d9f5007491
Zoom2/Zoom3 kind of boards do not use omap uarts for console. These use external debug board for console. So these boards should not have "Uncompressing Kernel...." log put on omap uarts. By interoducing OMAP_LL_DEBUG_NONE option, unnecessary writes to omap uarts is avoided. In future, the DEBUG_LL interface will be enhanced to use external debug board. Signed-off-by: Vikram Pandita <vikram.pandita@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
89 lines
2.1 KiB
C
89 lines
2.1 KiB
C
/*
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* arch/arm/plat-omap/include/mach/uncompress.h
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*
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* Serial port stubs for kernel decompress status messages
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*
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* Initially based on:
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* linux-2.4.15-rmk1-dsplinux1.6/arch/arm/plat-omap/include/mach1510/uncompress.h
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* Copyright (C) 2000 RidgeRun, Inc.
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* Author: Greg Lonnon <glonnon@ridgerun.com>
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*
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* Rewritten by:
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* Author: <source@mvista.com>
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* 2004 (c) MontaVista Software, Inc.
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*
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* This file is licensed under the terms of the GNU General Public License
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* version 2. This program is licensed "as is" without any warranty of any
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* kind, whether express or implied.
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*/
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#include <linux/types.h>
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#include <linux/serial_reg.h>
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#include <plat/serial.h>
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unsigned int system_rev;
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#define UART_OMAP_MDR1 0x08 /* mode definition register */
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#define OMAP_ID_730 0x355F
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#define OMAP_ID_850 0x362C
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#define ID_MASK 0x7fff
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#define check_port(base, shift) ((base[UART_OMAP_MDR1 << shift] & 7) == 0)
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#define omap_get_id() ((*(volatile unsigned int *)(0xfffed404)) >> 12) & ID_MASK
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static void putc(int c)
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{
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volatile u8 * uart = 0;
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int shift = 2;
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#ifdef CONFIG_MACH_OMAP_PALMTE
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return;
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#endif
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#ifdef CONFIG_ARCH_OMAP
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#ifdef CONFIG_OMAP_LL_DEBUG_UART3
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uart = (volatile u8 *)(OMAP_UART3_BASE);
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#elif defined(CONFIG_OMAP_LL_DEBUG_UART2)
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uart = (volatile u8 *)(OMAP_UART2_BASE);
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#elif defined(CONFIG_OMAP_LL_DEBUG_UART1)
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uart = (volatile u8 *)(OMAP_UART1_BASE);
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#elif defined(CONFIG_OMAP_LL_DEBUG_NONE)
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return;
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#else
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return;
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#endif
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#ifdef CONFIG_ARCH_OMAP1
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/* Determine which serial port to use */
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do {
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/* MMU is not on, so cpu_is_omapXXXX() won't work here */
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unsigned int omap_id = omap_get_id();
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if (omap_id == OMAP_ID_730 || omap_id == OMAP_ID_850)
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shift = 0;
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if (check_port(uart, shift))
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break;
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/* Silent boot if no serial ports are enabled. */
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return;
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} while (0);
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#endif /* CONFIG_ARCH_OMAP1 */
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#endif
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/*
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* Now, xmit each character
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*/
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while (!(uart[UART_LSR << shift] & UART_LSR_THRE))
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barrier();
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uart[UART_TX << shift] = c;
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}
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static inline void flush(void)
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{
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}
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/*
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* nothing to do
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*/
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#define arch_decomp_setup()
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#define arch_decomp_wdog()
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