Commit 3313e0e2 authored by Mark Jonas's avatar Mark Jonas Committed by Nobuhiro Iwamatsu
Browse files

sh: Added support for SH7720 based board MPR2.


Signed-off-by: default avatarMark Jonas <mark.jonas@de.bosch.com>
Signed-off-by: default avatarNobuhiro Iwamatsu <iwamatsu@nigauri.org>
parent 3ecff1d7
......@@ -236,6 +236,10 @@ E: mark.jonas@freescale.com
D: Support for Freescale Total5200 platform
W: http://www.mobilegt.com/
N: Mark Jonas
E: mark.jonas@de.bosch.com
D: Support for MPR2 board
N: Sam Song
E: samsongshu@yahoo.com.cn
D: Port to the RPXlite_DW board
......
......@@ -699,6 +699,10 @@ Nobuhiro Iwmaatsu <iwamatsu@nigauri.org>
MS7750SE SH7750
MS7722SE SH7722
Mark Jonas <mark.jonas@de.bosch.com>
mpr2 SH7720
Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
MS7720SE SH7720
......
......@@ -704,6 +704,7 @@ LIST_sh4=" \
"
LIST_sh3=" \
mpr2 \
ms7720se \
"
......
......@@ -2837,6 +2837,11 @@ atngw100_config : unconfig
#########################################################################
## sh3 (Renesas SuperH)
#########################################################################
mpr2_config: unconfig
@ >include/config.h
@echo "#define CONFIG_MPR2 1" >> include/config.h
@$(MKCONFIG) -a $(@:_config=) sh sh3 mpr2
ms7720se_config: unconfig
@echo "#define CONFIG_MS7720SE 1" > include/config.h
@$(MKCONFIG) -a $(@:_config=) sh sh3 ms7720se
......
#
# Copyright (C) 2007
# Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
#
# Copyright (C) 2007
# Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
#
# Copyright (C) 2007
# Kenati Technologies, Inc.
#
# (C) Copyright 2008
# Mark Jonas <mark.jonas@de.bosch.com>
#
# board/mpr2/Makefile
#
# 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 $(TOPDIR)/config.mk
LIB = lib$(BOARD).a
OBJS := mpr2.o
SOBJS := lowlevel_init.o
$(LIB): $(OBJS) $(SOBJS)
$(AR) crv $@ $(OBJS) $(SOBJS)
clean:
rm -f $(SOBJS) $(OBJS)
distclean: clean
rm -f $(LIB) core *.bak .depend
#########################################################################
.depend: Makefile $(SOBJS:.o=.S) $(OBJS:.o=.c)
$(CC) -M $(CPPFLAGS) $(SOBJS:.o=.S) $(OBJS:.o=.c) > $@
-include .depend
#########################################################################
#
# Copyright (C) 2007
# Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
#
# Copyright (C) 2007
# Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
#
# Copyright (C) 2007
# Kenati Technologies, Inc.
#
# Copyright (C) 2008
# Mark Jonas <mark.jonas@de.bosch.com>
#
# board/mpr2/config.mk
#
# 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
#
# TEXT_BASE refers to image _after_ relocation.
#
# NOTE: Must match value used in u-boot.lds (in this directory).
#
TEXT_BASE = 0x8FFC0000
/*
* (C) Copyright 2008
* Mark Jonas <mark.jonas@de.bosch.com>
*
* (C) Copyright 2007
* Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
*
* board/mpr2/lowlevel_init.S
*
* 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
*/
.global lowlevel_init
.text
.align 2
lowlevel_init:
/*
* Set frequency multipliers and dividers in FRQCR.
*/
mov.l WTCSR_A,r1
mov.l WTCSR_D,r0
mov.w r0,@r1
mov.l WTCNT_A,r1
mov.l WTCNT_D,r0
mov.w r0,@r1
mov.l FRQCR_A,r1
mov.l FRQCR_D,r0
mov.w r0,@r1
/*
* Setup CS0 (Flash).
*/
mov.l CS0BCR_A, r1
mov.l CS0BCR_D, r0
mov.l r0, @r1
mov.l CS0WCR_A, r1
mov.l CS0WCR_D, r0
mov.l r0, @r1
/*
* Setup CS3 (SDRAM).
*/
mov.l CS3BCR_A, r1
mov.l CS3BCR_D, r0
mov.l r0, @r1
mov.l CS3WCR_A, r1
mov.l CS3WCR_D, r0
mov.l r0, @r1
mov.l SDCR_A, r1
mov.l SDCR_D1, r0
mov.l r0, @r1
mov.l RTCSR_A, r1
mov.l RTCSR_D, r0
mov.l r0, @r1
mov.l RTCNT_A, r1
mov.l RTCNT_D, r0
mov.l r0, @r1
mov.l RTCOR_A, r1
mov.l RTCOR_D, r0
mov.l r0, @r1
mov.l SDCR_A, r1
mov.l SDCR_D2, r0
mov.l r0, @r1
mov.l SDMR3_A, r1
mov.l SDMR3_D, r0
add r0, r1
mov #0, r0
mov.w r0, @r1
rts
nop
.align 4
/*
* Configuration for MPR2 A.3 through A.7
*/
/*
* PLL Settings
*/
FRQCR_D: .long 0x1103 /* I:B:P=8:4:2 */
WTCNT_D: .long 0x5A00 /* start counting at zero */
WTCSR_D: .long 0xA507 /* divide by 4096 */
/*
* Spansion S29GL256N11 @ 48 MHz
*/
CS0BCR_D: .long 0x12490400 /* 1 idle cycle inserted, normal space, 16 bit */
CS0WCR_D: .long 0x00000340 /* tSW=0.5ck, 6 wait cycles, NO external wait, tHW=0.5ck */
/*
* Samsung K4S511632B-UL75 @ 48 MHz
* Micron MT48LC32M16A2-75 @ 48 MHz
*/
CS3BCR_D: .long 0x10004400 /* CS3BCR = 0x10004400, minimum idle cycles, SDRAM, 16 bit */
CS3WCR_D: .long 0x00000091 /* tRP=1ck, tRCD=1ck, CL=2, tRWL=2ck, tRC=4ck */
SDCR_D1: .long 0x00000012 /* no refresh, 13 rows, 10 cols, NO bank active mode */
SDCR_D2: .long 0x00000812 /* refresh */
RTCSR_D: .long 0xA55A0008 /* 1/4, once */
RTCNT_D: .long 0xA55A005D /* count 93 */
RTCOR_D: .long 0xa55a005d /* count 93 */
SDMR3_D: .long 0x440 /* mode register CL2, burst read and SINGLE WRITE */
/*
* Registers
*/
FRQCR_A: .long 0xA415FF80
WTCNT_A: .long 0xA415FF84
WTCSR_A: .long 0xA415FF86
#define BSC_BASE 0xA4FD0000
CS0BCR_A: .long BSC_BASE + 0x04
CS3BCR_A: .long BSC_BASE + 0x0C
CS0WCR_A: .long BSC_BASE + 0x24
CS3WCR_A: .long BSC_BASE + 0x2C
SDCR_A: .long BSC_BASE + 0x44
RTCSR_A: .long BSC_BASE + 0x48
RTCNT_A: .long BSC_BASE + 0x4C
RTCOR_A: .long BSC_BASE + 0x50
SDMR3_A: .long BSC_BASE + 0x5000
/*
* Copyright (C) 2008
* Mark Jonas <mark.jonas@de.bosch.com>
*
* board/mpr2/mpr2.c
*
* 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 <common.h>
#include <asm/io.h>
#include <asm/processor.h>
int checkboard(void)
{
puts("BOARD: MPR2\n");
return 0;
}
int board_init(void)
{
/*
* For MPR2 A.3 through A.7
*/
/* CS2: Ethernet (0xA8000000 - 0xABFFFFFF) */
__raw_writel(0x36db0400, CS2BCR); /* 4 idle cycles, normal space, 16 bit data bus */
__raw_writel(0x000003c0, CS2WCR); /* (WR:8), no ext. wait */
/* CS4: CAN1 (0xB0000000 - 0xB3FFFFFF) */
__raw_writel(0x00000200, CS4BCR); /* no idle cycles, normal space, 8 bit data bus */
__raw_writel(0x00100981, CS4WCR); /* (SW:1.5 WR:3 HW:1.5), ext. wait */
/* CS5a: CAN2 (0xB4000000 - 0xB5FFFFFF) */
__raw_writel(0x00000200, CS5ABCR); /* no idle cycles, normal space, 8 bit data bus */
__raw_writel(0x00100981, CS5AWCR); /* (SW:1.5 WR:3 HW:1.5), ext. wait */
/* CS5b: CAN3 (0xB6000000 - 0xB7FFFFFF) */
__raw_writel(0x00000200, CS5BBCR); /* no idle cycles, normal space, 8 bit data bus */
__raw_writel(0x00100981, CS5BWCR); /* (SW:1.5 WR:3 HW:1.5), ext. wait */
/* CS6a: Rotary (0xB8000000 - 0xB9FFFFFF) */
__raw_writel(0x00000200, CS6ABCR); /* no idle cycles, normal space, 8 bit data bus */
__raw_writel(0x001009C1, CS6AWCR); /* (SW:1.5 WR:3 HW:1.5), no ext. wait */
/* set Pin Select Register A: /PCC_CD1, /PCC_CD2, PCC_BVD1, PCC_BVD2, /IOIS16, IRQ4, IRQ5, USB1d_SUSPEND */
__raw_writew(0xAABC, PSELA); /* 10 10 10 10 10 11 11 00 */
/* set Pin Select Register B: /SCIF0_RTS, /SCIF0_CTS, LCD_VCPWC, LCD_VEPWC, IIC_SDA, IIC_SCL, Reserved */
__raw_writew(0x3C00, PSELB); /* 0 0 11 11 0 0 00000000 */
/* set Pin Select Register C: SIOF1_SCK, SIOF1_RxD, SCIF1_RxD, SCIF1_TxD, Reserved */
__raw_writew(0x0000, PSELC); /* 00 00 00 00 00000000 */
/* set Pin Select Register D: Reserved, SIOF1_TxD, Reserved, SIOF1_MCLK, Reserved, SIOF1_SYNC, Reserved, SCIF1_SCK, Reserved */
__raw_writew(0x0000, PSELD); /* 0 00 00 00 00 00 00 00 0 */
/* OTH: (00) Other fuction
* GPO: (01) General Purpose Output
* GPI: (11) General Purpose Input
* GPI+: (10) General Purpose Input with internal pull-up
*-------------------------------------------------------
* A7 GPO(LED8); A6 GPO(LED7); A5 GPO(LED6); A4 GPO(LED5);
* A3 GPO(LED4); A2 GPO(LED3); A1 GPO(LED2); A0 GPO(LED1); */
__raw_writew(0x5555, PACR); /* 01 01 01 01 01 01 01 01 */
/* B7 GPO(RST4); B6 GPO(RST3); B5 GPO(RST2); B4 GPO(RST1);
* B3 GPO(PB3); B2 GPO(PB2); B1 GPO(PB1); B0 GPO(PB0); */
__raw_writew(0x5555, PBCR); /* 01 01 01 01 01 01 01 01 */
/* C7 GPO(PC7); C6 GPO(PC6); C5 GPO(PC5); C4 GPO(PC4);
* C3 LCD_DATA3; C2 LCD_DATA2; C1 LCD_DATA1; C0 LCD_DATA0; */
__raw_writew(0x5500, PCCR); /* 01 01 01 01 00 00 00 00 */
/* D7 GPO(PD7); D6 GPO(PD6); D5 GPO(PD5); D4 GPO(PD4);
* D3 GPO(PD3); D2 GPO(PD2); D1 GPO(PD1); D0 GPO(PD0); */
__raw_writew(0x5555, PDCR); /* 01 01 01 01 01 01 01 01 */
/* E7 (x); E6 GPI(nu); E5 GPI(nu); E4 LCD_M_DISP;
* E3 LCD_CL1; E2 LCD_CL2; E1 LCD_DON; E0 LCD_FLM; */
__raw_writew(0x2800, PECR); /* 00 10 10 00 00 00 00 00 */
/* F7 (x); F6 DA1(VLCD); F5 DA0(nc); F4 AN3;
* F3 AN2(MID_AD); F2 AN1(EARTH_AD); F1 AN0(TEMP); F0 GPI+(nc); */
__raw_writew(0x0002, PFCR); /* 00 00 00 00 00 00 00 10 */
/* G7 (x); G6 IRQ5(TOUCH_BUSY); G5 IRQ4(TOUCH_IRQ);G4 GPI(KEY2);
* G3 GPI(KEY1); G2 GPO(LED11); G1 GPO(LED10); G0 GPO(LED9); */
__raw_writew(0x03D5, PGCR); /* 00 00 00 11 11 01 01 01 */
/* H7 (x); H6 /RAS(BRAS); H5 /CAS(BCAS); H4 CKE(BCKE);
* H3 GPO(EARTH_OFF); H2 GPO(EARTH_TEST); H1 USB2_PWR; H0 USB1_PWR; */
__raw_writew(0x0050, PHCR); /* 00 00 00 00 01 01 00 00 */
/* J7 (x); J6 AUDCK; J5 ASEBRKAK; J4 AUDATA3;
* J3 AUDATA2; J2 AUDATA1; J1 AUDATA0; J0 AUDSYNC; */
__raw_writew(0x0000, PJCR); /* 00 00 00 00 00 00 00 00 */
/* K7 (x); K6 (x); K5 (x); K4 (x)
* K3 PINT7(/PWR2); K2 PINT6(/PWR1); K1 PINT5(nc); K0 PINT4(FLASH_READY); */
__raw_writew(0x00FB, PKCR); /* 00 00 00 00 11 11 10 11 */
/* L7 TRST; L6 TMS; L5 TDO; L4 TDI;
* L3 TCK; L2 (x); L1 (x); L0 (x); */
__raw_writew(0x0000, PLCR); /* 00 00 00 00 00 00 00 00 */
/* M7 GPO(CURRENT_SINK);M6 GPO(PWR_SWITCH); M5 GPO(LAN_SPEED); M4 GPO(LAN_RESET);
* M3 GPO(BUZZER); M2 GPO(LCD_BL); M1 CS5B(CAN3_CS); M0 GPI+(nc); */
__raw_writew(0x5552, PMCR); /* 01 01 01 01 01 01 00 10 */
__raw_writeb(0xF0, PMDR); /* CURRENT_SINK=off, PWR_SWITCH=off, LAN_SPEED=100MBit, LAN_RESET=off, BUZZER=off, LCD_BL=off */
/* P7 (x); P6 (x); P5 (x); P4 GPO(on pullup);
* P3 IRQ3(LAN_IRQ); P2 IRQ2(CAN3_IRQ);P1 IRQ1(CAN2_IRQ); P0 IRQ0(CAN1_IRQ); */
__raw_writew(0x0100, PPCR); /* 00 00 00 01 00 00 00 00 */
__raw_writeb(0x10, PPDR); /* no current flow through pullup */
/* R7 A25; R6 A24; R5 A23; R4 A22;
* R3 A21; R2 A20; R1 A19; R0 A0; */
__raw_writew(0x0000, PRCR); /* 00 00 00 00 00 00 00 00 */
/* S7 (x); S6 (x); S5 (x); S4 GPO(EEPROM_CS2);
* S3 GPO(EEPROM_CS1); S2 SIOF0_TXD; S1 SIOF0_RXD; S0 SIOF0_SCK; */
__raw_writew(0x0140, PSCR); /* 00 00 00 01 01 00 00 00 */
/* T7 (x); T6 (x); T5 (x); T4 COM1_CTS;
* T3 COM1_RTS; T2 COM1_TXD; T1 COM1_RXD; T0 GPO(WDOG); */
__raw_writew(0x0001, PTCR); /* 00 00 00 00 00 00 00 01 */
/* U7 (x); U6 (x); U5 (x); U4 GPI+(/AC_FAULT);
* U3 GPO(TOUCH_CS); U2 TOUCH_TXD; U1 TOUCH_RXD; U0 TOUCH_SCK; */
__raw_writew(0x0240, PUCR); /* 00 00 00 10 01 00 00 00 */
/* V7 (x); V6 (x); V5 (x); V4 GPO(MID2);
* V3 GPO(MID1); V2 CARD_TxD; V1 CARD_RxD; V0 GPI+(/BAT_FAULT); */
__raw_writew(0x0142, PVCR); /* 00 00 00 01 01 00 00 10 */
return 0;
}
int dram_init(void)
{
DECLARE_GLOBAL_DATA_PTR;
gd->bd->bi_memstart = CFG_SDRAM_BASE;
gd->bd->bi_memsize = CFG_SDRAM_SIZE;
printf("SDRAM: %dMB\n", CFG_SDRAM_SIZE / (1024 * 1024));
return 0;
}
/*
* Copyright (C) 2007
* Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
*
* Copyright (C) 2007
* Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
*
* Copyright (C) 2008
* Mark Jonas <mark.jonas@de.bosch.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_FORMAT("elf32-sh-linux", "elf32-sh-linux", "elf32-sh-linux")
OUTPUT_ARCH(sh)
ENTRY(_start)
SECTIONS
{
/*
Base address of internal SDRAM is 0x8C000000.
U-Boot resides in the last 256 kB of the 64 MB.
NOTE: This address must match with the definition of
TEXT_BASE in config.mk (in this directory).
*/
. = 0x8C000000 + (64*1024*1024) - (256*1024);
PROVIDE (reloc_dst = .);
PROVIDE (_ftext = .);
PROVIDE (_fcode = .);
PROVIDE (_start = .);
.text :
{
cpu/sh3/start.o (.text)
. = ALIGN(8192);
common/environment.o (.ppcenv)
. = ALIGN(8192);
common/environment.o (.ppcenvr)
. = ALIGN(8192);
*(.text)
. = ALIGN(4);
} =0xFF
PROVIDE (_ecode = .);
.rodata :
{
*(.rodata)
. = ALIGN(4);
}
PROVIDE (_etext = .);
PROVIDE (_fdata = .);
.data :
{
*(.data)
. = ALIGN(4);
}
PROVIDE (_edata = .);
PROVIDE (_fgot = .);
.got :
{
*(.got)
. = ALIGN(4);
}
PROVIDE (_egot = .);
PROVIDE (__u_boot_cmd_start = .);
.u_boot_cmd :
{
*(.u_boot_cmd)
. = ALIGN(4);
}
PROVIDE (__u_boot_cmd_end = .);
PROVIDE (reloc_dst_end = .);
/* _reloc_dst_end = .; */
PROVIDE (bss_start = .);
PROVIDE (__bss_start = .);
.bss :
{
*(.bss)
. = ALIGN(4);
}
PROVIDE (bss_end = .);
PROVIDE (_end = .);
}
/*
* (C) Copyright 2007 Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
* Copyright 2007 (C)
* Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
*
* Copyright 2008 (C)
* Mark Jonas <mark.jonas@de.bosch.com>
*
* SH7720 Internal I/O register
*
......@@ -201,6 +205,25 @@
#define PSELD (PFC_BASE + 0x2A)
/* I/O Port */
#define PORT_BASE 0xA4050100
#define PADR (PORT_BASE + 0x40)
#define PBDR (PORT_BASE + 0x42)
#define PCDR (PORT_BASE + 0x44)
#define PDDR (PORT_BASE + 0x46)
#define PEDR (PORT_BASE + 0x48)
#define PFDR (PORT_BASE + 0x4A)
#define PGDR (PORT_BASE + 0x4C)
#define PHDR (PORT_BASE + 0x4E)
#define PJDR (PORT_BASE + 0x50)
#define PKDR (PORT_BASE + 0x52)
#define PLDR (PORT_BASE + 0x54)
#define PMDR (PORT_BASE + 0x56)
#define PPDR (PORT_BASE + 0x58)
#define PRDR (PORT_BASE + 0x5A)
#define PSDR (PORT_BASE + 0x5C)
#define PTDR (PORT_BASE + 0x5E)
#define PUDR (PORT_BASE + 0x60)
#define PVDR (PORT_BASE + 0x62)
/* H-UDI */
......
/*
* Configuation settings for MPR2
*
* Copyright (C) 2008
* Mark Jonas <mark.jonas@de.bosch.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
*/
#ifndef __MPR2_H
#define __MPR2_H
/* Supported commands */
#define CONFIG_CMD_ENV
#define CONFIG_CMD_CACHE
#define CONFIG_CMD_MEMORY
#define CONFIG_CMD_FLASH
/* Default environment variables */
#define CONFIG_BAUDRATE 115200
#define CONFIG_BOOTARGS "console=ttySC0,115200"
#define CONFIG_BOOTFILE /boot/zImage
#define CONFIG_LOADADDR 0x8E000000