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Tom Rini10e47792018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
wdenk591dda52002-11-18 00:14:45 +00002/*
Gabe Black1cf51212011-12-05 12:09:23 +00003 * Copyright (c) 2011 The Chromium OS Authors.
wdenk591dda52002-11-18 00:14:45 +00004 * (C) Copyright 2002
Albert ARIBAUD60fbc8d2011-08-04 18:45:45 +02005 * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
wdenk591dda52002-11-18 00:14:45 +00006 */
7
wdenk57b2d802003-06-27 21:31:46 +00008/*
Graeme Russ45fc1d82011-04-13 19:43:26 +10009 * Linux x86 zImage and bzImage loading
wdenk57b2d802003-06-27 21:31:46 +000010 *
11 * based on the procdure described in
wdenk591dda52002-11-18 00:14:45 +000012 * linux/Documentation/i386/boot.txt
13 */
14
Simon Glass842ff442020-11-04 09:59:13 -070015#define LOG_CATEGORY LOGC_BOOT
16
wdenk591dda52002-11-18 00:14:45 +000017#include <common.h>
Simon Glass7b48ce82020-11-05 10:33:46 -070018#include <bootm.h>
Simon Glassed38aef2020-05-10 11:40:03 -060019#include <command.h>
Simon Glass83c2e492019-08-01 09:46:50 -060020#include <env.h>
Simon Glass02c51202021-03-15 18:00:23 +130021#include <init.h>
Simon Glass8f3f7612019-11-14 12:57:42 -070022#include <irq_func.h>
Simon Glass842ff442020-11-04 09:59:13 -070023#include <log.h>
Ivan Gorinov901bb0b2018-03-26 18:06:54 -070024#include <malloc.h>
Simon Glass858fed12020-04-08 16:57:36 -060025#include <acpi/acpi_table.h>
wdenk591dda52002-11-18 00:14:45 +000026#include <asm/io.h>
27#include <asm/ptrace.h>
28#include <asm/zimage.h>
wdenk591dda52002-11-18 00:14:45 +000029#include <asm/byteorder.h>
Simon Glassaa83f2b2014-10-19 21:11:20 -060030#include <asm/bootm.h>
Graeme Russ1bab1042010-04-24 00:05:49 +100031#include <asm/bootparam.h>
Simon Glass02c51202021-03-15 18:00:23 +130032#include <asm/global_data.h>
Vadim Bendebury8cd22c82012-10-23 18:04:34 +000033#ifdef CONFIG_SYS_COREBOOT
34#include <asm/arch/timestamp.h>
35#endif
Stefan Reinauer2e5225e2012-10-23 18:04:37 +000036#include <linux/compiler.h>
Simon Glass8ee28542020-11-04 09:59:14 -070037#include <linux/ctype.h>
Ivan Gorinov901bb0b2018-03-26 18:06:54 -070038#include <linux/libfdt.h>
wdenk591dda52002-11-18 00:14:45 +000039
Simon Glass02c51202021-03-15 18:00:23 +130040DECLARE_GLOBAL_DATA_PTR;
41
wdenk591dda52002-11-18 00:14:45 +000042/*
43 * Memory lay-out:
wdenk57b2d802003-06-27 21:31:46 +000044 *
wdenk591dda52002-11-18 00:14:45 +000045 * relative to setup_base (which is 0x90000 currently)
wdenk57b2d802003-06-27 21:31:46 +000046 *
47 * 0x0000-0x7FFF Real mode kernel
wdenk591dda52002-11-18 00:14:45 +000048 * 0x8000-0x8FFF Stack and heap
49 * 0x9000-0x90FF Kernel command line
50 */
Graeme Russ883c6032011-11-08 02:33:15 +000051#define DEFAULT_SETUP_BASE 0x90000
52#define COMMAND_LINE_OFFSET 0x9000
53#define HEAP_END_OFFSET 0x8e00
wdenk591dda52002-11-18 00:14:45 +000054
Graeme Russ883c6032011-11-08 02:33:15 +000055#define COMMAND_LINE_SIZE 2048
wdenk591dda52002-11-18 00:14:45 +000056
Simon Glass48800f42020-09-05 14:50:38 -060057/**
58 * struct zboot_state - Current state of the boot
59 *
60 * @bzimage_addr: Address of the bzImage to boot
61 * @bzimage_size: Size of the bzImage, or 0 to detect this
62 * @initrd_addr: Address of the initial ramdisk, or 0 if none
63 * @initrd_size: Size of the initial ramdisk, or 0 if none
64 * @load_address: Address where the bzImage is moved before booting, either
65 * BZIMAGE_LOAD_ADDR or ZIMAGE_LOAD_ADDR
Simon Glass1931b192020-09-05 14:50:44 -060066 * @base_ptr: Pointer to the boot parameters, typically at address
67 * DEFAULT_SETUP_BASE
Simon Glass5e956d12020-11-09 07:12:24 -070068 * @cmdline: Environment variable containing the 'override' command line, or
69 * NULL to use the one in the setup block
Simon Glass48800f42020-09-05 14:50:38 -060070 */
71struct zboot_state {
72 ulong bzimage_addr;
73 ulong bzimage_size;
74 ulong initrd_addr;
75 ulong initrd_size;
76 ulong load_address;
Simon Glass1931b192020-09-05 14:50:44 -060077 struct boot_params *base_ptr;
Simon Glass5e956d12020-11-09 07:12:24 -070078 char *cmdline;
Simon Glass48800f42020-09-05 14:50:38 -060079} state;
80
Simon Glassd9b3c982020-09-05 14:50:43 -060081enum {
82 ZBOOT_STATE_START = BIT(0),
Simon Glass24d26f72020-09-05 14:50:46 -060083 ZBOOT_STATE_LOAD = BIT(1),
Simon Glass30634832020-09-05 14:50:47 -060084 ZBOOT_STATE_SETUP = BIT(2),
85 ZBOOT_STATE_INFO = BIT(3),
86 ZBOOT_STATE_GO = BIT(4),
Simon Glassd9b3c982020-09-05 14:50:43 -060087
Simon Glassaad0d762020-09-05 14:50:50 -060088 /* This one doesn't execute automatically, so stop the count before 5 */
89 ZBOOT_STATE_DUMP = BIT(5),
Simon Glass30634832020-09-05 14:50:47 -060090 ZBOOT_STATE_COUNT = 5,
Simon Glassd9b3c982020-09-05 14:50:43 -060091};
92
wdenk591dda52002-11-18 00:14:45 +000093static void build_command_line(char *command_line, int auto_boot)
94{
95 char *env_command_line;
wdenk57b2d802003-06-27 21:31:46 +000096
wdenk591dda52002-11-18 00:14:45 +000097 command_line[0] = '\0';
wdenk57b2d802003-06-27 21:31:46 +000098
Simon Glass64b723f2017-08-03 12:22:12 -060099 env_command_line = env_get("bootargs");
wdenk57b2d802003-06-27 21:31:46 +0000100
wdenk591dda52002-11-18 00:14:45 +0000101 /* set console= argument if we use a serial console */
Graeme Russ883c6032011-11-08 02:33:15 +0000102 if (!strstr(env_command_line, "console=")) {
Simon Glass64b723f2017-08-03 12:22:12 -0600103 if (!strcmp(env_get("stdout"), "serial")) {
wdenk57b2d802003-06-27 21:31:46 +0000104
wdenk591dda52002-11-18 00:14:45 +0000105 /* We seem to use serial console */
wdenk57b2d802003-06-27 21:31:46 +0000106 sprintf(command_line, "console=ttyS0,%s ",
Simon Glass64b723f2017-08-03 12:22:12 -0600107 env_get("baudrate"));
wdenk591dda52002-11-18 00:14:45 +0000108 }
109 }
wdenk57b2d802003-06-27 21:31:46 +0000110
Graeme Russ883c6032011-11-08 02:33:15 +0000111 if (auto_boot)
wdenk591dda52002-11-18 00:14:45 +0000112 strcat(command_line, "auto ");
wdenk57b2d802003-06-27 21:31:46 +0000113
Graeme Russ883c6032011-11-08 02:33:15 +0000114 if (env_command_line)
wdenk591dda52002-11-18 00:14:45 +0000115 strcat(command_line, env_command_line);
Simon Glasseeb01222021-01-24 10:06:09 -0700116#ifdef DEBUG
117 printf("Kernel command line:");
118 puts(command_line);
119 printf("\n");
120#endif
wdenk591dda52002-11-18 00:14:45 +0000121}
122
Gabe Black540c2622011-12-05 12:09:26 +0000123static int kernel_magic_ok(struct setup_header *hdr)
wdenk591dda52002-11-18 00:14:45 +0000124{
Graeme Russ1bab1042010-04-24 00:05:49 +1000125 if (KERNEL_MAGIC != hdr->boot_flag) {
Gabe Black1cf51212011-12-05 12:09:23 +0000126 printf("Error: Invalid Boot Flag "
127 "(found 0x%04x, expected 0x%04x)\n",
128 hdr->boot_flag, KERNEL_MAGIC);
wdenk591dda52002-11-18 00:14:45 +0000129 return 0;
Graeme Russ1bab1042010-04-24 00:05:49 +1000130 } else {
131 printf("Valid Boot Flag\n");
Gabe Black540c2622011-12-05 12:09:26 +0000132 return 1;
wdenk591dda52002-11-18 00:14:45 +0000133 }
Gabe Black540c2622011-12-05 12:09:26 +0000134}
wdenk57b2d802003-06-27 21:31:46 +0000135
Simon Glassdf30d412020-09-05 14:50:40 -0600136static int get_boot_protocol(struct setup_header *hdr, bool verbose)
Gabe Black540c2622011-12-05 12:09:26 +0000137{
138 if (hdr->header == KERNEL_V2_MAGIC) {
Simon Glassdf30d412020-09-05 14:50:40 -0600139 if (verbose)
140 printf("Magic signature found\n");
Gabe Black540c2622011-12-05 12:09:26 +0000141 return hdr->version;
wdenk591dda52002-11-18 00:14:45 +0000142 } else {
143 /* Very old kernel */
Simon Glassdf30d412020-09-05 14:50:40 -0600144 if (verbose)
145 printf("Magic signature not found\n");
Gabe Black540c2622011-12-05 12:09:26 +0000146 return 0x0100;
wdenk591dda52002-11-18 00:14:45 +0000147 }
Gabe Black540c2622011-12-05 12:09:26 +0000148}
149
Ivan Gorinov901bb0b2018-03-26 18:06:54 -0700150static int setup_device_tree(struct setup_header *hdr, const void *fdt_blob)
151{
Simon Glassdf30d412020-09-05 14:50:40 -0600152 int bootproto = get_boot_protocol(hdr, false);
Ivan Gorinov901bb0b2018-03-26 18:06:54 -0700153 struct setup_data *sd;
154 int size;
155
156 if (bootproto < 0x0209)
157 return -ENOTSUPP;
158
159 if (!fdt_blob)
160 return 0;
161
162 size = fdt_totalsize(fdt_blob);
163 if (size < 0)
164 return -EINVAL;
165
166 size += sizeof(struct setup_data);
167 sd = (struct setup_data *)malloc(size);
168 if (!sd) {
169 printf("Not enough memory for DTB setup data\n");
170 return -ENOMEM;
171 }
172
173 sd->next = hdr->setup_data;
174 sd->type = SETUP_DTB;
175 sd->len = fdt_totalsize(fdt_blob);
176 memcpy(sd->data, fdt_blob, sd->len);
177 hdr->setup_data = (unsigned long)sd;
178
179 return 0;
180}
181
Simon Glassdf30d412020-09-05 14:50:40 -0600182static const char *get_kernel_version(struct boot_params *params,
183 void *kernel_base)
184{
185 struct setup_header *hdr = &params->hdr;
186 int bootproto;
Simon Glass8ee28542020-11-04 09:59:14 -0700187 const char *s, *end;
Simon Glassdf30d412020-09-05 14:50:40 -0600188
189 bootproto = get_boot_protocol(hdr, false);
190 if (bootproto < 0x0200 || hdr->setup_sects < 15)
191 return NULL;
192
Simon Glass8ee28542020-11-04 09:59:14 -0700193 /* sanity-check the kernel version in case it is missing */
194 for (s = kernel_base + hdr->kernel_version + 0x200, end = s + 0x100; *s;
195 s++) {
196 if (!isprint(*s))
197 return NULL;
198 }
199
Simon Glassdf30d412020-09-05 14:50:40 -0600200 return kernel_base + hdr->kernel_version + 0x200;
201}
202
Gabe Black540c2622011-12-05 12:09:26 +0000203struct boot_params *load_zimage(char *image, unsigned long kernel_size,
Simon Glassd98a5bd2014-10-10 08:21:56 -0600204 ulong *load_addressp)
Gabe Black540c2622011-12-05 12:09:26 +0000205{
206 struct boot_params *setup_base;
Simon Glassdf30d412020-09-05 14:50:40 -0600207 const char *version;
Gabe Black540c2622011-12-05 12:09:26 +0000208 int setup_size;
209 int bootproto;
210 int big_image;
211
212 struct boot_params *params = (struct boot_params *)image;
213 struct setup_header *hdr = &params->hdr;
214
215 /* base address for real-mode segment */
216 setup_base = (struct boot_params *)DEFAULT_SETUP_BASE;
217
218 if (!kernel_magic_ok(hdr))
219 return 0;
wdenk57b2d802003-06-27 21:31:46 +0000220
wdenk591dda52002-11-18 00:14:45 +0000221 /* determine size of setup */
Graeme Russ1bab1042010-04-24 00:05:49 +1000222 if (0 == hdr->setup_sects) {
Simon Glass9d8ca9f2020-11-04 09:59:15 -0700223 log_warning("Setup Sectors = 0 (defaulting to 4)\n");
wdenk591dda52002-11-18 00:14:45 +0000224 setup_size = 5 * 512;
225 } else {
Graeme Russ1bab1042010-04-24 00:05:49 +1000226 setup_size = (hdr->setup_sects + 1) * 512;
wdenk591dda52002-11-18 00:14:45 +0000227 }
wdenk57b2d802003-06-27 21:31:46 +0000228
Simon Glass9d8ca9f2020-11-04 09:59:15 -0700229 log_debug("Setup Size = 0x%8.8lx\n", (ulong)setup_size);
Graeme Russ1bab1042010-04-24 00:05:49 +1000230
Graeme Russ883c6032011-11-08 02:33:15 +0000231 if (setup_size > SETUP_MAX_SIZE)
wdenk591dda52002-11-18 00:14:45 +0000232 printf("Error: Setup is too large (%d bytes)\n", setup_size);
wdenk57b2d802003-06-27 21:31:46 +0000233
Gabe Black540c2622011-12-05 12:09:26 +0000234 /* determine boot protocol version */
Simon Glassdf30d412020-09-05 14:50:40 -0600235 bootproto = get_boot_protocol(hdr, true);
Gabe Black540c2622011-12-05 12:09:26 +0000236
Simon Glass9d8ca9f2020-11-04 09:59:15 -0700237 log_debug("Using boot protocol version %x.%02x\n",
238 (bootproto & 0xff00) >> 8, bootproto & 0xff);
Gabe Black540c2622011-12-05 12:09:26 +0000239
Simon Glassdf30d412020-09-05 14:50:40 -0600240 version = get_kernel_version(params, image);
241 if (version)
242 printf("Linux kernel version %s\n", version);
243 else
244 printf("Setup Sectors < 15 - Cannot print kernel version\n");
Gabe Black540c2622011-12-05 12:09:26 +0000245
wdenk591dda52002-11-18 00:14:45 +0000246 /* Determine image type */
Graeme Russ883c6032011-11-08 02:33:15 +0000247 big_image = (bootproto >= 0x0200) &&
248 (hdr->loadflags & BIG_KERNEL_FLAG);
wdenk57b2d802003-06-27 21:31:46 +0000249
Graeme Russ1bab1042010-04-24 00:05:49 +1000250 /* Determine load address */
Gabe Black1cf51212011-12-05 12:09:23 +0000251 if (big_image)
Simon Glassd98a5bd2014-10-10 08:21:56 -0600252 *load_addressp = BZIMAGE_LOAD_ADDR;
Gabe Black1cf51212011-12-05 12:09:23 +0000253 else
Simon Glassd98a5bd2014-10-10 08:21:56 -0600254 *load_addressp = ZIMAGE_LOAD_ADDR;
wdenk57b2d802003-06-27 21:31:46 +0000255
Gabe Blackc67a9482011-12-05 12:09:24 +0000256 printf("Building boot_params at 0x%8.8lx\n", (ulong)setup_base);
257 memset(setup_base, 0, sizeof(*setup_base));
258 setup_base->hdr = params->hdr;
wdenk57b2d802003-06-27 21:31:46 +0000259
Gabe Black540c2622011-12-05 12:09:26 +0000260 if (bootproto >= 0x0204)
261 kernel_size = hdr->syssize * 16;
262 else
263 kernel_size -= setup_size;
wdenk57b2d802003-06-27 21:31:46 +0000264
wdenk57b2d802003-06-27 21:31:46 +0000265 if (bootproto == 0x0100) {
Graeme Russ883c6032011-11-08 02:33:15 +0000266 /*
267 * A very old kernel MUST have its real-mode code
268 * loaded at 0x90000
269 */
Simon Glassca37a392017-01-16 07:03:35 -0700270 if ((ulong)setup_base != 0x90000) {
wdenk591dda52002-11-18 00:14:45 +0000271 /* Copy the real-mode kernel */
Graeme Russ883c6032011-11-08 02:33:15 +0000272 memmove((void *)0x90000, setup_base, setup_size);
273
wdenk591dda52002-11-18 00:14:45 +0000274 /* Copy the command line */
Graeme Russ883c6032011-11-08 02:33:15 +0000275 memmove((void *)0x99000,
Gabe Black1cf51212011-12-05 12:09:23 +0000276 (u8 *)setup_base + COMMAND_LINE_OFFSET,
Graeme Russ883c6032011-11-08 02:33:15 +0000277 COMMAND_LINE_SIZE);
wdenk57b2d802003-06-27 21:31:46 +0000278
Graeme Russ883c6032011-11-08 02:33:15 +0000279 /* Relocated */
Gabe Black1cf51212011-12-05 12:09:23 +0000280 setup_base = (struct boot_params *)0x90000;
wdenk591dda52002-11-18 00:14:45 +0000281 }
wdenk57b2d802003-06-27 21:31:46 +0000282
wdenk591dda52002-11-18 00:14:45 +0000283 /* It is recommended to clear memory up to the 32K mark */
Gabe Black1cf51212011-12-05 12:09:23 +0000284 memset((u8 *)0x90000 + setup_size, 0,
285 SETUP_MAX_SIZE - setup_size);
wdenk591dda52002-11-18 00:14:45 +0000286 }
wdenk57b2d802003-06-27 21:31:46 +0000287
Gabe Black540c2622011-12-05 12:09:26 +0000288 if (big_image) {
289 if (kernel_size > BZIMAGE_MAX_SIZE) {
290 printf("Error: bzImage kernel too big! "
291 "(size: %ld, max: %d)\n",
292 kernel_size, BZIMAGE_MAX_SIZE);
293 return 0;
294 }
295 } else if ((kernel_size) > ZIMAGE_MAX_SIZE) {
296 printf("Error: zImage kernel too big! (size: %ld, max: %d)\n",
297 kernel_size, ZIMAGE_MAX_SIZE);
298 return 0;
299 }
300
Simon Glassd98a5bd2014-10-10 08:21:56 -0600301 printf("Loading %s at address %lx (%ld bytes)\n",
302 big_image ? "bzImage" : "zImage", *load_addressp, kernel_size);
Gabe Black540c2622011-12-05 12:09:26 +0000303
Simon Glassd98a5bd2014-10-10 08:21:56 -0600304 memmove((void *)*load_addressp, image + setup_size, kernel_size);
Gabe Black540c2622011-12-05 12:09:26 +0000305
306 return setup_base;
307}
308
309int setup_zimage(struct boot_params *setup_base, char *cmd_line, int auto_boot,
Simon Glass12d93ab2020-09-05 14:50:51 -0600310 ulong initrd_addr, ulong initrd_size, ulong cmdline_force)
Gabe Black540c2622011-12-05 12:09:26 +0000311{
312 struct setup_header *hdr = &setup_base->hdr;
Simon Glassdf30d412020-09-05 14:50:40 -0600313 int bootproto = get_boot_protocol(hdr, false);
Gabe Black540c2622011-12-05 12:09:26 +0000314
Simon Glass842ff442020-11-04 09:59:13 -0700315 log_debug("Setup E820 entries\n");
Simon Glass02c51202021-03-15 18:00:23 +1300316 if (ll_boot_init()) {
317 setup_base->e820_entries = install_e820_map(
318 ARRAY_SIZE(setup_base->e820_map), setup_base->e820_map);
319 } else if (IS_ENABLED(CONFIG_COREBOOT_SYSINFO)) {
320 setup_base->e820_entries = cb_install_e820_map(
321 ARRAY_SIZE(setup_base->e820_map), setup_base->e820_map);
322 }
Graeme Russ1bab1042010-04-24 00:05:49 +1000323
Gabe Black540c2622011-12-05 12:09:26 +0000324 if (bootproto == 0x0100) {
325 setup_base->screen_info.cl_magic = COMMAND_LINE_MAGIC;
326 setup_base->screen_info.cl_offset = COMMAND_LINE_OFFSET;
327 }
wdenk591dda52002-11-18 00:14:45 +0000328 if (bootproto >= 0x0200) {
Simon Glassd67ff032020-09-05 14:50:41 -0600329 hdr->type_of_loader = 0x80; /* U-Boot version 0 */
wdenk591dda52002-11-18 00:14:45 +0000330 if (initrd_addr) {
Gabe Black1cf51212011-12-05 12:09:23 +0000331 printf("Initial RAM disk at linear address "
332 "0x%08lx, size %ld bytes\n",
wdenk591dda52002-11-18 00:14:45 +0000333 initrd_addr, initrd_size);
wdenk57b2d802003-06-27 21:31:46 +0000334
Graeme Russ1bab1042010-04-24 00:05:49 +1000335 hdr->ramdisk_image = initrd_addr;
336 hdr->ramdisk_size = initrd_size;
wdenk591dda52002-11-18 00:14:45 +0000337 }
338 }
wdenk57b2d802003-06-27 21:31:46 +0000339
wdenk591dda52002-11-18 00:14:45 +0000340 if (bootproto >= 0x0201) {
Graeme Russ1bab1042010-04-24 00:05:49 +1000341 hdr->heap_end_ptr = HEAP_END_OFFSET;
342 hdr->loadflags |= HEAP_FLAG;
wdenk591dda52002-11-18 00:14:45 +0000343 }
wdenk57b2d802003-06-27 21:31:46 +0000344
Simon Glass4b4f2732014-10-19 21:11:21 -0600345 if (cmd_line) {
Simon Glass7b48ce82020-11-05 10:33:46 -0700346 int max_size = 0xff;
347 int ret;
348
Simon Glass842ff442020-11-04 09:59:13 -0700349 log_debug("Setup cmdline\n");
Simon Glass7b48ce82020-11-05 10:33:46 -0700350 if (bootproto >= 0x0206)
351 max_size = hdr->cmdline_size;
Simon Glass4b4f2732014-10-19 21:11:21 -0600352 if (bootproto >= 0x0202) {
353 hdr->cmd_line_ptr = (uintptr_t)cmd_line;
354 } else if (bootproto >= 0x0200) {
355 setup_base->screen_info.cl_magic = COMMAND_LINE_MAGIC;
356 setup_base->screen_info.cl_offset =
357 (uintptr_t)cmd_line - (uintptr_t)setup_base;
Graeme Russ1bab1042010-04-24 00:05:49 +1000358
Simon Glass4b4f2732014-10-19 21:11:21 -0600359 hdr->setup_move_size = 0x9100;
360 }
361
362 /* build command line at COMMAND_LINE_OFFSET */
Simon Glass12d93ab2020-09-05 14:50:51 -0600363 if (cmdline_force)
364 strcpy(cmd_line, (char *)cmdline_force);
365 else
366 build_command_line(cmd_line, auto_boot);
Simon Glass7b48ce82020-11-05 10:33:46 -0700367 ret = bootm_process_cmdline(cmd_line, max_size, BOOTM_CL_ALL);
368 if (ret) {
Simon Glasseeb01222021-01-24 10:06:09 -0700369 printf("Cmdline setup failed (max_size=%x, bootproto=%x, err=%d)\n",
370 max_size, bootproto, ret);
Simon Glass7b48ce82020-11-05 10:33:46 -0700371 return ret;
372 }
373 printf("Kernel command line: \"");
374 puts(cmd_line);
375 printf("\"\n");
wdenk591dda52002-11-18 00:14:45 +0000376 }
wdenk591dda52002-11-18 00:14:45 +0000377
Simon Glass3a177172020-09-05 14:50:39 -0600378 if (IS_ENABLED(CONFIG_INTEL_MID) && bootproto >= 0x0207)
Andy Shevchenko8b7adf82018-01-10 19:40:14 +0200379 hdr->hardware_subarch = X86_SUBARCH_INTEL_MID;
Andy Shevchenko8b7adf82018-01-10 19:40:14 +0200380
Simon Glass3a177172020-09-05 14:50:39 -0600381 if (IS_ENABLED(CONFIG_GENERATE_ACPI_TABLE))
382 setup_base->acpi_rsdp_addr = acpi_get_rsdp_addr();
Andy Shevchenkod87a21d2019-09-13 18:42:00 +0300383
Simon Glass842ff442020-11-04 09:59:13 -0700384 log_debug("Setup devicetree\n");
Ivan Gorinov901bb0b2018-03-26 18:06:54 -0700385 setup_device_tree(hdr, (const void *)env_get_hex("fdtaddr", 0));
Bin Mengf6d504f2015-07-06 16:31:36 +0800386 setup_video(&setup_base->screen_info);
387
Simon Glass3a177172020-09-05 14:50:39 -0600388 if (IS_ENABLED(CONFIG_EFI_STUB))
389 setup_efi_info(&setup_base->efi_info);
Bin Meng106dcfc2018-08-23 08:24:10 -0700390
Gabe Black540c2622011-12-05 12:09:26 +0000391 return 0;
wdenk591dda52002-11-18 00:14:45 +0000392}
393
Simon Glassd9b3c982020-09-05 14:50:43 -0600394static int do_zboot_start(struct cmd_tbl *cmdtp, int flag, int argc,
395 char *const argv[])
Graeme Russ1bab1042010-04-24 00:05:49 +1000396{
Simon Glassd9b3c982020-09-05 14:50:43 -0600397 const char *s;
Graeme Russ1bab1042010-04-24 00:05:49 +1000398
Simon Glass48800f42020-09-05 14:50:38 -0600399 memset(&state, '\0', sizeof(state));
Gabe Black1cf51212011-12-05 12:09:23 +0000400 if (argc >= 2) {
Graeme Russ3134be22010-10-07 20:03:19 +1100401 /* argv[1] holds the address of the bzImage */
402 s = argv[1];
Gabe Black1cf51212011-12-05 12:09:23 +0000403 } else {
Simon Glass64b723f2017-08-03 12:22:12 -0600404 s = env_get("fileaddr");
Gabe Black1cf51212011-12-05 12:09:23 +0000405 }
Graeme Russ1bab1042010-04-24 00:05:49 +1000406
Graeme Russ3134be22010-10-07 20:03:19 +1100407 if (s)
Simon Glass48800f42020-09-05 14:50:38 -0600408 state.bzimage_addr = simple_strtoul(s, NULL, 16);
Graeme Russ3134be22010-10-07 20:03:19 +1100409
Gabe Black69b49ee2011-12-05 12:09:27 +0000410 if (argc >= 3) {
Graeme Russ3134be22010-10-07 20:03:19 +1100411 /* argv[2] holds the size of the bzImage */
Simon Glass48800f42020-09-05 14:50:38 -0600412 state.bzimage_size = simple_strtoul(argv[2], NULL, 16);
Gabe Black69b49ee2011-12-05 12:09:27 +0000413 }
414
415 if (argc >= 4)
Simon Glass48800f42020-09-05 14:50:38 -0600416 state.initrd_addr = simple_strtoul(argv[3], NULL, 16);
Gabe Black69b49ee2011-12-05 12:09:27 +0000417 if (argc >= 5)
Simon Glass48800f42020-09-05 14:50:38 -0600418 state.initrd_size = simple_strtoul(argv[4], NULL, 16);
Simon Glassc55ce682020-09-05 14:50:49 -0600419 if (argc >= 6) {
420 /*
421 * When the base_ptr is passed in, we assume that the image is
422 * already loaded at the address given by argv[1] and therefore
423 * the original bzImage is somewhere else, or not accessible.
424 * In any case, we don't need access to the bzImage since all
425 * the processing is assumed to be done.
426 *
427 * So set the base_ptr to the given address, use this arg as the
428 * load address and set bzimage_addr to 0 so we know that it
429 * cannot be proceesed (or processed again).
430 */
431 state.base_ptr = (void *)simple_strtoul(argv[5], NULL, 16);
432 state.load_address = state.bzimage_addr;
433 state.bzimage_addr = 0;
434 }
Simon Glass12d93ab2020-09-05 14:50:51 -0600435 if (argc >= 7)
Simon Glass5e956d12020-11-09 07:12:24 -0700436 state.cmdline = env_get(argv[6]);
Graeme Russ1bab1042010-04-24 00:05:49 +1000437
Simon Glass24d26f72020-09-05 14:50:46 -0600438 return 0;
439}
440
441static int do_zboot_load(struct cmd_tbl *cmdtp, int flag, int argc,
442 char *const argv[])
443{
444 struct boot_params *base_ptr;
445
Simon Glassc55ce682020-09-05 14:50:49 -0600446 if (state.base_ptr) {
447 struct boot_params *from = (struct boot_params *)state.base_ptr;
448
449 base_ptr = (struct boot_params *)DEFAULT_SETUP_BASE;
Simon Glass9d8ca9f2020-11-04 09:59:15 -0700450 log_debug("Building boot_params at 0x%8.8lx\n",
451 (ulong)base_ptr);
Simon Glassc55ce682020-09-05 14:50:49 -0600452 memset(base_ptr, '\0', sizeof(*base_ptr));
453 base_ptr->hdr = from->hdr;
454 } else {
455 base_ptr = load_zimage((void *)state.bzimage_addr, state.bzimage_size,
456 &state.load_address);
457 if (!base_ptr) {
458 puts("## Kernel loading failed ...\n");
459 return CMD_RET_FAILURE;
460 }
Graeme Russ1bab1042010-04-24 00:05:49 +1000461 }
Simon Glass1931b192020-09-05 14:50:44 -0600462 state.base_ptr = base_ptr;
Simon Glass58a90462020-09-05 14:50:48 -0600463 if (env_set_hex("zbootbase", (ulong)base_ptr) ||
464 env_set_hex("zbootaddr", state.load_address))
465 return CMD_RET_FAILURE;
Simon Glass48800f42020-09-05 14:50:38 -0600466
Simon Glass30634832020-09-05 14:50:47 -0600467 return 0;
468}
469
470static int do_zboot_setup(struct cmd_tbl *cmdtp, int flag, int argc,
471 char *const argv[])
472{
473 struct boot_params *base_ptr = state.base_ptr;
474 int ret;
475
476 if (!base_ptr) {
477 printf("base is not set: use 'zboot load' first\n");
478 return CMD_RET_FAILURE;
479 }
480 ret = setup_zimage(base_ptr, (char *)base_ptr + COMMAND_LINE_OFFSET,
Simon Glass12d93ab2020-09-05 14:50:51 -0600481 0, state.initrd_addr, state.initrd_size,
Simon Glass5e956d12020-11-09 07:12:24 -0700482 (ulong)state.cmdline);
Simon Glass30634832020-09-05 14:50:47 -0600483 if (ret) {
Simon Glassddf446b2014-10-10 08:21:59 -0600484 puts("Setting up boot parameters failed ...\n");
Simon Glass30634832020-09-05 14:50:47 -0600485 return CMD_RET_FAILURE;
Gabe Black540c2622011-12-05 12:09:26 +0000486 }
487
Simon Glass1931b192020-09-05 14:50:44 -0600488 return 0;
489}
490
Simon Glass83dd29e2020-09-05 14:50:45 -0600491static int do_zboot_info(struct cmd_tbl *cmdtp, int flag, int argc,
492 char *const argv[])
493{
494 printf("Kernel loaded at %08lx, setup_base=%p\n",
495 state.load_address, state.base_ptr);
496
497 return 0;
498}
499
Simon Glass1931b192020-09-05 14:50:44 -0600500static int do_zboot_go(struct cmd_tbl *cmdtp, int flag, int argc,
501 char *const argv[])
502{
503 int ret;
504
Simon Glass0db800c2020-09-05 14:50:42 -0600505 disable_interrupts();
Simon Glass1931b192020-09-05 14:50:44 -0600506
Gabe Black540c2622011-12-05 12:09:26 +0000507 /* we assume that the kernel is in place */
Simon Glass1931b192020-09-05 14:50:44 -0600508 ret = boot_linux_kernel((ulong)state.base_ptr, state.load_address,
509 false);
510 printf("Kernel returned! (err=%d)\n", ret);
511
512 return CMD_RET_FAILURE;
Graeme Russ1bab1042010-04-24 00:05:49 +1000513}
514
Simon Glassaad0d762020-09-05 14:50:50 -0600515static void print_num(const char *name, ulong value)
516{
517 printf("%-20s: %lx\n", name, value);
518}
519
520static void print_num64(const char *name, u64 value)
521{
522 printf("%-20s: %llx\n", name, value);
523}
524
525static const char *const e820_type_name[E820_COUNT] = {
526 [E820_RAM] = "RAM",
527 [E820_RESERVED] = "Reserved",
528 [E820_ACPI] = "ACPI",
529 [E820_NVS] = "ACPI NVS",
530 [E820_UNUSABLE] = "Unusable",
531};
532
533static const char *const bootloader_id[] = {
534 "LILO",
535 "Loadlin",
536 "bootsect-loader",
537 "Syslinux",
538 "Etherboot/gPXE/iPXE",
539 "ELILO",
540 "undefined",
541 "GRUB",
542 "U-Boot",
543 "Xen",
544 "Gujin",
545 "Qemu",
546 "Arcturus Networks uCbootloader",
547 "kexec-tools",
548 "Extended",
549 "Special",
550 "Reserved",
551 "Minimal Linux Bootloader",
552 "OVMF UEFI virtualization stack",
553};
554
555struct flag_info {
556 uint bit;
557 const char *name;
558};
559
560static struct flag_info load_flags[] = {
561 { LOADED_HIGH, "loaded-high" },
562 { QUIET_FLAG, "quiet" },
563 { KEEP_SEGMENTS, "keep-segments" },
564 { CAN_USE_HEAP, "can-use-heap" },
565};
566
567static struct flag_info xload_flags[] = {
568 { XLF_KERNEL_64, "64-bit-entry" },
569 { XLF_CAN_BE_LOADED_ABOVE_4G, "can-load-above-4gb" },
570 { XLF_EFI_HANDOVER_32, "32-efi-handoff" },
571 { XLF_EFI_HANDOVER_64, "64-efi-handoff" },
572 { XLF_EFI_KEXEC, "kexec-efi-runtime" },
573};
574
575static void print_flags(struct flag_info *flags, int count, uint value)
576{
577 int i;
578
579 printf("%-20s:", "");
580 for (i = 0; i < count; i++) {
581 uint mask = flags[i].bit;
582
583 if (value & mask)
584 printf(" %s", flags[i].name);
585 }
586 printf("\n");
587}
588
589static void show_loader(struct setup_header *hdr)
590{
591 bool version_valid = false;
592 int type, version;
593 const char *name;
594
595 type = hdr->type_of_loader >> 4;
596 version = hdr->type_of_loader & 0xf;
597 if (type == 0xe)
598 type = 0x10 + hdr->ext_loader_type;
599 version |= hdr->ext_loader_ver << 4;
600 if (!hdr->type_of_loader) {
601 name = "pre-2.00 bootloader";
602 } else if (hdr->type_of_loader == 0xff) {
603 name = "unknown";
604 } else if (type < ARRAY_SIZE(bootloader_id)) {
605 name = bootloader_id[type];
606 version_valid = true;
607 } else {
608 name = "undefined";
609 }
610 printf("%20s %s", "", name);
611 if (version_valid)
612 printf(", version %x", version);
613 printf("\n");
614}
615
Simon Glassba094bb2021-01-24 10:06:08 -0700616void zimage_dump(struct boot_params *base_ptr)
Simon Glassaad0d762020-09-05 14:50:50 -0600617{
Simon Glassaad0d762020-09-05 14:50:50 -0600618 struct setup_header *hdr;
619 const char *version;
620 int i;
621
Simon Glassaad0d762020-09-05 14:50:50 -0600622 printf("Setup located at %p:\n\n", base_ptr);
623 print_num64("ACPI RSDP addr", base_ptr->acpi_rsdp_addr);
624
625 printf("E820: %d entries\n", base_ptr->e820_entries);
626 if (base_ptr->e820_entries) {
627 printf("%18s %16s %s\n", "Addr", "Size", "Type");
628 for (i = 0; i < base_ptr->e820_entries; i++) {
629 struct e820_entry *entry = &base_ptr->e820_map[i];
630
631 printf("%12llx %10llx %s\n", entry->addr, entry->size,
632 entry->type < E820_COUNT ?
633 e820_type_name[entry->type] :
634 simple_itoa(entry->type));
635 }
636 }
637
638 hdr = &base_ptr->hdr;
639 print_num("Setup sectors", hdr->setup_sects);
640 print_num("Root flags", hdr->root_flags);
641 print_num("Sys size", hdr->syssize);
642 print_num("RAM size", hdr->ram_size);
643 print_num("Video mode", hdr->vid_mode);
644 print_num("Root dev", hdr->root_dev);
645 print_num("Boot flag", hdr->boot_flag);
646 print_num("Jump", hdr->jump);
647 print_num("Header", hdr->header);
648 if (hdr->header == KERNEL_V2_MAGIC)
649 printf("%-20s %s\n", "", "Kernel V2");
650 else
651 printf("%-20s %s\n", "", "Ancient kernel, using version 100");
652 print_num("Version", hdr->version);
653 print_num("Real mode switch", hdr->realmode_swtch);
654 print_num("Start sys", hdr->start_sys);
655 print_num("Kernel version", hdr->kernel_version);
656 version = get_kernel_version(base_ptr, (void *)state.bzimage_addr);
657 if (version)
658 printf(" @%p: %s\n", version, version);
659 print_num("Type of loader", hdr->type_of_loader);
660 show_loader(hdr);
661 print_num("Load flags", hdr->loadflags);
662 print_flags(load_flags, ARRAY_SIZE(load_flags), hdr->loadflags);
663 print_num("Setup move size", hdr->setup_move_size);
664 print_num("Code32 start", hdr->code32_start);
665 print_num("Ramdisk image", hdr->ramdisk_image);
666 print_num("Ramdisk size", hdr->ramdisk_size);
667 print_num("Bootsect kludge", hdr->bootsect_kludge);
668 print_num("Heap end ptr", hdr->heap_end_ptr);
669 print_num("Ext loader ver", hdr->ext_loader_ver);
670 print_num("Ext loader type", hdr->ext_loader_type);
671 print_num("Command line ptr", hdr->cmd_line_ptr);
672 if (hdr->cmd_line_ptr) {
673 printf(" ");
674 /* Use puts() to avoid limits from CONFIG_SYS_PBSIZE */
Simon Glass12d93ab2020-09-05 14:50:51 -0600675 puts((char *)(ulong)hdr->cmd_line_ptr);
Simon Glassaad0d762020-09-05 14:50:50 -0600676 printf("\n");
677 }
678 print_num("Initrd addr max", hdr->initrd_addr_max);
679 print_num("Kernel alignment", hdr->kernel_alignment);
680 print_num("Relocatable kernel", hdr->relocatable_kernel);
681 print_num("Min alignment", hdr->min_alignment);
682 if (hdr->min_alignment)
683 printf("%-20s: %x\n", "", 1 << hdr->min_alignment);
684 print_num("Xload flags", hdr->xloadflags);
685 print_flags(xload_flags, ARRAY_SIZE(xload_flags), hdr->xloadflags);
686 print_num("Cmdline size", hdr->cmdline_size);
687 print_num("Hardware subarch", hdr->hardware_subarch);
688 print_num64("HW subarch data", hdr->hardware_subarch_data);
689 print_num("Payload offset", hdr->payload_offset);
690 print_num("Payload length", hdr->payload_length);
691 print_num64("Setup data", hdr->setup_data);
692 print_num64("Pref address", hdr->pref_address);
693 print_num("Init size", hdr->init_size);
694 print_num("Handover offset", hdr->handover_offset);
695 if (get_boot_protocol(hdr, false) >= 0x215)
696 print_num("Kernel info offset", hdr->kernel_info_offset);
Simon Glassba094bb2021-01-24 10:06:08 -0700697}
698
699static int do_zboot_dump(struct cmd_tbl *cmdtp, int flag, int argc,
700 char *const argv[])
701{
702 struct boot_params *base_ptr = state.base_ptr;
703
704 if (argc > 1)
705 base_ptr = (void *)simple_strtoul(argv[1], NULL, 16);
706 if (!base_ptr) {
707 printf("No zboot setup_base\n");
708 return CMD_RET_FAILURE;
709 }
710 zimage_dump(base_ptr);
Simon Glassaad0d762020-09-05 14:50:50 -0600711
712 return 0;
713}
714
Simon Glassd9b3c982020-09-05 14:50:43 -0600715/* Note: This defines the complete_zboot() function */
716U_BOOT_SUBCMDS(zboot,
Simon Glass12d93ab2020-09-05 14:50:51 -0600717 U_BOOT_CMD_MKENT(start, 8, 1, do_zboot_start, "", ""),
Simon Glass24d26f72020-09-05 14:50:46 -0600718 U_BOOT_CMD_MKENT(load, 1, 1, do_zboot_load, "", ""),
Simon Glass30634832020-09-05 14:50:47 -0600719 U_BOOT_CMD_MKENT(setup, 1, 1, do_zboot_setup, "", ""),
Simon Glass83dd29e2020-09-05 14:50:45 -0600720 U_BOOT_CMD_MKENT(info, 1, 1, do_zboot_info, "", ""),
Simon Glass1931b192020-09-05 14:50:44 -0600721 U_BOOT_CMD_MKENT(go, 1, 1, do_zboot_go, "", ""),
Simon Glassaad0d762020-09-05 14:50:50 -0600722 U_BOOT_CMD_MKENT(dump, 2, 1, do_zboot_dump, "", ""),
Simon Glassd9b3c982020-09-05 14:50:43 -0600723)
724
725int do_zboot_states(struct cmd_tbl *cmdtp, int flag, int argc,
726 char *const argv[], int state_mask)
727{
728 int i;
729
730 for (i = 0; i < ZBOOT_STATE_COUNT; i++) {
731 struct cmd_tbl *cmd = &zboot_subcmds[i];
732 int mask = 1 << i;
733 int ret;
734
735 if (mask & state_mask) {
736 ret = cmd->cmd(cmd, flag, argc, argv);
737 if (ret)
738 return ret;
739 }
740 }
741
742 return 0;
743}
744
745int do_zboot_parent(struct cmd_tbl *cmdtp, int flag, int argc,
746 char *const argv[], int *repeatable)
747{
748 /* determine if we have a sub command */
749 if (argc > 1) {
750 char *endp;
751
752 simple_strtoul(argv[1], &endp, 16);
753 /*
754 * endp pointing to nul means that argv[1] was just a valid
755 * number, so pass it along to the normal processing
756 */
757 if (*endp)
758 return do_zboot(cmdtp, flag, argc, argv, repeatable);
759 }
760
Simon Glass1931b192020-09-05 14:50:44 -0600761 do_zboot_states(cmdtp, flag, argc, argv, ZBOOT_STATE_START |
Simon Glass30634832020-09-05 14:50:47 -0600762 ZBOOT_STATE_LOAD | ZBOOT_STATE_SETUP |
763 ZBOOT_STATE_INFO | ZBOOT_STATE_GO);
Simon Glassd9b3c982020-09-05 14:50:43 -0600764
765 return CMD_RET_FAILURE;
766}
767
768U_BOOT_CMDREP_COMPLETE(
Simon Glass12d93ab2020-09-05 14:50:51 -0600769 zboot, 8, do_zboot_parent, "Boot bzImage",
770 "[addr] [size] [initrd addr] [initrd size] [setup] [cmdline]\n"
Gabe Black69b49ee2011-12-05 12:09:27 +0000771 " addr - The optional starting address of the bzimage.\n"
772 " If not set it defaults to the environment\n"
773 " variable \"fileaddr\".\n"
774 " size - The optional size of the bzimage. Defaults to\n"
775 " zero.\n"
776 " initrd addr - The address of the initrd image to use, if any.\n"
777 " initrd size - The size of the initrd image to use, if any.\n"
Simon Glassc55ce682020-09-05 14:50:49 -0600778 " setup - The address of the kernel setup region, if this\n"
779 " is not at addr\n"
Simon Glass5e956d12020-11-09 07:12:24 -0700780 " cmdline - Environment variable containing the kernel\n"
781 " command line, to override U-Boot's normal\n"
782 " cmdline generation\n"
Simon Glassd9b3c982020-09-05 14:50:43 -0600783 "\n"
784 "Sub-commands to do part of the zboot sequence:\n"
Simon Glass1931b192020-09-05 14:50:44 -0600785 "\tstart [addr [arg ...]] - specify arguments\n"
Simon Glass24d26f72020-09-05 14:50:46 -0600786 "\tload - load OS image\n"
Simon Glass30634832020-09-05 14:50:47 -0600787 "\tsetup - set up table\n"
Simon Glass83dd29e2020-09-05 14:50:45 -0600788 "\tinfo - show summary info\n"
Simon Glassaad0d762020-09-05 14:50:50 -0600789 "\tgo - start OS\n"
790 "\tdump [addr] - dump info (optional address of boot params)",
Simon Glassd9b3c982020-09-05 14:50:43 -0600791 complete_zboot
Graeme Russ1bab1042010-04-24 00:05:49 +1000792);