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 <lmb.h> 12 #include <mapmem.h> 13 #include <linux/kernel.h> 14 #include <linux/sizes.h> 15 16 /* 17 * Image booting support 18 */ 19 static int booti_start(cmd_tbl_t *cmdtp, int flag, int argc, 20 char * const argv[], bootm_headers_t *images) 21 { 22 int ret; 23 ulong ld; 24 ulong relocated_addr; 25 ulong image_size; 26 27 ret = do_bootm_states(cmdtp, flag, argc, argv, BOOTM_STATE_START, 28 images, 1); 29 30 /* Setup Linux kernel Image entry point */ 31 if (!argc) { 32 ld = load_addr; 33 debug("* kernel: default image load address = 0x%08lx\n", 34 load_addr); 35 } else { 36 ld = simple_strtoul(argv[0], NULL, 16); 37 debug("* kernel: cmdline image address = 0x%08lx\n", ld); 38 } 39 40 ret = booti_setup(ld, &relocated_addr, &image_size, false); 41 if (ret != 0) 42 return 1; 43 44 /* Handle BOOTM_STATE_LOADOS */ 45 if (relocated_addr != ld) { 46 debug("Moving Image from 0x%lx to 0x%lx\n", ld, relocated_addr); 47 memmove((void *)relocated_addr, (void *)ld, image_size); 48 } 49 50 images->ep = relocated_addr; 51 lmb_reserve(&images->lmb, images->ep, le32_to_cpu(image_size)); 52 53 /* 54 * Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not 55 * have a header that provide this informaiton. 56 */ 57 if (bootm_find_images(flag, argc, argv)) 58 return 1; 59 60 return 0; 61 } 62 63 int do_booti(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 64 { 65 int ret; 66 67 /* Consume 'booti' */ 68 argc--; argv++; 69 70 if (booti_start(cmdtp, flag, argc, argv, &images)) 71 return 1; 72 73 /* 74 * We are doing the BOOTM_STATE_LOADOS state ourselves, so must 75 * disable interrupts ourselves 76 */ 77 bootm_disable_interrupts(); 78 79 images.os.os = IH_OS_LINUX; 80 images.os.arch = IH_ARCH_ARM64; 81 ret = do_bootm_states(cmdtp, flag, argc, argv, 82 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH 83 BOOTM_STATE_RAMDISK | 84 #endif 85 BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO | 86 BOOTM_STATE_OS_GO, 87 &images, 1); 88 89 return ret; 90 } 91 92 #ifdef CONFIG_SYS_LONGHELP 93 static char booti_help_text[] = 94 "[addr [initrd[:size]] [fdt]]\n" 95 " - boot arm64 Linux Image stored in memory\n" 96 "\tThe argument 'initrd' is optional and specifies the address\n" 97 "\tof an initrd in memory. The optional parameter ':size' allows\n" 98 "\tspecifying the size of a RAW initrd.\n" 99 #if defined(CONFIG_OF_LIBFDT) 100 "\tSince booting a Linux kernel requires a flat device-tree, a\n" 101 "\tthird argument providing the address of the device-tree blob\n" 102 "\tis required. To boot a kernel with a device-tree blob but\n" 103 "\twithout an initrd image, use a '-' for the initrd argument.\n" 104 #endif 105 ""; 106 #endif 107 108 U_BOOT_CMD( 109 booti, CONFIG_SYS_MAXARGS, 1, do_booti, 110 "boot arm64 Linux Image image from memory", booti_help_text 111 ); 112