1 // SPDX-License-Identifier: GPL-2.0+
3 * (C) Copyright 2000-2009
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
14 #include <linux/compiler.h>
16 int __weak bootz_setup(ulong image, ulong *start, ulong *end)
18 /* Please define bootz_setup() for your platform */
20 puts("Your platform's zImage format isn't supported yet!\n");
25 * zImage booting support
27 static int bootz_start(struct cmd_tbl *cmdtp, int flag, int argc,
28 char *const argv[], bootm_headers_t *images)
31 ulong zi_start, zi_end;
33 ret = do_bootm_states(cmdtp, flag, argc, argv, BOOTM_STATE_START,
36 /* Setup Linux kernel zImage entry point */
38 images->ep = image_load_addr;
39 debug("* kernel: default image load address = 0x%08lx\n",
42 images->ep = hextoul(argv[0], NULL);
43 debug("* kernel: cmdline image address = 0x%08lx\n",
47 ret = bootz_setup(images->ep, &zi_start, &zi_end);
51 lmb_reserve(&images->lmb, images->ep, zi_end - zi_start);
54 * Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not
55 * have a header that provide this informaiton.
57 if (bootm_find_images(flag, argc, argv, images->ep, zi_end - zi_start))
63 int do_bootz(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
70 if (bootz_start(cmdtp, flag, argc, argv, &images))
74 * We are doing the BOOTM_STATE_LOADOS state ourselves, so must
75 * disable interrupts ourselves
77 bootm_disable_interrupts();
79 images.os.os = IH_OS_LINUX;
80 ret = do_bootm_states(cmdtp, flag, argc, argv,
81 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
84 BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO |
91 #ifdef CONFIG_SYS_LONGHELP
92 static char bootz_help_text[] =
93 "[addr [initrd[:size]] [fdt]]\n"
94 " - boot Linux zImage stored in memory\n"
95 "\tThe argument 'initrd' is optional and specifies the address\n"
96 "\tof the initrd in memory. The optional argument ':size' allows\n"
97 "\tspecifying the size of RAW initrd.\n"
98 #if defined(CONFIG_OF_LIBFDT)
99 "\tWhen booting a Linux kernel which requires a flat device-tree\n"
100 "\ta third argument is required which is the address of the\n"
101 "\tdevice-tree blob. To boot that kernel without an initrd image,\n"
102 "\tuse a '-' for the second argument. If you do not pass a third\n"
103 "\ta bd_info struct will be passed instead\n"
109 bootz, CONFIG_SYS_MAXARGS, 1, do_bootz,
110 "boot Linux zImage image from memory", bootz_help_text