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, 238 insertions, 0 deletions

diff --git a/arch/powerpc/cpu/mpc8260/bedbug_603e.c b/arch/powerpc/cpu/mpc8260/bedbug_603e.c
new file mode 100644
index 0000000..c969ff6
--- /dev/null
+++ b/arch/powerpc/cpu/mpc8260/bedbug_603e.c
@@ -0,0 +1,238 @@
+/*
+ * Bedbug Functions specific to the MPC603e core
+ */
+
+#include <common.h>
+#include <command.h>
+#include <linux/ctype.h>
+#include <bedbug/type.h>
+#include <bedbug/bedbug.h>
+#include <bedbug/regs.h>
+#include <bedbug/ppc.h>
+
+#if defined(CONFIG_CMD_BEDBUG) \
+	&& (defined(CONFIG_MPC824X) || defined(CONFIG_MPC8260))
+
+#define MAX_BREAK_POINTS 1
+
+extern CPU_DEBUG_CTX bug_ctx;
+
+void bedbug603e_init __P((void));
+void bedbug603e_do_break __P((cmd_tbl_t*,int,int,char*[]));
+void bedbug603e_break_isr __P((struct pt_regs*));
+int  bedbug603e_find_empty __P((void));
+int  bedbug603e_set __P((int,unsigned long));
+int  bedbug603e_clear __P((int));
+
+
+/* ======================================================================
+ * Initialize the global bug_ctx structure for the processor.  Clear all
+ * of the breakpoints.
+ * ====================================================================== */
+
+void bedbug603e_init( void )
+{
+  int	i;
+  /* -------------------------------------------------- */
+
+  bug_ctx.hw_debug_enabled = 0;
+  bug_ctx.stopped = 0;
+  bug_ctx.current_bp = 0;
+  bug_ctx.regs = NULL;
+
+  bug_ctx.do_break   = bedbug603e_do_break;
+  bug_ctx.break_isr  = bedbug603e_break_isr;
+  bug_ctx.find_empty = bedbug603e_find_empty;
+  bug_ctx.set        = bedbug603e_set;
+  bug_ctx.clear      = bedbug603e_clear;
+
+  for( i = 1; i <= MAX_BREAK_POINTS; ++i )
+    (*bug_ctx.clear)( i );
+
+  puts ("BEDBUG:ready\n");
+  return;
+} /* bedbug_init_breakpoints */
+
+
+
+/* ======================================================================
+ * Set/clear/show the hardware breakpoint for the 603e.  The "off"
+ * string will disable a specific breakpoint.  The "show" string will
+ * display the current breakpoints.  Otherwise an address will set a
+ * breakpoint at that address.  Setting a breakpoint uses the CPU-specific
+ * set routine which will assign a breakpoint number.
+ * ====================================================================== */
+
+void bedbug603e_do_break (cmd_tbl_t *cmdtp, int flag, int argc,
+			 char *argv[])
+{
+  long		addr;           /* Address to break at  */
+  int		which_bp;       /* Breakpoint number    */
+  /* -------------------------------------------------- */
+
+  if (argc < 2)
+  {
+    cmd_usage(cmdtp);
+    return;
+  }
+
+  /* Turn off a breakpoint */
+
+  if( strcmp( argv[ 1 ], "off" ) == 0 )
+  {
+    if( bug_ctx.hw_debug_enabled == 0 )
+    {
+      puts ( "No breakpoints enabled\n" );
+      return;
+    }
+
+    which_bp = simple_strtoul( argv[ 2 ], NULL, 10 );
+
+    if( bug_ctx.clear )
+      (*bug_ctx.clear)( which_bp );
+
+    printf( "Breakpoint %d removed\n", which_bp );
+    return;
+  }
+
+  /* Show a list of breakpoints */
+
+  if( strcmp( argv[ 1 ], "show" ) == 0 )
+  {
+    for( which_bp = 1; which_bp <= MAX_BREAK_POINTS; ++which_bp )
+    {
+
+      addr = GET_IABR();
+
+      printf( "Breakpoint [%d]: ", which_bp );
+      if( (addr & 0x00000002) == 0 )
+	puts ( "NOT SET\n" );
+      else
+	disppc( (unsigned char *)(addr & 0xFFFFFFFC), 0, 1, bedbug_puts, F_RADHEX );
+    }
+    return;
+  }
+
+  /* Set a breakpoint at the address */
+
+  if(!(( isdigit( argv[ 1 ][ 0 ] )) ||
+	(( argv[ 1 ][ 0 ] >= 'a' ) && ( argv[ 1 ][ 0 ] <= 'f' )) ||
+	(( argv[ 1 ][ 0 ] >= 'A' ) && ( argv[ 1 ][ 0 ] <= 'F' ))))
+  {
+    cmd_usage(cmdtp);
+    return;
+  }
+
+  addr = simple_strtoul( argv[ 1 ], NULL, 16 );
+
+  if(( bug_ctx.set ) && ( which_bp = (*bug_ctx.set)( 0, addr )) > 0 )
+  {
+    printf( "Breakpoint [%d]: ", which_bp );
+    disppc( (unsigned char *)addr, 0, 1, bedbug_puts, F_RADHEX );
+  }
+
+  return;
+} /* bedbug603e_do_break */
+
+
+
+/* ======================================================================
+ * Handle a breakpoint.  Enter a mini main loop.  Stay in the loop until
+ * the stopped flag in the debug context is cleared.
+ * ====================================================================== */
+
+void bedbug603e_break_isr( struct pt_regs *regs )
+{
+  unsigned long	addr;           /* Address stopped at   */
+  /* -------------------------------------------------- */
+
+  bug_ctx.current_bp = 1;
+  addr = GET_IABR() & 0xFFFFFFFC;
+
+  bedbug_main_loop( addr, regs );
+  return;
+} /* bedbug603e_break_isr */
+
+
+
+/* ======================================================================
+ * See if the hardware breakpoint is available.
+ * ====================================================================== */
+
+int bedbug603e_find_empty( void )
+{
+  /* -------------------------------------------------- */
+
+  if( (GET_IABR() && 0x00000002) == 0 )
+    return 1;
+
+  return 0;
+} /* bedbug603e_find_empty */
+
+
+
+/* ======================================================================
+ * Set a breakpoint.  If 'which_bp' is zero then find an unused breakpoint
+ * number, otherwise reassign the given breakpoint.  If hardware debugging
+ * is not enabled, then turn it on via the MSR and DBCR0.  Set the break
+ * address in the IABR register.
+ * ====================================================================== */
+
+int bedbug603e_set( int which_bp, unsigned long addr )
+{
+  /* -------------------------------------------------- */
+
+  if(( addr & 0x00000003 ) != 0 )
+  {
+    puts ( "Breakpoints must be on a 32 bit boundary\n" );
+    return 0;
+  }
+
+  /* Only look if which_bp == 0, else use which_bp */
+  if(( bug_ctx.find_empty ) && ( !which_bp ) &&
+     ( which_bp = (*bug_ctx.find_empty)()) == 0 )
+  {
+    puts ( "All breakpoints in use\n" );
+    return 0;
+  }
+
+  if( which_bp < 1 || which_bp > MAX_BREAK_POINTS )
+  {
+    printf( "Invalid break point # %d\n", which_bp );
+    return 0;
+  }
+
+  if( ! bug_ctx.hw_debug_enabled )
+  {
+    bug_ctx.hw_debug_enabled = 1;
+  }
+
+  SET_IABR( addr | 0x00000002 );
+
+  return which_bp;
+} /* bedbug603e_set */
+
+
+
+/* ======================================================================
+ * Disable a specific breakoint by setting the IABR register to zero.
+ * ====================================================================== */
+
+int bedbug603e_clear( int which_bp )
+{
+  /* -------------------------------------------------- */
+
+  if( which_bp < 1 || which_bp > MAX_BREAK_POINTS )
+  {
+    printf( "Invalid break point # (%d)\n", which_bp );
+    return -1;
+  }
+
+  SET_IABR( 0 );
+
+  return 0;
+} /* bedbug603e_clear */
+
+
+/* ====================================================================== */
+#endif