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https://github.com/brain-hackers/u-boot-brain
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5a75e12107
All arches except nios2 and microblaze call boot_get_fdt from bootm_start in common/cmd_bootm.c. Having nios2 and microblaze do so as well removes code from their respective do_bootm_linux routines and allows removal of a nasty ifdef from bootm_start. In the case where boot_get_fdt returns an error bootm_start returns and the platform specific do_bootm_linux routines will never get called. Also only check argv[3] for an fdt addr if argc > 3 first. This is already the case for nios2. Signed-off-by: John Rigby <john.rigby@linaro.org> CC: Scott McNutt <smcnutt@psyent.com> CC: Michal Simek <monstr@monstr.eu> CC: Thomas Chou <thomas@wytron.com.tw> Acked-by: Wolfgang Denk <wd@denx.de> Acked-by: Michal Simek <monstr@monstr.eu> Tested-by: Thomas Chou <thomas@wytron.com.tw>
91 lines
2.5 KiB
C
91 lines
2.5 KiB
C
/*
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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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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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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[], bootm_headers_t *images)
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{
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/* First parameter is mapped to $r5 for kernel boot args */
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void (*theKernel) (char *, ulong, ulong);
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char *commandline = getenv ("bootargs");
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ulong rd_data_start, rd_data_end;
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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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theKernel = (void (*)(char *, ulong, ulong))images->ep;
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/* find ramdisk */
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ret = boot_get_ramdisk (argc, argv, images, IH_ARCH_MICROBLAZE,
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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 > 3)
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of_flat_tree = (char *)simple_strtoul(argv[3], 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) theKernel, rd_data_start, (ulong) of_flat_tree);
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#endif
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#ifdef XILINX_USE_DCACHE
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#ifdef XILINX_DCACHE_BYTE_SIZE
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flush_cache(0, XILINX_DCACHE_BYTE_SIZE);
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#else
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#warning please rebuild BSPs and update configuration
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flush_cache(0, 32768);
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#endif
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#endif
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/*
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* Linux Kernel Parameters (passing device tree):
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* r5: pointer to command line
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* r6: pointer to ramdisk
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* r7: pointer to the fdt, followed by the board info data
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*/
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theKernel (commandline, rd_data_start, (ulong) of_flat_tree);
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/* does not return */
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return 1;
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}
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