cmd/booti.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2000-2009
   4  * Wolfgang Denk, DENX Software Engineering, [email protected].
   5  */
   6
   7 #include <common.h>
   8 #include <bootm.h>
   9 #include <command.h>
  10 #include <image.h>
  11 #include <irq_func.h>
  12 #include <lmb.h>
  13 #include <log.h>
  14 #include <mapmem.h>
  15 #include <asm/global_data.h>
  16 #include <linux/kernel.h>
  17 #include <linux/sizes.h>
  18
  19 DECLARE_GLOBAL_DATA_PTR;
  20 /*
  21  * Image booting support
  22  */
  23 static int booti_start(struct cmd_tbl *cmdtp, int flag, int argc,
  24                        char *const argv[], struct bootm_headers *images)
  25 {
  26         int ret;
  27         ulong ld;
  28         ulong relocated_addr;
  29         ulong image_size;
  30         uint8_t *temp;
  31         ulong dest;
  32         ulong dest_end;
  33         unsigned long comp_len;
  34         unsigned long decomp_len;
  35         int ctype;
  36
  37         ret = do_bootm_states(cmdtp, flag, argc, argv, BOOTM_STATE_START,
  38                               images, 1);
  39
  40         /* Setup Linux kernel Image entry point */
  41         if (!argc) {
  42                 ld = image_load_addr;
  43                 debug("*  kernel: default image load address = 0x%08lx\n",
  44                                 image_load_addr);
  45         } else {
  46                 ld = hextoul(argv[0], NULL);
  47                 debug("*  kernel: cmdline image address = 0x%08lx\n", ld);
  48         }
  49
  50         temp = map_sysmem(ld, 0);
  51         ctype = image_decomp_type(temp, 2);
  52         if (ctype > 0) {
  53                 dest = env_get_ulong("kernel_comp_addr_r", 16, 0);
  54                 comp_len = env_get_ulong("kernel_comp_size", 16, 0);
  55                 if (!dest || !comp_len) {
  56                         puts("kernel_comp_addr_r or kernel_comp_size is not provided!\n");
  57                         return -EINVAL;
  58                 }
  59                 if (dest < gd->ram_base || dest > gd->ram_top) {
  60                         puts("kernel_comp_addr_r is outside of DRAM range!\n");
  61                         return -EINVAL;
  62                 }
  63
  64                 debug("kernel image compression type %d size = 0x%08lx address = 0x%08lx\n",
  65                         ctype, comp_len, (ulong)dest);
  66                 decomp_len = comp_len * 10;
  67                 ret = image_decomp(ctype, 0, ld, IH_TYPE_KERNEL,
  68                                  (void *)dest, (void *)ld, comp_len,
  69                                  decomp_len, &dest_end);
  70                 if (ret)
  71                         return ret;
  72                 /* dest_end contains the uncompressed Image size */
  73                 memmove((void *) ld, (void *)dest, dest_end);
  74         }
  75         unmap_sysmem((void *)ld);
  76
  77         ret = booti_setup(ld, &relocated_addr, &image_size, false);
  78         if (ret != 0)
  79                 return 1;
  80
  81         /* Handle BOOTM_STATE_LOADOS */
  82         if (relocated_addr != ld) {
  83                 printf("Moving Image from 0x%lx to 0x%lx, end=%lx\n", ld,
  84                        relocated_addr, relocated_addr + image_size);
  85                 memmove((void *)relocated_addr, (void *)ld, image_size);
  86         }
  87
  88         images->ep = relocated_addr;
  89         images->os.start = relocated_addr;
  90         images->os.end = relocated_addr + image_size;
  91
  92         lmb_reserve(&images->lmb, images->ep, le32_to_cpu(image_size));
  93
  94         /*
  95          * Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not
  96          * have a header that provide this informaiton.
  97          */
  98         if (bootm_find_images(image_load_addr, argc > 1 ? argv[1] : NULL,
  99                               argc > 2 ? argv[2] : NULL, relocated_addr,
 100                               image_size))
 101                 return 1;
 102
 103         return 0;
 104 }
 105
 106 int do_booti(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 107 {
 108         int ret;
 109
 110         /* Consume 'booti' */
 111         argc--; argv++;
 112
 113         if (booti_start(cmdtp, flag, argc, argv, &images))
 114                 return 1;
 115
 116         /*
 117          * We are doing the BOOTM_STATE_LOADOS state ourselves, so must
 118          * disable interrupts ourselves
 119          */
 120         bootm_disable_interrupts();
 121
 122         images.os.os = IH_OS_LINUX;
 123 #ifdef CONFIG_RISCV_SMODE
 124         images.os.arch = IH_ARCH_RISCV;
 125 #elif CONFIG_ARM64
 126         images.os.arch = IH_ARCH_ARM64;
 127 #endif
 128         ret = do_bootm_states(cmdtp, flag, argc, argv,
 129 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
 130                               BOOTM_STATE_RAMDISK |
 131 #endif
 132                               BOOTM_STATE_MEASURE |
 133                               BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO |
 134                               BOOTM_STATE_OS_GO,
 135                               &images, 1);
 136
 137         return ret;
 138 }
 139
 140 U_BOOT_LONGHELP(booti,
 141         "[addr [initrd[:size]] [fdt]]\n"
 142         "    - boot Linux flat or compressed 'Image' stored at 'addr'\n"
 143         "\tThe argument 'initrd' is optional and specifies the address\n"
 144         "\tof an initrd in memory. The optional parameter ':size' allows\n"
 145         "\tspecifying the size of a RAW initrd.\n"
 146         "\tCurrently only booting from gz, bz2, lzma and lz4 compression\n"
 147         "\ttypes are supported. In order to boot from any of these compressed\n"
 148         "\timages, user have to set kernel_comp_addr_r and kernel_comp_size environment\n"
 149         "\tvariables beforehand.\n"
 150 #if defined(CONFIG_OF_LIBFDT)
 151         "\tSince booting a Linux kernel requires a flat device-tree, a\n"
 152         "\tthird argument providing the address of the device-tree blob\n"
 153         "\tis required. To boot a kernel with a device-tree blob but\n"
 154         "\twithout an initrd image, use a '-' for the initrd argument.\n"
 155 #endif
 156         );
 157
 158 U_BOOT_CMD(
 159         booti,  CONFIG_SYS_MAXARGS,     1,      do_booti,
 160         "boot Linux kernel 'Image' format from memory", booti_help_text
 161 );