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uboot-envtools: add support for environment in ubi volume

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On UBI enabled devices, U-Boot might store it's environment on
UBI volume(s). Support this in uboot-envtools, so fw_setenv and
fw_printenv can work on these platforms.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

SVN-Revision: 40929
This commit is contained in:
John Crispin 2014-06-02 12:44:19 +00:00
parent 85b8897d1a
commit dab35f044a
3 changed files with 184 additions and 0 deletions
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9
package/boot/uboot-envtools/Config.in Normal file
View File

@ -0,0 +1,9 @@
config UBOOT_ENVTOOLS_UBI
bool "Support environment in UBI volume"
depends on PACKAGE_uboot-envtools
default n
help
Add support for reading and writing U-Boot environment
stored in UBI volume(s).
Increases binary size by about 8 kB

9
package/boot/uboot-envtools/Makefile
View File

@ -21,6 +21,8 @@ PKG_MD5SUM:=6d2116d1385a66e9a59742caa9d62a54
PKG_BUILD_DIR:=$(BUILD_DIR)/u-boot-$(PKG_VERSION)
PKG_BUILD_DEPENDS:=+fstools
include $(INCLUDE_DIR)/package.mk
define Package/uboot-envtools
@ -34,15 +36,22 @@ define Package/uboot-envtools/description
This package includes tools to read and modify U-Boot bootloader environment.
endef
define Package/uboot-envtools/config
source "$(SOURCE)/Config.in"
endef
define Build/Configure
touch $(PKG_BUILD_DIR)/include/config.mk
touch $(PKG_BUILD_DIR)/include/config.h
endef
TARGET_CFLAGS += -I$(STAGING_DIR)/usr/include
define Build/Compile
$(MAKE) -C $(PKG_BUILD_DIR) \
CROSS_COMPILE="$(TARGET_CROSS)" \
TARGET_CFLAGS="$(TARGET_CFLAGS)" \
UBI="$(CONFIG_UBOOT_ENVTOOLS_UBI)" \
env
endef

166
package/boot/uboot-envtools/patches/300-support-env-in-ubivol-chardev.patch Normal file
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@ -0,0 +1,166 @@
From ee2c9e3aef32c05b1d7891858baff19bffed1652 Mon Sep 17 00:00:00 2001
From: Daniel Golle <daniel@makrotopia.org>
Date: Mon, 19 May 2014 21:38:01 +0200
Subject: [PATCH] tools/env: add support for env in ubi volume chardev
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
---
tools/env/Makefile | 5 ++++
tools/env/fw_env.c | 74 ++++++++++++++++++++++++++++++++++++++++++++++--------
2 files changed, 69 insertions(+), 10 deletions(-)
diff --git a/tools/env/Makefile b/tools/env/Makefile
index f5368bc..d006a93 100644
--- a/tools/env/Makefile
+++ b/tools/env/Makefile
@@ -20,6 +20,11 @@ ifeq ($(MTD_VERSION),old)
HOST_EXTRACFLAGS += -DMTD_OLD
endif
+ifeq ($(UBI),y)
+HOST_EXTRACFLAGS += -DUBI
+HOST_LOADLIBES = "-Wl,--gc-sections,-lubi-utils"
+endif
+
always := fw_printenv
hostprogs-y := fw_printenv_unstripped
diff --git a/tools/env/fw_env.c b/tools/env/fw_env.c
index 30d5b03..5c0acd5 100644
--- a/tools/env/fw_env.c
+++ b/tools/env/fw_env.c
@@ -29,6 +29,9 @@
# include <mtd/mtd-user.h>
#endif
+#ifdef UBI
+# include <libubi.h>
+#endif
#include "fw_env.h"
#include <aes.h>
@@ -809,6 +812,11 @@ static int flash_write_buf (int dev, int fd, void *buf, size_t count,
off_t top_of_range; /* end of the last block we may use */
loff_t blockstart; /* running start of the current block -
MEMGETBADBLOCK needs 64 bits */
+#ifdef UBI
+ libubi_t *libubi = NULL;/* pointer to libubi struct */
+#else
+ void *libubi = NULL;
+#endif
int rc;
/*
@@ -914,7 +922,30 @@ static int flash_write_buf (int dev, int fd, void *buf, size_t count,
continue;
}
- if (mtd_type != MTD_ABSENT) {
+#ifdef UBI
+ if (mtd_type == MTD_UBIVOLUME) {
+ struct ubi_vol_info volinfo;
+ libubi = libubi_open();
+ if (libubi)
+ rc = ubi_get_vol_info(libubi,
+ DEVNAME(dev_current), &volinfo);
+ if (libubi && !rc) {
+ erasesize = volinfo.leb_size;
+ int leb = blockstart / erasesize;
+ if (volinfo.type != UBI_STATIC_VOLUME)
+ rc = ubi_leb_change_start(libubi, fd,
+ leb, erasesize);
+ else
+ rc = ubi_update_start(libubi, fd,
+ erasesize);
+ }
+ if (libubi && rc) {
+ libubi_close(libubi);
+ libubi = NULL;
+ }
+ }
+#endif
+ if (!libubi && mtd_type != MTD_ABSENT) {
erase.start = blockstart;
ioctl(fd, MEMUNLOCK, &erase);
/* These do not need an explicit erase cycle */
@@ -931,7 +962,8 @@ static int flash_write_buf (int dev, int fd, void *buf, size_t count,
fprintf (stderr,
"Seek error on %s: %s\n",
DEVNAME (dev), strerror (errno));
- return -1;
+ processed = -1;
+ goto out;
}
#ifdef DEBUG
@@ -941,10 +973,11 @@ static int flash_write_buf (int dev, int fd, void *buf, size_t count,
if (write (fd, data + processed, erasesize) != erasesize) {
fprintf (stderr, "Write error on %s: %s\n",
DEVNAME (dev), strerror (errno));
- return -1;
+ processed = -1;
+ goto out;
}
- if (mtd_type != MTD_ABSENT)
+ if (!libubi && mtd_type != MTD_ABSENT)
ioctl(fd, MEMLOCK, &erase);
processed += erasesize;
@@ -955,6 +988,9 @@ static int flash_write_buf (int dev, int fd, void *buf, size_t count,
if (write_total > count)
free (data);
+out:
+ if (libubi)
+ libubi_close(libubi);
return processed;
}
@@ -1066,12 +1102,8 @@ static int flash_read (int fd)
if (S_ISCHR(st.st_mode)) {
rc = ioctl(fd, MEMGETINFO, &mtdinfo);
- if (rc < 0) {
- fprintf(stderr, "Cannot get MTD information for %s\n",
- DEVNAME(dev_current));
- return -1;
- }
- if (mtdinfo.type != MTD_NORFLASH &&
+ if (!rc &&
+ mtdinfo.type != MTD_NORFLASH &&
mtdinfo.type != MTD_NANDFLASH &&
mtdinfo.type != MTD_DATAFLASH &&
mtdinfo.type != MTD_UBIVOLUME) {
@@ -1079,6 +1111,28 @@ static int flash_read (int fd)
mtdinfo.type, DEVNAME(dev_current));
return -1;
}
+#ifdef UBI
+ if (rc) {
+ libubi_t *libubi;
+ struct ubi_vol_info volinfo;
+ libubi = libubi_open();
+ if (!libubi)
+ return -ENOMEM;
+
+ rc = ubi_get_vol_info(libubi, DEVNAME(dev_current),
+ &volinfo);
+ if (rc) {
+ libubi_close(libubi);
+ return -ENODEV;
+ }
+ memset(&mtdinfo, 0, sizeof(mtdinfo));
+ mtdinfo.type = MTD_UBIVOLUME;
+ mtdinfo.size = volinfo.data_bytes;
+ mtdinfo.erasesize = volinfo.leb_size;
+ mtdinfo.writesize = volinfo.leb_size;
+ libubi_close(libubi);
+ }
+#endif
} else {
memset(&mtdinfo, 0, sizeof(mtdinfo));
mtdinfo.type = MTD_ABSENT;
--
1.9.2