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author | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2013-11-09 12:51:47 +0100 |
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committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2013-11-09 22:59:47 +0100 |
commit | 85b8c5c4bf80025de4632ae6c9a8a606e51508a4 (patch) | |
tree | 7a89b428296ab5baca8f07c4019e3485e452cf42 /board/corscience/tricorder/tricorder-eeprom.c | |
parent | 15c5cdf5aa6b292145e5e3e220ec1f42b11eff6f (diff) | |
parent | 3285d4ca197928a048d3dda86751b5d26e6e0e86 (diff) | |
download | u-boot-imx-85b8c5c4bf80025de4632ae6c9a8a606e51508a4.zip u-boot-imx-85b8c5c4bf80025de4632ae6c9a8a606e51508a4.tar.gz u-boot-imx-85b8c5c4bf80025de4632ae6c9a8a606e51508a4.tar.bz2 |
Merge branch 'iu-boot/master' into 'u-boot-arm/master'
Conflicts:
arch/arm/cpu/arm926ejs/mxs/Makefile
board/compulab/cm_t35/Makefile
board/corscience/tricorder/Makefile
board/ppcag/bg0900/Makefile
drivers/bootcount/Makefile
include/configs/omap4_common.h
include/configs/pdnb3.h
Makefile conflicts are due to additions/removals of
object files on the ARM branch vs KBuild introduction
on the main branch. Resolution consists in adjusting
the list of object files in the main branch version.
This also applies to two files which are not listed
as conflicting but had to be modified:
board/compulab/common/Makefile
board/udoo/Makefile
include/configs/omap4_common.h conflicts are due to
the OMAP4 conversion to ti_armv7_common.h on the ARM
side, and CONFIG_SYS_HZ removal on the main side.
Resolution is to convert as this icludes removal of
CONFIG_SYS_HZ.
include/configs/pdnb3.h is due to a removal on ARM side.
Trivial resolution is to remove the file.
Note: 'git show' will also list two files just because
they are new:
include/configs/am335x_igep0033.h
include/configs/omap3_igep00x0.h
Diffstat (limited to 'board/corscience/tricorder/tricorder-eeprom.c')
-rw-r--r-- | board/corscience/tricorder/tricorder-eeprom.c | 251 |
1 files changed, 251 insertions, 0 deletions
diff --git a/board/corscience/tricorder/tricorder-eeprom.c b/board/corscience/tricorder/tricorder-eeprom.c new file mode 100644 index 0000000..1c74a0f --- /dev/null +++ b/board/corscience/tricorder/tricorder-eeprom.c @@ -0,0 +1,251 @@ +/* + * (C) Copyright 2013 + * Corscience GmbH & Co. KG, <www.corscience.de> + * Andreas Bießmann <andreas.biessmann@corscience.de> + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#include <common.h> +#include <i2c.h> + +#include "tricorder-eeprom.h" + +static inline void warn_wrong_value(const char *msg, unsigned int a, + unsigned int b) +{ + printf("Expected EEPROM %s %08x, got %08x\n", msg, a, b); +} + +static int handle_eeprom_v0(struct tricorder_eeprom *eeprom) +{ + struct tricorder_eeprom_v0 { + uint32_t magic; + uint16_t length; + uint16_t version; + char board_name[TRICORDER_BOARD_NAME_LENGTH]; + char board_version[TRICORDER_BOARD_VERSION_LENGTH]; + char board_serial[TRICORDER_BOARD_SERIAL_LENGTH]; + uint32_t crc32; + } __packed eepromv0; + uint32_t crc; + + printf("Old EEPROM (v0), consider rewrite!\n"); + + if (be16_to_cpu(eeprom->length) != sizeof(eepromv0)) { + warn_wrong_value("length", sizeof(eepromv0), + be16_to_cpu(eeprom->length)); + return 1; + } + + memcpy(&eepromv0, eeprom, sizeof(eepromv0)); + + crc = crc32(0L, (unsigned char *)&eepromv0, + sizeof(eepromv0) - sizeof(eepromv0.crc32)); + if (be32_to_cpu(eepromv0.crc32) != crc) { + warn_wrong_value("CRC", be32_to_cpu(eepromv0.crc32), + crc); + return 1; + } + + /* Ok the content is correct, do the conversion */ + memset(eeprom->interface_version, 0x0, + TRICORDER_INTERFACE_VERSION_LENGTH); + crc = crc32(0L, (unsigned char *)eeprom, TRICORDER_EEPROM_CRC_SIZE); + eeprom->crc32 = cpu_to_be32(crc); + + return 0; +} + +static int handle_eeprom_v1(struct tricorder_eeprom *eeprom) +{ + uint32_t crc; + + if (be16_to_cpu(eeprom->length) != TRICORDER_EEPROM_SIZE) { + warn_wrong_value("length", TRICORDER_EEPROM_SIZE, + be16_to_cpu(eeprom->length)); + return 1; + } + + crc = crc32(0L, (unsigned char *)eeprom, TRICORDER_EEPROM_CRC_SIZE); + if (be32_to_cpu(eeprom->crc32) != crc) { + warn_wrong_value("CRC", be32_to_cpu(eeprom->crc32), crc); + return 1; + } + + return 0; +} + +int tricorder_get_eeprom(int addr, struct tricorder_eeprom *eeprom) +{ +#ifdef CONFIG_SYS_EEPROM_BUS_NUM + unsigned int bus = i2c_get_bus_num(); + i2c_set_bus_num(CONFIG_SYS_EEPROM_BUS_NUM); +#endif + + memset(eeprom, 0, TRICORDER_EEPROM_SIZE); + + i2c_read(addr, 0, 2, (unsigned char *)eeprom, TRICORDER_EEPROM_SIZE); +#ifdef CONFIG_SYS_EEPROM_BUS_NUM + i2c_set_bus_num(bus); +#endif + + if (be32_to_cpu(eeprom->magic) != TRICORDER_EEPROM_MAGIC) { + warn_wrong_value("magic", TRICORDER_EEPROM_MAGIC, + be32_to_cpu(eeprom->magic)); + return 1; + } + + switch (be16_to_cpu(eeprom->version)) { + case 0: + return handle_eeprom_v0(eeprom); + case 1: + return handle_eeprom_v1(eeprom); + default: + warn_wrong_value("version", TRICORDER_EEPROM_VERSION, + be16_to_cpu(eeprom->version)); + return 1; + } +} + +#if !defined(CONFIG_SPL) +int tricorder_eeprom_read(unsigned devaddr) +{ + struct tricorder_eeprom eeprom; + int ret = tricorder_get_eeprom(devaddr, &eeprom); + + if (ret) + return ret; + + printf("Board type: %.*s\n", + sizeof(eeprom.board_name), eeprom.board_name); + printf("Board version: %.*s\n", + sizeof(eeprom.board_version), eeprom.board_version); + printf("Board serial: %.*s\n", + sizeof(eeprom.board_serial), eeprom.board_serial); + printf("Board interface version: %.*s\n", + sizeof(eeprom.interface_version), + eeprom.interface_version); + + return ret; +} + +int tricorder_eeprom_write(unsigned devaddr, const char *name, + const char *version, const char *serial, const char *interface) +{ + struct tricorder_eeprom eeprom, eeprom_verify; + size_t length; + uint32_t crc; + int ret; + unsigned char *p; + int i; +#ifdef CONFIG_SYS_EEPROM_BUS_NUM + unsigned int bus; +#endif + + memset(eeprom, 0, TRICORDER_EEPROM_SIZE); + memset(eeprom_verify, 0, TRICORDER_EEPROM_SIZE); + + eeprom.magic = cpu_to_be32(TRICORDER_EEPROM_MAGIC); + eeprom.length = cpu_to_be16(TRICORDER_EEPROM_SIZE); + eeprom.version = cpu_to_be16(TRICORDER_EEPROM_VERSION); + + length = min(sizeof(eeprom.board_name), strlen(name)); + strncpy(eeprom.board_name, name, length); + + length = min(sizeof(eeprom.board_version), strlen(version)); + strncpy(eeprom.board_version, version, length); + + length = min(sizeof(eeprom.board_serial), strlen(serial)); + strncpy(eeprom.board_serial, serial, length); + + if (interface) { + length = min(sizeof(eeprom.interface_version), + strlen(interface)); + strncpy(eeprom.interface_version, interface, length); + } + + crc = crc32(0L, (unsigned char *)&eeprom, TRICORDER_EEPROM_CRC_SIZE); + eeprom.crc32 = cpu_to_be32(crc); + +#if defined(DEBUG) + puts("Tricorder EEPROM content:\n"); + print_buffer(0, &eeprom, 1, sizeof(eeprom), 16); +#endif + +#ifdef CONFIG_SYS_EEPROM_BUS_NUM + bus = i2c_get_bus_num(); + i2c_set_bus_num(CONFIG_SYS_EEPROM_BUS_NUM); +#endif + + /* do page write to the eeprom */ + for (i = 0, p = (unsigned char *)&eeprom; + i < sizeof(eeprom); + i += 32, p += 32) { + ret = i2c_write(devaddr, i, CONFIG_SYS_I2C_EEPROM_ADDR_LEN, + p, min(sizeof(eeprom) - i, 32)); + if (ret) + break; + udelay(5000); /* 5ms write cycle timing */ + } + + ret = i2c_read(devaddr, 0, 2, (unsigned char *)&eeprom_verify, + TRICORDER_EEPROM_SIZE); + + if (memcmp(&eeprom, &eeprom_verify, sizeof(eeprom)) != 0) { + printf("Tricorder: Could not verify EEPROM content!\n"); + ret = 1; + } + +#ifdef CONFIG_SYS_EEPROM_BUS_NUM + i2c_set_bus_num(bus); +#endif + return ret; +} + +int do_tricorder_eeprom(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +{ + if (argc == 3) { + ulong dev_addr = simple_strtoul(argv[2], NULL, 16); + eeprom_init(); + if (strcmp(argv[1], "read") == 0) { + int rcode; + + rcode = tricorder_eeprom_read(dev_addr); + + return rcode; + } + } else if (argc == 6 || argc == 7) { + ulong dev_addr = simple_strtoul(argv[2], NULL, 16); + char *name = argv[3]; + char *version = argv[4]; + char *serial = argv[5]; + char *interface = NULL; + eeprom_init(); + + if (argc == 7) + interface = argv[6]; + + if (strcmp(argv[1], "write") == 0) { + int rcode; + + rcode = tricorder_eeprom_write(dev_addr, name, version, + serial, interface); + + return rcode; + } + } + + return CMD_RET_USAGE; +} + +U_BOOT_CMD( + tricordereeprom, 7, 1, do_tricorder_eeprom, + "Tricorder EEPROM", + "read devaddr\n" + " - read Tricorder EEPROM at devaddr and print content\n" + "tricordereeprom write devaddr name version serial [interface]\n" + " - write Tricorder EEPROM at devaddr with 'name', 'version'" + "and 'serial'\n" + " optional add an HW interface parameter" +); +#endif /* CONFIG_SPL */ |