1 /* 2 * (C) Copyright 2000-2009 3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 #include <common.h> 9 #include <bootm.h> 10 #include <command.h> 11 #include <lmb.h> 12 #include <linux/compiler.h> 13 14 int __weak bootz_setup(ulong image, ulong *start, ulong *end) 15 { 16 /* Please define bootz_setup() for your platform */ 17 18 puts("Your platform's zImage format isn't supported yet!\n"); 19 return -1; 20 } 21 22 /* 23 * zImage booting support 24 */ 25 static int bootz_start(cmd_tbl_t *cmdtp, int flag, int argc, 26 char * const argv[], bootm_headers_t *images) 27 { 28 int ret; 29 ulong zi_start, zi_end; 30 31 ret = do_bootm_states(cmdtp, flag, argc, argv, BOOTM_STATE_START, 32 images, 1); 33 34 /* Setup Linux kernel zImage entry point */ 35 if (!argc) { 36 images->ep = load_addr; 37 debug("* kernel: default image load address = 0x%08lx\n", 38 load_addr); 39 } else { 40 images->ep = simple_strtoul(argv[0], NULL, 16); 41 debug("* kernel: cmdline image address = 0x%08lx\n", 42 images->ep); 43 } 44 45 ret = bootz_setup(images->ep, &zi_start, &zi_end); 46 if (ret != 0) 47 return 1; 48 49 lmb_reserve(&images->lmb, images->ep, zi_end - zi_start); 50 51 /* 52 * Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not 53 * have a header that provide this informaiton. 54 */ 55 if (bootm_find_images(flag, argc, argv)) 56 return 1; 57 58 return 0; 59 } 60 61 int do_bootz(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 62 { 63 int ret; 64 65 /* Consume 'bootz' */ 66 argc--; argv++; 67 68 if (bootz_start(cmdtp, flag, argc, argv, &images)) 69 return 1; 70 71 /* 72 * We are doing the BOOTM_STATE_LOADOS state ourselves, so must 73 * disable interrupts ourselves 74 */ 75 bootm_disable_interrupts(); 76 77 images.os.os = IH_OS_LINUX; 78 ret = do_bootm_states(cmdtp, flag, argc, argv, 79 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH 80 BOOTM_STATE_RAMDISK | 81 #endif 82 BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO | 83 BOOTM_STATE_OS_GO, 84 &images, 1); 85 86 return ret; 87 } 88 89 #ifdef CONFIG_SYS_LONGHELP 90 static char bootz_help_text[] = 91 "[addr [initrd[:size]] [fdt]]\n" 92 " - boot Linux zImage stored in memory\n" 93 "\tThe argument 'initrd' is optional and specifies the address\n" 94 "\tof the initrd in memory. The optional argument ':size' allows\n" 95 "\tspecifying the size of RAW initrd.\n" 96 #if defined(CONFIG_OF_LIBFDT) 97 "\tWhen booting a Linux kernel which requires a flat device-tree\n" 98 "\ta third argument is required which is the address of the\n" 99 "\tdevice-tree blob. To boot that kernel without an initrd image,\n" 100 "\tuse a '-' for the second argument. If you do not pass a third\n" 101 "\ta bd_info struct will be passed instead\n" 102 #endif 103 ""; 104 #endif 105 106 U_BOOT_CMD( 107 bootz, CONFIG_SYS_MAXARGS, 1, do_bootz, 108 "boot Linux zImage image from memory", bootz_help_text 109 ); 110