diff options
Diffstat (limited to 'board/ti/am65x')
| -rw-r--r-- | board/ti/am65x/README | 32 | ||||
| -rw-r--r-- | board/ti/am65x/evm.c | 15 |
2 files changed, 46 insertions, 1 deletions
diff --git a/board/ti/am65x/README b/board/ti/am65x/README index 16384e05ea..2e3fd9c4a8 100644 --- a/board/ti/am65x/README +++ b/board/ti/am65x/README @@ -261,3 +261,35 @@ To boot kernel from eMMC, use the following commands: => setenv mmcdev 0 => setenv bootpart 0 => boot + +UART: +----- +ROM supports booting from MCU_UART0 via X-Modem protocol. The entire UART-based +boot process up to U-Boot (proper) prompt goes through different stages and uses +different UART peripherals as follows: + + WHO | Loading WHAT | HW Module | Protocol +----------+---------------+-------------+------------ +Boot ROM | tiboot3.bin | MCU_UART0 | X-Modem(*) +R5 SPL | sysfw.itb | MCU_UART0 | Y-Modem(*) +R5 SPL | tispl.bin | MAIN_UART0 | Y-Modem +A53 SPL | u-boot.img | MAIN_UART0 | Y-Modem + +(*) Note that in addition to X/Y-Modem related protocol timeouts the DMSC + watchdog timeout of 3min (typ.) needs to be observed until System Firmware + is fully loaded (from sysfw.itb) and started. + +Example bash script sequence for running on a Linux host PC feeding all boot +artifacts needed to the device: + +MCU_DEV=/dev/ttyUSB1 +MAIN_DEV=/dev/ttyUSB0 + +stty -F $MCU_DEV 115200 cs8 -cstopb -parenb +stty -F $MAIN_DEV 115200 cs8 -cstopb -parenb + +sb --xmodem tiboot3.bin > $MCU_DEV < $MCU_DEV +sb --ymodem sysfw.itb > $MCU_DEV < $MCU_DEV +sb --ymodem tispl.bin > $MAIN_DEV < $MAIN_DEV +sleep 1 +sb --xmodem u-boot.img > $MAIN_DEV < $MAIN_DEV diff --git a/board/ti/am65x/evm.c b/board/ti/am65x/evm.c index ad333ad883..544f872459 100644 --- a/board/ti/am65x/evm.c +++ b/board/ti/am65x/evm.c @@ -127,6 +127,19 @@ int do_board_detect(void) return ret; } +int checkboard(void) +{ + struct ti_am6_eeprom *ep = TI_AM6_EEPROM_DATA; + + if (do_board_detect()) + /* EEPROM not populated */ + printf("Board: %s rev %s\n", "AM6-COMPROCEVM", "E3"); + else + printf("Board: %s rev %s\n", ep->name, ep->version); + + return 0; +} + static void setup_board_eeprom_env(void) { char *name = "am65x"; @@ -272,7 +285,7 @@ static int probe_daughtercards(void) if (strncmp(ep.name, cards[i].card_name, sizeof(ep.name))) continue; - printf("detected %s\n", cards[i].card_name); + printf("Detected: %s rev %s\n", ep.name, ep.version); /* * Populate any MAC addresses from daughtercard into the U-Boot |