forked from Minki/linux
a4f57b8138
Zoom2 and 3 have UARTs only on the external debug board. GPMC needs to be mapped early to use it for DEBUG_LL. Additionally, 0xfb000000 overlaps with other areas, so use 0xfa400000 for the virtual address instead. Note that with the pending serial.c patches you need to set console=ttyS0,115200n8 as it will be the only UART mapped. To use DEBUG_LL, you need to pass also earlyprintk in cmdline. Cc: Allen Pais <allen.pais@ti.com> Acked-by: Vikram Pandita <vikram.pandita@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
108 lines
3.1 KiB
C
108 lines
3.1 KiB
C
/*
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* arch/arm/plat-omap/include/mach/serial.h
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*
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* Copyright (C) 2009 Texas Instruments
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* Addded OMAP4 support- Santosh Shilimkar <santosh.shilimkar@ti.com>
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef __ASM_ARCH_SERIAL_H
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#define __ASM_ARCH_SERIAL_H
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#include <linux/init.h>
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/*
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* Memory entry used for the DEBUG_LL UART configuration. See also
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* uncompress.h and debug-macro.S.
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*
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* Note that using a memory location for storing the UART configuration
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* has at least two limitations:
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*
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* 1. Kernel uncompress code cannot overlap OMAP_UART_INFO as the
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* uncompress code could then partially overwrite itself
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* 2. We assume printascii is called at least once before paging_init,
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* and addruart has a chance to read OMAP_UART_INFO
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*/
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#define OMAP_UART_INFO (PHYS_OFFSET + 0x3ffc)
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/* OMAP1 serial ports */
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#define OMAP1_UART1_BASE 0xfffb0000
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#define OMAP1_UART2_BASE 0xfffb0800
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#define OMAP1_UART3_BASE 0xfffb9800
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/* OMAP2 serial ports */
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#define OMAP2_UART1_BASE 0x4806a000
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#define OMAP2_UART2_BASE 0x4806c000
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#define OMAP2_UART3_BASE 0x4806e000
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/* OMAP3 serial ports */
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#define OMAP3_UART1_BASE OMAP2_UART1_BASE
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#define OMAP3_UART2_BASE OMAP2_UART2_BASE
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#define OMAP3_UART3_BASE 0x49020000
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#define OMAP3_UART4_BASE 0x49042000 /* Only on 36xx */
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/* OMAP4 serial ports */
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#define OMAP4_UART1_BASE OMAP2_UART1_BASE
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#define OMAP4_UART2_BASE OMAP2_UART2_BASE
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#define OMAP4_UART3_BASE 0x48020000
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#define OMAP4_UART4_BASE 0x4806e000
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/* External port on Zoom2/3 */
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#define ZOOM_UART_BASE 0x10000000
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#define ZOOM_UART_VIRT 0xfa400000
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#define OMAP_PORT_SHIFT 2
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#define OMAP7XX_PORT_SHIFT 0
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#define ZOOM_PORT_SHIFT 1
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#define OMAP1510_BASE_BAUD (12000000/16)
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#define OMAP16XX_BASE_BAUD (48000000/16)
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#define OMAP24XX_BASE_BAUD (48000000/16)
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/*
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* DEBUG_LL port encoding stored into the UART1 scratchpad register by
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* decomp_setup in uncompress.h
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*/
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#define OMAP1UART1 11
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#define OMAP1UART2 12
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#define OMAP1UART3 13
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#define OMAP2UART1 21
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#define OMAP2UART2 22
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#define OMAP2UART3 23
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#define OMAP3UART1 OMAP2UART1
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#define OMAP3UART2 OMAP2UART2
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#define OMAP3UART3 33
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#define OMAP3UART4 34 /* Only on 36xx */
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#define OMAP4UART1 OMAP2UART1
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#define OMAP4UART2 OMAP2UART2
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#define OMAP4UART3 43
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#define OMAP4UART4 44
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#define ZOOM_UART 95 /* Only on zoom2/3 */
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/* This is only used by 8250.c for omap1510 */
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#define is_omap_port(pt) ({int __ret = 0; \
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if ((pt)->port.mapbase == OMAP1_UART1_BASE || \
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(pt)->port.mapbase == OMAP1_UART2_BASE || \
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(pt)->port.mapbase == OMAP1_UART3_BASE) \
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__ret = 1; \
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__ret; \
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})
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#ifndef __ASSEMBLER__
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extern void __init omap_serial_early_init(void);
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extern void omap_serial_init(void);
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extern void omap_serial_init_port(int port);
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extern int omap_uart_can_sleep(void);
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extern void omap_uart_check_wakeup(void);
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extern void omap_uart_prepare_suspend(void);
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extern void omap_uart_prepare_idle(int num);
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extern void omap_uart_resume_idle(int num);
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extern void omap_uart_enable_irqs(int enable);
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#endif
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#endif
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