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* Restrict baudrate settings on LWMON to higher speeds

Browse Source 
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)
This commit is contained in:
wdenk
2003-01-11 09:48:40 +00:00
parent a25f862ba8
commit d0fb80c302
13 changed files with 341 additions and 171 deletions
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43
tools/env/README vendored
View File

@@ -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.

338
tools/env/fw_env.c vendored
View File

@@ -41,6 +41,7 @@ typedef unsigned char uchar;
typedef struct envdev_s {
uchar devname[16]; /* Device name */
ulong devoff; /* Device offset */
ulong env_size; /* environment size */
ulong erase_size; /* device erase size */
} envdev_t;
@@ -49,16 +50,13 @@ static envdev_t envdevices[2];
static int curdev;
#define DEVNAME(i) envdevices[(i)].devname
#define DEVOFFSET(i) envdevices[(i)].devoff
#define ENVSIZE(i) envdevices[(i)].env_size
#define DEVESIZE(i) envdevices[(i)].erase_size
#define CFG_ENV_SIZE ENVSIZE(curdev)
#ifdef HAVE_REDUND
#define ENV_SIZE (CFG_ENV_SIZE - sizeof(long) - 1)
#else
#define ENV_SIZE (CFG_ENV_SIZE - sizeof(long))
#endif
#define ENV_SIZE getenvsize()
typedef struct environment_s {
ulong crc; /* CRC32 over data bytes */
@@ -67,46 +65,103 @@ typedef struct environment_s {
} env_t;
static env_t environment;
static int valid = 0;
#ifdef HAVE_REDUND
static int HaveRedundEnv = 0;
static uchar active_flag = 1;
static uchar obsolete_flag = 0;
#endif
#define XMK_STR(x) #x
#define MK_STR(x) XMK_STR(x)
static uchar default_environment[] = {
#ifdef CONFIG_BOOTARGS
#if defined(CONFIG_BOOTARGS)
"bootargs=" CONFIG_BOOTARGS "\0"
#endif
#ifdef CONFIG_BOOTCOMMAND
#if defined(CONFIG_BOOTCOMMAND)
"bootcmd=" CONFIG_BOOTCOMMAND "\0"
#endif
#if (CONFIG_BOOTDELAY >= 0)
#if defined(CONFIG_RAMBOOTCOMMAND)
"ramboot=" CONFIG_RAMBOOTCOMMAND "\0"
#endif
#if defined(CONFIG_NFSBOOTCOMMAND)
"nfsboot=" CONFIG_NFSBOOTCOMMAND "\0"
#endif
#if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
"bootdelay=" MK_STR(CONFIG_BOOTDELAY) "\0"
#endif
#if (CONFIG_BAUDRATE >= 0)
#if defined(CONFIG_BAUDRATE) && (CONFIG_BAUDRATE >= 0)
"baudrate=" MK_STR(CONFIG_BAUDRATE) "\0"
#endif
#ifdef CONFIG_LOADS_ECHO
"loads_echo=" MK_STR(CONFIG_LOADS_ECHO) "\0"
#endif
#ifdef CONFIG_ETHADDR
"ethaddr=" MK_STR(CONFIG_ETHADDR) "\0"
#endif
#ifdef CONFIG_ETH1ADDR
"eth1addr=" MK_STR(CONFIG_ETH1ADDR) "\0"
#endif
#ifdef CONFIG_ETH2ADDR
"eth2addr=" MK_STR(CONFIG_ETH2ADDR) "\0"
#endif
#ifdef CONFIG_ETHPRIME
"ethprime=" CONFIG_ETHPRIME "\0"
#endif
#ifdef CONFIG_IPADDR
"ipaddr=" MK_STR(CONFIG_IPADDR) "\0"
#endif
#ifdef CONFIG_SERVERIP
"serverip=" MK_STR(CONFIG_SERVERIP) "\0"
#endif
"\0"
#ifdef CFG_AUTOLOAD
"autoload=" CFG_AUTOLOAD "\0"
#endif
#ifdef CONFIG_ROOTPATH
"rootpath=" MK_STR(CONFIG_ROOTPATH) "\0"
#endif
#ifdef CONFIG_GATEWAYIP
"gatewayip=" MK_STR(CONFIG_GATEWAYIP) "\0"
#endif
#ifdef CONFIG_NETMASK
"netmask=" MK_STR(CONFIG_NETMASK) "\0"
#endif
#ifdef CONFIG_HOSTNAME
"hostname=" MK_STR(CONFIG_HOSTNAME) "\0"
#endif
#ifdef CONFIG_BOOTFILE
"bootfile=" MK_STR(CONFIG_BOOTFILE) "\0"
#endif
#ifdef CONFIG_LOADADDR
"loadaddr=" MK_STR(CONFIG_LOADADDR) "\0"
#endif
#ifdef CONFIG_PREBOOT
"preboot=" CONFIG_PREBOOT "\0"
#endif
#ifdef CONFIG_CLOCKS_IN_MHZ
"clocks_in_mhz=" "1" "\0"
#endif
#ifdef CONFIG_EXTRA_ENV_SETTINGS
CONFIG_EXTRA_ENV_SETTINGS
#endif
"\0" /* Termimate env_t data with 2 NULs */
};
static int flash_io (int mode);
static uchar *envmatch(uchar *s1, uchar *s2);
static int env_init(void);
static int parse_config(void);
#if defined(CONFIG_FILE)
static int get_config(char *);
#endif
static inline ulong getenvsize(void)
{
ulong rc = CFG_ENV_SIZE - sizeof(long);
if (HaveRedundEnv)
rc -= sizeof(char);
return rc;
}
/*
* Search the environment for a variable.
@@ -338,34 +393,37 @@ static int flash_io (int mode)
return (-1);
}
len = sizeof(environment.crc) + sizeof(environment.flags);
len = sizeof(environment.crc);
if (HaveRedundEnv) {
len += sizeof(environment.flags);
}
if (mode == O_RDWR) {
#ifdef HAVE_REDUND
/* switch to next partition for writing */
otherdev = !curdev;
if ((fdr = open(DEVNAME(otherdev), mode)) < 0) {
fprintf (stderr,
"Can't open %s: %s\n",
DEVNAME(otherdev), strerror(errno));
return (-1);
if (HaveRedundEnv) {
/* switch to next partition for writing */
otherdev = !curdev;
if ((fdr = open(DEVNAME(otherdev), mode)) < 0) {
fprintf (stderr,
"Can't open %s: %s\n",
DEVNAME(otherdev), strerror(errno));
return (-1);
}
} else {
otherdev = curdev;
fdr = fd;
}
#else
otherdev = curdev;
fdr = fd;
len = sizeof(environment.crc);
#endif
printf("Unlocking flash...\n");
erase.length = DEVESIZE(otherdev);
erase.start = 0;
erase.start = DEVOFFSET(otherdev);
ioctl (fdr, MEMUNLOCK, &erase);
#ifdef HAVE_REDUND
erase.length = DEVESIZE(curdev);
erase.start = 0;
ioctl (fd, MEMUNLOCK, &erase);
environment.flags = active_flag;
#endif
if (HaveRedundEnv) {
erase.length = DEVESIZE(curdev);
erase.start = DEVOFFSET(curdev);
ioctl (fd, MEMUNLOCK, &erase);
environment.flags = active_flag;
}
printf("Done\n");
resid = DEVESIZE(otherdev) - CFG_ENV_SIZE;
if (resid) {
@@ -375,22 +433,16 @@ static int flash_io (int mode)
resid, strerror(errno));
return (-1);
}
if (lseek (fdr, CFG_ENV_SIZE, SEEK_SET) == -1) {
if (lseek (fdr, DEVOFFSET(otherdev) + CFG_ENV_SIZE, SEEK_SET) == -1) {
fprintf (stderr,
"seek error on %s: %s\n",
DEVNAME(curdev), strerror(errno));
DEVNAME(otherdev), strerror(errno));
return (-1);
}
if ((rc = read (fdr, data, resid)) != resid) {
fprintf (stderr,
"read error on %s: %s\n",
DEVNAME(curdev), strerror(errno));
return (-1);
}
if (lseek (fdr, 0, SEEK_SET) == -1) {
fprintf (stderr,
"seek error on %s: %s\n",
DEVNAME(curdev), strerror(errno));
DEVNAME(otherdev), strerror(errno));
return (-1);
}
}
@@ -398,6 +450,7 @@ static int flash_io (int mode)
printf("Erasing old environment...\n");
erase.length = DEVESIZE(otherdev);
erase.start = DEVOFFSET(otherdev);
if (ioctl (fdr, MEMERASE, &erase) != 0) {
fprintf (stderr, "MTD erase error on %s: %s\n",
DEVNAME(otherdev), strerror(errno));
@@ -407,6 +460,12 @@ static int flash_io (int mode)
printf("Done\n");
printf("Writing environment to %s...\n",DEVNAME(otherdev));
if (lseek (fdr, DEVOFFSET(otherdev), SEEK_SET) == -1) {
fprintf (stderr,
"seek error on %s: %s\n",
DEVNAME(otherdev), strerror(errno));
return (-1);
}
if (write(fdr, &environment, len) != len) {
fprintf (stderr,
"CRC write error on %s: %s\n",
@@ -428,43 +487,47 @@ static int flash_io (int mode)
}
free(data);
}
#ifdef HAVE_REDUND
/* change flag on current active env partition */
if (lseek (fd, sizeof(ulong), SEEK_SET) == -1) {
fprintf (stderr,
"seek error on %s: %s\n",
DEVNAME(curdev), strerror(errno));
return (-1);
if (HaveRedundEnv) {
/* change flag on current active env partition */
if (lseek (fd, DEVOFFSET(curdev) + sizeof(ulong), SEEK_SET) == -1) {
fprintf (stderr,
"seek error on %s: %s\n",
DEVNAME(curdev), strerror(errno));
return (-1);
}
if (write (fd, &obsolete_flag, sizeof(obsolete_flag)) !=
sizeof(obsolete_flag)) {
fprintf (stderr,
"Write error on %s: %s\n",
DEVNAME(curdev), strerror(errno));
return (-1);
}
}
if (write (fd, &obsolete_flag, sizeof(obsolete_flag)) !=
sizeof(obsolete_flag)) {
fprintf (stderr,
"Write error on %s: %s\n",
DEVNAME(curdev), strerror(errno));
return (-1);
}
#endif
printf("Done\n");
printf("Locking ...\n");
erase.length = DEVESIZE(otherdev);
erase.start = 0;
erase.start = DEVOFFSET(otherdev);
ioctl (fdr, MEMLOCK, &erase);
#ifdef HAVE_REDUND
erase.length = DEVESIZE(curdev);
erase.start = 0;
ioctl (fd, MEMLOCK, &erase);
if (close(fdr)) {
fprintf (stderr,
"I/O error on %s: %s\n",
DEVNAME(otherdev), strerror(errno));
return (-1);
if (HaveRedundEnv) {
erase.length = DEVESIZE(curdev);
erase.start = DEVOFFSET(curdev);
ioctl (fd, MEMLOCK, &erase);
if (close(fdr)) {
fprintf (stderr,
"I/O error on %s: %s\n",
DEVNAME(otherdev), strerror(errno));
return (-1);
}
}
#endif
printf("Done\n");
} else {
#ifndef HAVE_REDUND
len = sizeof(environment.crc);
#endif
if (lseek (fd, DEVOFFSET(curdev), SEEK_SET) == -1) {
fprintf (stderr,
"seek error on %s: %s\n",
DEVNAME(curdev), strerror(errno));
return (-1);
}
if (read (fd, &environment, len) != len) {
fprintf (stderr,
"CRC read error on %s: %s\n",
@@ -515,56 +578,52 @@ static int env_init(void)
{
int crc1, crc1_ok;
uchar *addr1;
#ifdef HAVE_REDUND
int crc2, crc2_ok;
uchar flag1, flag2, *addr2;
#endif
if (parse_config()) /* should fill envdevices */
return 1;
if (!valid) {
if (parse_config()) /* should fill envdevices */
return 1;
if ((addr1 = calloc (1, ENV_SIZE)) == NULL) {
fprintf (stderr,
"Not enough memory for environment (%ld bytes)\n",
ENV_SIZE);
return (errno);
}
/* read environment from FLASH to local buffer */
environment.data = addr1;
curdev = 0;
if (flash_io (O_RDONLY)) {
return (errno);
}
crc1_ok = ((crc1 = crc32(0, environment.data, ENV_SIZE))
== environment.crc);
#ifndef HAVE_REDUND
if ((addr1 = calloc (1, ENV_SIZE)) == NULL) {
fprintf (stderr,
"Not enough memory for environment (%ld bytes)\n",
ENV_SIZE);
return (errno);
}
/* read environment from FLASH to local buffer */
environment.data = addr1;
curdev = 0;
if (flash_io (O_RDONLY)) {
return (errno);
}
crc1_ok = ((crc1 = crc32(0, environment.data, ENV_SIZE))
== environment.crc);
if (!HaveRedundEnv) {
if (!crc1_ok) {
fprintf (stderr,
"Warning: Bad CRC, using default environment\n");
"Warning: Bad CRC, using default environment\n");
environment.data = default_environment;
free(addr1);
}
#else
} else {
flag1 = environment.flags;
curdev = 1;
if ((addr2 = calloc (1, ENV_SIZE)) == NULL) {
fprintf (stderr,
"Not enough memory for environment (%ld bytes)\n",
ENV_SIZE);
"Not enough memory for environment (%ld bytes)\n",
ENV_SIZE);
return (errno);
}
environment.data = addr2;
if (flash_io (O_RDONLY)) {
return (errno);
}
crc2_ok = ((crc2 = crc32(0, environment.data, ENV_SIZE))
== environment.crc);
flag2 = environment.flags;
@@ -585,7 +644,7 @@ static int env_init(void)
}
else if (! crc1_ok && ! crc2_ok) {
fprintf (stderr,
"Warning: Bad CRC, using default environment\n");
"Warning: Bad CRC, using default environment\n");
environment.data = default_environment;
curdev = 0;
free(addr2);
@@ -626,8 +685,6 @@ static int env_init(void)
curdev = 1;
free(addr1);
}
#endif
valid = 1;
}
return (0);
}
@@ -637,26 +694,75 @@ static int parse_config()
{
struct stat st;
if (stat (DEVICE1_NAME, &st)) {
fprintf (stderr,
"Cannot access MTD device %s: %s\n",
DEVICE1_NAME, strerror(errno));
#if defined(CONFIG_FILE)
/* Fills in DEVNAME(), ENVSIZE(), DEVESIZE(). Or don't. */
if (get_config(CONFIG_FILE)) {
fprintf (stderr,
"Cannot parse config file: %s\n",
strerror(errno));
return 1;
}
#else
strcpy(DEVNAME(0), DEVICE1_NAME);
DEVOFFSET(0) = DEVICE1_OFFSET;
ENVSIZE(0) = ENV1_SIZE;
DEVESIZE(0) = DEVICE1_ESIZE;
#ifdef HAVE_REDUND
if (stat (DEVICE2_NAME, &st)) {
fprintf (stderr,
"Cannot access MTD device %s: %s\n",
DEVICE2_NAME, strerror(errno));
return 1;
}
strcpy(DEVNAME(1), DEVICE2_NAME);
DEVOFFSET(1) = DEVICE2_OFFSET;
ENVSIZE(1) = ENV2_SIZE;
DEVESIZE(1) = DEVICE2_ESIZE;
HaveRedundEnv = 1;
#endif
#endif
if (stat (DEVNAME(0), &st)) {
fprintf (stderr,
"Cannot access MTD device %s: %s\n",
DEVNAME(0), strerror(errno));
return 1;
}
if (HaveRedundEnv && stat (DEVNAME(1), &st)) {
fprintf (stderr,
"Cannot access MTD device %s: %s\n",
DEVNAME(2), strerror(errno));
return 1;
}
return 0;
}
#if defined(CONFIG_FILE)
static int get_config (char *fname)
{
FILE *fp;
int i = 0;
int rc;
char dump[128];
if ((fp = fopen(fname, "r")) == NULL) {
return 1;
}
while ((i < 2) &&
((rc = fscanf (fp, "%s %lx %lx %lx",
DEVNAME(i), &DEVOFFSET(i), &ENVSIZE(i), &DEVESIZE(i))) != EOF)) {
/* Skip incomplete conversions and comment strings */
if ((rc < 3) || (*DEVNAME(i) == '#')) {
fgets (dump, sizeof(dump), fp); /* Consume till end */
continue;
}
i++;
}
fclose(fp);
HaveRedundEnv = i - 1;
if (!i) { /* No valid entries found */
errno = EINVAL;
return 1;
} else
return 0;
}
#endif

7
tools/env/fw_env.config vendored Normal file
View File

@@ -0,0 +1,7 @@
# Configuration file for fw_(printenv/saveenv) utility.
# Up to two entries are valid, in this case the redundand
# environment sector is assumed present.
# MTD device name Device offset Env. size Flash sector size
/dev/mtd1 0x0000 0x4000 0x4000
/dev/mtd2 0x0000 0x4000 0x4000

10
tools/env/fw_env.h vendored
View File

@@ -21,11 +21,21 @@
* MA 02111-1307 USA
*/
/*
* To build the utility with the run-time configuration
* uncomment the next line.
* See included "fw_env.config" sample file (TRAB board)
* for notes on configuration.
*/
/*#define CONFIG_FILE "/etc/fw_env.config" */
#define HAVE_REDUND /* For systems with 2 env sectors */
#define DEVICE1_NAME "/dev/mtd1"
#define DEVICE2_NAME "/dev/mtd2"
#define DEVICE1_OFFSET 0x0000
#define ENV1_SIZE 0x4000
#define DEVICE1_ESIZE 0x4000
#define DEVICE2_OFFSET 0x0000
#define ENV2_SIZE 0x4000
#define DEVICE2_ESIZE 0x4000