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https://github.com/brain-hackers/u-boot-brain
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![Marian Balakowicz](/assets/img/avatar_default.png)
This patch adds framework for dual format images. Format detection is added and the bootm controll flow is updated to include cases for new FIT format uImages. When the legacy (image_header based) format is detected appropriate legacy specific handling is invoked. For the new (FIT based) format uImages dual boot framework has a minial support, that will only print out a corresponding debug messages. Implementation of the FIT specific handling will be added in following patches. Signed-off-by: Marian Balakowicz <m8@semihalf.com>
297 lines
7.5 KiB
C
297 lines
7.5 KiB
C
/*
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* (C) Copyright 2002
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* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
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* Marius Groeger <mgroeger@sysgo.de>
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*
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* Copyright (C) 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <common.h>
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#include <command.h>
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#include <image.h>
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#include <zlib.h>
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#include <asm/byteorder.h>
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DECLARE_GLOBAL_DATA_PTR;
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#if defined (CONFIG_SETUP_MEMORY_TAGS) || \
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defined (CONFIG_CMDLINE_TAG) || \
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defined (CONFIG_INITRD_TAG) || \
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defined (CONFIG_SERIAL_TAG) || \
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defined (CONFIG_REVISION_TAG) || \
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defined (CONFIG_VFD) || \
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defined (CONFIG_LCD)
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static void setup_start_tag (bd_t *bd);
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# ifdef CONFIG_SETUP_MEMORY_TAGS
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static void setup_memory_tags (bd_t *bd);
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# endif
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static void setup_commandline_tag (bd_t *bd, char *commandline);
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#if 0
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static void setup_ramdisk_tag (bd_t *bd);
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#endif
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# ifdef CONFIG_INITRD_TAG
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static void setup_initrd_tag (bd_t *bd, ulong initrd_start,
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ulong initrd_end);
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# endif
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static void setup_end_tag (bd_t *bd);
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# if defined (CONFIG_VFD) || defined (CONFIG_LCD)
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static void setup_videolfb_tag (gd_t *gd);
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# endif
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static struct tag *params;
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#endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */
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extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
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void do_bootm_linux (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
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bootm_headers_t *images, int verify)
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{
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ulong initrd_start, initrd_end;
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ulong ep = 0;
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bd_t *bd = gd->bd;
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char *s;
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int machid = bd->bi_arch_number;
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void (*theKernel)(int zero, int arch, uint params);
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#ifdef CONFIG_CMDLINE_TAG
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char *commandline = getenv ("bootargs");
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#endif
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/* find kernel entry point */
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if (images->legacy_hdr_valid) {
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ep = image_get_ep (images->legacy_hdr_os);
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#if defined(CONFIG_FIT)
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} else if (images->fit_uname_os) {
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fit_unsupported_reset ("ARM linux bootm");
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do_reset (cmdtp, flag, argc, argv);
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#endif
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} else {
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puts ("Could not find kernel entry point!\n");
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do_reset (cmdtp, flag, argc, argv);
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}
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theKernel = (void (*)(int, int, uint))ep;
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s = getenv ("machid");
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if (s) {
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machid = simple_strtoul (s, NULL, 16);
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printf ("Using machid 0x%x from environment\n", machid);
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}
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get_ramdisk (cmdtp, flag, argc, argv, images, verify,
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IH_ARCH_ARM, &initrd_start, &initrd_end);
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show_boot_progress (15);
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debug ("## Transferring control to Linux (at address %08lx) ...\n",
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(ulong) theKernel);
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#if defined (CONFIG_SETUP_MEMORY_TAGS) || \
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defined (CONFIG_CMDLINE_TAG) || \
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defined (CONFIG_INITRD_TAG) || \
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defined (CONFIG_SERIAL_TAG) || \
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defined (CONFIG_REVISION_TAG) || \
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defined (CONFIG_LCD) || \
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defined (CONFIG_VFD)
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setup_start_tag (bd);
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#ifdef CONFIG_SERIAL_TAG
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setup_serial_tag (¶ms);
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#endif
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#ifdef CONFIG_REVISION_TAG
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setup_revision_tag (¶ms);
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#endif
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#ifdef CONFIG_SETUP_MEMORY_TAGS
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setup_memory_tags (bd);
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#endif
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#ifdef CONFIG_CMDLINE_TAG
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setup_commandline_tag (bd, commandline);
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#endif
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#ifdef CONFIG_INITRD_TAG
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if (initrd_start && initrd_end)
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setup_initrd_tag (bd, initrd_start, initrd_end);
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#endif
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#if defined (CONFIG_VFD) || defined (CONFIG_LCD)
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setup_videolfb_tag ((gd_t *) gd);
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#endif
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setup_end_tag (bd);
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#endif
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/* we assume that the kernel is in place */
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printf ("\nStarting kernel ...\n\n");
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#ifdef CONFIG_USB_DEVICE
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{
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extern void udc_disconnect (void);
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udc_disconnect ();
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}
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#endif
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cleanup_before_linux ();
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theKernel (0, machid, bd->bi_boot_params);
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}
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#if defined (CONFIG_SETUP_MEMORY_TAGS) || \
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defined (CONFIG_CMDLINE_TAG) || \
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defined (CONFIG_INITRD_TAG) || \
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defined (CONFIG_SERIAL_TAG) || \
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defined (CONFIG_REVISION_TAG) || \
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defined (CONFIG_LCD) || \
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defined (CONFIG_VFD)
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static void setup_start_tag (bd_t *bd)
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{
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params = (struct tag *) bd->bi_boot_params;
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params->hdr.tag = ATAG_CORE;
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params->hdr.size = tag_size (tag_core);
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params->u.core.flags = 0;
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params->u.core.pagesize = 0;
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params->u.core.rootdev = 0;
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params = tag_next (params);
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}
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#ifdef CONFIG_SETUP_MEMORY_TAGS
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static void setup_memory_tags (bd_t *bd)
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{
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int i;
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for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
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params->hdr.tag = ATAG_MEM;
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params->hdr.size = tag_size (tag_mem32);
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params->u.mem.start = bd->bi_dram[i].start;
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params->u.mem.size = bd->bi_dram[i].size;
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params = tag_next (params);
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}
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}
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#endif /* CONFIG_SETUP_MEMORY_TAGS */
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static void setup_commandline_tag (bd_t *bd, char *commandline)
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{
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char *p;
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if (!commandline)
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return;
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/* eat leading white space */
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for (p = commandline; *p == ' '; p++);
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/* skip non-existent command lines so the kernel will still
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* use its default command line.
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*/
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if (*p == '\0')
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return;
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params->hdr.tag = ATAG_CMDLINE;
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params->hdr.size =
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(sizeof (struct tag_header) + strlen (p) + 1 + 4) >> 2;
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strcpy (params->u.cmdline.cmdline, p);
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params = tag_next (params);
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}
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#ifdef CONFIG_INITRD_TAG
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static void setup_initrd_tag (bd_t *bd, ulong initrd_start, ulong initrd_end)
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{
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/* an ATAG_INITRD node tells the kernel where the compressed
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* ramdisk can be found. ATAG_RDIMG is a better name, actually.
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*/
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params->hdr.tag = ATAG_INITRD2;
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params->hdr.size = tag_size (tag_initrd);
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params->u.initrd.start = initrd_start;
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params->u.initrd.size = initrd_end - initrd_start;
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params = tag_next (params);
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}
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#endif /* CONFIG_INITRD_TAG */
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#if defined (CONFIG_VFD) || defined (CONFIG_LCD)
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extern ulong calc_fbsize (void);
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static void setup_videolfb_tag (gd_t *gd)
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{
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/* An ATAG_VIDEOLFB node tells the kernel where and how large
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* the framebuffer for video was allocated (among other things).
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* Note that a _physical_ address is passed !
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*
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* We only use it to pass the address and size, the other entries
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* in the tag_videolfb are not of interest.
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*/
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params->hdr.tag = ATAG_VIDEOLFB;
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params->hdr.size = tag_size (tag_videolfb);
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params->u.videolfb.lfb_base = (u32) gd->fb_base;
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/* Fb size is calculated according to parameters for our panel
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*/
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params->u.videolfb.lfb_size = calc_fbsize();
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params = tag_next (params);
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}
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#endif /* CONFIG_VFD || CONFIG_LCD */
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#ifdef CONFIG_SERIAL_TAG
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void setup_serial_tag (struct tag **tmp)
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{
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struct tag *params = *tmp;
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struct tag_serialnr serialnr;
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void get_board_serial(struct tag_serialnr *serialnr);
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get_board_serial(&serialnr);
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params->hdr.tag = ATAG_SERIAL;
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params->hdr.size = tag_size (tag_serialnr);
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params->u.serialnr.low = serialnr.low;
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params->u.serialnr.high= serialnr.high;
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params = tag_next (params);
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*tmp = params;
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}
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#endif
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#ifdef CONFIG_REVISION_TAG
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void setup_revision_tag(struct tag **in_params)
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{
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u32 rev = 0;
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u32 get_board_rev(void);
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rev = get_board_rev();
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params->hdr.tag = ATAG_REVISION;
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params->hdr.size = tag_size (tag_revision);
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params->u.revision.rev = rev;
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params = tag_next (params);
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}
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#endif /* CONFIG_REVISION_TAG */
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static void setup_end_tag (bd_t *bd)
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{
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params->hdr.tag = ATAG_NONE;
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params->hdr.size = 0;
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}
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#endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */
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