[people/ms/u-boot.git] / board / phytec / pcm030 / pcm030.c

/*
 * (C) Copyright 2003
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * (C) Copyright 2004
 * Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
 *
 * (C) Copyright 2006
 * Eric Schumann, Phytec Messtechnik GmbH
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <mpc5xxx.h>
#include <pci.h>
#include <asm/io.h>

#include "mt46v32m16-75.h"

DECLARE_GLOBAL_DATA_PTR;

#ifndef CONFIG_SYS_RAMBOOT
static void sdram_start(int hi_addr)
{
	volatile struct mpc5xxx_cdm *cdm =
		(struct mpc5xxx_cdm *)MPC5XXX_CDM;
	volatile struct mpc5xxx_sdram *sdram =
		(struct mpc5xxx_sdram *)MPC5XXX_SDRAM;

	long hi_addr_bit = hi_addr ? 0x01000000 : 0;

	/* unlock mode register */
	out_be32 (&sdram->ctrl,
		(SDRAM_CONTROL | 0x80000000 | hi_addr_bit));

	/* precharge all banks */
	out_be32 (&sdram->ctrl,
		(SDRAM_CONTROL | 0x80000002 | hi_addr_bit));

#ifdef SDRAM_DDR
	/* set mode register: extended mode */
	out_be32 (&sdram->mode, (SDRAM_EMODE));

	/* set mode register: reset DLL */
	out_be32 (&sdram->mode,
		(SDRAM_MODE | 0x04000000));
#endif

	/* precharge all banks */
	out_be32 (&sdram->ctrl,
		(SDRAM_CONTROL | 0x80000002 | hi_addr_bit));

	/* auto refresh */
	out_be32 (&sdram->ctrl,
		(SDRAM_CONTROL | 0x80000004 | hi_addr_bit));

	/* set mode register */
	out_be32 (&sdram->mode, (SDRAM_MODE));

	/* normal operation */
	out_be32 (&sdram->ctrl,
		(SDRAM_CONTROL | hi_addr_bit));

	/* set CDM clock enable register, set MPC5200B SDRAM bus */
	/* to reduced driver strength */
	out_be32 (&cdm->clock_enable, (0x00CFFFFF));
}
#endif

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

int initdram(void)
{
	volatile struct mpc5xxx_mmap_ctl *mm =
		(struct mpc5xxx_mmap_ctl *)CONFIG_SYS_MBAR;
	volatile struct mpc5xxx_cdm *cdm =
		(struct mpc5xxx_cdm *)MPC5XXX_CDM;
	volatile struct mpc5xxx_sdram *sdram =
		(struct mpc5xxx_sdram *)MPC5XXX_SDRAM;
	ulong dramsize = 0;
	ulong dramsize2 = 0;
#ifndef CONFIG_SYS_RAMBOOT
	ulong test1, test2;

	/* setup SDRAM chip selects */
							 /* 256MB at 0x0 */
	out_be32 (&mm->sdram0, 0x0000001b);
							 /* disabled */
	out_be32 (&mm->sdram1, 0x10000000);

	/* setup config registers */
	out_be32 (&sdram->config1, SDRAM_CONFIG1);
	out_be32 (&sdram->config2, SDRAM_CONFIG2);

#if defined(SDRAM_DDR) && defined(SDRAM_TAPDELAY)
	/* set tap delay */
	out_be32 (&cdm->porcfg, SDRAM_TAPDELAY);
#endif

	/* find RAM size using SDRAM CS0 only */
	sdram_start(0);
	test1 = get_ram_size((long *) CONFIG_SYS_SDRAM_BASE, 0x10000000);
	sdram_start(1);
	test2 = get_ram_size((long *) CONFIG_SYS_SDRAM_BASE, 0x10000000);
	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) {
		out_be32 (&mm->sdram0,
			(0x13 + __builtin_ffs(dramsize >> 20) - 1));
	} else {
							/* disabled */
		out_be32 (&mm->sdram0, 0);
	}

#else /* CONFIG_SYS_RAMBOOT */

	/* retrieve size of memory connected to SDRAM CS0 */
	dramsize = in_be32(&mm->sdram0) & 0xFF;
	if (dramsize >= 0x13)
		dramsize = (1 << (dramsize - 0x13)) << 20;
	else
		dramsize = 0;

	/* retrieve size of memory connected to SDRAM CS1 */
	dramsize2 = in_be32(&mm->sdram1) & 0xFF;
	if (dramsize2 >= 0x13)
		dramsize2 = (1 << (dramsize2 - 0x13)) << 20;
	else
		dramsize2 = 0;

#endif /* CONFIG_SYS_RAMBOOT */

	gd->ram_size = dramsize + dramsize2;

	return 0;
}

int checkboard(void)
{
	puts("Board: phyCORE-MPC5200B-tiny\n");
	return 0;
}

#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

#ifdef CONFIG_OF_BOARD_SETUP
int ft_board_setup(void *blob, bd_t *bd)
{
	ft_cpu_setup(blob, bd);

	return 0;
}
#endif /* CONFIG_OF_BOARD_SETUP */

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

#define GPIO_PSC2_4	0x02000000UL

void init_ide_reset(void)
{
	volatile struct mpc5xxx_wu_gpio *wu_gpio =
		(struct mpc5xxx_wu_gpio *)MPC5XXX_WU_GPIO;
	debug("init_ide_reset\n");

	/* Configure PSC2_4 as GPIO output for ATA reset */
	setbits_be32(&wu_gpio->enable, GPIO_PSC2_4);
	setbits_be32(&wu_gpio->ddr, GPIO_PSC2_4);
	/* Deassert reset */
	setbits_be32(&wu_gpio->dvo, GPIO_PSC2_4);
}

void ide_set_reset(int idereset)
{
	volatile struct mpc5xxx_wu_gpio *wu_gpio =
		(struct mpc5xxx_wu_gpio *)MPC5XXX_WU_GPIO;
	debug("ide_reset(%d)\n", idereset);

	if (idereset) {
		clrbits_be32(&wu_gpio->dvo, GPIO_PSC2_4);
		/* Make a delay. MPC5200 spec says 25 usec min */
		udelay(500000);
	} else
		setbits_be32(&wu_gpio->dvo, GPIO_PSC2_4);
}
#endif /* defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_RESET) */
Commit	Line	Data
c9969947 JS	1	/*
	2	* (C) Copyright 2003
	3	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	4	*
	5	* (C) Copyright 2004
	6	* Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
	7	*
	8	* (C) Copyright 2006
	9	* Eric Schumann, Phytec Messtechnik GmbH
	10	*
1a459660	11	* SPDX-License-Identifier: GPL-2.0+
c9969947 JS	12	*/
	13
	14	#include <common.h>
	15	#include <mpc5xxx.h>
	16	#include <pci.h>
61f2b38a	17	#include <asm/io.h>
c9969947 JS	18
	19	#include "mt46v32m16-75.h"
	20
088454cd SG	21	DECLARE_GLOBAL_DATA_PTR;
088454cd SG	22
c9969947 JS	23	#ifndef CONFIG_SYS_RAMBOOT
	24	static void sdram_start(int hi_addr)
	25	{
	26	volatile struct mpc5xxx_cdm *cdm =
	27	(struct mpc5xxx_cdm *)MPC5XXX_CDM;
	28	volatile struct mpc5xxx_sdram *sdram =
	29	(struct mpc5xxx_sdram *)MPC5XXX_SDRAM;
	30
	31	long hi_addr_bit = hi_addr ? 0x01000000 : 0;
	32
	33	/* unlock mode register */
	34	out_be32 (&sdram->ctrl,
	35	(SDRAM_CONTROL \| 0x80000000 \| hi_addr_bit));
	36
	37	/* precharge all banks */
	38	out_be32 (&sdram->ctrl,
	39	(SDRAM_CONTROL \| 0x80000002 \| hi_addr_bit));
	40
	41	#ifdef SDRAM_DDR
	42	/* set mode register: extended mode */
	43	out_be32 (&sdram->mode, (SDRAM_EMODE));
	44
	45	/* set mode register: reset DLL */
	46	out_be32 (&sdram->mode,
	47	(SDRAM_MODE \| 0x04000000));
	48	#endif
	49
	50	/* precharge all banks */
	51	out_be32 (&sdram->ctrl,
	52	(SDRAM_CONTROL \| 0x80000002 \| hi_addr_bit));
	53
	54	/* auto refresh */
	55	out_be32 (&sdram->ctrl,
	56	(SDRAM_CONTROL \| 0x80000004 \| hi_addr_bit));
	57
	58	/* set mode register */
	59	out_be32 (&sdram->mode, (SDRAM_MODE));
	60
	61	/* normal operation */
	62	out_be32 (&sdram->ctrl,
	63	(SDRAM_CONTROL \| hi_addr_bit));
	64
	65	/* set CDM clock enable register, set MPC5200B SDRAM bus */
	66	/* to reduced driver strength */
	67	out_be32 (&cdm->clock_enable, (0x00CFFFFF));
	68	}
	69	#endif
	70
	71	/*
	72	* ATTENTION: Although partially referenced initdram does NOT make
	73	* real use of CONFIG_SYS_SDRAM_BASE. The code does not
	74	* work if CONFIG_SYS_SDRAM_BASE
	75	* is something else than 0x00000000.
	76	*/
	77
088454cd	78	int initdram(void)
c9969947 JS	79	{
	80	volatile struct mpc5xxx_mmap_ctl *mm =
	81	(struct mpc5xxx_mmap_ctl *)CONFIG_SYS_MBAR;
	82	volatile struct mpc5xxx_cdm *cdm =
	83	(struct mpc5xxx_cdm *)MPC5XXX_CDM;
	84	volatile struct mpc5xxx_sdram *sdram =
	85	(struct mpc5xxx_sdram *)MPC5XXX_SDRAM;
	86	ulong dramsize = 0;
	87	ulong dramsize2 = 0;
	88	#ifndef CONFIG_SYS_RAMBOOT
	89	ulong test1, test2;
	90
	91	/* setup SDRAM chip selects */
	92	/* 256MB at 0x0 */
	93	out_be32 (&mm->sdram0, 0x0000001b);
	94	/* disabled */
	95	out_be32 (&mm->sdram1, 0x10000000);
	96
	97	/* setup config registers */
	98	out_be32 (&sdram->config1, SDRAM_CONFIG1);
	99	out_be32 (&sdram->config2, SDRAM_CONFIG2);
	100
	101	#if defined(SDRAM_DDR) && defined(SDRAM_TAPDELAY)
	102	/* set tap delay */
	103	out_be32 (&cdm->porcfg, SDRAM_TAPDELAY);
	104	#endif
	105
	106	/* find RAM size using SDRAM CS0 only */
	107	sdram_start(0);
	108	test1 = get_ram_size((long *) CONFIG_SYS_SDRAM_BASE, 0x10000000);
	109	sdram_start(1);
	110	test2 = get_ram_size((long *) CONFIG_SYS_SDRAM_BASE, 0x10000000);
	111	if (test1 > test2) {
	112	sdram_start(0);
	113	dramsize = test1;
	114	} else
	115	dramsize = test2;
	116
	117	/* memory smaller than 1MB is impossible */
	118	if (dramsize < (1 << 20))
	119	dramsize = 0;
	120
	121	/* set SDRAM CS0 size according to the amount of RAM found */
	122	if (dramsize > 0) {
	123	out_be32 (&mm->sdram0,
	124	(0x13 + __builtin_ffs(dramsize >> 20) - 1));
	125	} else {
	126	/* disabled */
	127	out_be32 (&mm->sdram0, 0);
	128	}
	129
	130	#else /* CONFIG_SYS_RAMBOOT */
	131
	132	/* retrieve size of memory connected to SDRAM CS0 */
	133	dramsize = in_be32(&mm->sdram0) & 0xFF;
	134	if (dramsize >= 0x13)
	135	dramsize = (1 << (dramsize - 0x13)) << 20;
	136	else
	137	dramsize = 0;
	138
	139	/* retrieve size of memory connected to SDRAM CS1 */
	140	dramsize2 = in_be32(&mm->sdram1) & 0xFF;
	141	if (dramsize2 >= 0x13)
	142	dramsize2 = (1 << (dramsize2 - 0x13)) << 20;
143	else
144	dramsize2 = 0;
145
146	#endif /* CONFIG_SYS_RAMBOOT */
147
088454cd SG	148	gd->ram_size = dramsize + dramsize2;
	149
	150	return 0;
c9969947 JS	151	}
	152
	153	int checkboard(void)
	154	{
	155	puts("Board: phyCORE-MPC5200B-tiny\n");
	156	return 0;
	157	}
	158
	159	#ifdef CONFIG_PCI
	160	static struct pci_controller hose;
	161
	162	extern void pci_mpc5xxx_init(struct pci_controller *);
	163
	164	void pci_init_board(void)
	165	{
	166	pci_mpc5xxx_init(&hose);
	167	}
	168	#endif
	169
7ffe3cd6	170	#ifdef CONFIG_OF_BOARD_SETUP
e895a4b0	171	int ft_board_setup(void blob, bd_t bd)
c9969947 JS	172	{
c9969947 JS	173	ft_cpu_setup(blob, bd);
e895a4b0 SG	174
e895a4b0 SG	175	return 0;
c9969947	176	}
7ffe3cd6	177	#endif /* CONFIG_OF_BOARD_SETUP */
c9969947 JS	178
	179	#if defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_RESET)
	180
	181	#define GPIO_PSC2_4 0x02000000UL
	182
	183	void init_ide_reset(void)
	184	{
	185	volatile struct mpc5xxx_wu_gpio *wu_gpio =
	186	(struct mpc5xxx_wu_gpio *)MPC5XXX_WU_GPIO;
	187	debug("init_ide_reset\n");
	188
	189	/* Configure PSC2_4 as GPIO output for ATA reset */
	190	setbits_be32(&wu_gpio->enable, GPIO_PSC2_4);
	191	setbits_be32(&wu_gpio->ddr, GPIO_PSC2_4);
	192	/* Deassert reset */
	193	setbits_be32(&wu_gpio->dvo, GPIO_PSC2_4);
	194	}
	195
	196	void ide_set_reset(int idereset)
	197	{
	198	volatile struct mpc5xxx_wu_gpio *wu_gpio =
	199	(struct mpc5xxx_wu_gpio *)MPC5XXX_WU_GPIO;
	200	debug("ide_reset(%d)\n", idereset);
	201
	202	if (idereset) {
	203	clrbits_be32(&wu_gpio->dvo, GPIO_PSC2_4);
	204	/* Make a delay. MPC5200 spec says 25 usec min */
	205	udelay(500000);
	206	} else
	207	setbits_be32(&wu_gpio->dvo, GPIO_PSC2_4);
	208	}
	209	#endif /* defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_RESET) */