board/bc3450/bc3450.c - github/trini/u-boot - Gitiles

 /*
  * (C) Copyright 2003-2004
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  *
  * (C) Copyright 2004
  * Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
  *
  * (C) Copyright 2004-2005
  * Martin Krause, TQ-Systems GmbH, martin.krause@tqs.de
  *
  * (C) Copyright 2006
  * Stefan Strobl, GERSYS GmbH, stefan.strobl@gersys.de
  *
  * See file CREDITS for list of people who contributed to this
  * project.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
  * published by the Free Software Foundation; either version 2 of
  * the License, or (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  * MA 02111-1307 USA
  */

 #include <common.h>
 #include <mpc5xxx.h>
 #include <pci.h>
 #include <netdev.h>

 #ifdef CONFIG_VIDEO_SM501
 #include <sm501.h>
 #endif

 #if defined(CONFIG_MPC5200_DDR)
 #include "mt46v16m16-75.h"
 #else
 #include "mt48lc16m16a2-75.h"
 #endif

 #ifdef CONFIG_RTC_MPC5200
 #include <rtc.h>
 #endif

 #ifdef CONFIG_PS2MULT
 void ps2mult_early_init(void);
 #endif

 #ifndef CONFIG_SYS_RAMBOOT
 static void sdram_start (int hi_addr)
 {
 	long hi_addr_bit = hi_addr ? 0x01000000 : 0;

 	/* unlock mode register */
 	*(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000000 |
 		hi_addr_bit;
 	__asm__ volatile ("sync");

 	/* precharge all banks */
 	*(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000002 |
 		hi_addr_bit;
 	__asm__ volatile ("sync");

 #if SDRAM_DDR
 	/* set mode register: extended mode */
 	*(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_EMODE;
 	__asm__ volatile ("sync");

 	/* set mode register: reset DLL */
 	*(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_MODE | 0x04000000;
 	__asm__ volatile ("sync");
 #endif

 	/* precharge all banks */
 	*(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000002 |
 		hi_addr_bit;
 	__asm__ volatile ("sync");

 	/* auto refresh */
 	*(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000004 |
 		hi_addr_bit;
 	__asm__ volatile ("sync");

 	/* set mode register */
 	*(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_MODE;
 	__asm__ volatile ("sync");

 	/* normal operation */
 	*(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | hi_addr_bit;
 	__asm__ volatile ("sync");
 }
 #endif

 /*
  * ATTENTION: Although partially referenced initdram does NOT make real use
  *	      use of CONFIG_SYS_SDRAM_BASE. The code does not work if CONFIG_SYS_SDRAM_BASE
  *	      is something else than 0x00000000.
  */

 phys_size_t initdram (int board_type)
 {
 	ulong dramsize = 0;
 	ulong dramsize2 = 0;
 #ifndef CONFIG_SYS_RAMBOOT
 	ulong test1, test2;

 	/* setup SDRAM chip selects */
 	*(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0x0000001c; /* 512MB at 0x0 */
 	*(vu_long *)MPC5XXX_SDRAM_CS1CFG = 0x40000000; /* disabled */
 	__asm__ volatile ("sync");

 	/* setup config registers */
 	*(vu_long *)MPC5XXX_SDRAM_CONFIG1 = SDRAM_CONFIG1;
 	*(vu_long *)MPC5XXX_SDRAM_CONFIG2 = SDRAM_CONFIG2;
 	__asm__ volatile ("sync");

 #if SDRAM_DDR
 	/* set tap delay */
 	*(vu_long *)MPC5XXX_CDM_PORCFG = SDRAM_TAPDELAY;
 	__asm__ volatile ("sync");
 #endif

 	/* find RAM size using SDRAM CS0 only */
 	sdram_start(0);
 	test1 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x20000000);
 	sdram_start(1);
 	test2 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x20000000);
 	if (test1 > test2) {
 		sdram_start(0);
 		dramsize = test1;
 	} else {
 		dramsize = test2;
 	}

 	/* memory smaller than 1MB is impossible */
 	if (dramsize < (1 << 20)) {
 		dramsize = 0;
 	}

 	/* set SDRAM CS0 size according to the amount of RAM found */
 	if (dramsize > 0) {
 		*(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0x13 +
 			__builtin_ffs(dramsize >> 20) - 1;
 	} else {
 		*(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0; /* disabled */
 	}

 	/* let SDRAM CS1 start right after CS0 */
 	*(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize + 0x0000001c; /* 512MB */

 	/* find RAM size using SDRAM CS1 only */
 	sdram_start(0);
 	test1 = get_ram_size((long *)(CONFIG_SYS_SDRAM_BASE + dramsize), 0x20000000);
 	sdram_start(1);
 	test2 = get_ram_size((long *)(CONFIG_SYS_SDRAM_BASE + dramsize), 0x20000000);
 	if (test1 > test2) {
 		sdram_start(0);
 		dramsize2 = test1;
 	} else {
 		dramsize2 = test2;
 	}

 	/* memory smaller than 1MB is impossible */
 	if (dramsize2 < (1 << 20)) {
 		dramsize2 = 0;
 	}

 	/* set SDRAM CS1 size according to the amount of RAM found */
 	if (dramsize2 > 0) {
 		*(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize
 			| (0x13 + __builtin_ffs(dramsize2 >> 20) - 1);
 	} else {
 		*(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize; /* disabled */
 	}

 #else /* CONFIG_SYS_RAMBOOT */

 	/* retrieve size of memory connected to SDRAM CS0 */
 	dramsize = *(vu_long *)MPC5XXX_SDRAM_CS0CFG & 0xFF;
 	if (dramsize >= 0x13) {
 		dramsize = (1 << (dramsize - 0x13)) << 20;
 	} else {
 		dramsize = 0;
 	}

 	/* retrieve size of memory connected to SDRAM CS1 */
 	dramsize2 = *(vu_long *)MPC5XXX_SDRAM_CS1CFG & 0xFF;
 	if (dramsize2 >= 0x13) {
 		dramsize2 = (1 << (dramsize2 - 0x13)) << 20;
 	} else {
 		dramsize2 = 0;
 	}

 #endif /* CONFIG_SYS_RAMBOOT */

 	return dramsize;
 }

 int checkboard (void)
 {
 #if defined (CONFIG_TQM5200)
 	puts ("Board: TQM5200 (TQ-Components GmbH)\n");
 #endif

 #if defined (CONFIG_BC3450)
 	puts ("Dev:   GERSYS BC3450\n");
 #endif

 	return 0;
 }

 void flash_preinit(void)
 {
 	/*
 	 * Now, when we are in RAM, enable flash write
 	 * access for detection process.
 	 * Note that CS_BOOT cannot be cleared when
 	 * executing in flash.
 	 */
 	*(vu_long *)MPC5XXX_BOOTCS_CFG &= ~0x1;		/* clear RO	   */
 }


 #ifdef	CONFIG_PCI
 static struct pci_controller hose;

 extern void pci_mpc5xxx_init(struct pci_controller *);

 void pci_init_board(void)
 {
 	pci_mpc5xxx_init(&hose);
 }
 #endif

 #if defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_RESET)

 void init_ide_reset (void)
 {
 	debug ("init_ide_reset\n");

 	/* Configure PSC1_4 as GPIO output for ATA reset */
 	*(vu_long *) MPC5XXX_WU_GPIO_ENABLE |= GPIO_PSC1_4;
 	*(vu_long *) MPC5XXX_WU_GPIO_DIR    |= GPIO_PSC1_4;
 }

 void ide_set_reset (int idereset)
 {
 	debug ("ide_reset(%d)\n", idereset);

 	if (idereset) {
 		*(vu_long *) MPC5XXX_WU_GPIO_DATA_O &= ~GPIO_PSC1_4;
 	} else {
 		*(vu_long *) MPC5XXX_WU_GPIO_DATA_O |=  GPIO_PSC1_4;
 	}
 }
 #endif

 #ifdef CONFIG_POST
 /*
  * Reads GPIO pin PSC6_3. A keypress is reported, if PSC6_3 is low. If PSC6_3
  * is left open, no keypress is detected.
  */
 int post_hotkeys_pressed(void)
 {
 	struct mpc5xxx_gpio *gpio;

 	gpio = (struct mpc5xxx_gpio*) MPC5XXX_GPIO;

 	/*
 	 * Configure PSC6_1 and PSC6_3 as GPIO. PSC6 then couldn't be used in
 	 * CODEC or UART mode. Consumer IrDA should still be possible.
 	 */
 	gpio->port_config &= ~(0x07000000);
 	gpio->port_config |=   0x03000000;

 	/* Enable GPIO for GPIO_IRDA_1 (IR_USB_CLK pin) = PSC6_3 */
 	gpio->simple_gpioe |= 0x20000000;

 	/* Configure GPIO_IRDA_1 as input */
 	gpio->simple_ddr &= ~(0x20000000);

 	return ((gpio->simple_ival & 0x20000000) ? 0 : 1);
 }
 #endif

 #ifdef CONFIG_BOARD_EARLY_INIT_R
 int board_early_init_r (void)
 {
 #ifdef CONFIG_RTC_MPC5200
 	struct rtc_time t;

 	/* set to Wed Dec 31 19:00:00 1969 */
 	t.tm_sec = t.tm_min = 0;
 	t.tm_hour = 19;
 	t.tm_mday = 31;
 	t.tm_mon = 12;
 	t.tm_year = 1969;
 	t.tm_wday = 3;

 	rtc_set(&t);
 #endif /* CONFIG_RTC_MPC5200 */

 #ifdef CONFIG_PS2MULT
 	ps2mult_early_init();
 #endif /* CONFIG_PS2MULT */
 	return (0);
 }
 #endif /* CONFIG_BOARD_EARLY_INIT_R */


 int last_stage_init (void)
 {
 	/*
 	 * auto scan for really existing devices and re-set chip select
 	 * configuration.
 	 */
 	u16 save, tmp;
 	int restore;

 	/*
 	 * Check for SRAM and SRAM size
 	 */

 	/* save original SRAM content  */
 	save = *(volatile u16 *)CONFIG_SYS_CS2_START;
 	restore = 1;

 	/* write test pattern to SRAM */
 	*(volatile u16 *)CONFIG_SYS_CS2_START = 0xA5A5;
 	__asm__ volatile ("sync");
 	/*
 	 * Put a different pattern on the data lines: otherwise they may float
 	 * long enough to read back what we wrote.
 	 */
 	tmp = *(volatile u16 *)CONFIG_SYS_FLASH_BASE;
 	if (tmp == 0xA5A5)
 		puts ("!! possible error in SRAM detection\n");

 	if (*(volatile u16 *)CONFIG_SYS_CS2_START != 0xA5A5) {
 		/* no SRAM at all, disable cs */
 		*(vu_long *)MPC5XXX_ADDECR &= ~(1 << 18);
 		*(vu_long *)MPC5XXX_CS2_START = 0x0000FFFF;
 		*(vu_long *)MPC5XXX_CS2_STOP = 0x0000FFFF;
 		restore = 0;
 		__asm__ volatile ("sync");
 	} else if (*(volatile u16 *)(CONFIG_SYS_CS2_START + (1<<19)) == 0xA5A5) {
 		/* make sure that we access a mirrored address */
 		*(volatile u16 *)CONFIG_SYS_CS2_START = 0x1111;
 		__asm__ volatile ("sync");
 		if (*(volatile u16 *)(CONFIG_SYS_CS2_START + (1<<19)) == 0x1111) {
 			/* SRAM size = 512 kByte */
 			*(vu_long *)MPC5XXX_CS2_STOP = STOP_REG(CONFIG_SYS_CS2_START,
 								0x80000);
 			__asm__ volatile ("sync");
 			puts ("SRAM:  512 kB\n");
 		}
 		else
 			puts ("!! possible error in SRAM detection\n");
 	} else {
 		puts ("SRAM:  1 MB\n");
 	}
 	/* restore origianl SRAM content  */
 	if (restore) {
 		*(volatile u16 *)CONFIG_SYS_CS2_START = save;
 		__asm__ volatile ("sync");
 	}

 	/*
 	 * Check for Grafic Controller
 	 */

 	/* save origianl FB content  */
 	save = *(volatile u16 *)CONFIG_SYS_CS1_START;
 	restore = 1;

 	/* write test pattern to FB memory */
 	*(volatile u16 *)CONFIG_SYS_CS1_START = 0xA5A5;
 	__asm__ volatile ("sync");
 	/*
 	 * Put a different pattern on the data lines: otherwise they may float
 	 * long enough to read back what we wrote.
 	 */
 	tmp = *(volatile u16 *)CONFIG_SYS_FLASH_BASE;
 	if (tmp == 0xA5A5)
 		puts ("!! possible error in grafic controller detection\n");

 	if (*(volatile u16 *)CONFIG_SYS_CS1_START != 0xA5A5) {
 		/* no grafic controller at all, disable cs */
 		*(vu_long *)MPC5XXX_ADDECR &= ~(1 << 17);
 		*(vu_long *)MPC5XXX_CS1_START = 0x0000FFFF;
 		*(vu_long *)MPC5XXX_CS1_STOP = 0x0000FFFF;
 		restore = 0;
 		__asm__ volatile ("sync");
 	} else {
 		puts ("VGA:   SMI501 (Voyager) with 8 MB\n");
 	}
 	/* restore origianl FB content	*/
 	if (restore) {
 		*(volatile u16 *)CONFIG_SYS_CS1_START = save;
 		__asm__ volatile ("sync");
 	}

 	return 0;
 }

 #ifdef CONFIG_VIDEO_SM501

 #define DISPLAY_WIDTH	640
 #define DISPLAY_HEIGHT	480

 #ifdef CONFIG_VIDEO_SM501_8BPP
 #error CONFIG_VIDEO_SM501_8BPP not supported.
 #endif /* CONFIG_VIDEO_SM501_8BPP */

 #ifdef CONFIG_VIDEO_SM501_16BPP
 #error CONFIG_VIDEO_SM501_16BPP not supported.
 #endif /* CONFIG_VIDEO_SM501_16BPP */

 #ifdef CONFIG_VIDEO_SM501_32BPP
 static const SMI_REGS init_regs [] =
 {
 #if defined (CONFIG_BC3450_FP) && !defined (CONFIG_BC3450_CRT)
 	/* FP only */
 	{0x00004, 0x0},
 	{0x00048, 0x00021807},
 	{0x0004C, 0x091a0a01},
 	{0x00054, 0x1},
 	{0x00040, 0x00021807},
 	{0x00044, 0x091a0a01},
 	{0x00054, 0x0},
 	{0x80000, 0x01013106},
 	{0x80004, 0xc428bb17},
 	{0x80000, 0x03013106},
 	{0x8000C, 0x00000000},
 	{0x80010, 0x0a000a00},
 	{0x80014, 0x02800000},
 	{0x80018, 0x01e00000},
 	{0x8001C, 0x00000000},
 	{0x80020, 0x01e00280},
 	{0x80024, 0x02fa027f},
 	{0x80028, 0x004a028b},
 	{0x8002C, 0x020c01df},
 	{0x80030, 0x000201e9},
 	{0x80200, 0x00010200},
 	{0x80000, 0x0f013106},
 #elif defined (CONFIG_BC3450_CRT) && !defined (CONFIG_BC3450_FP)
 	/* CRT only */
 	{0x00004, 0x0},
 	{0x00048, 0x00021807},
 	{0x0004C, 0x10090a01},
 	{0x00054, 0x1},
 	{0x00040, 0x00021807},
 	{0x00044, 0x10090a01},
 	{0x00054, 0x0},
 	{0x80200, 0x00010000},
 	{0x80204, 0x0},
 	{0x80208, 0x0A000A00},
 	{0x8020C, 0x02fa027f},
 	{0x80210, 0x004a028b},
 	{0x80214, 0x020c01df},
 	{0x80218, 0x000201e9},
 	{0x80200, 0x00013306},
 #else	/* panel + CRT */
 	{0x00004, 0x0},
 	{0x00048, 0x00021807},
 	{0x0004C, 0x091a0a01},
 	{0x00054, 0x1},
 	{0x00040, 0x00021807},
 	{0x00044, 0x091a0a01},
 	{0x00054, 0x0},
 	{0x80000, 0x0f013106},
 	{0x80004, 0xc428bb17},
 	{0x8000C, 0x00000000},
 	{0x80010, 0x0a000a00},
 	{0x80014, 0x02800000},
 	{0x80018, 0x01e00000},
 	{0x8001C, 0x00000000},
 	{0x80020, 0x01e00280},
 	{0x80024, 0x02fa027f},
 	{0x80028, 0x004a028b},
 	{0x8002C, 0x020c01df},
 	{0x80030, 0x000201e9},
 	{0x80200, 0x00010000},
 #endif
 	{0, 0}
 };
 #endif /* CONFIG_VIDEO_SM501_32BPP */

 #ifdef CONFIG_CONSOLE_EXTRA_INFO
 /*
  * Return text to be printed besides the logo.
  */
 void video_get_info_str (int line_number, char *info)
 {
 	if (line_number == 1) {
 #if defined (CONFIG_TQM5200)
 	    strcpy (info, " Board: TQM5200 (TQ-Components GmbH)");
 #else
 #error No supported board selected
 #endif /* CONFIG_TQM5200 */

 #if defined (CONFIG_BC3450)
 	} else if (line_number == 2) {
 	    strcpy (info, " Dev:   GERSYS BC3450");
 #endif /* CONFIG_BC3450 */
 	}
 	else {
 		info [0] = '\0';
 	}
 }
 #endif

 /*
  * Returns SM501 register base address. First thing called in the
  * driver. Checks if SM501 is physically present.
  */
 unsigned int board_video_init (void)
 {
 	u16 save, tmp;
 	int restore, ret;

 	/*
 	 * Check for Grafic Controller
 	 */

 	/* save origianl FB content  */
 	save = *(volatile u16 *)CONFIG_SYS_CS1_START;
 	restore = 1;

 	/* write test pattern to FB memory */
 	*(volatile u16 *)CONFIG_SYS_CS1_START = 0xA5A5;
 	__asm__ volatile ("sync");
 	/*
 	 * Put a different pattern on the data lines: otherwise they may float
 	 * long enough to read back what we wrote.
 	 */
 	tmp = *(volatile u16 *)CONFIG_SYS_FLASH_BASE;
 	if (tmp == 0xA5A5)
 		puts ("!! possible error in grafic controller detection\n");

 	if (*(volatile u16 *)CONFIG_SYS_CS1_START != 0xA5A5) {
 		/* no grafic controller found */
 		restore = 0;
 		ret = 0;
 	} else {
 	    ret = SM501_MMIO_BASE;
 	}

 	if (restore) {
 		*(volatile u16 *)CONFIG_SYS_CS1_START = save;
 		__asm__ volatile ("sync");
 	}
 	return ret;
 }

 /*
  * Returns SM501 framebuffer address
  */
 unsigned int board_video_get_fb (void)
 {
 	return SM501_FB_BASE;
 }

 /*
  * Called after initializing the SM501 and before clearing the screen.
  */
 void board_validate_screen (unsigned int base)
 {
 }

 /*
  * Return a pointer to the initialization sequence.
  */
 const SMI_REGS *board_get_regs (void)
 {
 	return init_regs;
 }

 int board_get_width (void)
 {
 	return DISPLAY_WIDTH;
 }

 int board_get_height (void)
 {
 	return DISPLAY_HEIGHT;
 }

 #endif /* CONFIG_VIDEO_SM501 */

 int board_eth_init(bd_t *bis)
 {
 	cpu_eth_init(bis); /* Built in FEC comes first */
 	return pci_eth_init(bis);
 }
	/*
	* (C) Copyright 2003-2004
	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	*
	* (C) Copyright 2004
	* Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
	*
	* (C) Copyright 2004-2005
	* Martin Krause, TQ-Systems GmbH, martin.krause@tqs.de
	*
	* (C) Copyright 2006
	* Stefan Strobl, GERSYS GmbH, stefan.strobl@gersys.de
	*
	* See file CREDITS for list of people who contributed to this
	* project.
	*
	* This program is free software; you can redistribute it and/or
	* modify it under the terms of the GNU General Public License as
	* published by the Free Software Foundation; either version 2 of
	* the License, or (at your option) any later version.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	* MA 02111-1307 USA
	*/

	#include <common.h>
	#include <mpc5xxx.h>
	#include <pci.h>
	#include <netdev.h>

	#ifdef CONFIG_VIDEO_SM501
	#include <sm501.h>
	#endif

	#if defined(CONFIG_MPC5200_DDR)
	#include "mt46v16m16-75.h"
	#else
	#include "mt48lc16m16a2-75.h"
	#endif

	#ifdef CONFIG_RTC_MPC5200
	#include <rtc.h>
	#endif

	#ifdef CONFIG_PS2MULT
	void ps2mult_early_init(void);
	#endif

	#ifndef CONFIG_SYS_RAMBOOT
	static void sdram_start (int hi_addr)
	{
	long hi_addr_bit = hi_addr ? 0x01000000 : 0;

	/* unlock mode register */
	(vu_long )MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL \| 0x80000000 \|
	hi_addr_bit;
	__asm__ volatile ("sync");

	/* precharge all banks */
	(vu_long )MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL \| 0x80000002 \|
	hi_addr_bit;
	__asm__ volatile ("sync");

	#if SDRAM_DDR
	/* set mode register: extended mode */
	(vu_long )MPC5XXX_SDRAM_MODE = SDRAM_EMODE;
	__asm__ volatile ("sync");

	/* set mode register: reset DLL */
	(vu_long )MPC5XXX_SDRAM_MODE = SDRAM_MODE \| 0x04000000;
	__asm__ volatile ("sync");
	#endif

	/* precharge all banks */
	(vu_long )MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL \| 0x80000002 \|
	hi_addr_bit;
	__asm__ volatile ("sync");

	/* auto refresh */
	(vu_long )MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL \| 0x80000004 \|
	hi_addr_bit;
	__asm__ volatile ("sync");

	/* set mode register */
	(vu_long )MPC5XXX_SDRAM_MODE = SDRAM_MODE;
	__asm__ volatile ("sync");

	/* normal operation */
	(vu_long )MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL \| hi_addr_bit;
	__asm__ volatile ("sync");
	}
	#endif

	/*
	* ATTENTION: Although partially referenced initdram does NOT make real use
	* use of CONFIG_SYS_SDRAM_BASE. The code does not work if CONFIG_SYS_SDRAM_BASE
	* is something else than 0x00000000.
	*/

	phys_size_t initdram (int board_type)
	{
	ulong dramsize = 0;
	ulong dramsize2 = 0;
	#ifndef CONFIG_SYS_RAMBOOT
	ulong test1, test2;

	/* setup SDRAM chip selects */
	(vu_long )MPC5XXX_SDRAM_CS0CFG = 0x0000001c; /* 512MB at 0x0 */
	(vu_long )MPC5XXX_SDRAM_CS1CFG = 0x40000000; /* disabled */
	__asm__ volatile ("sync");

	/* setup config registers */
	(vu_long )MPC5XXX_SDRAM_CONFIG1 = SDRAM_CONFIG1;
	(vu_long )MPC5XXX_SDRAM_CONFIG2 = SDRAM_CONFIG2;
	__asm__ volatile ("sync");

	#if SDRAM_DDR
	/* set tap delay */
	(vu_long )MPC5XXX_CDM_PORCFG = SDRAM_TAPDELAY;
	__asm__ volatile ("sync");
	#endif

	/* find RAM size using SDRAM CS0 only */
	sdram_start(0);
	test1 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x20000000);
	sdram_start(1);
	test2 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x20000000);
	if (test1 > test2) {
	sdram_start(0);
	dramsize = test1;
	} else {
	dramsize = test2;
	}

	/* memory smaller than 1MB is impossible */
	if (dramsize < (1 << 20)) {
	dramsize = 0;
	}

	/* set SDRAM CS0 size according to the amount of RAM found */
	if (dramsize > 0) {
	(vu_long )MPC5XXX_SDRAM_CS0CFG = 0x13 +
	__builtin_ffs(dramsize >> 20) - 1;
	} else {
	(vu_long )MPC5XXX_SDRAM_CS0CFG = 0; /* disabled */
	}

	/* let SDRAM CS1 start right after CS0 */
	(vu_long )MPC5XXX_SDRAM_CS1CFG = dramsize + 0x0000001c; /* 512MB */

	/* find RAM size using SDRAM CS1 only */
	sdram_start(0);
	test1 = get_ram_size((long *)(CONFIG_SYS_SDRAM_BASE + dramsize), 0x20000000);
	sdram_start(1);
	test2 = get_ram_size((long *)(CONFIG_SYS_SDRAM_BASE + dramsize), 0x20000000);
	if (test1 > test2) {
	sdram_start(0);
	dramsize2 = test1;
	} else {
	dramsize2 = test2;
	}

	/* memory smaller than 1MB is impossible */
	if (dramsize2 < (1 << 20)) {
	dramsize2 = 0;
	}

	/* set SDRAM CS1 size according to the amount of RAM found */
	if (dramsize2 > 0) {
	(vu_long )MPC5XXX_SDRAM_CS1CFG = dramsize
	\| (0x13 + __builtin_ffs(dramsize2 >> 20) - 1);
	} else {
	(vu_long )MPC5XXX_SDRAM_CS1CFG = dramsize; /* disabled */
	}

	#else /* CONFIG_SYS_RAMBOOT */

	/* retrieve size of memory connected to SDRAM CS0 */
	dramsize = (vu_long )MPC5XXX_SDRAM_CS0CFG & 0xFF;
	if (dramsize >= 0x13) {
	dramsize = (1 << (dramsize - 0x13)) << 20;
	} else {
	dramsize = 0;
	}

	/* retrieve size of memory connected to SDRAM CS1 */
	dramsize2 = (vu_long )MPC5XXX_SDRAM_CS1CFG & 0xFF;
	if (dramsize2 >= 0x13) {
	dramsize2 = (1 << (dramsize2 - 0x13)) << 20;
	} else {
	dramsize2 = 0;
	}

	#endif /* CONFIG_SYS_RAMBOOT */

	return dramsize;
	}

	int checkboard (void)
	{
	#if defined (CONFIG_TQM5200)
	puts ("Board: TQM5200 (TQ-Components GmbH)\n");
	#endif

	#if defined (CONFIG_BC3450)
	puts ("Dev: GERSYS BC3450\n");
	#endif

	return 0;
	}

	void flash_preinit(void)
	{
	/*
	* Now, when we are in RAM, enable flash write
	* access for detection process.
	* Note that CS_BOOT cannot be cleared when
	* executing in flash.
	*/
	(vu_long )MPC5XXX_BOOTCS_CFG &= ~0x1; /* clear RO */
	}


	#ifdef CONFIG_PCI
	static struct pci_controller hose;

	extern void pci_mpc5xxx_init(struct pci_controller *);

	void pci_init_board(void)
	{
	pci_mpc5xxx_init(&hose);
	}
	#endif

	#if defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_RESET)

	void init_ide_reset (void)
	{
	debug ("init_ide_reset\n");

	/* Configure PSC1_4 as GPIO output for ATA reset */
	(vu_long ) MPC5XXX_WU_GPIO_ENABLE \|= GPIO_PSC1_4;
	(vu_long ) MPC5XXX_WU_GPIO_DIR \|= GPIO_PSC1_4;
	}

	void ide_set_reset (int idereset)
	{
	debug ("ide_reset(%d)\n", idereset);

	if (idereset) {
	(vu_long ) MPC5XXX_WU_GPIO_DATA_O &= ~GPIO_PSC1_4;
	} else {
	(vu_long ) MPC5XXX_WU_GPIO_DATA_O \|= GPIO_PSC1_4;
	}
	}
	#endif

	#ifdef CONFIG_POST
	/*
	* Reads GPIO pin PSC6_3. A keypress is reported, if PSC6_3 is low. If PSC6_3
	* is left open, no keypress is detected.
	*/
	int post_hotkeys_pressed(void)
	{
	struct mpc5xxx_gpio *gpio;

	gpio = (struct mpc5xxx_gpio*) MPC5XXX_GPIO;

	/*
	* Configure PSC6_1 and PSC6_3 as GPIO. PSC6 then couldn't be used in
	* CODEC or UART mode. Consumer IrDA should still be possible.
	*/
	gpio->port_config &= ~(0x07000000);
	gpio->port_config \|= 0x03000000;

	/* Enable GPIO for GPIO_IRDA_1 (IR_USB_CLK pin) = PSC6_3 */
	gpio->simple_gpioe \|= 0x20000000;

	/* Configure GPIO_IRDA_1 as input */
	gpio->simple_ddr &= ~(0x20000000);

	return ((gpio->simple_ival & 0x20000000) ? 0 : 1);
	}
	#endif

	#ifdef CONFIG_BOARD_EARLY_INIT_R
	int board_early_init_r (void)
	{
	#ifdef CONFIG_RTC_MPC5200
	struct rtc_time t;

	/* set to Wed Dec 31 19:00:00 1969 */
	t.tm_sec = t.tm_min = 0;
	t.tm_hour = 19;
	t.tm_mday = 31;
	t.tm_mon = 12;
	t.tm_year = 1969;
	t.tm_wday = 3;

	rtc_set(&t);
	#endif /* CONFIG_RTC_MPC5200 */

	#ifdef CONFIG_PS2MULT
	ps2mult_early_init();
	#endif /* CONFIG_PS2MULT */
	return (0);
	}
	#endif /* CONFIG_BOARD_EARLY_INIT_R */


	int last_stage_init (void)
	{
	/*
	* auto scan for really existing devices and re-set chip select
	* configuration.
	*/
	u16 save, tmp;
	int restore;

	/*
	* Check for SRAM and SRAM size
	*/

	/* save original SRAM content */
	save = (volatile u16 )CONFIG_SYS_CS2_START;
	restore = 1;

	/* write test pattern to SRAM */
	(volatile u16 )CONFIG_SYS_CS2_START = 0xA5A5;
	__asm__ volatile ("sync");
	/*
	* Put a different pattern on the data lines: otherwise they may float
	* long enough to read back what we wrote.
	*/
	tmp = (volatile u16 )CONFIG_SYS_FLASH_BASE;
	if (tmp == 0xA5A5)
	puts ("!! possible error in SRAM detection\n");

	if ((volatile u16 )CONFIG_SYS_CS2_START != 0xA5A5) {
	/* no SRAM at all, disable cs */
	(vu_long )MPC5XXX_ADDECR &= ~(1 << 18);
	(vu_long )MPC5XXX_CS2_START = 0x0000FFFF;
	(vu_long )MPC5XXX_CS2_STOP = 0x0000FFFF;
	restore = 0;
	__asm__ volatile ("sync");
	} else if ((volatile u16 )(CONFIG_SYS_CS2_START + (1<<19)) == 0xA5A5) {
	/* make sure that we access a mirrored address */
	(volatile u16 )CONFIG_SYS_CS2_START = 0x1111;
	__asm__ volatile ("sync");
	if ((volatile u16 )(CONFIG_SYS_CS2_START + (1<<19)) == 0x1111) {
	/* SRAM size = 512 kByte */
	(vu_long )MPC5XXX_CS2_STOP = STOP_REG(CONFIG_SYS_CS2_START,
	0x80000);
	__asm__ volatile ("sync");
	puts ("SRAM: 512 kB\n");
	}
	else
	puts ("!! possible error in SRAM detection\n");
	} else {
	puts ("SRAM: 1 MB\n");
	}
	/* restore origianl SRAM content */
	if (restore) {
	(volatile u16 )CONFIG_SYS_CS2_START = save;
	__asm__ volatile ("sync");
	}

	/*
	* Check for Grafic Controller
	*/

	/* save origianl FB content */
	save = (volatile u16 )CONFIG_SYS_CS1_START;
	restore = 1;

	/* write test pattern to FB memory */
	(volatile u16 )CONFIG_SYS_CS1_START = 0xA5A5;
	__asm__ volatile ("sync");
	/*
	* Put a different pattern on the data lines: otherwise they may float
	* long enough to read back what we wrote.
	*/
	tmp = (volatile u16 )CONFIG_SYS_FLASH_BASE;
	if (tmp == 0xA5A5)
	puts ("!! possible error in grafic controller detection\n");

	if ((volatile u16 )CONFIG_SYS_CS1_START != 0xA5A5) {
	/* no grafic controller at all, disable cs */
	(vu_long )MPC5XXX_ADDECR &= ~(1 << 17);
	(vu_long )MPC5XXX_CS1_START = 0x0000FFFF;
	(vu_long )MPC5XXX_CS1_STOP = 0x0000FFFF;
	restore = 0;
	__asm__ volatile ("sync");
	} else {
	puts ("VGA: SMI501 (Voyager) with 8 MB\n");
	}
	/* restore origianl FB content */
	if (restore) {
	(volatile u16 )CONFIG_SYS_CS1_START = save;
	__asm__ volatile ("sync");
	}

	return 0;
	}

	#ifdef CONFIG_VIDEO_SM501

	#define DISPLAY_WIDTH 640
	#define DISPLAY_HEIGHT 480

	#ifdef CONFIG_VIDEO_SM501_8BPP
	#error CONFIG_VIDEO_SM501_8BPP not supported.
	#endif /* CONFIG_VIDEO_SM501_8BPP */

	#ifdef CONFIG_VIDEO_SM501_16BPP
	#error CONFIG_VIDEO_SM501_16BPP not supported.
	#endif /* CONFIG_VIDEO_SM501_16BPP */

	#ifdef CONFIG_VIDEO_SM501_32BPP
	static const SMI_REGS init_regs [] =
	{
	#if defined (CONFIG_BC3450_FP) && !defined (CONFIG_BC3450_CRT)
	/* FP only */
	{0x00004, 0x0},
	{0x00048, 0x00021807},
	{0x0004C, 0x091a0a01},
	{0x00054, 0x1},
	{0x00040, 0x00021807},
	{0x00044, 0x091a0a01},
	{0x00054, 0x0},
	{0x80000, 0x01013106},
	{0x80004, 0xc428bb17},
	{0x80000, 0x03013106},
	{0x8000C, 0x00000000},
	{0x80010, 0x0a000a00},
	{0x80014, 0x02800000},
	{0x80018, 0x01e00000},
	{0x8001C, 0x00000000},
	{0x80020, 0x01e00280},
	{0x80024, 0x02fa027f},
	{0x80028, 0x004a028b},
	{0x8002C, 0x020c01df},
	{0x80030, 0x000201e9},
	{0x80200, 0x00010200},
	{0x80000, 0x0f013106},
	#elif defined (CONFIG_BC3450_CRT) && !defined (CONFIG_BC3450_FP)
	/* CRT only */
	{0x00004, 0x0},
	{0x00048, 0x00021807},
	{0x0004C, 0x10090a01},
	{0x00054, 0x1},
	{0x00040, 0x00021807},
	{0x00044, 0x10090a01},
	{0x00054, 0x0},
	{0x80200, 0x00010000},
	{0x80204, 0x0},
	{0x80208, 0x0A000A00},
	{0x8020C, 0x02fa027f},
	{0x80210, 0x004a028b},
	{0x80214, 0x020c01df},
	{0x80218, 0x000201e9},
	{0x80200, 0x00013306},
	#else /* panel + CRT */
	{0x00004, 0x0},
	{0x00048, 0x00021807},
	{0x0004C, 0x091a0a01},
	{0x00054, 0x1},
	{0x00040, 0x00021807},
	{0x00044, 0x091a0a01},
	{0x00054, 0x0},
	{0x80000, 0x0f013106},
	{0x80004, 0xc428bb17},
	{0x8000C, 0x00000000},
	{0x80010, 0x0a000a00},
	{0x80014, 0x02800000},
	{0x80018, 0x01e00000},
	{0x8001C, 0x00000000},
	{0x80020, 0x01e00280},
	{0x80024, 0x02fa027f},
	{0x80028, 0x004a028b},
	{0x8002C, 0x020c01df},
	{0x80030, 0x000201e9},
	{0x80200, 0x00010000},
	#endif
	{0, 0}
	};
	#endif /* CONFIG_VIDEO_SM501_32BPP */

	#ifdef CONFIG_CONSOLE_EXTRA_INFO
	/*
	* Return text to be printed besides the logo.
	*/
	void video_get_info_str (int line_number, char *info)
	{
	if (line_number == 1) {
	#if defined (CONFIG_TQM5200)
	strcpy (info, " Board: TQM5200 (TQ-Components GmbH)");
	#else
	#error No supported board selected
	#endif /* CONFIG_TQM5200 */

	#if defined (CONFIG_BC3450)
	} else if (line_number == 2) {
	strcpy (info, " Dev: GERSYS BC3450");
	#endif /* CONFIG_BC3450 */
	}
	else {
	info [0] = '\0';
	}
	}
	#endif

	/*
	* Returns SM501 register base address. First thing called in the
	* driver. Checks if SM501 is physically present.
	*/
	unsigned int board_video_init (void)
	{
	u16 save, tmp;
	int restore, ret;

	/*
	* Check for Grafic Controller
	*/

	/* save origianl FB content */
	save = (volatile u16 )CONFIG_SYS_CS1_START;
	restore = 1;

	/* write test pattern to FB memory */
	(volatile u16 )CONFIG_SYS_CS1_START = 0xA5A5;
	__asm__ volatile ("sync");
	/*
	* Put a different pattern on the data lines: otherwise they may float
	* long enough to read back what we wrote.
	*/
	tmp = (volatile u16 )CONFIG_SYS_FLASH_BASE;
	if (tmp == 0xA5A5)
	puts ("!! possible error in grafic controller detection\n");

	if ((volatile u16 )CONFIG_SYS_CS1_START != 0xA5A5) {
	/* no grafic controller found */
	restore = 0;
	ret = 0;
	} else {
	ret = SM501_MMIO_BASE;
	}

	if (restore) {
	(volatile u16 )CONFIG_SYS_CS1_START = save;
	__asm__ volatile ("sync");
	}
	return ret;
	}

	/*
	* Returns SM501 framebuffer address
	*/
	unsigned int board_video_get_fb (void)
	{
	return SM501_FB_BASE;
	}

	/*
	* Called after initializing the SM501 and before clearing the screen.
	*/
	void board_validate_screen (unsigned int base)
	{
	}

	/*
	* Return a pointer to the initialization sequence.
	*/
	const SMI_REGS *board_get_regs (void)
	{
	return init_regs;
	}

	int board_get_width (void)
	{
	return DISPLAY_WIDTH;
	}

	int board_get_height (void)
	{
	return DISPLAY_HEIGHT;
	}

	#endif /* CONFIG_VIDEO_SM501 */

	int board_eth_init(bd_t *bis)
	{
	cpu_eth_init(bis); /* Built in FEC comes first */
	return pci_eth_init(bis);
	}