projects / people / ms / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| e0f1fd4c SK |
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 | * | |
| 1a459660 | 11 | * SPDX-License-Identifier: GPL-2.0+ |
| e0f1fd4c SK |
12 | */ |
| 13 | ||
| 14 | #include <common.h> | |
| 15 | #include <command.h> | |
| 16 | #include <image.h> | |
| 17 | #include <u-boot/zlib.h> | |
| 18 | #include <asm/byteorder.h> | |
| 19 | ||
| 20 | DECLARE_GLOBAL_DATA_PTR; | |
| 21 | ||
| 22 | int do_bootm_linux(int flag, int argc, char * const argv[], | |
| 23 | bootm_headers_t *images) | |
| 24 | { | |
| 25 | void (*kernel) (unsigned int); | |
| 26 | ulong rd_data_start, rd_data_end; | |
| 27 | ||
| 2cb0e55a AB |
28 | /* |
| 29 | * allow the PREP bootm subcommand, it is required for bootm to work | |
| 30 | */ | |
| 31 | if (flag & BOOTM_STATE_OS_PREP) | |
| 32 | return 0; | |
| 33 | ||
| e0f1fd4c SK |
34 | if ((flag != 0) && (flag != BOOTM_STATE_OS_GO)) |
| 35 | return 1; | |
| 36 | ||
| 37 | int ret; | |
| 38 | ||
| 39 | char *of_flat_tree = NULL; | |
| 40 | #if defined(CONFIG_OF_LIBFDT) | |
| 41 | /* did generic code already find a device tree? */ | |
| 42 | if (images->ft_len) | |
| 43 | of_flat_tree = images->ft_addr; | |
| 44 | #endif | |
| 45 | ||
| 46 | kernel = (void (*)(unsigned int))images->ep; | |
| 47 | ||
| 48 | /* find ramdisk */ | |
| 49 | ret = boot_get_ramdisk(argc, argv, images, IH_ARCH_OPENRISC, | |
| 50 | &rd_data_start, &rd_data_end); | |
| 51 | if (ret) | |
| 52 | return 1; | |
| 53 | ||
| 54 | show_boot_progress(15); | |
| 55 | ||
| 983c72f4 SG |
56 | if (!of_flat_tree && argc > 1) |
| 57 | of_flat_tree = (char *)simple_strtoul(argv[1], NULL, 16); | |
| e0f1fd4c SK |
58 | #ifdef DEBUG |
| 59 | printf("## Transferring control to Linux (at address 0x%08lx) " \ | |
| 60 | "ramdisk 0x%08lx, FDT 0x%08lx...\n", | |
| 61 | (ulong) kernel, rd_data_start, (ulong) of_flat_tree); | |
| 62 | #endif | |
| 63 | if (dcache_status() || icache_status()) | |
| 64 | flush_cache((ulong)kernel, max(checkdcache(), checkicache())); | |
| 65 | ||
| 66 | /* | |
| 67 | * Linux Kernel Parameters (passing device tree): | |
| 68 | * r3: pointer to the fdt, followed by the board info data | |
| 69 | */ | |
| 70 | kernel((unsigned int) of_flat_tree); | |
| 71 | /* does not return */ | |
| 72 | ||
| 73 | return 1; | |
| 74 | } |