Initial support for MPC8641 HPCN board.

1 files changed, 172 insertions, 0 deletions

diff --git a/board/mpc8641hpcn/init.S b/board/mpc8641hpcn/init.S
new file mode 100644
index 0000000..9d43de5
--- /dev/null
+++ b/board/mpc8641hpcn/init.S
@@ -0,0 +1,172 @@
+/*
+ * Copyright 2004 Freescale Semiconductor.
+ * Jeff Brown (jeffrey@freescale.com)
+ * Srikanth Srinivasan (srikanth.srinivasan@freescale.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 <ppc_defs.h>
+#include <asm/cache.h>
+#include <asm/mmu.h>
+#include <config.h>
+#include <mpc86xx.h>
+
+/*
+ * LAW(Local Access Window) configuration:
+ *
+ * 0x0000_0000     0x7fff_ffff     DDR                     2G
+ * 0x8000_0000     0x9fff_ffff     PCI1 MEM                512M
+ * 0xa000_0000     0xbfff_ffff     PCI2 MEM                512M
+ * 0xc000_0000     0xdfff_ffff     RapidIO                 512M
+ * 0xe000_0000     0xe000_ffff     CCSR                    1M
+ * 0xe200_0000     0xe2ff_ffff     PCI1 IO                 16M
+ * 0xe300_0000     0xe3ff_ffff     PCI2 IO                 16M
+ * 0xf000_0000     0xf7ff_ffff     SDRAM                   128M
+ * 0xf800_0000     0xf80f_ffff     BCSR                    1M
+ * 0xfe00_0000     0xffff_ffff     FLASH (boot bank)       32M
+ *
+ * Notes:
+ *    CCSRBAR don't need a configured Local Access Window.
+ *    If flash is 8M at default position (last 8M), no LAW needed.
+ */
+
+#if !defined(CONFIG_SPD_EEPROM)
+#define LAWBAR1 ((CFG_DDR_SDRAM_BASE>>12) & 0xffffff)
+#define LAWAR1	(LAWAR_EN | LAWAR_TRGT_IF_DDR1 | (LAWAR_SIZE & LAWAR_SIZE_256M))
+#else
+#define LAWBAR1 0
+#define LAWAR1  ((LAWAR_TRGT_IF_DDR1 | (LAWAR_SIZE & LAWAR_SIZE_512M)) & ~LAWAR_EN)
+#endif
+
+#define LAWBAR2 ((CFG_PCI1_MEM_BASE>>12) & 0xffffff)
+#define LAWAR2	(LAWAR_EN | LAWAR_TRGT_IF_PCI1 | (LAWAR_SIZE & LAWAR_SIZE_512M))
+
+#define LAWBAR3 ((CFG_PCI2_MEM_BASE>>12) & 0xffffff)
+/*#define LAWAR3	(LAWAR_EN | LAWAR_TRGT_IF_PCI2 | (LAWAR_SIZE & LAWAR_SIZE_512M)) */
+#define LAWAR3	(~LAWAR_EN & (LAWAR_TRGT_IF_PCI2 | (LAWAR_SIZE & LAWAR_SIZE_512M)))
+
+/*
+ * This is not so much the SDRAM map as it is the whole localbus map.
+ */
+#define LAWBAR4 ((0xf8100000>>12) & 0xffffff)
+#define LAWAR4	(LAWAR_EN | LAWAR_TRGT_IF_LBC | (LAWAR_SIZE & LAWAR_SIZE_2M))
+
+#define LAWBAR5 ((CFG_PCI1_IO_BASE>>12) & 0xffffff)
+#define LAWAR5	(LAWAR_EN | LAWAR_TRGT_IF_PCI1 | (LAWAR_SIZE & LAWAR_SIZE_16M))
+
+#define LAWBAR6 ((CFG_PCI2_IO_BASE>>12) & 0xffffff)
+/*#define LAWAR6	(LAWAR_EN | LAWAR_TRGT_IF_PCI2 | (LAWAR_SIZE & LAWAR_SIZE_16M)) */
+#define LAWAR6	(~LAWAR_EN &( LAWAR_TRGT_IF_PCI2 | (LAWAR_SIZE & LAWAR_SIZE_16M)))
+
+ #define LAWBAR7 ((0xfe000000 >>12) & 0xffffff)
+ #define LAWAR7	(LAWAR_EN | LAWAR_TRGT_IF_LBC | (LAWAR_SIZE & LAWAR_SIZE_32M))
+
+
+/*
+ * Rapid IO at 0xc000_0000 for 512 M
+ */
+/*
+#ifdef CFG_INIT_RAM_LOCK
+#define LAWBAR7 ((CFG_RIO_MEM_BASE>>12) & 0xffffff)
+#define LAWAR7	(LAWAR_EN | LAWAR_TRGT_IF_RIO | (LAWAR_SIZE & LAWAR_SIZE_512M))
+#endif
+*/
+/*
+ * Stack at 0xfc00_0000 for 32M on LBC
+ */
+#if !defined(CFG_INIT_RAM_LOCK)
+#define LAWBAR7 ((CFG_INIT_RAM_ADDR>>12) & 0xffffff)
+#define LAWAR7 (LAWAR_EN | LAWAR_TRGT_IF_LBC | (LAWAR_SIZE & LAWAR_SIZE_32M))
+#endif
+
+      	.section .bootpg, "ax"
+	.globl	law_entry
+law_entry:
+	lis	r7,CFG_CCSRBAR@h
+	ori	r7,r7,CFG_CCSRBAR@l
+
+	addi    r4,r7,0
+	addi    r5,r7,0
+
+	/* Skip LAWAR0, start at LAWAR1 */
+	lis     r6,LAWBAR1@h
+	ori     r6,r6,LAWBAR1@l
+	stwu    r6, 0xc28(r4)
+
+	lis     r6,LAWAR1@h
+	ori     r6,r6,LAWAR1@l
+	stwu    r6, 0xc30(r5)
+
+	/* LAWBAR2, LAWAR2 */
+	lis     r6,LAWBAR2@h
+	ori     r6,r6,LAWBAR2@l
+	stwu    r6, 0x20(r4)
+
+	lis     r6,LAWAR2@h
+        ori     r6,r6,LAWAR2@l
+        stwu    r6, 0x20(r5)
+
+	/* LAWBAR3, LAWAR3 */
+	lis     r6,LAWBAR3@h
+	ori     r6,r6,LAWBAR3@l
+	stwu    r6, 0x20(r4)
+
+	lis     r6,LAWAR3@h
+	ori     r6,r6,LAWAR3@l
+	stwu    r6, 0x20(r5)
+
+	/* LAWBAR4, LAWAR4 */
+	lis     r6,LAWBAR4@h
+	ori     r6,r6,LAWBAR4@l
+	stwu    r6, 0x20(r4)
+
+        lis     r6,LAWAR4@h
+	ori     r6,r6,LAWAR4@l
+	stwu    r6, 0x20(r5)
+	/* LAWBAR5, LAWAR5 */
+	lis     r6,LAWBAR5@h
+	ori     r6,r6,LAWBAR5@l
+	stwu    r6, 0x20(r4)
+
+	lis     r6,LAWAR5@h
+	ori     r6,r6,LAWAR5@l
+	stwu    r6, 0x20(r5)
+
+	/* LAWBAR6, LAWAR6 */
+	lis     r6,LAWBAR6@h
+	ori     r6,r6,LAWBAR6@l
+	stwu    r6, 0x20(r4)
+
+	lis     r6,LAWAR6@h
+	ori     r6,r6,LAWAR6@l
+	stwu    r6, 0x20(r5)
+
+	/* LAWBAR7, LAWAR7 */
+	lis     r6,LAWBAR7@h
+	ori     r6,r6,LAWBAR7@l
+	stwu    r6, 0x20(r4)
+
+	lis     r6,LAWAR7@h
+	ori     r6,r6,LAWAR7@l
+	stwu    r6, 0x20(r5)
+
+	blr
+