1 /* SPDX-License-Identifier: GPL-2.0-only */
2
3 #include "psp_verstage.h"
4
5 #include <amdblocks/acpimmio.h>
6 #include <amdblocks/aoac.h>
7 #include <amdblocks/espi.h>
8 #include <amdblocks/i2c.h>
9 #include <amdblocks/spi.h>
10 #include <arch/exception.h>
11 #include <arch/hlt.h>
12 #include <arch/io.h>
13 #include <bl_uapp/bl_errorcodes_public.h>
14 #include <bl_uapp/bl_syscall_public.h>
15 #include <console/console.h>
16 #include <device/mmio.h>
17 #include <soc/i2c.h>
18 #include <soc/southbridge.h>
19 #include <stdint.h>
20
i2c3_set_bar(void * bar)21 static void i2c3_set_bar(void *bar)
22 {
23 i2c_set_bar(3, (uintptr_t)bar);
24 }
25
i2c2_set_bar(void * bar)26 static void i2c2_set_bar(void *bar)
27 {
28 i2c_set_bar(2, (uintptr_t)bar);
29 }
30
espi_set_bar(void * bar)31 static void espi_set_bar(void *bar)
32 {
33 espi_update_static_bar((uintptr_t)bar);
34 }
35
iomux_set_bar(void * bar)36 static void iomux_set_bar(void *bar)
37 {
38 acpimmio_iomux = bar;
39 }
40
misc_set_bar(void * bar)41 static void misc_set_bar(void *bar)
42 {
43 acpimmio_misc = bar;
44 }
45
gpio_set_bar(void * bar)46 static void gpio_set_bar(void *bar)
47 {
48 acpimmio_gpio0 = bar;
49 }
50
51 static uintptr_t io_bar;
52
io_set_bar(void * bar)53 static void io_set_bar(void *bar)
54 {
55 io_bar = (uintptr_t)bar;
56 }
57
io_read8(u16 reg)58 u8 io_read8(u16 reg)
59 {
60 return read8p(io_bar + reg);
61 }
62
io_write8(u16 reg,u8 value)63 void io_write8(u16 reg, u8 value)
64 {
65 write8p(io_bar + reg, value);
66 }
67
aoac_set_bar(void * bar)68 static void aoac_set_bar(void *bar)
69 {
70 acpimmio_aoac = bar;
71 }
72
73 static struct {
74 const char *name;
75 struct {
76 enum fch_io_device device;
77 uint32_t arg0;
78 } args;
79 void (*set_bar)(void *bar);
80 void *_bar;
81 } bar_map[] = {
82 {"IOMUX", {FCH_IO_DEVICE_IOMUX}, iomux_set_bar},
83 {"MISC", {FCH_IO_DEVICE_MISC}, misc_set_bar},
84 {"GPIO", {FCH_IO_DEVICE_GPIO}, gpio_set_bar},
85 {"IO", {FCH_IO_DEVICE_IOPORT}, io_set_bar},
86 {"eSPI", {FCH_IO_DEVICE_ESPI}, espi_set_bar},
87 {"I2C2", {FCH_IO_DEVICE_I2C, 2}, i2c2_set_bar},
88 {"I2C3", {FCH_IO_DEVICE_I2C, 3}, i2c3_set_bar},
89 {"SPI", {FCH_IO_DEVICE_SPI}, spi_set_base},
90 {"AOAC", {FCH_IO_DEVICE_AOAC}, aoac_set_bar},
91 };
92
map_spi_rom(void)93 void *map_spi_rom(void)
94 {
95 struct spirom_info spi = {0};
96
97 if (svc_get_spi_rom_info(&spi))
98 printk(BIOS_DEBUG, "Error getting SPI ROM info.\n");
99
100 if (CONFIG(PSP_VERSTAGE_MAP_ENTIRE_SPIROM) && spi.SpiBiosSmnBase != 0) {
101 uintptr_t *addr = NULL;
102
103 if (svc_map_spi_rom(spi.SpiBiosSmnBase, CONFIG_ROM_SIZE, (void **)&addr))
104 printk(BIOS_DEBUG, "Error mapping SPI ROM to address.\n");
105 return addr;
106 }
107 return spi.SpiBiosSmnBase;
108 }
109
map_fch_devices(void)110 static uint32_t map_fch_devices(void)
111 {
112 void *bar;
113 uint32_t err;
114 unsigned int i;
115
116 for (i = 0; i < ARRAY_SIZE(bar_map); ++i) {
117 err = svc_map_fch_dev(bar_map[i].args.device, bar_map[i].args.arg0, 0, &bar);
118 if (err) {
119 printk(BIOS_ERR, "Failed to map %s: %u\n", bar_map[i].name, err);
120 return err;
121 }
122
123 bar_map[i]._bar = bar;
124 bar_map[i].set_bar(bar);
125 }
126
127 return BL_OK;
128 }
129
unmap_fch_devices(void)130 uint32_t unmap_fch_devices(void)
131 {
132 void *bar;
133 uint32_t err, rtn = BL_OK;
134 unsigned int i;
135
136 for (i = 0; i < ARRAY_SIZE(bar_map); ++i) {
137 bar = bar_map[i]._bar;
138 if (!bar)
139 continue;
140
141 err = svc_unmap_fch_dev(bar_map[i].args.device, bar);
142 if (err) {
143 printk(BIOS_ERR, "Failed to unmap %s: %u\n", bar_map[i].name, err);
144 rtn = err;
145 } else {
146 bar_map[i]._bar = NULL;
147 bar_map[i].set_bar(NULL);
148 }
149 }
150
151 return rtn;
152 }
153
verstage_soc_early_init(void)154 uint32_t verstage_soc_early_init(void)
155 {
156 return map_fch_devices();
157 }
158
verstage_soc_espi_init(void)159 void verstage_soc_espi_init(void)
160 {
161 if (!CONFIG(SOC_AMD_COMMON_BLOCK_USE_ESPI))
162 return;
163 printk(BIOS_DEBUG, "Setting up espi\n");
164 espi_setup();
165 }
166
verstage_soc_i2c_init(void)167 void verstage_soc_i2c_init(void)
168 {
169 printk(BIOS_DEBUG, "Setting up i2c\n");
170 i2c_soc_early_init();
171 }
172
verstage_soc_aoac_init(void)173 void verstage_soc_aoac_init(void)
174 {
175 printk(BIOS_DEBUG, "Setting up aoac\n");
176 enable_aoac_devices();
177 }
178
verstage_soc_spi_init(void)179 void verstage_soc_spi_init(void)
180 {
181 printk(BIOS_DEBUG, "Setting up spi\n");
182 fch_spi_config_modes();
183 show_spi_speeds_and_modes();
184 }
185