Add support for AMCC 440SP, add support for AMCC Luan 440SP eval board.
Patch by John Otken, 23 Nov 2005
diff --git a/board/amcc/luan/init.S b/board/amcc/luan/init.S
new file mode 100644
index 0000000..7830ebd
--- /dev/null
+++ b/board/amcc/luan/init.S
@@ -0,0 +1,132 @@
+/*
+*
+* 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
+
+#if (CFG_LARGE_FLASH == 0xffc00000) /* if booting from large flash */
+ /* large flash */
+ tlbentry( 0xffc00000, SZ_1M, 0xffc00000, 1, AC_R|AC_W|AC_X|SA_G|SA_I|SA_W )
+ tlbentry( 0xffd00000, SZ_1M, 0xffd00000, 1, AC_R|AC_W|AC_X|SA_G|SA_I|SA_W )
+ tlbentry( 0xffe00000, SZ_1M, 0xffe00000, 1, AC_R|AC_W|AC_X|SA_G|SA_I|SA_W )
+ tlbentry( 0xfff00000, SZ_1M, 0xfff00000, 1, AC_R|AC_W|AC_X|SA_G|SA_I|SA_W )
+
+ tlbentry( 0xff800000, SZ_1M, 0xff800000, 1, AC_R|AC_W|AC_X|SA_G/*|SA_I*/ )
+ tlbentry( 0xff900000, SZ_1M, 0xff900000, 1, AC_R|AC_W|AC_X|SA_G|SA_I|SA_W )
+#else /* else booting from small flash */
+ tlbentry( 0xffe00000, SZ_1M, 0xffe00000, 1, AC_R|AC_W|AC_X|SA_G/*|SA_I*/ )
+ tlbentry( 0xfff00000, SZ_1M, 0xfff00000, 1, AC_R|AC_W|AC_X|SA_G/*|SA_I*/ )
+
+ tlbentry( 0xff800000, SZ_1M, 0xff800000, 1, AC_R|AC_W|AC_X|SA_G/*|SA_I*/ )
+ tlbentry( 0xff900000, SZ_1M, 0xff900000, 1, AC_R|AC_W|AC_X|SA_G/*|SA_I*/ )
+ tlbentry( 0xffa00000, SZ_1M, 0xffa00000, 1, AC_R|AC_W|AC_X|SA_G/*|SA_I*/ )
+ tlbentry( 0xffb00000, SZ_1M, 0xffb00000, 1, AC_R|AC_W|AC_X|SA_G/*|SA_I*/ )
+#endif
+
+ tlbentry( CFG_EPLD_BASE, SZ_256K, 0xff000000, 1, AC_R|AC_W|SA_G|SA_I )
+
+#if (CFG_SRAM_BASE != 0) /* if SRAM up high and SDRAM at zero */
+ tlbentry( 0x00000000, SZ_256M, 0x00000000, 0, AC_R|AC_W|AC_X|SA_G|SA_I )
+ tlbentry( 0x10000000, SZ_256M, 0x10000000, 0, AC_R|AC_W|AC_X|SA_G|SA_I )
+#elif (CFG_SMALL_FLASH == 0xff900000) /* else SRAM at 0 */
+ tlbentry( 0x00000000, SZ_1M, 0xff800000, 1, AC_R|AC_W|AC_X|SA_G/*|SA_I*/ )
+#elif (CFG_SMALL_FLASH == 0xfff00000)
+ tlbentry( 0x00000000, SZ_1M, 0xffe00000, 1, AC_R|AC_W|AC_X|SA_G/*|SA_I*/ )
+#else
+ #error DONT KNOW SRAM LOCATION
+#endif
+
+ /* internal ram (l2 cache) */
+ tlbentry( CFG_ISRAM_BASE, SZ_256K, 0x80000000, 0, AC_R|AC_W|AC_X|SA_I )
+
+ /* peripherals at f0000000 */
+ tlbentry( CFG_PERIPHERAL_BASE, SZ_4K, CFG_PERIPHERAL_BASE, 1, AC_R|AC_W|SA_G|SA_I )
+
+ /* PCI */
+#if (CONFIG_COMMANDS & CFG_CMD_PCI)
+ tlbentry( CFG_PCI_BASE, SZ_256M, 0x00000000, 9, AC_R|AC_W|SA_G|SA_I )
+ tlbentry( CFG_PCI_MEMBASE, SZ_256M, 0x10000000, 9, AC_R|AC_W|SA_G|SA_I )
+#endif
+ tlbtab_end