xref: /openbmc/linux/arch/arm/mach-omap1/serial.h (revision 7036440e)
1 /*
2  * Copyright (C) 2009 Texas Instruments
3  * Added OMAP4 support- Santosh Shilimkar <santosh.shilimkar@ti.com>
4  *
5  * This program is distributed in the hope that it will be useful,
6  * but WITHOUT ANY WARRANTY; without even the implied warranty of
7  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
8  * GNU General Public License for more details.
9  */
10 
11 #ifndef __ASM_ARCH_SERIAL_H
12 #define __ASM_ARCH_SERIAL_H
13 
14 #include <linux/init.h>
15 
16 /*
17  * Memory entry used for the DEBUG_LL UART configuration, relative to
18  * start of RAM. See also uncompress.h and debug-macro.S.
19  *
20  * Note that using a memory location for storing the UART configuration
21  * has at least two limitations:
22  *
23  * 1. Kernel uncompress code cannot overlap OMAP_UART_INFO as the
24  *    uncompress code could then partially overwrite itself
25  * 2. We assume printascii is called at least once before paging_init,
26  *    and addruart has a chance to read OMAP_UART_INFO
27  */
28 #define OMAP_UART_INFO_OFS	0x3ffc
29 
30 #define OMAP_PORT_SHIFT		2
31 #define OMAP7XX_PORT_SHIFT	0
32 
33 #define OMAP1510_BASE_BAUD	(12000000/16)
34 #define OMAP16XX_BASE_BAUD	(48000000/16)
35 
36 /*
37  * DEBUG_LL port encoding stored into the UART1 scratchpad register by
38  * decomp_setup in uncompress.h
39  */
40 #define OMAP1UART1		11
41 #define OMAP1UART2		12
42 #define OMAP1UART3		13
43 
44 #ifndef __ASSEMBLER__
45 extern void omap_serial_init(void);
46 #endif
47 
48 #endif
49