1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2010, 2018
4 * Allied Telesis <www.alliedtelesis.com>
5 */
6
7 #include <common.h>
8 #include <init.h>
9 #include <net.h>
10 #include <asm/global_data.h>
11 #include <linux/bitops.h>
12 #include <linux/delay.h>
13 #include <linux/io.h>
14 #include <miiphy.h>
15 #include <netdev.h>
16 #include <status_led.h>
17 #include <asm/arch/cpu.h>
18 #include <asm/arch/soc.h>
19 #include <asm/arch/mpp.h>
20 #include <asm/arch/gpio.h>
21
22 /* Note: GPIO differences between specific boards
23 *
24 * We're trying to avoid having multiple build targets for all the Kirkwood
25 * based boards one area where things tend to differ is GPIO usage. For the
26 * most part the GPIOs driven by the bootloader are similar enough in function
27 * that there is no harm in driving them.
28 *
29 * XZ4 XS6 XS16 GS24A GT40 GP24A GT24A
30 * GPIO39 - INT(<) NC MUX_RST_N(>) NC POE_DIS_N(>) NC
31 */
32
33 #define SBX81LIFKW_OE_LOW ~(BIT(31) | BIT(30) | BIT(28) | BIT(27) | \
34 BIT(18) | BIT(17) | BIT(13) | BIT(12) | \
35 BIT(10))
36 #define SBX81LIFKW_OE_HIGH ~(BIT(0) | BIT(1) | BIT(7))
37 #define SBX81LIFKW_OE_VAL_LOW (BIT(31) | BIT(30) | BIT(28) | BIT(27))
38 #define SBX81LIFKW_OE_VAL_HIGH (BIT(0) | BIT(1))
39
40 #define MV88E6097_RESET 27
41
42 DECLARE_GLOBAL_DATA_PTR;
43
44 struct led {
45 u32 reg;
46 u32 value;
47 u32 mask;
48 };
49
50 struct led amber_solid = {
51 MVEBU_GPIO0_BASE,
52 BIT(10),
53 BIT(18) | BIT(10)
54 };
55
56 struct led green_solid = {
57 MVEBU_GPIO0_BASE,
58 BIT(18) | BIT(10),
59 BIT(18) | BIT(10)
60 };
61
62 struct led amber_flash = {
63 MVEBU_GPIO0_BASE,
64 0,
65 BIT(18) | BIT(10)
66 };
67
68 struct led green_flash = {
69 MVEBU_GPIO0_BASE,
70 BIT(18),
71 BIT(18) | BIT(10)
72 };
73
status_led_set(struct led * led)74 static void status_led_set(struct led *led)
75 {
76 clrsetbits_le32(led->reg, led->mask, led->value);
77 }
78
board_early_init_f(void)79 int board_early_init_f(void)
80 {
81 /*
82 * default gpio configuration
83 * There are maximum 64 gpios controlled through 2 sets of registers
84 * the below configuration configures mainly initial LED status
85 */
86 mvebu_config_gpio(SBX81LIFKW_OE_VAL_LOW,
87 SBX81LIFKW_OE_VAL_HIGH,
88 SBX81LIFKW_OE_LOW, SBX81LIFKW_OE_HIGH);
89
90 /* Multi-Purpose Pins Functionality configuration */
91 static const u32 kwmpp_config[] = {
92 MPP0_SPI_SCn,
93 MPP1_SPI_MOSI,
94 MPP2_SPI_SCK,
95 MPP3_SPI_MISO,
96 MPP4_UART0_RXD,
97 MPP5_UART0_TXD,
98 MPP6_SYSRST_OUTn,
99 MPP7_PEX_RST_OUTn,
100 MPP8_TW_SDA,
101 MPP9_TW_SCK,
102 MPP10_GPO,
103 MPP11_GPIO,
104 MPP12_GPO,
105 MPP13_GPIO,
106 MPP14_GPIO,
107 MPP15_UART0_RTS,
108 MPP16_UART0_CTS,
109 MPP17_GPIO,
110 MPP18_GPO,
111 MPP19_GPO,
112 MPP20_GPIO,
113 MPP21_GPIO,
114 MPP22_GPIO,
115 MPP23_GPIO,
116 MPP24_GPIO,
117 MPP25_GPIO,
118 MPP26_GPIO,
119 MPP27_GPIO,
120 MPP28_GPIO,
121 MPP29_GPIO,
122 MPP30_GPIO,
123 MPP31_GPIO,
124 MPP32_GPIO,
125 MPP33_GPIO,
126 MPP34_GPIO,
127 MPP35_GPIO,
128 MPP36_GPIO,
129 MPP37_GPIO,
130 MPP38_GPIO,
131 MPP39_GPIO,
132 MPP40_GPIO,
133 MPP41_GPIO,
134 MPP42_GPIO,
135 MPP43_GPIO,
136 MPP44_GPIO,
137 MPP45_GPIO,
138 MPP46_GPIO,
139 MPP47_GPIO,
140 MPP48_GPIO,
141 MPP49_GPIO,
142 0
143 };
144
145 kirkwood_mpp_conf(kwmpp_config, NULL);
146 return 0;
147 }
148
board_init(void)149 int board_init(void)
150 {
151 /* Power-down unused subsystems. The required
152 * subsystems are:
153 *
154 * GE0 b0
155 * PEX0 PHY b1
156 * PEX0.0 b2
157 * TSU b5
158 * SDRAM b6
159 * RUNIT b7
160 */
161 writel((BIT(0) | BIT(1) | BIT(2) |
162 BIT(5) | BIT(6) | BIT(7)),
163 KW_CPU_REG_BASE + 0x1c);
164
165 /* address of boot parameters */
166 gd->bd->bi_boot_params = mvebu_sdram_bar(0) + 0x100;
167
168 status_led_set(&amber_solid);
169
170 return 0;
171 }
172
173 #ifdef CONFIG_RESET_PHY_R
174 /* automatically defined by kirkwood config.h */
reset_phy(void)175 void reset_phy(void)
176 {
177 }
178 #endif
179
180 #ifdef CONFIG_MV88E61XX_SWITCH
mv88e61xx_hw_reset(struct phy_device * phydev)181 int mv88e61xx_hw_reset(struct phy_device *phydev)
182 {
183 /* Ensure the 88e6097 gets at least 10ms Reset
184 */
185 kw_gpio_set_value(MV88E6097_RESET, 0);
186 mdelay(20);
187 kw_gpio_set_value(MV88E6097_RESET, 1);
188 mdelay(20);
189
190 phydev->advertising = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
191
192 return 0;
193 }
194 #endif
195
196 #ifdef CONFIG_MISC_INIT_R
misc_init_r(void)197 int misc_init_r(void)
198 {
199 status_led_set(&green_flash);
200
201 return 0;
202 }
203 #endif
204