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Commit 459249aa authored by Mike Frysinger's avatar Mike Frysinger Committed by Bryan Wu
Browse files

Blackfin arch: merge kgdb test code using common CONFIG_KGDB_TESTS 



[Grace Pan <grace.pan@analog.com>: Add case for kgdb test in l1 and l2]

Signed-off-by: default avatarGrace Pan <grace.pan@analog.com>
Signed-off-by: default avatarMike Frysinger <vapier.adi@gmail.com>
Signed-off-by: default avatarBryan Wu <cooloney@kernel.org>
parent dbdf20db

arch/blackfin/Kconfig.debug

+7 −1
Original line number Original line Diff line number Diff line
@@ -21,6 +21,12 @@ config DEBUG_STACK_USAGE 
config HAVE_ARCH_KGDB

config HAVE_ARCH_KGDB

	def_bool y

	def_bool y





config KGDB_TESTCASE

	tristate "KGDB: for test case in expect"

	default n

	help

	  This is a kgdb test case for automated testing.



config DEBUG_VERBOSE

config DEBUG_VERBOSE

	bool "Verbose fault messages"

	bool "Verbose fault messages"

	default y

	default y

arch/blackfin/kernel/Makefile

+1 −0
Original line number Original line Diff line number Diff line
@@ -19,4 +19,5 @@ obj-$(CONFIG_BFIN_GPTIMERS) += gptimers.o 
obj-$(CONFIG_CPLB_INFO)              += cplbinfo.o

obj-$(CONFIG_CPLB_INFO)              += cplbinfo.o

obj-$(CONFIG_MODULES)                += module.o

obj-$(CONFIG_MODULES)                += module.o

obj-$(CONFIG_KGDB)                   += kgdb.o

obj-$(CONFIG_KGDB)                   += kgdb.o

obj-$(CONFIG_KGDB_TESTCASE)          += kgdb_test.o

obj-$(CONFIG_EARLY_PRINTK)           += early_printk.o
 
obj-$(CONFIG_EARLY_PRINTK)           += early_printk.o

arch/blackfin/kernel/kgdb_test.c

0 → 100644
+123 −0
Original line number Original line Diff line number Diff line 
/*

 * arch/blackfin/kernel/kgdb_test.c - Blackfin kgdb tests

 *

 * Copyright 2005-2008 Analog Devices Inc.

 *

 * Licensed under the GPL-2 or later.

 */



#include <linux/module.h>

#include <linux/kernel.h>

#include <linux/init.h>

#include <linux/proc_fs.h>



#include <asm/current.h>

#include <asm/uaccess.h>

#include <asm/system.h>



#include <asm/blackfin.h>



static char cmdline[256];

static unsigned long len;



static int num1 __attribute__((l1_data));



void kgdb_l1_test(void) __attribute__((l1_text));



void kgdb_l1_test(void)

{

	printk(KERN_ALERT "L1(before change) : data variable addr = 0x%p, data value is %d\n", &num1, num1);

	printk(KERN_ALERT "L1 : code function addr = 0x%p\n", kgdb_l1_test);

	num1 = num1 + 10 ;

	printk(KERN_ALERT "L1(after change) : data variable addr = 0x%p, data value is %d\n", &num1, num1);

	return ;

}

#if L2_LENGTH



static int num2 __attribute__((l2));

void kgdb_l2_test(void) __attribute__((l2));



void kgdb_l2_test(void)

{

	printk(KERN_ALERT "L2(before change) : data variable addr = 0x%p, data value is %d\n", &num2, num2);

	printk(KERN_ALERT "L2 : code function addr = 0x%p\n", kgdb_l2_test);

	num2 = num2 + 20 ;

	printk(KERN_ALERT "L2(after change) : data variable addr = 0x%p, data value is %d\n", &num2, num2);

	return ;

}



#endif





int kgdb_test(char *name, int len, int count, int z)

{

	printk(KERN_DEBUG "kgdb name(%d): %s, %d, %d\n", len, name, count, z);

	count = z;

	return count;

}



static int test_proc_output(char *buf)

{

	kgdb_test("hello world!", 12, 0x55, 0x10);

	kgdb_l1_test();

	#if L2_LENGTH

	kgdb_l2_test();

	#endif



	return 0;

}



static int test_read_proc(char *page, char **start, off_t off,

				 int count, int *eof, void *data)

{

	int len;



	len = test_proc_output(page);

	if (len <= off+count)

		*eof = 1;

	*start = page + off;

	len -= off;

	if (len > count)

		len = count;

	if (len < 0)

		len = 0;

	return len;

}



static int test_write_proc(struct file *file, const char *buffer,

				 unsigned long count, void *data)

{

	if (count >= 256)

		len = 255;

	else

		len = count;



	memcpy(cmdline, buffer, count);

	cmdline[len] = 0;



	return len;

}



static int __init kgdbtest_init(void)

{

	struct proc_dir_entry *entry;



	entry = create_proc_entry("kgdbtest", 0, NULL);

	if (entry == NULL)

		return -ENOMEM;



	entry->read_proc = test_read_proc;

	entry->write_proc = test_write_proc;

	entry->data = NULL;



	return 0;

}



static void __exit kgdbtest_exit(void)

{

	remove_proc_entry("kgdbtest", NULL);

}



module_init(kgdbtest_init);

module_exit(kgdbtest_exit);

MODULE_LICENSE("GPL");