1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (C) 2018
4 * Lukasz Majewski, DENX Software Engineering, lukma@denx.de
5 */
6
7 #include <common.h>
8 #include <init.h>
9 #include <asm/global_data.h>
10 #include <asm/io.h>
11 #include <asm/arch/imx-regs.h>
12 #include <asm/arch/sys_proto.h>
13 #include <asm/arch/crm_regs.h>
14 #include <asm/arch/clock.h>
15 #include <asm/arch/iomux-mx53.h>
16 #include <asm/arch/clock.h>
17 #include <asm/gpio.h>
18 #include <env.h>
19 #include <power/pmic.h>
20 #include <fsl_pmic.h>
21 #include <bootstage.h>
22 #include "kp_id_rev.h"
23
24 #define BOOSTER_OFF IMX_GPIO_NR(2, 23)
25 #define LCD_BACKLIGHT IMX_GPIO_NR(1, 1)
26 #define KEY1 IMX_GPIO_NR(2, 26)
27 #define LED_RED IMX_GPIO_NR(3, 28)
28
29 DECLARE_GLOBAL_DATA_PTR;
30
dram_init(void)31 int dram_init(void)
32 {
33 u32 size;
34
35 size = get_ram_size((void *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE);
36 gd->ram_size = size;
37
38 return 0;
39 }
40
dram_init_banksize(void)41 int dram_init_banksize(void)
42 {
43 gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
44 gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
45
46 return 0;
47 }
48
power_init(void)49 static int power_init(void)
50 {
51 struct udevice *dev;
52 int ret;
53
54 ret = pmic_get("mc34708@8", &dev);
55 if (ret) {
56 printf("%s: mc34708 not found !\n", __func__);
57 return ret;
58 }
59
60 /* Set VDDGP to 1.110V for 800 MHz on SW1 */
61 pmic_clrsetbits(dev, REG_SW_0, SWx_VOLT_MASK_MC34708,
62 SWx_1_110V_MC34708);
63
64 /* Set VCC as 1.30V on SW2 */
65 pmic_clrsetbits(dev, REG_SW_1, SWx_VOLT_MASK_MC34708,
66 SWx_1_300V_MC34708);
67
68 /* Set global reset timer to 4s */
69 pmic_clrsetbits(dev, REG_POWER_CTL2, TIMER_MASK_MC34708,
70 TIMER_4S_MC34708);
71
72 return ret;
73 }
74
setup_clocks(void)75 static void setup_clocks(void)
76 {
77 int ret;
78 u32 ref_clk = MXC_HCLK;
79 /*
80 * CPU clock set to 800MHz and DDR to 400MHz
81 */
82 ret = mxc_set_clock(ref_clk, 800, MXC_ARM_CLK);
83 if (ret)
84 printf("CPU: Switch CPU clock to 800MHZ failed\n");
85
86 ret = mxc_set_clock(ref_clk, 400, MXC_PERIPH_CLK);
87 ret |= mxc_set_clock(ref_clk, 400, MXC_DDR_CLK);
88 if (ret)
89 printf("CPU: Switch DDR clock to 400MHz failed\n");
90 }
91
setup_ups(void)92 static void setup_ups(void)
93 {
94 gpio_request(BOOSTER_OFF, "BOOSTER_OFF");
95 gpio_direction_output(BOOSTER_OFF, 0);
96 }
97
board_early_init_f(void)98 int board_early_init_f(void)
99 {
100 return 0;
101 }
102
103 /*
104 * Do not overwrite the console
105 * Use always serial for U-Boot console
106 */
overwrite_console(void)107 int overwrite_console(void)
108 {
109 return 1;
110 }
111
board_init(void)112 int board_init(void)
113 {
114 gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
115
116 return 0;
117 }
118
board_disable_display(void)119 void board_disable_display(void)
120 {
121 gpio_request(LCD_BACKLIGHT, "LCD_BACKLIGHT");
122 gpio_direction_output(LCD_BACKLIGHT, 0);
123 }
124
board_misc_setup(void)125 void board_misc_setup(void)
126 {
127 gpio_request(KEY1, "KEY1_GPIO");
128 gpio_direction_input(KEY1);
129
130 if (gpio_get_value(KEY1))
131 env_set("key1", "off");
132 else
133 env_set("key1", "on");
134 }
135
board_late_init(void)136 int board_late_init(void)
137 {
138 int ret = 0;
139
140 board_disable_display();
141 setup_ups();
142
143 if (!power_init())
144 setup_clocks();
145
146 ret = read_eeprom();
147 if (ret)
148 printf("Error %d reading EEPROM content!\n", ret);
149
150 show_eeprom();
151 read_board_id();
152
153 board_misc_setup();
154
155 return ret;
156 }
157
158 #define GPIO_DR 0x0
159 #define GPIO_GDIR 0x4
160 #define GPIO_ALT1 0x1
161 #define GPIO5_BASE 0x53FDC000
162 #define IOMUXC_EIM_WAIT 0x53FA81E4
163 /* Green LED: GPIO5_0 */
164 #define GPIO_GREEN BIT(0)
165
show_boot_progress(int status)166 void show_boot_progress(int status)
167 {
168 /*
169 * This BOOTSTAGE_ID is called at very early stage of execution. DM gpio
170 * is not yet initialized.
171 */
172 if (status == BOOTSTAGE_ID_START_UBOOT_F) {
173 /*
174 * After ROM execution the EIM_WAIT PAD is set as ALT0
175 * (according to RM it shall be ALT1 after reset). To use it as
176 * GPIO we need to set it to ALT1.
177 */
178 setbits_le32(((uint32_t *)(IOMUXC_EIM_WAIT)), GPIO_ALT1);
179
180 /* Configure green LED GPIO pin direction */
181 setbits_le32(((uint32_t *)(GPIO5_BASE + GPIO_GDIR)),
182 GPIO_GREEN);
183 /* Turn on green LED */
184 setbits_le32(((uint32_t *)(GPIO5_BASE + GPIO_DR)), GPIO_GREEN);
185 }
186
187 /*
188 * This BOOTSTAGE_ID is called just before handling execution to kernel
189 * - i.e. gpio subsystem is already initialized
190 */
191 if (status == BOOTSTAGE_ID_BOOTM_HANDOFF) {
192 /*
193 * Off green LED - the same approach - i.e. non dm gpio
194 * (*bits_le32) is used as in the very early stage.
195 */
196 clrbits_le32(((uint32_t *)(GPIO5_BASE + GPIO_DR)),
197 GPIO_GREEN);
198
199 /*
200 * On red LED
201 */
202 gpio_request(LED_RED, "LED_RED_ERROR");
203 gpio_direction_output(LED_RED, 1);
204 }
205 }
206