Merge the new NAND code (testing-NAND brach); see doc/README.nand

Rewrite of NAND code based on what is in 2.6.12 Linux kernel
Patch by Ladislav Michl, 29 Jun 2005

[Merge with /home/tur/nand/u-boot]

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;
+}