1 files changed, 85 insertions, 0 deletions

diff --git a/arch/arm/mach-ep93xx/include/mach/uncompress.h b/arch/arm/mach-ep93xx/include/mach/uncompress.h
new file mode 100644
index 000000000000..1fd2f17de325
--- /dev/null
+++ b/arch/arm/mach-ep93xx/include/mach/uncompress.h
@@ -0,0 +1,85 @@
+/*
+ * arch/arm/mach-ep93xx/include/mach/uncompress.h
+ *
+ * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
+ *
+ * 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.
+ */
+
+#include <mach/ep93xx-regs.h>
+
+static unsigned char __raw_readb(unsigned int ptr)
+{
+        return *((volatile unsigned char *)ptr);
+}
+
+static unsigned int __raw_readl(unsigned int ptr)
+{
+        return *((volatile unsigned int *)ptr);
+}
+
+static void __raw_writeb(unsigned char value, unsigned int ptr)
+{
+        *((volatile unsigned char *)ptr) = value;
+}
+
+static void __raw_writel(unsigned int value, unsigned int ptr)
+{
+        *((volatile unsigned int *)ptr) = value;
+}
+
+
+#define PHYS_UART1_DATA         0x808c0000
+#define PHYS_UART1_FLAG         0x808c0018
+#define UART1_FLAG_TXFF         0x20
+
+static inline void putc(int c)
+{
+        int i;
+
+        for (i = 0; i < 1000; i++) {
+                /* Transmit fifo not full?  */
+                if (!(__raw_readb(PHYS_UART1_FLAG) & UART1_FLAG_TXFF))
+                        break;
+        }
+
+        __raw_writeb(c, PHYS_UART1_DATA);
+}
+
+static inline void flush(void)
+{
+}
+
+
+/*
+ * Some bootloaders don't turn off DMA from the ethernet MAC before
+ * jumping to linux, which means that we might end up with bits of RX
+ * status and packet data scribbled over the uncompressed kernel image.
+ * Work around this by resetting the ethernet MAC before we uncompress.
+ */
+#define PHYS_ETH_SELF_CTL               0x80010020
+#define ETH_SELF_CTL_RESET              0x00000001
+
+static void ethernet_reset(void)
+{
+        unsigned int v;
+
+        /* Reset the ethernet MAC.  */
+        v = __raw_readl(PHYS_ETH_SELF_CTL);
+        __raw_writel(v | ETH_SELF_CTL_RESET, PHYS_ETH_SELF_CTL);
+
+        /* Wait for reset to finish.  */
+        while (__raw_readl(PHYS_ETH_SELF_CTL) & ETH_SELF_CTL_RESET)
+                ;
+}
+
+
+static void arch_decomp_setup(void)
+{
+        ethernet_reset();
+}
+
+#define arch_decomp_wdog()