u-boot-lpc2294.patch

将U-boot1.1.4移植到了MagicARM2200平台。Nor_Flash_SST39VF1601检测正常。网络芯片DM9000E工作正常。没有能够实现Nand_Flash的驱动。

+#endif
+
+
+void bad_mode (void)
+{
+	panic ("Resetting CPU ...\n");
+	reset_cpu (0);
+}
+
+void show_regs (struct pt_regs *regs)
+{
+	unsigned long flags;
+	const char *processor_modes[] =
+		{ "USER_26", "FIQ_26", "IRQ_26", "SVC_26", "UK4_26", "UK5_26",
+				"UK6_26", "UK7_26",
+		"UK8_26", "UK9_26", "UK10_26", "UK11_26", "UK12_26", "UK13_26",
+				"UK14_26", "UK15_26",
+		"USER_32", "FIQ_32", "IRQ_32", "SVC_32", "UK4_32", "UK5_32",
+				"UK6_32", "ABT_32",
+		"UK8_32", "UK9_32", "UK10_32", "UND_32", "UK12_32", "UK13_32",
+				"UK14_32", "SYS_32"
+	};
+
+	flags = condition_codes (regs);
+
+	printf ("pc : [<%08lx>]    lr : [<%08lx>]\n"
+			"sp : %08lx  ip : %08lx  fp : %08lx\n",
+			instruction_pointer (regs),
+			regs->ARM_lr, regs->ARM_sp, regs->ARM_ip, regs->ARM_fp);
+	printf ("r10: %08lx  r9 : %08lx  r8 : %08lx\n",
+			regs->ARM_r10, regs->ARM_r9, regs->ARM_r8);
+	printf ("r7 : %08lx  r6 : %08lx  r5 : %08lx  r4 : %08lx\n",
+			regs->ARM_r7, regs->ARM_r6, regs->ARM_r5, regs->ARM_r4);
+	printf ("r3 : %08lx  r2 : %08lx  r1 : %08lx  r0 : %08lx\n",
+			regs->ARM_r3, regs->ARM_r2, regs->ARM_r1, regs->ARM_r0);
+	printf ("Flags: %c%c%c%c",
+			flags & CC_N_BIT ? 'N' : 'n',
+			flags & CC_Z_BIT ? 'Z' : 'z',
+			flags & CC_C_BIT ? 'C' : 'c', flags & CC_V_BIT ? 'V' : 'v');
+	printf ("  IRQs %s  FIQs %s  Mode %s%s\n",
+			interrupts_enabled (regs) ? "on" : "off",
+			fast_interrupts_enabled (regs) ? "on" : "off",
+			processor_modes[processor_mode (regs)],
+			thumb_mode (regs) ? " (T)" : "");
+}
+
+void do_undefined_instruction (struct pt_regs *pt_regs)
+{
+	printf ("undefined instruction\n");
+	show_regs (pt_regs);
+	bad_mode ();
+}
+
+void do_software_interrupt (struct pt_regs *pt_regs)
+{
+	printf ("software interrupt\n");
+	show_regs (pt_regs);
+	bad_mode ();
+}
+
+void do_prefetch_abort (struct pt_regs *pt_regs)
+{
+	printf ("prefetch abort\n");
+	show_regs (pt_regs);
+	bad_mode ();
+}
+
+void do_data_abort (struct pt_regs *pt_regs)
+{
+	printf ("data abort\n");
+	show_regs (pt_regs);
+	bad_mode ();
+}
+
+void do_not_used (struct pt_regs *pt_regs)
+{
+	printf ("not used\n");
+	show_regs (pt_regs);
+	bad_mode ();
+}
+
+void do_fiq (struct pt_regs *pt_regs)
+{
+	printf ("fast interrupt request\n");
+	show_regs (pt_regs);
+	bad_mode ();
+}
+
+void do_irq (struct pt_regs *pt_regs)
+{
+	printf ("interrupt request\n");
+	show_regs (pt_regs);
+	bad_mode ();
+}
+
+static ulong timestamp;
+static ulong lastdec;
+
+int interrupt_init (void)
+{
+	T0PR=0x000003e7;
+	T0MR0=0x0000ffff;
+	T0MCR=0x00000002;
+	T0TCR=0x00000003;
+	T0TCR=0x00000001;
+
+	lastdec = TIMER_LOAD_VAL;
+	timestamp = 0;
+	return 0;
+}
+
+/*
+ * timer without interrupts
+ */
+
+void reset_timer (void)
+{
+	reset_timer_masked ();
+}
+
+ulong get_timer (ulong base)
+{
+	return get_timer_masked () - base;
+}
+
+void set_timer (ulong t)
+{
+	timestamp = t;
+}
+
+void udelay (unsigned long usec)
+{
+	ulong tmo;
+
+	tmo = usec / 1000;
+	tmo *= CFG_HZ;
+	tmo /= 1000;
+
+	tmo += get_timer (0);
+
+	while (get_timer_masked () < tmo)
+		/*NOP*/;
+}
+
+void reset_timer_masked (void)
+{
+	/* reset time */
+	lastdec = READ_TIMER;
+	timestamp = 0;
+}
+
+ulong get_timer_masked (void)
+{
+	ulong now = READ_TIMER;
+
+	if (now >= lastdec) {
+		/* normal mode */
+		timestamp += now - lastdec;
+	} else {
+		/* we have an overflow ... */
+		timestamp += now + TIMER_LOAD_VAL - lastdec;
+	}
+	lastdec = now;
+
+	return timestamp;
+}
+
+void udelay_masked (unsigned long usec)
+{
+	ulong tmo;
+
+	tmo = usec / 1000;
+	tmo *= CFG_HZ;
+	tmo /= 1000;
+
+	tmo += get_timer (0);
+
+	reset_timer_masked ();
+
+	while (get_timer_masked () < tmo)
+		/*NOP*/;
+}
diff -Naur u-boot-origin/cpu/arm7tdmi/Makefile u-boot-1.1.3/cpu/arm7tdmi/Makefile
--- u-boot-origin/cpu/arm7tdmi/Makefile	1970-01-01 07:00:00.000000000 +0700
+++ u-boot-1.1.3/cpu/arm7tdmi/Makefile	2005-09-07 09:43:36.000000000 +0800
@@ -0,0 +1,43 @@
+#
+# (C) Copyright 2000-2004
+# Wolfgang Denk, DENX Software Engineering, [e-mail].
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# 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
+#
+
+include $(TOPDIR)/config.mk
+
+LIB	= lib$(CPU).a
+
+START	= start.o
+OBJS	= serial.o interrupts.o cpu.o
+
+all:	.depend $(START) $(LIB)
+
+$(LIB):	$(OBJS)
+	$(AR) crv $@ $(OBJS)
+
+#########################################################################
+
+.depend:	Makefile $(START:.o=.S) $(OBJS:.o=.c)
+		$(CC) -M $(CFLAGS) $(START:.o=.S) $(OBJS:.o=.c) > $@
+
+sinclude .depend
+
+#########################################################################
diff -Naur u-boot-origin/cpu/arm7tdmi/serial.c u-boot-1.1.3/cpu/arm7tdmi/serial.c
--- u-boot-origin/cpu/arm7tdmi/serial.c	1970-01-01 07:00:00.000000000 +0700
+++ u-boot-1.1.3/cpu/arm7tdmi/serial.c	2005-09-07 09:43:36.000000000 +0800
@@ -0,0 +1,193 @@
+/*
+ * (C) Copyright 2004
+ * DAVE Srl
+ * http://www.dave-tech.it
+ * http://www.wawnet.biz
+ * mailto:[e-mail]
+ *
+ * (C) Copyright 2002-2004
+ * Wolfgang Denk, DENX Software Engineering, <[e-mail]>
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <[e-mail]>
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Alex Zuepke <[e-mail]>
+ *
+ * Copyright (C) 1999 2000 2001 Erik Mouw ([e-mail])
+ *
+ * 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
+ *
+ */
+
+#include <common.h>
+#include <asm/hardware.h>
+
+#define	USRRxData      	(1 << 0)
+#define	USRTxHoldEmpty 	(1 << 6)
+#define GET_CHAR(p)	p
+#define PUT_CHAR(p,c)  	(p= (unsigned )(c))
+#define TX_READY(s)    	((s) & USRTxHoldEmpty)
+#define RX_DATA(s)     	((s) & USRRxData)
+
+/* flush serial input queue. returns 0 on success or negative error
+ * number otherwise
+ */
+static int serial_flush_input(void)
+{
+	volatile u32 tmp;
+
+	/* keep on reading as long as the receiver is not empty */
+	while(RX_DATA(U0LSR)) {
+		tmp = GET_CHAR(U0RBR);
+	}
+
+	return 0;
+}
+
+
+/* flush output queue. returns 0 on success or negative error number
+ * otherwise
+ */
+static int serial_flush_output(void)
+{
+	/* wait until the transmitter is no longer busy */
+	while(TX_READY(U0LSR)==0) {
+	}
+
+	return 0;
+}
+
+
+void serial_setbrg (void)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	u32 divisor = 0;
+
+	/* get correct divisor */
+	switch(gd->baudrate) {
+
+	case 1200:
+    divisor = 520; 
+		break;
+
+	case 9600:
+    divisor = 65;
+		break;
+
+	case 19200:
+    divisor = 32;
+		break;
+
+	case 38400:
+    divisor = 16;
+
+
+	case 57600:
+    divisor = 10;
+
+
+	case 115200:
+    divisor = 5;
+
+	}
+	U0LCR = 0x83;
+	if(divisor==520)
+		{
+			U0DLL = 0x08;
+			U0DLM = 0x02;
+			}
+	else
+		U0DLL = divisor;
+	U0LCR = 0x03;
+	U0IER = 0x00000007;
+	U0FCR = 0x00000081;
+	serial_flush_output();
+	serial_flush_input();
+	
+	for(divisor=0; divisor<100; divisor++) {
+		/* NOP */
+	}
+}
+
+
+/*
+ * Initialise the serial port with the given baudrate. The settings
+ * are always 8 data bits, no parity, 1 stop bit, no start bits.
+ *
+ */
+int serial_init (void)
+{
+	serial_setbrg ();
+
+	return (0);
+}
+
+
+/*
+ * Output a single byte to the serial port.
+ */
+void serial_putc (const char c)
+{
+	/* wait for room in the transmit FIFO */
+	while(TX_READY(U0LSR)==0);
+
+	PUT_CHAR(U0THR,c);
+
+	/*
+		to be polite with serial console add a line feed
+		to the carriage return character
+	*/
+	if (c=='\n')
+		serial_putc('\r');
+}
+
+/*
+ * Read a single byte from the serial port. Returns 1 on success, 0
+ * otherwise. When the function is succesfull, the character read is
+ * written into its argument c.
+ */
+int serial_tstc (void)
+{
+	return (RX_DATA(U0LSR));
+}
+
+/*
+ * Read a single byte from the serial port. Returns 1 on success, 0
+ * otherwise. When the function is succesfull, the character read is
+ * written into its argument c.
+ */
+int serial_getc (void)
+{
+	int rv;
+
+	for(;;) {
+		rv = serial_tstc();
+
+		if(rv > 0)
+			return (GET_CHAR(U0RBR));
+	}
+}
+
+void
+serial_puts (const char *s)
+{
+	while (*s != 0) {
+		serial_putc (*s++);
+	}
+}
diff -Naur u-boot-origin/cpu/arm7tdmi/start.S u-boot-1.1.3/cpu/arm7tdmi/start.S
--- u-boot-origin/cpu/arm7tdmi/start.S	1970-01-01 07:00:00.000000000 +0700
+++ u-boot-1.1.3/cpu/arm7tdmi/start.S	2005-09-08 14:08:38.000000000 +0800
@@ -0,0 +1,331 @@
+/*
+ * Startup Code for lpc2294 CPU-core
+ *
+ * (C) Copyright 2005
+ * jay
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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
+ */
+
+
+#include <config.h>
+#include <version.h>
+
+
+/*
+ * Jump vector table
+ */
+
+
+.globl _start