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 <bootm.h>
8 #include <command.h>
9 #include <image.h>
10 #include <irq_func.h>
11 #include <lmb.h>
12 #include <log.h>
13 #include <linux/compiler.h>
14
bootz_setup(ulong image,ulong * start,ulong * end)15 int __weak bootz_setup(ulong image, ulong *start, ulong *end)
16 {
17 /* Please define bootz_setup() for your platform */
18
19 puts("Your platform's zImage format isn't supported yet!\n");
20 return -1;
21 }
22
23 /*
24 * zImage booting support
25 */
bootz_start(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[],struct bootm_headers * images)26 static int bootz_start(struct cmd_tbl *cmdtp, int flag, int argc,
27 char *const argv[], struct bootm_headers *images)
28 {
29 ulong zi_start, zi_end;
30 struct bootm_info bmi;
31 phys_addr_t ep_addr;
32 int ret;
33
34 bootm_init(&bmi);
35 if (argc)
36 bmi.addr_img = argv[0];
37 if (argc > 1)
38 bmi.conf_ramdisk = argv[1];
39 if (argc > 2)
40 bmi.conf_fdt = argv[2];
41 /* do not set up argc and argv[] since nothing uses them */
42
43 ret = bootm_run_states(&bmi, BOOTM_STATE_START);
44
45 /* Setup Linux kernel zImage entry point */
46 if (!argc) {
47 images->ep = image_load_addr;
48 debug("* kernel: default image load address = 0x%08lx\n",
49 image_load_addr);
50 } else {
51 images->ep = hextoul(argv[0], NULL);
52 debug("* kernel: cmdline image address = 0x%08lx\n",
53 images->ep);
54 }
55
56 ret = bootz_setup(images->ep, &zi_start, &zi_end);
57 if (ret != 0)
58 return 1;
59
60 ep_addr = (phys_addr_t)images->ep;
61 ret = lmb_alloc_mem(LMB_MEM_ALLOC_ADDR, 0, &ep_addr, zi_end - zi_start,
62 LMB_NONE);
63 if (ret) {
64 printf("Failed to allocate memory for the image at %#llx\n",
65 (unsigned long long)images->ep);
66 return 1;
67 }
68
69 /*
70 * Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not
71 * have a header that provide this informaiton.
72 */
73 if (bootm_find_images(image_load_addr, cmd_arg1(argc, argv),
74 cmd_arg2(argc, argv), images->ep,
75 zi_end - zi_start))
76 return 1;
77
78 return 0;
79 }
80
do_bootz(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])81 int do_bootz(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
82 {
83 struct bootm_info bmi;
84 int ret;
85
86 /* Consume 'bootz' */
87 argc--; argv++;
88
89 if (bootz_start(cmdtp, flag, argc, argv, &images))
90 return 1;
91
92 /*
93 * We are doing the BOOTM_STATE_LOADOS state ourselves, so must
94 * disable interrupts ourselves
95 */
96 bootm_disable_interrupts();
97
98 images.os.os = IH_OS_LINUX;
99
100 bootm_init(&bmi);
101 if (argc)
102 bmi.addr_img = argv[0];
103 if (argc > 1)
104 bmi.conf_ramdisk = argv[1];
105 if (argc > 2)
106 bmi.conf_fdt = argv[2];
107 bmi.cmd_name = "bootz";
108
109 ret = bootz_run(&bmi);
110
111 return ret;
112 }
113
114 U_BOOT_LONGHELP(bootz,
115 "[addr [initrd[:size]] [fdt]]\n"
116 " - boot Linux zImage stored in memory\n"
117 "\tThe argument 'initrd' is optional and specifies the address\n"
118 "\tof the initrd in memory. The optional argument ':size' allows\n"
119 "\tspecifying the size of RAW initrd.\n"
120 #if defined(CONFIG_OF_LIBFDT)
121 "\tWhen booting a Linux kernel which requires a flat device-tree\n"
122 "\ta third argument is required which is the address of the\n"
123 "\tdevice-tree blob. To boot that kernel without an initrd image,\n"
124 "\tuse a '-' for the second argument. If you do not pass a third\n"
125 "\ta bd_info struct will be passed instead\n"
126 #endif
127 );
128
129 U_BOOT_CMD(
130 bootz, CONFIG_SYS_MAXARGS, 1, do_bootz,
131 "boot Linux zImage image from memory", bootz_help_text
132 );
133