ColdFire: Add MCF5227x cpu and M52277EVB support-1

Signed-off-by: TsiChungLiew <Tsi-Chung.Liew@freescale.com> Signed-off by: John Rigby <jrigby@freescale.com>
2008-01-14 17:43:33 -06:00 · 2008-01-14 17:43:33 -06:00 · 1552af70ec
commit 1552af70ec
parent 397b7b81a1
13 changed files with 841 additions and 0 deletions
--- a/1
+++ b/1
@ -647,6 +647,7 @@ Zachary P. Landau <zachary.landau@labxtechnologies.com>

 TsiChung Liew <Tsi-Chung.Liew@freescale.com>

+	M52277EVB		mcf5227x
 	M5235EVB		mcf52x2
 	M5329EVB		mcf532x
 	M5373EVB		mcf532x
--- a/1
+++ b/1
@ -643,6 +643,7 @@ LIST_coldfire="			\
 	EB+MCF-EV123		\
 	EB+MCF-EV123_internal	\
 	idmr			\
+	M52277EVB		\
 	M5235EVB		\
 	M5249EVB		\
 	M5253EVB		\
--- a/3
+++ b/3
@ -1739,6 +1739,9 @@ ZPC1900_config: unconfig
 ## Coldfire
 #########################################################################

+M52277EVB_config:	unconfig
+	@$(MKCONFIG) -a M52277EVB m68k mcf5227x m52277evb freescale
+
 M5235EVB_config \
 M5235EVB_Flash16_config \
 M5235EVB_Flash32_config:	unconfig
--- a/1
+++ b/1
@ -136,6 +136,7 @@ Directory Hierarchy:
  - i386	Files specific to i386 CPUs
  - ixp		Files specific to Intel XScale IXP CPUs
  - mcf52x2	Files specific to Freescale ColdFire MCF52x2 CPUs
+  - mcf5227x	Files specific to Freescale ColdFire MCF5227x CPUs
  - mcf532x	Files specific to Freescale ColdFire MCF5329 CPUs
  - mcf5445x	Files specific to Freescale ColdFire MCF5445x CPUs
  - mips	Files specific to MIPS CPUs
--- a/board/freescale/m52277evb/Makefile
+++ b/board/freescale/m52277evb/Makefile
@ -0,0 +1,44 @@
+#
+# (C) Copyright 2000-2003
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# 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	= $(obj)lib$(BOARD).a
+
+COBJS	= $(BOARD).o
+
+SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS))
+SOBJS	:= $(addprefix $(obj),$(SOBJS))
+
+$(LIB):	$(obj).depend $(OBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS)
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
--- a/board/freescale/m52277evb/config.mk
+++ b/board/freescale/m52277evb/config.mk
@ -0,0 +1,25 @@
+#
+# (C) Copyright 2000-2003
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+# Coldfire contribution by Bernhard Kuhn <bkuhn@metrowerks.com>
+#
+# 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
+#
+
+TEXT_BASE = 0
--- a/board/freescale/m52277evb/m52277evb.c
+++ b/board/freescale/m52277evb/m52277evb.c
@ -0,0 +1,86 @@
+/*
+ * (C) Copyright 2000-2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
+ * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
+ *
+ * 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 <common.h>
+#include <asm/immap.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int checkboard(void)
+{
+	puts("Board: ");
+	puts("Freescale M52277 EVB\n");
+	return 0;
+};
+
+long int initdram(int board_type)
+{
+	volatile sdramc_t *sdram = (volatile sdramc_t *)(MMAP_SDRAM);
+	u32 dramsize, i;
+
+	dramsize = CFG_SDRAM_SIZE * 0x100000;
+
+	for (i = 0x13; i < 0x20; i++) {
+		if (dramsize == (1 << i))
+			break;
+	}
+	i--;
+
+	sdram->sdcs0 = (CFG_SDRAM_BASE | i);
+
+	sdram->sdcfg1 = CFG_SDRAM_CFG1;
+	sdram->sdcfg2 = CFG_SDRAM_CFG2;
+
+	/* Issue PALL */
+	sdram->sdcr = CFG_SDRAM_CTRL | 2;
+
+	/* Issue LEMR */
+	/*sdram->sdmr = CFG_SDRAM_EMOD; */
+	sdram->sdmr = CFG_SDRAM_MODE;
+
+	udelay(1000);
+
+	/* Issue PALL */
+	sdram->sdcr = CFG_SDRAM_CTRL | 2;
+
+	/* Perform two refresh cycles */
+	sdram->sdcr = CFG_SDRAM_CTRL | 4;
+	sdram->sdcr = CFG_SDRAM_CTRL | 4;
+
+	sdram->sdcr = (CFG_SDRAM_CTRL & ~0x80000000) | 0x10000c00;
+
+	udelay(100);
+
+	return (dramsize);
+};
+
+int testdram(void)
+{
+	/* TODO: XXX XXX XXX */
+	printf("DRAM test not implemented!\n");
+
+	return (0);
+}
--- a/board/freescale/m52277evb/u-boot.lds
+++ b/board/freescale/m52277evb/u-boot.lds
@ -0,0 +1,145 @@
+/*
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * 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
+ */
+
+OUTPUT_ARCH(m68k)
+SEARCH_DIR(/lib); SEARCH_DIR(/usr/lib); SEARCH_DIR(/usr/local/lib);
+/* Do we need any of these for elf?
+   __DYNAMIC = 0;    */
+SECTIONS
+{
+  /* Read-only sections, merged into text segment: */
+  . = + SIZEOF_HEADERS;
+  .interp : { *(.interp) }
+  .hash          : { *(.hash)		}
+  .dynsym        : { *(.dynsym)		}
+  .dynstr        : { *(.dynstr)		}
+  .rel.text      : { *(.rel.text)		}
+  .rela.text     : { *(.rela.text) 	}
+  .rel.data      : { *(.rel.data)		}
+  .rela.data     : { *(.rela.data) 	}
+  .rel.rodata    : { *(.rel.rodata) 	}
+  .rela.rodata   : { *(.rela.rodata) 	}
+  .rel.got       : { *(.rel.got)		}
+  .rela.got      : { *(.rela.got)		}
+  .rel.ctors     : { *(.rel.ctors)	}
+  .rela.ctors    : { *(.rela.ctors)	}
+  .rel.dtors     : { *(.rel.dtors)	}
+  .rela.dtors    : { *(.rela.dtors)	}
+  .rel.bss       : { *(.rel.bss)		}
+  .rela.bss      : { *(.rela.bss)		}
+  .rel.plt       : { *(.rel.plt)		}
+  .rela.plt      : { *(.rela.plt)		}
+  .init          : { *(.init)	}
+  .plt : { *(.plt) }
+  .text      :
+  {
+    /* WARNING - the following is hand-optimized to fit within	*/
+    /* the sector layout of our flash chips!	XXX FIXME XXX	*/
+
+    cpu/mcf5227x/start.o	(.text)
+    cpu/mcf5227x/libmcf5227x.a	(.text)
+    lib_m68k/libm68k.a		(.text)
+    lib_generic/libgeneric.a	(.text)
+    common/cmd_mem.o		(.text)
+    common/main.o		(.text)
+
+    . = DEFINED(env_offset) ? env_offset : .;
+    common/environment.o	(.text)
+
+    *(.text)
+    *(.fixup)
+    *(.got1)
+  }
+  _etext = .;
+  PROVIDE (etext = .);
+  .rodata    :
+  {
+    *(.rodata)
+    *(.rodata1)
+  }
+  .fini      : { *(.fini)    } =0
+  .ctors     : { *(.ctors)   }
+  .dtors     : { *(.dtors)   }
+
+  /* Read-write section, merged into data segment: */
+  . = (. + 0x00FF) & 0xFFFFFF00;
+  _erotext = .;
+  PROVIDE (erotext = .);
+
+  .reloc   :
+  {
+    __got_start = .;
+    *(.got)
+    __got_end = .;
+    _GOT2_TABLE_ = .;
+    *(.got2)
+    _FIXUP_TABLE_ = .;
+    *(.fixup)
+  }
+  __got2_entries = (_FIXUP_TABLE_ - _GOT2_TABLE_) >>2;
+  __fixup_entries = (. - _FIXUP_TABLE_)>>2;
+
+  .data    :
+  {
+    *(.data)
+    *(.data1)
+    *(.sdata)
+    *(.sdata2)
+    *(.dynamic)
+    CONSTRUCTORS
+  }
+  _edata  =  .;
+  PROVIDE (edata = .);
+
+  . = .;
+  __u_boot_cmd_start = .;
+  .u_boot_cmd : { *(.u_boot_cmd) }
+  __u_boot_cmd_end = .;
+
+
+  . = .;
+  __start___ex_table = .;
+  __ex_table : { *(__ex_table) }
+  __stop___ex_table = .;
+
+  . = ALIGN(256);
+  __init_begin = .;
+  .text.init : { *(.text.init) }
+  .data.init : { *(.data.init) }
+  . = ALIGN(256);
+  __init_end = .;
+
+  __bss_start = .;
+  .bss       :
+  {
+   _sbss = .;
+   *(.sbss) *(.scommon)
+   *(.dynbss)
+   *(.bss)
+   *(COMMON)
+   . = ALIGN(4);
+   _ebss = .;
+  }
+  _end = . ;
+  PROVIDE (end = .);
+}
--- a/doc/README.m52277evb
+++ b/doc/README.m52277evb
@ -0,0 +1,237 @@
+Freescale MCF52277EVB ColdFire Development Board
+================================================
+
+TsiChung Liew(Tsi-Chung.Liew@freescale.com)
+Created Jan 8, 2008
+===========================================
+
+
+Changed files:
+==============
+
+- board/freescale/m52277evb/m52277evb.c	Dram setup
+- board/freescale/m52277evb/Makefile	Makefile
+- board/freescale/m52277evb/config.mk	config make
+- board/freescale/m52277evb/u-boot.lds	Linker description
+
+- cpu/mcf5227x/cpu.c		cpu specific code
+- cpu/mcf5227x/cpu_init.c	FBCS, Mux pins, icache and RTC extra regs
+- cpu/mcf5227x/interrupts.c	cpu specific interrupt support
+- cpu/mcf5227x/speed.c		system, flexbus, and cpu clock
+- cpu/mcf5227x/Makefile		Makefile
+- cpu/mcf5227x/config.mk	config make
+- cpu/mcf5227x/start.S		start up assembly code
+
+- doc/README.m52277evb		This readme file
+
+- drivers/serial/mcfuart.c	ColdFire common UART driver
+- drivers/rtc/mcfrtc.c		Realtime clock Driver
+
+- include/asm-m68k/bitops.h		Bit operation function export
+- include/asm-m68k/byteorder.h		Byte order functions
+- include/asm-m68k/crossbar.h		CrossBar structure and definition
+- include/asm-m68k/dspi.h		DSPI structure and definition
+- include/asm-m68k/edma.h		eDMA structure and definition
+- include/asm-m68k/flexbus.h		FlexBus structure and definition
+- include/asm-m68k/fsl_i2c.h		I2C structure and definition
+- include/asm-m68k/global_data.h	Global data structure
+- include/asm-m68k/immap.h		ColdFire specific header file and driver macros
+- include/asm-m68k/immap_5227x.h	mcf5227x specific header file
+- include/asm-m68k/io.h			io functions
+- include/asm-m68k/lcd.h		LCD structure and definition
+- include/asm-m68k/m5227x.h		mcf5227x specific header file
+- include/asm-m68k/posix_types.h	Posix
+- include/asm-m68k/processor.h		header file
+- include/asm-m68k/ptrace.h		Exception structure
+- include/asm-m68k/rtc.h		Realtime clock header file
+- include/asm-m68k/ssi.h		SSI structure and definition
+- include/asm-m68k/string.h		String function export
+- include/asm-m68k/timer.h		Timer structure and definition
+- include/asm-m68k/types.h		Data types definition
+- include/asm-m68k/uart.h		Uart structure and definition
+- include/asm-m68k/u-boot.h		u-boot structure
+
+- include/configs/M52277EVB.h		Board specific configuration file
+
+- lib_m68k/board.c			board init function
+- lib_m68k/cache.c
+- lib_m68k/interrupts			Coldfire common interrupt functions
+- lib_m68k/m68k_linux.c
+- lib_m68k/time.c			Timer functions (Dma timer and PIT)
+- lib_m68k/traps.c			Exception init code
+
+1 MCF52277 specific Options/Settings
+====================================
+1.1 pre-loader is no longer suppoer in this coldfire family
+
+1.2 Configuration settings for M52277EVB Development Board
+CONFIG_MCF5227x		-- define for all MCF5227x CPUs
+CONFIG_M52277		-- define for all Freescale MCF52277 CPUs
+CONFIG_M52277EVB	-- define for M52277EVB board
+
+CONFIG_MCFUART		-- define to use common CF Uart driver
+CFG_UART_PORT		-- define UART port number, start with 0, 1 and 2
+CONFIG_BAUDRATE		-- define UART baudrate
+
+CONFIG_MCFRTC		-- define to use common CF RTC driver
+CFG_MCFRTC_BASE		-- provide base address for RTC in immap.h
+CFG_RTC_OSCILLATOR	-- define RTC clock frequency
+RTC_DEBUG		-- define to show RTC debug message
+CONFIG_CMD_DATE		-- enable to use date feature in u-boot
+
+CONFIG_MCFTMR		-- define to use DMA timer
+CONFIG_MCFPIT		-- define to use PIT timer
+
+CONFIG_FSL_I2C		-- define to use FSL common I2C driver
+CONFIG_HARD_I2C		-- define for I2C hardware support
+CONFIG_SOFT_I2C		-- define for I2C bit-banged
+CFG_I2C_SPEED		-- define for I2C speed
+CFG_I2C_SLAVE		-- define for I2C slave address
+CFG_I2C_OFFSET		-- define for I2C base address offset
+CFG_IMMR		-- define for MBAR offset
+
+CFG_MBAR		-- define MBAR offset
+
+CONFIG_MONITOR_IS_IN_RAM -- Not support
+
+CFG_INIT_RAM_ADDR	-- defines the base address of the MCF52277 internal SRAM
+
+CFG_CSn_BASE	-- defines the Chip Select Base register
+CFG_CSn_MASK	-- defines the Chip Select Mask register
+CFG_CSn_CTRL	-- defines the Chip Select Control register
+
+CFG_SDRAM_BASE	-- defines the DRAM Base
+
+CONFIG_LCD and CONFIG_CMD_USB are not supported in this current u-boot,
+update will be provided at later time
+
+2. MEMORY MAP UNDER U-BOOT AND LINUX KERNEL
+===========================================
+2.1. System memory map:
+	Flash:		0x00000000-0x3FFFFFFF (1024MB)
+	DDR:		0x40000000-0x7FFFFFFF (1024MB)
+	SRAM:		0x80000000-0x8FFFFFFF (256MB)
+	IP:		0xF0000000-0xFFFFFFFF (256MB)
+
+2.2. For the initial bringup, we adopted a consistent memory scheme between u-boot and
+	linux kernel, you can customize it based on your system requirements:
+	Flash0:		0x00000000-0x00FFFFFF (16MB)
+
+	DDR:		0x40000000-0x4FFFFFFF (64MB)
+	SRAM:		0x80000000-0x80007FFF (32KB)
+	IP:		0xFC000000-0xFC0FFFFF (64KB)
+
+3. COMPILATION
+==============
+3.1	To create U-Boot the gcc-4.1-xx compiler set (ColdFire ELF or
+uClinux version) from codesourcery.com was used. Download it from:
+http://www.codesourcery.com/gnu_toolchains/coldfire/download.html
+
+3.2 Compilation
+   export CROSS_COMPILE=cross-compile-prefix
+   cd u-boot-1.x.x
+   make distclean
+   make M52277EVB_config
+   make
+
+4. SCREEN DUMP
+==============
+4.1 M52277EVB Development board
+    (NOTE: May not show exactly the same)
+
+U-Boot 1.3.1 (Jan 8 2008 - 12:44:08)
+
+CPU:   Freescale MCF52277 (Mask:6c Version:0)
+       CPU CLK 160 Mhz BUS CLK 80 Mhz FLB CLK 80 MHZ
+       INP CLK 16 Mhz VCO CLK 480 Mhz
+Board: Freescale 52277 EVB
+I2C:   ready
+DRAM:  64 MB
+FLASH: 16 MB
+In:    serial
+Out:   serial
+Err:   serial
+-> print
+baudrate=115200
+hostname=M52277EVB
+inpclk=16000000
+loadaddr=(0x40000000 + 0x10000)
+load=tftp ${loadaddr) ${u-boot}
+upd=run load; run prog
+prog=prot off 0 3ffff;era 0 3ffff;cp.b ${loadaddr} 0 ${filesize};save
+u-boot=u-boot.bin
+stdin=serial
+stdout=serial
+stderr=serial
+mem=65024k
+
+Environment size: 280/32764 bytes
+-> bdinfo
+memstart    = 0x40000000
+memsize     = 0x04000000
+flashstart  = 0x00000000
+flashsize   = 0x01000000
+flashoffset = 0x00000000
+sramstart   = 0x80000000
+sramsize    = 0x00008000
+mbar        = 0xFC000000
+busfreq     =     80 MHz
+flbfreq     =     80 Mhz
+inpfreq     =     16 Mhz
+vcofreq     =    480 Mhz
+
+baudrate    = 115200 bps
+->
+-> help
+?       - alias for 'help'
+autoscr - run script from memory
+base    - print or set address offset
+bdinfo  - print Board Info structure
+boot    - boot default, i.e., run 'bootcmd'
+bootd   - boot default, i.e., run 'bootcmd'
+bootelf - Boot from an ELF image in memory
+bootm   - boot application image from memory
+bootp	- boot image via network using BootP/TFTP protocol
+bootvx  - Boot vxWorks from an ELF image
+cmp     - memory compare
+coninfo - print console devices and information
+cp      - memory copy
+crc32   - checksum calculation
+date    - get/set/reset date & time
+dcache  - enable or disable data cache
+echo    - echo args to console
+erase   - erase FLASH memory
+flinfo  - print FLASH memory information
+go      - start application at address 'addr'
+help    - print online help
+icache  - enable or disable instruction cache
+icrc32  - checksum calculation
+iloop   - infinite loop on address range
+imd     - i2c memory display
+iminfo  - print header information for application image
+imls    - list all images found in flash
+imm     - i2c memory modify (auto-incrementing)
+imw     - memory write (fill)
+inm     - memory modify (constant address)
+iprobe  - probe to discover valid I2C chip addresses
+itest	- return true/false on integer compare
+loadb   - load binary file over serial line (kermit mode)
+loads   - load S-Record file over serial line
+loady   - load binary file over serial line (ymodem mode)
+loop    - infinite loop on address range
+ls	- list files in a directory (default /)
+md      - memory display
+mm      - memory modify (auto-incrementing)
+mtest   - simple RAM test
+mw      - memory write (fill)
+nm      - memory modify (constant address)
+ping	- send ICMP ECHO_REQUEST to network host
+printenv- print environment variables
+protect - enable or disable FLASH write protection
+reset   - Perform RESET of the CPU
+run     - run commands in an environment variable
+saveenv - save environment variables to persistent storage
+setenv  - set environment variables
+sleep   - delay execution for some time
+version - print monitor version
+->
--- a/include/asm-m68k/global_data.h
+++ b/include/asm-m68k/global_data.h
@ -53,6 +53,9 @@ typedef	struct	global_data {
 	unsigned long	env_addr;	/* Address  of Environment struct	*/
 	unsigned long	env_valid;	/* Checksum of Environment valid?	*/
 	unsigned long	have_console;	/* serial_init() was called		*/
+#if defined(CONFIG_LCD) || defined(CONFIG_VIDEO)
+	unsigned long	fb_base;	/* Base addr of framebuffer memory */
+#endif
 #ifdef CONFIG_BOARD_TYPES
 	unsigned long	board_type;
 #endif
--- a/include/asm-m68k/immap.h
+++ b/include/asm-m68k/immap.h
@ -26,6 +26,40 @@
 #ifndef __IMMAP_H
 #define __IMMAP_H

+#ifdef CONFIG_M52277
+#include <asm/immap_5227x.h>
+#include <asm/m5227x.h>
+
+#define CFG_UART_BASE		(MMAP_UART0 + (CFG_UART_PORT * 0x4000))
+
+#define CFG_MCFRTC_BASE		(MMAP_RTC)
+
+#ifdef CONFIG_LCD
+#define	CFG_LCD_BASE		(MMAP_LCD)
+#endif
+
+/* Timer */
+#ifdef CONFIG_MCFTMR
+#define CFG_UDELAY_BASE		(MMAP_DTMR0)
+#define CFG_TMR_BASE		(MMAP_DTMR1)
+#define CFG_TMRPND_REG		(((volatile int0_t *)(CFG_INTR_BASE))->iprh0)
+#define CFG_TMRINTR_NO		(INT0_HI_DTMR1)
+#define CFG_TMRINTR_MASK	(INTC_IPRH_INT33)
+#define CFG_TMRINTR_PEND	(CFG_TMRINTR_MASK)
+#define CFG_TMRINTR_PRI		(6)
+#define CFG_TIMER_PRESCALER	(((gd->bus_clk / 1000000) - 1) << 8)
+#endif
+
+#ifdef CONFIG_MCFPIT
+#define CFG_UDELAY_BASE		(MMAP_PIT0)
+#define CFG_PIT_BASE		(MMAP_PIT1)
+#define CFG_PIT_PRESCALE	(6)
+#endif
+
+#define CFG_INTR_BASE		(MMAP_INTC0)
+#define CFG_NUM_IRQS		(128)
+#endif				/* CONFIG_M52277 */
+
 #ifdef CONFIG_M5235
 #include <asm/immap_5235.h>
 #include <asm/m5235.h>
--- a/include/configs/M52277EVB.h
+++ b/include/configs/M52277EVB.h
@ -0,0 +1,251 @@
+/*
+ * Configuation settings for the Freescale MCF52277 EVB board.
+ *
+ * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
+ * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
+ *
+ * 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
+ */
+
+/*
+ * board/config.h - configuration options, board specific
+ */
+
+#ifndef _M52277EVB_H
+#define _M52277EVB_H
+
+/*
+ * High Level Configuration Options
+ * (easy to change)
+ */
+#define CONFIG_MCF5227x		/* define processor family */
+#define CONFIG_M52277		/* define processor type */
+#define CONFIG_M52277EVB	/* M52277EVB board */
+
+#undef DEBUG
+
+#define CONFIG_MCFUART
+#define CFG_UART_PORT		(0)
+#define CONFIG_BAUDRATE		115200
+#define CFG_BAUDRATE_TABLE	{ 9600 , 19200 , 38400 , 57600, 115200 }
+
+#undef CONFIG_WATCHDOG
+
+#define CONFIG_TIMESTAMP	/* Print image info with timestamp */
+
+/*
+ * BOOTP options
+ */
+#define CONFIG_BOOTP_BOOTFILESIZE
+#define CONFIG_BOOTP_BOOTPATH
+#define CONFIG_BOOTP_GATEWAY
+#define CONFIG_BOOTP_HOSTNAME
+
+/* Command line configuration */
+#include <config_cmd_default.h>
+
+#define CONFIG_CMD_CACHE
+#define CONFIG_CMD_DATE
+#define CONFIG_CMD_ELF
+#define CONFIG_CMD_FLASH
+#define CONFIG_CMD_I2C
+#define CONFIG_CMD_JFFS2
+#define CONFIG_CMD_LOADB
+#define CONFIG_CMD_LOADS
+#define CONFIG_CMD_MEMORY
+#define CONFIG_CMD_MISC
+#undef CONFIG_CMD_NET
+#define CONFIG_CMD_REGINFO
+#undef CONFIG_CMD_USB
+#undef CONFIG_CMD_BMP
+
+#define CONFIG_HOSTNAME		M52277EVB
+#define CONFIG_EXTRA_ENV_SETTINGS		\
+	"inpclk=" MK_STR(CFG_INPUT_CLKSRC) "\0"	\
+	"loadaddr=" MK_STR(CFG_LOAD_ADDR) "\0"	\
+	"u-boot=u-boot.bin\0"			\
+	"load=tftp ${loadaddr) ${u-boot}\0"	\
+	"upd=run load; run prog\0"		\
+	"prog=prot off 0 0x3ffff;"		\
+	"era 0 3ffff;"				\
+	"cp.b ${loadaddr} 0 ${filesize};"	\
+	"save\0"				\
+	""
+
+/* LCD */
+#ifdef CONFIG_CMD_BMP
+#define CONFIG_LCD
+#define CONFIG_SPLASH_SCREEN
+#define CONFIG_LCD_LOGO
+#define CONFIG_SHARP_LQ035Q7DH06
+#endif
+
+/* USB */
+#ifdef CONFIG_CMD_USB
+#define CONFIG_USB_EHCI
+#define CONFIG_USB_STORAGE
+#define CONFIG_DOS_PARTITION
+#define CONFIG_MAC_PARTITION
+#define CONFIG_ISO_PARTITION
+#define CFG_USB_EHCI_REGS_BASE		0xFC0B0000
+#define CFG_USB_EHCI_CPU_INIT
+#endif
+
+/* Realtime clock */
+#define CONFIG_MCFRTC
+#undef RTC_DEBUG
+#define CFG_RTC_OSCILLATOR	(32 * CFG_HZ)
+
+/* Timer */
+#define CONFIG_MCFTMR
+#undef CONFIG_MCFPIT
+
+/* I2c */
+#define CONFIG_FSL_I2C
+#define CONFIG_HARD_I2C		/* I2C with hardware support */
+#undef	CONFIG_SOFT_I2C		/* I2C bit-banged               */
+#define CFG_I2C_SPEED		80000	/* I2C speed and slave address  */
+#define CFG_I2C_SLAVE		0x7F
+#define CFG_I2C_OFFSET		0x58000
+#define CFG_IMMR		CFG_MBAR
+
+/* Input, PCI, Flexbus, and VCO */
+#define CONFIG_EXTRA_CLOCK
+
+#define CFG_INPUT_CLKSRC	16000000
+
+#define CONFIG_PRAM		512	/* 512 KB */
+
+#define CFG_PROMPT		"-> "
+#define CFG_LONGHELP		/* undef to save memory */
+
+#if defined(CONFIG_CMD_KGDB)
+#define CFG_CBSIZE		1024	/* Console I/O Buffer Size */
+#else
+#define CFG_CBSIZE		256	/* Console I/O Buffer Size */
+#endif
+#define CFG_PBSIZE		(CFG_CBSIZE+sizeof(CFG_PROMPT)+16)	/* Print Buffer Size */
+#define CFG_MAXARGS		16	/* max number of command args */
+#define CFG_BARGSIZE		CFG_CBSIZE	/* Boot Argument Buffer Size    */
+
+#define CFG_LOAD_ADDR		(CFG_SDRAM_BASE + 0x10000)
+
+#define CFG_HZ			1000
+
+#define CFG_MBAR		0xFC000000
+
+/*
+ * Low Level Configuration Settings
+ * (address mappings, register initial values, etc.)
+ * You should know what you are doing if you make changes here.
+ */
+
+/*-----------------------------------------------------------------------
+ * Definitions for initial stack pointer and data area (in DPRAM)
+ */
+#define CFG_INIT_RAM_ADDR	0x80000000
+#define CFG_INIT_RAM_END	0x8000	/* End of used area in internal SRAM */
+#define CFG_INIT_RAM_CTRL	0x21
+#define CFG_GBL_DATA_SIZE	128	/* size in bytes reserved for initial data */
+#define CFG_GBL_DATA_OFFSET	((CFG_INIT_RAM_END - CFG_GBL_DATA_SIZE) - 16)
+#define CFG_INIT_SP_OFFSET	CFG_GBL_DATA_OFFSET
+
+/*-----------------------------------------------------------------------
+ * Start addresses for the final memory configuration
+ * (Set up by the startup code)
+ * Please note that CFG_SDRAM_BASE _must_ start at 0
+ */
+#define CFG_SDRAM_BASE		0x40000000
+#define CFG_SDRAM_SIZE		64	/* SDRAM size in MB */
+#define CFG_SDRAM_CFG1		0x43711630
+#define CFG_SDRAM_CFG2		0x56670000
+#define CFG_SDRAM_CTRL		0xE1092000
+#define CFG_SDRAM_EMOD		0x81810000
+#define CFG_SDRAM_MODE		0x00CD0000
+
+#define CFG_MEMTEST_START	CFG_SDRAM_BASE + 0x400
+#define CFG_MEMTEST_END		((CFG_SDRAM_SIZE - 3) << 20)
+
+#define CFG_MONITOR_BASE	(CFG_FLASH_BASE + 0x400)
+#define CFG_BOOTPARAMS_LEN	64*1024
+#define CFG_MONITOR_LEN		(256 << 10)	/* Reserve 256 kB for Monitor */
+#define CFG_MALLOC_LEN		(128 << 10)	/* Reserve 128 kB for malloc() */
+
+/* Initial Memory map for Linux */
+#define CFG_BOOTMAPSZ		(CFG_SDRAM_BASE + (CFG_SDRAM_SIZE << 20))
+
+/* Configuration for environment
+ * Environment is embedded in u-boot in the second sector of the flash
+ */
+#define CFG_ENV_IS_IN_FLASH	1
+#define CONFIG_ENV_OVERWRITE	1
+#undef CFG_ENV_IS_EMBEDDED
+
+/*-----------------------------------------------------------------------
+ * FLASH organization
+ */
+#define CFG_FLASH_BASE		CFG_CS0_BASE
+#define CFG_FLASH0_BASE		CFG_CS0_BASE
+#define CFG_ENV_ADDR		(CFG_FLASH_BASE + 0x8000)
+#define CFG_ENV_SECT_SIZE	0x8000
+
+#define CFG_FLASH_CFI
+#ifdef CFG_FLASH_CFI
+
+#	define CFG_FLASH_CFI_DRIVER	1
+#	define CFG_FLASH_SIZE		0x1000000	/* Max size that the board might have */
+#	define CFG_FLASH_CFI_WIDTH	FLASH_CFI_16BIT
+#	define CFG_MAX_FLASH_BANKS	1	/* max number of memory banks */
+#	define CFG_MAX_FLASH_SECT	137	/* max number of sectors on one chip */
+#	define CFG_FLASH_PROTECTION	/* "Real" (hardware) sectors protection */
+#	define CFG_FLASH_CHECKSUM
+#endif
+
+/*
+ * This is setting for JFFS2 support in u-boot.
+ * NOTE: Enable CONFIG_CMD_JFFS2 for JFFS2 support.
+ */
+#ifdef CONFIG_CMD_JFFS2
+#	define CONFIG_JFFS2_DEV		"nor0"
+#	define CONFIG_JFFS2_PART_SIZE	(0x01000000 - 0x40000)
+#	define CONFIG_JFFS2_PART_OFFSET	(CFG_FLASH0_BASE + 0x40000)
+#endif
+
+/*-----------------------------------------------------------------------
+ * Cache Configuration
+ */
+#define CFG_CACHELINE_SIZE		16
+
+/*-----------------------------------------------------------------------
+ * Memory bank definitions
+ */
+/*
+ * CS0 - NOR Flash
+ * CS1 - Available
+ * CS2 - Available
+ * CS3 - Available
+ * CS4 - Available
+ * CS5 - Available
+ */
+
+#define CFG_CS0_BASE		0x00000000
+#define CFG_CS0_MASK		0x00FF0001
+#define CFG_CS0_CTRL		0x00001FA0
+
+#endif				/* _M52277EVB_H */
--- a/lib_m68k/board.c
+++ b/lib_m68k/board.c
@ -313,6 +313,16 @@ board_init_f (ulong bootflag)
 	debug ("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
 #endif /* CONFIG_PRAM */

+	/* round down to next 4 kB limit */
+	addr &= ~(4096 - 1);
+	debug ("Top of RAM usable for U-Boot at: %08lx\n", addr);
+
+#ifdef CONFIG_LCD
+	/* reserve memory for LCD display (always full pages) */
+	addr = lcd_setmem (addr);
+	gd->fb_base = addr;
+#endif /* CONFIG_LCD */
+
 	/*
 	 * reserve memory for U-Boot code, data & bss
 	 * round down to next 4 kB limit