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Diffstat (limited to 'board/hymod/eeprom.c')
-rw-r--r--board/hymod/eeprom.c171
1 files changed, 92 insertions, 79 deletions
diff --git a/board/hymod/eeprom.c b/board/hymod/eeprom.c
index 01e145398e..15eb48e103 100644
--- a/board/hymod/eeprom.c
+++ b/board/hymod/eeprom.c
@@ -39,62 +39,61 @@ hymod_eeprom_load (int which, hymod_eeprom_t *ep)
unsigned dev_addr = CFG_I2C_EEPROM_ADDR | \
(which ? HYMOD_EEOFF_MEZZ : HYMOD_EEOFF_MAIN);
unsigned offset = 0;
- uchar data[HYMOD_EEPROM_SIZE], *dp, *edp;
- hymod_eehdr_t *hp;
+ uchar data[HYMOD_EEPROM_MAXLEN], *dp, *edp;
+ hymod_eehdr_t hdr;
ulong len, crc;
memset (ep, 0, sizeof *ep);
- memset (data, 0, HYMOD_EEPROM_SIZE);
- crc = 0;
- hp = (hymod_eehdr_t *)data;
- eeprom_read (dev_addr, offset, (uchar *)hp, sizeof (*hp));
- offset += sizeof (*hp);
+ eeprom_read (dev_addr, offset, (uchar *)&hdr, sizeof (hdr));
+ offset += sizeof (hdr);
- if (hp->id != HYMOD_EEPROM_ID || hp->ver > HYMOD_EEPROM_VER ||
- (len = hp->len) > HYMOD_EEPROM_MAXLEN)
+ if (hdr.id != HYMOD_EEPROM_ID || hdr.ver > HYMOD_EEPROM_VER ||
+ (len = hdr.len) > HYMOD_EEPROM_MAXLEN)
return (0);
- dp = (uchar *)(hp + 1); edp = dp + len;
- eeprom_read (dev_addr, offset, dp, len);
+ eeprom_read (dev_addr, offset, data, len);
offset += len;
eeprom_read (dev_addr, offset, (uchar *)&crc, sizeof (ulong));
+ offset += sizeof (ulong);
- if (crc32 (0, data, edp - data) != crc)
+ if (crc32 (crc32 (0, (char *)&hdr, sizeof hdr), data, len) != crc)
return (0);
- ep->ver = hp->ver;
+ ep->ver = hdr.ver;
+ dp = data; edp = dp + len;
for (;;) {
- hymod_eerec_t *rp = (hymod_eerec_t *)dp;
ulong rtyp;
uchar rlen, *rdat;
- uint rsiz;
- if (rp->small.topbit == 0) {
- rtyp = rp->small.type;
- rlen = rp->small.len;
- rdat = rp->small.data;
- rsiz = offsetof (hymod_eerec_t, small.data) + rlen;
- }
- else if (rp->medium.nxtbit == 0) {
- rtyp = rp->medium.type;
- rlen = rp->medium.len;
- rdat = rp->medium.data;
- rsiz = offsetof (hymod_eerec_t, medium.data) + rlen;
- }
+ rtyp = *dp++;
+ if ((rtyp & 0x80) == 0)
+ rlen = *dp++;
else {
- rtyp = rp->large.type;
- rlen = rp->large.len;
- rdat = rp->large.data;
- rsiz = offsetof (hymod_eerec_t, large.data) + rlen;
+ uchar islarge = rtyp & 0x40;
+
+ rtyp = ((rtyp & 0x3f) << 8) | *dp++;
+ if (islarge) {
+ rtyp = (rtyp << 8) | *dp++;
+ rtyp = (rtyp << 8) | *dp++;
+ }
+
+ rlen = *dp++;
+ rlen = (rlen << 8) | *dp++;
+ if (islarge) {
+ rlen = (rlen << 8) | *dp++;
+ rlen = (rlen << 8) | *dp++;
+ }
}
if (rtyp == 0)
break;
- dp += rsiz;
+ rdat = dp;
+ dp += rlen;
+
if (dp > edp) /* error? */
break;
@@ -102,12 +101,20 @@ hymod_eeprom_load (int which, hymod_eeprom_t *ep)
case HYMOD_EEREC_SERNO: /* serial number */
if (rlen == sizeof (ulong))
- memcpy (&ep->serno, rdat, sizeof (ulong));
+ ep->serno = \
+ ((ulong)rdat[0] << 24) | \
+ ((ulong)rdat[1] << 16) | \
+ ((ulong)rdat[2] << 8) | \
+ (ulong)rdat[3];
break;
case HYMOD_EEREC_DATE: /* date */
- if (rlen == sizeof (hymod_date_t))
- memcpy (&ep->date, rdat, sizeof (hymod_date_t));
+ if (rlen == sizeof (hymod_date_t)) {
+ ep->date.year = ((ushort)rdat[0] << 8) | \
+ (ushort)rdat[1];
+ ep->date.month = rdat[2];
+ ep->date.day = rdat[3];
+ }
break;
case HYMOD_EEREC_BATCH: /* batch */
@@ -250,18 +257,13 @@ eerec_map_t;
static uchar *
uint_handler (eerec_map_t *rp, uchar *val, uchar *dp, uchar *edp)
{
- uchar *eval;
- union {
- uchar cval[4];
- ushort sval[2];
- ulong lval;
- } rdata;
+ char *eval;
+ ulong lval;
- rdata.lval = simple_strtol (val, (char **)&eval, 10);
+ lval = simple_strtol (val, &eval, 10);
- if (eval == val || *eval != '\0') {
- printf ("%s rec (%s) is not a valid uint\n",
- rp->name, val);
+ if ((uchar *)eval == val || *eval != '\0') {
+ printf ("%s rec (%s) is not a valid uint\n", rp->name, val);
return (NULL);
}
@@ -276,27 +278,29 @@ uint_handler (eerec_map_t *rp, uchar *val, uchar *dp, uchar *edp)
switch (rp->length) {
case 1:
- if (rdata.lval >= 256) {
+ if (lval >= 256) {
printf ("%s rec value (%lu) out of range (0-255)\n",
- rp->name, rdata.lval);
+ rp->name, lval);
return (NULL);
}
- *dp++ = rdata.cval[3];
+ *dp++ = lval;
break;
case 2:
- if (rdata.lval >= 65536) {
+ if (lval >= 65536) {
printf ("%s rec value (%lu) out of range (0-65535)\n",
- rp->name, rdata.lval);
+ rp->name, lval);
return (NULL);
}
- memcpy (dp, &rdata.sval[1], 2);
- dp += 2;
+ *dp++ = lval >> 8;
+ *dp++ = lval;
break;
case 4:
- memcpy (dp, &rdata.lval, 4);
- dp += 4;
+ *dp++ = lval >> 24;
+ *dp++ = lval >> 16;
+ *dp++ = lval >> 8;
+ *dp++ = lval;
break;
default:
@@ -311,32 +315,41 @@ static uchar *
date_handler (eerec_map_t *rp, uchar *val, uchar *dp, uchar *edp)
{
hymod_date_t date;
- uchar *p = val, *ep;
+ uchar *p = val;
+ char *ep;
+ ulong lval;
- date.year = simple_strtol (p, (char **)&ep, 10);
- if (ep == p || *ep++ != '-') {
+ lval = simple_strtol (p, &ep, 10);
+ if ((uchar *)ep == p || *ep++ != '-') {
bad_date:
printf ("%s rec (%s) is not a valid date\n", rp->name, val);
return (NULL);
}
+ if (lval >= 65536)
+ goto bad_date;
+ date.year = lval;
- date.month = simple_strtol (p = ep, (char **)&ep, 10);
- if (ep == p || *ep++ != '-' || date.month == 0 || date.month > 12)
+ lval = simple_strtol (p = ep, &ep, 10);
+ if ((uchar *)ep == p || *ep++ != '-' || lval == 0 || lval > 12)
goto bad_date;
+ date.month = lval;
- date.day = simple_strtol (p = ep, (char **)&ep, 10);
- if (ep == p || *ep != '\0' || date.day == 0 || date.day > 31)
+ lval = simple_strtol (p = ep, &ep, 10);
+ if ((uchar *)ep == p || *ep != '\0' || lval == 0 || lval > 31)
goto bad_date;
+ date.day = lval;
- if (dp + 2 + sizeof (hymod_date_t) > edp) {
+ if (dp + 2 + rp->length > edp) {
printf ("can't fit %s rec into eeprom\n", rp->name);
return (NULL);
}
*dp++ = rp->type;
- *dp++ = sizeof (hymod_date_t);
- memcpy (dp, &date, sizeof (hymod_date_t));
- dp += sizeof (hymod_date_t);
+ *dp++ = rp->length;
+ *dp++ = date.year >> 8;
+ *dp++ = date.year;
+ *dp++ = date.month;
+ *dp++ = date.day;
return (dp);
}
@@ -368,29 +381,28 @@ string_handler (eerec_map_t *rp, uchar *val, uchar *dp, uchar *edp)
static uchar *
bytes_handler (eerec_map_t *rp, uchar *val, uchar *dp, uchar *edp)
{
- uchar bytes[HYMOD_MAX_BYTES], nbytes = 0;
- uchar *p = val, *ep;
+ uchar bytes[HYMOD_MAX_BYTES], nbytes, *p;
+ char *ep;
- for (;;) {
+ for (nbytes = 0, p = val; *p != '\0'; p = (uchar *)ep) {
+ ulong lval;
- if (nbytes >= HYMOD_MAX_BYTES) {
- printf ("%s rec (%s) byte array too long\n",
+ lval = simple_strtol (p, &ep, 10);
+ if ((uchar *)ep == p || (*ep != '\0' && *ep != ',') || \
+ lval >= 256) {
+ printf ("%s rec (%s) byte array has invalid uint\n",
rp->name, val);
return (NULL);
}
-
- bytes[nbytes++] = simple_strtol (p, (char **)&ep, 10);
-
- if (ep == p || (*ep != '\0' && *ep != ',')) {
- printf ("%s rec (%s) byte array has invalid uint\n",
+ if (nbytes >= HYMOD_MAX_BYTES) {
+ printf ("%s rec (%s) byte array too long\n",
rp->name, val);
return (NULL);
}
+ bytes[nbytes++] = lval;
- if (*ep++ == '\0')
- break;
-
- p = ep;
+ if (*ep != '\0')
+ ep++;
}
if (dp + 2 + nbytes > edp) {
@@ -459,6 +471,7 @@ hymod_eeprom_fetch(int which, char *filename, ulong addr)
hymod_eehdr_t *hp = (hymod_eehdr_t *)&data[0];
ulong crc;
+ memset (hp, 0, sizeof *hp);
hp->id = HYMOD_EEPROM_ID;
hp->ver = HYMOD_EEPROM_VER;
generated by cgit v1.2.3 (git 2.0.4) at 2024-05-23 16:23:06 +0000