Add support for EmbeddedPlanet EP88x boards

Patch by Yuli Barcohen, 13 Jul 2005

4 files changed, 328 insertions, 0 deletions

diff --git a/board/ep88x/Makefile b/board/ep88x/Makefile
new file mode 100644
index 0000000..9123a80
--- /dev/null
+++ b/board/ep88x/Makefile
@@ -0,0 +1,46 @@
+#
+# Copyright (C) 2004 Arabella Software Ltd.
+# Yuli Barcohen <yuli@arabellasw.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 $(TOPDIR)/config.mk
+
+LIB	= lib$(BOARD).a
+
+OBJS	:= $(BOARD).o
+
+$(LIB):	$(OBJS) $(SOBJS)
+	$(AR) crv $@ $(OBJS)
+
+clean:
+	rm -f $(SOBJS) $(OBJS)
+
+distclean:	clean
+	rm -f $(LIB) core *.bak .depend
+
+#########################################################################
+
+.depend:	Makefile $(SOBJS:.o=.S) $(OBJS:.o=.c)
+		$(CC) -M $(CPPFLAGS) $(SOBJS:.o=.S) $(OBJS:.o=.c) > $@
+
+-include .depend
+
+#########################################################################
diff --git a/board/ep88x/config.mk b/board/ep88x/config.mk
new file mode 100644
index 0000000..72b326c
--- /dev/null
+++ b/board/ep88x/config.mk
@@ -0,0 +1,27 @@
+#
+# Copyright (C) 2005 Arabella Software Ltd.
+# Yuli Barcohen <yuli@arabellasw.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
+#
+
+#
+# Embedded Planet EP88x boards
+#
+TEXT_BASE = 0xFC000000
diff --git a/board/ep88x/ep88x.c b/board/ep88x/ep88x.c
new file mode 100644
index 0000000..5f57f36
--- /dev/null
+++ b/board/ep88x/ep88x.c
@@ -0,0 +1,133 @@
+/*
+ * Copyright (C) 2005 Arabella Software Ltd.
+ * Yuli Barcohen <yuli@arabellasw.com>
+ *
+ * Support for Embedded Planet EP88x boards.
+ * Tested on EP88xC with MPC885 CPU, 64MB SDRAM and 16MB flash.
+ *
+ * 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 <mpc8xx.h>
+
+/*
+ * SDRAM uses two Micron chips.
+ * Minimal CPU frequency is 40MHz.
+ */
+static uint sdram_table[] = {
+	/* Single read	(offset 0x00 in UPM RAM) */
+	0xEFCBCC04, 0x0F37C804, 0x0EEEC004, 0x01B98404,
+	0x1FF74C00, 0xFFFFCC05, 0xFFFFCC05, 0xFFFFCC05,
+
+	/* Burst read	(offset 0x08 in UPM RAM) */
+	0xEFCBCC04, 0x0F37C804, 0x0EEEC004, 0x00BDC404,
+	0x00FFCC00, 0x00FFCC00, 0x01FB8C00, 0x1FF74C00,
+	0xFFFFCC05, 0xFFFFCC05, 0xFFFFCC05, 0xFFFFCC05,
+	0xFFFFCC05, 0xFFFFCC05, 0xFFFFCC05, 0xFFFFCC05,
+
+	/* Single write (offset 0x18 in UPM RAM) */
+	0xEFCBCC04, 0x0F37C804, 0x0EEE8002, 0x01B90404,
+	0x1FF74C05, 0xFFFFCC05, 0xFFFFCC05, 0xFFFFCC05,
+
+	/* Burst write	(offset 0x20 in UPM RAM) */
+	0xEFCBCC04, 0x0F37C804, 0x0EEE8000, 0x00BD4400,
+	0x00FFCC00, 0x00FFCC02, 0x01FB8C04, 0x1FF74C05,
+	0xFFFFCC05, 0xFFFFCC05, 0xFFFFCC05, 0xFFFFCC05,
+	0xFFFFCC05, 0xFFFFCC05, 0xFFFFCC05, 0xFFFFCC05,
+
+	/* Refresh	(offset 0x30 in UPM RAM) */
+	0xEFFACC04, 0x0FF5CC04, 0x0FFFCC04, 0x1FFFCC04,
+	0xFFFFCC05, 0xFFFFCC05, 0xEFFB8C34, 0x0FF74C34,
+	0x0FFACCB4, 0x0FF5CC34, 0x0FFFC034, 0x0FFFC0B4,
+
+	/* Exception	(offset 0x3C in UPM RAM) */
+	0x0FEA8034, 0x1FB54034,	0xFFFFCC34, 0xFFFFCC05
+};
+
+int board_early_init_f (void)
+{
+	vu_char *bcsr = (vu_char *)CFG_BCSR;
+
+	bcsr[0] |= 0x0C; /* Turn the LEDs off */
+	bcsr[2] |= 0x08; /* Enable flash WE# line - necessary for
+			    flash detection by CFI driver
+			 */
+
+#if defined(CONFIG_8xx_CONS_SMC1)
+	bcsr[6] |= 0x10; /* Enables RS-232 transceiver */
+#endif
+#if defined(CONFIG_8xx_CONS_SCC2)
+	bcsr[7] |= 0x10; /* Enables RS-232 transceiver */
+#endif
+#ifdef CONFIG_ETHER_ON_FEC1
+	bcsr[8] |= 0xC0; /* Enable Ethernet 1 PHY */
+#endif
+#ifdef CONFIG_ETHER_ON_FEC2
+	bcsr[8] |= 0x30; /* Enable Ethernet 2 PHY */
+#endif
+
+	return 0;
+}
+
+long int initdram (int board_type)
+{
+	long int msize;
+	volatile immap_t     *immap  = (volatile immap_t *)CFG_IMMR;
+	volatile memctl8xx_t *memctl = &immap->im_memctl;
+
+	upmconfig(UPMA, sdram_table, sizeof(sdram_table) / sizeof(uint));
+
+	/* Configure SDRAM refresh */
+	memctl->memc_mptpr = MPTPR_PTP_DIV2; /* BRGCLK/2 */
+
+	memctl->memc_mamr = (65 << 24) | CFG_MAMR; /* No refresh */
+	udelay(100);
+
+	/* Run MRS pattern from location 0x36 */
+	memctl->memc_mar = 0x88;
+	memctl->memc_mcr = 0x80002236;
+	udelay(100);
+
+	memctl->memc_mamr |=  MAMR_PTAE; /* Enable refresh */
+	memctl->memc_or1   = ~(CFG_SDRAM_MAX_SIZE - 1) | OR_CSNT_SAM;
+	memctl->memc_br1   =  CFG_SDRAM_BASE | BR_PS_32 | BR_MS_UPMA | BR_V;
+
+	msize = get_ram_size(CFG_SDRAM_BASE, CFG_SDRAM_MAX_SIZE);
+	memctl->memc_or1  |= ~(msize - 1);
+
+	return msize;
+}
+
+int checkboard( void )
+{
+	vu_char *bcsr = (vu_char *)CFG_BCSR;
+
+	puts("Board: ");
+	switch (bcsr[15]) {
+	case 0xE7:
+		puts("EP88xC 1.0");
+		break;
+	default:
+		printf("unknown ID=%02X", bcsr[15]);
+	}
+	printf("  CPLD revision %d\n", bcsr[14]);
+
+	return 0;
+}
diff --git a/board/ep88x/u-boot.lds b/board/ep88x/u-boot.lds
new file mode 100644
index 0000000..1d2a7d7
--- /dev/null
+++ b/board/ep88x/u-boot.lds
@@ -0,0 +1,122 @@
+/*
+ * (C) Copyright 2001-2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * Modified by Yuli Barcohen <yuli@arabellasw.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
+ */
+
+OUTPUT_ARCH(powerpc)
+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          :
+  {
+    cpu/mpc8xx/start.o	(.text)
+    *(.text)
+    *(.fixup)
+    *(.got1)
+    . = ALIGN(16);
+    *(.rodata)
+    *(.rodata1)
+    *(.rodata.str1.4)
+  }
+  .fini      : { *(.fini)    } =0
+  .ctors     : { *(.ctors)   }
+  .dtors     : { *(.dtors)   }
+
+  /* Read-write section, merged into data segment: */
+  . = (. + 0x0FFF) & 0xFFFFF000;
+  _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(4096);
+  __init_begin = .;
+  .text.init : { *(.text.init) }
+  .data.init : { *(.data.init) }
+  . = ALIGN(4096);
+  __init_end = .;
+
+  __bss_start = .;
+  .bss       :
+  {
+   *(.sbss) *(.scommon)
+   *(.dynbss)
+   *(.bss)
+   *(COMMON)
+  }
+  _end = . ;
+  PROVIDE (end = .);
+}
+ENTRY(_start)