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wdenk12490652004-04-18 21:13:41 +00001/*
Michal Simek922ce202007-03-11 13:48:24 +01002 * (C) Copyright 2007 Michal Simek
wdenk12490652004-04-18 21:13:41 +00003 * (C) Copyright 2004 Atmark Techno, Inc.
4 *
Michal Simek922ce202007-03-11 13:48:24 +01005 * Michal SIMEK <monstr@monstr.eu>
wdenk12490652004-04-18 21:13:41 +00006 * Yasushi SHOJI <yashi@atmark-techno.com>
7 *
8 * See file CREDITS for list of people who contributed to this
9 * project.
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
Michal Simek922ce202007-03-11 13:48:24 +010018 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
wdenk12490652004-04-18 21:13:41 +000019 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24 * MA 02111-1307 USA
25 */
26
27#include <common.h>
28#include <command.h>
Michal Simek922ce202007-03-11 13:48:24 +010029#include <image.h>
Jean-Christophe PLAGNIOL-VILLARD6bb94492009-04-04 12:49:11 +020030#include <u-boot/zlib.h>
Michal Simek922ce202007-03-11 13:48:24 +010031#include <asm/byteorder.h>
wdenk12490652004-04-18 21:13:41 +000032
Michal Simek922ce202007-03-11 13:48:24 +010033DECLARE_GLOBAL_DATA_PTR;
34
Michal Simekc78ce292013-05-02 12:51:48 +020035int do_bootm_linux(int flag, int argc, char * const argv[],
36 bootm_headers_t *images)
wdenk12490652004-04-18 21:13:41 +000037{
Michal Simek922ce202007-03-11 13:48:24 +010038 /* First parameter is mapped to $r5 for kernel boot args */
Michal Simekc78ce292013-05-02 12:51:48 +020039 void (*thekernel) (char *, ulong, ulong);
40 char *commandline = getenv("bootargs");
Arun Bhanu2304c052010-04-15 18:27:17 +080041 ulong rd_data_start, rd_data_end;
Michal Simek922ce202007-03-11 13:48:24 +010042
Kumar Gala18178bc2008-10-21 17:25:45 -050043 if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
44 return 1;
45
Arun Bhanu2304c052010-04-15 18:27:17 +080046 int ret;
47
48 char *of_flat_tree = NULL;
49#if defined(CONFIG_OF_LIBFDT)
John Rigby708e6672010-10-13 13:57:34 -060050 /* did generic code already find a device tree? */
51 if (images->ft_len)
52 of_flat_tree = images->ft_addr;
Arun Bhanu2304c052010-04-15 18:27:17 +080053#endif
54
Michal Simekc78ce292013-05-02 12:51:48 +020055 thekernel = (void (*)(char *, ulong, ulong))images->ep;
Arun Bhanu2304c052010-04-15 18:27:17 +080056
57 /* find ramdisk */
Michal Simekc78ce292013-05-02 12:51:48 +020058 ret = boot_get_ramdisk(argc, argv, images, IH_ARCH_MICROBLAZE,
Arun Bhanu2304c052010-04-15 18:27:17 +080059 &rd_data_start, &rd_data_end);
60 if (ret)
61 return 1;
Michal Simek922ce202007-03-11 13:48:24 +010062
Simon Glass0169e6b2012-02-13 13:51:18 +000063 bootstage_mark(BOOTSTAGE_ID_RUN_OS);
Michal Simek922ce202007-03-11 13:48:24 +010064
John Rigby708e6672010-10-13 13:57:34 -060065 if (!of_flat_tree && argc > 3)
66 of_flat_tree = (char *)simple_strtoul(argv[3], NULL, 16);
Michal Simek70b1c492013-05-02 12:49:18 +020067
68 /* fixup the initrd now that we know where it should be */
69 if (images->rd_start && images->rd_end && of_flat_tree)
70 ret = fdt_initrd(of_flat_tree, images->rd_start,
71 images->rd_end, 1);
72 if (ret)
73 return 1;
74
Michal Simek922ce202007-03-11 13:48:24 +010075#ifdef DEBUG
Michal Simekc78ce292013-05-02 12:51:48 +020076 printf("## Transferring control to Linux (at address 0x%08lx) ",
77 (ulong)thekernel);
78 printf("ramdisk 0x%08lx, FDT 0x%08lx...\n",
79 rd_data_start, (ulong) of_flat_tree);
Michal Simek922ce202007-03-11 13:48:24 +010080#endif
81
Michal Simek80c42c72010-04-16 12:01:32 +020082#ifdef XILINX_USE_DCACHE
Michal Simek80c42c72010-04-16 12:01:32 +020083 flush_cache(0, XILINX_DCACHE_BYTE_SIZE);
Michal Simek80c42c72010-04-16 12:01:32 +020084#endif
Arun Bhanu2304c052010-04-15 18:27:17 +080085 /*
86 * Linux Kernel Parameters (passing device tree):
87 * r5: pointer to command line
88 * r6: pointer to ramdisk
89 * r7: pointer to the fdt, followed by the board info data
90 */
Michal Simekc78ce292013-05-02 12:51:48 +020091 thekernel(commandline, rd_data_start, (ulong)of_flat_tree);
Marian Balakowiczdf8ff332008-03-12 10:33:00 +010092 /* does not return */
Jean-Christophe PLAGNIOL-VILLARD7ed7a272008-09-10 22:48:09 +020093
Kumar Gala48626aa2008-08-15 08:24:45 -050094 return 1;
wdenk12490652004-04-18 21:13:41 +000095}