uncompress.h
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上传日期:2009-04-28
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- /*
- * linux/include/asm-arm/arch-omap/uncompress.h
- *
- * Serial port stubs for kernel decompress status messages
- *
- * Initially based on:
- * linux-2.4.15-rmk1-dsplinux1.6/include/asm-arm/arch-omap1510/uncompress.h
- * Copyright (C) 2000 RidgeRun, Inc.
- * Author: Greg Lonnon <glonnon@ridgerun.com>
- *
- * Rewritten by:
- * Author: <source@mvista.com>
- * 2004 (c) MontaVista Software, Inc.
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2. This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
- */
- #include <linux/config.h>
- #include <linux/types.h>
- #include <linux/serial_reg.h>
- #include <asm/arch/serial.h>
- unsigned int system_rev;
- #define UART_OMAP_MDR1 0x08 /* mode definition register */
- #define OMAP_ID_730 0x355F
- #define ID_MASK 0x7fff
- #define check_port(base, shift) ((base[UART_OMAP_MDR1 << shift] & 7) == 0)
- #define omap_get_id() ((*(volatile unsigned int *)(0xfffed404)) >> 12) & ID_MASK
- static void
- putstr(const char *s)
- {
- volatile u8 * uart = 0;
- int shift = 2;
- #ifdef CONFIG_ARCH_OMAP
- #ifdef CONFIG_OMAP_LL_DEBUG_UART3
- uart = (volatile u8 *)(OMAP_UART3_BASE);
- #elif CONFIG_OMAP_LL_DEBUG_UART2
- uart = (volatile u8 *)(OMAP_UART2_BASE);
- #else
- uart = (volatile u8 *)(OMAP_UART1_BASE);
- #endif
- #ifdef CONFIG_ARCH_OMAP1
- /* Determine which serial port to use */
- do {
- /* MMU is not on, so cpu_is_omapXXXX() won't work here */
- unsigned int omap_id = omap_get_id();
- if (omap_id == OMAP_ID_730)
- shift = 0;
- if (check_port(uart, shift))
- break;
- /* Silent boot if no serial ports are enabled. */
- return;
- } while (0);
- #endif /* CONFIG_ARCH_OMAP1 */
- #endif
- /*
- * Now, xmit each character
- */
- while (*s) {
- while (!(uart[UART_LSR << shift] & UART_LSR_THRE))
- barrier();
- uart[UART_TX << shift] = *s;
- if (*s++ == 'n') {
- while (!(uart[UART_LSR << shift] & UART_LSR_THRE))
- barrier();
- uart[UART_TX << shift] = 'r';
- }
- }
- }
- /*
- * nothing to do
- */
- #define arch_decomp_setup()
- #define arch_decomp_wdog()