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author | Wolfgang Denk <wd@denx.de> | 2011-11-08 00:38:52 +0100 |
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committer | Wolfgang Denk <wd@denx.de> | 2011-11-08 00:38:52 +0100 |
commit | 688d8f33f27ea596efb6632388ee60360996eed0 (patch) | |
tree | 961e812048557d4ac7062e6a7387f543e7d634af /board/matrix_vision/mvblx/sys_eeprom.c | |
parent | 7ba6d591b5a6ec4ed502de7d94ff726bce13fe61 (diff) | |
parent | 2026a119512a9cced2957221e83fef92b8211d26 (diff) | |
download | u-boot-688d8f33f27ea596efb6632388ee60360996eed0.tar.gz |
Merge branch 'master' of git://git.denx.de/u-boot-arm
* 'master' of git://git.denx.de/u-boot-arm:
Arm: re-introduce the MACH_TYPE_XXXXXX for EB_CPUX9K2 board
arm: jadecpu: Readd MACH_TYPE_JADECPU
at91: defined mach-types for otc570 board in board config file
at91: defined mach-types for meesc board in board config file
mx31pdk: Enable D and I caches
ehci-mxc: remove incorrect comment
README: Fix supported i.MX SoC list for CONFIG_MXC_SPI
mx53: Turn off child clocks before reconfigure perclk_root
qong: enable support for compressed images
imx: imx31_phycore.h: fix checkpatch warnings
vision2: Remove unused get_board_rev function
mx53smd: Remove unused get_board_rev function
mx53ard: Remove unused get_board_rev function
mx53evk: Remove unused get_board_rev function
mx53evk: Add RTC support
mx53loco: Remove unused get_board_rev function
mx53evk: Remove unneeded '1' from mx53evk.h
OMAP3: mvblx: Initial support for mvBlueLYNX-X
ARM: dig297: Define MACH_TYPE_OMAP3_CPS and CONFIG_MACH_TYPE
omap3: mem: Move comments next to definitions
omap3: mem: Clean-up whitespaces
omap3: mem: Define and use common macros
Davinci: ea20: added PREBOOT to configuration
Davinci: ea20: added I2C support
Davinci: ea20: added video support
VIDEO: davinci: add framebuffer to da8xx
ARM: Davinci: added missing registers to hardware.h
Davinci: ea20: add gpios for LCD backlight control
Davinci: ea20: add gpio for keeping power on in board_late_init
Davinci: ea20: Add default U-Boot environment
Davinci: ea20: Add early init to get early output from console
Davinci: ea20: Add NAND support
Davinci: ea20: set GPIOs to hold MII-Phy in reset and set UART0-Switch for console
Davinci: ea20: set console on UART0
arm, davinci: add cam_enc_4xx support
arm926ejs, davinci: add missing spi defines for dm365
arm926ejs, davinci: add cpuinfo for dm365
arm, davinci: add lowlevel function for dm365 soc
arm, davinci: add header files for dm365
spl, nand: add 4bit HW ecc oob first nand_read_page function
arm, davinci: add support for new spl framework
spl: add option for adding post memory test to the SPL framework
net, davinci_emac: make clock divider in MDIO control register configurable
arm, usb, davinci: make USBPHY_CTL register configurable
usb, davinci: add enable_vbus() weak function
omap3evm: fix errors caused by multiple definitions
omap3evm: Add (quick) configuration for NAND only
omap3evm: Add (quick) configuration for MMC/SD only
omap3evm: move common config options to new file
omap3evm: Prepare to split configuration
omap3evm: Reorder related config options
omap/spl: actually enable the console
davinci_emac: compilation fix, phy is array now
omap3evm: Set environment variable 'ethaddr'
arm, arm926: fix missing symbols in NAND_SPL mode
arm, davinci: Add function lpsc_syncreset()
arm, davinci: replace CONFIG_PRELOADER with CONFIG_SPL_BUILD
arm/km: portl2 environment address update to P1B
arm/km: adapt bootcounter evaluation
arm/km: enable jffs2 cmds
arm/km: trigger reconfiguration for the Xilinx FPGA
arm/km: add boardid and hwkey to kernel command line
ARM: Reintroduce MACH_TYPE_KM_KIRKWOOD for keymile ARM boards
netspace_v2: enable I2C EEPROM support
netspace_v2: fix SDRAM configuration
armada100: define CONFIG_SYS_CACHELINE_SIZE
pantheon: define CONFIG_SYS_CACHELINE_SIZE
kirkwood: define CONFIG_SYS_CACHELINE_SIZE
kirkwood: drop empty asm-offsets.s file
arm/km/mgcoge3un: enhance "waitforne" feature
arm/km: add variable waitforne to mgcoge3un
gplugD: Fix for error:MACH_TYPE_SHEEVAD undeclared
ARM: dreamplug: fix compilation
ARM: DockStar: fix compilation
ARM: netspace_v2: fix warnings
am335x: Drop board_sysinfo struct
am335x: Temporarily add MACH_TYPE define
misc:pmic:samsung Enable PMIC driver at C210 Universal target
dcache:s5p CONFIG_SYS_CACHELINE_SIZE added for s5p UNIVERSAL C210 target
dcache:s5p CONFIG_SYS_CACHELINE_SIZE added for s5p GONI target
smdkv310: use macro for mmc data read function address
smdkv310: use spl framework for mmc spl
SMDKV310: use get_ram_size() to validate dram size
SMDKV310: Initialize board id using CONFIG_MACH_TYPE
ORIGEN : use absolute paths and fix tool naming
ORIGEN : enable device tree support
MX25: tx25: Fix building due to missing MACH_TYPE
mx31: Add board support for HALE TT-01
mx31: add ESD control registers
mx31: define pins and init for UART2 and CSPI3
MX35: add support for flea3 board
MX51: vision2: add MACH_TYPE in config file
vision2: Remove unused header file
mx51evk: Remove unused get_board_rev function
mx51evk: Remove unneeded '1' from mx51evk.h
I2C: Fix mxc_i2c.c problem on imx31_phycore
mx35pdk: Add RTC support
mx51evk: Use GPIO API for configuring the IOMUX
mx51evk: Add RTC support
rtc: Make mc13783-rtc driver generic
qong: remove unneeded IOMUX settings
qong: Use mx31_set_gpr to setup USBH2 pins
mx31: Introduce mx31_set_gpr function
mx31pdk: Add MC13783 PMIC support
qong: remove unneeded "1" from qong.h
misc: pmic: fix regression in pmic_fsl.c (SPI)
mx5 configs: CONFIG_PRIME should really be CONFIG_ETHPRIME
MX35: Drop unnecessary prototypes from imx-regs.h
I2C: added I2C-2 and I2C-3 to MX35
MX35: factorize common assembly code
MX35: add reset cause as provided by other i.MX
MX35: add pins definition for UART3
MX35: added ESDC structure to imx-regs
Diffstat (limited to 'board/matrix_vision/mvblx/sys_eeprom.c')
-rw-r--r-- | board/matrix_vision/mvblx/sys_eeprom.c | 395 |
1 files changed, 395 insertions, 0 deletions
diff --git a/board/matrix_vision/mvblx/sys_eeprom.c b/board/matrix_vision/mvblx/sys_eeprom.c new file mode 100644 index 0000000000..945a36dfe6 --- /dev/null +++ b/board/matrix_vision/mvblx/sys_eeprom.c @@ -0,0 +1,395 @@ +/* + * Copyright 2006, 2008-2009, 2011 Freescale Semiconductor + * York Sun (yorksun@freescale.com) + * Haiying Wang (haiying.wang@freescale.com) + * Timur Tabi (timur@freescale.com) + * + * 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 as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * 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 + */ + +#include <common.h> +#include <command.h> +#include <i2c.h> + +/* #define DEBUG */ + +/* + * static eeprom: EEPROM layout + */ +static struct __attribute__ ((__packed__)) eeprom { + u8 id[16]; /* 0x01 - 0x0F Type e.g. 100wG-5111 */ + u8 sn[10]; /* 0x10 - 0x19 Serial Number */ + u8 date[6]; /* 0x1A - 0x1F Build Date */ + u8 mac[6]; /* 0x20 - 0x25 MAC address */ + u8 reserved[10];/* 0x26 - 0x2f reserved */ + u32 crc; /* x+1 CRC32 checksum */ +} e; + +/* Set to 1 if we've read EEPROM into memory */ +static int has_been_read; + +/** + * show_eeprom - display the contents of the EEPROM + */ +static void show_eeprom(void) +{ + unsigned int crc; + char safe_string[16]; + +#ifdef DEBUG + int i; +#endif + u8 *p; + + /* ID */ + strncpy(safe_string, (char *)e.id, sizeof(e.id)); + safe_string[sizeof(e.id)-1] = 0; + printf("ID: mvBlueLYNX-X%s\n", safe_string); + + /* Serial number */ + strncpy(safe_string, (char *)e.sn, sizeof(e.sn)); + safe_string[sizeof(e.sn)-1] = 0; + printf("SN: %s\n", safe_string); + + /* Build date, BCD date values, as YYMMDDhhmmss */ + printf("Build date: 20%02x/%02x/%02x %02x:%02x:%02x %s\n", + e.date[0], e.date[1], e.date[2], + e.date[3] & 0x7F, e.date[4], e.date[5], + e.date[3] & 0x80 ? "PM" : ""); + + /* Show MAC address */ + p = e.mac; + printf("Eth: %02x:%02x:%02x:%02x:%02x:%02x\n", + p[0], p[1], p[2], p[3], p[4], p[5]); + + crc = crc32(0, (void *)&e, sizeof(e) - 4); + + if (crc == be32_to_cpu(e.crc)) + printf("CRC: %08x\n", be32_to_cpu(e.crc)); + else + printf("CRC: %08x (should be %08x)\n", be32_to_cpu(e.crc), crc); + +#ifdef DEBUG + printf("EEPROM dump: (0x%x bytes)\n", sizeof(e)); + for (i = 0; i < sizeof(e); i++) { + if ((i % 16) == 0) + printf("%02X: ", i); + printf("%02X ", ((u8 *)&e)[i]); + if (((i % 16) == 15) || (i == sizeof(e) - 1)) + printf("\n"); + } +#endif +} + +/** + * read_eeprom - read the EEPROM into memory + */ +static int read_eeprom(void) +{ + int ret; +#ifdef CONFIG_SYS_EEPROM_BUS_NUM + unsigned int bus; +#endif + + if (has_been_read) + return 0; + +#ifdef CONFIG_SYS_EEPROM_BUS_NUM + bus = i2c_get_bus_num(); + i2c_set_bus_num(CONFIG_SYS_EEPROM_BUS_NUM); +#endif + + ret = eeprom_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, + (uchar *)&e, sizeof(e)); + +#ifdef CONFIG_SYS_EEPROM_BUS_NUM + i2c_set_bus_num(bus); +#endif + +#ifdef DEBUG + show_eeprom(); +#endif + + has_been_read = (ret == 0) ? 1 : 0; + + return ret; +} + +/** + * update_crc - update the CRC + * + * This function should be called after each update to the EEPROM structure, + * to make sure the CRC is always correct. + */ +static void update_crc(void) +{ + u32 crc; + + crc = crc32(0, (void *)&e, sizeof(e) - 4); + e.crc = cpu_to_be32(crc); +} + +/** + * prog_eeprom - write the EEPROM from memory + */ +static int prog_eeprom(void) +{ + int ret = 0; +#ifdef CONFIG_SYS_EEPROM_BUS_NUM + unsigned int bus; +#endif + + update_crc(); + +#ifdef CONFIG_SYS_EEPROM_BUS_NUM + bus = i2c_get_bus_num(); + i2c_set_bus_num(CONFIG_SYS_EEPROM_BUS_NUM); +#endif + + ret = eeprom_write(CONFIG_SYS_I2C_EEPROM_ADDR, 0, + (uchar *)&e, sizeof(e)); + + if (!ret) { + /* Verify the write by reading back the EEPROM and comparing */ + struct eeprom e2; +#ifdef DEBUG + printf("%s verifying...\n", __func__); +#endif + ret = eeprom_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, + (uchar *)&e2, sizeof(e2)); + + if (!ret && memcmp(&e, &e2, sizeof(e))) + ret = -1; + } + +#ifdef CONFIG_SYS_EEPROM_BUS_NUM + i2c_set_bus_num(bus); +#endif + + if (ret) { + printf("Programming failed.\n"); + has_been_read = 0; + return -1; + } + + printf("Programming passed.\n"); + return 0; +} + +/** + * h2i - converts hex character into a number + * + * This function takes a hexadecimal character (e.g. '7' or 'C') and returns + * the integer equivalent. + */ +static inline u8 h2i(char p) +{ + if ((p >= '0') && (p <= '9')) + return p - '0'; + + if ((p >= 'A') && (p <= 'F')) + return (p - 'A') + 10; + + if ((p >= 'a') && (p <= 'f')) + return (p - 'a') + 10; + + return 0; +} + +/** + * set_date - stores the build date into the EEPROM + * + * This function takes a pointer to a string in the format "YYMMDDhhmmss" + * (2-digit year, 2-digit month, etc), converts it to a 6-byte BCD string, + * and stores it in the build date field of the EEPROM local copy. + */ +static void set_date(const char *string) +{ + unsigned int i; + + if (strlen(string) != 12) { + printf("Usage: mac date YYMMDDhhmmss\n"); + return; + } + + for (i = 0; i < 6; i++) + e.date[i] = h2i(string[2 * i]) << 4 | h2i(string[2 * i + 1]); + + update_crc(); +} + +/** + * set_mac_address - stores a MAC address into the EEPROM + * + * This function takes a pointer to MAC address string + * (i.e."XX:XX:XX:XX:XX:XX", where "XX" is a two-digit hex number) and + * stores it in the MAC address field in the EEPROM local copy. + */ +static void set_mac_address(const char *string) +{ + char *p = (char *) string; + unsigned int i; + + for (i = 0; *p && (i < 6); i++) { + e.mac[i] = simple_strtoul(p, &p, 16); + if (*p == ':') + p++; + } + + update_crc(); +} + +int do_mac(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + char cmd; + + if (argc == 1) { + show_eeprom(); + return 0; + } + + cmd = argv[1][0]; + + if (cmd == 'r') { +#ifdef DEBUG + printf("%s read\n", __func__); +#endif + read_eeprom(); + return 0; + } + + if (argc == 2) { + switch (cmd) { + case 's': /* save */ +#ifdef DEBUG + printf("%s save\n", __func__); +#endif + prog_eeprom(); + break; + default: + return cmd_usage(cmdtp); + } + + return 0; + } + + /* We know we have at least one parameter */ + + switch (cmd) { + case 'n': /* serial number */ +#ifdef DEBUG + printf("%s serial number\n", __func__); +#endif + memset(e.sn, 0, sizeof(e.sn)); + strncpy((char *)e.sn, argv[2], sizeof(e.sn) - 1); + update_crc(); + break; + case 'd': /* date BCD format YYMMDDhhmmss */ + set_date(argv[2]); + break; + case 'e': /* errata */ + printf("mac errata not implemented\n"); + break; + case 'i': /* id */ + memset(e.id, 0, sizeof(e.id)); + strncpy((char *)e.id, argv[2], sizeof(e.id) - 1); + update_crc(); + break; + case 'p': /* ports */ + printf("mac ports not implemented (always 1 port)\n"); + break; + case '0' ... '9': + /* we only have "mac 0" but any digit can be used here */ + set_mac_address(argv[2]); + break; + case 'h': /* help */ + default: + return cmd_usage(cmdtp); + } + + return 0; +} + +int mac_read_from_eeprom(void) +{ + u32 crc, crc_offset = offsetof(struct eeprom, crc); + u32 *crcp; /* Pointer to the CRC in the data read from the EEPROM */ + + if (read_eeprom()) { + printf("EEPROM Read failed.\n"); + return -1; + } + + crc = crc32(0, (void *)&e, crc_offset); + crcp = (void *)&e + crc_offset; + if (crc != be32_to_cpu(*crcp)) { + printf("EEPROM CRC mismatch (%08x != %08x)\n", crc, + be32_to_cpu(e.crc)); + return -1; + } + + if (memcmp(&e.mac, "\0\0\0\0\0\0", 6) && + memcmp(&e.mac, "\xFF\xFF\xFF\xFF\xFF\xFF", 6)) { + char ethaddr[9]; + + sprintf(ethaddr, "%02X:%02X:%02X:%02X:%02X:%02X", + e.mac[0], + e.mac[1], + e.mac[2], + e.mac[3], + e.mac[4], + e.mac[5]); + /* Only initialize environment variables that are blank + * (i.e. have not yet been set) + */ + if (!getenv("ethaddr")) + setenv("ethaddr", ethaddr); + } + + if (memcmp(&e.sn, "\0\0\0\0\0\0\0\0\0\0", 10) && + memcmp(&e.sn, "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF", 10)) { + char serial_num[12]; + + strncpy(serial_num, (char *)e.sn, sizeof(e.sn) - 1); + /* Only initialize environment variables that are blank + * (i.e. have not yet been set) + */ + if (!getenv("serial#")) + setenv("serial#", serial_num); + } + + /* TODO should I calculate CRC here? */ + return 0; +} + +#ifdef CONFIG_SERIAL_TAG +void get_board_serial(struct tag_serialnr *serialnr) +{ + char *serial = getenv("serial#"); + + if (serial && (strlen(serial) > 3)) { + /* use the numerical part of the serial number LXnnnnnn */ + serialnr->high = 0; + serialnr->low = simple_strtoul(serial + 2, NULL, 10); + } else { + serialnr->high = 0; + serialnr->low = 0; + } +} +#endif |