Hi,
For our upcoming SOC, we have a situation where in we need to configure UART console at runtime. Our SOC makes use of NS16550.
I looked through the u-boot tree & found several references for doing the same.
hebbar@linux- server:~/projects/u-boot-git$ gr NS16550_init * board/sheldon/simpc8313/simpc8313.c:145: NS16550_init((NS16550_t)(CONFIG_SYS_IMMR + 0x4500), board/ml2/serial.c:45: (void) NS16550_init (COM_PORTS[0], clock_divisor); board/ml2/serial.c:48: (void) NS16550_init (COM_PORTS[1], clock_divisor); board/MAI/AmigaOneG3SE/serial.c:157: NS16550_init (Com0, clock_divisor); board/MAI/AmigaOneG3SE/serial.c:244: NS16550_init (Com0, clock_divisor); board/freescale/mpc8313erdb/mpc8313erdb.c:138: NS16550_init((NS16550_t)(CONFIG_SYS_IMMR + 0x4500), board/freescale/mpc8315erdb/mpc8315erdb.c:239: NS16550_init((NS16550_t)(CONFIG_SYS_IMMR + 0x4500), board/bmw/serial.c:45: NS16550_init (CONFIG_CONS_INDEX - 1, clock_divisor); board/bmw/ns16550.c:16:volatile struct NS16550 *NS16550_init (int chan, int baud_divisor) board/mvblue/mvblue.c:45: NS16550_init (console, clock_divisor); board/Marvell/common/serial.c:101: (void) NS16550_init (0, clock_divisor); board/Marvell/common/serial.c:104: (void) NS16550_init (1, clock_divisor); board/Marvell/common/ns16550.c:20:volatile struct NS16550 *NS16550_init (int chan, int baud_divisor) board/Marvell/common/ns16550.h:92:volatile struct NS16550 * NS16550_init(int chan, int baud_divisor); board/amirix/ap1000/serial.c:43: (void) NS16550_init (COM_PORTS[0], clock_divisor); board/evb64260/serial.c:103: (void)NS16550_init(COM_PORTS[0], clock_divisor); board/evb64260/serial.c:106: (void)NS16550_init(COM_PORTS[1], clock_divisor);
I would like to know whether this approach is correct and whether this approach is still allowed in current u-boot.
If not, what is the correct approach? I am also looking at CONFIG_SERIAL_MULTI.
Thanks in advance.
Regards Gururaja