163 lines
4.1 KiB
Diff
163 lines
4.1 KiB
Diff
From 6e2630a0fc872d0db34157972f6dc3941f6d66dd Mon Sep 17 00:00:00 2001
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From: Daniel Golle <daniel@makrotopia.org>
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Date: Mon, 19 May 2014 21:38:01 +0200
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Subject: [PATCH] tools/env: add support for env in ubi volume chardev
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Signed-off-by: Daniel Golle <daniel@makrotopia.org>
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---
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tools/env/Makefile | 5 ++++
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tools/env/fw_env.c | 76 +++++++++++++++++++++++++++++++++++++++++++++++-------
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2 files changed, 71 insertions(+), 10 deletions(-)
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--- a/tools/env/Makefile
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+++ b/tools/env/Makefile
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@@ -24,6 +24,13 @@ ifeq ($(MTD_VERSION),old)
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HOST_EXTRACFLAGS += -DMTD_OLD
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endif
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+ifeq ($(UBI),y)
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+HOST_EXTRACFLAGS += -DUBI
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+HOST_LOADLIBES = "-Wl,--gc-sections,-lubi-utils"
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+else
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+HOST_LOADLIBES = "-Wl,--gc-sections"
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+endif
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+
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always := fw_printenv
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hostprogs-y := fw_printenv
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--- a/tools/env/fw_env.c
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+++ b/tools/env/fw_env.c
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@@ -31,6 +31,9 @@
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# include <mtd/mtd-user.h>
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#endif
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+#ifdef UBI
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+# include <libubi.h>
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+#endif
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#include "fw_env.h"
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#include <aes.h>
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@@ -811,6 +814,11 @@ static int flash_write_buf (int dev, int
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off_t top_of_range; /* end of the last block we may use */
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loff_t blockstart; /* running start of the current block -
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MEMGETBADBLOCK needs 64 bits */
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+#ifdef UBI
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+ libubi_t *libubi = NULL;/* pointer to libubi struct */
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+#else
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+ void *libubi = NULL;
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+#endif
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int rc;
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/*
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@@ -916,7 +924,30 @@ static int flash_write_buf (int dev, int
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continue;
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}
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- if (mtd_type != MTD_ABSENT) {
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+#ifdef UBI
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+ if (mtd_type == MTD_UBIVOLUME) {
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+ struct ubi_vol_info volinfo;
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+ libubi = libubi_open();
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+ if (libubi)
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+ rc = ubi_get_vol_info(libubi,
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+ DEVNAME(dev_current), &volinfo);
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+ if (libubi && !rc) {
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+ erasesize = volinfo.leb_size;
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+ int leb = blockstart / erasesize;
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+ if (volinfo.type != UBI_STATIC_VOLUME)
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+ rc = ubi_leb_change_start(libubi, fd,
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+ leb, erasesize);
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+ else
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+ rc = ubi_update_start(libubi, fd,
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+ erasesize);
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+ }
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+ if (libubi && rc) {
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+ libubi_close(libubi);
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+ libubi = NULL;
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+ }
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+ }
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+#endif
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+ if (!libubi && mtd_type != MTD_ABSENT) {
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erase.start = blockstart;
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ioctl(fd, MEMUNLOCK, &erase);
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/* These do not need an explicit erase cycle */
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@@ -933,7 +964,8 @@ static int flash_write_buf (int dev, int
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fprintf (stderr,
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"Seek error on %s: %s\n",
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DEVNAME (dev), strerror (errno));
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- return -1;
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+ processed = -1;
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+ goto out;
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}
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#ifdef DEBUG
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@@ -943,10 +975,11 @@ static int flash_write_buf (int dev, int
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if (write (fd, data + processed, erasesize) != erasesize) {
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fprintf (stderr, "Write error on %s: %s\n",
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DEVNAME (dev), strerror (errno));
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- return -1;
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+ processed = -1;
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+ goto out;
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}
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- if (mtd_type != MTD_ABSENT)
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+ if (!libubi && mtd_type != MTD_ABSENT)
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ioctl(fd, MEMLOCK, &erase);
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processed += erasesize;
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@@ -957,6 +990,11 @@ static int flash_write_buf (int dev, int
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if (write_total > count)
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free (data);
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+out:
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+#ifdef UBI
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+ if (libubi)
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+ libubi_close(libubi);
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+#endif
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return processed;
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}
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@@ -1068,12 +1106,8 @@ static int flash_read (int fd)
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if (S_ISCHR(st.st_mode)) {
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rc = ioctl(fd, MEMGETINFO, &mtdinfo);
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- if (rc < 0) {
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- fprintf(stderr, "Cannot get MTD information for %s\n",
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- DEVNAME(dev_current));
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- return -1;
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- }
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- if (mtdinfo.type != MTD_NORFLASH &&
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+ if (!rc &&
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+ mtdinfo.type != MTD_NORFLASH &&
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mtdinfo.type != MTD_NANDFLASH &&
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mtdinfo.type != MTD_DATAFLASH &&
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mtdinfo.type != MTD_UBIVOLUME) {
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@@ -1081,6 +1115,28 @@ static int flash_read (int fd)
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mtdinfo.type, DEVNAME(dev_current));
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return -1;
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}
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+#ifdef UBI
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+ if (rc) {
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+ libubi_t *libubi;
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+ struct ubi_vol_info volinfo;
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+ libubi = libubi_open();
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+ if (!libubi)
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+ return -ENOMEM;
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+
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+ rc = ubi_get_vol_info(libubi, DEVNAME(dev_current),
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+ &volinfo);
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+ if (rc) {
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+ libubi_close(libubi);
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+ return -ENODEV;
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+ }
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+ memset(&mtdinfo, 0, sizeof(mtdinfo));
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+ mtdinfo.type = MTD_UBIVOLUME;
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+ mtdinfo.size = volinfo.data_bytes;
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+ mtdinfo.erasesize = volinfo.leb_size;
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+ mtdinfo.writesize = volinfo.leb_size;
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+ libubi_close(libubi);
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+ }
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+#endif
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} else {
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memset(&mtdinfo, 0, sizeof(mtdinfo));
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mtdinfo.type = MTD_ABSENT;
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