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84 lines
2.0 KiB
84 lines
2.0 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* (C) Copyright 2007 Michal Simek |
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* (C) Copyright 2004 Atmark Techno, Inc. |
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* |
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* Michal SIMEK <[email protected]> |
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* Yasushi SHOJI <[email protected]> |
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*/ |
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#include <common.h> |
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#include <command.h> |
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#include <fdt_support.h> |
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#include <image.h> |
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#include <u-boot/zlib.h> |
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#include <asm/byteorder.h> |
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int do_bootm_linux(int flag, int argc, char * const argv[], |
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bootm_headers_t *images) |
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{ |
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/* First parameter is mapped to $r5 for kernel boot args */ |
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void (*thekernel) (char *, ulong, ulong); |
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char *commandline = env_get("bootargs"); |
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ulong rd_data_start, rd_data_end; |
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/* |
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* allow the PREP bootm subcommand, it is required for bootm to work |
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*/ |
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if (flag & BOOTM_STATE_OS_PREP) |
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return 0; |
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if ((flag != 0) && (flag != BOOTM_STATE_OS_GO)) |
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return 1; |
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int ret; |
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char *of_flat_tree = NULL; |
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#if defined(CONFIG_OF_LIBFDT) |
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/* did generic code already find a device tree? */ |
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if (images->ft_len) |
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of_flat_tree = images->ft_addr; |
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#endif |
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thekernel = (void (*)(char *, ulong, ulong))images->ep; |
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/* find ramdisk */ |
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ret = boot_get_ramdisk(argc, argv, images, IH_ARCH_MICROBLAZE, |
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&rd_data_start, &rd_data_end); |
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if (ret) |
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return 1; |
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bootstage_mark(BOOTSTAGE_ID_RUN_OS); |
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if (!of_flat_tree && argc > 1) |
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of_flat_tree = (char *)simple_strtoul(argv[1], NULL, 16); |
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/* fixup the initrd now that we know where it should be */ |
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if (images->rd_start && images->rd_end && of_flat_tree) { |
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ret = fdt_initrd(of_flat_tree, images->rd_start, |
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images->rd_end); |
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if (ret) |
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return 1; |
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} |
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#ifdef DEBUG |
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printf("## Transferring control to Linux (at address 0x%08lx) ", |
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(ulong)thekernel); |
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printf("ramdisk 0x%08lx, FDT 0x%08lx...\n", |
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rd_data_start, (ulong) of_flat_tree); |
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#endif |
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#ifdef XILINX_USE_DCACHE |
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flush_cache(0, XILINX_DCACHE_BYTE_SIZE); |
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#endif |
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/* |
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* Linux Kernel Parameters (passing device tree): |
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* r5: pointer to command line |
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* r6: pointer to ramdisk |
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* r7: pointer to the fdt, followed by the board info data |
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*/ |
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thekernel(commandline, rd_data_start, (ulong)of_flat_tree); |
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/* does not return */ |
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return 1; |
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}
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