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author | Peter Tyser <ptyser@xes-inc.com> | 2009-07-10 11:03:19 -0500 |
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committer | Wolfgang Denk <wd@denx.de> | 2009-07-21 00:13:21 +0200 |
commit | 1bc1538613d66cef3cbce680fc8d7c3561a0fbd0 (patch) | |
tree | f832202519d4077e8ca735948198691f054fe968 /examples/smc911x_eeprom.c | |
parent | b220c64d86f7c705a183302c3b50076d7e5d876c (diff) | |
download | u-boot-imx-1bc1538613d66cef3cbce680fc8d7c3561a0fbd0.zip u-boot-imx-1bc1538613d66cef3cbce680fc8d7c3561a0fbd0.tar.gz u-boot-imx-1bc1538613d66cef3cbce680fc8d7c3561a0fbd0.tar.bz2 |
Move examples/ to examples/standalone
The current files in examples are all standalone application examples,
so put them in their own subdirectory for organizational purposes
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Diffstat (limited to 'examples/smc911x_eeprom.c')
-rw-r--r-- | examples/smc911x_eeprom.c | 383 |
1 files changed, 0 insertions, 383 deletions
diff --git a/examples/smc911x_eeprom.c b/examples/smc911x_eeprom.c deleted file mode 100644 index bf22f0a..0000000 --- a/examples/smc911x_eeprom.c +++ /dev/null @@ -1,383 +0,0 @@ -/* - * 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, - smc911x_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 (smc911x_reg_read(E2P_CMD) & E2P_CMD_EPC_BUSY) { - printf("eeprom_cmd: busy at start (E2P_CMD = 0x%08x)\n", - smc911x_reg_read(E2P_CMD)); - return -1; - } - - smc911x_reg_write(E2P_CMD, E2P_CMD_EPC_BUSY | cmd | reg); - - while (smc911x_reg_read(E2P_CMD) & E2P_CMD_EPC_BUSY) - if (smsc_ctrlc()) { - printf("eeprom_cmd: timeout (E2P_CMD = 0x%08x)\n", - smc911x_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 ? : smc911x_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 */ - smc911x_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); - smc911x_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 (smc911x_reg_read(GPIO_CFG) & GPIO_CFG_EEPR_EN) { - while (smc911x_reg_read(E2P_CMD) & E2P_CMD_EPC_BUSY) - if (smsc_ctrlc()) { - printf("init: timeout (E2P_CMD = 0x%08x)\n", - smc911x_reg_read(E2P_CMD)); - return 1; - } - smc911x_reg_write(GPIO_CFG, smc911x_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 |