将u-boot-2016.11移植到TINY4412

    在工作之余显得有点无聊，就想着将u-boot-2016.11移植到TINY4412上试一试，下面是自己的移植过程，也当作一个学习笔记吧，记录记录下步骤和自己解决问题的过程。

    移植之前也看了一写博客，因为想支持uboot的spl，所以就选择origen左右模板移植一个uboot到tiny4412上

    1. 首先我们在终端上通过find -name "*origen*" 看和origen相关的文件有哪些，然后将这些文件或者文件夹复制成TINY4412。

   


   


上面的图修正一下， ./board/samsung/tiny4412/tools/tiny4412.c 重命名为mktiny4412spl.c

    2. 修改相关文件的内容

    这一步其实也很简单，我们这边在终端通过 grep -insr "origen" 查看和origen相关的内容，然后模仿origen，将origen字眼改成tiny4412即可。

    2.1 修改顶层目录的makefile

diff --git a/Makefile b/Makefile
index 8ca1db5..c65f484 100644
--- a/Makefile
+++ b/Makefile
@@ -246,6 +246,9 @@ ifeq ($(HOSTARCH),$(ARCH))
CROSS_COMPILE ?=
endif

+ARCH ?= arm
+CROSS_COMPILE ?= arm-none-eabi-
+
KCONFIG_CONFIG ?= .config
export KCONFIG_CONFIG

    2.2 修改exynos4210-tiny4412.dts文件并将其添加到makefile文件中

    ----- arch/arm/dts/exynos4210-tiny4412.dts

diff --git a/arch/arm/dts/exynos4210-tiny4412.dts b/arch/arm/dts/exynos4210-tiny4412.dts
index 26c4d7f..a4fe14f 100644
--- a/arch/arm/dts/exynos4210-tiny4412.dts
+++ b/arch/arm/dts/exynos4210-tiny4412.dts
@@ -1,5 +1,5 @@
/*
- * Samsung's Exynos4210 based Origen board device tree source
+ * Tiny4412 board device tree source
*
* Copyright (c) 2014 Samsung Electronics Co., Ltd.
*             http://www.samsung.com @@ -9,22 +9,29 @@

/dts-v1/;
#include "skeleton.dtsi"
-#include "exynos4210.dtsi"
+//#include "exynos4210.dtsi"
+#include "exynos4412.dtsi"

/ {
-       model = "Insignal Origen evaluation board based on Exynos4210";
-       compatible = "insignal,origen", "samsung,exynos4210";
+       model = "Insignal Tiny4412 evaluation board based on Exynos4412";
+       compatible = "insignal,tiny4412", "samsung,exynos4412";

chosen {
bootargs ="";
+               /* 设置uart0作为终端 */
+               stdout-path="serial0";
};

aliases {
serial0 = "/serial@13800000";
-               console = "/serial@13820000";
+               console = "/serial@13800000";
mmc2 = "/sdhci@12530000";
};

+       serial0:serial@13810000 {
+               status = "okay";
+       };
+
sdhci@12510000 {
status = "disabled";
};

    ----- arch/arm/dts/Makefile

diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 836a8c4..bfd1c06 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -10,6 +10,7 @@ dtb-$(CONFIG_AT91FAMILY) += at91sam9260-smartweb.dtb \
dtb-$(CONFIG_S5PC100) += s5pc1xx-smdkc100.dtb
dtb-$(CONFIG_S5PC110) += s5pc1xx-goni.dtb
dtb-$(CONFIG_EXYNOS4) += exynos4210-origen.dtb \
+       exynos4210-tiny4412.dtb \
exynos4210-smdkv310.dtb \
exynos4210-universal_c210.dtb \
exynos4210-trats.dtb \

    2.2 修改arch/arm/include/asm/mach-types.h

diff --git a/arch/arm/include/asm/mach-types.h b/arch/arm/include/asm/mach-types.h
index d51be0b..1e64b18 100644
--- a/arch/arm/include/asm/mach-types.h
+++ b/arch/arm/include/asm/mach-types.h
@@ -1062,6 +1062,7 @@ extern unsigned int __machine_arch_type;
#define MACH_TYPE_MONCH                3453
#define MACH_TYPE_CURACAO              3454
#define MACH_TYPE_ORIGEN               3455
+#define MACH_TYPE_TINY4412             5555
#define MACH_TYPE_EPC10                3456
#define MACH_TYPE_SGH_I740             3457
#define MACH_TYPE_TUNA                 3458
@@ -13672,6 +13673,18 @@ extern unsigned int __machine_arch_type;
# define machine_is_origen()   (0)
#endif

+#ifdef CONFIG_MACH_TINY4412
+# ifdef machine_arch_type
+#  undef machine_arch_type
+#  define machine_arch_type    __machine_arch_type
+# else
+#  define machine_arch_type    MACH_TYPE_TINY4412
+# endif
+# define machine_is_tiny4412() (machine_arch_type == MACH_TYPE_TINY4412)
+#else
+# define machine_is_tiny4412() (0)
+#endif
+
#ifdef CONFIG_MACH_EPC10
# ifdef machine_arch_type
#  undef machine_arch_type

    2.3 修改arch/arm/mach-exynos/Kconfig

diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig
index ce2a16f..1672a59 100644
--- a/arch/arm/mach-exynos/Kconfig
+++ b/arch/arm/mach-exynos/Kconfig
@@ -50,6 +50,10 @@ config TARGET_ORIGEN
bool "Exynos4412 Origen board"
select SUPPORT_SPL

+config TARGET_TINY4412
+       bool "Exynos4412 Tiny4412 board"
+       select SUPPORT_SPL
+
config TARGET_TRATS2
bool "Exynos4412 Trat2 board"

@@ -143,6 +147,7 @@ source "board/samsung/smdkv310/Kconfig"
source "board/samsung/trats/Kconfig"
source "board/samsung/universal_c210/Kconfig"
source "board/samsung/origen/Kconfig"
+source "board/samsung/tiny4412/Kconfig"
source "board/samsung/trats2/Kconfig"
source "board/samsung/odroid/Kconfig"
source "board/samsung/arndale/Kconfig"

    2.4 修改arch/arm/mach-exynos/dmc_init_exynos4.c

diff --git a/arch/arm/mach-exynos/dmc_init_exynos4.c b/arch/arm/mach-exynos/dmc_init_exynos4.c
index ecddc72..1d3c388 100644
--- a/arch/arm/mach-exynos/dmc_init_exynos4.c
+++ b/arch/arm/mach-exynos/dmc_init_exynos4.c
@@ -175,7 +175,7 @@ void mem_ctrl_init(int reset)
* 0: full_sync
*/
writel(1, ASYNC_CONFIG);
-#ifdef CONFIG_ORIGEN
+#if (defined CONFIG_ORIGEN) || (defined CONFIG_TINY4412)
/* Interleave: 2Bit, Interleave_bit1: 0x15, Interleave_bit0: 0x7 */
writel(APB_SFR_INTERLEAVE_CONF_VAL, EXYNOS4_MIU_BASE +
APB_SFR_INTERLEAVE_CONF_OFFSET);

    2.5 修改 arch/arm/mach-exynos/exynos4_setup.h

diff --git a/arch/arm/mach-exynos/exynos4_setup.h b/arch/arm/mach-exynos/exynos4_setup.h
index 9f29d94..f880dc9 100644
--- a/arch/arm/mach-exynos/exynos4_setup.h
+++ b/arch/arm/mach-exynos/exynos4_setup.h
@@ -6,8 +6,14 @@
* SPDX-License-Identifier:    GPL-2.0+
*/

+/*
#ifndef _ORIGEN_SETUP_H
#define _ORIGEN_SETUP_H
+*/
+
+/* 不确定这样更改是否有问题，先改着 */
+#ifndef _TINY4412_SETUP_H
+#define _TINY4412_SETUP_H

#include <config.h>
#include <asm/arch/cpu.h>
@@ -434,7 +440,7 @@ struct mem_timings {
#define ABP_SFR_SLV1_SINGLE_ADDRMAP_START_OFFSET       0x828
#define ABP_SFR_SLV1_SINGLE_ADDRMAP_END_OFFSET 0x830

-#ifdef CONFIG_ORIGEN
+#if (defined CONFIG_ORIGEN) || (defined CONFIG_TINY4412)
/* Interleave: 2Bit, Interleave_bit1: 0x15, Interleave_bit0: 0x7 */
#define APB_SFR_INTERLEAVE_CONF_VAL    0x20001507
#define APB_SFR_ARBRITATION_CONF_VAL   0x00000001
@@ -556,7 +562,7 @@ struct mem_timings {

#define CONTROL2_VAL           0x00000000

-#ifdef CONFIG_ORIGEN
+#if (defined CONFIG_ORIGEN) || (defined CONFIG_TINY4412)
#define TIMINGREF_VAL          0x000000BB
#define TIMINGROW_VAL          0x4046654f
#define        TIMINGDATA_VAL          0x46400506

    2.6 修改 board/samsung/tiny4412/Kconfig

diff --git a/board/samsung/tiny4412/Kconfig b/board/samsung/tiny4412/Kconfig
index 63e3efe..06a7905 100644
--- a/board/samsung/tiny4412/Kconfig
+++ b/board/samsung/tiny4412/Kconfig
@@ -1,12 +1,12 @@
-if TARGET_ORIGEN
+if TARGET_TINY4412

config SYS_BOARD
-       default "origen"
+       default "tiny4412"

config SYS_VENDOR
default "samsung"

config SYS_CONFIG_NAME
-       default "origen"
+       default "tiny4412"

endif

    2.7 修改 board/samsung/tiny4412/Makefile

diff --git a/board/samsung/tiny4412/Makefile b/board/samsung/tiny4412/Makefile
index 1add9fe..a167418 100644
--- a/board/samsung/tiny4412/Makefile
+++ b/board/samsung/tiny4412/Makefile
@@ -8,15 +8,15 @@ ifdef CONFIG_SPL_BUILD
# necessary to create built-in.o
obj- := __dummy__.o

-hostprogs-y := tools/mkorigenspl
+hostprogs-y := tools/mktiny4412spl
always := $(hostprogs-y)

# omit -O2 option to suppress
#   warning: dereferencing type-punned pointer will break strict-aliasing rules
#
# TODO:
-# Fix the root cause in tools/mkorigenspl.c and delete the following work-around
-$(obj)/tools/mkorigenspl: HOSTCFLAGS:=$(filter-out -O2,$(HOSTCFLAGS))
+# Fix the root cause in tools/mktiny4412spl.c and delete the following work-around
+$(obj)/tools/mktiny4412spl: HOSTCFLAGS:=$(filter-out -O2,$(HOSTCFLAGS))
else
-obj-y  += origen.o
+obj-y  += tiny4412.o
endif

    2.8 修改 configs/tiny4412_defconfig

diff --git a/configs/tiny4412_defconfig b/configs/tiny4412_defconfig
index 0d91ec1..ee43047 100644
--- a/configs/tiny4412_defconfig
+++ b/configs/tiny4412_defconfig
@@ -1,14 +1,14 @@
CONFIG_ARM=y
CONFIG_ARCH_EXYNOS=y
CONFIG_ARCH_EXYNOS4=y
-CONFIG_TARGET_ORIGEN=y
-CONFIG_IDENT_STRING=" for ORIGEN"
-CONFIG_DEFAULT_DEVICE_TREE="exynos4210-origen"
+CONFIG_TARGET_TINY4412=y
+CONFIG_IDENT_STRING=" for TINY4412"
+CONFIG_DEFAULT_DEVICE_TREE="exynos4210-tiny4412"
CONFIG_SYS_CONSOLE_IS_IN_ENV=y
CONFIG_SYS_CONSOLE_INFO_QUIET=y
CONFIG_SPL=y
CONFIG_HUSH_PARSER=y
-CONFIG_SYS_PROMPT="ORIGEN # "
+CONFIG_SYS_PROMPT="TINY4412 # "
CONFIG_CMD_BOOTZ=y
# CONFIG_CMD_IMLS is not set
# CONFIG_CMD_XIMG is not set

    2.9 修改 include/configs/tiny4412.h

diff --git a/include/configs/tiny4412.h b/include/configs/tiny4412.h
index 26fe402..2c2b5b7 100644
--- a/include/configs/tiny4412.h
+++ b/include/configs/tiny4412.h
@@ -6,14 +6,28 @@
* SPDX-License-Identifier:    GPL-2.0+
*/

+/*
#ifndef __CONFIG_ORIGEN_H
#define __CONFIG_ORIGEN_H
+*/
+
+#ifndef __CONFIG_TINY4412_H
+#define __CONFIG_TINY4412_H

#include <configs/exynos4-common.h>

/* High Level Configuration Options */
#define CONFIG_EXYNOS4210              1       /* which is a EXYNOS4210 SoC */
#define CONFIG_ORIGEN                  1       /* working with ORIGEN*/
+#define CONFIG_TINY4412                        1
+
+/* 设置串口 */
+#define CONFIG_SPL_SERIAL_SUPPORT
+#define CONFIG_SPL_GPIO_SUPPORT
+#define CONFIG_DEBUG_UART
+#define CONFIG_DEBUG_UART_S5P
+#define CONFIG_DEBUG_UART_BASE 0x13800000
+#define CONFIG_DEBUG_UART_CLOCK (100000000)

#define CONFIG_SYS_DCACHE_OFF          1

@@ -30,7 +44,10 @@

#define CONFIG_SYS_TEXT_BASE           0x43E00000

+#if 0
#define CONFIG_MACH_TYPE               MACH_TYPE_ORIGEN
+#endif
+#define CONFIG_MACH_TYPE               MACH_TYPE_TINY4412

/* select serial console configuration */
#define CONFIG_SERIAL2
@@ -52,7 +69,8 @@

/* MMC SPL */
#define COPY_BL2_FNPTR_ADDR    0x02020030
-#define CONFIG_SPL_TEXT_BASE   0x02021410
+/* 设置SPL链接地址 */
+#define CONFIG_SPL_TEXT_BASE   0x02023400

#define CONFIG_EXTRA_ENV_SETTINGS \
"loadaddr=0x40007000\0" \
@@ -102,9 +120,15 @@

#define CONFIG_SYS_INIT_SP_ADDR                0x02040000

-/* U-Boot copy size from boot Media to DRAM.*/
+/* 设置将uboot拷贝到DRAM中地址 */
#define COPY_BL2_SIZE          0x80000
#define BL2_START_OFFSET       ((CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE)/512)
#define BL2_SIZE_BLOC_COUNT    (COPY_BL2_SIZE/512)

+#define COPY_UBOOT_SIZE        0x80000
+#define UBOOT_START_OFFSET     ((CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE)/512)
+#define UBOOT_SIZE_BLOC_COUNT  (COPY_UBOOT_SIZE/512)
+

    到了这里，所有内容基本就修改完毕了。

   

    但是后来在我编译的时候发现，出现了编译异常，但是从结果来看，所需要的文件都编译出来了，所以这一点我现在也不是很清楚原因，不过根据报错的提示：



     是需要在合适的Kconfig文件中添加CONFIG_TINY4412 这个配置选项，所以做了如下修改
   

diff --git a/board/samsung/tiny4412/Kconfig b/board/samsung/tiny4412/Kconfig
index 06a7905..04658fe 100644
--- a/board/samsung/tiny4412/Kconfig
+++ b/board/samsung/tiny4412/Kconfig
@@ -1,5 +1,9 @@
if TARGET_TINY4412

+config TINY4412
+       default y
+       bool "For CONFIG_TINY4412"
+
config SYS_BOARD
default "tiny4412"

    根据我现在的理解，添加的这config配置并没有实际的使用意义，应该不会对其他内容产生影响，暂且这样修改吧。

   好的，修改就到这里了，这些修改只是能够让编译能够通过了，但是离能在tiny4412上面运行，还有很长一段路呢。