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/*
* (C) Copyright 2011 Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
*
* Based on microblaze implementation by:
* (C) Copyright 2007 Michal Simek
* (C) Copyright 2004 Atmark Techno, Inc.
*
* Michal SIMEK <monstr@monstr.eu>
* Yasushi SHOJI <yashi@atmark-techno.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <command.h>
#include <image.h>
#include <u-boot/zlib.h>
#include <asm/byteorder.h>
DECLARE_GLOBAL_DATA_PTR;
int do_bootm_linux(int flag, int argc, char * const argv[],
bootm_headers_t *images)
{
void (*kernel) (unsigned int);
ulong rd_data_start, rd_data_end;
/*
* allow the PREP bootm subcommand, it is required for bootm to work
*/
if (flag & BOOTM_STATE_OS_PREP)
return 0;
if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
return 1;
int ret;
char *of_flat_tree = NULL;
#if defined(CONFIG_OF_LIBFDT)
/* did generic code already find a device tree? */
if (images->ft_len)
of_flat_tree = images->ft_addr;
#endif
kernel = (void (*)(unsigned int))images->ep;
/* find ramdisk */
ret = boot_get_ramdisk(argc, argv, images, IH_ARCH_OPENRISC,
&rd_data_start, &rd_data_end);
if (ret)
return 1;
show_boot_progress(15);
if (!of_flat_tree && argc > 1)
of_flat_tree = (char *)simple_strtoul(argv[1], NULL, 16);
#ifdef DEBUG
printf("## Transferring control to Linux (at address 0x%08lx) " \
"ramdisk 0x%08lx, FDT 0x%08lx...\n",
(ulong) kernel, rd_data_start, (ulong) of_flat_tree);
#endif
if (dcache_status() || icache_status())
flush_cache((ulong)kernel, max(checkdcache(), checkicache()));
/*
* Linux Kernel Parameters (passing device tree):
* r3: pointer to the fdt, followed by the board info data
*/
kernel((unsigned int) of_flat_tree);
/* does not return */
return 1;
}
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