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 <mapmem.h>
  14 #include <linux/kernel.h>
  15 #include <linux/sizes.h>
  16
  17 /*
  18  * Image booting support
  19  */
  20 static int booti_start(cmd_tbl_t *cmdtp, int flag, int argc,
  21                         char * const argv[], bootm_headers_t *images)
  22 {
  23         int ret;
  24         ulong ld;
  25         ulong relocated_addr;
  26         ulong image_size;
  27
  28         ret = do_bootm_states(cmdtp, flag, argc, argv, BOOTM_STATE_START,
  29                               images, 1);
  30
  31         /* Setup Linux kernel Image entry point */
  32         if (!argc) {
  33                 ld = image_load_addr;
  34                 debug("*  kernel: default image load address = 0x%08lx\n",
  35                                 image_load_addr);
  36         } else {
  37                 ld = simple_strtoul(argv[0], NULL, 16);
  38                 debug("*  kernel: cmdline image address = 0x%08lx\n", ld);
  39         }
  40
  41         ret = booti_setup(ld, &relocated_addr, &image_size, false);
  42         if (ret != 0)
  43                 return 1;
  44
  45         /* Handle BOOTM_STATE_LOADOS */
  46         if (relocated_addr != ld) {
  47                 debug("Moving Image from 0x%lx to 0x%lx\n", ld, relocated_addr);
  48                 memmove((void *)relocated_addr, (void *)ld, image_size);
  49         }
  50
  51         images->ep = relocated_addr;
  52         images->os.start = relocated_addr;
  53         images->os.end = relocated_addr + image_size;
  54
  55         lmb_reserve(&images->lmb, images->ep, le32_to_cpu(image_size));
  56
  57         /*
  58          * Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not
  59          * have a header that provide this informaiton.
  60          */
  61         if (bootm_find_images(flag, argc, argv))
  62                 return 1;
  63
  64         return 0;
  65 }
  66
  67 int do_booti(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  68 {
  69         int ret;
  70
  71         /* Consume 'booti' */
  72         argc--; argv++;
  73
  74         if (booti_start(cmdtp, flag, argc, argv, &images))
  75                 return 1;
  76
  77         /*
  78          * We are doing the BOOTM_STATE_LOADOS state ourselves, so must
  79          * disable interrupts ourselves
  80          */
  81         bootm_disable_interrupts();
  82
  83         images.os.os = IH_OS_LINUX;
  84 #ifdef CONFIG_RISCV_SMODE
  85         images.os.arch = IH_ARCH_RISCV;
  86 #elif CONFIG_ARM64
  87         images.os.arch = IH_ARCH_ARM64;
  88 #endif
  89         ret = do_bootm_states(cmdtp, flag, argc, argv,
  90 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
  91                               BOOTM_STATE_RAMDISK |
  92 #endif
  93                               BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO |
  94                               BOOTM_STATE_OS_GO,
  95                               &images, 1);
  96
  97         return ret;
  98 }
  99
 100 #ifdef CONFIG_SYS_LONGHELP
 101 static char booti_help_text[] =
 102         "[addr [initrd[:size]] [fdt]]\n"
 103         "    - boot Linux 'Image' stored at 'addr'\n"
 104         "\tThe argument 'initrd' is optional and specifies the address\n"
 105         "\tof an initrd in memory. The optional parameter ':size' allows\n"
 106         "\tspecifying the size of a RAW initrd.\n"
 107 #if defined(CONFIG_OF_LIBFDT)
 108         "\tSince booting a Linux kernel requires a flat device-tree, a\n"
 109         "\tthird argument providing the address of the device-tree blob\n"
 110         "\tis required. To boot a kernel with a device-tree blob but\n"
 111         "\twithout an initrd image, use a '-' for the initrd argument.\n"
 112 #endif
 113         "";
 114 #endif
 115
 116 U_BOOT_CMD(
 117         booti,  CONFIG_SYS_MAXARGS,     1,      do_booti,
 118         "boot Linux kernel 'Image' format from memory", booti_help_text
 119 );