/* * Serial port stubs for kernel decompress status messages * * Initially based on: * arch/arm/plat-omap/include/mach/uncompress.h * * Original copyrights follow. * * 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 <asm/mach-types.h> #include <mach/serial.h> #define IOMEM(x) ((void __force __iomem *)(x)) u32 *uart; /* PORT_16C550A, in polled non-fifo mode */ static inline void putc(char c) { if (!uart) return; while (!(uart[UART_LSR] & UART_LSR_THRE)) barrier(); uart[UART_TX] = c; } static inline void flush(void) { if (!uart) return; while (!(uart[UART_LSR] & UART_LSR_THRE)) barrier(); } static inline void set_uart_info(u32 phys) { uart = (u32 *)phys; } #define _DEBUG_LL_ENTRY(machine, phys) \ { \ if (machine_is_##machine()) { \ set_uart_info(phys); \ break; \ } \ } #define DEBUG_LL_DAVINCI(machine, port) \ _DEBUG_LL_ENTRY(machine, DAVINCI_UART##port##_BASE) #define DEBUG_LL_DA8XX(machine, port) \ _DEBUG_LL_ENTRY(machine, DA8XX_UART##port##_BASE) static inline void __arch_decomp_setup(unsigned long arch_id) { /* * Initialize the port based on the machine ID from the bootloader. * Note that we're using macros here instead of switch statement * as machine_is functions are optimized out for the boards that * are not selected. */ do { /* Davinci boards */ DEBUG_LL_DAVINCI(davinci_evm, 0); DEBUG_LL_DAVINCI(sffsdr, 0); DEBUG_LL_DAVINCI(neuros_osd2, 0); DEBUG_LL_DAVINCI(davinci_dm355_evm, 0); DEBUG_LL_DAVINCI(dm355_leopard, 0); DEBUG_LL_DAVINCI(davinci_dm6467_evm, 0); DEBUG_LL_DAVINCI(davinci_dm365_evm, 0); /* DA8xx boards */ DEBUG_LL_DA8XX(davinci_da830_evm, 2); DEBUG_LL_DA8XX(davinci_da850_evm, 2); DEBUG_LL_DA8XX(mityomapl138, 1); DEBUG_LL_DA8XX(omapl138_hawkboard, 2); } while (0); } #define arch_decomp_setup() __arch_decomp_setup(arch_id) |