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authorWolfgang Denk <wd@pollux.denx.de>2005-09-14 23:53:32 +0200
committerWolfgang Denk <wd@pollux.denx.de>2005-09-14 23:53:32 +0200
commitac7eb8a315e25863637a8d2c02af18815458b63f (patch)
treea01c125dab82468e09789d2a919e59e45b4a12fc /board/netstar/eeprom.c
parent05b47540aae996908e48e10a5ff8b69862aadef3 (diff)
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Update of new NAND code
Patch by Ladislav Michl, 13 Sep 2005
Diffstat (limited to 'board/netstar/eeprom.c')
-rw-r--r--board/netstar/eeprom.c215
1 files changed, 215 insertions, 0 deletions
diff --git a/board/netstar/eeprom.c b/board/netstar/eeprom.c
new file mode 100644
index 0000000..fef3822
--- /dev/null
+++ b/board/netstar/eeprom.c
@@ -0,0 +1,215 @@
+/*
+ * (C) Copyright 2005
+ * Ladislav Michl, 2N Telekomunikace, michl@2n.cz
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ * Some code shamelessly stolen back from Robin Getz.
+ */
+
+#define DEBUG
+
+#include <common.h>
+#include <exports.h>
+#include "../drivers/smc91111.h"
+
+#define SMC_BASE_ADDRESS CONFIG_SMC91111_BASE
+
+static u16 read_eeprom_reg(u16 reg)
+{
+ int timeout;
+
+ SMC_SELECT_BANK(2);
+ SMC_outw(reg, PTR_REG);
+
+ SMC_SELECT_BANK(1);
+ SMC_outw(SMC_inw (CTL_REG) | CTL_EEPROM_SELECT | CTL_RELOAD,
+ CTL_REG);
+ timeout = 100;
+ while((SMC_inw (CTL_REG) & CTL_RELOAD) && --timeout)
+ udelay(100);
+ if (timeout == 0) {
+ printf("Timeout Reading EEPROM register %02x\n", reg);
+ return 0;
+ }
+
+ return SMC_inw (GP_REG);
+}
+
+static int write_eeprom_reg(u16 value, u16 reg)
+{
+ int timeout;
+
+ SMC_SELECT_BANK(2);
+ SMC_outw(reg, PTR_REG);
+
+ SMC_SELECT_BANK(1);
+ SMC_outw(value, GP_REG);
+ SMC_outw(SMC_inw (CTL_REG) | CTL_EEPROM_SELECT | CTL_STORE, CTL_REG);
+ timeout = 100;
+ while ((SMC_inw(CTL_REG) & CTL_STORE) && --timeout)
+ udelay (100);
+ if (timeout == 0) {
+ printf("Timeout Writing EEPROM register %02x\n", reg);
+ return 0;
+ }
+
+ return 1;
+}
+
+static int write_data(u16 *buf, int len)
+{
+ u16 reg = 0x23;
+
+ while (len--)
+ write_eeprom_reg(*buf++, reg++);
+
+ return 0;
+}
+
+static int verify_macaddr(char *s)
+{
+ u16 reg;
+ int i, err = 0;
+
+ printf("MAC Address: ");
+ err = i = 0;
+ for (i = 0; i < 3; i++) {
+ reg = read_eeprom_reg(0x20 + i);
+ printf("%02x:%02x%c", reg & 0xff, reg >> 8, i != 2 ? ':' : '\n');
+ if (s)
+ err |= reg != ((u16 *)s)[i];
+ }
+
+ return err ? 0 : 1;
+}
+
+static int set_mac(char *s)
+{
+ int i;
+ char *e, eaddr[6];
+
+ /* turn string into mac value */
+ for (i = 0; i < 6; i++) {
+ eaddr[i] = simple_strtoul(s, &e, 16);
+ s = (*e) ? e+1 : e;
+ }
+
+ for (i = 0; i < 3; i++)
+ write_eeprom_reg(*(((u16 *)eaddr) + i), 0x20 + i);
+
+ return 0;
+}
+
+static int parse_element(char *s, unsigned char *buf, int len)
+{
+ int cnt;
+ char *p, num[3];
+ unsigned char id;
+
+ id = simple_strtoul(s, &p, 16);
+ if (*p++ != ':')
+ return -1;
+ cnt = 2;
+ num[2] = 0;
+ for (; *p; p += 2) {
+ if (p[1] == 0)
+ return -2;
+ if (cnt + 3 > len)
+ return -3;
+ num[0] = p[0];
+ num[1] = p[1];
+ buf[cnt++] = simple_strtoul(num, NULL, 16);
+ }
+ buf[0] = id;
+ buf[1] = cnt - 2;
+
+ return cnt;
+}
+
+extern int crcek(void);
+
+int eeprom(int argc, char *argv[])
+{
+ int i, len, ret;
+ unsigned char buf[58], *p;
+
+ app_startup(argv);
+ if (get_version() != XF_VERSION) {
+ printf("Wrong XF_VERSION.\n");
+ printf("Application expects ABI version %d\n", XF_VERSION);
+ printf("Actual U-Boot ABI version %d\n", (int)get_version());
+ return 1;
+ }
+
+ return crcek();
+
+ if ((SMC_inw (BANK_SELECT) & 0xFF00) != 0x3300) {
+ printf("SMSC91111 not found.\n");
+ return 2;
+ }
+
+ /* Called without parameters - print MAC address */
+ if (argc < 2) {
+ verify_macaddr(NULL);
+ return 0;
+ }
+
+ /* Print help message */
+ if (argv[1][1] == 'h') {
+ printf("VoiceBlue EEPROM writer\n");
+ printf("Built: %s at %s\n", __DATE__ , __TIME__ );
+ printf("Usage:\n\t<mac_address> [<element_1>] [<...>]\n");
+ return 0;
+ }
+
+ /* Try to parse information elements */
+ len = sizeof(buf);
+ p = buf;
+ for (i = 2; i < argc; i++) {
+ ret = parse_element(argv[i], p, len);
+ switch (ret) {
+ case -1:
+ printf("Element %d: malformed\n", i - 1);
+ return 3;
+ case -2:
+ printf("Element %d: odd character count\n", i - 1);
+ return 3;
+ case -3:
+ printf("Out of EEPROM memory\n");
+ return 3;
+ default:
+ p += ret;
+ len -= ret;
+ }
+ }
+
+ /* First argument (MAC) is mandatory */
+ set_mac(argv[1]);
+ if (verify_macaddr(argv[1])) {
+ printf("*** MAC address does not match! ***\n");
+ return 4;
+ }
+
+ while (len--)
+ *p++ = 0;
+
+ write_data((u16 *)buf, sizeof(buf) >> 1);
+
+ return 0;
+}