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-rw-r--r--cpu/ppc4xx/bedbug_405.c308
1 files changed, 0 insertions, 308 deletions
diff --git a/cpu/ppc4xx/bedbug_405.c b/cpu/ppc4xx/bedbug_405.c
deleted file mode 100644
index ef11cb6..0000000
--- a/cpu/ppc4xx/bedbug_405.c
+++ /dev/null
@@ -1,308 +0,0 @@
-/*
- * Bedbug Functions specific to the PPC405 chip
- */
-
-#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_4xx)
-
-#define MAX_BREAK_POINTS 4
-
-extern CPU_DEBUG_CTX bug_ctx;
-
-void bedbug405_init __P ((void));
-void bedbug405_do_break __P ((cmd_tbl_t *, int, int, char *[]));
-void bedbug405_break_isr __P ((struct pt_regs *));
-int bedbug405_find_empty __P ((void));
-int bedbug405_set __P ((int, unsigned long));
-int bedbug405_clear __P ((int));
-
-
-/* ======================================================================
- * Initialize the global bug_ctx structure for the AMCC PPC405. Clear all
- * of the breakpoints.
- * ====================================================================== */
-
-void bedbug405_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 = bedbug405_do_break;
- bug_ctx.break_isr = bedbug405_break_isr;
- bug_ctx.find_empty = bedbug405_find_empty;
- bug_ctx.set = bedbug405_set;
- bug_ctx.clear = bedbug405_clear;
-
- for (i = 1; i <= MAX_BREAK_POINTS; ++i)
- (*bug_ctx.clear) (i);
-
- puts ("BEDBUG:ready\n");
- return;
-} /* bedbug_init_breakpoints */
-
-
-
-/* ======================================================================
- * Set/clear/show one of the hardware breakpoints for the 405. 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 bedbug405_do_break (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
-{
- long addr = 0; /* 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) {
- printf ("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) {
-
- switch (which_bp) {
- case 1:
- addr = GET_IAC1 ();
- break;
- case 2:
- addr = GET_IAC2 ();
- break;
- case 3:
- addr = GET_IAC3 ();
- break;
- case 4:
- addr = GET_IAC4 ();
- break;
- }
-
- printf ("Breakpoint [%d]: ", which_bp);
- if (addr == 0)
- printf ("NOT SET\n");
- else
- disppc ((unsigned char *) addr, 0, 1, bedbug_puts,
- F_RADHEX);
- }
- return;
- }
-
- /* Set a breakpoint at the address */
-
- if (!isdigit (argv[1][0])) {
- cmd_usage(cmdtp);
- return;
- }
-
- addr = simple_strtoul (argv[1], NULL, 16) & 0xfffffffc;
-
- 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;
-} /* bedbug405_do_break */
-
-
-
-/* ======================================================================
- * Handle a breakpoint. First determine which breakpoint was hit by
- * looking at the DeBug Status Register (DBSR), clear the breakpoint
- * and enter a mini main loop. Stay in the loop until the stopped flag
- * in the debug context is cleared.
- * ====================================================================== */
-
-void bedbug405_break_isr (struct pt_regs *regs)
-{
- unsigned long dbsr_val; /* Value of the DBSR */
- unsigned long addr = 0; /* Address stopped at */
-
- /* -------------------------------------------------- */
-
- dbsr_val = GET_DBSR ();
-
- if (dbsr_val & DBSR_IA1) {
- bug_ctx.current_bp = 1;
- addr = GET_IAC1 ();
- SET_DBSR (DBSR_IA1); /* Write a 1 to clear */
- } else if (dbsr_val & DBSR_IA2) {
- bug_ctx.current_bp = 2;
- addr = GET_IAC2 ();
- SET_DBSR (DBSR_IA2); /* Write a 1 to clear */
- } else if (dbsr_val & DBSR_IA3) {
- bug_ctx.current_bp = 3;
- addr = GET_IAC3 ();
- SET_DBSR (DBSR_IA3); /* Write a 1 to clear */
- } else if (dbsr_val & DBSR_IA4) {
- bug_ctx.current_bp = 4;
- addr = GET_IAC4 ();
- SET_DBSR (DBSR_IA4); /* Write a 1 to clear */
- }
-
- bedbug_main_loop (addr, regs);
- return;
-} /* bedbug405_break_isr */
-
-
-
-/* ======================================================================
- * Look through all of the hardware breakpoints available to see if one
- * is unused.
- * ====================================================================== */
-
-int bedbug405_find_empty (void)
-{
- /* -------------------------------------------------- */
-
- if (GET_IAC1 () == 0)
- return 1;
-
- if (GET_IAC2 () == 0)
- return 2;
-
- if (GET_IAC3 () == 0)
- return 3;
-
- if (GET_IAC4 () == 0)
- return 4;
-
- return 0;
-} /* bedbug405_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 appropriate IACx register and enable proper address
- * beakpoint in DBCR0.
- * ====================================================================== */
-
-int bedbug405_set (int which_bp, unsigned long addr)
-{
- /* -------------------------------------------------- */
-
- /* Only look if which_bp == 0, else use which_bp */
- if ((bug_ctx.find_empty) && (!which_bp) &&
- (which_bp = (*bug_ctx.find_empty) ()) == 0) {
- printf ("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) {
- SET_MSR (GET_MSR () | 0x200); /* set MSR[ DE ] */
- SET_DBCR0 (GET_DBCR0 () | DBCR0_IDM);
- bug_ctx.hw_debug_enabled = 1;
- }
-
- switch (which_bp) {
- case 1:
- SET_IAC1 (addr);
- SET_DBCR0 (GET_DBCR0 () | DBCR0_IA1);
- break;
-
- case 2:
- SET_IAC2 (addr);
- SET_DBCR0 (GET_DBCR0 () | DBCR0_IA2);
- break;
-
- case 3:
- SET_IAC3 (addr);
- SET_DBCR0 (GET_DBCR0 () | DBCR0_IA3);
- break;
-
- case 4:
- SET_IAC4 (addr);
- SET_DBCR0 (GET_DBCR0 () | DBCR0_IA4);
- break;
- }
-
- return which_bp;
-} /* bedbug405_set */
-
-
-
-/* ======================================================================
- * Disable a specific breakoint by setting the appropriate IACx register
- * to zero and claring the instruction address breakpoint in DBCR0.
- * ====================================================================== */
-
-int bedbug405_clear (int which_bp)
-{
- /* -------------------------------------------------- */
-
- if (which_bp < 1 || which_bp > MAX_BREAK_POINTS) {
- printf ("Invalid break point # (%d)\n", which_bp);
- return -1;
- }
-
- switch (which_bp) {
- case 1:
- SET_IAC1 (0);
- SET_DBCR0 (GET_DBCR0 () & ~DBCR0_IA1);
- break;
-
- case 2:
- SET_IAC2 (0);
- SET_DBCR0 (GET_DBCR0 () & ~DBCR0_IA2);
- break;
-
- case 3:
- SET_IAC3 (0);
- SET_DBCR0 (GET_DBCR0 () & ~DBCR0_IA3);
- break;
-
- case 4:
- SET_IAC4 (0);
- SET_DBCR0 (GET_DBCR0 () & ~DBCR0_IA4);
- break;
- }
-
- return 0;
-} /* bedbug405_clear */
-
-
-/* ====================================================================== */
-#endif