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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381 lines
9.9 KiB
381 lines
9.9 KiB
/*
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* (C) Copyright 2008 Semihalf
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*
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* (C) Copyright 2000-2006
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (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,
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* MA 02111-1307 USA
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*/
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#define DEBUG
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#include <common.h>
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#include <watchdog.h>
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#include <command.h>
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#include <image.h>
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#include <malloc.h>
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#include <zlib.h>
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#include <bzlib.h>
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#include <environment.h>
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#include <asm/byteorder.h>
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#if defined(CONFIG_OF_LIBFDT)
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#include <fdt.h>
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#include <libfdt.h>
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#include <fdt_support.h>
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static void fdt_error (const char *msg);
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static ulong get_fdt (ulong alloc_current, cmd_tbl_t *cmdtp, int flag,
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int argc, char *argv[],
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image_header_t *hdr, char **of_flat_tree);
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#endif
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#ifdef CFG_INIT_RAM_LOCK
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#include <asm/cache.h>
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#endif
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DECLARE_GLOBAL_DATA_PTR;
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extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
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static ulong get_sp (void);
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static void set_clocks_in_mhz (bd_t *kbd);
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void __attribute__((noinline))
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do_bootm_linux(cmd_tbl_t *cmdtp, int flag,
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int argc, char *argv[],
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image_header_t *hdr,
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int verify)
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{
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ulong sp, sp_limit, alloc_current;
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ulong initrd_start, initrd_end;
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ulong rd_data_start, rd_data_end, rd_len;
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ulong cmd_start, cmd_end;
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bd_t *kbd;
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void (*kernel)(bd_t *, ulong, ulong, ulong, ulong);
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#if defined(CONFIG_OF_LIBFDT)
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char *of_flat_tree;
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#endif
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/*
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* Booting a (Linux) kernel image
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*
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* Allocate space for command line and board info - the
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* address should be as high as possible within the reach of
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* the kernel (see CFG_BOOTMAPSZ settings), but in unused
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* memory, which means far enough below the current stack
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* pointer.
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*/
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sp = get_sp();
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debug ("## Current stack ends at 0x%08lx ", sp);
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alloc_current = sp_limit = get_boot_sp_limit(sp);
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debug ("=> set upper limit to 0x%08lx\n", sp_limit);
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/* allocate space and init command line */
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alloc_current = get_boot_cmdline (alloc_current, &cmd_start, &cmd_end);
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/* allocate space for kernel copy of board info */
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alloc_current = get_boot_kbd (alloc_current, &kbd);
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set_clocks_in_mhz(kbd);
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/* find kernel */
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kernel = (void (*)(bd_t *, ulong, ulong, ulong, ulong))image_get_ep (hdr);
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/* find ramdisk */
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get_ramdisk (cmdtp, flag, argc, argv, hdr, verify,
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IH_ARCH_PPC, &rd_data_start, &rd_data_end);
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rd_len = rd_data_end - rd_data_start;
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alloc_current = ramdisk_high (alloc_current, rd_data_start, rd_len,
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kbd, sp_limit, get_sp (),
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&initrd_start, &initrd_end);
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#if defined(CONFIG_OF_LIBFDT)
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/* find flattened device tree */
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alloc_current = get_fdt (alloc_current,
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cmdtp, flag, argc, argv, hdr, &of_flat_tree);
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/*
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* Add the chosen node if it doesn't exist, add the env and bd_t
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* if the user wants it (the logic is in the subroutines).
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*/
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if (of_flat_tree) {
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if (fdt_chosen(of_flat_tree, initrd_start, initrd_end, 0) < 0) {
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fdt_error ("/chosen node create failed");
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do_reset (cmdtp, flag, argc, argv);
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}
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#ifdef CONFIG_OF_HAS_UBOOT_ENV
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if (fdt_env(of_flat_tree) < 0) {
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fdt_error ("/u-boot-env node create failed");
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do_reset (cmdtp, flag, argc, argv);
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}
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#endif
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#ifdef CONFIG_OF_HAS_BD_T
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if (fdt_bd_t(of_flat_tree) < 0) {
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fdt_error ("/bd_t node create failed");
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do_reset (cmdtp, flag, argc, argv);
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}
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#endif
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#ifdef CONFIG_OF_BOARD_SETUP
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/* Call the board-specific fixup routine */
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ft_board_setup(of_flat_tree, gd->bd);
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#endif
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}
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#endif /* CONFIG_OF_LIBFDT */
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debug ("## Transferring control to Linux (at address %08lx) ...\n",
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(ulong)kernel);
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show_boot_progress (15);
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#if defined(CFG_INIT_RAM_LOCK) && !defined(CONFIG_E500)
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unlock_ram_in_cache();
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#endif
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#if defined(CONFIG_OF_LIBFDT)
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if (of_flat_tree) { /* device tree; boot new style */
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/*
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* Linux Kernel Parameters (passing device tree):
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* r3: pointer to the fdt, followed by the board info data
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* r4: physical pointer to the kernel itself
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* r5: NULL
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* r6: NULL
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* r7: NULL
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*/
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(*kernel) ((bd_t *)of_flat_tree, (ulong)kernel, 0, 0, 0);
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/* does not return */
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}
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#endif
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/*
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* Linux Kernel Parameters (passing board info data):
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* r3: ptr to board info data
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* r4: initrd_start or 0 if no initrd
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* r5: initrd_end - unused if r4 is 0
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* r6: Start of command line string
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* r7: End of command line string
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*/
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(*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end);
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/* does not return */
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}
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static ulong get_sp (void)
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{
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ulong sp;
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asm( "mr %0,1": "=r"(sp) : );
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return sp;
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}
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static void set_clocks_in_mhz (bd_t *kbd)
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{
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char *s;
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if ((s = getenv ("clocks_in_mhz")) != NULL) {
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/* convert all clock information to MHz */
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kbd->bi_intfreq /= 1000000L;
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kbd->bi_busfreq /= 1000000L;
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#if defined(CONFIG_MPC8220)
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kbd->bi_inpfreq /= 1000000L;
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kbd->bi_pcifreq /= 1000000L;
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kbd->bi_pevfreq /= 1000000L;
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kbd->bi_flbfreq /= 1000000L;
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kbd->bi_vcofreq /= 1000000L;
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#endif
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#if defined(CONFIG_CPM2)
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kbd->bi_cpmfreq /= 1000000L;
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kbd->bi_brgfreq /= 1000000L;
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kbd->bi_sccfreq /= 1000000L;
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kbd->bi_vco /= 1000000L;
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#endif
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#if defined(CONFIG_MPC5xxx)
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kbd->bi_ipbfreq /= 1000000L;
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kbd->bi_pcifreq /= 1000000L;
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#endif /* CONFIG_MPC5xxx */
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}
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}
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#if defined(CONFIG_OF_LIBFDT)
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static void fdt_error (const char *msg)
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{
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puts ("ERROR: ");
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puts (msg);
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puts (" - must RESET the board to recover.\n");
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}
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static ulong get_fdt (ulong alloc_current,
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cmd_tbl_t *cmdtp, int flag,
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int argc, char *argv[],
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image_header_t *hdr, char **of_flat_tree)
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{
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image_header_t *fdt_hdr;
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ulong fdt_relocate = 0;
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char *fdt = NULL;
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ulong new_alloc_current;
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if(argc > 3) {
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fdt = (char *)simple_strtoul (argv[3], NULL, 16);
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debug ("## Checking for 'FDT'/'FDT image' at %08lx\n", fdt);
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/* copy from dataflash if needed */
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fdt = (char *)gen_get_image ((ulong)fdt);
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fdt_hdr = (image_header_t *)fdt;
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if (fdt_check_header (fdt) == 0) {
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printf ("## Flattened Device Tree blob at %08lx\n", fdt);
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#ifndef CFG_NO_FLASH
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if (addr2info ((ulong)fdt) != NULL)
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fdt_relocate = 1;
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#endif
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} else if (image_check_magic (fdt_hdr)) {
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ulong image_start, image_end;
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ulong load_start, load_end;
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printf ("## Flattened Device Tree Image at %08lx\n",
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fdt_hdr);
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print_image_hdr (fdt_hdr);
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image_start = (ulong)fdt_hdr;
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image_end = image_get_image_end (fdt_hdr);
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load_start = image_get_load (fdt_hdr);
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load_end = load_start + image_get_data_size (fdt_hdr);
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if ((load_start < image_end) && (load_end > image_start)) {
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fdt_error ("fdt overwritten");
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do_reset (cmdtp, flag, argc, argv);
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}
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puts (" Verifying Checksum ... ");
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if (!image_check_hcrc (fdt_hdr)) {
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fdt_error ("fdt header checksum invalid");
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do_reset (cmdtp, flag, argc, argv);
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}
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if (!image_check_dcrc (fdt_hdr)) {
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fdt_error ("fdt checksum invalid");
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do_reset (cmdtp, flag, argc, argv);
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}
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puts ("OK\n");
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if (!image_check_type (fdt_hdr, IH_TYPE_FLATDT)) {
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fdt_error ("uImage is not a fdt");
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do_reset (cmdtp, flag, argc, argv);
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}
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if (image_get_comp (fdt_hdr) != IH_COMP_NONE) {
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fdt_error ("uImage is compressed");
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do_reset (cmdtp, flag, argc, argv);
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}
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if (fdt_check_header ((char *)image_get_data (fdt_hdr)) != 0) {
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fdt_error ("uImage data is not a fdt");
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do_reset (cmdtp, flag, argc, argv);
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}
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memmove ((void *)image_get_load (fdt_hdr),
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(void *)image_get_data (fdt_hdr),
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image_get_data_size (fdt_hdr));
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fdt = (char *)image_get_load (fdt_hdr);
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} else {
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fdt_error ("Did not find a Flattened Device Tree");
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do_reset (cmdtp, flag, argc, argv);
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}
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printf (" Booting using the fdt at 0x%x\n",
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fdt);
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} else if (image_check_type (hdr, IH_TYPE_MULTI)) {
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ulong fdt_data, fdt_len;
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printf ("## Flattened Device Tree from multi "
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"component Image at %08lX\n", (ulong)hdr);
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image_multi_getimg (hdr, 2, &fdt_data, &fdt_len);
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if (fdt_len) {
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fdt = (char *)fdt_data;
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printf (" Booting using the fdt at 0x%x\n", fdt);
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#ifndef CFG_NO_FLASH
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/* move the blob if it is in flash (set of_relocte) */
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if (addr2info ((ulong)fdt) != NULL)
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fdt_relocate = 1;
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#endif
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if (fdt_check_header (fdt) != 0) {
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fdt_error ("image is not a fdt");
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do_reset (cmdtp, flag, argc, argv);
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}
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if (be32_to_cpu (fdt_totalsize (fdt)) != fdt_len) {
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fdt_error ("fdt size != image size");
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do_reset (cmdtp, flag, argc, argv);
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}
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} else {
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debug (" Did not find a Flattened Device Tree");
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}
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}
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#ifdef CFG_BOOTMAPSZ
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/*
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* The blob must be within CFG_BOOTMAPSZ,
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* so we flag it to be copied if it is not.
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*/
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if (fdt >= (char *)CFG_BOOTMAPSZ)
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fdt_relocate = 1;
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#endif
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/* move flattend device tree if needed */
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if (fdt_relocate) {
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int err;
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ulong of_start, of_len;
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of_len = be32_to_cpu (fdt_totalsize (fdt));
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/* position on a 4K boundary before the alloc_current */
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of_start = alloc_current - of_len;
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of_start &= ~(4096 - 1); /* align on page */
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debug ("## device tree at 0x%08lX ... 0x%08lX (len=%ld=0x%lX)\n",
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(ulong)fdt, (ulong)fdt + of_len - 1,
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of_len, of_len);
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printf (" Loading Device Tree to %08lx, end %08lx ... ",
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of_start, of_start + of_len - 1);
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err = fdt_open_into (fdt, (void *)of_start, of_len);
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if (err != 0) {
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fdt_error ("fdt move failed");
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do_reset (cmdtp, flag, argc, argv);
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}
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puts ("OK\n");
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*of_flat_tree = (char *)of_start;
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new_alloc_current = of_start;
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} else {
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*of_flat_tree = fdt;
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new_alloc_current = alloc_current;
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}
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return new_alloc_current;
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}
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#endif
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