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