support userdata and cache partitions using emmc/ext4 instead of mtd/yaffs
Change-Id: I827af624c9ec7c64decb702de8c0310cf19b4141
diff --git a/Android.mk b/Android.mk
index b0fefbd..4a3d285 100644
--- a/Android.mk
+++ b/Android.mk
@@ -24,6 +24,14 @@
RECOVERY_API_VERSION := 3
LOCAL_CFLAGS += -DRECOVERY_API_VERSION=$(RECOVERY_API_VERSION)
+LOCAL_STATIC_LIBRARIES :=
+
+ifeq ($(TARGET_USERIMAGES_USE_EXT4), true)
+LOCAL_CFLAGS += -DUSE_EXT4
+LOCAL_C_INCLUDES += system/extras/ext4_utils
+LOCAL_STATIC_LIBRARIES += libext4_utils libz
+endif
+
# This binary is in the recovery ramdisk, which is otherwise a copy of root.
# It gets copied there in config/Makefile. LOCAL_MODULE_TAGS suppresses
# a (redundant) copy of the binary in /system/bin for user builds.
@@ -31,7 +39,6 @@
LOCAL_MODULE_TAGS := eng
-LOCAL_STATIC_LIBRARIES :=
ifeq ($(TARGET_RECOVERY_UI_LIB),)
LOCAL_SRC_FILES += default_recovery_ui.c
else
diff --git a/roots.c b/roots.c
index 8f8dace..edb202e 100644
--- a/roots.c
+++ b/roots.c
@@ -23,6 +23,11 @@
#include "mtdutils/mtdutils.h"
#include "mtdutils/mounts.h"
+
+#ifdef USE_EXT4
+#include "make_ext4fs.h"
+#endif
+
#include "minzip/Zip.h"
#include "roots.h"
#include "common.h"
@@ -45,8 +50,6 @@
static RootInfo g_roots[] = {
{ "BOOT:", g_mtd_device, NULL, "boot", NULL, g_raw },
- { "CACHE:", g_mtd_device, NULL, "cache", "/cache", "yaffs2" },
- { "DATA:", g_mtd_device, NULL, "userdata", "/data", "yaffs2" },
{ "MISC:", g_mtd_device, NULL, "misc", NULL, g_raw },
{ "PACKAGE:", NULL, NULL, NULL, NULL, g_package_file },
{ "RECOVERY:", g_mtd_device, NULL, "recovery", "/", g_raw },
@@ -54,6 +57,17 @@
{ "SYSTEM:", g_mtd_device, NULL, "system", "/system", "yaffs2" },
{ "MBM:", g_mtd_device, NULL, "mbm", NULL, g_raw },
{ "TMP:", NULL, NULL, NULL, "/tmp", NULL },
+
+#ifdef USE_EXT4
+ { "CACHE:", "/dev/block/platform/sdhci-tegra.3/by-name/cache", NULL, NULL,
+ "/cache", "ext4" },
+ { "DATA:", "/dev/block/platform/sdhci-tegra.3/by-name/userdata", NULL, NULL,
+ "/data", "ext4" },
+#else
+ { "CACHE:", g_mtd_device, NULL, "cache", "/cache", "yaffs2" },
+ { "DATA:", g_mtd_device, NULL, "userdata", "/data", "yaffs2" },
+#endif
+
};
#define NUM_ROOTS (sizeof(g_roots) / sizeof(g_roots[0]))
@@ -249,7 +263,7 @@
mkdir(info->mount_point, 0755); // in case it doesn't already exist
if (mount(info->device, info->mount_point, info->filesystem,
- MS_NOATIME | MS_NODEV | MS_NODIRATIME, "")) {
+ MS_NOATIME | MS_NODEV | MS_NODIRATIME, "")) {
if (info->device2 == NULL) {
LOGE("Can't mount %s\n(%s)\n", info->device, strerror(errno));
return -1;
@@ -365,7 +379,21 @@
}
}
}
+
+#ifdef USE_EXT4
+ if (strcmp(info->filesystem, "ext4") == 0) {
+ reset_ext4fs_info();
+ int result = make_ext4fs(info->device, NULL, NULL, 0, 0);
+ if (result != 0) {
+ LOGW("make_ext4fs failed: %d\n", result);
+ return -1;
+ }
+ return 0;
+ }
+#endif
+
//TODO: handle other device types (sdcard, etc.)
- LOGW("format_root_device: can't handle non-mtd device \"%s\"\n", root);
+
+ LOGW("format_root_device: unknown device \"%s\"\n", root);
return -1;
}