%sp@
+ moveal %fp@(8), %a2
+ moveal %fp@(12), %a3
+ moveal %fp@(16), %a0
+ moveal %fp@(20),%a1
+ movel %a3,%d2
+ andil #65535,%d2
+ movel %a3,%d3
+ clrw %d3
+ swap %d3
+ movel %a1,%d0
+ andil #65535,%d0
+ movel %a1,%d1
+ clrw %d1
+ swap %d1
+ movel %d2,%d7
+ mulsl %d0,%d7
+ movel %d2,%d4
+ mulsl %d1,%d4
+ movel %d3,%d2
+ mulsl %d0,%d2
+ mulsl %d1,%d3
+ movel %d7,%d0
+ clrw %d0
+ swap %d0
+ addl %d0,%d4
+ addl %d2,%d4
+ cmpl %d4,%d2
+ blss 1f
+ addil #65536,%d3
+1:
+ movel %d4,%d0
+ clrw %d0
+ swap %d0
+ movel %d3,%d5
+ addl %d0,%d5
+ movew %d4,%d6
+ swap %d6
+ movew %d7,%d6
+ movel %d5,%d0
+ movel %d6,%d1
+ movel %a3,%d2
+ movel %a0,%d3
+ mulsl %d3,%d2
+ movel %a2,%d3
+ movel %a1,%d4
+ mulsl %d4,%d3
+ addl %d3,%d2
+ movel %d2,%d0
+ addl %d5,%d0
+ moveml %sp@, %d2-%d7/%a2-%a3
+ lea %sp@(32),%sp
+ unlk %fp
+ rts
--- /dev/null
+/*
+ * linux/arch/m68k/kernel/signal.c
+ *
+ * Copyright (C) 1991, 1992 Linus Torvalds
+ *
+ * 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.
+ */
+
+/*
+ * Derived from m68k/kernel/signal.c and the original authors are credited
+ * there.
+ *
+ * Coldfire support by:
+ * Matt Waddel Matt.Waddel@freescale.com
+ * Copyright Freescale Semiconductor, Inc 2007
+ */
+
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/kernel.h>
+#include <linux/signal.h>
+#include <linux/syscalls.h>
+#include <linux/errno.h>
+#include <linux/wait.h>
+#include <linux/ptrace.h>
+#include <linux/unistd.h>
+#include <linux/stddef.h>
+#include <linux/highuid.h>
+#include <linux/personality.h>
+#include <linux/tty.h>
+#include <linux/binfmts.h>
+
+#include <asm/setup.h>
+#include <asm/cf_uaccess.h>
+#include <asm/cf_pgtable.h>
+#include <asm/traps.h>
+#include <asm/ucontext.h>
+#include <asm/cacheflush.h>
+
+#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
+
+asmlinkage int do_signal(sigset_t *oldset, struct pt_regs *regs);
+
+const int frame_extra_sizes[16] = {
+ [1] = -1,
+ [2] = sizeof(((struct frame *)0)->un.fmt2),
+ [3] = sizeof(((struct frame *)0)->un.fmt3),
+ [4] = 0,
+ [5] = -1,
+ [6] = -1,
+ [7] = sizeof(((struct frame *)0)->un.fmt7),
+ [8] = -1,
+ [9] = sizeof(((struct frame *)0)->un.fmt9),
+ [10] = sizeof(((struct frame *)0)->un.fmta),
+ [11] = sizeof(((struct frame *)0)->un.fmtb),
+ [12] = -1,
+ [13] = -1,
+ [14] = -1,
+ [15] = -1,
+};
+
+/*
+ * Atomically swap in the new signal mask, and wait for a signal.
+ */
+asmlinkage int do_sigsuspend(struct pt_regs *regs)
+{
+ old_sigset_t mask = regs->d3;
+ sigset_t saveset;
+
+ mask &= _BLOCKABLE;
+ spin_lock_irq(¤t->sighand->siglock);
+ saveset = current->blocked;
+ siginitset(¤t->blocked, mask);
+ recalc_sigpending();
+ spin_unlock_irq(¤t->sighand->siglock);
+
+ regs->d0 = -EINTR;
+ while (1) {
+ current->state = TASK_INTERRUPTIBLE;
+ schedule();
+ if (do_signal(&saveset, regs))
+ return -EINTR;
+ }
+}
+
+asmlinkage int
+do_rt_sigsuspend(struct pt_regs *regs)
+{
+ sigset_t __user *unewset = (sigset_t __user *)regs->d1;
+ size_t sigsetsize = (size_t)regs->d2;
+ sigset_t saveset, newset;
+
+ /* XXX: Don't preclude handling different sized sigset_t's. */
+ if (sigsetsize != sizeof(sigset_t))
+ return -EINVAL;
+
+ if (copy_from_user(&newset, unewset, sizeof(newset)))
+ return -EFAULT;
+ sigdelsetmask(&newset, ~_BLOCKABLE);
+
+ spin_lock_irq(¤t->sighand->siglock);
+ saveset = current->blocked;
+ current->blocked = newset;
+ recalc_sigpending();
+ spin_unlock_irq(¤t->sighand->siglock);
+
+ regs->d0 = -EINTR;
+ while (1) {
+ current->state = TASK_INTERRUPTIBLE;
+ schedule();
+ if (do_signal(&saveset, regs))
+ return -EINTR;
+ }
+}
+
+asmlinkage int
+sys_sigaction(int sig, const struct old_sigaction __user *act,
+ struct old_sigaction __user *oact)
+{
+ struct k_sigaction new_ka, old_ka;
+ int ret;
+
+ if (act) {
+ old_sigset_t mask;
+ if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
+ __get_user(new_ka.sa.sa_handler, &act->sa_handler) ||
+ __get_user(new_ka.sa.sa_restorer, &act->sa_restorer))
+ return -EFAULT;
+ __get_user(new_ka.sa.sa_flags, &act->sa_flags);
+ __get_user(mask, &act->sa_mask);
+ siginitset(&new_ka.sa.sa_mask, mask);
+ }
+
+ ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
+
+ if (!ret && oact) {
+ if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
+ __put_user(old_ka.sa.sa_handler, &oact->sa_handler) ||
+ __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer))
+ return -EFAULT;
+ __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
+ __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
+ }
+
+ return ret;
+}
+
+asmlinkage int
+sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss)
+{
+ return do_sigaltstack(uss, uoss, rdusp());
+}
+
+
+/*
+ * Do a signal return; undo the signal stack.
+ *
+ * Keep the return code on the stack quadword aligned!
+ * That makes the cache flush below easier.
+ */
+
+struct sigframe
+{
+ char __user *pretcode;
+ int sig;
+ int code;
+ struct sigcontext __user *psc;
+ char retcode[16];
+ unsigned long extramask[_NSIG_WORDS-1];
+ struct sigcontext sc;
+};
+
+struct rt_sigframe
+{
+ char __user *pretcode;
+ int sig;
+ struct siginfo __user *pinfo;
+ void __user *puc;
+ char retcode[16];
+ struct siginfo info;
+ struct ucontext uc;
+};
+
+#define FPCONTEXT_SIZE 216
+#define uc_fpstate uc_filler[0]
+#define uc_formatvec uc_filler[FPCONTEXT_SIZE/4]
+#define uc_extra uc_filler[FPCONTEXT_SIZE/4+1]
+
+#ifdef CONFIG_FPU
+static unsigned char fpu_version; /* version num of fpu, set by setup_frame */
+
+static inline int restore_fpu_state(struct sigcontext *sc)
+{
+ int err = 1;
+
+ if (FPU_IS_EMU) {
+ /* restore registers */
+ memcpy(current->thread.fpcntl, sc->sc_fpcntl, 12);
+ memcpy(current->thread.fp, sc->sc_fpregs, 24);
+ return 0;
+ }
+
+ if (CPU_IS_060 ? sc->sc_fpstate[2] : sc->sc_fpstate[0]) {
+ /* Verify the frame format. */
+ if (!CPU_IS_060 && (sc->sc_fpstate[0] != fpu_version))
+ goto out;
+ if (CPU_IS_020_OR_030) {
+ if (m68k_fputype & FPU_68881 &&
+ !(sc->sc_fpstate[1] == 0x18 || sc->sc_fpstate[1] == 0xb4))
+ goto out;
+ if (m68k_fputype & FPU_68882 &&
+ !(sc->sc_fpstate[1] == 0x38 || sc->sc_fpstate[1] == 0xd4))
+ goto out;
+ } else if (CPU_IS_040) {
+ if (!(sc->sc_fpstate[1] == 0x00 ||
+ sc->sc_fpstate[1] == 0x28 ||
+ sc->sc_fpstate[1] == 0x60))
+ goto out;
+ } else if (CPU_IS_060) {
+ if (!(sc->sc_fpstate[3] == 0x00 ||
+ sc->sc_fpstate[3] == 0x60 ||
+ sc->sc_fpstate[3] == 0xe0))
+ goto out;
+ } else
+ goto out;
+
+ }
+ err = 0;
+
+out:
+ return err;
+}
+
+static inline int rt_restore_fpu_state(struct ucontext __user *uc)
+{
+ unsigned char fpstate[FPCONTEXT_SIZE];
+ int context_size = CPU_IS_060 ? 8 : 0;
+ fpregset_t fpregs;
+ int err = 1;
+
+ if (FPU_IS_EMU) {
+ /* restore fpu control register */
+ if (__copy_from_user(current->thread.fpcntl,
+ uc->uc_mcontext.fpregs.f_fpcntl, 12))
+ goto out;
+ /* restore all other fpu register */
+ if (__copy_from_user(current->thread.fp,
+ uc->uc_mcontext.fpregs.f_fpregs, 96))
+ goto out;
+ return 0;
+ }
+
+ if (__get_user(*(long *)fpstate, (long __user *)&uc->uc_fpstate))
+ goto out;
+ if (CPU_IS_060 ? fpstate[2] : fpstate[0]) {
+ if (!CPU_IS_060)
+ context_size = fpstate[1];
+ /* Verify the frame format. */
+ if (!CPU_IS_060 && (fpstate[0] != fpu_version))
+ goto out;
+ if (CPU_IS_020_OR_030) {
+ if (m68k_fputype & FPU_68881 &&
+ !(context_size == 0x18 || context_size == 0xb4))
+ goto out;
+ if (m68k_fputype & FPU_68882 &&
+ !(context_size == 0x38 || context_size == 0xd4))
+ goto out;
+ } else if (CPU_IS_040) {
+ if (!(context_size == 0x00 ||
+ context_size == 0x28 ||
+ context_size == 0x60))
+ goto out;
+ } else if (CPU_IS_060) {
+ if (!(fpstate[3] == 0x00 ||
+ fpstate[3] == 0x60 ||
+ fpstate[3] == 0xe0))
+ goto out;
+ } else
+ goto out;
+ if (__copy_from_user(&fpregs, &uc->uc_mcontext.fpregs,
+ sizeof(fpregs)))
+ goto out;
+ }
+ if (context_size &&
+ __copy_from_user(fpstate + 4, (long __user *)&uc->uc_fpstate + 1,
+ context_size))
+ goto out;
+ err = 0;
+
+out:
+ return err;
+}
+#endif
+
+static inline int
+restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *usc,
+ void __user *fp, int *pd0)
+{
+ int fsize, formatvec;
+ struct sigcontext context;
+ int err = 0;
+
+ /* get previous context */
+ if (copy_from_user(&context, usc, sizeof(context)))
+ goto badframe;
+
+ /* restore passed registers */
+ regs->d1 = context.sc_d1;
+ regs->a0 = context.sc_a0;
+ regs->a1 = context.sc_a1;
+ regs->sr = (regs->sr & 0xff00) | (context.sc_sr & 0xff);
+ regs->pc = context.sc_pc;
+ regs->orig_d0 = -1; /* disable syscall checks */
+ wrusp(context.sc_usp);
+ formatvec = context.sc_formatvec;
+ regs->format = formatvec >> 12;
+ regs->vector = formatvec & 0xfff;
+
+#ifdef CONFIG_FPU
+ err = restore_fpu_state(&context);
+#endif
+
+ fsize = frame_extra_sizes[regs->format];
+ if (fsize < 0) {
+ /*
+ * user process trying to return with weird frame format
+ */
+#ifdef DEBUG
+ printk(KERN_DEBUG "user process returning with weird \
+ frame format\n");
+#endif
+ goto badframe;
+ }
+
+ /* OK. Make room on the supervisor stack for the extra junk,
+ * if necessary.
+ */
+
+ {
+ struct switch_stack *sw = (struct switch_stack *)regs - 1;
+ regs->d0 = context.sc_d0;
+#define frame_offset (sizeof(struct pt_regs)+sizeof(struct switch_stack))
+ __asm__ __volatile__
+ (" movel %0,%/sp\n\t"
+ " bra ret_from_signal\n"
+ "4:\n"
+ ".section __ex_table,\"a\"\n"
+ " .align 4\n"
+ " .long 2b,4b\n"
+ ".previous"
+ : /* no outputs, it doesn't ever return */
+ : "a" (sw), "d" (fsize), "d" (frame_offset/4-1),
+ "n" (frame_offset), "a" (fp)
+ : "a0");
+#undef frame_offset
+ /*
+ * If we ever get here an exception occurred while
+ * building the above stack-frame.
+ */
+ goto badframe;
+ }
+
+ *pd0 = context.sc_d0;
+ return err;
+
+badframe:
+ return 1;
+}
+
+static inline int
+rt_restore_ucontext(struct pt_regs *regs, struct switch_stack *sw,
+ struct ucontext __user *uc, int *pd0)
+{
+ int fsize, temp;
+ greg_t __user *gregs = uc->uc_mcontext.gregs;
+ unsigned long usp;
+ int err;
+
+ err = __get_user(temp, &uc->uc_mcontext.version);
+ if (temp != MCONTEXT_VERSION)
+ goto badframe;
+ /* restore passed registers */
+ err |= __get_user(regs->d0, &gregs[0]);
+ err |= __get_user(regs->d1, &gregs[1]);
+ err |= __get_user(regs->d2, &gregs[2]);
+ err |= __get_user(regs->d3, &gregs[3]);
+ err |= __get_user(regs->d4, &gregs[4]);
+ err |= __get_user(regs->d5, &gregs[5]);
+ err |= __get_user(sw->d6, &gregs[6]);
+ err |= __get_user(sw->d7, &gregs[7]);
+ err |= __get_user(regs->a0, &gregs[8]);
+ err |= __get_user(regs->a1, &gregs[9]);
+ err |= __get_user(regs->a2, &gregs[10]);
+ err |= __get_user(sw->a3, &gregs[11]);
+ err |= __get_user(sw->a4, &gregs[12]);
+ err |= __get_user(sw->a5, &gregs[13]);
+ err |= __get_user(sw->a6, &gregs[14]);
+ err |= __get_user(usp, &gregs[15]);
+ wrusp(usp);
+ err |= __get_user(regs->pc, &gregs[16]);
+ err |= __get_user(temp, &gregs[17]);
+ regs->sr = (regs->sr & 0xff00) | (temp & 0xff);
+ regs->orig_d0 = -1; /* disable syscall checks */
+ err |= __get_user(temp, &uc->uc_formatvec);
+ regs->format = temp >> 12;
+ regs->vector = temp & 0xfff;
+
+#ifdef CONFIG_FPU
+ err |= rt_restore_fpu_state(uc);
+#endif
+
+ if (do_sigaltstack(&uc->uc_stack, NULL, usp) == -EFAULT)
+ goto badframe;
+
+ fsize = frame_extra_sizes[regs->format];
+ if (fsize < 0) {
+ /*
+ * user process trying to return with weird frame format
+ */
+#ifdef DEBUG
+ printk(KERN_DEBUG "user process returning with weird \
+ frame format\n");
+#endif
+ goto badframe;
+ }
+
+ /* OK. Make room on the supervisor stack for the extra junk,
+ * if necessary.
+ */
+
+ {
+#define frame_offset (sizeof(struct pt_regs)+sizeof(struct switch_stack))
+ __asm__ __volatile__
+ (" movel %0,%/sp\n\t"
+ " bra ret_from_signal\n"
+ "4:\n"
+ ".section __ex_table,\"a\"\n"
+ " .align 4\n"
+ " .long 2b,4b\n"
+ ".previous"
+ : /* no outputs, it doesn't ever return */
+ : "a" (sw), "d" (fsize), "d" (frame_offset/4-1),
+ "n" (frame_offset), "a" (&uc->uc_extra)
+ : "a0");
+#undef frame_offset
+ /*
+ * If we ever get here an exception occurred while
+ * building the above stack-frame.
+ */
+ goto badframe;
+ }
+
+ *pd0 = regs->d0;
+ return err;
+
+badframe:
+ return 1;
+}
+
+asmlinkage int do_sigreturn(unsigned long __unused)
+{
+ struct switch_stack *sw = (struct switch_stack *) &__unused;
+ struct pt_regs *regs = (struct pt_regs *) (sw + 1);
+ unsigned long usp = rdusp();
+ struct sigframe __user *frame = (struct sigframe __user *)(usp - 4);
+ sigset_t set;
+ int d0;
+
+ if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
+ goto badframe;
+ if (__get_user(set.sig[0], &frame->sc.sc_mask) ||
+ (_NSIG_WORDS > 1 &&
+ __copy_from_user(&set.sig[1], &frame->extramask,
+ sizeof(frame->extramask))))
+ goto badframe;
+
+ sigdelsetmask(&set, ~_BLOCKABLE);
+ spin_lock_irq(¤t->sighand->siglock);
+ current->blocked = set;
+ recalc_sigpending();
+ spin_unlock_irq(¤t->sighand->siglock);
+
+ if (restore_sigcontext(regs, &frame->sc, frame + 1, &d0))
+ goto badframe;
+ return d0;
+
+badframe:
+ force_sig(SIGSEGV, current);
+ return 0;
+}
+
+asmlinkage int do_rt_sigreturn(unsigned long __unused)
+{
+ struct switch_stack *sw = (struct switch_stack *) &__unused;
+ struct pt_regs *regs = (struct pt_regs *) (sw + 1);
+ unsigned long usp = rdusp();
+ struct rt_sigframe __user *frame =
+ (struct rt_sigframe __user *)(usp - 4);
+ sigset_t set;
+ int d0;
+
+ if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
+ goto badframe;
+ if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
+ goto badframe;
+
+ sigdelsetmask(&set, ~_BLOCKABLE);
+ spin_lock_irq(¤t->sighand->siglock);
+ current->blocked = set;
+ recalc_sigpending();
+ spin_unlock_irq(¤t->sighand->siglock);
+
+ if (rt_restore_ucontext(regs, sw, &frame->uc, &d0))
+ goto badframe;
+ return d0;
+
+badframe:
+ force_sig(SIGSEGV, current);
+ return 0;
+}
+
+#ifdef CONFIG_FPU
+/*
+ * Set up a signal frame.
+ */
+
+static inline void save_fpu_state(struct sigcontext *sc, struct pt_regs *regs)
+{
+ if (FPU_IS_EMU) {
+ /* save registers */
+ memcpy(sc->sc_fpcntl, current->thread.fpcntl, 12);
+ memcpy(sc->sc_fpregs, current->thread.fp, 24);
+ return;
+ }
+}
+
+static inline int rt_save_fpu_state(struct ucontext __user *uc,
+ struct pt_regs *regs)
+{
+ int err = 0;
+
+ if (FPU_IS_EMU) {
+ /* save fpu control register */
+ err |= copy_to_user(uc->uc_mcontext.fpregs.f_fpcntl,
+ current->thread.fpcntl, 12);
+ /* save all other fpu register */
+ err |= copy_to_user(uc->uc_mcontext.fpregs.f_fpregs,
+ current->thread.fp, 96);
+ return err;
+ }
+
+ return err;
+}
+#endif
+
+static void setup_sigcontext(struct sigcontext *sc, struct pt_regs *regs,
+ unsigned long mask)
+{
+ sc->sc_mask = mask;
+ sc->sc_usp = rdusp();
+ sc->sc_d0 = regs->d0;
+ sc->sc_d1 = regs->d1;
+ sc->sc_a0 = regs->a0;
+ sc->sc_a1 = regs->a1;
+ sc->sc_sr = regs->sr;
+ sc->sc_pc = regs->pc;
+ sc->sc_formatvec = regs->format << 12 | regs->vector;
+#ifdef CONFIG_FPU
+ save_fpu_state(sc, regs);
+#endif
+}
+
+static inline int rt_setup_ucontext(struct ucontext __user *uc,
+ struct pt_regs *regs)
+{
+ struct switch_stack *sw = (struct switch_stack *)regs - 1;
+ greg_t __user *gregs = uc->uc_mcontext.gregs;
+ int err = 0;
+
+ err |= __put_user(MCONTEXT_VERSION, &uc->uc_mcontext.version);
+ err |= __put_user(regs->d0, &gregs[0]);
+ err |= __put_user(regs->d1, &gregs[1]);
+ err |= __put_user(regs->d2, &gregs[2]);
+ err |= __put_user(regs->d3, &gregs[3]);
+ err |= __put_user(regs->d4, &gregs[4]);
+ err |= __put_user(regs->d5, &gregs[5]);
+ err |= __put_user(sw->d6, &gregs[6]);
+ err |= __put_user(sw->d7, &gregs[7]);
+ err |= __put_user(regs->a0, &gregs[8]);
+ err |= __put_user(regs->a1, &gregs[9]);
+ err |= __put_user(regs->a2, &gregs[10]);
+ err |= __put_user(sw->a3, &gregs[11]);
+ err |= __put_user(sw->a4, &gregs[12]);
+ err |= __put_user(sw->a5, &gregs[13]);
+ err |= __put_user(sw->a6, &gregs[14]);
+ err |= __put_user(rdusp(), &gregs[15]);
+ err |= __put_user(regs->pc, &gregs[16]);
+ err |= __put_user(regs->sr, &gregs[17]);
+ err |= __put_user((regs->format << 12) | regs->vector,
+ &uc->uc_formatvec);
+#ifdef CONFIG_FPU
+ err |= rt_save_fpu_state(uc, regs);
+#endif
+ return err;
+}
+
+static inline void push_cache(unsigned long vaddr)
+{
+#if 0
+// JKM -- need to add into the old cpushl cache stuff
+ cf_cache_push(__pa(vaddr), 8);
+#endif
+}
+
+static inline void __user *
+get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size)
+{
+ unsigned long usp;
+
+ /* Default to using normal stack. */
+ usp = rdusp();
+
+ /* This is the X/Open sanctioned signal stack switching. */
+ if (ka->sa.sa_flags & SA_ONSTACK) {
+ if (!sas_ss_flags(usp))
+ usp = current->sas_ss_sp + current->sas_ss_size;
+ }
+ return (void __user *)((usp - frame_size) & -8UL);
+}
+
+static void setup_frame(int sig, struct k_sigaction *ka,
+ sigset_t *set, struct pt_regs *regs)
+{
+ struct sigframe __user *frame;
+ int fsize = frame_extra_sizes[regs->format];
+ struct sigcontext context;
+ int err = 0;
+
+ if (fsize < 0) {
+#ifdef DEBUG
+ printk(KERN_DEBUG "setup_frame: Unknown frame format %#x\n",
+ regs->format);
+#endif
+ goto give_sigsegv;
+ }
+
+ frame = get_sigframe(ka, regs, sizeof(*frame));
+
+ err |= __put_user((current_thread_info()->exec_domain
+ && current_thread_info()->exec_domain->signal_invmap
+ && sig < 32
+ ? current_thread_info()->exec_domain->signal_invmap[sig]
+ : sig),
+ &frame->sig);
+
+ err |= __put_user(regs->vector, &frame->code);
+ err |= __put_user(&frame->sc, &frame->psc);
+
+ if (_NSIG_WORDS > 1)
+ err |= copy_to_user(frame->extramask, &set->sig[1],
+ sizeof(frame->extramask));
+
+ setup_sigcontext(&context, regs, set->sig[0]);
+ err |= copy_to_user(&frame->sc, &context, sizeof(context));
+
+ /* Set up to return from userspace. */
+ err |= __put_user(frame->retcode, &frame->pretcode);
+ /* moveq #,d0; trap #0 */
+ err |= __put_user(0x70004e40 + (__NR_sigreturn << 16),
+ (long __user *)(frame->retcode));
+
+ if (err)
+ goto give_sigsegv;
+
+ push_cache((unsigned long) &frame->retcode);
+
+ /* Set up registers for signal handler */
+ wrusp((unsigned long) frame);
+ regs->pc = (unsigned long) ka->sa.sa_handler;
+
+adjust_stack:
+ /* Prepare to skip over the extra stuff in the exception frame. */
+ if (regs->stkadj) {
+ struct pt_regs *tregs =
+ (struct pt_regs *)((ulong)regs + regs->stkadj);
+#ifdef DEBUG
+ printk(KERN_DEBUG "Performing stackadjust=%04x\n",
+ regs->stkadj);
+#endif
+ /* This must be copied with decreasing addresses to
+ handle overlaps. */
+ tregs->vector = 0;
+ tregs->format = 0;
+ tregs->pc = regs->pc;
+ tregs->sr = regs->sr;
+ }
+ return;
+
+give_sigsegv:
+ force_sigsegv(sig, current);
+ goto adjust_stack;
+}
+
+static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
+ sigset_t *set, struct pt_regs *regs)
+{
+ struct rt_sigframe __user *frame;
+ int fsize = frame_extra_sizes[regs->format];
+ int err = 0;
+
+ if (fsize < 0) {
+#ifdef DEBUG
+ printk(KERN_DEBUG "setup_frame: Unknown frame format %#x\n",
+ regs->format);
+#endif
+ goto give_sigsegv;
+ }
+
+ frame = get_sigframe(ka, regs, sizeof(*frame));
+
+ if (fsize) {
+ err |= copy_to_user(&frame->uc.uc_extra, regs + 1, fsize);
+ regs->stkadj = fsize;
+ }
+
+ err |= __put_user((current_thread_info()->exec_domain
+ && current_thread_info()->exec_domain->signal_invmap
+ && sig < 32
+ ? current_thread_info()->exec_domain->signal_invmap[sig]
+ : sig),
+ &frame->sig);
+ err |= __put_user(&frame->info, &frame->pinfo);
+ err |= __put_user(&frame->uc, &frame->puc);
+ err |= copy_siginfo_to_user(&frame->info, info);
+
+ /* Create the ucontext. */
+ err |= __put_user(0, &frame->uc.uc_flags);
+ err |= __put_user(NULL, &frame->uc.uc_link);
+ err |= __put_user((void __user *)current->sas_ss_sp,
+ &frame->uc.uc_stack.ss_sp);
+ err |= __put_user(sas_ss_flags(rdusp()),
+ &frame->uc.uc_stack.ss_flags);
+ err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size);
+ err |= rt_setup_ucontext(&frame->uc, regs);
+ err |= copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
+
+ /* Set up to return from userspace. */
+ err |= __put_user(frame->retcode, &frame->pretcode);
+
+ /* moveq #,d0; andi.l #,D0; trap #0 */
+ err |= __put_user(0x70AD0280, (long *)(frame->retcode + 0));
+ err |= __put_user(0x000000ff, (long *)(frame->retcode + 4));
+ err |= __put_user(0x4e400000, (long *)(frame->retcode + 8));
+
+ if (err)
+ goto give_sigsegv;
+
+ push_cache((unsigned long) &frame->retcode);
+
+ /* Set up registers for signal handler */
+ wrusp((unsigned long) frame);
+ regs->pc = (unsigned long) ka->sa.sa_handler;
+
+adjust_stack:
+ /* Prepare to skip over the extra stuff in the exception frame. */
+ if (regs->stkadj) {
+ struct pt_regs *tregs =
+ (struct pt_regs *)((ulong)regs + regs->stkadj);
+#ifdef DEBUG
+ printk(KERN_DEBUG "Performing stackadjust=%04x\n",
+ regs->stkadj);
+#endif
+ /* This must be copied with decreasing addresses to
+ handle overlaps. */
+ tregs->vector = 0;
+ tregs->format = 0;
+ tregs->pc = regs->pc;
+ tregs->sr = regs->sr;
+ }
+ return;
+
+give_sigsegv:
+ force_sigsegv(sig, current);
+ goto adjust_stack;
+}
+
+static inline void
+handle_restart(struct pt_regs *regs, struct k_sigaction *ka, int has_handler)
+{
+ switch (regs->d0) {
+ case -ERESTARTNOHAND:
+ if (!has_handler)
+ goto do_restart;
+ regs->d0 = -EINTR;
+ break;
+
+ case -ERESTARTSYS:
+ if (has_handler && !(ka->sa.sa_flags & SA_RESTART)) {
+ regs->d0 = -EINTR;
+ break;
+ }
+ /* fallthrough */
+ case -ERESTARTNOINTR:
+do_restart:
+ regs->d0 = regs->orig_d0;
+ regs->pc -= 2;
+ break;
+ }
+}
+
+/*
+ * OK, we're invoking a handler
+ */
+static void
+handle_signal(int sig, struct k_sigaction *ka, siginfo_t *info,
+ sigset_t *oldset, struct pt_regs *regs)
+{
+ /* are we from a system call? */
+ if (regs->orig_d0 >= 0)
+ /* If so, check system call restarting.. */
+ handle_restart(regs, ka, 1);
+
+ /* set up the stack frame */
+ if (ka->sa.sa_flags & SA_SIGINFO)
+ setup_rt_frame(sig, ka, info, oldset, regs);
+ else
+ setup_frame(sig, ka, oldset, regs);
+
+ if (ka->sa.sa_flags & SA_ONESHOT)
+ ka->sa.sa_handler = SIG_DFL;
+
+ spin_lock_irq(¤t->sighand->siglock);
+ sigorsets(¤t->blocked, ¤t->blocked, &ka->sa.sa_mask);
+ if (!(ka->sa.sa_flags & SA_NODEFER))
+ sigaddset(¤t->blocked, sig);
+ recalc_sigpending();
+ spin_unlock_irq(¤t->sighand->siglock);
+}
+
+/*
+ * Note that 'init' is a special process: it doesn't get signals it doesn't
+ * want to handle. Thus you cannot kill init even with a SIGKILL even by
+ * mistake.
+ */
+asmlinkage int do_signal(sigset_t *oldset, struct pt_regs *regs)
+{
+ siginfo_t info;
+ struct k_sigaction ka;
+ int signr;
+
+ current->thread.esp0 = (unsigned long) regs;
+
+ if (!oldset)
+ oldset = ¤t->blocked;
+
+ signr = get_signal_to_deliver(&info, &ka, regs, NULL);
+ if (signr > 0) {
+ /* Whee! Actually deliver the signal. */
+ handle_signal(signr, &ka, &info, oldset, regs);
+ return 1;
+ }
+
+ /* Did we come from a system call? */
+ if (regs->orig_d0 >= 0)
+ /* Restart the system call - no handlers present */
+ handle_restart(regs, NULL, 0);
+
+ return 0;
+}
#define ARCH_DMA_MINALIGN L1_CACHE_BYTES
-#ifdef CONFIG_COLDFIRE
-
-# ifdef CONFIG_M547X_8X
-# include "asm/cache_coldfire_m547x_8x.h"
-# endif //CONFIG_M547X_8X
-
-#endif //CONFIG_COLDFIRE
-
#endif //!__ARCH_M68K_CACHE_H
#else
# ifdef CONFIG_COLDFIRE
-# ifdef CONFIG_M547X_8X
-# include "cacheflush_coldfire_m547x_8x.h"
-# else //CONFIG_M547X_8X
-# error No Cache for this Coldfire.
-# endif //CONFIG_M547X_8X
+# ifdef CONFIG_M5445X
+# include "mcf_5445x_cacheflush.h"
+# else
+# include "mcf_548x_cacheflush.h"
+# endif
# else //CONFIG_COLDFIRE
# include "cacheflush_mm.h"
# endif //CONFIG_COLDFIRE
#include <asm/thread_info.h>
#endif
+#ifdef CONFIG_COLDFIRE
+#include <asm/coldfire.h>
+#endif
+
/*
* Stack layout in 'ret_from_exception':
*
* 2C(sp) - sr
* 2E(sp) - pc
* 32(sp) - format & vector
+ * 36(sp) - MMUSR (Coldfire only)
+ * 3A(sp) - MMUAR (Coldfire only)
*/
/*
* that the stack frame is NOT for syscall
*/
.macro save_all_int
+#ifdef CONFIG_COLDFIRE
+ movel MMUSR,%sp@-
+ movel MMUAR,%sp@-
+#endif
clrl %sp@- | stk_adj
pea -1:w | orig d0
movel %d0,%sp@- | d0
.endm
.macro save_all_sys
+#ifdef CONFIG_COLDFIRE
+ movel MMUSR,%sp@-
+ movel MMUAR,%sp@-
+#endif
clrl %sp@- | stk_adj
movel %d0,%sp@- | orig d0
movel %d0,%sp@- | d0
movel %sp@+,%d0
addql #4,%sp | orig d0
addl %sp@+,%sp | stk adj
+#ifdef CONFIG_COLDFIRE
+ addql #8,%sp | MMUAR & MMUSR
+#endif
rte
.endm
--- /dev/null
+/*
+ * arch/m68k/include/asm/mcf_5445x_cacheflush.h - Coldfire 5445x Cache
+ *
+ * Based on arch/m68k/include/asm/cacheflush.h
+ *
+ * Coldfire pieces by:
+ * Kurt Mahan kmahan@freescale.com
+ *
+ * Copyright Freescale Semiconductor, Inc. 2007, 2008
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+#ifndef M68K_CF_5445x_CACHEFLUSH_H
+#define M68K_CF_5445x_CACHEFLUSH_H
+
+#include <asm/mcfcache.h>
+
+/*
+ * Coldfire Cache Model
+ *
+ * The Coldfire processors use a Harvard architecture cache configured
+ * as four-way set associative. The cache does not implement bus snooping
+ * so cache coherency with other masters must be maintained in software.
+ *
+ * The cache is managed via the CPUSHL instruction in conjunction with
+ * bits set in the CACR (cache control register). Currently the code
+ * uses the CPUSHL enhancement which adds the ability to
+ * invalidate/clear/push a cacheline by physical address. This feature
+ * is designated in the Hardware Configuration Register [D1-CPES].
+ *
+ * CACR Bits:
+ * DPI[28] cpushl invalidate disable for d-cache
+ * IDPI[12] cpushl invalidate disable for i-cache
+ * SPA[14] cpushl search by physical address
+ * IVO[20] cpushl invalidate only
+ *
+ * Random Terminology:
+ * * invalidate = reset the cache line's valid bit
+ * * push = generate a line-sized store of the data if its contents are marked
+ * as modifed (the modified flag is cleared after the store)
+ * * clear = push + invalidate
+ */
+
+/**
+ * flush_icache - Flush all of the instruction cache
+ */
+static inline void flush_icache(void)
+{
+ asm volatile("nop\n"
+ "moveq%.l #0,%%d0\n"
+ "moveq%.l #0,%%d1\n"
+ "move%.l %%d0,%%a0\n"
+ "1:\n"
+ "cpushl %%ic,(%%a0)\n"
+ "add%.l #0x0010,%%a0\n"
+ "addq%.l #1,%%d1\n"
+ "cmpi%.l %0,%%d1\n"
+ "bne 1b\n"
+ "moveq%.l #0,%%d1\n"
+ "addq%.l #1,%%d0\n"
+ "move%.l %%d0,%%a0\n"
+ "cmpi%.l #4,%%d0\n"
+ "bne 1b\n"
+ : : "i" (CACHE_SETS)
+ : "a0", "d0", "d1");
+}
+
+/**
+ * flush_dcache - Flush all of the data cache
+ */
+static inline void flush_dcache(void)
+{
+ asm volatile("nop\n"
+ "moveq%.l #0,%%d0\n"
+ "moveq%.l #0,%%d1\n"
+ "move%.l %%d0,%%a0\n"
+ "1:\n"
+ "cpushl %%dc,(%%a0)\n"
+ "add%.l #0x0010,%%a0\n"
+ "addq%.l #1,%%d1\n"
+ "cmpi%.l %0,%%d1\n"
+ "bne 1b\n"
+ "moveq%.l #0,%%d1\n"
+ "addq%.l #1,%%d0\n"
+ "move%.l %%d0,%%a0\n"
+ "cmpi%.l #4,%%d0\n"
+ "bne 1b\n"
+ : : "i" (CACHE_SETS)
+ : "a0", "d0", "d1");
+}
+
+/**
+ * flush_bcache - Flush all of both caches
+ */
+static inline void flush_bcache(void)
+{
+ asm volatile("nop\n"
+ "moveq%.l #0,%%d0\n"
+ "moveq%.l #0,%%d1\n"
+ "move%.l %%d0,%%a0\n"
+ "1:\n"
+ "cpushl %%bc,(%%a0)\n"
+ "add%.l #0x0010,%%a0\n"
+ "addq%.l #1,%%d1\n"
+ "cmpi%.l %0,%%d1\n"
+ "bne 1b\n"
+ "moveq%.l #0,%%d1\n"
+ "addq%.l #1,%%d0\n"
+ "move%.l %%d0,%%a0\n"
+ "cmpi%.l #4,%%d0\n"
+ "bne 1b\n"
+ : : "i" (CACHE_SETS)
+ : "a0", "d0", "d1");
+}
+
+/**
+ * cf_cache_clear - invalidate cache
+ * @paddr: starting physical address
+ * @len: number of bytes
+ *
+ * Invalidate cache lines starting at paddr for len bytes.
+ * Those lines are not pushed.
+ */
+static inline void cf_cache_clear(unsigned long paddr, int len)
+{
+ /* number of lines */
+ len = (len + (CACHE_LINE_SIZE-1)) / CACHE_LINE_SIZE;
+ if (len == 0)
+ return;
+
+ /* align on set boundary */
+ paddr &= 0xfffffff0;
+
+ asm volatile("nop\n"
+ "move%.l %2,%%d0\n"
+ "or%.l %3,%%d0\n"
+ "movec %%d0,%%cacr\n"
+ "move%.l %0,%%a0\n"
+ "move%.l %1,%%d0\n"
+ "1:\n"
+ "cpushl %%bc,(%%a0)\n"
+ "lea 0x10(%%a0),%%a0\n"
+ "subq%.l #1,%%d0\n"
+ "bne%.b 1b\n"
+ "movec %2,%%cacr\n"
+ : : "a" (paddr), "r" (len),
+ "r" (shadow_cacr),
+ "i" (CF_CACR_SPA+CF_CACR_IVO)
+ : "a0", "d0");
+}
+
+/**
+ * cf_cache_push - Push dirty cache out with no invalidate
+ * @paddr: starting physical address
+ * @len: number of bytes
+ *
+ * Push the any dirty lines starting at paddr for len bytes.
+ * Those lines are not invalidated.
+ */
+static inline void cf_cache_push(unsigned long paddr, int len)
+{
+ /* number of lines */
+ len = (len + (CACHE_LINE_SIZE-1)) / CACHE_LINE_SIZE;
+ if (len == 0)
+ return;
+
+ /* align on set boundary */
+ paddr &= 0xfffffff0;
+
+ asm volatile("nop\n"
+ "move%.l %2,%%d0\n"
+ "or%.l %3,%%d0\n"
+ "movec %%d0,%%cacr\n"
+ "move%.l %0,%%a0\n"
+ "move%.l %1,%%d0\n"
+ "1:\n"
+ "cpushl %%bc,(%%a0)\n"
+ "lea 0x10(%%a0),%%a0\n"
+ "subq%.l #1,%%d0\n"
+ "bne.b 1b\n"
+ "movec %2,%%cacr\n"
+ : : "a" (paddr), "r" (len),
+ "r" (shadow_cacr),
+ "i" (CF_CACR_SPA+CF_CACR_DPI+CF_CACR_IDPI)
+ : "a0", "d0");
+}
+
+/**
+ * cf_cache_flush - Push dirty cache out and invalidate
+ * @paddr: starting physical address
+ * @len: number of bytes
+ *
+ * Push the any dirty lines starting at paddr for len bytes and
+ * invalidate those lines.
+ */
+static inline void cf_cache_flush(unsigned long paddr, int len)
+{
+ /* number of lines */
+ len = (len + (CACHE_LINE_SIZE-1)) / CACHE_LINE_SIZE;
+ if (len == 0)
+ return;
+
+ /* align on set boundary */
+ paddr &= 0xfffffff0;
+
+ asm volatile("nop\n"
+ "move%.l %2,%%d0\n"
+ "or%.l %3,%%d0\n"
+ "movec %%d0,%%cacr\n"
+ "move%.l %0,%%a0\n"
+ "move%.l %1,%%d0\n"
+ "1:\n"
+ "cpushl %%bc,(%%a0)\n"
+ "lea 0x10(%%a0),%%a0\n"
+ "subq%.l #1,%%d0\n"
+ "bne.b 1b\n"
+ "movec %2,%%cacr\n"
+ : : "a" (paddr), "r" (len),
+ "r" (shadow_cacr),
+ "i" (CF_CACR_SPA)
+ : "a0", "d0");
+}
+
+/**
+ * cf_cache_flush_range - Push dirty data/inst cache in range out and invalidate
+ * @vstart - starting virtual address
+ * @vend: ending virtual address
+ *
+ * Push the any dirty data/instr lines starting at paddr for len bytes and
+ * invalidate those lines.
+ */
+static inline void cf_cache_flush_range(unsigned long vstart, unsigned long vend)
+{
+ int len;
+
+ /* align on set boundary */
+ vstart &= 0xfffffff0;
+ vend = PAGE_ALIGN((vend + (CACHE_LINE_SIZE-1))) & 0xfffffff0;
+ len = vend - vstart;
+ if (len == 0)
+ return;
+ vstart = __pa(vstart);
+ vend = vstart + len;
+
+ asm volatile("nop\n"
+ "move%.l %2,%%d0\n"
+ "or%.l %3,%%d0\n"
+ "movec %%d0,%%cacr\n"
+ "move%.l %0,%%a0\n"
+ "move%.l %1,%%a1\n"
+ "1:\n"
+ "cpushl %%bc,(%%a0)\n"
+ "lea 0x10(%%a0),%%a0\n"
+ "cmpa%.l %%a0,%%a1\n"
+ "bne.b 1b\n"
+ "movec %2,%%cacr\n"
+ : /* no return */
+ : "a" (vstart), "a" (vend),
+ "r" (shadow_cacr),
+ "i" (CF_CACR_SPA)
+ : "a0", "a1", "d0");
+}
+
+/**
+ * cf_dcache_flush_range - Push dirty data cache in range out and invalidate
+ * @vstart - starting virtual address
+ * @vend: ending virtual address
+ *
+ * Push the any dirty data lines starting at paddr for len bytes and
+ * invalidate those lines.
+ */
+static inline void cf_dcache_flush_range(unsigned long vstart, unsigned long vend)
+{
+ /* align on set boundary */
+ vstart &= 0xfffffff0;
+ vend = (vend + (CACHE_LINE_SIZE-1)) & 0xfffffff0;
+
+ asm volatile("nop\n"
+ "move%.l %2,%%d0\n"
+ "or%.l %3,%%d0\n"
+ "movec %%d0,%%cacr\n"
+ "move%.l %0,%%a0\n"
+ "move%.l %1,%%a1\n"
+ "1:\n"
+ "cpushl %%dc,(%%a0)\n"
+ "lea 0x10(%%a0),%%a0\n"
+ "cmpa%.l %%a0,%%a1\n"
+ "bne.b 1b\n"
+ "movec %2,%%cacr\n"
+ : /* no return */
+ : "a" (__pa(vstart)), "a" (__pa(vend)),
+ "r" (shadow_cacr),
+ "i" (CF_CACR_SPA)
+ : "a0", "a1", "d0");
+}
+
+/**
+ * cf_icache_flush_range - Push dirty inst cache in range out and invalidate
+ * @vstart - starting virtual address
+ * @vend: ending virtual address
+ *
+ * Push the any dirty instr lines starting at paddr for len bytes and
+ * invalidate those lines. This should just be an invalidate since you
+ * shouldn't be able to have dirty instruction cache.
+ */
+static inline void cf_icache_flush_range(unsigned long vstart, unsigned long vend)
+{
+ /* align on set boundary */
+ vstart &= 0xfffffff0;
+ vend = (vend + (CACHE_LINE_SIZE-1)) & 0xfffffff0;
+
+ asm volatile("nop\n"
+ "move%.l %2,%%d0\n"
+ "or%.l %3,%%d0\n"
+ "movec %%d0,%%cacr\n"
+ "move%.l %0,%%a0\n"
+ "move%.l %1,%%a1\n"
+ "1:\n"
+ "cpushl %%ic,(%%a0)\n"
+ "lea 0x10(%%a0),%%a0\n"
+ "cmpa%.l %%a0,%%a1\n"
+ "bne.b 1b\n"
+ "movec %2,%%cacr\n"
+ : /* no return */
+ : "a" (__pa(vstart)), "a" (__pa(vend)),
+ "r" (shadow_cacr),
+ "i" (CF_CACR_SPA)
+ : "a0", "a1", "d0");
+}
+
+/**
+ * flush_cache_mm - Flush an mm_struct
+ * @mm: mm_struct to flush
+ */
+static inline void flush_cache_mm(struct mm_struct *mm)
+{
+ if (mm == current->mm)
+ flush_bcache();
+}
+
+#define flush_cache_dup_mm(mm) flush_cache_mm(mm)
+
+/**
+ * flush_cache_range - Flush a cache range
+ * @vma: vma struct
+ * @start: Starting address
+ * @end: Ending address
+ *
+ * flush_cache_range must be a macro to avoid a dependency on
+ * linux/mm.h which includes this file.
+ */
+static inline void flush_cache_range(struct vm_area_struct *vma,
+ unsigned long start, unsigned long end)
+{
+ if (vma->vm_mm == current->mm)
+ cf_cache_flush_range(start, end);
+}
+
+/**
+ * flush_cache_page - Flush a page of the cache
+ * @vma: vma struct
+ * @vmaddr:
+ * @pfn: page numer
+ *
+ * flush_cache_page must be a macro to avoid a dependency on
+ * linux/mm.h which includes this file.
+ */
+static inline void flush_cache_page(struct vm_area_struct *vma,
+ unsigned long vmaddr, unsigned long pfn)
+{
+ if (vma->vm_mm == current->mm)
+ cf_cache_flush_range(vmaddr, vmaddr+PAGE_SIZE);
+}
+
+/**
+ * __flush_page_to_ram - Push a page out of the cache
+ * @vaddr: Virtual address at start of page
+ *
+ * Push the page at kernel virtual address *vaddr* and clear
+ * the icache.
+ */
+static inline void __flush_page_to_ram(void *vaddr)
+{
+ asm volatile("nop\n"
+ "move%.l %2,%%d0\n"
+ "or%.l %3,%%d0\n"
+ "movec %%d0,%%cacr\n"
+ "move%.l %0,%%d0\n"
+ "and%.l #0xfffffff0,%%d0\n"
+ "move%.l %%d0,%%a0\n"
+ "move%.l %1,%%d0\n"
+ "1:\n"
+ "cpushl %%bc,(%%a0)\n"
+ "lea 0x10(%%a0),%%a0\n"
+ "subq%.l #1,%%d0\n"
+ "bne.b 1b\n"
+ "movec %2,%%cacr\n"
+ : : "a" (__pa(vaddr)), "i" (PAGE_SIZE / CACHE_LINE_SIZE),
+ "r" (shadow_cacr), "i" (CF_CACR_SPA)
+ : "a0", "d0");
+}
+
+/*
+ * Various defines for the kernel.
+ */
+
+extern void cache_clear(unsigned long paddr, int len);
+extern void cache_push(unsigned long paddr, int len);
+extern void flush_icache_range(unsigned long address, unsigned long endaddr);
+
+#define flush_cache_all() flush_bcache()
+#define flush_cache_vmap(start, end) flush_bcache()
+#define flush_cache_vunmap(start, end) flush_bcache()
+
+#define flush_dcache_range(vstart, vend) cf_dcache_flush_range(vstart, vend)
+#define flush_dcache_page(page) __flush_page_to_ram(page_address(page))
+#define flush_dcache_mmap_lock(mapping) do { } while (0)
+#define flush_dcache_mmap_unlock(mapping) do { } while (0)
+
+#define flush_icache_page(vma, page) __flush_page_to_ram(page_address(page))
+
+/**
+ * copy_to_user_page - Copy memory to user page
+ */
+static inline void copy_to_user_page(struct vm_area_struct *vma,
+ struct page *page, unsigned long vaddr,
+ void *dst, void *src, int len)
+{
+ memcpy(dst, src, len);
+ cf_cache_flush(page_to_phys(page), PAGE_SIZE);
+}
+
+/**
+ * copy_from_user_page - Copy memory from user page
+ */
+static inline void copy_from_user_page(struct vm_area_struct *vma,
+ struct page *page, unsigned long vaddr,
+ void *dst, void *src, int len)
+{
+ cf_cache_flush(page_to_phys(page), PAGE_SIZE);
+ memcpy(dst, src, len);
+}
+
+#endif /* M68K_CF_5445x_CACHEFLUSH_H */
--- /dev/null
+/*
+ * arch/m68k/include/asm/mcf_m547x_8x_cacheflush.h - Coldfire 547x/548x Cache
+ *
+ * Based on arch/m68k/include/asm/cacheflush.h
+ *
+ * Coldfire pieces by:
+ * Kurt Mahan kmahan@freescale.com
+ *
+ * Copyright Freescale Semiconductor, Inc. 2007, 2008
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+#ifndef _M68K_MCF_M547X_8X_CACHEFLUSH_H
+#define _M68K_MCF_M547X_8X_CACHEFLUSH_H
+
+/*
+ * Cache handling functions
+ */
+
+#define flush_icache() \
+({ \
+ unsigned long set; \
+ unsigned long start_set; \
+ unsigned long end_set; \
+ \
+ start_set = 0; \
+ end_set = (unsigned long)LAST_DCACHE_ADDR; \
+ \
+ for (set = start_set; set <= end_set; set += (0x10 - 3)) { \
+ asm volatile("cpushl %%ic,(%0)\n" \
+ "\taddq%.l #1,%0\n" \
+ "\tcpushl %%ic,(%0)\n" \
+ "\taddq%.l #1,%0\n" \
+ "\tcpushl %%ic,(%0)\n" \
+ "\taddq%.l #1,%0\n" \
+ "\tcpushl %%ic,(%0)" : "=a" (set) : "a" (set)); \
+ } \
+})
+
+#define flush_dcache() \
+({ \
+ unsigned long set; \
+ unsigned long start_set; \
+ unsigned long end_set; \
+ \
+ start_set = 0; \
+ end_set = (unsigned long)LAST_DCACHE_ADDR; \
+ \
+ for (set = start_set; set <= end_set; set += (0x10 - 3)) { \
+ asm volatile("cpushl %%dc,(%0)\n" \
+ "\taddq%.l #1,%0\n" \
+ "\tcpushl %%dc,(%0)\n" \
+ "\taddq%.l #1,%0\n" \
+ "\tcpushl %%dc,(%0)\n" \
+ "\taddq%.l #1,%0\n" \
+ "\tcpushl %%dc,(%0)" : "=a" (set) : "a" (set)); \
+ } \
+})
+
+#define flush_bcache() \
+({ \
+ unsigned long set; \
+ unsigned long start_set; \
+ unsigned long end_set; \
+ \
+ start_set = 0; \
+ end_set = (unsigned long)LAST_DCACHE_ADDR; \
+ \
+ for (set = start_set; set <= end_set; set += (0x10 - 3)) { \
+ asm volatile("cpushl %%bc,(%0)\n" \
+ "\taddq%.l #1,%0\n" \
+ "\tcpushl %%bc,(%0)\n" \
+ "\taddq%.l #1,%0\n" \
+ "\tcpushl %%bc,(%0)\n" \
+ "\taddq%.l #1,%0\n" \
+ "\tcpushl %%bc,(%0)" : "=a" (set) : "a" (set)); \
+ } \
+})
+
+/*
+ * invalidate the cache for the specified memory range.
+ * It starts at the physical address specified for
+ * the given number of bytes.
+ */
+extern void cache_clear(unsigned long paddr, int len);
+/*
+ * push any dirty cache in the specified memory range.
+ * It starts at the physical address specified for
+ * the given number of bytes.
+ */
+extern void cache_push(unsigned long paddr, int len);
+
+/*
+ * push and invalidate pages in the specified user virtual
+ * memory range.
+ */
+extern void cache_push_v(unsigned long vaddr, int len);
+
+/* This is needed whenever the virtual mapping of the current
+ process changes. */
+
+/**
+ * flush_cache_mm - Flush an mm_struct
+ * @mm: mm_struct to flush
+ */
+static inline void flush_cache_mm(struct mm_struct *mm)
+{
+ if (mm == current->mm)
+ flush_bcache();
+}
+
+#define flush_cache_dup_mm(mm) flush_cache_mm(mm)
+
+#define flush_cache_all() flush_bcache()
+
+/**
+ * flush_cache_range - Flush a cache range
+ * @vma: vma struct
+ * @start: Starting address
+ * @end: Ending address
+ *
+ * flush_cache_range must be a macro to avoid a dependency on
+ * linux/mm.h which includes this file.
+ */
+static inline void flush_cache_range(struct vm_area_struct *vma,
+ unsigned long start, unsigned long end)
+{
+ if (vma->vm_mm == current->mm)
+ flush_bcache();
+// cf_cache_flush_range(start, end);
+}
+
+/**
+ * flush_cache_page - Flush a page of the cache
+ * @vma: vma struct
+ * @vmaddr:
+ * @pfn: page numer
+ *
+ * flush_cache_page must be a macro to avoid a dependency on
+ * linux/mm.h which includes this file.
+ */
+static inline void flush_cache_page(struct vm_area_struct *vma,
+ unsigned long vmaddr, unsigned long pfn)
+{
+ if (vma->vm_mm == current->mm)
+ flush_bcache();
+// cf_cache_flush_range(vmaddr, vmaddr+PAGE_SIZE);
+}
+
+/* Push the page at kernel virtual address and clear the icache */
+/* RZ: use cpush %bc instead of cpush %dc, cinv %ic */
+#define flush_page_to_ram(page) __flush_page_to_ram((void *) page_address(page))
+extern inline void __flush_page_to_ram(void *address)
+{
+ unsigned long set;
+ unsigned long start_set;
+ unsigned long end_set;
+ unsigned long addr = (unsigned long) address;
+
+ addr &= ~(PAGE_SIZE - 1); /* round down to page start address */
+
+ start_set = addr & _ICACHE_SET_MASK;
+ end_set = (addr + PAGE_SIZE-1) & _ICACHE_SET_MASK;
+
+ if (start_set > end_set) {
+ /* from the begining to the lowest address */
+ for (set = 0; set <= end_set; set += (0x10 - 3)) {
+ asm volatile("cpushl %%bc,(%0)\n"
+ "\taddq%.l #1,%0\n"
+ "\tcpushl %%bc,(%0)\n"
+ "\taddq%.l #1,%0\n"
+ "\tcpushl %%bc,(%0)\n"
+ "\taddq%.l #1,%0\n"
+ "\tcpushl %%bc,(%0)" : "=a" (set) : "a" (set));
+ }
+ /* next loop will finish the cache ie pass the hole */
+ end_set = LAST_ICACHE_ADDR;
+ }
+ for (set = start_set; set <= end_set; set += (0x10 - 3)) {
+ asm volatile("cpushl %%bc,(%0)\n"
+ "\taddq%.l #1,%0\n"
+ "\tcpushl %%bc,(%0)\n"
+ "\taddq%.l #1,%0\n"
+ "\tcpushl %%bc,(%0)\n"
+ "\taddq%.l #1,%0\n"
+ "\tcpushl %%bc,(%0)" : "=a" (set) : "a" (set));
+ }
+}
+
+/* Use __flush_page_to_ram() for flush_dcache_page all values are same - MW */
+#define flush_dcache_page(page) \
+ __flush_page_to_ram((void *) page_address(page))
+#define flush_icache_page(vma,pg) \
+ __flush_page_to_ram((void *) page_address(pg))
+#define flush_icache_user_range(adr,len) do { } while (0)
+/* NL */
+#define flush_icache_user_page(vma,page,addr,len) do { } while (0)
+
+/* Push n pages at kernel virtual address and clear the icache */
+/* RZ: use cpush %bc instead of cpush %dc, cinv %ic */
+extern inline void flush_icache_range (unsigned long address,
+ unsigned long endaddr)
+{
+ unsigned long set;
+ unsigned long start_set;
+ unsigned long end_set;
+
+ start_set = address & _ICACHE_SET_MASK;
+ end_set = endaddr & _ICACHE_SET_MASK;
+
+ if (start_set > end_set) {
+ /* from the begining to the lowest address */
+ for (set = 0; set <= end_set; set += (0x10 - 3)) {
+ asm volatile("cpushl %%ic,(%0)\n"
+ "\taddq%.l #1,%0\n"
+ "\tcpushl %%ic,(%0)\n"
+ "\taddq%.l #1,%0\n"
+ "\tcpushl %%ic,(%0)\n"
+ "\taddq%.l #1,%0\n"
+ "\tcpushl %%ic,(%0)" : "=a" (set) : "a" (set));
+ }
+ /* next loop will finish the cache ie pass the hole */
+ end_set = LAST_ICACHE_ADDR;
+ }
+ for (set = start_set; set <= end_set; set += (0x10 - 3)) {
+ asm volatile("cpushl %%ic,(%0)\n"
+ "\taddq%.l #1,%0\n"
+ "\tcpushl %%ic,(%0)\n"
+ "\taddq%.l #1,%0\n"
+ "\tcpushl %%ic,(%0)\n"
+ "\taddq%.l #1,%0\n"
+ "\tcpushl %%ic,(%0)" : "=a" (set) : "a" (set));
+ }
+}
+
+static inline void copy_to_user_page(struct vm_area_struct *vma,
+ struct page *page, unsigned long vaddr,
+ void *dst, void *src, int len)
+{
+ memcpy(dst, src, len);
+ flush_icache_user_page(vma, page, vaddr, len);
+}
+static inline void copy_from_user_page(struct vm_area_struct *vma,
+ struct page *page, unsigned long vaddr,
+ void *dst, void *src, int len)
+{
+ memcpy(dst, src, len);
+}
+
+#define flush_cache_vmap(start, end) flush_cache_all()
+#define flush_cache_vunmap(start, end) flush_cache_all()
+#define flush_dcache_mmap_lock(mapping) do { } while (0)
+#define flush_dcache_mmap_unlock(mapping) do { } while (0)
+
+#endif /* _M68K_CACHEFLUSH_CODLFIRE_M547X_8X_H */
*/
/****************************************************************************/
-#ifndef __M68KNOMMU_MCFCACHE_H
-#define __M68KNOMMU_MCFCACHE_H
+#ifndef __M68K_MCFCACHE_H
+#define __M68K_MCFCACHE_H
/****************************************************************************/
-
/*
* The different ColdFire families have different cache arrangments.
* Everything from a small instruction only cache, to configurable
* harvard style separate instruction and data caches.
*/
+/* ========================================================================= */
+/* NoMMU Coldfire */
+/* ========================================================================= */
+
#if defined(CONFIG_M5206) || defined(CONFIG_M5206e) || defined(CONFIG_M5272)
/*
* Simple version 2 core cache. These have instruction cache only,
.endm
#endif /* CONFIG_M520x */
+/* ========================================================================= */
+/* MMU Coldfire */
+/* ========================================================================= */
+
+#if defined(CONFIG_M5445X) || defined(CONFIG_M547X_8X)
+
+/*
+ * CACR Cache Control Register
+ */
+#define CF_CACR_DEC (0x80000000) /* Data Cache Enable */
+#define CF_CACR_DW (0x40000000) /* Data default Write-protect */
+#define CF_CACR_DESB (0x20000000) /* Data Enable Store Buffer */
+#define CF_CACR_DPI (0x10000000) /* Data Disable CPUSHL Invalidate */
+#define CF_CACR_DHLCK (0x08000000) /* 1/2 Data Cache Lock Mode */
+#define CF_CACR_DDCM_00 (0x00000000) /* Cacheable writethrough imprecise */
+#define CF_CACR_DDCM_01 (0x02000000) /* Cacheable copyback */
+#define CF_CACR_DDCM_10 (0x04000000) /* Noncacheable precise */
+#define CF_CACR_DDCM_11 (0x06000000) /* Noncacheable imprecise */
+#define CF_CACR_DCINVA (0x01000000) /* Data Cache Invalidate All */
+#define CF_CACR_DDSP (0x00800000) /* Data default supervisor-protect */
+#define CF_CACR_IVO (0x00100000) /* Invalidate only */
+#define CF_CACR_BEC (0x00080000) /* Branch Cache Enable */
+#define CF_CACR_BCINVA (0x00040000) /* Branch Cache Invalidate All */
+#define CF_CACR_IEC (0x00008000) /* Instruction Cache Enable */
+#define CF_CACR_SPA (0x00004000) /* Search by Physical Address */
+#define CF_CACR_DNFB (0x00002000) /* Default cache-inhibited fill buf */
+#define CF_CACR_IDPI (0x00001000) /* Instr Disable CPUSHL Invalidate */
+#define CF_CACR_IHLCK (0x00000800) /* 1/2 Instruction Cache Lock Mode */
+#define CF_CACR_IDCM (0x00000400) /* Noncacheable Instr default mode */
+#define CF_CACR_ICINVA (0x00000100) /* Instr Cache Invalidate All */
+#define CF_CACR_IDSP (0x00000080) /* Ins default supervisor-protect */
+#define CF_CACR_EUSP (0x00000020) /* Switch stacks in user mode */
+
+#ifdef CONFIG_M5445X
+/*
+ * M5445x Cache Configuration
+ * - cache line size is 16 bytes
+ * - cache is 4-way set associative
+ * - each cache has 256 sets (64k / 16bytes / 4way)
+ * - I-Cache size is 16KB
+ * - D-Cache size is 16KB
+ */
+#define ICACHE_SIZE 0x4000 /* instruction - 16k */
+#define DCACHE_SIZE 0x4000 /* data - 16k */
+
+#define CACHE_LINE_SIZE 0x0010 /* 16 bytes */
+#define CACHE_SETS 0x0100 /* 256 sets */
+#define CACHE_WAYS 0x0004 /* 4 way */
+
+#define CACHE_DISABLE_MODE (CF_CACR_DCINVA+ \
+ CF_CACR_BCINVA+ \
+ CF_CACR_ICINVA)
+
+#ifndef CONFIG_M5445X_DISABLE_CACHE
+#define CACHE_INITIAL_MODE (CF_CACR_DEC+ \
+ CF_CACR_BEC+ \
+ CF_CACR_IEC+ \
+ CF_CACR_DESB+ \
+ CF_CACR_EUSP)
+#else
+/* cache disabled for testing */
+#define CACHE_INITIAL_MODE (CF_CACR_EUSP)
+#endif /* CONFIG_M5445X_DISABLE_CACHE */
+
+#elif defined(CONFIG_M547X_8X)
+/*
+ * M547x/M548x Cache Configuration
+ * - cache line size is 16 bytes
+ * - cache is 4-way set associative
+ * - each cache has 512 sets (128k / 16bytes / 4way)
+ * - I-Cache size is 32KB
+ * - D-Cache size is 32KB
+ */
+#define ICACHE_SIZE 0x8000 /* instruction - 32k */
+#define DCACHE_SIZE 0x8000 /* data - 32k */
+
+#define CACHE_LINE_SIZE 0x0010 /* 16 bytes */
+#define CACHE_SETS 0x0200 /* 512 sets */
+#define CACHE_WAYS 0x0004 /* 4 way */
+
+/* in for the old cpushl caching code */
+#define _DCACHE_SET_MASK ((DCACHE_SIZE/64-1)<<CACHE_WAYS)
+#define _ICACHE_SET_MASK ((ICACHE_SIZE/64-1)<<CACHE_WAYS)
+#define LAST_DCACHE_ADDR _DCACHE_SET_MASK
+#define LAST_ICACHE_ADDR _ICACHE_SET_MASK
+
+#define CACHE_DISABLE_MODE (CF_CACR_DCINVA+ \
+ CF_CACR_BCINVA+ \
+ CF_CACR_ICINVA)
+
+#define CACHE_INITIAL_MODE (CF_CACR_DEC+ \
+ CF_CACR_BEC+ \
+ CF_CACR_IEC+ \
+ CF_CACR_DESB+ \
+ CF_CACR_EUSP)
+#endif /* CONFIG_M547X_8X */
+
+#ifndef __ASSEMBLY__
+
+extern unsigned long shadow_cacr;
+extern void cacr_set(unsigned long x);
+
+#endif /* !__ASSEMBLY__ */
+
+#endif /* CONFIG_M5445X || CONFIG_M547X_8X */
+
/****************************************************************************/
-#endif /* __M68KNOMMU_MCFCACHE_H */
+#endif /* __M68K_MCFCACHE_H */
--- /dev/null
+/*
+ * Definitions for Coldfire V4e MMU
+ */
+#include <asm/movs.h>
+
+#ifndef __M68K_MCFMMU_H
+#define __M68K_MCFMMU_H
+
+
+#define MMU_BASE 0xE1000000
+
+
+#define MMUCR (MMU_BASE+0x00)
+#define MMUCR_ASMN 1
+#define MMUCR_ASM (1<<MMUCR_ASMN)
+#define MMUCR_ENN 0
+#define MMUCR_EN (1<<MMUCR_ENN)
+
+#define MMUOR REG16(MMU_BASE+0x04+0x02)
+#define MMUOR_AAN 16
+#define MMUOR_AA (0xffff<<MMUOR_AAN)
+#define MMUOR_STLBN 8
+#define MMUOR_STLB (1<<MMUOR_STLBN)
+#define MMUOR_CAN 7
+#define MMUOR_CA (1<<MMUOR_CAN)
+#define MMUOR_CNLN 6
+#define MMUOR_CNL (1<<MMUOR_CNLN)
+#define MMUOR_CASN 5
+#define MMUOR_CAS (1<<MMUOR_CASN)
+#define MMUOR_ITLBN 4
+#define MMUOR_ITLB (1<<MMUOR_ITLBN)
+#define MMUOR_ADRN 3
+#define MMUOR_ADR (1<<MMUOR_ADRN)
+#define MMUOR_RWN 2
+#define MMUOR_RW (1<<MMUOR_RWN)
+#define MMUOR_ACCN 1
+#define MMUOR_ACC (1<<MMUOR_ACCN)
+#define MMUOR_UAAN 0
+#define MMUOR_UAA (1<<MMUOR_UAAN)
+
+#define MMUSR REG32(MMU_BASE+0x08)
+#define MMUSR_SPFN 5
+#define MMUSR_SPF (1<<MMUSR_SPFN)
+#define MMUSR_RFN 4
+#define MMUSR_RF (1<<MMUSR_RFN)
+#define MMUSR_WFN 3
+#define MMUSR_WF (1<<MMUSR_WFN)
+#define MMUSR_HITN 1
+#define MMUSR_HIT (1<<MMUSR_HITN)
+
+#define MMUAR REG32(MMU_BASE+0x10)
+#define MMUAR_VPN 1
+#define MMUAR_VP (0xfffffffe)
+#define MMUAR_SN 0
+#define MMUAR_S (1<<MMUAR_SN)
+
+#define MMUTR REG32(MMU_BASE+0x14)
+#define MMUTR_VAN 10
+#define MMUTR_VA (0xfffffc00)
+#define MMUTR_IDN 2
+#define MMUTR_ID (0xff<<MMUTR_IDN)
+#define MMUTR_SGN 1
+#define MMUTR_SG (1<<MMUTR_SGN)
+#define MMUTR_VN 0
+#define MMUTR_V (1<<MMUTR_VN)
+
+#define MMUDR REG32(MMU_BASE+0x18)
+#define MMUDR_PAN 10
+#define MMUDR_PA (0xfffffc00)
+#define MMUDR_SZN 8
+#define MMUDR_SZ_MASK (0x2<<MMUDR_SZN)
+#define MMUDR_SZ1M (0<<MMUDR_SZN)
+#define MMUDR_SZ4K (1<<MMUDR_SZN)
+#define MMUDR_SZ8K (2<<MMUDR_SZN)
+#define MMUDR_SZ16M (3<<MMUDR_SZN)
+#define MMUDR_CMN 6
+#define MMUDR_INC (2<<MMUDR_CMN)
+#define MMUDR_IC (0<<MMUDR_CMN)
+#define MMUDR_DWT (0<<MMUDR_CMN)
+#define MMUDR_DCB (1<<MMUDR_CMN)
+#define MMUDR_DNCP (2<<MMUDR_CMN)
+#define MMUDR_DNCIP (3<<MMUDR_CMN)
+#define MMUDR_SPN 5
+#define MMUDR_SP (1<<MMUDR_SPN)
+#define MMUDR_RN 4
+#define MMUDR_R (1<<MMUDR_RN)
+#define MMUDR_WN 3
+#define MMUDR_W (1<<MMUDR_WN)
+#define MMUDR_XN 2
+#define MMUDR_X (1<<MMUDR_XN)
+#define MMUDR_LKN 1
+#define MMUDR_LK (1<<MMUDR_LKN)
+
+
+#ifndef __ASSEMBLY__
+#define CF_PMEGS_NUM 256
+#define CF_INVALID_CONTEXT 255
+#define CF_PAGE_PGNUM_MASK (PAGE_MASK)
+
+extern int cf_tlb_miss(struct pt_regs *regs, int write, int dtlb,
+ int extension_word);
+#endif /* __ASSEMBLY__*/
+
+#endif /* !__M68K_MCFMMU_H */
projects / mcf548x / linux.git / commitdiff