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board: am335x: Set serial# variable

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serial# variable is needed to show the device correctly in "fastboot
devices" output. It's useful when we have several devices (in fastboot
mode) connected to single host and want to choose which one to flash.

We can't use omap_die_id_serial() for this, because AM335x lacks
DIE_ID, as can be seen from AM335x TRM. Let's do next:
 - reuse board_serial variable (obtained from EEPROM in
   set_board_info_env() function) to set serial#
 - if board_serial is "unknown", reuse ethaddr variable to set serial#

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
Sam Protsenko 2018-02-28 00:26:15 +02:00 committed by Tom Rini
parent 162a7de5e5
commit fc228dc96c
1 changed files with 10 additions and 0 deletions
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10
board/ti/am335x/board.c
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@ -767,6 +767,16 @@ int board_late_init(void)
}
#endif
if (!env_get("serial#")) {
char *board_serial = env_get("board_serial");
char *ethaddr = env_get("ethaddr");
if (!board_serial || !strncmp(board_serial, "unknown", 7))
env_set("serial#", ethaddr);
else
env_set("serial#", board_serial);
}
return 0;
}
#endif