Add M5271EVB board support.

4 files changed, 335 insertions, 0 deletions

diff --git a/board/m5271evb/Makefile b/board/m5271evb/Makefile
new file mode 100644
index 0000000..34de983
--- /dev/null
+++ b/board/m5271evb/Makefile
@@ -0,0 +1,40 @@
+#
+# (C) Copyright 2000-2006
+# 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 $(TOPDIR)/config.mk
+
+LIB	= lib$(BOARD).a
+
+OBJS	= $(BOARD).o
+
+$(LIB):	.depend $(OBJS)
+	$(AR) crv $@ $(OBJS)
+
+#########################################################################
+
+.depend:	Makefile $(SOBJS:.o=.S) $(OBJS:.o=.c)
+		$(CC) -M $(CFLAGS) $(SOBJS:.o=.S) $(OBJS:.o=.c) > $@
+
+sinclude .depend
+
+#########################################################################
diff --git a/board/m5271evb/config.mk b/board/m5271evb/config.mk
new file mode 100644
index 0000000..9a7af7c
--- /dev/null
+++ b/board/m5271evb/config.mk
@@ -0,0 +1,25 @@
+#
+# (C) Copyright 2000-2006
+# 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 = 0xffe00000
diff --git a/board/m5271evb/m5271evb.c b/board/m5271evb/m5271evb.c
new file mode 100644
index 0000000..d364bd6
--- /dev/null
+++ b/board/m5271evb/m5271evb.c
@@ -0,0 +1,125 @@
+/*
+ * (C) Copyright 2000-2006
+ * 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 <common.h>
+#include <asm/m5271.h>
+#include <asm/immap_5271.h>
+
+int checkboard (void) {
+	puts ("Board: Freescale M5271EVB\n");
+	return 0;
+};
+
+long int initdram (int board_type) {
+
+	int i;
+
+	/* Enable Address lines 23-21 and lower 16bits of data path */
+	mbar_writeByte(MCF_GPIO_PAR_AD, MCF_GPIO_AD_ADDR23 |
+			MCF_GPIO_AD_ADDR22 | MCF_GPIO_AD_ADDR21 |
+			MCF_GPIO_AD_DATAL);
+
+	/* Set CS2 pin to be SD_CS0 */
+	mbar_writeByte(MCF_GPIO_PAR_CS, mbar_readByte(MCF_GPIO_PAR_CS)
+			| MCF_GPIO_PAR_CS_PAR_CS2);
+
+	/* Configure SDRAM Control Pin Assignemnt Register */
+	mbar_writeByte(MCF_GPIO_PAR_SDRAM, MCF_GPIO_SDRAM_CSSDCS_00 |
+			MCF_GPIO_SDRAM_SDWE | MCF_GPIO_SDRAM_SCAS |
+			MCF_GPIO_SDRAM_SRAS | MCF_GPIO_SDRAM_SCKE |
+			MCF_GPIO_SDRAM_SDCS_11);
+
+	/*
+	 * Check to see if the SDRAM has already been initialized
+	 * by a run control tool
+	 */
+	if (!(mbar_readLong(MCF_SDRAMC_DACR0) & MCF_SDRAMC_DACRn_RE))
+	{
+		/* Initialize DRAM Control Register: DCR */
+		mbar_writeShort(MCF_SDRAMC_DCR, 
+				MCF_SDRAMC_DCR_RTIM(0x01)
+				| MCF_SDRAMC_DCR_RC(0x30));
+
+		/*
+		 * Initialize DACR0
+		 *
+		 * CASL: 01
+		 * CBM: cmd at A20, bank select bits 21 and up
+		 * PS: 32bit port size
+		 */
+		mbar_writeLong(MCF_SDRAMC_DACR0,
+				MCF_SDRAMC_DACRn_BA(CFG_SDRAM_BASE>>18)
+				| MCF_SDRAMC_DACRn_CASL(1)
+				| MCF_SDRAMC_DACRn_CBM(3)
+				| MCF_SDRAMC_DACRn_PS(0));
+
+		/* Initialize DMR0 */
+		mbar_writeLong(MCF_SDRAMC_DMR0, 
+				MCF_SDRAMC_DMRn_BAM_16M
+				| MCF_SDRAMC_DMRn_V);
+
+		/* Set IP bit in DACR */
+		mbar_writeLong(MCF_SDRAMC_DACR0, mbar_readLong(MCF_SDRAMC_DACR0)
+				| MCF_SDRAMC_DACRn_IP);
+
+		/* Wait at least 20ns to allow banks to precharge */
+		for (i = 0; i < 5; i++)
+			asm(" nop");
+
+		/* Write to this block to initiate precharge */
+		*(u32 *)(CFG_SDRAM_BASE) = 0xa5a5a5a5;
+
+		/* Set RE bit in DACR */
+		mbar_writeLong(MCF_SDRAMC_DACR0, mbar_readLong(MCF_SDRAMC_DACR0)
+				| MCF_SDRAMC_DACRn_RE);
+
+		/* Wait for at least 8 auto refresh cycles to occur */
+		for (i = 0; i < 2000; i++)
+			asm(" nop");
+
+		/* Finish the configuration by issuing the MRS */
+		mbar_writeLong(MCF_SDRAMC_DACR0, mbar_readLong(MCF_SDRAMC_DACR0)
+				| MCF_SDRAMC_DACRn_MRS);
+
+		/*
+		 * Write to the SDRAM Mode Register A0-A11 = 0x400
+		 *
+		 * Write Burst Mode = Programmed Burst Length
+		 * Op Mode = Standard Op
+		 * CAS Latency = 2
+		 * Burst Type = Sequential
+		 * Burst Length = 1
+		 */
+		*(u32 *)(CFG_SDRAM_BASE + 0x400) = 0xa5a5a5a5;
+	}
+
+	return CFG_SDRAM_SIZE * 1024 * 1024;
+};
+
+int testdram (void) {
+
+	/* TODO: XXX XXX XXX */
+	printf ("DRAM test not implemented!\n");
+
+	return (0);
+}
diff --git a/board/m5271evb/u-boot.lds b/board/m5271evb/u-boot.lds
new file mode 100644
index 0000000..69f3179
--- /dev/null
+++ b/board/m5271evb/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;    */
+GROUP(libgcc.a)
+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/mcf52x2/start.o		(.text)
+    lib_m68k/traps.o		(.text)
+    cpu/mcf52x2/interrupts.o	(.text)
+    common/dlmalloc.o		(.text)
+    lib_generic/zlib.o		(.text)
+
+    . = DEFINED(env_offset) ? env_offset : .;
+    common/environment.o	(.ppcenv)
+
+    *(.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 = .);
+}