*/
-#include <common.h>
#include <command.h>
#include <dm.h>
#include <i2c.h>
/* File scope function prototypes */
static bool is_checksum_valid(u8 *eeprom);
-static int read_eeprom(u8 *eeprom);
-static void show_eeprom(u8 *eeprom);
+static int read_eeprom(int devnum, u8 *eeprom);
+static void show_eeprom(int devnum, u8 *eeprom);
static void decode_tlv(struct tlvinfo_tlv *tlv);
static void update_crc(u8 *eeprom);
-static int prog_eeprom(u8 *eeprom);
+static int prog_eeprom(int devnum, u8 *eeprom);
static bool tlvinfo_find_tlv(u8 *eeprom, u8 tcode, int *eeprom_index);
static bool tlvinfo_delete_tlv(u8 *eeprom, u8 code);
static bool tlvinfo_add_tlv(u8 *eeprom, int tcode, char *strval);
static int set_mac(char *buf, const char *string);
static int set_date(char *buf, const char *string);
static int set_bytes(char *buf, const char *string, int *converted_accum);
-static void show_tlv_devices(void);
+static void show_tlv_devices(int current_dev);
-/* Set to 1 if we've read EEPROM into memory */
-static int has_been_read;
/* The EERPOM contents after being read into memory */
static u8 eeprom[TLV_INFO_MAX_LEN];
static struct udevice *tlv_devices[MAX_TLV_DEVICES];
-static unsigned int current_dev;
#define to_header(p) ((struct tlvinfo_header *)p)
#define to_entry(p) ((struct tlvinfo_tlv *)p)
*
* Read the EEPROM into memory, if it hasn't already been read.
*/
-static int read_eeprom(u8 *eeprom)
+static int read_eeprom(int devnum, u8 *eeprom)
{
int ret;
struct tlvinfo_header *eeprom_hdr = to_header(eeprom);
struct tlvinfo_tlv *eeprom_tlv = to_entry(&eeprom[HDR_SIZE]);
- if (has_been_read)
- return 0;
-
/* Read the header */
- ret = read_tlv_eeprom((void *)eeprom_hdr, 0, HDR_SIZE, current_dev);
+ ret = read_tlv_eeprom((void *)eeprom_hdr, 0, HDR_SIZE, devnum);
/* If the header was successfully read, read the TLVs */
if (ret == 0 && is_valid_tlvinfo_header(eeprom_hdr))
ret = read_tlv_eeprom((void *)eeprom_tlv, HDR_SIZE,
- be16_to_cpu(eeprom_hdr->totallen),
- current_dev);
+ be16_to_cpu(eeprom_hdr->totallen), devnum);
+ else if (ret == -ENODEV)
+ return ret;
// If the contents are invalid, start over with default contents
if (!is_valid_tlvinfo_header(eeprom_hdr) ||
update_crc(eeprom);
}
- has_been_read = 1;
-
#ifdef DEBUG
- show_eeprom(eeprom);
+ show_eeprom(devnum, eeprom);
#endif
return ret;
*
* Display the contents of the EEPROM
*/
-static void show_eeprom(u8 *eeprom)
+static void show_eeprom(int devnum, u8 *eeprom)
{
int tlv_end;
int curr_tlv;
+#ifdef DEBUG
+ int i;
+#endif
struct tlvinfo_header *eeprom_hdr = to_header(eeprom);
struct tlvinfo_tlv *eeprom_tlv;
return;
}
- printf("TLV: %u\n", current_dev);
+ printf("TLV: %u\n", devnum);
printf("TlvInfo Header:\n");
printf(" Id String: %s\n", eeprom_hdr->signature);
printf(" Version: %d\n", eeprom_hdr->version);
*
* Write the EEPROM data from CPU memory to the hardware.
*/
-static int prog_eeprom(u8 *eeprom)
+static int prog_eeprom(int devnum, u8 *eeprom)
{
int ret = 0;
struct tlvinfo_header *eeprom_hdr = to_header(eeprom);
update_crc(eeprom);
eeprom_len = HDR_SIZE + be16_to_cpu(eeprom_hdr->totallen);
- ret = write_tlv_eeprom(eeprom, eeprom_len);
+ ret = write_tlv_eeprom(eeprom, eeprom_len, devnum);
if (ret) {
printf("Programming failed.\n");
return -1;
{
char cmd;
struct tlvinfo_header *eeprom_hdr = to_header(eeprom);
+ static unsigned int current_dev;
+ /* Set to 1 if we've read EEPROM into memory */
+ static int has_been_read;
+ int ret;
// If no arguments, read the EERPOM and display its contents
if (argc == 1) {
- read_eeprom(eeprom);
- show_eeprom(eeprom);
+ if (!has_been_read) {
+ ret = read_eeprom(current_dev, eeprom);
+ if (ret) {
+ printf("Failed to read EEPROM data from device.\n");
+ return 0;
+ }
+
+ has_been_read = 1;
+ }
+ show_eeprom(current_dev, eeprom);
return 0;
}
// "reset" will both be treated as "read".
cmd = argv[1][0];
+ // select device
+ if (cmd == 'd') {
+ /* 'dev' command */
+ unsigned int devnum;
+
+ devnum = simple_strtoul(argv[2], NULL, 0);
+ if (devnum >= MAX_TLV_DEVICES) {
+ printf("Invalid device number\n");
+ return 0;
+ }
+ current_dev = devnum;
+ has_been_read = 0;
+
+ return 0;
+ }
+
// Read the EEPROM contents
if (cmd == 'r') {
has_been_read = 0;
- if (!read_eeprom(eeprom))
- printf("EEPROM data loaded from device to memory.\n");
- return 0;
+ ret = read_eeprom(current_dev, eeprom);
+ if (ret) {
+ printf("Failed to read EEPROM data from device.\n");
+ return 0;
+ }
+
+ printf("EEPROM data loaded from device to memory.\n");
+ has_been_read = 1;
}
// Subsequent commands require that the EEPROM has already been read.
if (argc == 2) {
switch (cmd) {
case 'w': /* write */
- prog_eeprom(eeprom);
+ prog_eeprom(current_dev, eeprom);
break;
case 'e': /* erase */
strcpy(eeprom_hdr->signature, TLV_INFO_ID_STRING);
show_tlv_code_list();
break;
case 'd': /* dev */
- show_tlv_devices();
+ show_tlv_devices(current_dev);
break;
default:
- cmd_usage(cmdtp);
- break;
+ return CMD_RET_USAGE;
}
return 0;
}
// The set command takes one or two args.
- if (argc > 4) {
- cmd_usage(cmdtp);
- return 0;
- }
+ if (argc > 4)
+ return CMD_RET_USAGE;
// 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
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 CMD_RET_USAGE;
}
return 0;
/* Convert string to binary */
for (i = 0, p = (char *)string; i < 6; i++) {
- buf[i] = p ? simple_strtoul(p, &end, 16) : 0;
+ buf[i] = p ? hextoul(p, &end) : 0;
if (p)
p = (*end) ? end + 1 : end;
}
return 0;
}
-static void show_tlv_devices(void)
+static void show_tlv_devices(int current_dev)
{
unsigned int dev;
/**
* write_tlv_eeprom - write the hwinfo to i2c EEPROM
*/
-int write_tlv_eeprom(void *eeprom, int len)
+int write_tlv_eeprom(void *eeprom, int len, int dev)
{
if (!(gd->flags & GD_FLG_RELOC))
return -ENODEV;
- if (!tlv_devices[current_dev])
+ if (!tlv_devices[dev])
return -ENODEV;
- return i2c_eeprom_write(tlv_devices[current_dev], 0, eeprom, len);
+ return i2c_eeprom_write(tlv_devices[dev], 0, eeprom, len);
}
int read_tlvinfo_tlv_eeprom(void *eeprom, struct tlvinfo_header **hdr,
int maccount;
u8 macbase[6];
struct tlvinfo_header *eeprom_hdr = to_header(eeprom);
+ int devnum = 0; // TODO: support multiple EEPROMs
puts("EEPROM: ");
- if (read_eeprom(eeprom)) {
+ if (read_eeprom(devnum, eeprom)) {
printf("Read failed.\n");
return -1;
}
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)
+int serial_read_from_eeprom(int devnum)
{
char serialstr[257];
int eeprom_index;
if (env_get("serial#"))
return 0;
- if (read_eeprom(eeprom)) {
+ if (read_eeprom(devnum, eeprom)) {
printf("Read failed.\n");
return -1;
}
projects / u-boot.git / blobdiff