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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2000-2009
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*/
#include <common.h>
#include <bootm.h>
#include <command.h>
#include <image.h>
#include <irq_func.h>
#include <lmb.h>
#include <log.h>
#include <mapmem.h>
#include <linux/kernel.h>
#include <linux/sizes.h>
DECLARE_GLOBAL_DATA_PTR;
/*
* Image booting support
*/
static int booti_start(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[], bootm_headers_t *images)
{
int ret;
ulong ld;
ulong relocated_addr;
ulong image_size;
uint8_t *temp;
ulong dest;
ulong dest_end;
unsigned long comp_len;
unsigned long decomp_len;
int ctype;
ret = do_bootm_states(cmdtp, flag, argc, argv, BOOTM_STATE_START,
images, 1);
/* Setup Linux kernel Image entry point */
if (!argc) {
ld = image_load_addr;
debug("* kernel: default image load address = 0x%08lx\n",
image_load_addr);
} else {
ld = simple_strtoul(argv[0], NULL, 16);
debug("* kernel: cmdline image address = 0x%08lx\n", ld);
}
temp = map_sysmem(ld, 0);
ctype = image_decomp_type(temp, 2);
if (ctype > 0) {
dest = env_get_ulong("kernel_comp_addr_r", 16, 0);
comp_len = env_get_ulong("kernel_comp_size", 16, 0);
if (!dest || !comp_len) {
puts("kernel_comp_addr_r or kernel_comp_size is not provided!\n");
return -EINVAL;
}
if (dest < gd->ram_base || dest > gd->ram_top) {
puts("kernel_comp_addr_r is outside of DRAM range!\n");
return -EINVAL;
}
debug("kernel image compression type %d size = 0x%08lx address = 0x%08lx\n",
ctype, comp_len, (ulong)dest);
decomp_len = comp_len * 10;
ret = image_decomp(ctype, 0, ld, IH_TYPE_KERNEL,
(void *)dest, (void *)ld, comp_len,
decomp_len, &dest_end);
if (ret)
return ret;
/* dest_end contains the uncompressed Image size */
memmove((void *) ld, (void *)dest, dest_end);
}
unmap_sysmem((void *)ld);
ret = booti_setup(ld, &relocated_addr, &image_size, false);
if (ret != 0)
return 1;
/* Handle BOOTM_STATE_LOADOS */
if (relocated_addr != ld) {
debug("Moving Image from 0x%lx to 0x%lx\n", ld, relocated_addr);
memmove((void *)relocated_addr, (void *)ld, image_size);
}
images->ep = relocated_addr;
images->os.start = relocated_addr;
images->os.end = relocated_addr + image_size;
lmb_reserve(&images->lmb, images->ep, le32_to_cpu(image_size));
/*
* Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not
* have a header that provide this informaiton.
*/
if (bootm_find_images(flag, argc, argv))
return 1;
return 0;
}
int do_booti(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
{
int ret;
/* Consume 'booti' */
argc--; argv++;
if (booti_start(cmdtp, flag, argc, argv, &images))
return 1;
/*
* We are doing the BOOTM_STATE_LOADOS state ourselves, so must
* disable interrupts ourselves
*/
bootm_disable_interrupts();
images.os.os = IH_OS_LINUX;
#ifdef CONFIG_RISCV_SMODE
images.os.arch = IH_ARCH_RISCV;
#elif CONFIG_ARM64
images.os.arch = IH_ARCH_ARM64;
#endif
ret = do_bootm_states(cmdtp, flag, argc, argv,
#ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
BOOTM_STATE_RAMDISK |
#endif
BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO |
BOOTM_STATE_OS_GO,
&images, 1);
return ret;
}
#ifdef CONFIG_SYS_LONGHELP
static char booti_help_text[] =
"[addr [initrd[:size]] [fdt]]\n"
" - boot Linux flat or compressed 'Image' stored at 'addr'\n"
"\tThe argument 'initrd' is optional and specifies the address\n"
"\tof an initrd in memory. The optional parameter ':size' allows\n"
"\tspecifying the size of a RAW initrd.\n"
"\tCurrently only booting from gz, bz2, lzma and lz4 compression\n"
"\ttypes are supported. In order to boot from any of these compressed\n"
"\timages, user have to set kernel_comp_addr_r and kernel_comp_size enviornment\n"
"\tvariables beforehand.\n"
#if defined(CONFIG_OF_LIBFDT)
"\tSince booting a Linux kernel requires a flat device-tree, a\n"
"\tthird argument providing the address of the device-tree blob\n"
"\tis required. To boot a kernel with a device-tree blob but\n"
"\twithout an initrd image, use a '-' for the initrd argument.\n"
#endif
"";
#endif
U_BOOT_CMD(
booti, CONFIG_SYS_MAXARGS, 1, do_booti,
"boot Linux kernel 'Image' format from memory", booti_help_text
);
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