upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
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u-boot/board/hymod/env.c

221 lines
4.2 KiB

/*
* (C) Copyright 2003
* Murray Jensen, CSIRO-MIT, <Murray.Jensen@csiro.au>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <linux/ctype.h>
DECLARE_GLOBAL_DATA_PTR;
/* imports from fetch.c */
extern int fetch_and_parse (char *, ulong, int (*)(uchar *, uchar *));
/* this is relative to the root of the server's tftp directory */
static char *def_global_env_path = "/hymod/global_env";
static int
env_callback (uchar *name, uchar *value)
{
hymod_conf_t *cp = &gd->bd->bi_hymod_conf;
char ov[CONFIG_SYS_CBSIZE], nv[CONFIG_SYS_CBSIZE], *p, *q, *nn, c, *curver, *newver;
int override = 1, append = 0, remove = 0, nnl, ovl, nvl;
nn = (char *)name;
if (*nn == '-') {
override = 0;
nn++;
}
while (isblank(*nn))
nn++;
if ((nnl = strlen (nn)) == 0) {
printf ("Empty name in global env file\n");
return (0);
}
if ((c = nn[nnl - 1]) == '+' || c == '-') {
if (c == '+')
append = 1;
else
remove = 1;
nn[--nnl] = '\0';
}
while (nnl > 0 && isblank(nn[nnl - 1]))
nn[--nnl] = '\0';
if (nnl == 0) {
printf ("Empty name in global env file\n");
return (0);
}
p = (char *)value;
q = nv;
while (isblank(*p))
p++;
nvl = strlen (p);
while (nvl > 0 && isblank(p[nvl - 1]))
p[--nvl] = '\0';
while ((*q = *p++) != '\0') {
if (*q == '%') {
switch (*p++) {
case '\0': /* whoops - back up */
p--;
break;
case '%': /* a single percent character */
q++;
break;
case 's': /* main board serial number as string */
q += sprintf (q, "%010lu",
cp->main.eeprom.serno);
break;
case 'S': /* main board serial number as number */
q += sprintf (q, "%lu", cp->main.eeprom.serno);
break;
default: /* ignore any others */
break;
}
}
else
q++;
}
if ((nvl = q - nv) == 0) {
setenv (nn, NULL);
return (1);
}
if ((curver = getenv ("global_env_version")) == NULL)
curver = "unknown";
if ((newver = getenv ("new_genv_version")) == NULL || \
strcmp (curver, newver) == 0) {
if (strcmp (nn, "version") == 0)
setenv ("new_genv_version", nv);
return (1);
}
if ((p = getenv (nn)) != NULL) {
strcpy (ov, p);
ovl = strlen (ov);
if (append) {
if (strstr (ov, nv) == NULL) {
printf ("Appending '%s' to env var '%s'\n",
nv, nn);
while (nvl >= 0) {
nv[ovl + 1 + nvl] = nv[nvl];
nvl--;
}
nv[ovl] = ' ';
while (--ovl >= 0)
nv[ovl] = ov[ovl];
setenv (nn, nv);
}
return (1);
}
if (remove) {
if (strstr (ov, nv) != NULL) {
printf ("Removing '%s' from env var '%s'\n",
nv, nn);
while ((p = strstr (ov, nv)) != NULL) {
q = p + nvl;
if (*q == ' ')
q++;
strcpy(p, q);
}
setenv (nn, ov);
}
return (1);
}
if (!override || strcmp (ov, nv) == 0)
return (1);
printf ("Re-setting env cmd '%s' from '%s' to '%s'\n",
nn, ov, nv);
}
else
printf ("Setting env cmd '%s' to '%s'\n", nn, nv);
setenv (nn, nv);
return (1);
}
void
hymod_check_env (void)
{
char *p, *path, *curver, *newver;
int firsttime = 0, needsave = 0;
if (getenv ("global_env_loaded") == NULL) {
puts ("*** global environment has never been loaded\n");
puts ("*** fetching from server");
firsttime = 1;
}
else if ((p = getenv ("always_check_env")) != NULL &&
strcmp (p, "yes") == 0)
puts ("*** checking for updated global environment");
else
return;
puts (" (Control-C to Abort)\n");
if ((path = getenv ("global_env_path")) == NULL || *path == '\0')
path = def_global_env_path;
if (fetch_and_parse (path, CONFIG_SYS_LOAD_ADDR, env_callback) == 0) {
puts ("*** Fetch of global environment failed!\n");
return;
}
if ((newver = getenv ("new_genv_version")) == NULL) {
puts ("*** Version number not set - contents ignored!\n");
return;
}
if ((curver = getenv ("global_env_version")) == NULL || \
strcmp (curver, newver) != 0) {
setenv ("global_env_version", newver);
needsave = 1;
}
else
printf ("*** Global environment up-to-date (ver %s)\n", curver);
setenv ("new_genv_version", NULL);
if (firsttime) {
setenv ("global_env_loaded", "yes");
needsave = 1;
}
if (needsave)
puts ("\n*** Remember to run the 'saveenv' "
"command to save the changes\n\n");
}