patch-2.4.19 linux-2.4.19/arch/mips/galileo-boards/ev64120/compressed/xfer.c

• Lines: 115
• Date: Fri Aug 2 17:39:43 2002
• Orig file: linux-2.4.18/arch/mips/galileo-boards/ev64120/compressed/xfer.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.18/arch/mips/galileo-boards/ev64120/compressed/xfer.c linux-2.4.19/arch/mips/galileo-boards/ev64120/compressed/xfer.c
@@ -0,0 +1,114 @@
+/*
+ *  arch/mips/galileo/compressed/xfer.c
+ *
+ *  By RidgeRun Inc,
+ *
+ *  Xfer an image from flash to ram.
+ *  For use with Galileo EVB64120A MIPS eval board.
+ */
+
+#include "linux/serial_reg.h"
+
+#define port 0xbd000000
+#define inb(addr) (*(volatile unsigned char *) ((unsigned long)(addr)))
+#define outb(b,addr) (*(volatile unsigned char *) ((unsigned long)(addr)) = (b))
+
+#ifdef RUNNINGFROMFLASH
+// This is where our image of interest is mapped to
+// when the jumbers are set for booting out of flash.
+// (flash part starts at address 0xbfC00000)
+#define srcAddr 0xbfC20000
+#else
+// This is where our image of interest is mapped to
+// when the jumbers are set for booting out of eprom.
+// (flash part starts at address 0xbf000000)
+#define srcAddr 0xbf020000
+#endif
+
+static int PortAddress(unsigned int channel, unsigned char reg);
+static void inline cons_hook(void);
+static void print_message(const char *string);
+
+/******************************
+ Routine:
+ Description:
+ ******************************/
+void XferToRam(void)
+{
+	unsigned int temp;
+	void (*entry_point) (void);
+
+	cons_hook();
+
+	print_message("Copying image from Flash to Ram.\n");
+	for (temp = 0; temp < (0x100000 - 0x20000); temp = temp + 4) {
+		*(volatile unsigned int *) (temp + 0xa0400000) =
+		    *(volatile unsigned int *) (temp + srcAddr);
+		if (*(volatile unsigned int *) (temp + 0xa0400000) !=
+		    *(volatile unsigned int *) (temp + srcAddr)) {
+			print_message
+			    ("Error!: copy verification failed.\n");
+			break;
+		}
+	}
+
+	print_message("Now jumping to the code just xferred to ram.\n");
+	entry_point = (void *) 0x80400000;
+	entry_point();
+}
+
+/******************************
+ Routine:
+ Description:
+ ******************************/
+static int PortAddress(unsigned int channel, unsigned char reg)
+{
+	unsigned int channelOffset = 0x20;
+	unsigned int regDelta = 4;
+	return (port + (channel * channelOffset) + (reg * regDelta));
+}
+
+/******************************
+ Routine:
+ Description:
+ ******************************/
+static void cons_hook(void)
+{
+	register int comstat;
+	unsigned temp;
+	unsigned int channel = 1;	// Channel 1 is the main serial
+	// connector of the EVB64120A. Channel 0
+	// is the secondary serial port (typically
+	// the unsoldered connector of the board).
+
+	temp = *(unsigned int *) 0xb4000464;
+	*(unsigned int *) 0xb4000464 = 0xffff4f14;
+
+	// Set Baud Rate, baud=115K
+	outb(0x83, PortAddress(channel, UART_LCR));
+	outb(0x00, PortAddress(channel, UART_DLM));
+	outb(0x02, PortAddress(channel, UART_DLL));
+	outb(0x03, PortAddress(channel, UART_LCR));
+
+	comstat = inb(PortAddress(channel, UART_LSR));
+	comstat = inb(PortAddress(channel, UART_RX));
+	outb(0x00, PortAddress(channel, UART_IER));
+}
+
+/******************************
+ Routine:
+ Description:
+ ******************************/
+static void print_message(const char *string)
+{
+	register int count, loop;
+	/* Display Opening Message */
+	for (count = 0; string[count]; count++) {
+		if (string[count] == '\n') {
+			*(char *) 0xbd000020 = '\r';
+		}
+		*(char *) 0xbd000020 = string[count];
+		for (loop = 0; loop < 2000; loop++) {
+		}
+	}
+}