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97 lines
2.2 KiB
97 lines
2.2 KiB
/* |
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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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* arch/arm/plat-omap/include/mach/uncompress.h |
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* |
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* Original copyrights follow. |
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* |
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* Copyright (C) 2000 RidgeRun, Inc. |
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* Author: Greg Lonnon <[email protected]> |
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* |
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* Rewritten by: |
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* Author: <[email protected]> |
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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 <asm/mach-types.h> |
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#include <mach/serial.h> |
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#define IOMEM(x) ((void __force __iomem *)(x)) |
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u32 *uart; |
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/* PORT_16C550A, in polled non-fifo mode */ |
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static inline void putc(char c) |
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{ |
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if (!uart) |
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return; |
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while (!(uart[UART_LSR] & UART_LSR_THRE)) |
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barrier(); |
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uart[UART_TX] = c; |
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} |
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static inline void flush(void) |
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{ |
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if (!uart) |
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return; |
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while (!(uart[UART_LSR] & UART_LSR_THRE)) |
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barrier(); |
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} |
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static inline void set_uart_info(u32 phys) |
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{ |
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uart = (u32 *)phys; |
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} |
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#define _DEBUG_LL_ENTRY(machine, phys) \ |
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{ \ |
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if (machine_is_##machine()) { \ |
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set_uart_info(phys); \ |
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break; \ |
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} \ |
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} |
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#define DEBUG_LL_DAVINCI(machine, port) \ |
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_DEBUG_LL_ENTRY(machine, DAVINCI_UART##port##_BASE) |
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#define DEBUG_LL_DA8XX(machine, port) \ |
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_DEBUG_LL_ENTRY(machine, DA8XX_UART##port##_BASE) |
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static inline void __arch_decomp_setup(unsigned long arch_id) |
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{ |
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/* |
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* Initialize the port based on the machine ID from the bootloader. |
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* Note that we're using macros here instead of switch statement |
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* as machine_is functions are optimized out for the boards that |
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* are not selected. |
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*/ |
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do { |
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/* Davinci boards */ |
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DEBUG_LL_DAVINCI(davinci_evm, 0); |
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DEBUG_LL_DAVINCI(sffsdr, 0); |
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DEBUG_LL_DAVINCI(neuros_osd2, 0); |
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DEBUG_LL_DAVINCI(davinci_dm355_evm, 0); |
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DEBUG_LL_DAVINCI(dm355_leopard, 0); |
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DEBUG_LL_DAVINCI(davinci_dm6467_evm, 0); |
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DEBUG_LL_DAVINCI(davinci_dm365_evm, 0); |
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/* DA8xx boards */ |
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DEBUG_LL_DA8XX(davinci_da830_evm, 2); |
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DEBUG_LL_DA8XX(davinci_da850_evm, 2); |
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DEBUG_LL_DA8XX(mityomapl138, 1); |
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DEBUG_LL_DA8XX(omapl138_hawkboard, 2); |
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} while (0); |
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} |
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#define arch_decomp_setup() __arch_decomp_setup(arch_id)
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