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 <asm/global_data.h> 16#include <linux/kernel.h> 17#include <linux/sizes.h> 18 19DECLARE_GLOBAL_DATA_PTR; 20/* 21 * Image booting support 22 */ 23static int booti_start(struct bootm_info *bmi) 24{ 25 struct bootm_headers *images = bmi->images; 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 = bootm_run_states(bmi, BOOTM_STATE_START); 38 39 /* Setup Linux kernel Image entry point */ 40 if (!bmi->addr_img) { 41 ld = image_load_addr; 42 debug("* kernel: default image load address = 0x%08lx\n", 43 image_load_addr); 44 } else { 45 ld = hextoul(bmi->addr_img, NULL); 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) 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(image_load_addr, bmi->conf_ramdisk, bmi->conf_fdt, 98 relocated_addr, image_size)) 99 return 1; 100 101 return 0; 102} 103 104int do_booti(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) 105{ 106 struct bootm_info bmi; 107 int states; 108 int ret; 109 110 /* Consume 'booti' */ 111 argc--; argv++; 112 113 bootm_init(&bmi); 114 if (argc) 115 bmi.addr_img = argv[0]; 116 if (argc > 1) 117 bmi.conf_ramdisk = argv[1]; 118 if (argc > 2) 119 bmi.conf_fdt = argv[2]; 120 bmi.boot_progress = true; 121 bmi.cmd_name = "booti"; 122 /* do not set up argc and argv[] since nothing uses them */ 123 124 if (booti_start(&bmi)) 125 return 1; 126 127 /* 128 * We are doing the BOOTM_STATE_LOADOS state ourselves, so must 129 * disable interrupts ourselves 130 */ 131 bootm_disable_interrupts(); 132 133 images.os.os = IH_OS_LINUX; 134 if (IS_ENABLED(CONFIG_RISCV_SMODE)) 135 images.os.arch = IH_ARCH_RISCV; 136 else if (IS_ENABLED(CONFIG_ARM64)) 137 images.os.arch = IH_ARCH_ARM64; 138 139 states = BOOTM_STATE_MEASURE | BOOTM_STATE_OS_PREP | 140 BOOTM_STATE_OS_FAKE_GO | BOOTM_STATE_OS_GO; 141 if (IS_ENABLED(CONFIG_SYS_BOOT_RAMDISK_HIGH)) 142 states |= BOOTM_STATE_RAMDISK; 143 144 ret = bootm_run_states(&bmi, states); 145 146 return ret; 147} 148 149U_BOOT_LONGHELP(booti, 150 "[addr [initrd[:size]] [fdt]]\n" 151 " - boot Linux flat or compressed 'Image' stored at 'addr'\n" 152 "\tThe argument 'initrd' is optional and specifies the address\n" 153 "\tof an initrd in memory. The optional parameter ':size' allows\n" 154 "\tspecifying the size of a RAW initrd.\n" 155 "\tCurrently only booting from gz, bz2, lzma and lz4 compression\n" 156 "\ttypes are supported. In order to boot from any of these compressed\n" 157 "\timages, user have to set kernel_comp_addr_r and kernel_comp_size environment\n" 158 "\tvariables beforehand.\n" 159#if defined(CONFIG_OF_LIBFDT) 160 "\tSince booting a Linux kernel requires a flat device-tree, a\n" 161 "\tthird argument providing the address of the device-tree blob\n" 162 "\tis required. To boot a kernel with a device-tree blob but\n" 163 "\twithout an initrd image, use a '-' for the initrd argument.\n" 164#endif 165 ); 166 167U_BOOT_CMD( 168 booti, CONFIG_SYS_MAXARGS, 1, do_booti, 169 "boot Linux kernel 'Image' format from memory", booti_help_text 170); 171