/* * (C) Copyright 2002 * Sysgo Real-Time Solutions, GmbH <www.elinos.com> * Marius Groeger <mgroeger@sysgo.de> * * Copyright (C) 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl) * * 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 <zlib.h> #include <asm/byteorder.h> DECLARE_GLOBAL_DATA_PTR; #if defined (CONFIG_SETUP_MEMORY_TAGS) || \ defined (CONFIG_CMDLINE_TAG) || \ defined (CONFIG_INITRD_TAG) || \ defined (CONFIG_SERIAL_TAG) || \ defined (CONFIG_REVISION_TAG) || \ defined (CONFIG_VFD) || \ defined (CONFIG_LCD) static void setup_start_tag (bd_t *bd); # ifdef CONFIG_SETUP_MEMORY_TAGS static void setup_memory_tags (bd_t *bd); # endif static void setup_commandline_tag (bd_t *bd, char *commandline); # ifdef CONFIG_INITRD_TAG static void setup_initrd_tag (bd_t *bd, ulong initrd_start, ulong initrd_end); # endif static void setup_end_tag (bd_t *bd); # if defined (CONFIG_VFD) || defined (CONFIG_LCD) static void setup_videolfb_tag (gd_t *gd); # endif static struct tag *params; #endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */ int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images) { bd_t *bd = gd->bd; char *s; int machid = bd->bi_arch_number; void (*theKernel)(int zero, int arch, uint params); #ifdef CONFIG_CMDLINE_TAG char *commandline = getenv ("bootargs"); #endif if ((flag != 0) && (flag != BOOTM_STATE_OS_GO)) return 1; theKernel = (void (*)(int, int, uint))images->ep; s = getenv ("machid"); if (s) { machid = simple_strtoul (s, NULL, 16); printf ("Using machid 0x%x from environment\n", machid); } show_boot_progress (15); debug ("## Transferring control to Linux (at address %08lx) ...\n", (ulong) theKernel); #if defined (CONFIG_SETUP_MEMORY_TAGS) || \ defined (CONFIG_CMDLINE_TAG) || \ defined (CONFIG_INITRD_TAG) || \ defined (CONFIG_SERIAL_TAG) || \ defined (CONFIG_REVISION_TAG) || \ defined (CONFIG_LCD) || \ defined (CONFIG_VFD) setup_start_tag (bd); #ifdef CONFIG_SERIAL_TAG setup_serial_tag (¶ms); #endif #ifdef CONFIG_REVISION_TAG setup_revision_tag (¶ms); #endif #ifdef CONFIG_SETUP_MEMORY_TAGS setup_memory_tags (bd); #endif #ifdef CONFIG_CMDLINE_TAG setup_commandline_tag (bd, commandline); #endif #ifdef CONFIG_INITRD_TAG if (images->rd_start && images->rd_end) setup_initrd_tag (bd, images->rd_start, images->rd_end); #endif #if defined (CONFIG_VFD) || defined (CONFIG_LCD) setup_videolfb_tag ((gd_t *) gd); #endif setup_end_tag (bd); #endif /* we assume that the kernel is in place */ printf ("\nStarting kernel ...\n\n"); #ifdef CONFIG_USB_DEVICE { extern void udc_disconnect (void); udc_disconnect (); } #endif cleanup_before_linux (); theKernel (0, machid, bd->bi_boot_params); /* does not return */ return 1; } #if defined (CONFIG_SETUP_MEMORY_TAGS) || \ defined (CONFIG_CMDLINE_TAG) || \ defined (CONFIG_INITRD_TAG) || \ defined (CONFIG_SERIAL_TAG) || \ defined (CONFIG_REVISION_TAG) || \ defined (CONFIG_LCD) || \ defined (CONFIG_VFD) static void setup_start_tag (bd_t *bd) { params = (struct tag *) bd->bi_boot_params; params->hdr.tag = ATAG_CORE; params->hdr.size = tag_size (tag_core); params->u.core.flags = 0; params->u.core.pagesize = 0; params->u.core.rootdev = 0; params = tag_next (params); } #ifdef CONFIG_SETUP_MEMORY_TAGS static void setup_memory_tags (bd_t *bd) { int i; for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) { params->hdr.tag = ATAG_MEM; params->hdr.size = tag_size (tag_mem32); params->u.mem.start = bd->bi_dram[i].start; params->u.mem.size = bd->bi_dram[i].size; params = tag_next (params); } } #endif /* CONFIG_SETUP_MEMORY_TAGS */ static void setup_commandline_tag (bd_t *bd, char *commandline) { char *p; if (!commandline) return; /* eat leading white space */ for (p = commandline; *p == ' '; p++); /* skip non-existent command lines so the kernel will still * use its default command line. */ if (*p == '\0') return; params->hdr.tag = ATAG_CMDLINE; params->hdr.size = (sizeof (struct tag_header) + strlen (p) + 1 + 4) >> 2; strcpy (params->u.cmdline.cmdline, p); params = tag_next (params); } #ifdef CONFIG_INITRD_TAG static void setup_initrd_tag (bd_t *bd, ulong initrd_start, ulong initrd_end) { /* an ATAG_INITRD node tells the kernel where the compressed * ramdisk can be found. ATAG_RDIMG is a better name, actually. */ params->hdr.tag = ATAG_INITRD2; params->hdr.size = tag_size (tag_initrd); params->u.initrd.start = initrd_start; params->u.initrd.size = initrd_end - initrd_start; params = tag_next (params); } #endif /* CONFIG_INITRD_TAG */ #if defined (CONFIG_VFD) || defined (CONFIG_LCD) extern ulong calc_fbsize (void); static void setup_videolfb_tag (gd_t *gd) { /* An ATAG_VIDEOLFB node tells the kernel where and how large * the framebuffer for video was allocated (among other things). * Note that a _physical_ address is passed ! * * We only use it to pass the address and size, the other entries * in the tag_videolfb are not of interest. */ params->hdr.tag = ATAG_VIDEOLFB; params->hdr.size = tag_size (tag_videolfb); params->u.videolfb.lfb_base = (u32) gd->fb_base; /* Fb size is calculated according to parameters for our panel */ params->u.videolfb.lfb_size = calc_fbsize(); params = tag_next (params); } #endif /* CONFIG_VFD || CONFIG_LCD */ #ifdef CONFIG_SERIAL_TAG void setup_serial_tag (struct tag **tmp) { struct tag *params = *tmp; struct tag_serialnr serialnr; void get_board_serial(struct tag_serialnr *serialnr); get_board_serial(&serialnr); params->hdr.tag = ATAG_SERIAL; params->hdr.size = tag_size (tag_serialnr); params->u.serialnr.low = serialnr.low; params->u.serialnr.high= serialnr.high; params = tag_next (params); *tmp = params; } #endif #ifdef CONFIG_REVISION_TAG void setup_revision_tag(struct tag **in_params) { u32 rev = 0; u32 get_board_rev(void); rev = get_board_rev(); params->hdr.tag = ATAG_REVISION; params->hdr.size = tag_size (tag_revision); params->u.revision.rev = rev; params = tag_next (params); } #endif /* CONFIG_REVISION_TAG */ static void setup_end_tag (bd_t *bd) { params->hdr.tag = ATAG_NONE; params->hdr.size = 0; } #endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */