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Diffstat (limited to 'arch/arm/plat-mxc/include/mach/uncompress.h')
-rw-r--r--arch/arm/plat-mxc/include/mach/uncompress.h78
1 files changed, 78 insertions, 0 deletions
diff --git a/arch/arm/plat-mxc/include/mach/uncompress.h b/arch/arm/plat-mxc/include/mach/uncompress.h
new file mode 100644
index 00000000000..de6fe036598
--- /dev/null
+++ b/arch/arm/plat-mxc/include/mach/uncompress.h
@@ -0,0 +1,78 @@
+/*
+ * arch/arm/plat-mxc/include/mach/uncompress.h
+ *
+ *
+ *
+ * Copyright (C) 1999 ARM Limited
+ * Copyright (C) Shane Nay (shane@minirl.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#ifndef __ASM_ARCH_MXC_UNCOMPRESS_H__
+#define __ASM_ARCH_MXC_UNCOMPRESS_H__
+
+#define __MXC_BOOT_UNCOMPRESS
+
+#include <mach/hardware.h>
+
+#define UART(x) (*(volatile unsigned long *)(serial_port + (x)))
+
+#define USR2 0x98
+#define USR2_TXFE (1<<14)
+#define TXR 0x40
+#define UCR1 0x80
+#define UCR1_UARTEN 1
+
+/*
+ * The following code assumes the serial port has already been
+ * initialized by the bootloader. We search for the first enabled
+ * port in the most probable order. If you didn't setup a port in
+ * your bootloader then nothing will appear (which might be desired).
+ *
+ * This does not append a newline
+ */
+
+static void putc(int ch)
+{
+ static unsigned long serial_port = 0;
+
+ if (unlikely(serial_port == 0)) {
+ do {
+ serial_port = UART1_BASE_ADDR;
+ if (UART(UCR1) & UCR1_UARTEN)
+ break;
+ serial_port = UART2_BASE_ADDR;
+ if (UART(UCR1) & UCR1_UARTEN)
+ break;
+ return;
+ } while (0);
+ }
+
+ while (!(UART(USR2) & USR2_TXFE))
+ barrier();
+
+ UART(TXR) = ch;
+}
+
+#define flush() do { } while (0)
+
+/*
+ * nothing to do
+ */
+#define arch_decomp_setup()
+
+#define arch_decomp_wdog()
+
+#endif /* __ASM_ARCH_MXC_UNCOMPRESS_H__ */