* Restrict baudrate settings on LWMON to higher speeds

  when watchdog is on

* Update baudrate in bd_info when it gets changed

* Add watchdog trigger points while waiting for serial port
  (so far only 8xx -- needed on LWMON with 100ms watchdog)

* Improve command line tool to access the U-Boot's environment
  (figuration of the utility, using a config file)

1 files changed, 29 insertions, 14 deletions

diff --git a/tools/env/README b/tools/env/README
index 2b54adf..d8386f7 100644
--- a/tools/env/README
+++ b/tools/env/README
@@ -2,28 +2,43 @@
 This is a demo implementation of a Linux command line tool to access
 the U-Boot's environment variables.
 
-Configuration is done via #defines in the fw_env.h file. The
+For the run-time utiltity configuration uncomment the line
+#define CONFIG_FILE  "/etc/fw_env.config"
+in fw_env.h.
+
+See comments in the fw_env.config file for definitions for the
+particular board.
+
+Configuration can also be done via #defines in the fw_env.h file. The
 following lines are relevant:
 
 #define HAVE_REDUND	/* For systems with 2 env sectors */
 #define DEVICE1_NAME	"/dev/mtd1"
 #define DEVICE2_NAME	"/dev/mtd2"
-#define ENV1_SIZE	0x4000
-#define DEVICE1_ESIZE	0x4000
-#define ENV2_SIZE	0x4000
-#define DEVICE2_ESIZE	0x4000
+#define DEVICE1_OFFSET    0x0000
+#define ENV1_SIZE         0x4000
+#define DEVICE1_ESIZE     0x4000
+#define DEVICE2_OFFSET    0x0000
+#define ENV2_SIZE         0x4000
+#define DEVICE2_ESIZE     0x4000
 
 Current configuration matches the environment layout of the TRAB
 board.
 
 Un-define HAVE_REDUND, if you want to use the utlities on a system
-that does not have support for redundant environment enabled. The
-DEVICEx_NAME constants define which MTD character device(s) is (are)
-to be used to access the environment. If HAVE_REDUND is undefined,
-DEVICE2_NAME is ignored, as is ENV2_SIZE and DEVICE2_ESIZE. ENVx_SIZE
-defines the size in bytes taken by the environment, which may be less
-then flash sector size, if the environment takes less then 1 sector.
+that does not have support for redundant environment enabled.
+If HAVE_REDUND is undefined, DEVICE2_NAME is ignored,
+as is ENV2_SIZE and DEVICE2_ESIZE.
+
+The DEVICEx_NAME constants define which MTD character devices are to
+be used to access the environment.
+
+The DEVICEx_OFFSET constants define the environment offset within the
+MTD character device.
+
+ENVx_SIZE defines the size in bytes taken by the environment, which
+may be less then flash sector size, if the environment takes less
+then 1 sector.
+
 DEVICEx_ESIZE defines the size of the first sector in the flash
-partition where the environment resides. It is assumed that the
-environment is located in the first ENVx_SIZE bytes of the device
-DEVICEx_NAME.
+partition where the environment resides.