[people/ms/u-boot.git] / board / CarMediaLab / flea3 / flea3.c

/*
 * Copyright (C) 2007, Guennadi Liakhovetski <lg@denx.de>
 *
 * (C) Copyright 2008-2010 Freescale Semiconductor, Inc.
 *
 * Copyright (C) 2011, Stefano Babic <sbabic@denx.de>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <asm/io.h>
#include <asm/errno.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/crm_regs.h>
#include <asm/arch/iomux-mx35.h>
#include <i2c.h>
#include <linux/types.h>
#include <asm/gpio.h>
#include <asm/arch/sys_proto.h>
#include <netdev.h>

#ifndef CONFIG_BOARD_EARLY_INIT_F
#error "CONFIG_BOARD_EARLY_INIT_F must be set for this board"
#endif

#define CCM_CCMR_CONFIG		0x003F4208

#define ESDCTL_DDR2_CONFIG	0x007FFC3F
#define ESDCTL_0x92220000	0x92220000
#define ESDCTL_0xA2220000	0xA2220000
#define ESDCTL_0xB2220000	0xB2220000
#define ESDCTL_0x82228080	0x82228080
#define ESDCTL_DDR2_EMR2	0x04000000
#define ESDCTL_DDR2_EMR3	0x06000000
#define ESDCTL_PRECHARGE	0x00000400
#define ESDCTL_DDR2_EN_DLL	0x02000400
#define ESDCTL_DDR2_RESET_DLL	0x00000333
#define ESDCTL_DDR2_MR		0x00000233
#define ESDCTL_DDR2_OCD_DEFAULT 0x02000780
#define ESDCTL_DELAY_LINE5	0x00F49F00

static inline void dram_wait(unsigned int count)
{
	volatile unsigned int wait = count;

	while (wait--)
		;
}

DECLARE_GLOBAL_DATA_PTR;

int dram_init(void)
{
	gd->ram_size = get_ram_size((long *)PHYS_SDRAM_1,
		PHYS_SDRAM_1_SIZE);

	return 0;
}

static void board_setup_sdram_bank(u32 start_address)

{
	struct esdc_regs *esdc = (struct esdc_regs *)ESDCTL_BASE_ADDR;
	u32 *cfg_reg, *ctl_reg;
	u32 val;

	switch (start_address) {
	case CSD0_BASE_ADDR:
		cfg_reg = &esdc->esdcfg0;
		ctl_reg = &esdc->esdctl0;
		break;
	case CSD1_BASE_ADDR:
		cfg_reg = &esdc->esdcfg1;
		ctl_reg = &esdc->esdctl1;
		break;
	default:
		return;
	}

	/* Initialize MISC register for DDR2 */
	val = ESDC_MISC_RST | ESDC_MISC_MDDR_EN | ESDC_MISC_MDDR_DL_RST |
		ESDC_MISC_DDR_EN | ESDC_MISC_DDR2_EN;
	writel(val, &esdc->esdmisc);
	val &= ~(ESDC_MISC_RST | ESDC_MISC_MDDR_DL_RST);
	writel(val, &esdc->esdmisc);

	/*
	 * according to DDR2 specs, wait a while before
	 * the PRECHARGE_ALL command
	 */
	dram_wait(0x20000);

	/* Load DDR2 config and timing */
	writel(ESDCTL_DDR2_CONFIG, cfg_reg);

	/* Precharge ALL */
	writel(ESDCTL_0x92220000,
		ctl_reg);
	writel(0xda, start_address + ESDCTL_PRECHARGE);

	/* Load mode */
	writel(ESDCTL_0xB2220000,
		ctl_reg);
	writeb(0xda, start_address + ESDCTL_DDR2_EMR2); /* EMRS2 */
	writeb(0xda, start_address + ESDCTL_DDR2_EMR3); /* EMRS3 */
	writeb(0xda, start_address + ESDCTL_DDR2_EN_DLL); /* Enable DLL */
	writeb(0xda, start_address + ESDCTL_DDR2_RESET_DLL); /* Reset DLL */

	/* Precharge ALL */
	writel(ESDCTL_0x92220000,
		ctl_reg);
	writel(0xda, start_address + ESDCTL_PRECHARGE);

	/* Set mode auto refresh : at least two refresh are required */
	writel(ESDCTL_0xA2220000,
		ctl_reg);
	writel(0xda, start_address);
	writel(0xda, start_address);

	writel(ESDCTL_0xB2220000,
		ctl_reg);
	writeb(0xda, start_address + ESDCTL_DDR2_MR);
	writeb(0xda, start_address + ESDCTL_DDR2_OCD_DEFAULT);

	/* OCD mode exit */
	writeb(0xda, start_address + ESDCTL_DDR2_EN_DLL); /* Enable DLL */

	/* Set normal mode */
	writel(ESDCTL_0x82228080,
		ctl_reg);

	dram_wait(0x20000);

	/* Do not set delay lines, only for MDDR */
}

static void board_setup_sdram(void)
{
	struct esdc_regs *esdc = (struct esdc_regs *)ESDCTL_BASE_ADDR;

	/* Initialize with default values both CSD0/1 */
	writel(0x2000, &esdc->esdctl0);
	writel(0x2000, &esdc->esdctl1);

	board_setup_sdram_bank(CSD0_BASE_ADDR);
}

static void setup_iomux_uart3(void)
{
	static const iomux_v3_cfg_t uart3_pads[] = {
		MX35_PAD_RTS2__UART3_RXD_MUX,
		MX35_PAD_CTS2__UART3_TXD_MUX,
	};

	imx_iomux_v3_setup_multiple_pads(uart3_pads, ARRAY_SIZE(uart3_pads));
}

#define I2C_PAD_CTRL	(PAD_CTL_HYS | PAD_CTL_PUS_100K_DOWN | PAD_CTL_ODE)

static void setup_iomux_i2c(void)
{
	static const iomux_v3_cfg_t i2c_pads[] = {
		NEW_PAD_CTRL(MX35_PAD_I2C1_CLK__I2C1_SCL, I2C_PAD_CTRL),
		NEW_PAD_CTRL(MX35_PAD_I2C1_DAT__I2C1_SDA, I2C_PAD_CTRL),

		NEW_PAD_CTRL(MX35_PAD_TX3_RX2__I2C3_SCL, I2C_PAD_CTRL),
		NEW_PAD_CTRL(MX35_PAD_TX2_RX3__I2C3_SDA, I2C_PAD_CTRL),
	};

	imx_iomux_v3_setup_multiple_pads(i2c_pads, ARRAY_SIZE(i2c_pads));
}


static void setup_iomux_spi(void)
{
	static const iomux_v3_cfg_t spi_pads[] = {
		MX35_PAD_CSPI1_MOSI__CSPI1_MOSI,
		MX35_PAD_CSPI1_MISO__CSPI1_MISO,
		MX35_PAD_CSPI1_SS0__CSPI1_SS0,
		MX35_PAD_CSPI1_SS1__CSPI1_SS1,
		MX35_PAD_CSPI1_SCLK__CSPI1_SCLK,
	};

	imx_iomux_v3_setup_multiple_pads(spi_pads, ARRAY_SIZE(spi_pads));
}

static void setup_iomux_fec(void)
{
	static const iomux_v3_cfg_t fec_pads[] = {
		MX35_PAD_FEC_TX_CLK__FEC_TX_CLK,
		MX35_PAD_FEC_RX_CLK__FEC_RX_CLK,
		MX35_PAD_FEC_RX_DV__FEC_RX_DV,
		MX35_PAD_FEC_COL__FEC_COL,
		MX35_PAD_FEC_RDATA0__FEC_RDATA_0,
		MX35_PAD_FEC_TDATA0__FEC_TDATA_0,
		MX35_PAD_FEC_TX_EN__FEC_TX_EN,
		MX35_PAD_FEC_MDC__FEC_MDC,
		MX35_PAD_FEC_MDIO__FEC_MDIO,
		MX35_PAD_FEC_TX_ERR__FEC_TX_ERR,
		MX35_PAD_FEC_RX_ERR__FEC_RX_ERR,
		MX35_PAD_FEC_CRS__FEC_CRS,
		MX35_PAD_FEC_RDATA1__FEC_RDATA_1,
		MX35_PAD_FEC_TDATA1__FEC_TDATA_1,
		MX35_PAD_FEC_RDATA2__FEC_RDATA_2,
		MX35_PAD_FEC_TDATA2__FEC_TDATA_2,
		MX35_PAD_FEC_RDATA3__FEC_RDATA_3,
		MX35_PAD_FEC_TDATA3__FEC_TDATA_3,
	};

	/* setup pins for FEC */
	imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads));
}

int board_early_init_f(void)
{
	struct ccm_regs *ccm =
		(struct ccm_regs *)IMX_CCM_BASE;

	/* setup GPIO3_1 to set HighVCore signal */
	imx_iomux_v3_setup_pad(MX35_PAD_ATA_DA1__GPIO3_1);
	gpio_direction_output(65, 1);

	/* initialize PLL and clock configuration */
	writel(CCM_CCMR_CONFIG, &ccm->ccmr);

	writel(CCM_MPLL_532_HZ, &ccm->mpctl);
	writel(CCM_PPLL_300_HZ, &ccm->ppctl);

	/* Set the core to run at 532 Mhz */
	writel(0x00001000, &ccm->pdr0);

	/* Set-up RAM */
	board_setup_sdram();

	/* enable clocks */
	writel(readl(&ccm->cgr0) |
		MXC_CCM_CGR0_EMI_MASK |
		MXC_CCM_CGR0_EDIO_MASK |
		MXC_CCM_CGR0_EPIT1_MASK,
		&ccm->cgr0);

	writel(readl(&ccm->cgr1) |
		MXC_CCM_CGR1_FEC_MASK |
		MXC_CCM_CGR1_GPIO1_MASK |
		MXC_CCM_CGR1_GPIO2_MASK |
		MXC_CCM_CGR1_GPIO3_MASK |
		MXC_CCM_CGR1_I2C1_MASK |
		MXC_CCM_CGR1_I2C2_MASK |
		MXC_CCM_CGR1_I2C3_MASK,
		&ccm->cgr1);

	/* Set-up NAND */
	__raw_writel(readl(&ccm->rcsr) | MXC_CCM_RCSR_NFC_FMS, &ccm->rcsr);

	/* Set pinmux for the required peripherals */
	setup_iomux_uart3();
	setup_iomux_i2c();
	setup_iomux_fec();
	setup_iomux_spi();

	return 0;
}

int board_init(void)
{
	/* address of boot parameters */
	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;

	return 0;
}

u32 get_board_rev(void)
{
	int rev = 0;

	return (get_cpu_rev() & ~(0xF << 8)) | (rev & 0xF) << 8;
}
Commit	Line	Data
deb53483 SB	1	/*
	2	* Copyright (C) 2007, Guennadi Liakhovetski <lg@denx.de>
	3	*
	4	* (C) Copyright 2008-2010 Freescale Semiconductor, Inc.
	5	*
	6	* Copyright (C) 2011, Stefano Babic <sbabic@denx.de>
	7	*
1a459660	8	* SPDX-License-Identifier: GPL-2.0+
deb53483 SB	9	*/
	10
	11	#include <common.h>
	12	#include <asm/io.h>
	13	#include <asm/errno.h>
	14	#include <asm/arch/imx-regs.h>
	15	#include <asm/arch/crm_regs.h>
686e1448	16	#include <asm/arch/iomux-mx35.h>
deb53483 SB	17	#include <i2c.h>
	18	#include <linux/types.h>
	19	#include <asm/gpio.h>
	20	#include <asm/arch/sys_proto.h>
	21	#include <netdev.h>
	22
	23	#ifndef CONFIG_BOARD_EARLY_INIT_F
	24	#error "CONFIG_BOARD_EARLY_INIT_F must be set for this board"
	25	#endif
	26
	27	#define CCM_CCMR_CONFIG 0x003F4208
	28
	29	#define ESDCTL_DDR2_CONFIG 0x007FFC3F
	30	#define ESDCTL_0x92220000 0x92220000
	31	#define ESDCTL_0xA2220000 0xA2220000
	32	#define ESDCTL_0xB2220000 0xB2220000
	33	#define ESDCTL_0x82228080 0x82228080
	34	#define ESDCTL_DDR2_EMR2 0x04000000
	35	#define ESDCTL_DDR2_EMR3 0x06000000
	36	#define ESDCTL_PRECHARGE 0x00000400
	37	#define ESDCTL_DDR2_EN_DLL 0x02000400
	38	#define ESDCTL_DDR2_RESET_DLL 0x00000333
	39	#define ESDCTL_DDR2_MR 0x00000233
	40	#define ESDCTL_DDR2_OCD_DEFAULT 0x02000780
	41	#define ESDCTL_DELAY_LINE5 0x00F49F00
	42
	43	static inline void dram_wait(unsigned int count)
	44	{
	45	volatile unsigned int wait = count;
	46
	47	while (wait--)
	48	;
	49	}
	50
	51	DECLARE_GLOBAL_DATA_PTR;
	52
	53	int dram_init(void)
	54	{
	55	gd->ram_size = get_ram_size((long *)PHYS_SDRAM_1,
	56	PHYS_SDRAM_1_SIZE);
	57
	58	return 0;
	59	}
	60
	61	static void board_setup_sdram_bank(u32 start_address)
	62
	63	{
	64	struct esdc_regs esdc = (struct esdc_regs )ESDCTL_BASE_ADDR;
	65	u32 cfg_reg, ctl_reg;
	66	u32 val;
	67
	68	switch (start_address) {
	69	case CSD0_BASE_ADDR:
	70	cfg_reg = &esdc->esdcfg0;
	71	ctl_reg = &esdc->esdctl0;
	72	break;
	73	case CSD1_BASE_ADDR:
	74	cfg_reg = &esdc->esdcfg1;
	75	ctl_reg = &esdc->esdctl1;
	76	break;
	77	default:
	78	return;
	79	}
	80
81	/* Initialize MISC register for DDR2 */
82	val = ESDC_MISC_RST \| ESDC_MISC_MDDR_EN \| ESDC_MISC_MDDR_DL_RST \|
83	ESDC_MISC_DDR_EN \| ESDC_MISC_DDR2_EN;
84	writel(val, &esdc->esdmisc);
85	val &= ~(ESDC_MISC_RST \| ESDC_MISC_MDDR_DL_RST);
86	writel(val, &esdc->esdmisc);
87
88	/*
89	* according to DDR2 specs, wait a while before
90	* the PRECHARGE_ALL command
91	*/
92	dram_wait(0x20000);
93
94	/* Load DDR2 config and timing */
95	writel(ESDCTL_DDR2_CONFIG, cfg_reg);
96
97	/* Precharge ALL */
98	writel(ESDCTL_0x92220000,
99	ctl_reg);
100	writel(0xda, start_address + ESDCTL_PRECHARGE);
101
102	/* Load mode */
103	writel(ESDCTL_0xB2220000,
104	ctl_reg);
105	writeb(0xda, start_address + ESDCTL_DDR2_EMR2); /* EMRS2 */
106	writeb(0xda, start_address + ESDCTL_DDR2_EMR3); /* EMRS3 */
107	writeb(0xda, start_address + ESDCTL_DDR2_EN_DLL); /* Enable DLL */
108	writeb(0xda, start_address + ESDCTL_DDR2_RESET_DLL); /* Reset DLL */
109
110	/* Precharge ALL */
111	writel(ESDCTL_0x92220000,
112	ctl_reg);
113	writel(0xda, start_address + ESDCTL_PRECHARGE);
114
115	/* Set mode auto refresh : at least two refresh are required */
116	writel(ESDCTL_0xA2220000,
117	ctl_reg);
118	writel(0xda, start_address);
119	writel(0xda, start_address);
120
121	writel(ESDCTL_0xB2220000,
122	ctl_reg);
123	writeb(0xda, start_address + ESDCTL_DDR2_MR);
124	writeb(0xda, start_address + ESDCTL_DDR2_OCD_DEFAULT);
125
126	/* OCD mode exit */
127	writeb(0xda, start_address + ESDCTL_DDR2_EN_DLL); /* Enable DLL */
128
129	/* Set normal mode */
130	writel(ESDCTL_0x82228080,
131	ctl_reg);
132
133	dram_wait(0x20000);
134
135	/* Do not set delay lines, only for MDDR */
136	}
137
138	static void board_setup_sdram(void)
139	{
140	struct esdc_regs esdc = (struct esdc_regs )ESDCTL_BASE_ADDR;
141
142	/* Initialize with default values both CSD0/1 */
143	writel(0x2000, &esdc->esdctl0);
144	writel(0x2000, &esdc->esdctl1);
145
fda241d5	146	board_setup_sdram_bank(CSD0_BASE_ADDR);
deb53483 SB	147	}
	148
	149	static void setup_iomux_uart3(void)
	150	{
686e1448 BT	151	static const iomux_v3_cfg_t uart3_pads[] = {
	152	MX35_PAD_RTS2__UART3_RXD_MUX,
	153	MX35_PAD_CTS2__UART3_TXD_MUX,
	154	};
	155
	156	imx_iomux_v3_setup_multiple_pads(uart3_pads, ARRAY_SIZE(uart3_pads));
deb53483 SB	157	}
deb53483 SB	158
686e1448 BT	159	#define I2C_PAD_CTRL (PAD_CTL_HYS \| PAD_CTL_PUS_100K_DOWN \| PAD_CTL_ODE)
686e1448 BT	160
deb53483 SB	161	static void setup_iomux_i2c(void)
deb53483 SB	162	{
686e1448 BT	163	static const iomux_v3_cfg_t i2c_pads[] = {
	164	NEW_PAD_CTRL(MX35_PAD_I2C1_CLK__I2C1_SCL, I2C_PAD_CTRL),
	165	NEW_PAD_CTRL(MX35_PAD_I2C1_DAT__I2C1_SDA, I2C_PAD_CTRL),
deb53483	166
686e1448 BT	167	NEW_PAD_CTRL(MX35_PAD_TX3_RX2__I2C3_SCL, I2C_PAD_CTRL),
	168	NEW_PAD_CTRL(MX35_PAD_TX2_RX3__I2C3_SDA, I2C_PAD_CTRL),
	169	};
deb53483	170
686e1448	171	imx_iomux_v3_setup_multiple_pads(i2c_pads, ARRAY_SIZE(i2c_pads));
deb53483 SB	172	}
	173
	174
	175	static void setup_iomux_spi(void)
	176	{
686e1448 BT	177	static const iomux_v3_cfg_t spi_pads[] = {
	178	MX35_PAD_CSPI1_MOSI__CSPI1_MOSI,
	179	MX35_PAD_CSPI1_MISO__CSPI1_MISO,
	180	MX35_PAD_CSPI1_SS0__CSPI1_SS0,
	181	MX35_PAD_CSPI1_SS1__CSPI1_SS1,
	182	MX35_PAD_CSPI1_SCLK__CSPI1_SCLK,
	183	};
	184
	185	imx_iomux_v3_setup_multiple_pads(spi_pads, ARRAY_SIZE(spi_pads));
deb53483 SB	186	}
	187
	188	static void setup_iomux_fec(void)
	189	{
686e1448 BT	190	static const iomux_v3_cfg_t fec_pads[] = {
	191	MX35_PAD_FEC_TX_CLK__FEC_TX_CLK,
	192	MX35_PAD_FEC_RX_CLK__FEC_RX_CLK,
	193	MX35_PAD_FEC_RX_DV__FEC_RX_DV,
	194	MX35_PAD_FEC_COL__FEC_COL,
	195	MX35_PAD_FEC_RDATA0__FEC_RDATA_0,
	196	MX35_PAD_FEC_TDATA0__FEC_TDATA_0,
	197	MX35_PAD_FEC_TX_EN__FEC_TX_EN,
	198	MX35_PAD_FEC_MDC__FEC_MDC,
	199	MX35_PAD_FEC_MDIO__FEC_MDIO,
	200	MX35_PAD_FEC_TX_ERR__FEC_TX_ERR,
	201	MX35_PAD_FEC_RX_ERR__FEC_RX_ERR,
	202	MX35_PAD_FEC_CRS__FEC_CRS,
	203	MX35_PAD_FEC_RDATA1__FEC_RDATA_1,
	204	MX35_PAD_FEC_TDATA1__FEC_TDATA_1,
	205	MX35_PAD_FEC_RDATA2__FEC_RDATA_2,
	206	MX35_PAD_FEC_TDATA2__FEC_TDATA_2,
	207	MX35_PAD_FEC_RDATA3__FEC_RDATA_3,
	208	MX35_PAD_FEC_TDATA3__FEC_TDATA_3,
	209	};
deb53483	210
686e1448 BT	211	/* setup pins for FEC */
686e1448 BT	212	imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads));
deb53483 SB	213	}
	214
	215	int board_early_init_f(void)
	216	{
	217	struct ccm_regs *ccm =
	218	(struct ccm_regs *)IMX_CCM_BASE;
	219
	220	/* setup GPIO3_1 to set HighVCore signal */
686e1448	221	imx_iomux_v3_setup_pad(MX35_PAD_ATA_DA1__GPIO3_1);
deb53483 SB	222	gpio_direction_output(65, 1);
	223
	224	/* initialize PLL and clock configuration */
	225	writel(CCM_CCMR_CONFIG, &ccm->ccmr);
	226
	227	writel(CCM_MPLL_532_HZ, &ccm->mpctl);
	228	writel(CCM_PPLL_300_HZ, &ccm->ppctl);
	229
	230	/* Set the core to run at 532 Mhz */
	231	writel(0x00001000, &ccm->pdr0);
	232
	233	/* Set-up RAM */
	234	board_setup_sdram();
	235
	236	/* enable clocks */
	237	writel(readl(&ccm->cgr0) \|
	238	MXC_CCM_CGR0_EMI_MASK \|
34a31bf5	239	MXC_CCM_CGR0_EDIO_MASK \|
deb53483 SB	240	MXC_CCM_CGR0_EPIT1_MASK,
	241	&ccm->cgr0);
	242
	243	writel(readl(&ccm->cgr1) \|
	244	MXC_CCM_CGR1_FEC_MASK \|
	245	MXC_CCM_CGR1_GPIO1_MASK \|
	246	MXC_CCM_CGR1_GPIO2_MASK \|
	247	MXC_CCM_CGR1_GPIO3_MASK \|
	248	MXC_CCM_CGR1_I2C1_MASK \|
	249	MXC_CCM_CGR1_I2C2_MASK \|
	250	MXC_CCM_CGR1_I2C3_MASK,
	251	&ccm->cgr1);
	252
	253	/* Set-up NAND */
	254	__raw_writel(readl(&ccm->rcsr) \| MXC_CCM_RCSR_NFC_FMS, &ccm->rcsr);
	255
	256	/* Set pinmux for the required peripherals */
	257	setup_iomux_uart3();
	258	setup_iomux_i2c();
	259	setup_iomux_fec();
	260	setup_iomux_spi();
	261
	262	return 0;
	263	}
	264
	265	int board_init(void)
	266	{
	267	/* address of boot parameters */
	268	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
	269
	270	return 0;
	271	}
	272
	273	u32 get_board_rev(void)
	274	{
	275	int rev = 0;
	276
	277	return (get_cpu_rev() & ~(0xF << 8)) \| (rev & 0xF) << 8;
	278	}