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comparison target-utils/libcommon/uartsel.c @ 11:40f607bb0a2c

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target-utils refactored
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Wed, 01 May 2013 07:39:35 +0000
parents
children a7b0b426f9ca
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10:e2e80a09338e 11:40f607bb0a2c
1 /*
2 * uart_select_init() figures out which UART was used to load us
3 * through the boot ROM, and sets things up for us to use the same
4 * UART for our communication.
5 */
6
7 #include "types.h"
8 #include "romvars.h"
9 #include "ns16550.h"
10 #include "halt.h"
11
12 extern struct boot_rom_vars rom_vars;
13
14 struct ns16550_regs *uart_base;
15 char *uart_name;
16
17 uart_select_init()
18 {
19 switch (rom_vars.uart_id) {
20 case 0:
21 uart_base = (struct ns16550_regs *) 0xFFFF5800;
22 uart_name = "MODEM";
23 break;
24 case 1:
25 uart_base = (struct ns16550_regs *) 0xFFFF5000;
26 uart_name = "IrDA";
27 break;
28 default:
29 _exit(HALTCODE_INVALIDUART);
30 }
31 }