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Diffstat (limited to 'board/bc3450/bc3450.c')
| -rw-r--r-- | board/bc3450/bc3450.c | 677 | 
1 files changed, 677 insertions, 0 deletions
| diff --git a/board/bc3450/bc3450.c b/board/bc3450/bc3450.c new file mode 100644 index 000000000..a030b8287 --- /dev/null +++ b/board/bc3450/bc3450.c @@ -0,0 +1,677 @@ +/* + * -- Version 1.1 -- + * + * (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 + * + * History: + *	1.1 - improved SM501 init to meet spec timing + * + * 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> + +#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 CFG_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 CFG_SDRAM_BASE. The code does not work if CFG_SDRAM_BASE + *	      is something else than 0x00000000. + */ + +#if defined(CONFIG_MPC5200) +long int initdram (int board_type) +{ +	ulong dramsize = 0; +	ulong dramsize2 = 0; +#ifndef CFG_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 *)CFG_SDRAM_BASE, 0x20000000); +	sdram_start(1); +	test2 = get_ram_size((long *)CFG_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 *)(CFG_SDRAM_BASE + dramsize), 0x20000000); +	sdram_start(1); +	test2 = get_ram_size((long *)(CFG_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 /* CFG_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 /* CFG_RAMBOOT */ + +	return dramsize; +} + +#elif defined(CONFIG_MGT5100) + +long int initdram (int board_type) +{ +	ulong dramsize = 0; +#ifndef CFG_RAMBOOT +	ulong test1, test2; + +	/* setup and enable SDRAM chip selects */ +	*(vu_long *)MPC5XXX_SDRAM_START = 0x00000000; +	*(vu_long *)MPC5XXX_SDRAM_STOP = 0x0000ffff;	/* 2G		*/ +	*(vu_long *)MPC5XXX_ADDECR |= (1 << 22);	/* Enable SDRAM */ +	__asm__ volatile ("sync"); + +	/* setup config registers */ +	*(vu_long *)MPC5XXX_SDRAM_CONFIG1 = SDRAM_CONFIG1; +	*(vu_long *)MPC5XXX_SDRAM_CONFIG2 = SDRAM_CONFIG2; + +	/* address select register */ +	*(vu_long *)MPC5XXX_SDRAM_XLBSEL = SDRAM_ADDRSEL; +	__asm__ volatile ("sync"); + +	/* find RAM size */ +	sdram_start(0); +	test1 = get_ram_size((ulong *)CFG_SDRAM_BASE, 0x80000000); +	sdram_start(1); +	test2 = get_ram_size((ulong *)CFG_SDRAM_BASE, 0x80000000); +	if (test1 > test2) { +		sdram_start(0); +		dramsize = test1; +	} else { +		dramsize = test2; +	} + +	/* set SDRAM end address according to size */ +	*(vu_long *)MPC5XXX_SDRAM_STOP = ((dramsize - 1) >> 15); + +#else /* CFG_RAMBOOT */ + +	/* Retrieve amount of SDRAM available */ +	dramsize = ((*(vu_long *)MPC5XXX_SDRAM_STOP + 1) << 15); + +#endif /* CFG_RAMBOOT */ + +	return dramsize; +} + +#else +#error Neither CONFIG_MPC5200 or CONFIG_MGT5100 defined +#endif + +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. +	 */ +#if defined(CONFIG_MGT5100) +	*(vu_long *)MPC5XXX_ADDECR &= ~(1 << 25);	/* disable CS_BOOT */ +	*(vu_long *)MPC5XXX_ADDECR |= (1 << 16);	/* enable CS0	   */ +#endif +	*(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 (CFG_CMD_IDE) && defined (CONFIG_IDE_RESET) +#define GPIO_PSC1_4	0x01000000UL + +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 &= ~GPIO_PSC1_4; +	} else { +		*(vu_long *) MPC5XXX_WU_GPIO_DATA |=  GPIO_PSC1_4; +	} +} +#endif /* defined (CFG_CMD_IDE) && defined (CONFIG_IDE_RESET) */ + +#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 + +#if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER) + +void post_word_store (ulong a) +{ +	volatile ulong *save_addr = +		(volatile ulong *)(MPC5XXX_SRAM + MPC5XXX_SRAM_POST_SIZE); + +	*save_addr = a; +} + +ulong post_word_load (void) +{ +	volatile ulong *save_addr = +		(volatile ulong *)(MPC5XXX_SRAM + MPC5XXX_SRAM_POST_SIZE); + +	return *save_addr; +} +#endif	/* CONFIG_POST || CONFIG_LOGBUFFER*/ + + +#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 *)CFG_CS2_START; +	restore = 1; + +	/* write test pattern to SRAM */ +	*(volatile u16 *)CFG_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 *)CFG_FLASH_BASE; +	if (tmp == 0xA5A5) +		puts ("!! possible error in SRAM detection\n"); + +	if (*(volatile u16 *)CFG_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 *)(CFG_CS2_START + (1<<19)) == 0xA5A5) { +		/* make sure that we access a mirrored address */ +		*(volatile u16 *)CFG_CS2_START = 0x1111; +		__asm__ volatile ("sync"); +		if (*(volatile u16 *)(CFG_CS2_START + (1<<19)) == 0x1111) { +			/* SRAM size = 512 kByte */ +			*(vu_long *)MPC5XXX_CS2_STOP = STOP_REG(CFG_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 *)CFG_CS2_START = save; +		__asm__ volatile ("sync"); +	} + +	/* +	 * Check for Grafic Controller +	 */ + +	/* save origianl FB content  */ +	save = *(volatile u16 *)CFG_CS1_START; +	restore = 1; + +	/* write test pattern to FB memory */ +	*(volatile u16 *)CFG_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 *)CFG_FLASH_BASE; +	if (tmp == 0xA5A5) +		puts ("!! possible error in grafic controller detection\n"); + +	if (*(volatile u16 *)CFG_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 *)CFG_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 *)CFG_CS1_START; +	restore = 1; + +	/* write test pattern to FB memory */ +	*(volatile u16 *)CFG_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 *)CFG_FLASH_BASE; +	if (tmp == 0xA5A5) +		puts ("!! possible error in grafic controller detection\n"); + +	if (*(volatile u16 *)CFG_CS1_START != 0xA5A5) { +		/* no grafic controller found */ +		restore = 0; +		ret = 0; +	} else { +	    ret = SM501_MMIO_BASE; +	} +	 +	if (restore) { +		*(volatile u16 *)CFG_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 */ |