Move arch/ppc to arch/powerpc

As discussed on the list, move "arch/ppc" to "arch/powerpc" to
better match the Linux directory structure.

Please note that this patch also changes the "ppc" target in
MAKEALL to "powerpc" to match this new infrastructure. But "ppc"
is kept as an alias for now, to not break compatibility with
scripts using this name.

Signed-off-by: Stefan Roese <sr@denx.de>
Acked-by: Wolfgang Denk <wd@denx.de>
Acked-by: Detlev Zundel <dzu@denx.de>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
Cc: Peter Tyser <ptyser@xes-inc.com>
Cc: Anatolij Gustschin <agust@denx.de>

1 files changed, 212 insertions, 0 deletions

diff --git a/arch/powerpc/cpu/mpc512x/traps.c b/arch/powerpc/cpu/mpc512x/traps.c
new file mode 100644
index 0000000..786f4a5
--- /dev/null
+++ b/arch/powerpc/cpu/mpc512x/traps.c
@@ -0,0 +1,212 @@
+/*
+ * (C) Copyright 2000 - 2007
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * Copyright (C) 1995-1996  Gary Thomas (gdt@linuxppc.org)
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ * Derived from the MPC83xx code.
+ */
+
+/*
+ * This file handles the architecture-dependent parts of hardware
+ * exceptions
+ */
+
+#include <common.h>
+#include <kgdb.h>
+#include <asm/processor.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+extern unsigned long search_exception_table(unsigned long);
+
+/*
+ * End of addressable memory.  This may be less than the actual
+ * amount of memory on the system if we're unable to keep all
+ * the memory mapped in.
+ */
+extern ulong get_effective_memsize(void);
+#define END_OF_MEM (gd->bd->bi_memstart + get_effective_memsize())
+
+/*
+ * Trap & Exception support
+ */
+
+void
+print_backtrace (unsigned long *sp)
+{
+	int cnt = 0;
+	unsigned long i;
+
+	puts ("Call backtrace: ");
+	while (sp) {
+		if ((uint)sp > END_OF_MEM)
+			break;
+
+		i = sp[1];
+		if (cnt++ % 7 == 0)
+			putc ('\n');
+		printf ("%08lX ", i);
+		if (cnt > 32) break;
+		sp = (unsigned long *) *sp;
+	}
+	putc ('\n');
+}
+
+void show_regs (struct pt_regs * regs)
+{
+	int i;
+
+	printf ("NIP: %08lX XER: %08lX LR: %08lX REGS: %p TRAP: %04lx DAR: %08lX\n",
+	       regs->nip, regs->xer, regs->link, regs, regs->trap, regs->dar);
+	printf ("MSR: %08lx EE: %01x PR: %01x FP: %01x ME: %01x IR/DR: %01x%01x\n",
+	       regs->msr, regs->msr & MSR_EE ? 1 : 0, regs->msr & MSR_PR ? 1 : 0,
+	       regs->msr & MSR_FP ? 1 : 0,regs->msr & MSR_ME ? 1 : 0,
+	       regs->msr & MSR_IR ? 1 : 0,
+	       regs->msr & MSR_DR ? 1 : 0);
+
+	putc ('\n');
+	for (i = 0;  i < 32;  i++) {
+		if ((i % 8) == 0) {
+			printf ("GPR%02d: ", i);
+		}
+
+		printf ("%08lX ", regs->gpr[i]);
+		if ((i % 8) == 7) {
+			putc ('\n');
+		}
+	}
+}
+
+
+void
+_exception (int signr, struct pt_regs *regs)
+{
+	show_regs (regs);
+	print_backtrace ((unsigned long *)regs->gpr[1]);
+	panic ("Exception at pc %lx signal %d", regs->nip,signr);
+}
+
+
+void
+MachineCheckException (struct pt_regs *regs)
+{
+	unsigned long fixup;
+
+	if ((fixup = search_exception_table (regs->nip)) != 0) {
+		regs->nip = fixup;
+		return;
+	}
+
+#ifdef CONFIG_CMD_KGDB
+	if (debugger_exception_handler && (*debugger_exception_handler)(regs))
+		return;
+#endif
+
+	puts ("Machine check.\nCaused by (from msr): ");
+	printf ("regs %p ",regs);
+	switch (regs->msr & 0x00FF0000) {
+	case (0x80000000 >> 10):
+		puts ("Instruction cache parity signal\n");
+		break;
+	case (0x80000000 >> 11):
+		puts ("Data cache parity signal\n");
+		break;
+	case (0x80000000 >> 12):
+		puts ("Machine check signal\n");
+		break;
+	case (0x80000000 >> 13):
+		puts ("Transfer error ack signal\n");
+		break;
+	case (0x80000000 >> 14):
+		puts ("Data parity signal\n");
+		break;
+	case (0x80000000 >> 15):
+		puts ("Address parity signal\n");
+		break;
+	default:
+		puts ("Unknown values in msr\n");
+	}
+	show_regs (regs);
+	print_backtrace ((unsigned long *)regs->gpr[1]);
+
+	panic ("machine check");
+}
+
+void
+AlignmentException (struct pt_regs *regs)
+{
+#ifdef CONFIG_CMD_KGDB
+	if (debugger_exception_handler && (*debugger_exception_handler)(regs))
+		return;
+#endif
+	show_regs (regs);
+	print_backtrace ((unsigned long *)regs->gpr[1]);
+	panic ("Alignment Exception");
+}
+
+void
+ProgramCheckException (struct pt_regs *regs)
+{
+#ifdef CONFIG_CMD_KGDB
+	if (debugger_exception_handler && (*debugger_exception_handler)(regs))
+		return;
+#endif
+	show_regs (regs);
+	print_backtrace ((unsigned long *)regs->gpr[1]);
+	panic ("Program Check Exception");
+}
+
+void
+SoftEmuException (struct pt_regs *regs)
+{
+#ifdef CONFIG_CMD_KGDB
+	if (debugger_exception_handler && (*debugger_exception_handler)(regs))
+		return;
+#endif
+	show_regs (regs);
+	print_backtrace ((unsigned long *)regs->gpr[1]);
+	panic ("Software Emulation Exception");
+}
+
+
+void
+UnknownException (struct pt_regs *regs)
+{
+#ifdef CONFIG_CMD_KGDB
+	if (debugger_exception_handler && (*debugger_exception_handler)(regs))
+		return;
+#endif
+	printf ("Bad trap at PC: %lx, SR: %lx, vector=%lx\n",
+	       regs->nip, regs->msr, regs->trap);
+	_exception (0, regs);
+}
+
+#ifdef CONFIG_CMD_BEDBUG
+extern void do_bedbug_breakpoint (struct pt_regs *);
+#endif
+
+void
+DebugException (struct pt_regs *regs)
+{
+	printf ("Debugger trap at @ %lx\n", regs->nip );
+	show_regs (regs);
+#ifdef CONFIG_CMD_BEDBUG
+	do_bedbug_breakpoint (regs);
+#endif
+}