diff options
Diffstat (limited to 'u-boot/arch/microblaze/lib/bootm.c')
| -rw-r--r-- | u-boot/arch/microblaze/lib/bootm.c | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/u-boot/arch/microblaze/lib/bootm.c b/u-boot/arch/microblaze/lib/bootm.c new file mode 100644 index 0000000..9f6d6d6 --- /dev/null +++ b/u-boot/arch/microblaze/lib/bootm.c @@ -0,0 +1,90 @@ +/* + * (C) Copyright 2007 Michal Simek + * (C) Copyright 2004 Atmark Techno, Inc. + * + * Michal SIMEK <monstr@monstr.eu> + * Yasushi SHOJI <yashi@atmark-techno.com> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <command.h> +#include <image.h> +#include <u-boot/zlib.h> +#include <asm/byteorder.h> + +DECLARE_GLOBAL_DATA_PTR; + +int do_bootm_linux(int flag, int argc, char * const argv[], bootm_headers_t *images) +{ + /* First parameter is mapped to $r5 for kernel boot args */ + void (*theKernel) (char *, ulong, ulong); + char *commandline = getenv ("bootargs"); + ulong rd_data_start, rd_data_end; + + if ((flag != 0) && (flag != BOOTM_STATE_OS_GO)) + return 1; + + int ret; + + char *of_flat_tree = NULL; +#if defined(CONFIG_OF_LIBFDT) + /* did generic code already find a device tree? */ + if (images->ft_len) + of_flat_tree = images->ft_addr; +#endif + + theKernel = (void (*)(char *, ulong, ulong))images->ep; + + /* find ramdisk */ + ret = boot_get_ramdisk (argc, argv, images, IH_ARCH_MICROBLAZE, + &rd_data_start, &rd_data_end); + if (ret) + return 1; + + show_boot_progress (15); + + if (!of_flat_tree && argc > 3) + of_flat_tree = (char *)simple_strtoul(argv[3], NULL, 16); +#ifdef DEBUG + printf ("## Transferring control to Linux (at address 0x%08lx) " \ + "ramdisk 0x%08lx, FDT 0x%08lx...\n", + (ulong) theKernel, rd_data_start, (ulong) of_flat_tree); +#endif + +#ifdef XILINX_USE_DCACHE +#ifdef XILINX_DCACHE_BYTE_SIZE + flush_cache(0, XILINX_DCACHE_BYTE_SIZE); +#else +#warning please rebuild BSPs and update configuration + flush_cache(0, 32768); +#endif +#endif + /* + * Linux Kernel Parameters (passing device tree): + * r5: pointer to command line + * r6: pointer to ramdisk + * r7: pointer to the fdt, followed by the board info data + */ + theKernel (commandline, rd_data_start, (ulong) of_flat_tree); + /* does not return */ + + return 1; +} |