2 * Serial port stubs for kernel decompress status messages
5 * arch/arm/plat-omap/include/mach/uncompress.h
7 * Original copyrights follow.
9 * Copyright (C) 2000 RidgeRun, Inc.
10 * Author: Greg Lonnon <glonnon@ridgerun.com>
13 * Author: <source@mvista.com>
14 * 2004 (c) MontaVista Software, Inc.
16 * This file is licensed under the terms of the GNU General Public License
17 * version 2. This program is licensed "as is" without any warranty of any
18 * kind, whether express or implied.
21 #include <linux/types.h>
22 #include <linux/serial_reg.h>
24 #include <asm/mach-types.h>
26 #include <mach/serial.h>
28 #define IOMEM(x) ((void __force __iomem *)(x))
32 /* PORT_16C550A, in polled non-fifo mode */
33 static void putc(char c)
35 while (!(uart[UART_LSR] & UART_LSR_THRE))
40 static inline void flush(void)
42 while (!(uart[UART_LSR] & UART_LSR_THRE))
46 static inline void set_uart_info(u32 phys, void * __iomem virt)
49 * Get address of some.bss variable and round it down
50 * a la CONFIG_AUTO_ZRELADDR.
52 u32 ram_start = (u32)&uart & 0xf8000000;
53 u32 *uart_info = (u32 *)(ram_start + DAVINCI_UART_INFO_OFS);
57 uart_info[1] = (u32)virt;
60 #define _DEBUG_LL_ENTRY(machine, phys, virt) \
61 if (machine_is_##machine()) { \
62 set_uart_info(phys, virt); \
66 #define DEBUG_LL_DAVINCI(machine, port) \
67 _DEBUG_LL_ENTRY(machine, DAVINCI_UART##port##_BASE, \
68 IO_ADDRESS(DAVINCI_UART##port##_BASE))
70 #define DEBUG_LL_DA8XX(machine, port) \
71 _DEBUG_LL_ENTRY(machine, DA8XX_UART##port##_BASE, \
72 IO_ADDRESS(DA8XX_UART##port##_BASE))
74 #define DEBUG_LL_TNETV107X(machine, port) \
75 _DEBUG_LL_ENTRY(machine, TNETV107X_UART##port##_BASE, \
76 TNETV107X_UART##port##_VIRT)
78 static inline void __arch_decomp_setup(unsigned long arch_id)
81 * Initialize the port based on the machine ID from the bootloader.
82 * Note that we're using macros here instead of switch statement
83 * as machine_is functions are optimized out for the boards that
88 DEBUG_LL_DAVINCI(davinci_evm, 0);
89 DEBUG_LL_DAVINCI(sffsdr, 0);
90 DEBUG_LL_DAVINCI(neuros_osd2, 0);
91 DEBUG_LL_DAVINCI(davinci_dm355_evm, 0);
92 DEBUG_LL_DAVINCI(dm355_leopard, 0);
93 DEBUG_LL_DAVINCI(davinci_dm6467_evm, 0);
94 DEBUG_LL_DAVINCI(davinci_dm365_evm, 0);
97 DEBUG_LL_DA8XX(davinci_da830_evm, 2);
98 DEBUG_LL_DA8XX(davinci_da850_evm, 2);
99 DEBUG_LL_DA8XX(mityomapl138, 1);
100 DEBUG_LL_DA8XX(omapl138_hawkboard, 2);
102 /* TNETV107x boards */
103 DEBUG_LL_TNETV107X(tnetv107x, 1);
107 #define arch_decomp_setup() __arch_decomp_setup(arch_id)
108 #define arch_decomp_wdog()