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Diffstat (limited to 'arch/arm/boot/compressed/misc.c')
-rw-r--r--arch/arm/boot/compressed/misc.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/arch/arm/boot/compressed/misc.c b/arch/arm/boot/compressed/misc.c
index ace3fb5835d..283891c736c 100644
--- a/arch/arm/boot/compressed/misc.c
+++ b/arch/arm/boot/compressed/misc.c
@@ -30,6 +30,25 @@ static void putstr(const char *ptr);
#include <asm/arch/uncompress.h>
#ifdef CONFIG_DEBUG_ICEDCC
+
+#ifdef CONFIG_CPU_V6
+
+static void icedcc_putc(int ch)
+{
+ int status, i = 0x4000000;
+
+ do {
+ if (--i < 0)
+ return;
+
+ asm volatile ("mrc p14, 0, %0, c0, c1, 0" : "=r" (status));
+ } while (status & (1 << 29));
+
+ asm("mcr p14, 0, %0, c0, c5, 0" : : "r" (ch));
+}
+
+#else
+
static void icedcc_putc(int ch)
{
int status, i = 0x4000000;
@@ -44,6 +63,8 @@ static void icedcc_putc(int ch)
asm("mcr p14, 0, %0, c1, c0, 0" : : "r" (ch));
}
+#endif
+
#define putc(ch) icedcc_putc(ch)
#define flush() do { } while (0)
#endif