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2262cfee WD |
1 | /* |
2 | * (C) Copyright 2002 | |
3 | * Sysgo Real-Time Solutions, GmbH <www.elinos.com> | |
4 | * Marius Groeger <mgroeger@sysgo.de> | |
5 | * | |
6 | * Copyright (C) 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl) | |
7 | * | |
1a459660 | 8 | * SPDX-License-Identifier: GPL-2.0+ |
2262cfee WD |
9 | */ |
10 | ||
11 | #include <common.h> | |
12 | #include <command.h> | |
7025b054 SR |
13 | #include <dm/device.h> |
14 | #include <dm/root.h> | |
76539383 | 15 | #include <errno.h> |
0d0ba59c | 16 | #include <fdt_support.h> |
2262cfee | 17 | #include <image.h> |
a31e091a | 18 | #include <u-boot/zlib.h> |
69370d14 | 19 | #include <asm/bootparam.h> |
61643ae6 | 20 | #include <asm/cpu.h> |
2262cfee WD |
21 | #include <asm/byteorder.h> |
22 | #include <asm/zimage.h> | |
0d0ba59c SG |
23 | #ifdef CONFIG_SYS_COREBOOT |
24 | #include <asm/arch/timestamp.h> | |
25 | #endif | |
2262cfee | 26 | |
8b097916 SG |
27 | DECLARE_GLOBAL_DATA_PTR; |
28 | ||
69370d14 GB |
29 | #define COMMAND_LINE_OFFSET 0x9000 |
30 | ||
b7b8410a AG |
31 | __weak void board_quiesce_devices(void) |
32 | { | |
33 | } | |
34 | ||
0d0ba59c SG |
35 | void bootm_announce_and_cleanup(void) |
36 | { | |
37 | printf("\nStarting kernel ...\n\n"); | |
38 | ||
39 | #ifdef CONFIG_SYS_COREBOOT | |
40 | timestamp_add_now(TS_U_BOOT_START_KERNEL); | |
41 | #endif | |
42 | bootstage_mark_name(BOOTSTAGE_ID_BOOTM_HANDOFF, "start_kernel"); | |
43 | #ifdef CONFIG_BOOTSTAGE_REPORT | |
44 | bootstage_report(); | |
cd7c596e | 45 | #endif |
7025b054 SR |
46 | |
47 | /* | |
48 | * Call remove function of all devices with a removal flag set. | |
49 | * This may be useful for last-stage operations, like cancelling | |
50 | * of DMA operation or releasing device internal buffers. | |
51 | */ | |
52 | dm_remove_devices_flags(DM_REMOVE_ACTIVE_ALL); | |
0d0ba59c | 53 | } |
8bde7f77 | 54 | |
0d0ba59c SG |
55 | #if defined(CONFIG_OF_LIBFDT) && !defined(CONFIG_OF_NO_KERNEL) |
56 | int arch_fixup_memory_node(void *blob) | |
57 | { | |
58 | bd_t *bd = gd->bd; | |
59 | int bank; | |
60 | u64 start[CONFIG_NR_DRAM_BANKS]; | |
61 | u64 size[CONFIG_NR_DRAM_BANKS]; | |
62 | ||
63 | for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) { | |
64 | start[bank] = bd->bi_dram[bank].start; | |
65 | size[bank] = bd->bi_dram[bank].size; | |
66 | } | |
67 | ||
68 | return fdt_fixup_memory_banks(blob, start, size, CONFIG_NR_DRAM_BANKS); | |
69 | } | |
70 | #endif | |
49c3a861 | 71 | |
0d0ba59c SG |
72 | /* Subcommand: PREP */ |
73 | static int boot_prep_linux(bootm_headers_t *images) | |
74 | { | |
75 | char *cmd_line_dest = NULL; | |
76 | image_header_t *hdr; | |
77 | int is_zimage = 0; | |
78 | void *data = NULL; | |
79 | size_t len; | |
80 | int ret; | |
81 | ||
82 | #ifdef CONFIG_OF_LIBFDT | |
83 | if (images->ft_len) { | |
84 | debug("using: FDT\n"); | |
85 | if (image_setup_linux(images)) { | |
86 | puts("FDT creation failed! hanging..."); | |
87 | hang(); | |
88 | } | |
89 | } | |
90 | #endif | |
d5934ad7 MB |
91 | if (images->legacy_hdr_valid) { |
92 | hdr = images->legacy_hdr_os; | |
83088afb | 93 | if (image_check_type(hdr, IH_TYPE_MULTI)) { |
0d0ba59c SG |
94 | ulong os_data, os_len; |
95 | ||
d5934ad7 | 96 | /* if multi-part image, we need to get first subimage */ |
83088afb | 97 | image_multi_getimg(hdr, 0, &os_data, &os_len); |
0d0ba59c SG |
98 | data = (void *)os_data; |
99 | len = os_len; | |
d5934ad7 MB |
100 | } else { |
101 | /* otherwise get image data */ | |
0d0ba59c SG |
102 | data = (void *)image_get_data(hdr); |
103 | len = image_get_data_size(hdr); | |
d5934ad7 | 104 | } |
0d0ba59c | 105 | is_zimage = 1; |
d5934ad7 | 106 | #if defined(CONFIG_FIT) |
25475249 | 107 | } else if (images->fit_uname_os && is_zimage) { |
83088afb | 108 | ret = fit_image_get_data(images->fit_hdr_os, |
0d0ba59c SG |
109 | images->fit_noffset_os, |
110 | (const void **)&data, &len); | |
cd7c596e | 111 | if (ret) { |
83088afb | 112 | puts("Can't get image data/size!\n"); |
cd7c596e MB |
113 | goto error; |
114 | } | |
0d0ba59c | 115 | is_zimage = 1; |
d5934ad7 | 116 | #endif |
e644670b WD |
117 | } |
118 | ||
0d0ba59c | 119 | if (is_zimage) { |
76539383 | 120 | ulong load_address; |
0d0ba59c | 121 | char *base_ptr; |
2262cfee | 122 | |
0d0ba59c | 123 | base_ptr = (char *)load_zimage(data, len, &load_address); |
76539383 | 124 | images->os.load = load_address; |
0d0ba59c SG |
125 | cmd_line_dest = base_ptr + COMMAND_LINE_OFFSET; |
126 | images->ep = (ulong)base_ptr; | |
127 | } else if (images->ep) { | |
128 | cmd_line_dest = (void *)images->ep + COMMAND_LINE_OFFSET; | |
129 | } else { | |
2c363cb0 | 130 | printf("## Kernel loading failed (missing x86 kernel setup) ...\n"); |
cd7c596e | 131 | goto error; |
69370d14 | 132 | } |
8bde7f77 | 133 | |
0d0ba59c SG |
134 | printf("Setup at %#08lx\n", images->ep); |
135 | ret = setup_zimage((void *)images->ep, cmd_line_dest, | |
69370d14 | 136 | 0, images->rd_start, |
0d0ba59c SG |
137 | images->rd_end - images->rd_start); |
138 | ||
139 | if (ret) { | |
69370d14 | 140 | printf("## Setting up boot parameters failed ...\n"); |
0d0ba59c | 141 | return 1; |
2262cfee | 142 | } |
8bde7f77 | 143 | |
0d0ba59c | 144 | return 0; |
2262cfee | 145 | |
cd7c596e | 146 | error: |
40d7e99d | 147 | return 1; |
8bde7f77 | 148 | } |
0d0ba59c | 149 | |
76539383 SG |
150 | int boot_linux_kernel(ulong setup_base, ulong load_address, bool image_64bit) |
151 | { | |
152 | bootm_announce_and_cleanup(); | |
153 | ||
154 | #ifdef CONFIG_SYS_COREBOOT | |
155 | timestamp_add_now(TS_U_BOOT_START_KERNEL); | |
156 | #endif | |
157 | if (image_64bit) { | |
61643ae6 SG |
158 | if (!cpu_has_64bit()) { |
159 | puts("Cannot boot 64-bit kernel on 32-bit machine\n"); | |
160 | return -EFAULT; | |
161 | } | |
23b89d4d SG |
162 | /* At present 64-bit U-Boot does not support booting a |
163 | * kernel. | |
164 | * TODO(sjg@chromium.org): Support booting both 32-bit and | |
165 | * 64-bit kernels from 64-bit U-Boot. | |
166 | */ | |
167 | #if !CONFIG_IS_ENABLED(X86_64) | |
61643ae6 | 168 | return cpu_jump_to_64bit(setup_base, load_address); |
23b89d4d | 169 | #endif |
76539383 SG |
170 | } else { |
171 | /* | |
172 | * Set %ebx, %ebp, and %edi to 0, %esi to point to the | |
173 | * boot_params structure, and then jump to the kernel. We | |
174 | * assume that %cs is 0x10, 4GB flat, and read/execute, and | |
175 | * the data segments are 0x18, 4GB flat, and read/write. | |
a187559e | 176 | * U-Boot is setting them up that way for itself in |
76539383 | 177 | * arch/i386/cpu/cpu.c. |
e49cceac SG |
178 | * |
179 | * Note that we cannot currently boot a kernel while running as | |
180 | * an EFI application. Please use the payload option for that. | |
76539383 | 181 | */ |
e49cceac | 182 | #ifndef CONFIG_EFI_APP |
76539383 SG |
183 | __asm__ __volatile__ ( |
184 | "movl $0, %%ebp\n" | |
185 | "cli\n" | |
186 | "jmp *%[kernel_entry]\n" | |
187 | :: [kernel_entry]"a"(load_address), | |
188 | [boot_params] "S"(setup_base), | |
189 | "b"(0), "D"(0) | |
190 | ); | |
e49cceac | 191 | #endif |
76539383 SG |
192 | } |
193 | ||
194 | /* We can't get to here */ | |
195 | return -EFAULT; | |
196 | } | |
197 | ||
0d0ba59c SG |
198 | /* Subcommand: GO */ |
199 | static int boot_jump_linux(bootm_headers_t *images) | |
200 | { | |
201 | debug("## Transferring control to Linux (at address %08lx, kernel %08lx) ...\n", | |
202 | images->ep, images->os.load); | |
203 | ||
61643ae6 SG |
204 | return boot_linux_kernel(images->ep, images->os.load, |
205 | images->os.arch == IH_ARCH_X86_64); | |
0d0ba59c SG |
206 | } |
207 | ||
208 | int do_bootm_linux(int flag, int argc, char * const argv[], | |
209 | bootm_headers_t *images) | |
210 | { | |
211 | /* No need for those on x86 */ | |
212 | if (flag & BOOTM_STATE_OS_BD_T || flag & BOOTM_STATE_OS_CMDLINE) | |
213 | return -1; | |
214 | ||
215 | if (flag & BOOTM_STATE_OS_PREP) | |
216 | return boot_prep_linux(images); | |
217 | ||
76539383 SG |
218 | if (flag & BOOTM_STATE_OS_GO) |
219 | return boot_jump_linux(images); | |
0d0ba59c SG |
220 | |
221 | return boot_jump_linux(images); | |
222 | } |