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 * 8*1a459660SWolfgang Denk * SPDX-License-Identifier: GPL-2.0+ 9ea0364f1SPeter Tyser */ 10ea0364f1SPeter Tyser 11ea0364f1SPeter Tyser #include <common.h> 12ea0364f1SPeter Tyser #include <command.h> 13ea0364f1SPeter Tyser #include <image.h> 14ea0364f1SPeter Tyser #include <u-boot/zlib.h> 15ea0364f1SPeter Tyser #include <asm/byteorder.h> 16ea0364f1SPeter Tyser 17ea0364f1SPeter Tyser DECLARE_GLOBAL_DATA_PTR; 18ea0364f1SPeter Tyser 191e71fa43SMichal Simek int do_bootm_linux(int flag, int argc, char * const argv[], 201e71fa43SMichal Simek bootm_headers_t *images) 21ea0364f1SPeter Tyser { 22ea0364f1SPeter Tyser /* First parameter is mapped to $r5 for kernel boot args */ 231e71fa43SMichal Simek void (*thekernel) (char *, ulong, ulong); 24ea0364f1SPeter Tyser char *commandline = getenv("bootargs"); 25398b1d57SArun Bhanu ulong rd_data_start, rd_data_end; 26ea0364f1SPeter Tyser 272cb0e55aSAndreas Bießmann /* 282cb0e55aSAndreas Bießmann * allow the PREP bootm subcommand, it is required for bootm to work 292cb0e55aSAndreas Bießmann */ 302cb0e55aSAndreas Bießmann if (flag & BOOTM_STATE_OS_PREP) 312cb0e55aSAndreas Bießmann return 0; 322cb0e55aSAndreas Bießmann 33ea0364f1SPeter Tyser if ((flag != 0) && (flag != BOOTM_STATE_OS_GO)) 34ea0364f1SPeter Tyser return 1; 35ea0364f1SPeter Tyser 36398b1d57SArun Bhanu int ret; 37398b1d57SArun Bhanu 38398b1d57SArun Bhanu char *of_flat_tree = NULL; 39398b1d57SArun Bhanu #if defined(CONFIG_OF_LIBFDT) 405a75e121SJohn Rigby /* did generic code already find a device tree? */ 415a75e121SJohn Rigby if (images->ft_len) 425a75e121SJohn Rigby of_flat_tree = images->ft_addr; 43398b1d57SArun Bhanu #endif 44398b1d57SArun Bhanu 451e71fa43SMichal Simek thekernel = (void (*)(char *, ulong, ulong))images->ep; 46398b1d57SArun Bhanu 47398b1d57SArun Bhanu /* find ramdisk */ 48398b1d57SArun Bhanu ret = boot_get_ramdisk(argc, argv, images, IH_ARCH_MICROBLAZE, 49398b1d57SArun Bhanu &rd_data_start, &rd_data_end); 50398b1d57SArun Bhanu if (ret) 51398b1d57SArun Bhanu return 1; 52ea0364f1SPeter Tyser 53770605e4SSimon Glass bootstage_mark(BOOTSTAGE_ID_RUN_OS); 54ea0364f1SPeter Tyser 55983c72f4SSimon Glass if (!of_flat_tree && argc > 1) 56983c72f4SSimon Glass of_flat_tree = (char *)simple_strtoul(argv[1], NULL, 16); 57a8425d52SMichal Simek 58a8425d52SMichal Simek /* fixup the initrd now that we know where it should be */ 59a8425d52SMichal Simek if (images->rd_start && images->rd_end && of_flat_tree) 60a8425d52SMichal Simek ret = fdt_initrd(of_flat_tree, images->rd_start, 61a8425d52SMichal Simek images->rd_end, 1); 62a8425d52SMichal Simek if (ret) 63a8425d52SMichal Simek return 1; 64a8425d52SMichal Simek 65ea0364f1SPeter Tyser #ifdef DEBUG 661e71fa43SMichal Simek printf("## Transferring control to Linux (at address 0x%08lx) ", 671e71fa43SMichal Simek (ulong)thekernel); 681e71fa43SMichal Simek printf("ramdisk 0x%08lx, FDT 0x%08lx...\n", 691e71fa43SMichal Simek rd_data_start, (ulong) of_flat_tree); 70ea0364f1SPeter Tyser #endif 71ea0364f1SPeter Tyser 729b4d9056SMichal Simek #ifdef XILINX_USE_DCACHE 739b4d9056SMichal Simek flush_cache(0, XILINX_DCACHE_BYTE_SIZE); 749b4d9056SMichal Simek #endif 75398b1d57SArun Bhanu /* 76398b1d57SArun Bhanu * Linux Kernel Parameters (passing device tree): 77398b1d57SArun Bhanu * r5: pointer to command line 78398b1d57SArun Bhanu * r6: pointer to ramdisk 79398b1d57SArun Bhanu * r7: pointer to the fdt, followed by the board info data 80398b1d57SArun Bhanu */ 811e71fa43SMichal Simek thekernel(commandline, rd_data_start, (ulong)of_flat_tree); 82ea0364f1SPeter Tyser /* does not return */ 83ea0364f1SPeter Tyser 84ea0364f1SPeter Tyser return 1; 85ea0364f1SPeter Tyser } 86