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From 6e2630a0fc872d0db34157972f6dc3941f6d66dd 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 | 76 +++++++++++++++++++++++++++++++++++++++++++++++-------
2 files changed, 71 insertions(+), 10 deletions(-)
--- a/tools/env/Makefile
+++ b/tools/env/Makefile
@@ -24,6 +24,13 @@ ifeq ($(MTD_VERSION),old)
HOST_EXTRACFLAGS += -DMTD_OLD
endif
+ifeq ($(UBI),y)
+HOST_EXTRACFLAGS += -DUBI
+HOST_LOADLIBES = "-Wl,--gc-sections,-lubi-utils"
+else
+HOST_LOADLIBES = "-Wl,--gc-sections"
+endif
+
always := fw_printenv
hostprogs-y := fw_printenv
--- a/tools/env/fw_env.c
+++ b/tools/env/fw_env.c
@@ -31,6 +31,9 @@
# include <mtd/mtd-user.h>
#endif
+#ifdef UBI
+# include <libubi.h>
+#endif
#include "fw_env.h"
#include <aes.h>
@@ -811,6 +814,11 @@ static int flash_write_buf (int dev, int
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;
/*
@@ -916,7 +924,30 @@ static int flash_write_buf (int dev, int
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 */
@@ -933,7 +964,8 @@ static int flash_write_buf (int dev, int
fprintf (stderr,
"Seek error on %s: %s\n",
DEVNAME (dev), strerror (errno));
- return -1;
+ processed = -1;
+ goto out;
}
#ifdef DEBUG
@@ -943,10 +975,11 @@ static int flash_write_buf (int dev, int
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;
@@ -957,6 +990,11 @@ static int flash_write_buf (int dev, int
if (write_total > count)
free (data);
+out:
+#ifdef UBI
+ if (libubi)
+ libubi_close(libubi);
+#endif
return processed;
}
@@ -1068,12 +1106,8 @@ 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) {
@@ -1081,6 +1115,28 @@ 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;
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