PPC32: Move xmon declarations to their own header file.

arch/ppc/kernel/ppc_ksyms.c

@@ -46,6 +46,7 @@
 #include <asm/cputable.h>
 #include <asm/btext.h>
 #include <asm/div64.h>
+#include <asm/xmon.h>
 
 #ifdef  CONFIG_8xx
 #include <asm/commproc.h>
@@ -306,7 +307,6 @@ EXPORT_SYMBOL(tb_ticks_per_jiffy);
 EXPORT_SYMBOL(get_wchan);
 EXPORT_SYMBOL(console_drivers);
 #ifdef CONFIG_XMON
-extern void xmon_printf(char *fmt, ...);
 EXPORT_SYMBOL(xmon);
 EXPORT_SYMBOL(xmon_printf);
 #endif

arch/ppc/kernel/setup.c

@@ -34,6 +34,7 @@
 #include <asm/system.h>
 #include <asm/pmac_feature.h>
 #include <asm/sections.h>
+#include <asm/xmon.h>
 
 #if defined CONFIG_KGDB
 #include <asm/kgdb.h>
@@ -46,9 +47,6 @@ extern void identify_cpu(unsigned long offset, unsigned long cpu);
 extern void do_cpu_ftr_fixups(unsigned long offset);
 extern void reloc_got2(unsigned long offset);
 
-#ifdef CONFIG_XMON
-extern void xmon_map_scc(void);
-#endif
 
 #ifdef CONFIG_KGDB
 extern void kgdb_map_scc(void);

arch/ppc/kernel/smp.c

@@ -35,6 +35,7 @@
 #include <asm/time.h>
 #include <asm/thread_info.h>
 #include <asm/tlbflush.h>
+#include <asm/xmon.h>
 
 int smp_threads_ready;
 volatile int smp_commenced;

arch/ppc/kernel/traps.c

@@ -36,6 +36,7 @@
 #include <asm/system.h>
 #include <asm/io.h>
 #include <asm/processor.h>
+#include <asm/xmon.h>
 #ifdef CONFIG_PMAC_BACKLIGHT
 #include <asm/backlight.h>
 #endif
@@ -43,15 +44,6 @@
 extern int fix_alignment(struct pt_regs *);
 extern void bad_page_fault(struct pt_regs *, unsigned long, int sig);
 
-#ifdef CONFIG_XMON
-extern void xmon(struct pt_regs *regs);
-extern int xmon_bpt(struct pt_regs *regs);
-extern int xmon_sstep(struct pt_regs *regs);
-extern int xmon_iabr_match(struct pt_regs *regs);
-extern int xmon_dabr_match(struct pt_regs *regs);
-extern void (*xmon_fault_handler)(struct pt_regs *regs);
-#endif
-
 #ifdef CONFIG_XMON
 void (*debugger)(struct pt_regs *regs) = xmon;
 int (*debugger_bpt)(struct pt_regs *regs) = xmon_bpt;

arch/ppc/platforms/chrp_setup.c

@@ -36,6 +36,7 @@
 #include <linux/console.h>
 #include <linux/seq_file.h>
 #include <linux/root_dev.h>
+#include <linux/initrd.h>
 
 #include <asm/processor.h>
 #include <asm/io.h>
@@ -52,6 +53,7 @@
 #include <asm/btext.h>
 #include <asm/i8259.h>
 #include <asm/open_pic.h>
+#include <asm/xmon.h>
 
 unsigned long chrp_get_rtc_time(void);
 int chrp_set_rtc_time(unsigned long nowtime);
@@ -67,6 +69,13 @@ void btext_progress(char *, unsigned short);
 extern unsigned long pmac_find_end_of_memory(void);
 extern int of_show_percpuinfo(struct seq_file *, int);
 
+/*
+ * XXX this should be in xmon.h, but putting it there means xmon.h
+ * has to include <linux/interrupt.h> (to get irqreturn_t), which
+ * causes all sorts of problems.  -- paulus
+ */ 
+extern irqreturn_t xmon_irq(int, void *, struct pt_regs *);
+
 extern dev_t boot_dev;
 
 extern PTE *Hash, *Hash_end;

arch/ppc/platforms/pmac_pic.c

@@ -30,9 +30,17 @@
 #include <asm/pci-bridge.h>
 #include <asm/time.h>
 #include <asm/open_pic.h>
+#include <asm/xmon.h>
 
 #include "pmac_pic.h"
 
+/*
+ * XXX this should be in xmon.h, but putting it there means xmon.h
+ * has to include <linux/interrupt.h> (to get irqreturn_t), which
+ * causes all sorts of problems.  -- paulus
+ */ 
+extern irqreturn_t xmon_irq(int, void *, struct pt_regs *);
+
 struct pmac_irq_hw {
         unsigned int    event;
         unsigned int    enable;
@@ -177,7 +185,7 @@ struct hw_interrupt_type gatwick_pic = {
 	NULL
 };
 
-static void gatwick_action(int cpl, void *dev_id, struct pt_regs *regs)
+static irqreturn_t gatwick_action(int cpl, void *dev_id, struct pt_regs *regs)
 {
 	int irq, bits;
 	
@@ -190,16 +198,11 @@ static void gatwick_action(int cpl, void *dev_id, struct pt_regs *regs)
 		if (bits == 0)
 			continue;
 		irq += __ilog2(bits);
-		break;
+		ppc_irq_dispatch_handler(regs, irq);
+		return IRQ_HANDLED;
 	}
-	/* The previous version of this code allowed for this case, we
-	 * don't.  Put this here to check for it.
-	 * -- Cort
-	 */
-	if ( irq_desc[irq].handler != &gatwick_pic )
-		printk("gatwick irq not from gatwick pic\n");
-	else
-		ppc_irq_dispatch_handler( regs, irq );
+	printk("gatwick irq not from gatwick pic\n");
+	return IRQ_NONE;
 }
 
 int
@@ -393,7 +396,7 @@ pmac_pic_init(void)
 					nmi_irq = pswitch->intrs[0].line;
 					openpic_init_nmi_irq(nmi_irq);
 					request_irq(nmi_irq, xmon_irq, 0,
-							"NMI - XMON", 0);
+						    "NMI - XMON", 0);
 				}
 			}
 #endif	/* CONFIG_XMON */

arch/ppc/syslib/m8xx_setup.c

@@ -44,6 +44,7 @@
 #include <asm/machdep.h>
 #include <asm/bootinfo.h>
 #include <asm/time.h>
+#include <asm/xmon.h>
 
 #include "ppc8xx_pic.h"
 

arch/ppc/xmon/nonstdio.h

@@ -15,7 +15,6 @@ extern FILE *xmon_stdin, *xmon_stdout;
 #define fflush(f)	do {} while (0)
 #define fclose(f)	do {} while (0)
 extern char *fgets(char *, int, void *);
-extern void xmon_printf(const char *, ...);
 extern void xmon_fprintf(void *, const char *, ...);
 extern void xmon_sprintf(char *, const char *, ...);
 extern void xmon_puts(char*);

arch/ppc/xmon/start.c

@@ -26,7 +26,6 @@
 
 static volatile unsigned char *sccc, *sccd;
 unsigned int TXRDY, RXRDY, DLAB;
-extern void xmon_printf(const char *fmt, ...);
 static int xmon_expect(const char *str, unsigned int timeout);
 
 static int use_serial;

arch/ppc/xmon/xmon.c

@@ -7,12 +7,14 @@
 #include <linux/errno.h>
 #include <linux/sched.h>
 #include <linux/smp.h>
+#include <linux/interrupt.h>
 #include <asm/ptrace.h>
 #include <asm/string.h>
 #include <asm/prom.h>
 #include <asm/bitops.h>
 #include <asm/bootx.h>
 #include <asm/machdep.h>
+#include <asm/xmon.h>
 #ifdef CONFIG_PMAC_BACKLIGHT
 #include <asm/backlight.h>
 #endif
@@ -103,7 +105,12 @@ static void cpu_cmd(void);
 #endif /* CONFIG_SMP */
 static int pretty_print_addr(unsigned long addr);
 static void csum(void);
+#ifdef CONFIG_BOOTX_TEXT
+static void vidcmds(void);
+#endif
 static void bootcmds(void);
+static void proccall(void);
+static void printtime(void);
 
 extern int print_insn_big_powerpc(FILE *, unsigned long, unsigned);
 extern void printf(const char *fmt, ...);
@@ -116,6 +123,9 @@ extern void xmon_leave(void);
 extern char* xmon_find_symbol(unsigned long addr, unsigned long* saddr);
 extern unsigned long xmon_symbol_to_addr(char* symbol);
 
+static unsigned start_tb[NR_CPUS][2];
+static unsigned stop_tb[NR_CPUS][2];
+
 #define GETWORD(v)	(((v)[0] << 24) + ((v)[1] << 16) + ((v)[2] << 8) + (v)[3])
 
 #define isxdigit(c)	(('0' <= (c) && (c) <= '9') \
@@ -165,6 +175,20 @@ extern inline void __delay(unsigned int loops)
 				     "r" (loops) : "ctr");
 }
 
+static void get_tb(unsigned *p)
+{
+	unsigned hi, lo, hiagain;
+
+	if ((get_pvr() >> 16) == 1)
+		return;
+
+	do {
+		asm volatile("mftbu %0; mftb %1; mftbu %2"
+			     : "=r" (hi), "=r" (lo), "=r" (hiagain));
+	} while (hi != hiagain);
+	p[0] = hi;
+	p[1] = lo;
+}
 
 void
 xmon(struct pt_regs *excp)
@@ -172,6 +196,7 @@ xmon(struct pt_regs *excp)
 	struct pt_regs regs;
 	int msr, cmd;
 
+	get_tb(stop_tb[smp_processor_id()]);
 	if (excp == NULL) {
 		asm volatile ("stw	0,0(%0)\n\
 			lwz	0,0(1)\n\
@@ -234,17 +259,18 @@ xmon(struct pt_regs *excp)
 	clear_bit(smp_processor_id(), &cpus_in_xmon);
 #endif /* CONFIG_SMP */
 	set_msr(msr);		/* restore interrupt enable */
+	get_tb(start_tb[smp_processor_id()]);
 }
 
-void
+irqreturn_t
 xmon_irq(int irq, void *d, struct pt_regs *regs)
 {
 	unsigned long flags;
-	local_save_flags(flags);
-	local_irq_disable();
+	local_irq_save(flags);
 	printf("Keyboard interrupt\n");
 	xmon(regs);
 	local_irq_restore(flags);
+	return IRQ_HANDLED;
 }
 
 int
@@ -481,13 +507,39 @@ cmds(struct pt_regs *excp)
 			cpu_cmd();
 			break;
 #endif /* CONFIG_SMP */
+#ifdef CONFIG_BOOTX_TEXT
+		case 'v':
+			vidcmds();
+			break;
+#endif
 		case 'z':
 			bootcmds();
 			break;
+		case 'p':
+			proccall();
+			break;
+		case 'T':
+			printtime();
+			break;
 		}
 	}
 }
 
+extern unsigned tb_to_us;
+
+#define mulhwu(x,y) \
+({unsigned z; asm ("mulhwu %0,%1,%2" : "=r" (z) : "r" (x), "r" (y)); z;})
+
+static void printtime(void)
+{
+	unsigned int delta;
+
+	delta = stop_tb[smp_processor_id()][1]
+		- start_tb[smp_processor_id()][1];
+	delta = mulhwu(tb_to_us, delta);
+	printf("%u.%06u seconds\n", delta / 1000000, delta % 1000000);
+}
+
 static void bootcmds(void)
 {
 	int cmd;
@@ -551,6 +603,44 @@ static void cpu_cmd(void)
 }
 #endif /* CONFIG_SMP */
 
+#ifdef CONFIG_BOOTX_TEXT
+extern boot_infos_t disp_bi;
+
+static void vidcmds(void)
+{
+	int c = inchar();
+	unsigned int val, w;
+	extern int boot_text_mapped;
+
+	if (!boot_text_mapped)
+		return;
+	if (c != '\n' && scanhex(&val)) {
+		switch (c) {
+		case 'd':
+			w = disp_bi.dispDeviceRowBytes
+				/ (disp_bi.dispDeviceDepth >> 3);
+			disp_bi.dispDeviceDepth = val;
+			disp_bi.dispDeviceRowBytes = w * (val >> 3);
+			return;
+		case 'p':
+			disp_bi.dispDeviceRowBytes = val;
+			return;
+		case 'w':
+			disp_bi.dispDeviceRect[2] = val;
+			return;
+		case 'h':
+			disp_bi.dispDeviceRect[3] = val;
+			return;
+		}
+	}
+	printf("W = %d (0x%x) H = %d (0x%x) D = %d (0x%x) P = %d (0x%x)\n",
+	       disp_bi.dispDeviceRect[2], disp_bi.dispDeviceRect[2],
+	       disp_bi.dispDeviceRect[3], disp_bi.dispDeviceRect[3],
+	       disp_bi.dispDeviceDepth, disp_bi.dispDeviceDepth,
+	       disp_bi.dispDeviceRowBytes, disp_bi.dispDeviceRowBytes);
+}
+#endif /* CONFIG_BOOTX_TEXT */
+
 static unsigned short fcstab[256] = {
 	0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf,
 	0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7,
@@ -927,34 +1017,6 @@ super_regs()
 	scannl();
 }
 
-#if 0
-static void
-openforth()
-{
-    int c;
-    char *p;
-    char cmd[1024];
-    int args[5];
-    extern int (*prom_entry)(int *);
-
-    p = cmd;
-    c = skipbl();
-    while (c != '\n') {
-	*p++ = c;
-	c = inchar();
-    }
-    *p = 0;
-    args[0] = (int) "interpret";
-    args[1] = 1;
-    args[2] = 1;
-    args[3] = (int) cmd;
-    (*prom_entry)(args);
-    printf("\n");
-    if (args[4] != 0)
-	printf("error %x\n", args[4]);
-}
-#endif
-
 #ifndef CONFIG_PPC_STD_MMU
 static void
 dump_hash_table()
@@ -1176,11 +1238,13 @@ mwrite(unsigned adrs, void *buf, int size)
 }
 
 static int fault_type;
+static int fault_except;
 static char *fault_chars[] = { "--", "**", "##" };
 
 static void
 handle_fault(struct pt_regs *regs)
 {
+	fault_except = TRAP(regs);
 	fault_type = TRAP(regs) == 0x200? 0: TRAP(regs) == 0x300? 1: 2;
 	longjmp(bus_error_jmp, 1);
 }
@@ -1578,6 +1642,41 @@ memzcan()
 		printf("%.8x\n", a - mskip);
 }
 
+void proccall(void)
+{
+	unsigned int args[8];
+	unsigned int ret;
+	int i;
+	typedef unsigned int (*callfunc_t)(unsigned int, unsigned int,
+			unsigned int, unsigned int, unsigned int,
+			unsigned int, unsigned int, unsigned int);
+	callfunc_t func;
+
+	scanhex(&adrs);
+	if (termch != '\n')
+		termch = 0;
+	for (i = 0; i < 8; ++i)
+		args[i] = 0;
+	for (i = 0; i < 8; ++i) {
+		if (!scanhex(&args[i]) || termch == '\n')
+			break;
+		termch = 0;
+	}
+	func = (callfunc_t) adrs;
+	ret = 0;
+	if (setjmp(bus_error_jmp) == 0) {
+		debugger_fault_handler = handle_fault;
+		sync();
+		ret = func(args[0], args[1], args[2], args[3],
+			   args[4], args[5], args[6], args[7]);
+		sync();
+		printf("return value is %x\n", ret);
+	} else {
+		printf("*** %x exception occurred\n", fault_except);
+	}
+	debugger_fault_handler = 0;
+}
+
 /* Input scanning routines */
 int
 skipbl()

include/asm-ppc/bug.h

@@ -2,7 +2,7 @@
 #define _PPC_BUG_H
 
 #include <linux/config.h>
-#include <asm/system.h> /* for xmon definition */
+#include <asm/xmon.h>
 
 #ifdef CONFIG_XMON
 extern void xmon(struct pt_regs *);

include/asm-ppc/system.h

@@ -50,8 +50,6 @@
 #endif /* CONFIG_SMP */
 
 #ifdef __KERNEL__
-extern void xmon_irq(int, void *, struct pt_regs *);
-extern void xmon(struct pt_regs *excp);
 extern void print_backtrace(unsigned long *);
 extern void show_regs(struct pt_regs * regs);
 extern void flush_instruction_cache(void);

include/asm-ppc/xmon.h

+#ifndef __PPC_XMON_H
+#define __PPC_XMON_H
+#ifdef __KERNEL__
+
+struct pt_regs;
+
+extern void xmon(struct pt_regs *excp);
+extern void xmon_printf(const char *fmt, ...);
+extern void xmon_map_scc(void);
+extern int xmon_bpt(struct pt_regs *regs);
+extern int xmon_sstep(struct pt_regs *regs);
+extern int xmon_iabr_match(struct pt_regs *regs);
+extern int xmon_dabr_match(struct pt_regs *regs);
+extern void (*xmon_fault_handler)(struct pt_regs *regs);
+
+#endif
+#endif