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authorLinus Torvalds <torvalds@linux-foundation.org>2009-01-07 12:00:25 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-07 12:00:25 -0800
commit5bb47b9ff3d16d40f8d45380b373497a545fa280 (patch)
treee13dd34395473342dc75eff5cbaf5b1ea753631c /arch/blackfin/kernel/kgdb_test.c
parent2f2408a88cf8fa43febfd7fb5783e61b2937b0f9 (diff)
parent06af15e086e39a5a2a2413973a64af8e10122f28 (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6: (171 commits) Blackfin arch: fix bug - BF527 0.2 silicon has different CPUID (DSPID) value Blackfin arch: Enlarge flash partition for kenel for bf533/bf537 boards Blackfin arch: fix bug: kernel crash when enable SDIO host driver Blackfin arch: Print FP at level KERN_NOTICE Blackfin arch: drop ad73311 test code Blackfin arch: update board default configs Blackfin arch: Set PB4 as the default irq for bf548 board v1.4+. Blackfin arch: fix typo in early printk bit size processing Blackfin arch: enable reprogram cclk and sclk for bf518f-ezbrd Blackfin arch: add SDIO host driver platform data Blackfin arch: fix bug - kernel stops at initial console Blackfin arch: fix bug - kernel crash after config IP for ethernet port Blackfin arch: add sdh support for bf518f-ezbrd Blackfin arch: fix bug - kernel detects BF532 incorrectly Blackfin arch: add () to avoid warnings from gcc Blackfin arch: change HWTRACE Kconfig and set it on default Blackfin arch: Clean oprofile build path for blackfin Blackfin arch: remove hardware PM code, oprofile not use it Blackfin arch: rewrite get_sclk()/get_vco() Blackfin arch: cleanup and unify the ins functions ...
Diffstat (limited to 'arch/blackfin/kernel/kgdb_test.c')
-rw-r--r--arch/blackfin/kernel/kgdb_test.c123
1 files changed, 123 insertions, 0 deletions
diff --git a/arch/blackfin/kernel/kgdb_test.c b/arch/blackfin/kernel/kgdb_test.c
new file mode 100644
index 00000000000..3dba9c17304
--- /dev/null
+++ b/arch/blackfin/kernel/kgdb_test.c
@@ -0,0 +1,123 @@
+/*
+ * 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");