| /* |
| * arch/arm/plat-omap/include/mach/uncompress.h |
| * |
| * Serial port stubs for kernel decompress status messages |
| * |
| * Initially based on: |
| * linux-2.4.15-rmk1-dsplinux1.6/arch/arm/plat-omap/include/mach1510/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/types.h> |
| #include <linux/serial_reg.h> |
| #include <plat/serial.h> |
| |
| unsigned int system_rev; |
| |
| #define UART_OMAP_MDR1 0x08 /* mode definition register */ |
| #define OMAP_ID_730 0x355F |
| #define OMAP_ID_850 0x362C |
| #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 putc(int c) |
| { |
| volatile u8 * uart = 0; |
| int shift = 2; |
| |
| #ifdef CONFIG_MACH_OMAP_PALMTE |
| return; |
| #endif |
| |
| #ifdef CONFIG_ARCH_OMAP |
| #ifdef CONFIG_OMAP_LL_DEBUG_UART3 |
| uart = (volatile u8 *)(OMAP_UART3_BASE); |
| #elif defined(CONFIG_OMAP_LL_DEBUG_UART2) |
| uart = (volatile u8 *)(OMAP_UART2_BASE); |
| #elif defined(CONFIG_OMAP_LL_DEBUG_UART1) |
| uart = (volatile u8 *)(OMAP_UART1_BASE); |
| #elif defined(CONFIG_OMAP_LL_DEBUG_NONE) |
| return; |
| #else |
| return; |
| #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 || omap_id == OMAP_ID_850) |
| 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 (!(uart[UART_LSR << shift] & UART_LSR_THRE)) |
| barrier(); |
| uart[UART_TX << shift] = c; |
| } |
| |
| static inline void flush(void) |
| { |
| } |
| |
| /* |
| * nothing to do |
| */ |
| #define arch_decomp_setup() |
| #define arch_decomp_wdog() |