[linux-2.6-block.git] / arch / arm / mach-davinci / include / mach / uncompress.h

/*
 * 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>

u32 *uart;

/* PORT_16C550A, in polled non-fifo mode */
static void putc(char c)
{
	while (!(uart[UART_LSR] & UART_LSR_THRE))
		barrier();
	uart[UART_TX] = c;
}

static inline void flush(void)
{
	while (!(uart[UART_LSR] & UART_LSR_THRE))
		barrier();
}

static inline void set_uart_info(u32 phys, void * __iomem virt)
{
	/*
	 * Get address of some.bss variable and round it down
	 * a la CONFIG_AUTO_ZRELADDR.
	 */
	u32 ram_start = (u32)&uart & 0xf8000000;
	u32 *uart_info = (u32 *)(ram_start + DAVINCI_UART_INFO_OFS);

	uart = (u32 *)phys;
	uart_info[0] = phys;
	uart_info[1] = (u32)virt;
}

#define _DEBUG_LL_ENTRY(machine, phys, virt)			\
	if (machine_is_##machine()) {				\
		set_uart_info(phys, virt);			\
		break;						\
	}

#define DEBUG_LL_DAVINCI(machine, port)				\
	_DEBUG_LL_ENTRY(machine, DAVINCI_UART##port##_BASE,	\
			IO_ADDRESS(DAVINCI_UART##port##_BASE))

#define DEBUG_LL_DA8XX(machine, port)				\
	_DEBUG_LL_ENTRY(machine, DA8XX_UART##port##_BASE,	\
			IO_ADDRESS(DA8XX_UART##port##_BASE))

#define DEBUG_LL_TNETV107X(machine, port)			\
	_DEBUG_LL_ENTRY(machine, TNETV107X_UART##port##_BASE,	\
			TNETV107X_UART##port##_VIRT)

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);

		/* TNETV107x boards */
		DEBUG_LL_TNETV107X(tnetv107x,		1);
	} while (0);
}

#define arch_decomp_setup()	__arch_decomp_setup(arch_id)
#define arch_decomp_wdog()
Commit	Line	Data
7c6337e2 KH	1	/*
	2	* Serial port stubs for kernel decompress status messages
	3	*
dc2eb76c CC	4	* Initially based on:
	5	* arch/arm/plat-omap/include/mach/uncompress.h
	6	*
	7	* Original copyrights follow.
	8	*
	9	* Copyright (C) 2000 RidgeRun, Inc.
	10	* Author: Greg Lonnon <glonnon@ridgerun.com>
	11	*
	12	* Rewritten by:
	13	* Author: <source@mvista.com>
	14	* 2004 (c) MontaVista Software, Inc.
7c6337e2 KH	15	*
	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.
	19	*/
	20
	21	#include <linux/types.h>
	22	#include <linux/serial_reg.h>
7c6337e2	23
27428e39 MG	24	#include <asm/mach-types.h>
27428e39 MG	25
dc2eb76c	26	#include <mach/serial.h>
27428e39	27
8ea0de4b	28	u32 *uart;
27428e39	29
7c6337e2	30	/* PORT_16C550A, in polled non-fifo mode */
7c6337e2 KH	31	static void putc(char c)
7c6337e2 KH	32	{
7c6337e2 KH	33	while (!(uart[UART_LSR] & UART_LSR_THRE))
	34	barrier();
	35	uart[UART_TX] = c;
	36	}
	37
	38	static inline void flush(void)
	39	{
7c6337e2 KH	40	while (!(uart[UART_LSR] & UART_LSR_THRE))
	41	barrier();
	42	}
	43
dc2eb76c CC	44	static inline void set_uart_info(u32 phys, void * __iomem virt)
dc2eb76c CC	45	{
e020fe34 NP	46	/*
	47	* Get address of some.bss variable and round it down
	48	* a la CONFIG_AUTO_ZRELADDR.
	49	*/
	50	u32 ram_start = (u32)&uart & 0xf8000000;
	51	u32 uart_info = (u32 )(ram_start + DAVINCI_UART_INFO_OFS);
8ea0de4b	52
dc2eb76c CC	53	uart = (u32 *)phys;
	54	uart_info[0] = phys;
	55	uart_info[1] = (u32)virt;
	56	}
	57
	58	#define _DEBUG_LL_ENTRY(machine, phys, virt) \
	59	if (machine_is_##machine()) { \
	60	set_uart_info(phys, virt); \
	61	break; \
	62	}
	63
	64	#define DEBUG_LL_DAVINCI(machine, port) \
	65	_DEBUG_LL_ENTRY(machine, DAVINCI_UART##port##_BASE, \
	66	IO_ADDRESS(DAVINCI_UART##port##_BASE))
	67
	68	#define DEBUG_LL_DA8XX(machine, port) \
	69	_DEBUG_LL_ENTRY(machine, DA8XX_UART##port##_BASE, \
	70	IO_ADDRESS(DA8XX_UART##port##_BASE))
	71
38db050e CC	72	#define DEBUG_LL_TNETV107X(machine, port) \
	73	_DEBUG_LL_ENTRY(machine, TNETV107X_UART##port##_BASE, \
	74	TNETV107X_UART##port##_VIRT)
	75
dc2eb76c CC	76	static inline void __arch_decomp_setup(unsigned long arch_id)
	77	{
	78	/*
	79	* Initialize the port based on the machine ID from the bootloader.
	80	* Note that we're using macros here instead of switch statement
	81	* as machine_is functions are optimized out for the boards that
	82	* are not selected.
	83	*/
	84	do {
	85	/* Davinci boards */
	86	DEBUG_LL_DAVINCI(davinci_evm, 0);
	87	DEBUG_LL_DAVINCI(sffsdr, 0);
	88	DEBUG_LL_DAVINCI(neuros_osd2, 0);
	89	DEBUG_LL_DAVINCI(davinci_dm355_evm, 0);
	90	DEBUG_LL_DAVINCI(dm355_leopard, 0);
	91	DEBUG_LL_DAVINCI(davinci_dm6467_evm, 0);
	92	DEBUG_LL_DAVINCI(davinci_dm365_evm, 0);
	93
	94	/* DA8xx boards */
	95	DEBUG_LL_DA8XX(davinci_da830_evm, 2);
	96	DEBUG_LL_DA8XX(davinci_da850_evm, 2);
f2dbb6d9	97	DEBUG_LL_DA8XX(mityomapl138, 1);
6c18c91b	98	DEBUG_LL_DA8XX(omapl138_hawkboard, 2);
38db050e CC	99
	100	/* TNETV107x boards */
	101	DEBUG_LL_TNETV107X(tnetv107x, 1);
dc2eb76c CC	102	} while (0);
	103	}
	104
	105	#define arch_decomp_setup() __arch_decomp_setup(arch_id)
7c6337e2	106	#define arch_decomp_wdog()