u-boot/cmd/booti.c
Atish Patra 3cedc97479 RISCV: image: Add booti support
This patch adds booti support for RISC-V Linux kernel. The existing
bootm method will also continue to work as it is.

It depends on the following kernel patch which adds the header to the
flat Image. Gzip compressed Image (Image.gz) support is not enabled with
this patch.

https://patchwork.kernel.org/patch/10925543/

Tested on HiFive Unleashed and QEMU.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Tested-by: Karsten Merker <merker@debian.org>
Reviewed-by: Marek Vasut <marek.vasut@gmail.com>
2019-05-09 16:47:52 +08:00

115 lines
2.8 KiB
C

// 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 <lmb.h>
#include <mapmem.h>
#include <linux/kernel.h>
#include <linux/sizes.h>
/*
* Image booting support
*/
static int booti_start(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[], bootm_headers_t *images)
{
int ret;
ulong ld;
ulong relocated_addr;
ulong image_size;
ret = do_bootm_states(cmdtp, flag, argc, argv, BOOTM_STATE_START,
images, 1);
/* Setup Linux kernel Image entry point */
if (!argc) {
ld = load_addr;
debug("* kernel: default image load address = 0x%08lx\n",
load_addr);
} else {
ld = simple_strtoul(argv[0], NULL, 16);
debug("* kernel: cmdline image address = 0x%08lx\n", 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;
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(cmd_tbl_t *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 '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"
#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
);