ppc4xx: Add GDsys PowerPC 440 ETX board support.

Board support for the Guntermann & Drunck PowerPC 440 ETX module.
Based on the AMCC Yosemite board support by Stefan Roese.

Signed-off-by: Dirk Eibach <eibach@gdsys.de>
Signed-off-by: Stefan Roese <sr@denx.de>

1 files changed, 75 insertions, 0 deletions

diff --git a/board/gdsys/gdppc440etx/init.S b/board/gdsys/gdppc440etx/init.S
new file mode 100644
index 0000000..0bbd45a
--- /dev/null
+++ b/board/gdsys/gdppc440etx/init.S
@@ -0,0 +1,75 @@
+/*
+* (C) Copyright 2008
+* Dirk Eibach,  Guntermann & Drunck GmbH, eibach@gdsys.de
+*
+* based on board/amcc/yosemite/init.S
+* original Copyright not specified there
+*
+* 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 <ppc_asm.tmpl>
+#include <config.h>
+
+#include <asm/mmu.h>
+
+/**************************************************************************
+ * TLB TABLE
+ *
+ * This table is used by the cpu boot code to setup the initial tlb
+ * entries. Rather than make broad assumptions in the cpu source tree,
+ * this table lets each board set things up however they like.
+ *
+ *  Pointer to the table is returned in r1
+ *
+ *************************************************************************/
+
+    .section .bootpg,"ax"
+    .globl tlbtab
+
+tlbtab:
+    tlbtab_start
+
+    /*
+     * BOOT_CS (FLASH) must be first. Before relocation SA_I can be off to use
+     * the speed up boot process. It is patched after relocation to enable SA_I
+     */
+    tlbentry( CONFIG_SYS_BOOT_BASE_ADDR, SZ_256M, CONFIG_SYS_BOOT_BASE_ADDR,
+	0, AC_R|AC_W|AC_X|SA_G/*|SA_I*/)
+
+    /* TLB-entry for init-ram in dcache (SA_I must be turned off!) */
+    tlbentry( CONFIG_SYS_INIT_RAM_ADDR, SZ_64K, CONFIG_SYS_INIT_RAM_ADDR,
+	0, AC_R|AC_W|AC_X|SA_G )
+
+    tlbentry( CONFIG_SYS_SDRAM_BASE, SZ_256M, CONFIG_SYS_SDRAM_BASE,
+	0, AC_R|AC_W|AC_X|SA_G|SA_I )
+    tlbentry( CONFIG_SYS_PCI_BASE, SZ_256M, CONFIG_SYS_PCI_BASE,
+	0, AC_R|AC_W|SA_G|SA_I )
+
+    /* PCI */
+    tlbentry( CONFIG_SYS_PCI_MEMBASE, SZ_256M, CONFIG_SYS_PCI_MEMBASE,
+	0, AC_R|AC_W|SA_G|SA_I )
+    tlbentry( CONFIG_SYS_PCI_MEMBASE1, SZ_256M, CONFIG_SYS_PCI_MEMBASE1,
+	0, AC_R|AC_W|SA_G|SA_I )
+    tlbentry( CONFIG_SYS_PCI_MEMBASE2, SZ_256M, CONFIG_SYS_PCI_MEMBASE2,
+	0, AC_R|AC_W|SA_G|SA_I )
+    tlbentry( CONFIG_SYS_PCI_MEMBASE3, SZ_256M, CONFIG_SYS_PCI_MEMBASE3,
+	0, AC_R|AC_W|SA_G|SA_I )
+
+    tlbtab_end