更新 MokoidBoard (DMA-6410L) 至 Android 2.1 (Eclair)
MokoidBoard 是基於 DMA-6410L (S3C6410) 的一款開發板，目前使用在仕橙3G教室的大部份訓練課程裡，目前已經將 Android 2.1 (Eclair) 移植至 MokoidBoard 上。開發板使用者或是課程學員，同樣請使用 [Mokoid] product tree 即可編譯。
升級 Android 2.1 步驟如下
以下步驟提供給 MokoidBoard 使用者參考。依此步驟即可將您的 MokoidBoard 升級 Android 2.1。
圖一：Android 2.1
圖二：Home Screen
1. 準備 Android 1.6 原始碼
請備妥 MokoidBoard CD，將 Android 1.6 (Donut) 取原始碼取出，並解壓縮。
2. 取得 Mokoid 分支
將 Mokoid 分支取出，擺放到 vendor/ 目錄下：
$ svn co http://mokoid.googlecode.com/svn/trunk/ mokoidAndroid 以 product tree 方式維護分支與編譯程式碼，請確保 mokoid 分支存在於 vendor/ 目錄下。
3. 取得 DMA-6410L 的 LED Stub
Mokoid 上的 LED Stub 為骨架，依開發板硬體，須填入 system call 程式碼。文後附上一個給 DMA-6410L 的 LED Stub 原始碼。
4. 保留 BatteryService 實作
請注意，由於 Android 2.1 的 BatteryService native 實作上做了變更。因此，我們先將 1.6 版的 BatteryService natvie 實作備份下來：
$ cp frameworks/base/services/jni/com_android_server_BatteryService.cpp /tmp
待更新至 2.1 版後，再將 1.6 的實作放回 source tree。Android 2.1 在 BatteryService native 端，主要的變動是修改了 sysfs 的讀取方式。
4. 更新至 Android 2.1 版
依照 [Android 網站] 上的說明，安裝 repo。接著使用 repo 直接取回 Android 2.1 的程式碼即可：
$ cd <path-to-your-android-source>/
$ repo sync
將 com_android_server_BatteryService.cpp 放回 source tree：
$ cp /tmp/com_android_server_BatteryService.cpp frameworks/base/services/jni/com_android_server_BatteryService.cpp5. 編譯 Mokoid Product Tree
編譯 Android image：
$ make PRODUCT-dma6410xp-eng6. 打包 ramdisk.img
將編譯完成的 ramdisk.img 包裝成 u-boot 格式：
$ mkimage -A arm -O linux -T ramdisk -C none -a 0x50800000 -n "ramdisk" -d ramdisk.img ramdisk-uboot.img將 system.img 與 ramdisk-uboot.img 拷貝到 tftp 根目錄下，並設定好開發板的 tftp 環境。
7. 更新至 Android 2.1
最後將 system.img 與 ramdisk-uboot.img 燒錄至 MokoidBoard 即可：
U-Boot 1.1.6 (Jan 21 2010 - 08:58:14) for SMDK6410
CPU: S3C6410@666MHz
Fclk = 666MHz, Hclk = 166MHz, Pclk = 83MHz, Serial = CLKUART (ASYNC Mo
Board: SMDK6410
DRAM: 128 MB
Flash: 0 kB
NAND: 128 MB
In: serial
Out: serial
Err: serial
Initialise LCD with values
Hit any key to stop autoboot: 0
SMDK6410 # run system
dm9000 i/o: 0x30000300, id: 0x90000a46
MAC: 00:40:5c:26:0a:5b
could not establish link
TFTP from server 10.0.1.24; our IP address is 10.0.1.25
Filename 'system.img'.
Load address: 0x50008000
Loading: T ####################################
...
done
Bytes transferred = 59174016 (386ec80 hex)
NAND erase: device 0 offset 0xa00000, size 0x4300000
Erasing at 0x4ce0000 -- 100% complete.
OK
NAND write: device 0 offset 0xa00000, size 0x386ec80
Writing data at 0x40b8800 -- 100% complete.
59174016 bytes written: OK
SMDK6410 # run ramdisk_uboot
dm9000 i/o: 0x30000300, id: 0x90000a46
MAC: 00:40:5c:26:0a:5b
could not establish link
TFTP from server 10.0.1.24; our IP address is 10.0.1.25
Filename 'ramdisk-uboot.img'.
Load address: 0x50008000
Loading: ################################
done
Bytes transferred = 158894 (26cae hex)
NAND erase: device 0 offset 0x900000, size 0x100000
Erasing at 0x9e0000 -- 100% complete.
OK
NAND write: device 0 offset 0x900000, size 0x100000
1048576 bytes written: OK
圖三：更新完成、啟動 MokoidBoard
圖四：執行 LedTest 範例、LED 燈初始化狀況為全滅
圖五：點亮 LED 1
DMA-6410L 的 LED Stub 原始碼
以下是 led.c 的原始碼，支援 DMA-6410L 的 LED 控制：
/*
* Copyright (C) 2009 Mokoid Open Source Project
* Copyright (C) 2009 Moko365 Inc
*
* Author: Jollen Chen <jollen@jollen.org>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "MokoidLedStub"
#include <hardware/hardware.h>
#include <fcntl.h>
#include <errno.h>
#include <cutils/log.h>
#include <cutils/atomic.h>
#include <mokoid/led.h>
/**
* Definition of kernel-space driver.
*/
#define LED_DEVICE "/dev/led"
#define LED_C608 1
#define LED_C609 2
static int led_device_close(struct hw_device_t* device)
{
struct led_control_device_t* ctx = (struct led_control_device_t*)device;
if (ctx) {
close(ctx->fd);
free(ctx);
}
return 0;
}
static int led_on(struct led_control_device_t *dev, int32_t led)
{
int fd;
LOGI("LED Stub: set %d on.", led);
fd = dev->fd;
switch (led) {
case LED_C608:
ioctl(fd, 1, &led);
break;
case LED_C609:
ioctl(fd, 1, &led);
break;
default:
return -1;
}
return 0;
}
static int led_off(struct led_control_device_t *dev, int32_t led)
{
int fd;
LOGI("LED Stub: set %d off.", led);
fd = dev->fd;
switch (led) {
case LED_C608:
ioctl(fd, 2, &led);
break;
case LED_C609:
ioctl(fd, 2, &led);
break;
default:
return -1;
}
return 0;
}
static int led_device_open(const struct hw_module_t* module, const char* name,
struct hw_device_t** device)
{
struct led_control_device_t *dev;
dev = (struct led_control_device_t *)malloc(sizeof(*dev));
memset(dev, 0, sizeof(*dev));
dev->common.tag = HARDWARE_DEVICE_TAG;
dev->common.version = 0;
dev->common.module = module;
dev->common.close = led_device_close;
dev->set_on = led_on;
dev->set_off = led_off;
*device = &dev->common;
/*
* Initialize Led hardware here.
*/
dev->fd = open(LED_DEVICE, O_RDONLY);
if (dev->fd < 0)
dev->fd = 2; /* Error Handler */
led_off(dev, LED_C608);
led_off(dev, LED_C609);
success:
return 0;
}
static struct hw_module_methods_t led_module_methods = {
open: led_device_open
};
const struct led_module_t HAL_MODULE_INFO_SYM = {
common: {
tag: HARDWARE_MODULE_TAG,
version_major: 1,
version_minor: 0,
id: LED_HARDWARE_MODULE_ID,
name: "Sample LED Stub",
author: "The Mokoid Open Source Project",
methods: &led_module_methods,
}
/* supporting APIs go here. */
};
新版的 led.h 設計：
/*
* Copyright (C) 2009 Mokoid Open Source Project
* Copyright (C) 2009 Moko365 Inc
*
* Author: Jollen Chen <jollen@jollen.org>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <hardware/hardware.h>
#include <fcntl.h>
#include <errno.h>
#include <cutils/log.h>
#include <cutils/atomic.h>
/***************************************************************************/
struct led_module_t {
struct hw_module_t common;
};
struct led_control_device_t {
struct hw_device_t common;
/* attributes */
int fd;
/* supporting control APIs go here */
int (*set_on)(struct led_control_device_t *dev, int32_t led);
int (*set_off)(struct led_control_device_t *dev, int32_t led);
};
/***************************************************************************/
struct led_control_context_t {
struct led_control_device_t device;
};
#define LED_HARDWARE_MODULE_ID "led"
下載原始碼
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