1ea0364f1SPeter Tyser /* 2ea0364f1SPeter Tyser * (C) Copyright 2007 Michal Simek 3ea0364f1SPeter Tyser * (C) Copyright 2004 Atmark Techno, Inc. 4ea0364f1SPeter Tyser * 5ea0364f1SPeter Tyser * Michal SIMEK <monstr@monstr.eu> 6ea0364f1SPeter Tyser * Yasushi SHOJI <yashi@atmark-techno.com> 7ea0364f1SPeter Tyser * 8ea0364f1SPeter Tyser * See file CREDITS for list of people who contributed to this 9ea0364f1SPeter Tyser * project. 10ea0364f1SPeter Tyser * 11ea0364f1SPeter Tyser * This program is free software; you can redistribute it and/or 12ea0364f1SPeter Tyser * modify it under the terms of the GNU General Public License as 13ea0364f1SPeter Tyser * published by the Free Software Foundation; either version 2 of 14ea0364f1SPeter Tyser * the License, or (at your option) any later version. 15ea0364f1SPeter Tyser * 16ea0364f1SPeter Tyser * This program is distributed in the hope that it will be useful, 17ea0364f1SPeter Tyser * but WITHOUT ANY WARRANTY; without even the implied warranty of 18ea0364f1SPeter Tyser * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19ea0364f1SPeter Tyser * GNU General Public License for more details. 20ea0364f1SPeter Tyser * 21ea0364f1SPeter Tyser * You should have received a copy of the GNU General Public License 22ea0364f1SPeter Tyser * along with this program; if not, write to the Free Software 23ea0364f1SPeter Tyser * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 24ea0364f1SPeter Tyser * MA 02111-1307 USA 25ea0364f1SPeter Tyser */ 26ea0364f1SPeter Tyser 27ea0364f1SPeter Tyser #include <common.h> 28ea0364f1SPeter Tyser #include <command.h> 29ea0364f1SPeter Tyser #include <image.h> 30ea0364f1SPeter Tyser #include <u-boot/zlib.h> 31ea0364f1SPeter Tyser #include <asm/byteorder.h> 32ea0364f1SPeter Tyser 33ea0364f1SPeter Tyser DECLARE_GLOBAL_DATA_PTR; 34ea0364f1SPeter Tyser 35ea0364f1SPeter Tyser int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images) 36ea0364f1SPeter Tyser { 37ea0364f1SPeter Tyser /* First parameter is mapped to $r5 for kernel boot args */ 38398b1d57SArun Bhanu void (*theKernel) (char *, ulong, ulong); 39ea0364f1SPeter Tyser char *commandline = getenv ("bootargs"); 40398b1d57SArun Bhanu ulong rd_data_start, rd_data_end; 41ea0364f1SPeter Tyser 42ea0364f1SPeter Tyser if ((flag != 0) && (flag != BOOTM_STATE_OS_GO)) 43ea0364f1SPeter Tyser return 1; 44ea0364f1SPeter Tyser 45398b1d57SArun Bhanu int ret; 46398b1d57SArun Bhanu 47398b1d57SArun Bhanu char *of_flat_tree = NULL; 48398b1d57SArun Bhanu #if defined(CONFIG_OF_LIBFDT) 49398b1d57SArun Bhanu ulong of_size = 0; 50398b1d57SArun Bhanu 51398b1d57SArun Bhanu /* find flattened device tree */ 52398b1d57SArun Bhanu ret = boot_get_fdt (flag, argc, argv, images, &of_flat_tree, &of_size); 53398b1d57SArun Bhanu if (ret) 54398b1d57SArun Bhanu return 1; 55398b1d57SArun Bhanu #endif 56398b1d57SArun Bhanu 57398b1d57SArun Bhanu theKernel = (void (*)(char *, ulong, ulong))images->ep; 58398b1d57SArun Bhanu 59398b1d57SArun Bhanu /* find ramdisk */ 60398b1d57SArun Bhanu ret = boot_get_ramdisk (argc, argv, images, IH_ARCH_MICROBLAZE, 61398b1d57SArun Bhanu &rd_data_start, &rd_data_end); 62398b1d57SArun Bhanu if (ret) 63398b1d57SArun Bhanu return 1; 64ea0364f1SPeter Tyser 65ea0364f1SPeter Tyser show_boot_progress (15); 66ea0364f1SPeter Tyser 67398b1d57SArun Bhanu if (!(ulong) of_flat_tree) 68398b1d57SArun Bhanu of_flat_tree = (char *)simple_strtoul (argv[3], NULL, 16); 69398b1d57SArun Bhanu 70ea0364f1SPeter Tyser #ifdef DEBUG 71398b1d57SArun Bhanu printf ("## Transferring control to Linux (at address 0x%08lx) " \ 72398b1d57SArun Bhanu "ramdisk 0x%08lx, FDT 0x%08lx...\n", 73398b1d57SArun Bhanu (ulong) theKernel, rd_data_start, (ulong) of_flat_tree); 74ea0364f1SPeter Tyser #endif 75ea0364f1SPeter Tyser 76*9b4d9056SMichal Simek #ifdef XILINX_USE_DCACHE 77*9b4d9056SMichal Simek #ifdef XILINX_DCACHE_BYTE_SIZE 78*9b4d9056SMichal Simek flush_cache(0, XILINX_DCACHE_BYTE_SIZE); 79*9b4d9056SMichal Simek #else 80*9b4d9056SMichal Simek #warning please rebuild BSPs and update configuration 81*9b4d9056SMichal Simek flush_cache(0, 32768); 82*9b4d9056SMichal Simek #endif 83*9b4d9056SMichal Simek #endif 84398b1d57SArun Bhanu /* 85398b1d57SArun Bhanu * Linux Kernel Parameters (passing device tree): 86398b1d57SArun Bhanu * r5: pointer to command line 87398b1d57SArun Bhanu * r6: pointer to ramdisk 88398b1d57SArun Bhanu * r7: pointer to the fdt, followed by the board info data 89398b1d57SArun Bhanu */ 90398b1d57SArun Bhanu theKernel (commandline, rd_data_start, (ulong) of_flat_tree); 91ea0364f1SPeter Tyser /* does not return */ 92ea0364f1SPeter Tyser 93ea0364f1SPeter Tyser return 1; 94ea0364f1SPeter Tyser } 95