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xilinx: board: Add support for additional card detection

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The most of Xilinx evaluation boards have FMC connectors which contain
small eeprom for card identification. That's why read content of eeprom and
record it.
Also generate cardX_ variables for easier script handling.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
This commit is contained in:
Michal Simek 2020-08-03 12:57:05 +02:00
parent d61728c8e8
commit a03b594738
1 changed files with 61 additions and 24 deletions
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87
board/xilinx/common/board.c
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@ -62,7 +62,8 @@ struct xilinx_board_description {
u8 mac_addr[EEPROM_HDR_NO_OF_MAC_ADDR][EEPROM_HDR_ETH_ALEN + 1];
};
static struct xilinx_board_description *board_info;
static int highest_id = -1;
static struct xilinx_board_description **board_info;
#define XILINX_I2C_DETECTION_BITS 8
@ -191,15 +192,16 @@ static int xilinx_read_eeprom_single(char *name,
__maybe_unused int xilinx_read_eeprom(void)
{
int id, highest_id;
int id, ret;
char name_buf[8]; /* 8 bytes should be enough for nvmem+number */
struct xilinx_board_description *desc;
highest_id = dev_read_alias_highest_id("nvmem");
/* No nvmem aliases present */
if (highest_id < 0)
return -EINVAL;
board_info = calloc(1, sizeof(*board_info));
board_info = calloc(1, sizeof(desc) * highest_id);
if (!board_info)
return -ENOMEM;
@ -209,12 +211,28 @@ __maybe_unused int xilinx_read_eeprom(void)
for (id = 0; id <= highest_id; id++) {
snprintf(name_buf, sizeof(name_buf), "nvmem%d", id);
/* Ignoring return value for supporting multiple chips */
xilinx_read_eeprom_single(name_buf, board_info);
/* Alloc structure */
desc = board_info[id];
if (!desc) {
desc = calloc(1, sizeof(*desc));
if (!desc)
return -ENOMEM;
board_info[id] = desc;
}
if (board_info->header != EEPROM_HEADER_MAGIC)
free(board_info);
/* Ignoring return value for supporting multiple chips */
ret = xilinx_read_eeprom_single(name_buf, desc);
if (ret) {
free(desc);
board_info[id] = NULL;
}
}
/*
* Consider to clean board_info structure when board/cards are not
* detected.
*/
return 0;
}
@ -253,10 +271,23 @@ void *board_fdt_blob_setup(void)
}
#endif
static int env_set_by_index(const char *name, int index, char *data)
{
char var[32];
if (!index)
sprintf(var, "board_%s", name);
else
sprintf(var, "card%d_%s", index, name);
return env_set(var, data);
}
int board_late_init_xilinx(void)
{
u32 ret = 0;
int i;
int i, id, macid = 0;
struct xilinx_board_description *desc;
phys_size_t bootm_size = gd->ram_size;
if (CONFIG_IS_ENABLED(ARCH_ZYNQ))
@ -267,27 +298,33 @@ int board_late_init_xilinx(void)
ret |= env_set_addr("bootm_low", (void *)gd->ram_base);
ret |= env_set_addr("bootm_size", (void *)bootm_size);
if (board_info) {
if (board_info->manufacturer)
ret |= env_set("manufacturer",
board_info->manufacturer);
if (board_info->name)
ret |= env_set("board_name", board_info->name);
if (board_info->revision)
ret |= env_set("board_rev", board_info->revision);
if (board_info->serial)
ret |= env_set("board_serial", board_info->serial);
for (i = 0; i < EEPROM_HDR_NO_OF_MAC_ADDR; i++) {
if (!board_info->mac_addr[i])
continue;
for (id = 0; id <= highest_id; id++) {
desc = board_info[id];
if (desc && desc->header == EEPROM_HEADER_MAGIC) {
if (desc->manufacturer[0])
ret |= env_set_by_index("manufacturer", id,
desc->manufacturer);
if (desc->name[0])
ret |= env_set_by_index("name", id,
desc->name);
if (desc->revision[0])
ret |= env_set_by_index("rev", id,
desc->revision);
if (desc->serial[0])
ret |= env_set_by_index("serial", id,
desc->serial);
if (!CONFIG_IS_ENABLED(NET))
continue;
if (is_valid_ethaddr((const u8 *)board_info->mac_addr[i]))
ret |= eth_env_set_enetaddr_by_index("eth", i,
board_info->mac_addr[i]);
for (i = 0; i < EEPROM_HDR_NO_OF_MAC_ADDR; i++) {
if (!desc->mac_addr[i])
continue;
if (is_valid_ethaddr((const u8 *)desc->mac_addr[i]))
ret |= eth_env_set_enetaddr_by_index("eth",
macid++, desc->mac_addr[i]);
}
}
}