[ARM] Fix decompressor serial IO to give CRLF not LFCR

As per the corresponding change to the serial drivers, arrange
for ARM decompressors to give CRLF.  Move the common putstr code
into misc.c such that machines only need to supply "putc" and
"flush" functions.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 24 insertions, 23 deletions

diff --git a/include/asm-arm/arch-ebsa110/uncompress.h b/include/asm-arm/arch-ebsa110/uncompress.h
index eee95581a923..66b19c7fd908 100644
--- a/include/asm-arm/arch-ebsa110/uncompress.h
+++ b/include/asm-arm/arch-ebsa110/uncompress.h
@@ -8,33 +8,34 @@
  * published by the Free Software Foundation.
  */
 
+#include <linux/serial_reg.h>
+
+#define SERIAL_BASE     ((unsigned char *)0xfe000be0)
+
 /*
  * This does not append a newline
  */
-static void putstr(const char *s)
+static inline void putc(int c)
+{
+        unsigned char v, *base = SERIAL_BASE;
+
+        do {
+                v = base[UART_LSR << 2];
+                barrier();
+        } while (!(v & UART_LSR_THRE));
+
+        base[UART_TX << 2] = c;
+}
+
+static inline void flush(void)
 {
-        unsigned long tmp1, tmp2;
-        __asm__ __volatile__(
-        "ldrb   %0, [%2], #1\n"
-"       teq     %0, #0\n"
-"       beq     3f\n"
-"1:     strb    %0, [%3]\n"
-"2:     ldrb    %1, [%3, #0x14]\n"
-"       and     %1, %1, #0x60\n"
-"       teq     %1, #0x60\n"
-"       bne     2b\n"
-"       teq     %0, #'\n'\n"
-"       moveq   %0, #'\r'\n"
-"       beq     1b\n"
-"       ldrb    %0, [%2], #1\n"
-"       teq     %0, #0\n"
-"       bne     1b\n"
-"3:     ldrb    %1, [%3, #0x14]\n"
-"       and     %1, %1, #0x60\n"
-"       teq     %1, #0x60\n"
-"       bne     3b"
-        : "=&r" (tmp1), "=&r" (tmp2)
-        : "r" (s), "r" (0xf0000be0) : "cc");
+        unsigned char v, *base = SERIAL_BASE;
+
+        do {
+                v = base[UART_LSR << 2];
+                barrier();
+        } while ((v & (UART_LSR_TEMT|UART_LSR_THRE)) !=
+                 (UART_LSR_TEMT|UART_LSR_THRE));
 }
 
 /*