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https://github.com/brain-hackers/u-boot-brain
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![Simon Glass](/assets/img/avatar_default.png)
We should not use typedefs in U-Boot. They cannot be used as forward declarations which means that header files must include the full header to access them. Drop the typedef and rename the struct to remove the _s suffix which is now not useful. This requires quite a few header-file additions. Signed-off-by: Simon Glass <sjg@chromium.org>
1108 lines
28 KiB
C
1108 lines
28 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* Copyright (C) 2013 Curt Brune <curt@cumulusnetworks.com>
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* Copyright (C) 2014 Srideep <srideep_devireddy@dell.com>
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* Copyright (C) 2013 Miles Tseng <miles_tseng@accton.com>
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* Copyright (C) 2014,2016 david_yang <david_yang@accton.com>
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*/
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#include <common.h>
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#include <command.h>
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#include <dm.h>
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#include <i2c.h>
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#include <i2c_eeprom.h>
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#include <env.h>
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#include <init.h>
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#include <net.h>
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#include <linux/ctype.h>
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#include <u-boot/crc.h>
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#include "tlv_eeprom.h"
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DECLARE_GLOBAL_DATA_PTR;
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#define MAX_TLV_DEVICES 2
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/* File scope function prototypes */
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static bool is_checksum_valid(u8 *eeprom);
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static int read_eeprom(u8 *eeprom);
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static void show_eeprom(u8 *eeprom);
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static void decode_tlv(struct tlvinfo_tlv *tlv);
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static void update_crc(u8 *eeprom);
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static int prog_eeprom(u8 *eeprom);
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static bool tlvinfo_find_tlv(u8 *eeprom, u8 tcode, int *eeprom_index);
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static bool tlvinfo_delete_tlv(u8 *eeprom, u8 code);
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static bool tlvinfo_add_tlv(u8 *eeprom, int tcode, char *strval);
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static int set_mac(char *buf, const char *string);
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static int set_date(char *buf, const char *string);
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static int set_bytes(char *buf, const char *string, int *converted_accum);
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static void show_tlv_devices(void);
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/* Set to 1 if we've read EEPROM into memory */
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static int has_been_read;
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/* The EERPOM contents after being read into memory */
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static u8 eeprom[TLV_INFO_MAX_LEN];
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static struct udevice *tlv_devices[MAX_TLV_DEVICES];
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static unsigned int current_dev;
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#define to_header(p) ((struct tlvinfo_header *)p)
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#define to_entry(p) ((struct tlvinfo_tlv *)p)
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#define HDR_SIZE sizeof(struct tlvinfo_header)
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#define ENT_SIZE sizeof(struct tlvinfo_tlv)
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static inline bool is_digit(char c)
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{
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return (c >= '0' && c <= '9');
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}
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/**
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* is_valid_tlv
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*
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* Perform basic sanity checks on a TLV field. The TLV is pointed to
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* by the parameter provided.
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* 1. The type code is not reserved (0x00 or 0xFF)
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*/
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static inline bool is_valid_tlv(struct tlvinfo_tlv *tlv)
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{
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return((tlv->type != 0x00) && (tlv->type != 0xFF));
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}
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/**
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* is_hex
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*
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* Tests if character is an ASCII hex digit
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*/
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static inline u8 is_hex(char p)
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{
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return (((p >= '0') && (p <= '9')) ||
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((p >= 'A') && (p <= 'F')) ||
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((p >= 'a') && (p <= 'f')));
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}
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/**
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* is_checksum_valid
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*
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* Validate the checksum in the provided TlvInfo EEPROM data. First,
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* verify that the TlvInfo header is valid, then make sure the last
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* TLV is a CRC-32 TLV. Then calculate the CRC over the EEPROM data
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* and compare it to the value stored in the EEPROM CRC-32 TLV.
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*/
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static bool is_checksum_valid(u8 *eeprom)
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{
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struct tlvinfo_header *eeprom_hdr = to_header(eeprom);
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struct tlvinfo_tlv *eeprom_crc;
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unsigned int calc_crc;
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unsigned int stored_crc;
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// Is the eeprom header valid?
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if (!is_valid_tlvinfo_header(eeprom_hdr))
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return false;
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// Is the last TLV a CRC?
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eeprom_crc = to_entry(&eeprom[HDR_SIZE +
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be16_to_cpu(eeprom_hdr->totallen) - (ENT_SIZE + 4)]);
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if (eeprom_crc->type != TLV_CODE_CRC_32 || eeprom_crc->length != 4)
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return false;
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// Calculate the checksum
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calc_crc = crc32(0, (void *)eeprom,
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HDR_SIZE + be16_to_cpu(eeprom_hdr->totallen) - 4);
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stored_crc = (eeprom_crc->value[0] << 24) |
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(eeprom_crc->value[1] << 16) |
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(eeprom_crc->value[2] << 8) |
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eeprom_crc->value[3];
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return calc_crc == stored_crc;
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}
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/**
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* read_eeprom
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*
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* Read the EEPROM into memory, if it hasn't already been read.
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*/
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static int read_eeprom(u8 *eeprom)
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{
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int ret;
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struct tlvinfo_header *eeprom_hdr = to_header(eeprom);
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struct tlvinfo_tlv *eeprom_tlv = to_entry(&eeprom[HDR_SIZE]);
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if (has_been_read)
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return 0;
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/* Read the header */
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ret = read_tlv_eeprom((void *)eeprom_hdr, 0, HDR_SIZE, current_dev);
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/* If the header was successfully read, read the TLVs */
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if (ret == 0 && is_valid_tlvinfo_header(eeprom_hdr))
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ret = read_tlv_eeprom((void *)eeprom_tlv, HDR_SIZE,
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be16_to_cpu(eeprom_hdr->totallen),
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current_dev);
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// If the contents are invalid, start over with default contents
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if (!is_valid_tlvinfo_header(eeprom_hdr) ||
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!is_checksum_valid(eeprom)) {
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strcpy(eeprom_hdr->signature, TLV_INFO_ID_STRING);
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eeprom_hdr->version = TLV_INFO_VERSION;
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eeprom_hdr->totallen = cpu_to_be16(0);
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update_crc(eeprom);
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}
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has_been_read = 1;
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#ifdef DEBUG
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show_eeprom(eeprom);
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#endif
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return ret;
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}
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/**
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* show_eeprom
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*
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* Display the contents of the EEPROM
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*/
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static void show_eeprom(u8 *eeprom)
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{
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int tlv_end;
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int curr_tlv;
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struct tlvinfo_header *eeprom_hdr = to_header(eeprom);
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struct tlvinfo_tlv *eeprom_tlv;
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if (!is_valid_tlvinfo_header(eeprom_hdr)) {
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printf("EEPROM does not contain data in a valid TlvInfo format.\n");
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return;
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}
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printf("TLV: %u\n", current_dev);
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printf("TlvInfo Header:\n");
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printf(" Id String: %s\n", eeprom_hdr->signature);
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printf(" Version: %d\n", eeprom_hdr->version);
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printf(" Total Length: %d\n", be16_to_cpu(eeprom_hdr->totallen));
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printf("TLV Name Code Len Value\n");
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printf("-------------------- ---- --- -----\n");
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curr_tlv = HDR_SIZE;
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tlv_end = HDR_SIZE + be16_to_cpu(eeprom_hdr->totallen);
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while (curr_tlv < tlv_end) {
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eeprom_tlv = to_entry(&eeprom[curr_tlv]);
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if (!is_valid_tlv(eeprom_tlv)) {
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printf("Invalid TLV field starting at EEPROM offset %d\n",
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curr_tlv);
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return;
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}
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decode_tlv(eeprom_tlv);
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curr_tlv += ENT_SIZE + eeprom_tlv->length;
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}
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printf("Checksum is %s.\n",
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is_checksum_valid(eeprom) ? "valid" : "invalid");
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#ifdef DEBUG
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printf("EEPROM dump: (0x%x bytes)", TLV_INFO_MAX_LEN);
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for (i = 0; i < TLV_INFO_MAX_LEN; i++) {
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if ((i % 16) == 0)
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printf("\n%02X: ", i);
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printf("%02X ", eeprom[i]);
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}
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printf("\n");
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#endif
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}
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/**
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* Struct for displaying the TLV codes and names.
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*/
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struct tlv_code_desc {
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u8 m_code;
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char *m_name;
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};
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/**
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* List of TLV codes and names.
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*/
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static struct tlv_code_desc tlv_code_list[] = {
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{ TLV_CODE_PRODUCT_NAME, "Product Name"},
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{ TLV_CODE_PART_NUMBER, "Part Number"},
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{ TLV_CODE_SERIAL_NUMBER, "Serial Number"},
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{ TLV_CODE_MAC_BASE, "Base MAC Address"},
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{ TLV_CODE_MANUF_DATE, "Manufacture Date"},
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{ TLV_CODE_DEVICE_VERSION, "Device Version"},
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{ TLV_CODE_LABEL_REVISION, "Label Revision"},
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{ TLV_CODE_PLATFORM_NAME, "Platform Name"},
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{ TLV_CODE_ONIE_VERSION, "ONIE Version"},
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{ TLV_CODE_MAC_SIZE, "MAC Addresses"},
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{ TLV_CODE_MANUF_NAME, "Manufacturer"},
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{ TLV_CODE_MANUF_COUNTRY, "Country Code"},
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{ TLV_CODE_VENDOR_NAME, "Vendor Name"},
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{ TLV_CODE_DIAG_VERSION, "Diag Version"},
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{ TLV_CODE_SERVICE_TAG, "Service Tag"},
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{ TLV_CODE_VENDOR_EXT, "Vendor Extension"},
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{ TLV_CODE_CRC_32, "CRC-32"},
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};
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/**
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* Look up a TLV name by its type.
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*/
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static inline const char *tlv_type2name(u8 type)
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{
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char *name = "Unknown";
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int i;
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for (i = 0; i < ARRAY_SIZE(tlv_code_list); i++) {
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if (tlv_code_list[i].m_code == type) {
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name = tlv_code_list[i].m_name;
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break;
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}
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}
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return name;
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}
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/*
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* decode_tlv
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*
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* Print a string representing the contents of the TLV field. The format of
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* the string is:
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* 1. The name of the field left justified in 20 characters
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* 2. The type code in hex right justified in 5 characters
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* 3. The length in decimal right justified in 4 characters
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* 4. The value, left justified in however many characters it takes
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* The validity of EEPROM contents and the TLV field have been verified
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* prior to calling this function.
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*/
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#define DECODE_NAME_MAX 20
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/*
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* The max decode value is currently for the 'raw' type or the 'vendor
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* extension' type, both of which have the same decode format. The
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* max decode string size is computed as follows:
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*
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* strlen(" 0xFF") * TLV_VALUE_MAX_LEN + 1
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*
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*/
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#define DECODE_VALUE_MAX ((5 * TLV_VALUE_MAX_LEN) + 1)
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static void decode_tlv(struct tlvinfo_tlv *tlv)
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{
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char name[DECODE_NAME_MAX];
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char value[DECODE_VALUE_MAX];
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int i;
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strncpy(name, tlv_type2name(tlv->type), DECODE_NAME_MAX);
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switch (tlv->type) {
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case TLV_CODE_PRODUCT_NAME:
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case TLV_CODE_PART_NUMBER:
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case TLV_CODE_SERIAL_NUMBER:
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case TLV_CODE_MANUF_DATE:
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case TLV_CODE_LABEL_REVISION:
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case TLV_CODE_PLATFORM_NAME:
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case TLV_CODE_ONIE_VERSION:
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case TLV_CODE_MANUF_NAME:
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case TLV_CODE_MANUF_COUNTRY:
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case TLV_CODE_VENDOR_NAME:
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case TLV_CODE_DIAG_VERSION:
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case TLV_CODE_SERVICE_TAG:
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memcpy(value, tlv->value, tlv->length);
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value[tlv->length] = 0;
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break;
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case TLV_CODE_MAC_BASE:
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sprintf(value, "%02X:%02X:%02X:%02X:%02X:%02X",
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tlv->value[0], tlv->value[1], tlv->value[2],
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tlv->value[3], tlv->value[4], tlv->value[5]);
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break;
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case TLV_CODE_DEVICE_VERSION:
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sprintf(value, "%u", tlv->value[0]);
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break;
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case TLV_CODE_MAC_SIZE:
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sprintf(value, "%u", (tlv->value[0] << 8) | tlv->value[1]);
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break;
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case TLV_CODE_VENDOR_EXT:
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value[0] = 0;
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for (i = 0; (i < (DECODE_VALUE_MAX / 5)) && (i < tlv->length);
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i++) {
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sprintf(value, "%s 0x%02X", value, tlv->value[i]);
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}
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break;
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case TLV_CODE_CRC_32:
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sprintf(value, "0x%02X%02X%02X%02X",
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tlv->value[0], tlv->value[1],
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tlv->value[2], tlv->value[3]);
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break;
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default:
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value[0] = 0;
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for (i = 0; (i < (DECODE_VALUE_MAX / 5)) && (i < tlv->length);
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i++) {
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sprintf(value, "%s 0x%02X", value, tlv->value[i]);
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}
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break;
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}
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name[DECODE_NAME_MAX - 1] = 0;
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printf("%-20s 0x%02X %3d %s\n", name, tlv->type, tlv->length, value);
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}
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/**
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* update_crc
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*
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* This function updates the CRC-32 TLV. If there is no CRC-32 TLV, then
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* one is added. This function should be called after each update to the
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* EEPROM structure, to make sure the CRC is always correct.
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*/
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static void update_crc(u8 *eeprom)
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{
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struct tlvinfo_header *eeprom_hdr = to_header(eeprom);
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struct tlvinfo_tlv *eeprom_crc;
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unsigned int calc_crc;
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int eeprom_index;
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// Discover the CRC TLV
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if (!tlvinfo_find_tlv(eeprom, TLV_CODE_CRC_32, &eeprom_index)) {
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unsigned int totallen = be16_to_cpu(eeprom_hdr->totallen);
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if ((totallen + ENT_SIZE + 4) > TLV_TOTAL_LEN_MAX)
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return;
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eeprom_index = HDR_SIZE + totallen;
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eeprom_hdr->totallen = cpu_to_be16(totallen + ENT_SIZE + 4);
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}
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eeprom_crc = to_entry(&eeprom[eeprom_index]);
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eeprom_crc->type = TLV_CODE_CRC_32;
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eeprom_crc->length = 4;
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// Calculate the checksum
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calc_crc = crc32(0, (void *)eeprom,
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HDR_SIZE + be16_to_cpu(eeprom_hdr->totallen) - 4);
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eeprom_crc->value[0] = (calc_crc >> 24) & 0xFF;
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eeprom_crc->value[1] = (calc_crc >> 16) & 0xFF;
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eeprom_crc->value[2] = (calc_crc >> 8) & 0xFF;
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eeprom_crc->value[3] = (calc_crc >> 0) & 0xFF;
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}
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/**
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* prog_eeprom
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*
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* Write the EEPROM data from CPU memory to the hardware.
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*/
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static int prog_eeprom(u8 *eeprom)
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{
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int ret = 0;
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struct tlvinfo_header *eeprom_hdr = to_header(eeprom);
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int eeprom_len;
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update_crc(eeprom);
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eeprom_len = HDR_SIZE + be16_to_cpu(eeprom_hdr->totallen);
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ret = write_tlv_eeprom(eeprom, eeprom_len);
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if (ret) {
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printf("Programming failed.\n");
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return -1;
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}
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printf("Programming passed.\n");
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return 0;
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}
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/**
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* show_tlv_code_list - Display the list of TLV codes and names
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*/
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void show_tlv_code_list(void)
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{
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int i;
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printf("TLV Code TLV Name\n");
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printf("======== =================\n");
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for (i = 0; i < ARRAY_SIZE(tlv_code_list); i++) {
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printf("0x%02X %s\n",
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tlv_code_list[i].m_code,
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tlv_code_list[i].m_name);
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}
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}
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/**
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* do_tlv_eeprom
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*
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* This function implements the tlv_eeprom command.
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*/
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int do_tlv_eeprom(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
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{
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char cmd;
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struct tlvinfo_header *eeprom_hdr = to_header(eeprom);
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// If no arguments, read the EERPOM and display its contents
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if (argc == 1) {
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read_eeprom(eeprom);
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show_eeprom(eeprom);
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return 0;
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}
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// We only look at the first character to the command, so "read" and
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// "reset" will both be treated as "read".
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cmd = argv[1][0];
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// Read the EEPROM contents
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if (cmd == 'r') {
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has_been_read = 0;
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if (!read_eeprom(eeprom))
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printf("EEPROM data loaded from device to memory.\n");
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return 0;
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}
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// Subsequent commands require that the EEPROM has already been read.
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if (!has_been_read) {
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printf("Please read the EEPROM data first, using the 'tlv_eeprom read' command.\n");
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return 0;
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}
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// Handle the commands that don't take parameters
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if (argc == 2) {
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switch (cmd) {
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case 'w': /* write */
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prog_eeprom(eeprom);
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break;
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case 'e': /* erase */
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strcpy(eeprom_hdr->signature, TLV_INFO_ID_STRING);
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eeprom_hdr->version = TLV_INFO_VERSION;
|
|
eeprom_hdr->totallen = cpu_to_be16(0);
|
|
update_crc(eeprom);
|
|
printf("EEPROM data in memory reset.\n");
|
|
break;
|
|
case 'l': /* list */
|
|
show_tlv_code_list();
|
|
break;
|
|
case 'd': /* dev */
|
|
show_tlv_devices();
|
|
break;
|
|
default:
|
|
cmd_usage(cmdtp);
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// The set command takes one or two args.
|
|
if (argc > 4) {
|
|
cmd_usage(cmdtp);
|
|
return 0;
|
|
}
|
|
|
|
// Set command. If the TLV exists in the EEPROM, delete it. Then if
|
|
// data was supplied for this TLV add the TLV with the new contents at
|
|
// the end.
|
|
if (cmd == 's') {
|
|
int tcode;
|
|
|
|
tcode = simple_strtoul(argv[2], NULL, 0);
|
|
tlvinfo_delete_tlv(eeprom, tcode);
|
|
if (argc == 4)
|
|
tlvinfo_add_tlv(eeprom, tcode, argv[3]);
|
|
} else if (cmd == 'd') { /* 'dev' command */
|
|
unsigned int devnum;
|
|
|
|
devnum = simple_strtoul(argv[2], NULL, 0);
|
|
if (devnum > MAX_TLV_DEVICES || !tlv_devices[devnum]) {
|
|
printf("Invalid device number\n");
|
|
return 0;
|
|
}
|
|
current_dev = devnum;
|
|
has_been_read = 0;
|
|
} else {
|
|
cmd_usage(cmdtp);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* This macro defines the tlv_eeprom command line command.
|
|
*/
|
|
U_BOOT_CMD(tlv_eeprom, 4, 1, do_tlv_eeprom,
|
|
"Display and program the system EEPROM data block.",
|
|
"[read|write|set <type_code> <string_value>|erase|list]\n"
|
|
"tlv_eeprom\n"
|
|
" - With no arguments display the current contents.\n"
|
|
"tlv_eeprom dev [dev]\n"
|
|
" - List devices or set current EEPROM device.\n"
|
|
"tlv_eeprom read\n"
|
|
" - Load EEPROM data from device to memory.\n"
|
|
"tlv_eeprom write\n"
|
|
" - Write the EEPROM data to persistent storage.\n"
|
|
"tlv_eeprom set <type_code> <string_value>\n"
|
|
" - Set a field to a value.\n"
|
|
" - If no string_value, field is deleted.\n"
|
|
" - Use 'tlv_eeprom write' to make changes permanent.\n"
|
|
"tlv_eeprom erase\n"
|
|
" - Reset the in memory EEPROM data.\n"
|
|
" - Use 'tlv_eeprom read' to refresh the in memory EEPROM data.\n"
|
|
" - Use 'tlv_eeprom write' to make changes permanent.\n"
|
|
"tlv_eeprom list\n"
|
|
" - List the understood TLV codes and names.\n"
|
|
);
|
|
|
|
/**
|
|
* tlvinfo_find_tlv
|
|
*
|
|
* This function finds the TLV with the supplied code in the EERPOM.
|
|
* An offset from the beginning of the EEPROM is returned in the
|
|
* eeprom_index parameter if the TLV is found.
|
|
*/
|
|
static bool tlvinfo_find_tlv(u8 *eeprom, u8 tcode, int *eeprom_index)
|
|
{
|
|
struct tlvinfo_header *eeprom_hdr = to_header(eeprom);
|
|
struct tlvinfo_tlv *eeprom_tlv;
|
|
int eeprom_end;
|
|
|
|
// Search through the TLVs, looking for the first one which matches the
|
|
// supplied type code.
|
|
*eeprom_index = HDR_SIZE;
|
|
eeprom_end = HDR_SIZE + be16_to_cpu(eeprom_hdr->totallen);
|
|
while (*eeprom_index < eeprom_end) {
|
|
eeprom_tlv = to_entry(&eeprom[*eeprom_index]);
|
|
if (!is_valid_tlv(eeprom_tlv))
|
|
return false;
|
|
if (eeprom_tlv->type == tcode)
|
|
return true;
|
|
*eeprom_index += ENT_SIZE + eeprom_tlv->length;
|
|
}
|
|
return(false);
|
|
}
|
|
|
|
/**
|
|
* tlvinfo_delete_tlv
|
|
*
|
|
* This function deletes the TLV with the specified type code from the
|
|
* EEPROM.
|
|
*/
|
|
static bool tlvinfo_delete_tlv(u8 *eeprom, u8 code)
|
|
{
|
|
int eeprom_index;
|
|
int tlength;
|
|
struct tlvinfo_header *eeprom_hdr = to_header(eeprom);
|
|
struct tlvinfo_tlv *eeprom_tlv;
|
|
|
|
// Find the TLV and then move all following TLVs "forward"
|
|
if (tlvinfo_find_tlv(eeprom, code, &eeprom_index)) {
|
|
eeprom_tlv = to_entry(&eeprom[eeprom_index]);
|
|
tlength = ENT_SIZE + eeprom_tlv->length;
|
|
memcpy(&eeprom[eeprom_index], &eeprom[eeprom_index + tlength],
|
|
HDR_SIZE +
|
|
be16_to_cpu(eeprom_hdr->totallen) - eeprom_index -
|
|
tlength);
|
|
eeprom_hdr->totallen =
|
|
cpu_to_be16(be16_to_cpu(eeprom_hdr->totallen) -
|
|
tlength);
|
|
update_crc(eeprom);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* tlvinfo_add_tlv
|
|
*
|
|
* This function adds a TLV to the EEPROM, converting the value (a string) to
|
|
* the format in which it will be stored in the EEPROM.
|
|
*/
|
|
#define MAX_TLV_VALUE_LEN 256
|
|
static bool tlvinfo_add_tlv(u8 *eeprom, int tcode, char *strval)
|
|
{
|
|
struct tlvinfo_header *eeprom_hdr = to_header(eeprom);
|
|
struct tlvinfo_tlv *eeprom_tlv;
|
|
int new_tlv_len = 0;
|
|
u32 value;
|
|
char data[MAX_TLV_VALUE_LEN];
|
|
int eeprom_index;
|
|
|
|
// Encode each TLV type into the format to be stored in the EERPOM
|
|
switch (tcode) {
|
|
case TLV_CODE_PRODUCT_NAME:
|
|
case TLV_CODE_PART_NUMBER:
|
|
case TLV_CODE_SERIAL_NUMBER:
|
|
case TLV_CODE_LABEL_REVISION:
|
|
case TLV_CODE_PLATFORM_NAME:
|
|
case TLV_CODE_ONIE_VERSION:
|
|
case TLV_CODE_MANUF_NAME:
|
|
case TLV_CODE_MANUF_COUNTRY:
|
|
case TLV_CODE_VENDOR_NAME:
|
|
case TLV_CODE_DIAG_VERSION:
|
|
case TLV_CODE_SERVICE_TAG:
|
|
strncpy(data, strval, MAX_TLV_VALUE_LEN);
|
|
new_tlv_len = min_t(size_t, MAX_TLV_VALUE_LEN, strlen(strval));
|
|
break;
|
|
case TLV_CODE_DEVICE_VERSION:
|
|
value = simple_strtoul(strval, NULL, 0);
|
|
if (value >= 256) {
|
|
printf("ERROR: Device version must be 255 or less. Value supplied: %u",
|
|
value);
|
|
return false;
|
|
}
|
|
data[0] = value & 0xFF;
|
|
new_tlv_len = 1;
|
|
break;
|
|
case TLV_CODE_MAC_SIZE:
|
|
value = simple_strtoul(strval, NULL, 0);
|
|
if (value >= 65536) {
|
|
printf("ERROR: MAC Size must be 65535 or less. Value supplied: %u",
|
|
value);
|
|
return false;
|
|
}
|
|
data[0] = (value >> 8) & 0xFF;
|
|
data[1] = value & 0xFF;
|
|
new_tlv_len = 2;
|
|
break;
|
|
case TLV_CODE_MANUF_DATE:
|
|
if (set_date(data, strval) != 0)
|
|
return false;
|
|
new_tlv_len = 19;
|
|
break;
|
|
case TLV_CODE_MAC_BASE:
|
|
if (set_mac(data, strval) != 0)
|
|
return false;
|
|
new_tlv_len = 6;
|
|
break;
|
|
case TLV_CODE_CRC_32:
|
|
printf("WARNING: The CRC TLV is set automatically and cannot be set manually.\n");
|
|
return false;
|
|
case TLV_CODE_VENDOR_EXT:
|
|
default:
|
|
if (set_bytes(data, strval, &new_tlv_len) != 0)
|
|
return false;
|
|
break;
|
|
}
|
|
|
|
// Is there room for this TLV?
|
|
if ((be16_to_cpu(eeprom_hdr->totallen) + ENT_SIZE + new_tlv_len) >
|
|
TLV_TOTAL_LEN_MAX) {
|
|
printf("ERROR: There is not enough room in the EERPOM to save data.\n");
|
|
return false;
|
|
}
|
|
|
|
// Add TLV at the end, overwriting CRC TLV if it exists
|
|
if (tlvinfo_find_tlv(eeprom, TLV_CODE_CRC_32, &eeprom_index))
|
|
eeprom_hdr->totallen =
|
|
cpu_to_be16(be16_to_cpu(eeprom_hdr->totallen) -
|
|
ENT_SIZE - 4);
|
|
else
|
|
eeprom_index = HDR_SIZE + be16_to_cpu(eeprom_hdr->totallen);
|
|
eeprom_tlv = to_entry(&eeprom[eeprom_index]);
|
|
eeprom_tlv->type = tcode;
|
|
eeprom_tlv->length = new_tlv_len;
|
|
memcpy(eeprom_tlv->value, data, new_tlv_len);
|
|
|
|
// Update the total length and calculate (add) a new CRC-32 TLV
|
|
eeprom_hdr->totallen = cpu_to_be16(be16_to_cpu(eeprom_hdr->totallen) +
|
|
ENT_SIZE + new_tlv_len);
|
|
update_crc(eeprom);
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* set_mac
|
|
*
|
|
* Converts a string MAC address into a binary buffer.
|
|
*
|
|
* This function takes a pointer to a MAC address string
|
|
* (i.e."XX:XX:XX:XX:XX:XX", where "XX" is a two-digit hex number).
|
|
* The string format is verified and then converted to binary and
|
|
* stored in a buffer.
|
|
*/
|
|
static int set_mac(char *buf, const char *string)
|
|
{
|
|
char *p = (char *)string;
|
|
int i;
|
|
int err = 0;
|
|
char *end;
|
|
|
|
if (!p) {
|
|
printf("ERROR: NULL mac addr string passed in.\n");
|
|
return -1;
|
|
}
|
|
|
|
if (strlen(p) != 17) {
|
|
printf("ERROR: MAC address strlen() != 17 -- %zu\n", strlen(p));
|
|
printf("ERROR: Bad MAC address format: %s\n", string);
|
|
return -1;
|
|
}
|
|
|
|
for (i = 0; i < 17; i++) {
|
|
if ((i % 3) == 2) {
|
|
if (p[i] != ':') {
|
|
err++;
|
|
printf("ERROR: mac: p[%i] != :, found: `%c'\n",
|
|
i, p[i]);
|
|
break;
|
|
}
|
|
continue;
|
|
} else if (!is_hex(p[i])) {
|
|
err++;
|
|
printf("ERROR: mac: p[%i] != hex digit, found: `%c'\n",
|
|
i, p[i]);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (err != 0) {
|
|
printf("ERROR: Bad MAC address format: %s\n", string);
|
|
return -1;
|
|
}
|
|
|
|
/* Convert string to binary */
|
|
for (i = 0, p = (char *)string; i < 6; i++) {
|
|
buf[i] = p ? simple_strtoul(p, &end, 16) : 0;
|
|
if (p)
|
|
p = (*end) ? end + 1 : end;
|
|
}
|
|
|
|
if (!is_valid_ethaddr((u8 *)buf)) {
|
|
printf("ERROR: MAC address must not be 00:00:00:00:00:00, a multicast address or FF:FF:FF:FF:FF:FF.\n");
|
|
printf("ERROR: Bad MAC address format: %s\n", string);
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* set_date
|
|
*
|
|
* Validates the format of the data string
|
|
*
|
|
* This function takes a pointer to a date string (i.e. MM/DD/YYYY hh:mm:ss)
|
|
* and validates that the format is correct. If so the string is copied
|
|
* to the supplied buffer.
|
|
*/
|
|
static int set_date(char *buf, const char *string)
|
|
{
|
|
int i;
|
|
|
|
if (!string) {
|
|
printf("ERROR: NULL date string passed in.\n");
|
|
return -1;
|
|
}
|
|
|
|
if (strlen(string) != 19) {
|
|
printf("ERROR: Date strlen() != 19 -- %zu\n", strlen(string));
|
|
printf("ERROR: Bad date format (MM/DD/YYYY hh:mm:ss): %s\n",
|
|
string);
|
|
return -1;
|
|
}
|
|
|
|
for (i = 0; string[i] != 0; i++) {
|
|
switch (i) {
|
|
case 2:
|
|
case 5:
|
|
if (string[i] != '/') {
|
|
printf("ERROR: Bad date format (MM/DD/YYYY hh:mm:ss): %s\n",
|
|
string);
|
|
return -1;
|
|
}
|
|
break;
|
|
case 10:
|
|
if (string[i] != ' ') {
|
|
printf("ERROR: Bad date format (MM/DD/YYYY hh:mm:ss): %s\n",
|
|
string);
|
|
return -1;
|
|
}
|
|
break;
|
|
case 13:
|
|
case 16:
|
|
if (string[i] != ':') {
|
|
printf("ERROR: Bad date format (MM/DD/YYYY hh:mm:ss): %s\n",
|
|
string);
|
|
return -1;
|
|
}
|
|
break;
|
|
default:
|
|
if (!is_digit(string[i])) {
|
|
printf("ERROR: Bad date format (MM/DD/YYYY hh:mm:ss): %s\n",
|
|
string);
|
|
return -1;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
strcpy(buf, string);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* set_bytes
|
|
*
|
|
* Converts a space-separated string of decimal numbers into a
|
|
* buffer of bytes.
|
|
*
|
|
* This function takes a pointer to a space-separated string of decimal
|
|
* numbers (i.e. "128 0x55 0321") with "C" standard radix specifiers
|
|
* and converts them to an array of bytes.
|
|
*/
|
|
static int set_bytes(char *buf, const char *string, int *converted_accum)
|
|
{
|
|
char *p = (char *)string;
|
|
int i;
|
|
uint byte;
|
|
|
|
if (!p) {
|
|
printf("ERROR: NULL string passed in.\n");
|
|
return -1;
|
|
}
|
|
|
|
/* Convert string to bytes */
|
|
for (i = 0, p = (char *)string; (i < TLV_VALUE_MAX_LEN) && (*p != 0);
|
|
i++) {
|
|
while ((*p == ' ') || (*p == '\t') || (*p == ',') ||
|
|
(*p == ';')) {
|
|
p++;
|
|
}
|
|
if (*p != 0) {
|
|
if (!is_digit(*p)) {
|
|
printf("ERROR: Non-digit found in byte string: (%s)\n",
|
|
string);
|
|
return -1;
|
|
}
|
|
byte = simple_strtoul(p, &p, 0);
|
|
if (byte >= 256) {
|
|
printf("ERROR: The value specified is greater than 255: (%u) in string: %s\n",
|
|
byte, string);
|
|
return -1;
|
|
}
|
|
buf[i] = byte & 0xFF;
|
|
}
|
|
}
|
|
|
|
if (i == TLV_VALUE_MAX_LEN && (*p != 0)) {
|
|
printf("ERROR: Trying to assign too many bytes (max: %d) in string: %s\n",
|
|
TLV_VALUE_MAX_LEN, string);
|
|
return -1;
|
|
}
|
|
|
|
*converted_accum = i;
|
|
return 0;
|
|
}
|
|
|
|
static void show_tlv_devices(void)
|
|
{
|
|
unsigned int dev;
|
|
|
|
for (dev = 0; dev < MAX_TLV_DEVICES; dev++)
|
|
if (tlv_devices[dev])
|
|
printf("TLV: %u%s\n", dev,
|
|
(dev == current_dev) ? " (*)" : "");
|
|
}
|
|
|
|
static int find_tlv_devices(struct udevice **tlv_devices_p)
|
|
{
|
|
int ret;
|
|
int count_dev = 0;
|
|
struct udevice *dev;
|
|
|
|
for (ret = uclass_first_device_check(UCLASS_I2C_EEPROM, &dev);
|
|
dev;
|
|
ret = uclass_next_device_check(&dev)) {
|
|
if (ret == 0)
|
|
tlv_devices_p[count_dev++] = dev;
|
|
if (count_dev >= MAX_TLV_DEVICES)
|
|
break;
|
|
}
|
|
|
|
return (count_dev == 0) ? -ENODEV : 0;
|
|
}
|
|
|
|
static struct udevice *find_tlv_device_by_index(int dev_num)
|
|
{
|
|
struct udevice *local_tlv_devices[MAX_TLV_DEVICES] = {};
|
|
struct udevice **tlv_devices_p;
|
|
int ret;
|
|
|
|
if (gd->flags & (GD_FLG_RELOC | GD_FLG_SPL_INIT)) {
|
|
/* Assume BSS is initialized; use static data */
|
|
if (tlv_devices[dev_num])
|
|
return tlv_devices[dev_num];
|
|
tlv_devices_p = tlv_devices;
|
|
} else {
|
|
tlv_devices_p = local_tlv_devices;
|
|
}
|
|
|
|
ret = find_tlv_devices(tlv_devices_p);
|
|
if (ret == 0 && tlv_devices_p[dev_num])
|
|
return tlv_devices_p[dev_num];
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* read_tlv_eeprom - read the hwinfo from i2c EEPROM
|
|
*/
|
|
int read_tlv_eeprom(void *eeprom, int offset, int len, int dev_num)
|
|
{
|
|
struct udevice *dev;
|
|
|
|
if (dev_num >= MAX_TLV_DEVICES)
|
|
return -EINVAL;
|
|
|
|
dev = find_tlv_device_by_index(dev_num);
|
|
if (!dev)
|
|
return -ENODEV;
|
|
|
|
return i2c_eeprom_read(dev, offset, eeprom, len);
|
|
}
|
|
|
|
/**
|
|
* write_tlv_eeprom - write the hwinfo to i2c EEPROM
|
|
*/
|
|
int write_tlv_eeprom(void *eeprom, int len)
|
|
{
|
|
if (!(gd->flags & GD_FLG_RELOC))
|
|
return -ENODEV;
|
|
if (!tlv_devices[current_dev])
|
|
return -ENODEV;
|
|
|
|
return i2c_eeprom_write(tlv_devices[current_dev], 0, eeprom, len);
|
|
}
|
|
|
|
int read_tlvinfo_tlv_eeprom(void *eeprom, struct tlvinfo_header **hdr,
|
|
struct tlvinfo_tlv **first_entry, int dev_num)
|
|
{
|
|
int ret;
|
|
struct tlvinfo_header *tlv_hdr;
|
|
struct tlvinfo_tlv *tlv_ent;
|
|
|
|
/* Read TLV header */
|
|
ret = read_tlv_eeprom(eeprom, 0, HDR_SIZE, dev_num);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
tlv_hdr = eeprom;
|
|
if (!is_valid_tlvinfo_header(tlv_hdr))
|
|
return -EINVAL;
|
|
|
|
/* Read TLV entries */
|
|
tlv_ent = to_entry(&tlv_hdr[1]);
|
|
ret = read_tlv_eeprom(tlv_ent, HDR_SIZE,
|
|
be16_to_cpu(tlv_hdr->totallen), dev_num);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (!is_checksum_valid(eeprom))
|
|
return -EINVAL;
|
|
|
|
*hdr = tlv_hdr;
|
|
*first_entry = tlv_ent;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* mac_read_from_eeprom
|
|
*
|
|
* Read the MAC addresses from EEPROM
|
|
*
|
|
* This function reads the MAC addresses from EEPROM and sets the
|
|
* appropriate environment variables for each one read.
|
|
*
|
|
* The environment variables are only set if they haven't been set already.
|
|
* This ensures that any user-saved variables are never overwritten.
|
|
*
|
|
* This function must be called after relocation.
|
|
*/
|
|
int mac_read_from_eeprom(void)
|
|
{
|
|
unsigned int i;
|
|
int eeprom_index;
|
|
struct tlvinfo_tlv *eeprom_tlv;
|
|
int maccount;
|
|
u8 macbase[6];
|
|
struct tlvinfo_header *eeprom_hdr = to_header(eeprom);
|
|
|
|
puts("EEPROM: ");
|
|
|
|
if (read_eeprom(eeprom)) {
|
|
printf("Read failed.\n");
|
|
return -1;
|
|
}
|
|
|
|
maccount = 1;
|
|
if (tlvinfo_find_tlv(eeprom, TLV_CODE_MAC_SIZE, &eeprom_index)) {
|
|
eeprom_tlv = to_entry(&eeprom[eeprom_index]);
|
|
maccount = (eeprom_tlv->value[0] << 8) | eeprom_tlv->value[1];
|
|
}
|
|
|
|
memcpy(macbase, "\0\0\0\0\0\0", 6);
|
|
if (tlvinfo_find_tlv(eeprom, TLV_CODE_MAC_BASE, &eeprom_index)) {
|
|
eeprom_tlv = to_entry(&eeprom[eeprom_index]);
|
|
memcpy(macbase, eeprom_tlv->value, 6);
|
|
}
|
|
|
|
for (i = 0; i < maccount; i++) {
|
|
if (is_valid_ethaddr(macbase)) {
|
|
char ethaddr[18];
|
|
char enetvar[11];
|
|
|
|
sprintf(ethaddr, "%02X:%02X:%02X:%02X:%02X:%02X",
|
|
macbase[0], macbase[1], macbase[2],
|
|
macbase[3], macbase[4], macbase[5]);
|
|
sprintf(enetvar, i ? "eth%daddr" : "ethaddr", i);
|
|
/* Only initialize environment variables that are blank
|
|
* (i.e. have not yet been set)
|
|
*/
|
|
if (!env_get(enetvar))
|
|
env_set(enetvar, ethaddr);
|
|
|
|
macbase[5]++;
|
|
if (macbase[5] == 0) {
|
|
macbase[4]++;
|
|
if (macbase[4] == 0) {
|
|
macbase[3]++;
|
|
if (macbase[3] == 0) {
|
|
macbase[0] = 0;
|
|
macbase[1] = 0;
|
|
macbase[2] = 0;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
printf("%s v%u len=%u\n", eeprom_hdr->signature, eeprom_hdr->version,
|
|
be16_to_cpu(eeprom_hdr->totallen));
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* populate_serial_number - read the serial number from EEPROM
|
|
*
|
|
* This function reads the serial number from the EEPROM and sets the
|
|
* appropriate environment variable.
|
|
*
|
|
* The environment variable is only set if it has not been set
|
|
* already. This ensures that any user-saved variables are never
|
|
* overwritten.
|
|
*
|
|
* This function must be called after relocation.
|
|
*/
|
|
int populate_serial_number(void)
|
|
{
|
|
char serialstr[257];
|
|
int eeprom_index;
|
|
struct tlvinfo_tlv *eeprom_tlv;
|
|
|
|
if (env_get("serial#"))
|
|
return 0;
|
|
|
|
if (read_eeprom(eeprom)) {
|
|
printf("Read failed.\n");
|
|
return -1;
|
|
}
|
|
|
|
if (tlvinfo_find_tlv(eeprom, TLV_CODE_SERIAL_NUMBER, &eeprom_index)) {
|
|
eeprom_tlv = to_entry(&eeprom[eeprom_index]);
|
|
memcpy(serialstr, eeprom_tlv->value, eeprom_tlv->length);
|
|
serialstr[eeprom_tlv->length] = 0;
|
|
env_set("serial#", serialstr);
|
|
}
|
|
|
|
return 0;
|
|
}
|