FreeCalypso > hg > freecalypso-sw
view target-utils/libcommon/uartsel.c @ 462:6500e1817d9b
doc/Roadmap: written
| author | Michael Spacefalcon <msokolov@ivan.Harhan.ORG> | 
|---|---|
| date | Mon, 23 Jun 2014 20:39:36 +0000 | 
| parents | 40f607bb0a2c | 
| children | a7b0b426f9ca | 
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/* * uart_select_init() figures out which UART was used to load us * through the boot ROM, and sets things up for us to use the same * UART for our communication. */ #include "types.h" #include "romvars.h" #include "ns16550.h" #include "halt.h" extern struct boot_rom_vars rom_vars; struct ns16550_regs *uart_base; char *uart_name; uart_select_init() { switch (rom_vars.uart_id) { case 0: uart_base = (struct ns16550_regs *) 0xFFFF5800; uart_name = "MODEM"; break; case 1: uart_base = (struct ns16550_regs *) 0xFFFF5000; uart_name = "IrDA"; break; default: _exit(HALTCODE_INVALIDUART); } }
