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