| Stefan Kristiansson | cfbf96b | 2011-11-26 19:04:52 +0000 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2011 Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> |
| 3 | * |
| 4 | * Based on microblaze implementation by: |
| 5 | * (C) Copyright 2007 Michal Simek |
| 6 | * (C) Copyright 2004 Atmark Techno, Inc. |
| 7 | * |
| 8 | * Michal SIMEK <monstr@monstr.eu> |
| 9 | * Yasushi SHOJI <yashi@atmark-techno.com> |
| 10 | * |
| 11 | * See file CREDITS for list of people who contributed to this |
| 12 | * project. |
| 13 | * |
| 14 | * This program is free software; you can redistribute it and/or |
| 15 | * modify it under the terms of the GNU General Public License as |
| 16 | * published by the Free Software Foundation; either version 2 of |
| 17 | * the License, or (at your option) any later version. |
| 18 | * |
| 19 | * This program is distributed in the hope that it will be useful, |
| 20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 22 | * GNU General Public License for more details. |
| 23 | * |
| 24 | * You should have received a copy of the GNU General Public License |
| 25 | * along with this program; if not, write to the Free Software |
| 26 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 27 | * MA 02111-1307 USA |
| 28 | */ |
| 29 | |
| 30 | #include <common.h> |
| 31 | #include <command.h> |
| 32 | #include <image.h> |
| 33 | #include <u-boot/zlib.h> |
| 34 | #include <asm/byteorder.h> |
| 35 | |
| 36 | DECLARE_GLOBAL_DATA_PTR; |
| 37 | |
| 38 | int do_bootm_linux(int flag, int argc, char * const argv[], |
| 39 | bootm_headers_t *images) |
| 40 | { |
| 41 | void (*kernel) (unsigned int); |
| 42 | ulong rd_data_start, rd_data_end; |
| 43 | |
| 44 | if ((flag != 0) && (flag != BOOTM_STATE_OS_GO)) |
| 45 | return 1; |
| 46 | |
| 47 | int ret; |
| 48 | |
| 49 | char *of_flat_tree = NULL; |
| 50 | #if defined(CONFIG_OF_LIBFDT) |
| 51 | /* did generic code already find a device tree? */ |
| 52 | if (images->ft_len) |
| 53 | of_flat_tree = images->ft_addr; |
| 54 | #endif |
| 55 | |
| 56 | kernel = (void (*)(unsigned int))images->ep; |
| 57 | |
| 58 | /* find ramdisk */ |
| 59 | ret = boot_get_ramdisk(argc, argv, images, IH_ARCH_OPENRISC, |
| 60 | &rd_data_start, &rd_data_end); |
| 61 | if (ret) |
| 62 | return 1; |
| 63 | |
| 64 | show_boot_progress(15); |
| 65 | |
| 66 | if (!of_flat_tree && argc > 3) |
| 67 | of_flat_tree = (char *)simple_strtoul(argv[3], NULL, 16); |
| 68 | #ifdef DEBUG |
| 69 | printf("## Transferring control to Linux (at address 0x%08lx) " \ |
| 70 | "ramdisk 0x%08lx, FDT 0x%08lx...\n", |
| 71 | (ulong) kernel, rd_data_start, (ulong) of_flat_tree); |
| 72 | #endif |
| 73 | if (dcache_status() || icache_status()) |
| 74 | flush_cache((ulong)kernel, max(checkdcache(), checkicache())); |
| 75 | |
| 76 | /* |
| 77 | * Linux Kernel Parameters (passing device tree): |
| 78 | * r3: pointer to the fdt, followed by the board info data |
| 79 | */ |
| 80 | kernel((unsigned int) of_flat_tree); |
| 81 | /* does not return */ |
| 82 | |
| 83 | return 1; |
| 84 | } |