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authorStefan Roese <sr@denx.de>2005-08-15 12:31:23 +0200
committerStefan Roese <sr@denx.de>2005-08-15 12:31:23 +0200
commitb79316f2a263f424e2a94abaa2c3f639fad7a864 (patch)
tree4d0db640a8221bffc6415c55a67f34561c97e693 /board/sandburst/metrobox/init.S
parent2893ecbf3e5b983970138289b759baf45a327ff3 (diff)
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Add Sandburst Metrobox and Sandburst Karef board support packages.
Second serial port on 440GX now defined as a system device. Add 'Short Etch' code for Cicada PHY within 440gx_enet.c Patch by Travis B. Sawyer, 12 Jul 2005 Check return value of malloc in 440gx_enet.c Patch by Travis B. Sawyer, 18 Jul 2005
Diffstat (limited to 'board/sandburst/metrobox/init.S')
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diff --git a/board/sandburst/metrobox/init.S b/board/sandburst/metrobox/init.S
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+/*
+* Copyright (C) 2005
+* Travis B. Sawyer, Sandburst Corporation, tsawyer@sandburst.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 <ppc_asm.tmpl>
+#include <config.h>
+
+/* General */
+#define TLB_VALID 0x00000200
+
+/* Supported page sizes */
+
+#define SZ_1K 0x00000000
+#define SZ_4K 0x00000010
+#define SZ_16K 0x00000020
+#define SZ_64K 0x00000030
+#define SZ_256K 0x00000040
+#define SZ_1M 0x00000050
+#define SZ_16M 0x00000070
+#define SZ_256M 0x00000090
+
+/* Storage attributes */
+#define SA_W 0x00000800 /* Write-through */
+#define SA_I 0x00000400 /* Caching inhibited */
+#define SA_M 0x00000200 /* Memory coherence */
+#define SA_G 0x00000100 /* Guarded */
+#define SA_E 0x00000080 /* Endian */
+
+/* Access control */
+#define AC_X 0x00000024 /* Execute */
+#define AC_W 0x00000012 /* Write */
+#define AC_R 0x00000009 /* Read */
+
+/* Some handy macros */
+
+#define EPN(e) ((e) & 0xfffffc00)
+#define TLB0(epn,sz) ( (EPN((epn)) | (sz) | TLB_VALID ) )
+#define TLB1(rpn,erpn) ( ((rpn)&0xfffffc00) | (erpn) )
+#define TLB2(a) ( (a)&0x00000fbf )
+
+#define tlbtab_start\
+ mflr r1 ;\
+ bl 0f ;
+
+#define tlbtab_end\
+ .long 0, 0, 0 ; \
+0: mflr r0 ; \
+ mtlr r1 ; \
+ blr ;
+
+#define tlbentry(epn,sz,rpn,erpn,attr)\
+ .long TLB0(epn,sz),TLB1(rpn,erpn),TLB2(attr)
+
+
+/**************************************************************************
+ * 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
+ tlbentry( 0xf0000000, SZ_256M, 0xf0000000, 1, AC_R|AC_W|AC_X|SA_G|SA_I)
+ tlbentry( CFG_PERIPHERAL_BASE, SZ_256M, 0x40000000, 1, AC_R|AC_W|SA_G|SA_I)
+ tlbentry( CFG_ISRAM_BASE, SZ_256K, 0x80000000, 0, AC_R|AC_W|AC_X|SA_G|SA_I)
+ tlbentry( CFG_SDRAM_BASE, SZ_256M, 0x00000000, 0, AC_R|AC_W|AC_X|SA_G|SA_I )
+ tlbentry( CFG_SDRAM_BASE+0x10000000, SZ_256M, 0x10000000, 0, AC_R|AC_W|AC_X|SA_G|SA_I )
+ tlbentry( CFG_SDRAM_BASE+0x20000000, SZ_256M, 0x20000000, 0, AC_R|AC_W|AC_X|SA_G|SA_I )
+ tlbentry( CFG_SDRAM_BASE+0x30000000, SZ_256M, 0x30000000, 0, AC_R|AC_W|AC_X|SA_G|SA_I )
+ tlbentry( CFG_PCI_BASE, SZ_256M, 0x00000000, 2, AC_R|AC_W|SA_G|SA_I )
+ tlbentry( CFG_PCI_MEMBASE, SZ_256M, 0x00000000, 3, AC_R|AC_W|SA_G|SA_I )
+ tlbtab_end