upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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418 lines
10 KiB
418 lines
10 KiB
/*
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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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#ifdef CONFIG_HAS_DATAFLASH
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#include <dataflash.h>
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#endif
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/*cmd_boot.c*/
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extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
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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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#ifdef CONFIG_SHOW_BOOT_PROGRESS
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# include <status_led.h>
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# define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg)
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#else
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# define SHOW_BOOT_PROGRESS(arg)
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#endif
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extern image_header_t header; /* from cmd_bootm.c */
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void do_bootm_linux (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
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ulong addr, ulong *len_ptr, int verify)
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{
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DECLARE_GLOBAL_DATA_PTR;
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ulong len = 0, checksum;
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ulong initrd_start, initrd_end;
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ulong data;
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void (*theKernel)(int zero, int arch, uint params);
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image_header_t *hdr = &header;
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bd_t *bd = gd->bd;
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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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theKernel = (void (*)(int, int, uint))ntohl(hdr->ih_ep);
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/*
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* Check if there is an initrd image
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*/
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if (argc >= 3) {
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SHOW_BOOT_PROGRESS (9);
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addr = simple_strtoul (argv[2], NULL, 16);
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printf ("## Loading Ramdisk Image at %08lx ...\n", addr);
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/* Copy header so we can blank CRC field for re-calculation */
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#ifdef CONFIG_HAS_DATAFLASH
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if (addr_dataflash (addr)) {
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read_dataflash (addr, sizeof (image_header_t),
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(char *) &header);
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} else
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#endif
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memcpy (&header, (char *) addr,
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sizeof (image_header_t));
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if (ntohl (hdr->ih_magic) != IH_MAGIC) {
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printf ("Bad Magic Number\n");
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SHOW_BOOT_PROGRESS (-10);
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do_reset (cmdtp, flag, argc, argv);
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}
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data = (ulong) & header;
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len = sizeof (image_header_t);
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checksum = ntohl (hdr->ih_hcrc);
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hdr->ih_hcrc = 0;
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if (crc32 (0, (char *) data, len) != checksum) {
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printf ("Bad Header Checksum\n");
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SHOW_BOOT_PROGRESS (-11);
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do_reset (cmdtp, flag, argc, argv);
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}
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SHOW_BOOT_PROGRESS (10);
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print_image_hdr (hdr);
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data = addr + sizeof (image_header_t);
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len = ntohl (hdr->ih_size);
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#ifdef CONFIG_HAS_DATAFLASH
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if (addr_dataflash (addr)) {
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read_dataflash (data, len, (char *) CFG_LOAD_ADDR);
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data = CFG_LOAD_ADDR;
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}
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#endif
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if (verify) {
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ulong csum = 0;
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printf (" Verifying Checksum ... ");
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csum = crc32 (0, (char *) data, len);
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if (csum != ntohl (hdr->ih_dcrc)) {
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printf ("Bad Data CRC\n");
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SHOW_BOOT_PROGRESS (-12);
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do_reset (cmdtp, flag, argc, argv);
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}
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printf ("OK\n");
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}
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SHOW_BOOT_PROGRESS (11);
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if ((hdr->ih_os != IH_OS_LINUX) ||
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(hdr->ih_arch != IH_CPU_ARM) ||
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(hdr->ih_type != IH_TYPE_RAMDISK)) {
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printf ("No Linux ARM Ramdisk Image\n");
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SHOW_BOOT_PROGRESS (-13);
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do_reset (cmdtp, flag, argc, argv);
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}
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#if defined(CONFIG_B2) || defined(CONFIG_EVB4510) || defined(CONFIG_ARMADILLO)
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/*
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*we need to copy the ramdisk to SRAM to let Linux boot
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*/
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memmove ((void *) ntohl(hdr->ih_load), (uchar *)data, len);
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data = ntohl(hdr->ih_load);
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#endif /* CONFIG_B2 || CONFIG_EVB4510 */
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/*
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* Now check if we have a multifile image
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*/
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} else if ((hdr->ih_type == IH_TYPE_MULTI) && (len_ptr[1])) {
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ulong tail = ntohl (len_ptr[0]) % 4;
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int i;
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SHOW_BOOT_PROGRESS (13);
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/* skip kernel length and terminator */
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data = (ulong) (&len_ptr[2]);
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/* skip any additional image length fields */
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for (i = 1; len_ptr[i]; ++i)
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data += 4;
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/* add kernel length, and align */
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data += ntohl (len_ptr[0]);
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if (tail) {
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data += 4 - tail;
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}
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len = ntohl (len_ptr[1]);
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} else {
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/*
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* no initrd image
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*/
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SHOW_BOOT_PROGRESS (14);
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len = data = 0;
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}
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#ifdef DEBUG
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if (!data) {
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printf ("No initrd\n");
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}
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#endif
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if (data) {
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initrd_start = data;
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initrd_end = initrd_start + len;
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} else {
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initrd_start = 0;
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initrd_end = 0;
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}
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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, bd->bi_arch_number, 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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