cmd/booti.c

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