summaryrefslogtreecommitdiff
path: root/board/gdsys/gdppc440etx/init.S
diff options
context:
space:
mode:
authorDirk Eibach <eibach@gdsys.de>2008-12-09 13:12:40 +0100
committerStefan Roese <sr@denx.de>2009-01-26 10:13:30 +0100
commit89b8619aaeafc922ca0c3bb249872591050c8dcc (patch)
tree7e8fdcec01e0d1d15bcd034a6b8be18a9c0b6277 /board/gdsys/gdppc440etx/init.S
parent3943d2ff6cc40dd601a9feeb39eb6d3d5090ea6d (diff)
downloadu-boot-imx-89b8619aaeafc922ca0c3bb249872591050c8dcc.zip
u-boot-imx-89b8619aaeafc922ca0c3bb249872591050c8dcc.tar.gz
u-boot-imx-89b8619aaeafc922ca0c3bb249872591050c8dcc.tar.bz2
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>
Diffstat (limited to 'board/gdsys/gdppc440etx/init.S')
-rw-r--r--board/gdsys/gdppc440etx/init.S75
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