xref: /openbmc/u-boot/board/CarMediaLab/flea3/flea3.c (revision 5c8fd32b)
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright (C) 2007, Guennadi Liakhovetski <lg@denx.de>
4  *
5  * (C) Copyright 2008-2010 Freescale Semiconductor, Inc.
6  *
7  * Copyright (C) 2011, Stefano Babic <sbabic@denx.de>
8  */
9 
10 #include <common.h>
11 #include <asm/io.h>
12 #include <linux/errno.h>
13 #include <asm/arch/imx-regs.h>
14 #include <asm/arch/crm_regs.h>
15 #include <asm/arch/iomux-mx35.h>
16 #include <i2c.h>
17 #include <linux/types.h>
18 #include <asm/gpio.h>
19 #include <asm/arch/sys_proto.h>
20 #include <netdev.h>
21 #include <fdt_support.h>
22 #include <mtd_node.h>
23 #include <jffs2/load_kernel.h>
24 
25 #ifndef CONFIG_BOARD_EARLY_INIT_F
26 #error "CONFIG_BOARD_EARLY_INIT_F must be set for this board"
27 #endif
28 
29 #define CCM_CCMR_CONFIG		0x003F4208
30 
31 #define ESDCTL_DDR2_CONFIG	0x007FFC3F
32 
33 static inline void dram_wait(unsigned int count)
34 {
35 	volatile unsigned int wait = count;
36 
37 	while (wait--)
38 		;
39 }
40 
41 DECLARE_GLOBAL_DATA_PTR;
42 
43 int dram_init(void)
44 {
45 	gd->ram_size = get_ram_size((long *)PHYS_SDRAM_1,
46 		PHYS_SDRAM_1_SIZE);
47 
48 	return 0;
49 }
50 
51 static void board_setup_sdram(void)
52 {
53 	struct esdc_regs *esdc = (struct esdc_regs *)ESDCTL_BASE_ADDR;
54 
55 	/* Initialize with default values both CSD0/1 */
56 	writel(0x2000, &esdc->esdctl0);
57 	writel(0x2000, &esdc->esdctl1);
58 
59 
60 	mx3_setup_sdram_bank(CSD0_BASE_ADDR, ESDCTL_DDR2_CONFIG,
61 			     13, 10, 2, 0x8080);
62 }
63 
64 static void setup_iomux_uart3(void)
65 {
66 	static const iomux_v3_cfg_t uart3_pads[] = {
67 		MX35_PAD_RTS2__UART3_RXD_MUX,
68 		MX35_PAD_CTS2__UART3_TXD_MUX,
69 	};
70 
71 	imx_iomux_v3_setup_multiple_pads(uart3_pads, ARRAY_SIZE(uart3_pads));
72 }
73 
74 #define I2C_PAD_CTRL	(PAD_CTL_HYS | PAD_CTL_PUS_100K_DOWN | PAD_CTL_ODE)
75 
76 static void setup_iomux_i2c(void)
77 {
78 	static const iomux_v3_cfg_t i2c_pads[] = {
79 		NEW_PAD_CTRL(MX35_PAD_I2C1_CLK__I2C1_SCL, I2C_PAD_CTRL),
80 		NEW_PAD_CTRL(MX35_PAD_I2C1_DAT__I2C1_SDA, I2C_PAD_CTRL),
81 
82 		NEW_PAD_CTRL(MX35_PAD_TX3_RX2__I2C3_SCL, I2C_PAD_CTRL),
83 		NEW_PAD_CTRL(MX35_PAD_TX2_RX3__I2C3_SDA, I2C_PAD_CTRL),
84 	};
85 
86 	imx_iomux_v3_setup_multiple_pads(i2c_pads, ARRAY_SIZE(i2c_pads));
87 }
88 
89 
90 static void setup_iomux_spi(void)
91 {
92 	static const iomux_v3_cfg_t spi_pads[] = {
93 		MX35_PAD_CSPI1_MOSI__CSPI1_MOSI,
94 		MX35_PAD_CSPI1_MISO__CSPI1_MISO,
95 		MX35_PAD_CSPI1_SS0__CSPI1_SS0,
96 		MX35_PAD_CSPI1_SS1__CSPI1_SS1,
97 		MX35_PAD_CSPI1_SCLK__CSPI1_SCLK,
98 	};
99 
100 	imx_iomux_v3_setup_multiple_pads(spi_pads, ARRAY_SIZE(spi_pads));
101 }
102 
103 static void setup_iomux_fec(void)
104 {
105 	static const iomux_v3_cfg_t fec_pads[] = {
106 		MX35_PAD_FEC_TX_CLK__FEC_TX_CLK,
107 		MX35_PAD_FEC_RX_CLK__FEC_RX_CLK,
108 		MX35_PAD_FEC_RX_DV__FEC_RX_DV,
109 		MX35_PAD_FEC_COL__FEC_COL,
110 		MX35_PAD_FEC_RDATA0__FEC_RDATA_0,
111 		MX35_PAD_FEC_TDATA0__FEC_TDATA_0,
112 		MX35_PAD_FEC_TX_EN__FEC_TX_EN,
113 		MX35_PAD_FEC_MDC__FEC_MDC,
114 		MX35_PAD_FEC_MDIO__FEC_MDIO,
115 		MX35_PAD_FEC_TX_ERR__FEC_TX_ERR,
116 		MX35_PAD_FEC_RX_ERR__FEC_RX_ERR,
117 		MX35_PAD_FEC_CRS__FEC_CRS,
118 		MX35_PAD_FEC_RDATA1__FEC_RDATA_1,
119 		MX35_PAD_FEC_TDATA1__FEC_TDATA_1,
120 		MX35_PAD_FEC_RDATA2__FEC_RDATA_2,
121 		MX35_PAD_FEC_TDATA2__FEC_TDATA_2,
122 		MX35_PAD_FEC_RDATA3__FEC_RDATA_3,
123 		MX35_PAD_FEC_TDATA3__FEC_TDATA_3,
124 		/* GPIO used to power off ethernet */
125 		MX35_PAD_STXFS4__GPIO2_31,
126 	};
127 
128 	/* setup pins for FEC */
129 	imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads));
130 }
131 
132 int board_early_init_f(void)
133 {
134 	struct ccm_regs *ccm =
135 		(struct ccm_regs *)IMX_CCM_BASE;
136 
137 	/* setup GPIO3_1 to set HighVCore signal */
138 	imx_iomux_v3_setup_pad(MX35_PAD_ATA_DA1__GPIO3_1);
139 	gpio_direction_output(65, 1);
140 
141 	/* initialize PLL and clock configuration */
142 	writel(CCM_CCMR_CONFIG, &ccm->ccmr);
143 
144 	writel(CCM_MPLL_532_HZ, &ccm->mpctl);
145 	writel(CCM_PPLL_300_HZ, &ccm->ppctl);
146 
147 	/* Set the core to run at 532 Mhz */
148 	writel(0x00001000, &ccm->pdr0);
149 
150 	/* Set-up RAM */
151 	board_setup_sdram();
152 
153 	/* enable clocks */
154 	writel(readl(&ccm->cgr0) |
155 		MXC_CCM_CGR0_EMI_MASK |
156 		MXC_CCM_CGR0_EDIO_MASK |
157 		MXC_CCM_CGR0_EPIT1_MASK,
158 		&ccm->cgr0);
159 
160 	writel(readl(&ccm->cgr1) |
161 		MXC_CCM_CGR1_FEC_MASK |
162 		MXC_CCM_CGR1_GPIO1_MASK |
163 		MXC_CCM_CGR1_GPIO2_MASK |
164 		MXC_CCM_CGR1_GPIO3_MASK |
165 		MXC_CCM_CGR1_I2C1_MASK |
166 		MXC_CCM_CGR1_I2C2_MASK |
167 		MXC_CCM_CGR1_I2C3_MASK,
168 		&ccm->cgr1);
169 
170 	/* Set-up NAND */
171 	__raw_writel(readl(&ccm->rcsr) | MXC_CCM_RCSR_NFC_FMS, &ccm->rcsr);
172 
173 	/* Set pinmux for the required peripherals */
174 	setup_iomux_uart3();
175 	setup_iomux_i2c();
176 	setup_iomux_fec();
177 	setup_iomux_spi();
178 
179 	return 0;
180 }
181 
182 int board_init(void)
183 {
184 	/* address of boot parameters */
185 	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
186 
187 	/* Enable power for ethernet */
188 	gpio_direction_output(63, 0);
189 
190 	udelay(2000);
191 
192 	return 0;
193 }
194 
195 u32 get_board_rev(void)
196 {
197 	int rev = 0;
198 
199 	return (get_cpu_rev() & ~(0xF << 8)) | (rev & 0xF) << 8;
200 }
201 
202 /*
203  * called prior to booting kernel or by 'fdt boardsetup' command
204  *
205  */
206 int ft_board_setup(void *blob, bd_t *bd)
207 {
208 	static const struct node_info nodes[] = {
209 		{ "physmap-flash.0", MTD_DEV_TYPE_NOR, },  /* NOR flash */
210 		{ "mxc_nand", MTD_DEV_TYPE_NAND, }, /* NAND flash */
211 	};
212 
213 	if (env_get("fdt_noauto")) {
214 		puts("   Skiping ft_board_setup (fdt_noauto defined)\n");
215 		return 0;
216 	}
217 
218 	fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes));
219 
220 	return 0;
221 }
222