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 * 81a459660SWolfgang Denk * SPDX-License-Identifier: GPL-2.0+ 9ea0364f1SPeter Tyser */ 10ea0364f1SPeter Tyser 11ea0364f1SPeter Tyser #include <common.h> 12ea0364f1SPeter Tyser #include <command.h> 1373223f0eSSimon Glass #include <fdt_support.h> 14ea0364f1SPeter Tyser #include <image.h> 15ea0364f1SPeter Tyser #include <u-boot/zlib.h> 16ea0364f1SPeter Tyser #include <asm/byteorder.h> 17ea0364f1SPeter Tyser 18ea0364f1SPeter Tyser DECLARE_GLOBAL_DATA_PTR; 19ea0364f1SPeter Tyser 2063c09417SMasahiro Yamada int arch_fixup_fdt(void *blob) 2163c09417SMasahiro Yamada { 2263c09417SMasahiro Yamada return 0; 2363c09417SMasahiro Yamada } 2463c09417SMasahiro Yamada 251e71fa43SMichal Simek int do_bootm_linux(int flag, int argc, char * const argv[], 261e71fa43SMichal Simek bootm_headers_t *images) 27ea0364f1SPeter Tyser { 28ea0364f1SPeter Tyser /* First parameter is mapped to $r5 for kernel boot args */ 291e71fa43SMichal Simek void (*thekernel) (char *, ulong, ulong); 30*00caae6dSSimon Glass char *commandline = env_get("bootargs"); 31398b1d57SArun Bhanu ulong rd_data_start, rd_data_end; 32ea0364f1SPeter Tyser 332cb0e55aSAndreas Bießmann /* 342cb0e55aSAndreas Bießmann * allow the PREP bootm subcommand, it is required for bootm to work 352cb0e55aSAndreas Bießmann */ 362cb0e55aSAndreas Bießmann if (flag & BOOTM_STATE_OS_PREP) 372cb0e55aSAndreas Bießmann return 0; 382cb0e55aSAndreas Bießmann 39ea0364f1SPeter Tyser if ((flag != 0) && (flag != BOOTM_STATE_OS_GO)) 40ea0364f1SPeter Tyser return 1; 41ea0364f1SPeter Tyser 42398b1d57SArun Bhanu int ret; 43398b1d57SArun Bhanu 44398b1d57SArun Bhanu char *of_flat_tree = NULL; 45398b1d57SArun Bhanu #if defined(CONFIG_OF_LIBFDT) 465a75e121SJohn Rigby /* did generic code already find a device tree? */ 475a75e121SJohn Rigby if (images->ft_len) 485a75e121SJohn Rigby of_flat_tree = images->ft_addr; 49398b1d57SArun Bhanu #endif 50398b1d57SArun Bhanu 511e71fa43SMichal Simek thekernel = (void (*)(char *, ulong, ulong))images->ep; 52398b1d57SArun Bhanu 53398b1d57SArun Bhanu /* find ramdisk */ 54398b1d57SArun Bhanu ret = boot_get_ramdisk(argc, argv, images, IH_ARCH_MICROBLAZE, 55398b1d57SArun Bhanu &rd_data_start, &rd_data_end); 56398b1d57SArun Bhanu if (ret) 57398b1d57SArun Bhanu return 1; 58ea0364f1SPeter Tyser 59770605e4SSimon Glass bootstage_mark(BOOTSTAGE_ID_RUN_OS); 60ea0364f1SPeter Tyser 61983c72f4SSimon Glass if (!of_flat_tree && argc > 1) 62983c72f4SSimon Glass of_flat_tree = (char *)simple_strtoul(argv[1], NULL, 16); 63a8425d52SMichal Simek 64a8425d52SMichal Simek /* fixup the initrd now that we know where it should be */ 65a8425d52SMichal Simek if (images->rd_start && images->rd_end && of_flat_tree) 66a8425d52SMichal Simek ret = fdt_initrd(of_flat_tree, images->rd_start, 67dbe963aeSMasahiro Yamada images->rd_end); 68a8425d52SMichal Simek if (ret) 69a8425d52SMichal Simek return 1; 70a8425d52SMichal Simek 71ea0364f1SPeter Tyser #ifdef DEBUG 721e71fa43SMichal Simek printf("## Transferring control to Linux (at address 0x%08lx) ", 731e71fa43SMichal Simek (ulong)thekernel); 741e71fa43SMichal Simek printf("ramdisk 0x%08lx, FDT 0x%08lx...\n", 751e71fa43SMichal Simek rd_data_start, (ulong) of_flat_tree); 76ea0364f1SPeter Tyser #endif 77ea0364f1SPeter Tyser 789b4d9056SMichal Simek #ifdef XILINX_USE_DCACHE 799b4d9056SMichal Simek flush_cache(0, XILINX_DCACHE_BYTE_SIZE); 809b4d9056SMichal Simek #endif 81398b1d57SArun Bhanu /* 82398b1d57SArun Bhanu * Linux Kernel Parameters (passing device tree): 83398b1d57SArun Bhanu * r5: pointer to command line 84398b1d57SArun Bhanu * r6: pointer to ramdisk 85398b1d57SArun Bhanu * r7: pointer to the fdt, followed by the board info data 86398b1d57SArun Bhanu */ 871e71fa43SMichal Simek thekernel(commandline, rd_data_start, (ulong)of_flat_tree); 88ea0364f1SPeter Tyser /* does not return */ 89ea0364f1SPeter Tyser 90ea0364f1SPeter Tyser return 1; 91ea0364f1SPeter Tyser } 92