From 76562a907cf88d852eaebbba6cb7aad13bb2c9df Mon Sep 17 00:00:00 2001
From: Zhang Jiejing <jiejing.zhang@freescale.com>
Date: Wed, 23 Mar 2011 16:09:28 +0800
Subject: ENGR00141000 MX50_RDP: add android recovery support.

Add android recovery related config and code.

Signed-off-by: Zhang Jiejing <jiejing.zhang@freescale.com>
---
 board/freescale/mx50_rdp/mx50_rdp.c | 118 ++++++++++++++++++++++++++++++++++++
 include/asm-arm/arch-mx50/mx50.h    |   3 +-
 include/configs/mx50_rdp_android.h  |   9 +++
 3 files changed, 129 insertions(+), 1 deletion(-)

diff --git a/board/freescale/mx50_rdp/mx50_rdp.c b/board/freescale/mx50_rdp/mx50_rdp.c
index 554bdae..9d90fd3 100644
--- a/board/freescale/mx50_rdp/mx50_rdp.c
+++ b/board/freescale/mx50_rdp/mx50_rdp.c
@@ -56,6 +56,16 @@
 #include <lcd.h>
 #endif
 
+#ifdef CONFIG_ANDROID_RECOVERY
+#include "../common/recovery.h"
+#include <part.h>
+#include <ext2fs.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <ubi_uboot.h>
+#include <jffs2/load_kernel.h>
+#endif
+
 DECLARE_GLOBAL_DATA_PTR;
 
 static u32 system_rev;
@@ -1188,6 +1198,114 @@ int board_init(void)
 	return 0;
 }
 
+#ifdef CONFIG_ANDROID_RECOVERY
+struct reco_envs supported_reco_envs[BOOT_DEV_NUM] = {
+	{
+	 .cmd = NULL,
+	 .args = NULL,
+	 },
+	{
+	 .cmd = NULL,
+	 .args = NULL,
+	 },
+	{
+	 .cmd = NULL,
+	 .args = NULL,
+	 },
+	{
+	 .cmd = NULL,
+	 .args = NULL,
+	 },
+	{
+	 .cmd = NULL,
+	 .args = NULL,
+	 },
+	{
+	 .cmd = NULL,
+	 .args = NULL,
+	 },
+	{
+	 .cmd = CONFIG_ANDROID_RECOVERY_BOOTCMD_MMC,
+	 .args = CONFIG_ANDROID_RECOVERY_BOOTARGS_MMC,
+	 },
+	{
+	 .cmd = CONFIG_ANDROID_RECOVERY_BOOTCMD_MMC,
+	 .args = CONFIG_ANDROID_RECOVERY_BOOTARGS_MMC,
+	 },
+	{
+	 .cmd = NULL,
+	 .args = NULL,
+	 },
+};
+
+int check_recovery_cmd_file(void)
+{
+	disk_partition_t info;
+	ulong part_length;
+	int filelen;
+
+	switch (get_boot_device()) {
+	case MMC_BOOT:
+	case SD_BOOT:
+		{
+			block_dev_desc_t *dev_desc = NULL;
+			struct mmc *mmc = find_mmc_device(0);
+
+			dev_desc = get_dev("mmc", 0);
+
+			if (NULL == dev_desc) {
+				puts("** Block device MMC 0 not supported\n");
+				return 0;
+			}
+
+			mmc_init(mmc);
+
+			if (get_partition_info(dev_desc,
+					CONFIG_ANDROID_CACHE_PARTITION_MMC,
+					&info)) {
+				printf("** Bad partition %d **\n",
+					CONFIG_ANDROID_CACHE_PARTITION_MMC);
+				return 0;
+			}
+
+			part_length = ext2fs_set_blk_dev(dev_desc,
+							CONFIG_ANDROID_CACHE_PARTITION_MMC);
+			if (part_length == 0) {
+				printf("** Bad partition - mmc 0:%d **\n",
+					CONFIG_ANDROID_CACHE_PARTITION_MMC);
+				ext2fs_close();
+				return 0;
+			}
+
+			if (!ext2fs_mount(part_length)) {
+				printf("** Bad ext2 partition or disk - mmc 0:%d **\n",
+					CONFIG_ANDROID_CACHE_PARTITION_MMC);
+				ext2fs_close();
+				return 0;
+			}
+
+			filelen = ext2fs_open(CONFIG_ANDROID_RECOVERY_CMD_FILE);
+
+			ext2fs_close();
+		}
+		break;
+	case NAND_BOOT:
+		return 0;
+		break;
+	case SPI_NOR_BOOT:
+		return 0;
+		break;
+	case UNKNOWN_BOOT:
+	default:
+		return 0;
+		break;
+	}
+
+	return (filelen > 0) ? 1 : 0;
+
+}
+#endif
+
 int board_late_init(void)
 {
 #ifdef CONFIG_IMX_CSPI
diff --git a/include/asm-arm/arch-mx50/mx50.h b/include/asm-arm/arch-mx50/mx50.h
index b912040..9c905e5 100644
--- a/include/asm-arm/arch-mx50/mx50.h
+++ b/include/asm-arm/arch-mx50/mx50.h
@@ -293,7 +293,8 @@ enum boot_device {
 	SD_BOOT,
 	MMC_BOOT,
 	NAND_BOOT,
-	UNKNOWN_BOOT
+	UNKNOWN_BOOT,
+	BOOT_DEV_NUM = UNKNOWN_BOOT,
 };
 
 enum mxc_clock {
diff --git a/include/configs/mx50_rdp_android.h b/include/configs/mx50_rdp_android.h
index d1bf934..ac4cc80 100644
--- a/include/configs/mx50_rdp_android.h
+++ b/include/configs/mx50_rdp_android.h
@@ -312,6 +312,15 @@
 #define CONFIG_FASTBOOT_TRANSFER_BUF    0x80000000
 #define CONFIG_FASTBOOT_TRANSFER_BUF_SIZE 0x8000000 /* 128M byte */
 
+#define CONFIG_ANDROID_RECOVERY
+#define CONFIG_ANDROID_RECOVERY_BOOTARGS_MMC \
+	"setenv bootargs ${bootargs} init=/init root=/dev/mmcblk0p4"	\
+	"rootfs=ext4 keypad"
+#define CONFIG_ANDROID_RECOVERY_BOOTCMD_MMC  \
+	"run bootargs_base bootargs_android_recovery;"  \
+	"mmc read 0 ${loadaddr} 0x800 0x2000;bootm"
+#define CONFIG_ANDROID_RECOVERY_CMD_FILE "/recovery/command"
+
 #define CONFIG_MTD_DEVICE
 #define CONFIG_MTD_PARTITIONS
 
-- 
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