diff options
Diffstat (limited to 'u-boot/board/netstar/eeprom.c')
| -rw-r--r-- | u-boot/board/netstar/eeprom.c | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/u-boot/board/netstar/eeprom.c b/u-boot/board/netstar/eeprom.c new file mode 100644 index 0000000..aa375a4 --- /dev/null +++ b/u-boot/board/netstar/eeprom.c @@ -0,0 +1,218 @@ +/* + * (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. + */ + +#include <common.h> +#include <exports.h> +#include <timestamp.h> +#include <net.h> +#include "../drivers/net/smc91111.h" + +static struct eth_device dev = { + .iobase = CONFIG_SMC91111_BASE +}; + +static u16 read_eeprom_reg(u16 reg) +{ + int timeout; + + SMC_SELECT_BANK(&dev, 2); + SMC_outw(&dev, reg, PTR_REG); + + SMC_SELECT_BANK(&dev, 1); + SMC_outw(&dev, SMC_inw(&dev, CTL_REG) | CTL_EEPROM_SELECT | + CTL_RELOAD, CTL_REG); + + timeout = 100; + + while ((SMC_inw(&dev, CTL_REG) & CTL_RELOAD) && --timeout) + udelay(100); + if (timeout == 0) { + printf("Timeout reading register %02x\n", reg); + return 0; + } + + return SMC_inw(&dev, GP_REG); +} + +static int write_eeprom_reg(u16 value, u16 reg) +{ + int timeout; + + SMC_SELECT_BANK(&dev, 2); + SMC_outw(&dev, reg, PTR_REG); + + SMC_SELECT_BANK(&dev, 1); + + SMC_outw(&dev, value, GP_REG); + SMC_outw(&dev, SMC_inw(&dev, CTL_REG) | CTL_EEPROM_SELECT | + CTL_STORE, CTL_REG); + + timeout = 100; + + while ((SMC_inw(&dev, CTL_REG) & CTL_STORE) && --timeout) + udelay(100); + if (timeout == 0) { + printf("Timeout writing 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; + + puts("HWaddr: "); + 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; +} + +int eeprom(int argc, char * const argv[]) +{ + int i, len, ret; + unsigned char buf[58], *p; + + app_startup(argv); + i = get_version(); + if (i != XF_VERSION) { + printf("Using ABI version %d, but U-Boot provides %d\n", + XF_VERSION, i); + return 1; + } + + if ((SMC_inw(&dev, BANK_SELECT) & 0xFF00) != 0x3300) { + puts("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') { + puts("NetStar EEPROM writer\n" + "Built: " U_BOOT_DATE " at " U_BOOT_TIME "\n" + "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: + puts("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])) { + puts("*** HWaddr does not match! ***\n"); + return 4; + } + + while (len--) + *p++ = 0; + + write_data((u16 *)buf, sizeof(buf) >> 1); + + return 0; +} |