Commit ad2d1639 authored by Mike Frysinger's avatar Mike Frysinger Committed by Ben Warren

smc911x_eeprom: new example app for managing newer SMC parts

A forward port of the last version to work with the newer smc911x driver.
I only have a board with a LAN9218 part on it, so that is the only one
I've tested.  But there isn't anything in this that would make it terribly
chip specific afaik.
Signed-off-by: default avatarMike Frysinger <vapier@gentoo.org>
CC: Sascha Hauer <s.hauer@pengutronix.de>
CC: Guennadi Liakhovetski <lg@denx.de>
CC: Magnus Lilja <lilja.magnus@gmail.com>
Signed-off-by: default avatarBen Warren <biggerbadderben@gmail.com>
parent 736323a4
......@@ -6,5 +6,6 @@
/timer
/sched
/smc91111_eeprom
/smc911x_eeprom
*.bin
*.srec
......@@ -105,9 +105,10 @@ BIN += sched.bin
endif
ifeq ($(ARCH),blackfin)
ELF += smc91111_eeprom
SREC += smc91111_eeprom.srec
BIN += smc91111_eeprom.bin
BFIN_BIN = smc91111_eeprom smc911x_eeprom
ELF += $(BFIN_BIN)
SREC += $(addsuffix .srec,$(BFIN_BIN))
BIN += $(addsuffix .bin,$(BFIN_BIN))
endif
# The following example is pretty 8xx specific...
......
/*
* smc911x_eeprom.c - EEPROM interface to SMC911x parts.
* Only tested on SMSC9118 though ...
*
* Copyright 2004-2008 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*
* Based on smc91111_eeprom.c which:
* Heavily borrowed from the following peoples GPL'ed software:
* - Wolfgang Denk, DENX Software Engineering, wd@denx.de
* Das U-boot
* - Ladislav Michl ladis@linux-mips.org
* A rejected patch on the U-Boot mailing list
*/
#include <common.h>
#include <exports.h>
#ifdef CONFIG_DRIVER_SMC911X
#include "../drivers/net/smc911x.h"
/**
* smsc_ctrlc - detect press of CTRL+C (common ctrlc() isnt exported!?)
*/
static int smsc_ctrlc(void)
{
return (tstc() && getc() == 0x03);
}
/**
* usage - dump usage information
*/
static void usage(void)
{
puts(
"MAC/EEPROM Commands:\n"
" P : Print the MAC addresses\n"
" D : Dump the EEPROM contents\n"
" M : Dump the MAC contents\n"
" C : Copy the MAC address from the EEPROM to the MAC\n"
" W : Write a register in the EEPROM or in the MAC\n"
" Q : Quit\n"
"\n"
"Some commands take arguments:\n"
" W <E|M> <register> <value>\n"
" E: EEPROM M: MAC\n"
);
}
/**
* dump_regs - dump the MAC registers
*
* Registers 0x00 - 0x50 are FIFOs. The 0x50+ are the control registers
* and they're all 32bits long. 0xB8+ are reserved, so don't bother.
*/
static void dump_regs(void)
{
u8 i, j = 0;
for (i = 0x50; i < 0xB8; i += sizeof(u32))
printf("%02x: 0x%08x %c", i, reg_read(CONFIG_DRIVER_SMC911X_BASE + i),
(j++ % 2 ? '\n' : ' '));
}
/**
* do_eeprom_cmd - handle eeprom communication
*/
static int do_eeprom_cmd(int cmd, u8 reg)
{
if (reg_read(E2P_CMD) & E2P_CMD_EPC_BUSY) {
printf("eeprom_cmd: busy at start (E2P_CMD = 0x%08x)\n",
reg_read(E2P_CMD));
return -1;
}
reg_write(E2P_CMD, E2P_CMD_EPC_BUSY | cmd | reg);
while (reg_read(E2P_CMD) & E2P_CMD_EPC_BUSY)
if (smsc_ctrlc()) {
printf("eeprom_cmd: timeout (E2P_CMD = 0x%08x)\n",
reg_read(E2P_CMD));
return -1;
}
return 0;
}
/**
* read_eeprom_reg - read specified register in EEPROM
*/
static u8 read_eeprom_reg(u8 reg)
{
int ret = do_eeprom_cmd(E2P_CMD_EPC_CMD_READ, reg);
return (ret ? : reg_read(E2P_DATA));
}
/**
* write_eeprom_reg - write specified value into specified register in EEPROM
*/
static int write_eeprom_reg(u8 value, u8 reg)
{
int ret;
/* enable erasing/writing */
ret = do_eeprom_cmd(E2P_CMD_EPC_CMD_EWEN, reg);
if (ret)
goto done;
/* erase the eeprom reg */
ret = do_eeprom_cmd(E2P_CMD_EPC_CMD_ERASE, reg);
if (ret)
goto done;
/* write the eeprom reg */
reg_write(E2P_DATA, value);
ret = do_eeprom_cmd(E2P_CMD_EPC_CMD_WRITE, reg);
if (ret)
goto done;
/* disable erasing/writing */
ret = do_eeprom_cmd(E2P_CMD_EPC_CMD_EWDS, reg);
done:
return ret;
}
/**
* skip_space - find first non-whitespace in given pointer
*/
static char *skip_space(char *buf)
{
while (buf[0] == ' ' || buf[0] == '\t')
++buf;
return buf;
}
/**
* write_stuff - handle writing of MAC registers / eeprom
*/
static void write_stuff(char *line)
{
char dest;
char *endp;
u8 reg;
u32 value;
/* Skip over the "W " part of the command */
line = skip_space(line + 1);
/* Figure out destination */
switch (line[0]) {
case 'E':
case 'M':
dest = line[0];
break;
default:
invalid_usage:
printf("ERROR: Invalid write usage\n");
usage();
return;
}
/* Get the register to write */
line = skip_space(line + 1);
reg = simple_strtoul(line, &endp, 16);
if (line == endp)
goto invalid_usage;
/* Get the value to write */
line = skip_space(endp);
value = simple_strtoul(line, &endp, 16);
if (line == endp)
goto invalid_usage;
/* Check for trailing cruft */
line = skip_space(endp);
if (line[0])
goto invalid_usage;
/* Finally, execute the command */
if (dest == 'E') {
printf("Writing EEPROM register %02x with %02x\n", reg, value);
write_eeprom_reg(value, reg);
} else {
printf("Writing MAC register %02x with %08x\n", reg, value);
reg_write(CONFIG_DRIVER_SMC911X_BASE + reg, value);
}
}
/**
* copy_from_eeprom - copy MAC address in eeprom to address registers
*/
static void copy_from_eeprom(void)
{
ulong addrl =
read_eeprom_reg(0x01) |
read_eeprom_reg(0x02) << 8 |
read_eeprom_reg(0x03) << 16 |
read_eeprom_reg(0x04) << 24;
ulong addrh =
read_eeprom_reg(0x05) |
read_eeprom_reg(0x06) << 8;
smc911x_set_mac_csr(ADDRL, addrl);
smc911x_set_mac_csr(ADDRH, addrh);
puts("EEPROM contents copied to MAC\n");
}
/**
* print_macaddr - print MAC address registers and MAC address in eeprom
*/
static void print_macaddr(void)
{
puts("Current MAC Address in MAC: ");
ulong addrl = smc911x_get_mac_csr(ADDRL);
ulong addrh = smc911x_get_mac_csr(ADDRH);
printf("%02x:%02x:%02x:%02x:%02x:%02x\n",
(u8)(addrl), (u8)(addrl >> 8), (u8)(addrl >> 16),
(u8)(addrl >> 24), (u8)(addrh), (u8)(addrh >> 8));
puts("Current MAC Address in EEPROM: ");
int i;
for (i = 1; i < 6; ++i)
printf("%02x:", read_eeprom_reg(i));
printf("%02x\n", read_eeprom_reg(i));
}
/**
* dump_eeprom - dump the whole content of the EEPROM
*/
static void dump_eeprom(void)
{
int i;
puts("EEPROM:\n");
for (i = 0; i < 7; ++i)
printf("%02x: 0x%02x\n", i, read_eeprom_reg(i));
}
/**
* smc911x_init - get the MAC/EEPROM up and ready for use
*/
static int smc911x_init(void)
{
/* See if there is anything there */
if (!smc911x_detect_chip())
return 1;
smc911x_reset();
/* Make sure we set EEDIO/EECLK to the EEPROM */
if (reg_read(GPIO_CFG) & GPIO_CFG_EEPR_EN) {
while (reg_read(E2P_CMD) & E2P_CMD_EPC_BUSY)
if (smsc_ctrlc()) {
printf("init: timeout (E2P_CMD = 0x%08x)\n", reg_read(E2P_CMD));
return 1;
}
reg_write(GPIO_CFG, reg_read(GPIO_CFG) & ~GPIO_CFG_EEPR_EN);
}
return 0;
}
/**
* getline - consume a line of input and handle some escape sequences
*/
static char *getline(void)
{
static char buffer[100];
char c;
size_t i;
i = 0;
while (1) {
buffer[i] = '\0';
while (!tstc())
continue;
c = getc();
/* Convert to uppercase */
if (c >= 'a' && c <= 'z')
c -= ('a' - 'A');
switch (c) {
case '\r': /* Enter/Return key */
case '\n':
puts("\n");
return buffer;
case 0x03: /* ^C - break */
return NULL;
case 0x5F:
case 0x08: /* ^H - backspace */
case 0x7F: /* DEL - backspace */
if (i) {
puts("\b \b");
i--;
}
break;
default:
/* Ignore control characters */
if (c < 0x20)
break;
/* Queue up all other characters */
buffer[i++] = c;
printf("%c", c);
break;
}
}
}
/**
* smc911x_eeprom - our application's main() function
*/
int smc911x_eeprom(int argc, char *argv[])
{
/* Print the ABI version */
app_startup(argv);
if (XF_VERSION != get_version()) {
printf("Expects ABI version %d\n", XF_VERSION);
printf("Actual U-Boot ABI version %lu\n", get_version());
printf("Can't run\n\n");
return 1;
}
/* Initialize the MAC/EEPROM somewhat */
puts("\n");
if (smc911x_init())
return 1;
/* Dump helpful usage information */
puts("\n");
usage();
puts("\n");
while (1) {
char *line;
/* Send the prompt and wait for a line */
puts("eeprom> ");
line = getline();
/* Got a ctrl+c */
if (!line)
return 0;
/* Eat leading space */
line = skip_space(line);
/* Empty line, try again */
if (!line[0])
continue;
/* Only accept 1 letter commands */
if (line[0] && line[1] && line[1] != ' ' && line[1] != '\t')
goto unknown_cmd;
/* Now parse the command */
switch (line[0]) {
case 'W': write_stuff(line); break;
case 'D': dump_eeprom(); break;
case 'M': dump_regs(); break;
case 'C': copy_from_eeprom(); break;
case 'P': print_macaddr(); break;
unknown_cmd:
default: puts("ERROR: Unknown command!\n\n");
case '?':
case 'H': usage(); break;
case 'Q': return 0;
}
}
}
#else
int smc911x_eeprom(int argc, char *argv[])
{
puts("Not supported for this board\n");
return 1;
}
#endif
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