Initial revision

2 files changed, 255 insertions, 0 deletions

diff --git a/board/sandpoint/early_init.S b/board/sandpoint/early_init.S
new file mode 100644
index 0000000..127bd37
--- /dev/null
+++ b/board/sandpoint/early_init.S
@@ -0,0 +1,154 @@
+/*
+ * (C) Copyright 2001
+ * Thomas Koeller, tkoeller@gmx.net
+ *
+ * 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
+ */
+
+#ifndef	__ASSEMBLY__
+#define __ASSEMBLY__	1
+#endif
+
+#include <config.h>
+#include <asm/processor.h>
+#include <mpc824x.h>
+#include <ppc_asm.tmpl>
+
+#if defined(USE_DINK32)
+  /* We are running from RAM, so do not clear the MCCR1_MEMGO bit! */
+  #define MCCR1VAL ((CFG_ROMNAL << MCCR1_ROMNAL_SHIFT) | (CFG_ROMFAL << MCCR1_ROMFAL_SHIFT) | MCCR1_MEMGO)
+#else
+  #define MCCR1VAL (CFG_ROMNAL << MCCR1_ROMNAL_SHIFT) | (CFG_ROMFAL << MCCR1_ROMFAL_SHIFT)
+#endif
+
+	.text
+
+	/* Values to program into memory controller registers */
+tbl:	.long	MCCR1, MCCR1VAL
+	.long	MCCR2, CFG_REFINT << MCCR2_REFINT_SHIFT
+	.long	MCCR3
+	.long	(((CFG_BSTOPRE & 0x000000f0) >> 4) << MCCR3_BSTOPRE2TO5_SHIFT) | \
+		(CFG_REFREC << MCCR3_REFREC_SHIFT) | \
+		(CFG_RDLAT  << MCCR3_RDLAT_SHIFT)
+	.long	MCCR4
+        .long	(CFG_PRETOACT << MCCR4_PRETOACT_SHIFT) | (CFG_ACTTOPRE << MCCR4_ACTTOPRE_SHIFT) | \
+		(CFG_REGISTERD_TYPE_BUFFER << 20) | \
+        	(((CFG_BSTOPRE & 0x00000300) >> 8) << MCCR4_BSTOPRE0TO1_SHIFT ) | \
+        	((CFG_SDMODE_CAS_LAT << 4) | (CFG_SDMODE_WRAP << 3) | \
+		(CFG_SDMODE_BURSTLEN) << MCCR4_SDMODE_SHIFT) | \
+		(CFG_ACTTORW << MCCR4_ACTTORW_SHIFT) | \
+        	((CFG_BSTOPRE & 0x0000000f) << MCCR4_BSTOPRE6TO9_SHIFT )
+	.long	MSAR1
+        .long	(((CFG_BANK0_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) <<  0) | \
+		(((CFG_BANK1_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) <<  8) | \
+		(((CFG_BANK2_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 16) | \
+		(((CFG_BANK3_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 24)
+	.long	EMSAR1
+	.long	(((CFG_BANK0_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) <<  0) | \
+		(((CFG_BANK1_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) <<  8) | \
+		(((CFG_BANK2_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 16) | \
+		(((CFG_BANK3_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 24)
+	.long	MSAR2
+        .long	(((CFG_BANK4_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) <<  0) | \
+		(((CFG_BANK5_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) <<  8) | \
+		(((CFG_BANK6_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 16) | \
+		(((CFG_BANK7_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 24)
+	.long	EMSAR2
+	.long	(((CFG_BANK4_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) <<  0) | \
+		(((CFG_BANK5_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) <<  8) | \
+		(((CFG_BANK6_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 16) | \
+		(((CFG_BANK7_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 24)
+	.long	MEAR1
+        .long	(((CFG_BANK0_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) <<  0) | \
+		(((CFG_BANK1_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) <<  8) | \
+		(((CFG_BANK2_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 16) | \
+		(((CFG_BANK3_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 24)
+	.long	EMEAR1
+	.long	(((CFG_BANK0_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) <<  0) | \
+		(((CFG_BANK1_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) <<  8) | \
+		(((CFG_BANK2_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 16) | \
+		(((CFG_BANK3_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 24)
+	.long	MEAR2
+        .long	(((CFG_BANK4_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) <<  0) | \
+		(((CFG_BANK5_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) <<  8) | \
+		(((CFG_BANK6_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 16) | \
+		(((CFG_BANK7_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 24)
+	.long	EMEAR2
+	.long	(((CFG_BANK4_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) <<  0) | \
+		(((CFG_BANK5_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) <<  8) | \
+		(((CFG_BANK6_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 16) | \
+		(((CFG_BANK7_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 24)
+	.long	0
+
+
+
+	/*
+	 * Early CPU initialization. Set up memory controller, so we can access any RAM at all. This
+	 * must be done in assembly, since we have no stack at this point.
+	 */
+	.global	early_init_f
+early_init_f:
+	mflr	r10
+
+	/* basic memory controller configuration */
+	lis	r3, CONFIG_ADDR_HIGH
+	lis	r4, CONFIG_DATA_HIGH
+	bl	lab
+lab:	mflr	r5
+	lwzu	r0, tbl - lab(r5)
+loop:	lwz	r1, 4(r5)
+	stwbrx	r0, 0, r3
+	eieio
+	stwbrx	r1, 0, r4
+	eieio
+	lwzu	r0, 8(r5)
+	cmpli	cr0, 0, r0, 0
+	bne	cr0, loop
+
+	/* set bank enable bits */
+	lis	r0, MBER@h
+	ori	r0, 0, MBER@l
+	li	r1, CFG_BANK_ENABLE
+	stwbrx	r0, 0, r3
+	eieio
+	stb	r1, 0(r4)
+	eieio
+
+	/* delay loop */
+	lis	r0, 0x0003
+	mtctr   r0
+delay:	bdnz	delay
+
+	/* enable memory controller */
+	lis	r0, MCCR1@h
+	ori	r0, 0, MCCR1@l
+	stwbrx	r0, 0, r3
+	eieio
+	lwbrx	r0, 0, r4
+	oris	r0, 0, MCCR1_MEMGO@h
+	stwbrx	r0, 0, r4
+	eieio
+
+	/* set up stack pointer */
+	lis	r1, CFG_INIT_SP_OFFSET@h
+	ori	r1, r1, CFG_INIT_SP_OFFSET@l
+
+	mtlr	r10
+	blr
+
diff --git a/board/sandpoint/u-boot.lds.mw.debug b/board/sandpoint/u-boot.lds.mw.debug
new file mode 100644
index 0000000..a0378cb
--- /dev/null
+++ b/board/sandpoint/u-boot.lds.mw.debug
@@ -0,0 +1,101 @@
+/*
+ * (C) Copyright 2000
+ * Rob Taylor, Flying Pig Systems Ltd. robt@flyingpig.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
+ */
+
+OUTPUT_ARCH(powerpc)
+SEARCH_DIR(/lib); SEARCH_DIR(/usr/lib); SEARCH_DIR(/usr/local/lib); SEARCH_DIR(/usr/local/powerpc-any-elf/lib);
+
+MEMORY {
+ 	ram  (!rx) : org = 0x00000000 , LENGTH = 8M
+ 	code (!rx) : org = 0x00002000 , LENGTH = (4M - 0x2000)
+ 	rom   (rx) : org = 0xfe000000 , LENGTH = (0x100000000 - 0xfe000000)
+}
+
+SECTIONS
+{
+  _f_init = .;
+  PROVIDE(_f_init = .);
+  _f_init_rom = .;
+  PROVIDE(_f_init_rom = .);
+
+  .init : {
+      cpu/mpc824x/start.o	(.text)
+      *(.init)
+  } > ram
+  _init_size = SIZEOF(.init);
+  PROVIDE(_init_size = SIZEOF(.init));
+
+  ENTRY(_start)
+
+/*  _ftext = .;
+  _ftext_rom = .;
+  _text_size = SIZEOF(.text);
+ */
+  .text : {
+      *(.text)
+      *(.got1)
+      } > ram
+  .rodata : { *(.rodata) } > ram
+  .dtors : { *(.dtors) } > ram
+  .data : { *(.data) } > ram
+  .sdata : { *(.sdata) } > ram
+  .sdata2 : { *(.sdata2)
+      *(.got)
+    _GOT2_TABLE_ = .;
+    *(.got2)
+    _FIXUP_TABLE_ = .;
+    *(.fixup)
+    } > ram
+  __got2_entries = (_FIXUP_TABLE_ - _GOT2_TABLE_) >>2;
+  __fixup_entries = (. - _FIXUP_TABLE_)>>2;
+
+  .sbss : { *(.sbss) } > ram
+  .sbss2 : { *(.sbss2) } > ram
+  .bss : { *(.bss) } > ram
+  .debug : { *(.debug) } > ram
+  .line : { *(.line) } > ram
+  .symtab : { *(.symtab) } > ram
+  .shrstrtab : { *(.shstrtab) } > ram
+  .strtab : { *(.strtab) } > ram
+ /* .reloc   :
+  {
+    *(.got)
+    _GOT2_TABLE_ = .;
+    *(.got2)
+    _FIXUP_TABLE_ = .;
+    *(.fixup)
+  } > ram
+  */
+   __start___ex_table = .;
+    __ex_table : { *(__ex_table) } > ram
+    __stop___ex_table = .;
+
+
+  .ppcenv	:
+  {
+    common/environment.o (.ppcenv)
+  } > ram
+
+  _end = . ;
+  PROVIDE (end = .);
+}
+