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 <lmb.h> 11 #include <linux/compiler.h> 12 13 int __weak bootz_setup(ulong image, ulong *start, ulong *end) 14 { 15 /* Please define bootz_setup() for your platform */ 16 17 puts("Your platform's zImage format isn't supported yet!\n"); 18 return -1; 19 } 20 21 /* 22 * zImage booting support 23 */ 24 static int bootz_start(cmd_tbl_t *cmdtp, int flag, int argc, 25 char * const argv[], bootm_headers_t *images) 26 { 27 int ret; 28 ulong zi_start, zi_end; 29 30 ret = do_bootm_states(cmdtp, flag, argc, argv, BOOTM_STATE_START, 31 images, 1); 32 33 /* Setup Linux kernel zImage entry point */ 34 if (!argc) { 35 images->ep = load_addr; 36 debug("* kernel: default image load address = 0x%08lx\n", 37 load_addr); 38 } else { 39 images->ep = simple_strtoul(argv[0], NULL, 16); 40 debug("* kernel: cmdline image address = 0x%08lx\n", 41 images->ep); 42 } 43 44 ret = bootz_setup(images->ep, &zi_start, &zi_end); 45 if (ret != 0) 46 return 1; 47 48 lmb_reserve(&images->lmb, images->ep, zi_end - zi_start); 49 50 /* 51 * Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not 52 * have a header that provide this informaiton. 53 */ 54 if (bootm_find_images(flag, argc, argv)) 55 return 1; 56 57 return 0; 58 } 59 60 int do_bootz(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 61 { 62 int ret; 63 64 /* Consume 'bootz' */ 65 argc--; argv++; 66 67 if (bootz_start(cmdtp, flag, argc, argv, &images)) 68 return 1; 69 70 /* 71 * We are doing the BOOTM_STATE_LOADOS state ourselves, so must 72 * disable interrupts ourselves 73 */ 74 bootm_disable_interrupts(); 75 76 images.os.os = IH_OS_LINUX; 77 ret = do_bootm_states(cmdtp, flag, argc, argv, 78 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH 79 BOOTM_STATE_RAMDISK | 80 #endif 81 BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO | 82 BOOTM_STATE_OS_GO, 83 &images, 1); 84 85 return ret; 86 } 87 88 #ifdef CONFIG_SYS_LONGHELP 89 static char bootz_help_text[] = 90 "[addr [initrd[:size]] [fdt]]\n" 91 " - boot Linux zImage stored in memory\n" 92 "\tThe argument 'initrd' is optional and specifies the address\n" 93 "\tof the initrd in memory. The optional argument ':size' allows\n" 94 "\tspecifying the size of RAW initrd.\n" 95 #if defined(CONFIG_OF_LIBFDT) 96 "\tWhen booting a Linux kernel which requires a flat device-tree\n" 97 "\ta third argument is required which is the address of the\n" 98 "\tdevice-tree blob. To boot that kernel without an initrd image,\n" 99 "\tuse a '-' for the second argument. If you do not pass a third\n" 100 "\ta bd_info struct will be passed instead\n" 101 #endif 102 ""; 103 #endif 104 105 U_BOOT_CMD( 106 bootz, CONFIG_SYS_MAXARGS, 1, do_bootz, 107 "boot Linux zImage image from memory", bootz_help_text 108 ); 109