From e0f1fd4c82129eab2c607763f3bdb376eda7dd84 Mon Sep 17 00:00:00 2001 From: Stefan Kristiansson Date: Sat, 26 Nov 2011 19:04:52 +0000 Subject: openrisc: Add library functions Signed-off-by: Stefan Kristiansson --- arch/openrisc/lib/bootm.c | 84 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 84 insertions(+) create mode 100644 arch/openrisc/lib/bootm.c (limited to 'arch/openrisc/lib/bootm.c') diff --git a/arch/openrisc/lib/bootm.c b/arch/openrisc/lib/bootm.c new file mode 100644 index 0000000..2c5d9ae --- /dev/null +++ b/arch/openrisc/lib/bootm.c @@ -0,0 +1,84 @@ +/* + * (C) Copyright 2011 Stefan Kristiansson + * + * Based on microblaze implementation by: + * (C) Copyright 2007 Michal Simek + * (C) Copyright 2004 Atmark Techno, Inc. + * + * Michal SIMEK + * Yasushi SHOJI + * + * 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 +#include +#include +#include +#include + +DECLARE_GLOBAL_DATA_PTR; + +int do_bootm_linux(int flag, int argc, char * const argv[], + bootm_headers_t *images) +{ + void (*kernel) (unsigned int); + 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 + + kernel = (void (*)(unsigned int))images->ep; + + /* find ramdisk */ + ret = boot_get_ramdisk(argc, argv, images, IH_ARCH_OPENRISC, + &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) kernel, rd_data_start, (ulong) of_flat_tree); +#endif + if (dcache_status() || icache_status()) + flush_cache((ulong)kernel, max(checkdcache(), checkicache())); + + /* + * Linux Kernel Parameters (passing device tree): + * r3: pointer to the fdt, followed by the board info data + */ + kernel((unsigned int) of_flat_tree); + /* does not return */ + + return 1; +} -- cgit v1.1