Merge: Add support for AMCC 440SPe CPU based eval board (Yucca).

1 files changed, 105 insertions, 0 deletions

diff --git a/board/amcc/yucca/init.S b/board/amcc/yucca/init.S
new file mode 100644
index 0000000..8cf2636
--- /dev/null
+++ b/board/amcc/yucca/init.S
@@ -0,0 +1,105 @@
+/*
+ *  Copyright (C) 2002 Scott McNutt <smcnutt@artesyncp.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
+ */
+/* port to AMCC 440SPE evaluatioon board - SG April 12,2005  */
+
+#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(0xfff00000, SZ_16M, 0xfff00000, 4, AC_R|AC_W|AC_X|SA_G)
+
+	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_ISRAM_BASE, SZ_256K, 0x00000000, 4, AC_R|AC_W|AC_X|SA_I)
+	tlbentry(CFG_FPGA_BASE,SZ_1K, 0xE2000000, 4,AC_R|AC_W|SA_I)
+
+	tlbentry(CFG_OPER_FLASH,SZ_16M,0xE7000000, 4,AC_R|AC_W|AC_X|SA_G|SA_I)
+	tlbentry(CFG_PERIPHERAL_BASE, SZ_4K, 0xF0000000, 4, AC_R|AC_W|SA_G|SA_I)
+
+	tlbentry(CFG_PCI_BASE, SZ_256M, 0x00000000, 0xC, AC_R|AC_W|SA_G|SA_I)
+	tlbentry(CFG_PCI_MEMBASE, SZ_256M, 0x10000000, 0xC, AC_R|AC_W|SA_G|SA_I)
+	tlbtab_end
+