Patch by Tolunay Orkun, 14 May 2004:

Add support for Cogent CSB472 board (8MB Flash Rev)

5 files changed, 591 insertions, 0 deletions

diff --git a/board/csb472/Makefile b/board/csb472/Makefile
new file mode 100644
index 0000000000..926e065032
--- /dev/null
+++ b/board/csb472/Makefile
@@ -0,0 +1,51 @@
+#
+# (C) Copyright 2000-2004
+# 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 flash.o
+#OBJS	= $(BOARD).o strataflash.o
+OBJS	= $(BOARD).o
+
+SOBJS	= init.o
+
+
+$(LIB):	$(OBJS) $(SOBJS)
+	$(AR) crv $@ $^
+
+clean:
+	rm -f $(SOBJS) $(OBJS)
+
+distclean:	clean
+	rm -f $(LIB) core *.bak .depend
+
+#########################################################################
+
+.depend:	Makefile $(SOBJS:.o=.S) $(OBJS:.o=.c)
+		$(CC) -M $(CFLAGS) $(SOBJS:.o=.S) $(OBJS:.o=.c) > $@
+
+sinclude .depend
+
+#########################################################################
diff --git a/board/csb472/config.mk b/board/csb472/config.mk
new file mode 100644
index 0000000000..04aefd1f82
--- /dev/null
+++ b/board/csb472/config.mk
@@ -0,0 +1,36 @@
+#
+# (C) Copyright 2000-2004
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# (C) Copyright 2004
+# Tolunay Orkun, NextIO Inc., torkun@nextio.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
+#
+
+#
+# Cogent CSB472 board
+#
+
+LDFLAGS += $(LINKER_UNDEFS)
+
+TEXT_BASE := 0xFFFC0000
+#TEXT_BASE := 0x00100000
+
+PLATFORM_RELFLAGS := $(PLATFORM_RELFLAGS)
diff --git a/board/csb472/csb472.c b/board/csb472/csb472.c
new file mode 100644
index 0000000000..97de0fd9af
--- /dev/null
+++ b/board/csb472/csb472.c
@@ -0,0 +1,141 @@
+/*
+ * (C) Copyright 2004
+ * Tolunay Orkun, Nextio Inc., torkun@nextio.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/processor.h>
+#include <i2c.h>
+#include <miiphy.h>
+#include <405gp_enet.h>
+
+/*
+ * board_early_init_f: do early board initialization
+ *
+ */
+int board_early_init_f(void)
+{
+   /*-------------------------------------------------------------------------+
+   | Interrupt controller setup for the Walnut board.
+   | Note: IRQ 0-15  405GP internally generated; active high; level sensitive
+   |       IRQ 16    405GP internally generated; active low; level sensitive
+   |       IRQ 17-24 RESERVED
+   |       IRQ 25 (EXT IRQ 0) FPGA; active high; level sensitive
+   |       IRQ 26 (EXT IRQ 1) SMI; active high; level sensitive
+   |       IRQ 27 (EXT IRQ 2) Not Used
+   |       IRQ 28 (EXT IRQ 3) PCI SLOT 3; active low; level sensitive
+   |       IRQ 29 (EXT IRQ 4) PCI SLOT 2; active low; level sensitive
+   |       IRQ 30 (EXT IRQ 5) PCI SLOT 1; active low; level sensitive
+   |       IRQ 31 (EXT IRQ 6) PCI SLOT 0; active low; level sensitive
+   | Note for Walnut board:
+   |       An interrupt taken for the FPGA (IRQ 25) indicates that either
+   |       the Mouse, Keyboard, IRDA, or External Expansion caused the
+   |       interrupt. The FPGA must be read to determine which device
+   |       caused the interrupt. The default setting of the FPGA clears
+   |
+   +-------------------------------------------------------------------------*/
+
+	mtdcr (uicsr, 0xFFFFFFFF);   /* clear all ints */
+	mtdcr (uicer, 0x00000000);   /* disable all ints */
+	mtdcr (uiccr, 0x00000000);   /* set all to be non-critical */
+	mtdcr (uicpr, 0xFFFFFF83);   /* set int polarities */
+	mtdcr (uictr, 0x10000000);   /* set int trigger levels */
+	mtdcr (uicvcr, 0x00000001);  /* set vect base=0,INT0 highest priority */
+	mtdcr (uicsr, 0xFFFFFFFF);   /* clear all ints */
+
+	mtebc (epcr, 0xa8400000);   /* EBC always driven */
+
+	return 0; /* success */
+}
+
+/*
+ * checkboard: identify/verify the board we are running
+ *
+ * Remark: we just assume it is correct board here!
+ *
+ */
+int checkboard(void)
+{
+	printf("BOARD: Cogent CSB472\n");
+
+	return 0; /* success */
+}
+
+/*
+ * initram: Determine the size of mounted DRAM
+ *
+ * Size is determined by reading SDRAM configuration registers as
+ * configured by initialization code
+ *
+ */
+long initdram (int board_type)
+{
+	ulong tot_size;
+	ulong bank_size;
+	ulong tmp;
+
+	tot_size = 0;
+
+	mtdcr (memcfga, mem_mb0cf);
+	tmp = mfdcr (memcfgd);
+	if (tmp & 0x00000001) {
+		bank_size = 0x00400000 << ((tmp >> 17) & 0x7);
+		tot_size += bank_size;
+	}
+
+	mtdcr (memcfga, mem_mb1cf);
+	tmp = mfdcr (memcfgd);
+	if (tmp & 0x00000001) {
+		bank_size = 0x00400000 << ((tmp >> 17) & 0x7);
+		tot_size += bank_size;
+	}
+
+	mtdcr (memcfga, mem_mb2cf);
+	tmp = mfdcr (memcfgd);
+	if (tmp & 0x00000001) {
+		bank_size = 0x00400000 << ((tmp >> 17) & 0x7);
+		tot_size += bank_size;
+	}
+
+	mtdcr (memcfga, mem_mb3cf);
+	tmp = mfdcr (memcfgd);
+	if (tmp & 0x00000001) {
+		bank_size = 0x00400000 << ((tmp >> 17) & 0x7);
+		tot_size += bank_size;
+	}
+
+	return tot_size;
+}
+
+/*
+ * last_stage_init: final configurations (such as PHY etc)
+ *
+ */
+int last_stage_init(void)
+{
+	/* initialize the PHY */
+	miiphy_reset(CONFIG_PHY_ADDR);
+	miiphy_write(CONFIG_PHY_ADDR, PHY_BMCR,
+			PHY_BMCR_AUTON | PHY_BMCR_RST_NEG);	/* AUTO neg */
+	miiphy_write(CONFIG_PHY_ADDR, PHY_FCSCR, 0x0d08);	/* LEDs     */
+
+	return 0; /* success */
+}
diff --git a/board/csb472/init.S b/board/csb472/init.S
new file mode 100644
index 0000000000..ca0241bd8a
--- /dev/null
+++ b/board/csb472/init.S
@@ -0,0 +1,212 @@
+/******************************************************************************
+ *
+ *	 This source code has been made available to you by IBM on an AS-IS
+ *	 basis.	 Anyone receiving this source is licensed under IBM
+ *	 copyrights to use it in any way he or she deems fit, including
+ *	 copying it, modifying it, compiling it, and redistributing it either
+ *	 with or without modifications.	 No license under IBM patents or
+ *	 patent applications is to be implied by the copyright license.
+ *
+ *	 Any user of this software should understand that IBM cannot provide
+ *	 technical support for this software and will not be responsible for
+ *	 any consequences resulting from the use of this software.
+ *
+ *	 Any person who transfers this source code or any derivative work
+ *	 must include the IBM copyright notice, this paragraph, and the
+ *	 preceding two paragraphs in the transferred software.
+ *
+ *	 COPYRIGHT   I B M   CORPORATION 1995
+ *	 LICENSED MATERIAL  -  PROGRAM PROPERTY OF I B M
+ *
+ *****************************************************************************/
+#include <config.h>
+#include <ppc4xx.h>
+
+#define _LINUX_CONFIG_H 1	/* avoid reading Linux autoconf.h file	*/
+
+#include <ppc_asm.tmpl>
+#include <ppc_defs.h>
+
+#include <asm/cache.h>
+#include <asm/mmu.h>
+
+#define LI32(reg,val) \
+	addis   reg,0,val@h;\
+	ori     reg,reg,val@l
+
+#define WDCR_EBC(reg,val) \
+	addi    r4,0,reg;\
+	mtdcr   ebccfga,r4;\
+	addis   r4,0,val@h;\
+	ori     r4,r4,val@l;\
+	mtdcr   ebccfgd,r4
+
+#define WDCR_SDRAM(reg,val) \
+	addi    r4,0,reg;\
+	mtdcr   memcfga,r4;\
+	addis   r4,0,val@h;\
+	ori     r4,r4,val@l;\
+	mtdcr   memcfgd,r4
+
+/******************************************************************************
+ * Function:	ext_bus_cntlr_init
+ *
+ * Description:	Configures EBC Controller and a few basic chip selects.
+ *
+ *		CS0 is setup to get the Boot Flash out of the addresss range
+ *		so that we may setup a stack.  CS7 is setup so that we can
+ *		access and reset the hardware watchdog.
+ *
+ *		IMPORTANT: For pass1 this code must run from
+ *		cache since you can not reliably change a peripheral banks
+ *		timing register (pbxap) while running code from that bank.
+ *		For ex., since we are running from ROM on bank 0, we can NOT
+ *		execute the code that modifies bank 0 timings from ROM, so
+ *		we run it from cache.
+ *
+ * Notes:	Does NOT use the stack.
+ *****************************************************************************/
+	.section ".text"
+	.align	2
+	.globl	ext_bus_cntlr_init
+	.type	ext_bus_cntlr_init, @function
+ext_bus_cntlr_init:
+	mflr	r0
+	/********************************************************************
+	 * Prefetch entire ext_bus_cntrl_init function into the icache.
+	 * This is necessary because we are going to change the same CS we
+	 * are executing from.  Otherwise a CPU lockup may occur.
+	 *******************************************************************/
+	bl	..getAddr
+..getAddr:
+	mflr	r3			/* get address of ..getAddr */
+
+	/* Calculate number of cache lines for this function */
+	addi	r4, 0, (((.Lfe0 - ..getAddr) / CFG_CACHELINE_SIZE) + 2)
+	mtctr	r4
+..ebcloop:
+	icbt	r0, r3			/* prefetch cache line for addr in r3*/
+	addi	r3, r3, CFG_CACHELINE_SIZE /* move to next cache line */
+	bdnz	..ebcloop		/* continue for $CTR cache lines */
+
+	/********************************************************************
+	 * Delay to ensure all accesses to ROM are complete before changing
+	 * bank 0 timings. 200usec should be enough.
+	 * 200,000,000 (cycles/sec) X .000200 (sec) = 0x9C40 cycles.
+	 *******************************************************************/
+	addis	r3, 0, 0x0
+	ori	r3, r3, 0xA000		/* wait 200us from reset */
+	mtctr	r3
+..spinlp:
+	bdnz	..spinlp		/* spin loop */
+
+	/********************************************************************
+	 * SETUP CPC0_CR0
+	 *******************************************************************/
+	LI32(r4, 0x00c01030)
+	mtdcr	cntrl0, r4
+
+	/********************************************************************
+	 * Setup CPC0_CR1: Change PCIINT signal to PerWE
+	 *******************************************************************/
+	mfdcr	r4, cntrl1
+	ori	r4, r4, 0x4000
+	mtdcr	cntrl1, r4
+
+	/********************************************************************
+	 * Setup External Bus Controller (EBC).
+	 *******************************************************************/
+	WDCR_EBC(epcr, 0xd84c0000)
+	/********************************************************************
+	 * Memory Bank 0 (Intel 28F640J3 Flash) initialization
+	 *******************************************************************/
+	/*WDCR_EBC(pb0ap, 0x03055200)*/
+	/*WDCR_EBC(pb0ap, 0x04055200)*/
+	WDCR_EBC(pb0ap, 0x08055200)
+	WDCR_EBC(pb0cr, 0xff87a000)
+	/********************************************************************
+	 * Memory Bank 3 (Xilinx XC95144 CPLD) initialization
+	 *******************************************************************/
+	/*WDCR_EBC(pb3ap, 0x07869200)*/
+	WDCR_EBC(pb3ap, 0x04055200)
+	WDCR_EBC(pb3cr, 0xff01c000)
+	/********************************************************************
+	 * Memory Bank 1,2,4-7 (Unused) initialization
+	 *******************************************************************/
+	WDCR_EBC(pb1ap, 0)
+	WDCR_EBC(pb1cr, 0)
+	WDCR_EBC(pb2ap, 0)
+	WDCR_EBC(pb2cr, 0)
+	WDCR_EBC(pb4ap, 0)
+	WDCR_EBC(pb4cr, 0)
+	WDCR_EBC(pb5ap, 0)
+	WDCR_EBC(pb5cr, 0)
+	WDCR_EBC(pb6ap, 0)
+	WDCR_EBC(pb6cr, 0)
+	WDCR_EBC(pb7ap, 0)
+	WDCR_EBC(pb7cr, 0)
+
+	/* We are all done */
+	mtlr	r0			/* Restore link register */
+	blr				/* Return to calling function */
+.Lfe0:	.size	ext_bus_cntlr_init,.Lfe0-ext_bus_cntlr_init
+/* end ext_bus_cntlr_init() */
+
+/******************************************************************************
+ * Function:	sdram_init
+ *
+ * Description:	Configures SDRAM memory banks.
+ *
+ * Notes:	Does NOT use the stack.
+ *****************************************************************************/
+	.section ".text"
+	.align	2
+	.globl	sdram_init
+	.type	sdram_init, @function
+sdram_init:
+
+	/*
+	 * Disable memory controller to allow
+	 * values to be changed.
+	 */
+	WDCR_SDRAM(mem_mcopt1, 0x00000000)
+
+	/*
+	 * Configure Memory Banks
+	 */
+	WDCR_SDRAM(mem_mb0cf, 0x00062001)
+	WDCR_SDRAM(mem_mb1cf, 0x00000000)
+	WDCR_SDRAM(mem_mb2cf, 0x00000000)
+	WDCR_SDRAM(mem_mb3cf, 0x00000000)
+
+	/*
+	 * Set up SDTR1 (SDRAM Timing Register)
+	 */
+	WDCR_SDRAM(mem_sdtr1, 0x00854009)
+
+	/*
+	 * Set RTR (Refresh Timing Register)
+	 */
+	WDCR_SDRAM(mem_rtr,   0x10000000)
+	/* WDCR_SDRAM(mem_rtr,   0x05f00000) */
+
+	/********************************************************************
+	 * Delay to ensure 200usec have elapsed since reset. Assume worst
+	 * case that the core is running 200Mhz:
+	 *	  200,000,000 (cycles/sec) X .000200 (sec) = 0x9C40 cycles
+	 *******************************************************************/
+	addis   r3, 0, 0x0000
+	ori     r3, r3, 0xA000		/* Wait >200us from reset */
+	mtctr   r3
+..spinlp2:
+	bdnz    ..spinlp2		/* spin loop */
+
+	/********************************************************************
+	 * Set memory controller options reg, MCOPT1.
+	 *******************************************************************/
+	WDCR_SDRAM(mem_mcopt1,0x80800000)
+
+..sdri_done:
+	blr				/* Return to calling function */
+.Lfe1:	.size	sdram_init,.Lfe1-sdram_init
+/* end sdram_init() */
diff --git a/board/csb472/u-boot.lds b/board/csb472/u-boot.lds
new file mode 100644
index 0000000000..f3e28ae8d8
--- /dev/null
+++ b/board/csb472/u-boot.lds
@@ -0,0 +1,151 @@
+/*
+ * (C) Copyright 2000-2004
+ * 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(powerpc)
+SEARCH_DIR(/lib); SEARCH_DIR(/usr/lib); SEARCH_DIR(/usr/local/lib); SEARCH_DIR(/usr/local/powerpc-any-elf/lib);
+/* Do we need any of these for elf?
+   __DYNAMIC = 0;    */
+SECTIONS
+{
+  .resetvec 0xFFFFFFFC :
+  {
+    *(.resetvec)
+  } = 0xffff
+
+  /* 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/ppc4xx/start.o	(.text)
+    board/csb472/init.o	(.text)
+    cpu/ppc4xx/kgdb.o	(.text)
+    cpu/ppc4xx/traps.o	(.text)
+    cpu/ppc4xx/interrupts.o	(.text)
+    cpu/ppc4xx/serial.o	(.text)
+    cpu/ppc4xx/cpu_init.o	(.text)
+    cpu/ppc4xx/speed.o	(.text)
+    cpu/ppc4xx/405gp_enet.o	(.text)
+    common/dlmalloc.o	(.text)
+    lib_generic/crc32.o		(.text)
+
+    lib_ppc/extable.o	(.text)
+    lib_ppc/board.o	(.text)
+    lib_generic/zlib.o	(.text)
+/*    . = env_offset;*/
+/*    common/environment.o(.text)*/
+
+    *(.text)
+    *(.fixup)
+    *(.got1)
+  }
+  _etext = .;
+  PROVIDE (etext = .);
+  .rodata    :
+  {
+    *(.rodata)
+    *(.rodata1)
+    *(.rodata.str1.4)
+  }
+  .fini      : { *(.fini)    } =0
+  .ctors     : { *(.ctors)   }
+  .dtors     : { *(.dtors)   }
+
+  /* Read-write section, merged into data segment: */
+  . = (. + 0x00FF) & 0xFFFFFF00;
+  _erotext = .;
+  PROVIDE (erotext = .);
+  .reloc   :
+  {
+    *(.got)
+    _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) *(.scommon)
+   *(.dynbss)
+   *(.bss)
+   *(COMMON)
+  }
+  _end = . ;
+  PROVIDE (end = .);
+}