--- /dev/null
+/*
+ * 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*const[]));
+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));
+
+\f
+/* ======================================================================
+ * 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 */
+
+
+\f
+/* ======================================================================
+ * 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 * const 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 */
+
+
+\f
+/* ======================================================================
+ * 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 */
+
+
+\f
+/* ======================================================================
+ * See if the hardware breakpoint is available.
+ * ====================================================================== */
+
+int bedbug603e_find_empty( void )
+{
+ /* -------------------------------------------------- */
+
+ if( (GET_IABR() && 0x00000002) == 0 )
+ return 1;
+
+ return 0;
+} /* bedbug603e_find_empty */
+
+
+\f
+/* ======================================================================
+ * 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 */
+
+
+\f
+/* ======================================================================
+ * 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
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