1 files changed, 241 insertions, 0 deletions
diff --git a/board/sbc8548/init.S b/board/sbc8548/init.S
new file mode 100644
index 000000000..cafa214fd
--- /dev/null
+++ b/board/sbc8548/init.S
@@ -0,0 +1,241 @@
+/*
+ * Copyright 2007 Wind River Systemes, Inc. <www.windriver.com>
+ * Copyright 2007 Embedded Specialties, Inc.
+ *
+ * Copyright 2004 Freescale Semiconductor.
+ * Copyright 2002,2003, Motorola Inc.
+ *
+ * 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 <mpc85xx.h>
+
+
+/*
+ * TLB0 and TLB1 Entries
+ *
+ * Out of reset, TLB1's Entry 0 maps the highest 4K for CCSRBAR.
+ * However, CCSRBAR is then relocated to CFG_CCSRBAR right after
+ * these TLB entries are established.
+ *
+ * The TLB entries for DDR are dynamically setup in spd_sdram()
+ * and use TLB1 Entries 8 through 15 as needed according to the
+ * size of DDR memory.
+ *
+ * MAS0: tlbsel, esel, nv
+ * MAS1: valid, iprot, tid, ts, tsize
+ * MAS2: epn, x0, x1, w, i, m, g, e
+ * MAS3: rpn, u0-u3, ux, sx, uw, sw, ur, sr
+ */
+
+#define	entry_start \
+	mflr	r1 	;	\
+	bl	0f 	;
+
+#define	entry_end \
+0:	mflr	r0	;	\
+	mtlr	r1	;	\
+	blr		;
+
+	.section	.bootpg, "ax"
+	.globl	tlb1_entry
+
+tlb1_entry:
+	entry_start
+
+	/*
+	 * Number of TLB0 and TLB1 entries in the following table
+	 */
+	.long 13
+
+#if (CFG_CCSRBAR_DEFAULT != CFG_CCSRBAR)
+	/*
+	 * TLB0		4K	Non-cacheable, guarded
+	 * 0xff700000	4K	Initial CCSRBAR mapping
+	 *
+	 * This ends up at a TLB0 Index==0 entry, and must not collide
+	 * with other TLB0 Entries.
+	 */
+	.long FSL_BOOKE_MAS0(0, 0, 0)
+	.long FSL_BOOKE_MAS1(1, 0, 0, 0, 0)
+	.long FSL_BOOKE_MAS2(CFG_CCSRBAR_DEFAULT, (MAS2_I|MAS2_G))
+	.long FSL_BOOKE_MAS3(CFG_CCSRBAR_DEFAULT, 0, (MAS3_SX|MAS3_SW|MAS3_SR))
+#else
+#error("Update the number of table entries in tlb1_entry")
+#endif
+
+	/*
+	 * TLB0		16K	Cacheable, non-guarded
+	 * 0xe4010000	16K	Temporary Global data for initialization
+	 *
+	 * Use four 4K TLB0 entries.  These entries must be cacheable
+	 * as they provide the bootstrap memory before the memory
+	 * controler and real memory have been configured.
+	 *
+	 * These entries end up at TLB0 Indicies 0x10, 0x14, 0x18 and 0x1c,
+	 * and must not collide with other TLB0 entries.
+	 */
+	.long FSL_BOOKE_MAS0(0, 0, 0)
+	.long FSL_BOOKE_MAS1(1, 0, 0, 0, 0)
+	.long FSL_BOOKE_MAS2(CFG_INIT_RAM_ADDR, 0)
+	.long FSL_BOOKE_MAS3(CFG_INIT_RAM_ADDR, 0, (MAS3_SX|MAS3_SW|MAS3_SR))
+
+	.long FSL_BOOKE_MAS0(0, 0, 0)
+	.long FSL_BOOKE_MAS1(1, 0, 0, 0, 0)
+	.long FSL_BOOKE_MAS2(CFG_INIT_RAM_ADDR + 4 * 1024, 0)
+	.long FSL_BOOKE_MAS3(CFG_INIT_RAM_ADDR + 4 * 1024, 0,
+			(MAS3_SX|MAS3_SW|MAS3_SR))
+
+	.long FSL_BOOKE_MAS0(0, 0, 0)
+	.long FSL_BOOKE_MAS1(1, 0, 0, 0, 0)
+	.long FSL_BOOKE_MAS2(CFG_INIT_RAM_ADDR + 8 * 1024, 0)
+	.long FSL_BOOKE_MAS3(CFG_INIT_RAM_ADDR + 8 * 1024, 0,
+			(MAS3_SX|MAS3_SW|MAS3_SR))
+
+	.long FSL_BOOKE_MAS0(0, 0, 0)
+	.long FSL_BOOKE_MAS1(1, 0, 0, 0, 0)
+	.long FSL_BOOKE_MAS2(CFG_INIT_RAM_ADDR + 12 * 1024, 0)
+	.long FSL_BOOKE_MAS3(CFG_INIT_RAM_ADDR + 12 * 1024, 0,
+			(MAS3_SX|MAS3_SW|MAS3_SR))
+
+	/*
+	 * TLB 0:	16M	Non-cacheable, guarded
+	 * 0xff800000	16M	TLB for 8MB FLASH
+	 * Out of reset this entry is only 4K.
+	 */
+	.long FSL_BOOKE_MAS0(1, 0, 0)
+	.long FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_16M)
+	.long FSL_BOOKE_MAS2(CFG_FLASH_BASE, (MAS2_I|MAS2_G))
+	.long FSL_BOOKE_MAS3(CFG_FLASH_BASE, 0, (MAS3_SX|MAS3_SW|MAS3_SR))
+
+	/*
+	 * TLB 1:	256M	Non-cacheable, guarded
+	 * 0x80000000	256M	PCI1 MEM First half
+	 */
+	.long FSL_BOOKE_MAS0(1, 1, 0)
+	.long FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_256M)
+	.long FSL_BOOKE_MAS2(CFG_PCI1_MEM_BASE, (MAS2_I|MAS2_G))
+	.long FSL_BOOKE_MAS3(CFG_PCI1_MEM_BASE, 0, (MAS3_SX|MAS3_SW|MAS3_SR))
+
+	/*
+	 * TLB 2:	256M	Non-cacheable, guarded
+	 * 0x90000000	256M	PCI1 MEM Second half
+	 */
+	.long FSL_BOOKE_MAS0(1, 2, 0)
+	.long FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_256M)
+	.long FSL_BOOKE_MAS2(CFG_PCI1_MEM_BASE + 0x10000000, (MAS2_I|MAS2_G))
+	.long FSL_BOOKE_MAS3(CFG_PCI1_MEM_BASE + 0x10000000, 0,
+			(MAS3_SX|MAS3_SW|MAS3_SR))
+
+	/*
+	 * TLB 3:	256M Cacheable, non-guarded
+	 * 0x0		256M DDR SDRAM
+	 */
+	#if !defined(CONFIG_SPD_EEPROM)
+	.long FSL_BOOKE_MAS0(1, 3, 0)
+	.long FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_256M)
+	.long FSL_BOOKE_MAS2(CFG_DDR_SDRAM_BASE, 0)
+	.long FSL_BOOKE_MAS3(CFG_DDR_SDRAM_BASE, 0, (MAS3_SX|MAS3_SW|MAS3_SR))
+	#endif
+
+	/*
+	 * TLB 4:	64M	Non-cacheable, guarded
+	 * 0xe0000000	1M	CCSRBAR
+	 * 0xe2000000	16M	PCI1 IO
+	 */
+	.long FSL_BOOKE_MAS0(1, 4, 0)
+	.long FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_64M)
+	.long FSL_BOOKE_MAS2(CFG_CCSRBAR, (MAS2_I|MAS2_G))
+	.long FSL_BOOKE_MAS3(CFG_CCSRBAR, 0, (MAS3_SX|MAS3_SW|MAS3_SR))
+
+	/*
+	 * TLB 5:	64M	Cacheable, non-guarded
+	 * 0xf0000000	64M	LBC SDRAM
+	 */
+	.long FSL_BOOKE_MAS0(1, 5, 0)
+	.long FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_64M)
+	.long FSL_BOOKE_MAS2(CFG_LBC_SDRAM_BASE, 0)
+	.long FSL_BOOKE_MAS3(CFG_LBC_SDRAM_BASE, 0, (MAS3_SX|MAS3_SW|MAS3_SR))
+
+	/*
+	 * TLB 6:	16M	Cacheable, non-guarded
+	 * 0xf8000000	1M	7-segment LED display
+	 * 0xf8100000	1M	User switches
+	 * 0xf8300000	1M	Board revision
+	 * 0xf8b00000	1M	EEPROM
+	 */
+	.long FSL_BOOKE_MAS0(1, 6, 0)
+	.long FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_16M)
+	.long FSL_BOOKE_MAS2(CFG_EPLD_BASE, 0)
+	.long FSL_BOOKE_MAS3(CFG_EPLD_BASE, 0, (MAS3_SX|MAS3_SW|MAS3_SR))
+
+	entry_end
+
+/*
+ * LAW(Local Access Window) configuration:
+ *
+ * 0x0000_0000	0x0fff_ffff	DDR			256M
+ * 0x8000_0000	0x9fff_ffff	PCI1 MEM		512M
+ * 0xe000_0000	0xe000_ffff	CCSR			1M
+ * 0xe200_0000	0xe2ff_ffff	PCI1 IO			16M
+ * 0xf000_0000	0xf7ff_ffff	SDRAM			128M
+ * 0xf8b0_0000	0xf80f_ffff	EEPROM			1M
+ * 0xfb80_0000	0xff7f_ffff	FLASH (2nd bank)	64M
+ * 0xff80_0000	0xffff_ffff	FLASH (boot bank)	8M
+ *
+ * Notes:
+ * 	CCSRBAR and L2-as-SRAM don't need a configured Local Access Window.
+ *	If flash is 8M at default position (last 8M), no LAW needed.
+ *
+ *	The defines below are 1-off of the actual LAWAR0 usage.
+ *	So LAWAR3 define uses the LAWAR4 register in the ECM.
+ */
+
+
+#if !defined(CONFIG_SPD_EEPROM)
+	#define LAWBAR0 ((CFG_DDR_SDRAM_BASE>>12) & 0xfffff)
+	#define LAWAR0  (LAWAR_EN | LAWAR_TRGT_IF_DDR | (LAWAR_SIZE & LAWAR_SIZE_256M))
+#else
+	#define LAWBAR0 0
+	#define LAWAR0  ((LAWAR_TRGT_IF_DDR | (LAWAR_SIZE & LAWAR_SIZE_256M)) & ~LAWAR_EN)
+#endif
+
+#define LAWBAR1 ((CFG_PCI1_MEM_BASE>>12) & 0xfffff)
+#define LAWAR1 	(LAWAR_EN | LAWAR_TRGT_IF_PCI1 | (LAWAR_SIZE & LAWAR_SIZE_512M))
+
+#define LAWBAR2 ((CFG_PCI1_IO_BASE>>12) & 0xfffff)
+#define LAWAR2 	(LAWAR_EN | LAWAR_TRGT_IF_PCI1 | (LAWAR_SIZE & LAWAR_SIZE_16M))
+
+/* LBC window - maps 256M 0xf0000000 -> 0xffffffff */
+#define LAWBAR3 ((CFG_LBC_SDRAM_BASE>>12) & 0xfffff)
+#define LAWAR3 	(LAWAR_EN | LAWAR_TRGT_IF_LBC | (LAWAR_SIZE & LAWAR_SIZE_256M))
+
+	.section .bootpg, "ax"
+	.globl	law_entry
+
+law_entry:
+	entry_start
+	.long 4
+	.long LAWBAR0,LAWAR0,LAWBAR1,LAWAR1,LAWBAR2,LAWAR2,LAWBAR3,LAWAR3
+	entry_end