1 files changed, 164 insertions, 0 deletions
diff --git a/arch/arm/mach-ns9xxx/include/mach/uncompress.h b/arch/arm/mach-ns9xxx/include/mach/uncompress.h
new file mode 100644
index 00000000000..5dbc3c5167c
--- /dev/null
+++ b/arch/arm/mach-ns9xxx/include/mach/uncompress.h
@@ -0,0 +1,164 @@
+/*
+ * arch/arm/mach-ns9xxx/include/mach/uncompress.h
+ *
+ * Copyright (C) 2006 by Digi International Inc.
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ */
+#ifndef __ASM_ARCH_UNCOMPRESS_H
+#define __ASM_ARCH_UNCOMPRESS_H
+
+#include <asm/io.h>
+
+#define __REG(x)	((void __iomem __force *)(x))
+
+static void putc_dummy(char c, void __iomem *base)
+{
+	/* nothing */
+}
+
+static void putc_ns9360(char c, void __iomem *base)
+{
+	static int t = 0x10000;
+	do {
+		if (t)
+			--t;
+
+		if (__raw_readl(base + 8) & (1 << 3)) {
+			__raw_writeb(c, base + 16);
+			t = 0x10000;
+			break;
+		}
+	} while (t);
+}
+
+static void putc_a9m9750dev(char c, void __iomem *base)
+{
+	static int t = 0x10000;
+	do {
+		if (t)
+			--t;
+
+		if (__raw_readb(base + 5) & (1 << 5)) {
+			__raw_writeb(c, base);
+			t = 0x10000;
+			break;
+		}
+	} while (t);
+
+}
+
+static void putc_ns921x(char c, void __iomem *base)
+{
+	static int t = 0x10000;
+	do {
+		if (t)
+			--t;
+
+		if (!(__raw_readl(base) & (1 << 11))) {
+			__raw_writeb(c, base + 0x0028);
+			t = 0x10000;
+			break;
+		}
+	} while (t);
+}
+
+#define MSCS __REG(0xA0900184)
+
+#define NS9360_UARTA	__REG(0x90200040)
+#define NS9360_UARTB	__REG(0x90200000)
+#define NS9360_UARTC	__REG(0x90300000)
+#define NS9360_UARTD	__REG(0x90300040)
+
+#define NS9360_UART_ENABLED(base)					\
+		(__raw_readl(NS9360_UARTA) & (1 << 31))
+
+#define A9M9750DEV_UARTA	__REG(0x40000000)
+
+#define NS921XSYS_CLOCK	__REG(0xa090017c)
+#define NS921X_UARTA	__REG(0x90010000)
+#define NS921X_UARTB	__REG(0x90018000)
+#define NS921X_UARTC	__REG(0x90020000)
+#define NS921X_UARTD	__REG(0x90028000)
+
+#define NS921X_UART_ENABLED(base)					\
+		(__raw_readl((base) + 0x1000) & (1 << 29))
+
+static void autodetect(void (**putc)(char, void __iomem *), void __iomem **base)
+{
+	if (((__raw_readl(MSCS) >> 16) & 0xfe) == 0x00) {
+		/* ns9360 or ns9750 */
+		if (NS9360_UART_ENABLED(NS9360_UARTA)) {
+			*putc = putc_ns9360;
+			*base = NS9360_UARTA;
+			return;
+		} else if (NS9360_UART_ENABLED(NS9360_UARTB)) {
+			*putc = putc_ns9360;
+			*base = NS9360_UARTB;
+			return;
+		} else if (NS9360_UART_ENABLED(NS9360_UARTC)) {
+			*putc = putc_ns9360;
+			*base = NS9360_UARTC;
+			return;
+		} else if (NS9360_UART_ENABLED(NS9360_UARTD)) {
+			*putc = putc_ns9360;
+			*base = NS9360_UARTD;
+			return;
+		} else if (__raw_readl(__REG(0xa09001f4)) == 0xfffff001) {
+			*putc = putc_a9m9750dev;
+			*base = A9M9750DEV_UARTA;
+			return;
+		}
+	} else if (((__raw_readl(MSCS) >> 16) & 0xfe) == 0x02) {
+		/* ns921x */
+		u32 clock = __raw_readl(NS921XSYS_CLOCK);
+
+		if ((clock & (1 << 1)) &&
+				NS921X_UART_ENABLED(NS921X_UARTA)) {
+			*putc = putc_ns921x;
+			*base = NS921X_UARTA;
+			return;
+		} else if ((clock & (1 << 2)) &&
+				NS921X_UART_ENABLED(NS921X_UARTB)) {
+			*putc = putc_ns921x;
+			*base = NS921X_UARTB;
+			return;
+		} else if ((clock & (1 << 3)) &&
+				NS921X_UART_ENABLED(NS921X_UARTC)) {
+			*putc = putc_ns921x;
+			*base = NS921X_UARTC;
+			return;
+		} else if ((clock & (1 << 4)) &&
+				NS921X_UART_ENABLED(NS921X_UARTD)) {
+			*putc = putc_ns921x;
+			*base = NS921X_UARTD;
+			return;
+		}
+	}
+
+	*putc = putc_dummy;
+}
+
+void (*myputc)(char, void __iomem *);
+void __iomem *base;
+
+static void putc(char c)
+{
+	myputc(c, base);
+}
+
+static void arch_decomp_setup(void)
+{
+	autodetect(&myputc, &base);
+}
+#define arch_decomp_wdog()
+
+static void flush(void)
+{
+	/* nothing */
+}
+
+#endif /* ifndef __ASM_ARCH_UNCOMPRESS_H */