Add support for friendly-arm SBC-2410X board
Patch by JinHua Luo, 01 Sep 2005
diff --git a/board/sbc2410x/lowlevel_init.S b/board/sbc2410x/lowlevel_init.S
new file mode 100644
index 0000000..5bfa14a
--- /dev/null
+++ b/board/sbc2410x/lowlevel_init.S
@@ -0,0 +1,163 @@
+/*
+ * Memory Setup stuff - taken from blob memsetup.S
+ *
+ * Copyright (C) 1999 2000 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl) and
+ * Jan-Derk Bakker (J.D.Bakker@its.tudelft.nl)
+ *
+ * Modified for the Samsung SMDK2410 by
+ * (C) Copyright 2002
+ * David Mueller, ELSOFT AG, <d.mueller@elsoft.ch>
+ *
+ * Modified for the friendly-arm SBC-2410X by
+ * (C) Copyright 2005
+ * JinHua Luo, GuangDong Linux Center, <luo.jinhua@gd-linux.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 <config.h>
+#include <version.h>
+
+/*
+ * Taken from linux/arch/arm/boot/compressed/head-s3c2410.S
+ *
+ * Copyright (C) 2002 Samsung Electronics SW.LEE <hitchcar@sec.samsung.com>
+ */
+
+#define BWSCON 0x48000000
+
+/* BWSCON */
+#define DW8 (0x0)
+#define DW16 (0x1)
+#define DW32 (0x2)
+#define WAIT (0x1<<2)
+#define UBLB (0x1<<3)
+
+#define B1_BWSCON (DW16)
+#define B2_BWSCON (DW16)
+#define B3_BWSCON (DW16 + WAIT + UBLB)
+#define B4_BWSCON (DW16)
+#define B5_BWSCON (DW16)
+#define B6_BWSCON (DW32)
+#define B7_BWSCON (DW32)
+
+#define B0_Tacs 0x0
+#define B0_Tcos 0x0
+#define B0_Tacc 0x7
+#define B0_Tcoh 0x0
+#define B0_Tah 0x0
+#define B0_Tacp 0x0
+#define B0_PMC 0x0
+
+#define B1_Tacs 0x0
+#define B1_Tcos 0x0
+#define B1_Tacc 0x7
+#define B1_Tcoh 0x0
+#define B1_Tah 0x0
+#define B1_Tacp 0x0
+#define B1_PMC 0x0
+
+#define B2_Tacs 0x0
+#define B2_Tcos 0x0
+#define B2_Tacc 0x7
+#define B2_Tcoh 0x0
+#define B2_Tah 0x0
+#define B2_Tacp 0x0
+#define B2_PMC 0x0
+
+#define B3_Tacs 0xc
+#define B3_Tcos 0x7
+#define B3_Tacc 0xf
+#define B3_Tcoh 0x1
+#define B3_Tah 0x0
+#define B3_Tacp 0x0
+#define B3_PMC 0x0
+
+#define B4_Tacs 0x0
+#define B4_Tcos 0x0
+#define B4_Tacc 0x7
+#define B4_Tcoh 0x0
+#define B4_Tah 0x0
+#define B4_Tacp 0x0
+#define B4_PMC 0x0
+
+#define B5_Tacs 0xc
+#define B5_Tcos 0x7
+#define B5_Tacc 0xf
+#define B5_Tcoh 0x1
+#define B5_Tah 0x0
+#define B5_Tacp 0x0
+#define B5_PMC 0x0
+
+#define B6_MT 0x3 /* SDRAM */
+#define B6_Trcd 0x1
+#define B6_SCAN 0x1 /* 9bit */
+
+#define B7_MT 0x3 /* SDRAM */
+#define B7_Trcd 0x1 /* 3clk */
+#define B7_SCAN 0x1 /* 9bit */
+
+/* REFRESH parameter */
+#define REFEN 0x1 /* Refresh enable */
+#define TREFMD 0x0 /* CBR(CAS before RAS)/Auto refresh */
+#define Trp 0x0 /* 2clk */
+#define Trc 0x3 /* 7clk */
+#define Tchr 0x2 /* 3clk */
+#define REFCNT 0x0459
+/**************************************/
+
+_TEXT_BASE:
+ .word TEXT_BASE
+
+.globl lowlevel_init
+lowlevel_init:
+ /* memory control configuration */
+ /* make r0 relative the current location so that it */
+ /* reads SMRDATA out of FLASH rather than memory ! */
+ ldr r0, =SMRDATA
+ ldr r1, _TEXT_BASE
+ sub r0, r0, r1
+ ldr r1, =BWSCON /* Bus Width Status Controller */
+ add r2, r0, #13*4
+0:
+ ldr r3, [r0], #4
+ str r3, [r1], #4
+ cmp r2, r0
+ bne 0b
+
+ /* everything is fine now */
+ mov pc, lr
+
+ .ltorg
+/* the literal pools origin */
+
+SMRDATA:
+ .word (0+(B1_BWSCON<<4)+(B2_BWSCON<<8)+(B3_BWSCON<<12)+(B4_BWSCON<<16)+(B5_BWSCON<<20)+(B6_BWSCON<<24)+(B7_BWSCON<<28))
+ .word ((B0_Tacs<<13)+(B0_Tcos<<11)+(B0_Tacc<<8)+(B0_Tcoh<<6)+(B0_Tah<<4)+(B0_Tacp<<2)+(B0_PMC))
+ .word ((B1_Tacs<<13)+(B1_Tcos<<11)+(B1_Tacc<<8)+(B1_Tcoh<<6)+(B1_Tah<<4)+(B1_Tacp<<2)+(B1_PMC))
+ .word ((B2_Tacs<<13)+(B2_Tcos<<11)+(B2_Tacc<<8)+(B2_Tcoh<<6)+(B2_Tah<<4)+(B2_Tacp<<2)+(B2_PMC))
+ .word ((B3_Tacs<<13)+(B3_Tcos<<11)+(B3_Tacc<<8)+(B3_Tcoh<<6)+(B3_Tah<<4)+(B3_Tacp<<2)+(B3_PMC))
+ .word ((B4_Tacs<<13)+(B4_Tcos<<11)+(B4_Tacc<<8)+(B4_Tcoh<<6)+(B4_Tah<<4)+(B4_Tacp<<2)+(B4_PMC))
+ .word ((B5_Tacs<<13)+(B5_Tcos<<11)+(B5_Tacc<<8)+(B5_Tcoh<<6)+(B5_Tah<<4)+(B5_Tacp<<2)+(B5_PMC))
+ .word ((B6_MT<<15)+(B6_Trcd<<2)+(B6_SCAN))
+ .word ((B7_MT<<15)+(B7_Trcd<<2)+(B7_SCAN))
+ .word ((REFEN<<23)+(TREFMD<<22)+(Trp<<20)+(Trc<<18)+(Tchr<<16)+REFCNT)
+ .word 0xb2
+ .word 0x30
+ .word 0x30