]>
Commit | Line | Data |
---|---|---|
4dc0ab35 SG |
1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* | |
3 | * Copyright 2019 Google LLC | |
4 | * | |
5 | * Portions taken from coreboot | |
6 | */ | |
7 | ||
d678a59d | 8 | #include <common.h> |
4dc0ab35 SG |
9 | #include <dm.h> |
10 | #include <ec_commands.h> | |
691d719d | 11 | #include <init.h> |
4dc0ab35 SG |
12 | #include <log.h> |
13 | #include <spi_flash.h> | |
14 | #include <spl.h> | |
15 | #include <syscon.h> | |
3cabcf96 | 16 | #include <acpi/acpi_s3.h> |
4dc0ab35 SG |
17 | #include <asm/cpu.h> |
18 | #include <asm/cpu_common.h> | |
19 | #include <asm/cpu_x86.h> | |
20 | #include <asm/fast_spi.h> | |
401d1c4f | 21 | #include <asm/global_data.h> |
4dc0ab35 SG |
22 | #include <asm/intel_pinctrl.h> |
23 | #include <asm/intel_regs.h> | |
24 | #include <asm/io.h> | |
25 | #include <asm/msr.h> | |
26 | #include <asm/mtrr.h> | |
27 | #include <asm/pci.h> | |
28 | #include <asm/arch/cpu.h> | |
29 | #include <asm/arch/gpio.h> | |
30 | #include <asm/arch/iomap.h> | |
31 | #include <asm/arch/lpc.h> | |
32 | #include <asm/arch/pch.h> | |
33 | #include <asm/arch/systemagent.h> | |
4dc0ab35 SG |
34 | #include <asm/fsp2/fsp_api.h> |
35 | #include <linux/sizes.h> | |
36 | #include <power/acpi_pmc.h> | |
37 | ||
4dc0ab35 SG |
38 | static int fast_spi_cache_bios_region(void) |
39 | { | |
40 | uint map_size, offset; | |
41 | ulong map_base, base; | |
42 | int ret; | |
43 | ||
44 | ret = fast_spi_early_init(PCH_DEV_SPI, IOMAP_SPI_BASE); | |
45 | if (ret) | |
46 | return log_msg_ret("early_init", ret); | |
47 | ||
48 | ret = fast_spi_get_bios_mmap(PCH_DEV_SPI, &map_base, &map_size, | |
49 | &offset); | |
50 | if (ret) | |
51 | return log_msg_ret("get_mmap", ret); | |
52 | ||
53 | base = SZ_4G - map_size; | |
54 | mtrr_set_next_var(MTRR_TYPE_WRPROT, base, map_size); | |
55 | log_debug("BIOS cache base=%lx, size=%x\n", base, (uint)map_size); | |
56 | ||
57 | return 0; | |
58 | } | |
59 | ||
4dc0ab35 SG |
60 | static void google_chromeec_ioport_range(uint *out_basep, uint *out_sizep) |
61 | { | |
62 | uint base; | |
63 | uint size; | |
64 | ||
65 | if (IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC_MEC)) { | |
66 | base = MEC_EMI_BASE; | |
67 | size = MEC_EMI_SIZE; | |
68 | } else { | |
69 | base = EC_HOST_CMD_REGION0; | |
70 | size = 2 * EC_HOST_CMD_REGION_SIZE; | |
71 | /* Make sure MEMMAP region follows host cmd region */ | |
72 | assert(base + size == EC_LPC_ADDR_MEMMAP); | |
73 | size += EC_MEMMAP_SIZE; | |
74 | } | |
75 | ||
76 | *out_basep = base; | |
77 | *out_sizep = size; | |
78 | } | |
79 | ||
80 | static void early_ec_init(void) | |
81 | { | |
82 | uint base, size; | |
83 | ||
84 | /* | |
85 | * Set up LPC decoding for the Chrome OS EC I/O port ranges: | |
86 | * - Ports 62/66, 60/64, and 200->208 | |
87 | * - Chrome OS EC communication I/O ports | |
88 | */ | |
89 | lpc_enable_fixed_io_ranges(LPC_IOE_EC_62_66 | LPC_IOE_KBC_60_64 | | |
90 | LPC_IOE_LGE_200); | |
91 | google_chromeec_ioport_range(&base, &size); | |
92 | lpc_open_pmio_window(base, size); | |
93 | } | |
94 | ||
95 | static int arch_cpu_init_tpl(void) | |
96 | { | |
97 | struct udevice *pmc, *sa, *p2sb, *serial, *spi, *lpc; | |
98 | int ret; | |
99 | ||
100 | ret = uclass_first_device_err(UCLASS_ACPI_PMC, &pmc); | |
101 | if (ret) | |
102 | return log_msg_ret("PMC", ret); | |
103 | ||
104 | /* Clear global reset promotion bit */ | |
105 | ret = pmc_global_reset_set_enable(pmc, false); | |
106 | if (ret) | |
107 | return log_msg_ret("disable global reset", ret); | |
108 | ||
109 | enable_pm_timer_emulation(pmc); | |
110 | ||
111 | ret = uclass_first_device_err(UCLASS_P2SB, &p2sb); | |
112 | if (ret) | |
113 | return log_msg_ret("p2sb", ret); | |
114 | ret = uclass_first_device_err(UCLASS_NORTHBRIDGE, &sa); | |
115 | if (ret) | |
116 | return log_msg_ret("northbridge", ret); | |
117 | gd->baudrate = CONFIG_BAUDRATE; | |
118 | ret = uclass_first_device_err(UCLASS_SERIAL, &serial); | |
119 | if (ret) | |
120 | return log_msg_ret("serial", ret); | |
121 | if (CONFIG_IS_ENABLED(SPI_FLASH_SUPPORT)) { | |
122 | ret = uclass_first_device_err(UCLASS_SPI, &spi); | |
123 | if (ret) | |
124 | return log_msg_ret("SPI", ret); | |
125 | } else { | |
126 | /* Alternative code if we don't have SPI in TPL */ | |
127 | if (IS_ENABLED(CONFIG_APL_BOOT_FROM_FAST_SPI_FLASH)) | |
128 | printf("Warning: Enable APL_SPI_FLASHBOOT to use SPI-flash driver in TPL"); | |
129 | ret = fast_spi_cache_bios_region(); | |
130 | if (ret) | |
131 | return log_msg_ret("BIOS cache", ret); | |
132 | } | |
133 | ret = pmc_disable_tco(pmc); | |
134 | if (ret) | |
135 | return log_msg_ret("disable TCO", ret); | |
136 | ret = pmc_gpe_init(pmc); | |
137 | if (ret) | |
138 | return log_msg_ret("pmc_gpe", ret); | |
139 | ret = uclass_first_device_err(UCLASS_LPC, &lpc); | |
140 | if (ret) | |
141 | return log_msg_ret("lpc", ret); | |
142 | ||
143 | early_ec_init(); | |
144 | ||
145 | return 0; | |
146 | } | |
147 | ||
148 | /* | |
149 | * Enables several BARs and devices which are needed for memory init | |
150 | * - MCH_BASE_ADDR is needed in order to talk to the memory controller | |
151 | * - HPET is enabled because FSP wants to store a pointer to global data in the | |
152 | * HPET comparator register | |
153 | */ | |
154 | static int arch_cpu_init_spl(void) | |
155 | { | |
156 | struct udevice *pmc, *p2sb; | |
157 | int ret; | |
158 | ||
159 | ret = uclass_first_device_err(UCLASS_ACPI_PMC, &pmc); | |
160 | if (ret) | |
161 | return log_msg_ret("Could not probe PMC", ret); | |
162 | ret = uclass_first_device_err(UCLASS_P2SB, &p2sb); | |
163 | if (ret) | |
164 | return log_msg_ret("Cannot set up p2sb", ret); | |
165 | ||
166 | lpc_io_setup_comm_a_b(); | |
167 | ||
168 | /* TODO(sjg@chromium.org): Enable upper RTC bank here */ | |
169 | ||
170 | ret = pmc_init(pmc); | |
171 | if (ret < 0) | |
172 | return log_msg_ret("Could not init PMC", ret); | |
ef5f5f6c SG |
173 | if (IS_ENABLED(CONFIG_HAVE_ACPI_RESUME)) { |
174 | ret = pmc_prev_sleep_state(pmc); | |
175 | if (ret < 0) | |
176 | return log_msg_ret("Could not get PMC sleep state", | |
177 | ret); | |
178 | gd->arch.prev_sleep_state = ret; | |
179 | } | |
4dc0ab35 SG |
180 | |
181 | return 0; | |
182 | } | |
183 | ||
184 | int arch_cpu_init(void) | |
185 | { | |
186 | int ret = 0; | |
187 | ||
188 | if (spl_phase() == PHASE_TPL) | |
189 | ret = arch_cpu_init_tpl(); | |
190 | else if (spl_phase() == PHASE_SPL) | |
191 | ret = arch_cpu_init_spl(); | |
192 | if (ret) | |
193 | printf("%s: Error %d\n", __func__, ret); | |
194 | ||
195 | return ret; | |
196 | } |