PPC implementation of do_bootm_linux() routine is moved to a dedicated file lib_ppc/ppc_linux.c Signed-off-by: Marian Balakowicz <m8@semihalf.com>master
Marian Balakowicz
17 years ago
committed by
Wolfgang Denk
parent
b97a2a0a21
commit
5d3cc55ecb
@ -0,0 +1,589 @@ |
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/*
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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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#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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#endif |
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#if defined(CONFIG_OF_FLAT_TREE) |
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#include <ft_build.h> |
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#endif |
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#ifdef CONFIG_LOGBUFFER |
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#include <logbuff.h> |
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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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#define CHUNKSZ (64 * 1024) |
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DECLARE_GLOBAL_DATA_PTR; |
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extern image_header_t header; |
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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_CMD_BDI) |
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extern int do_bdinfo(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); |
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#endif |
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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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ulong addr, |
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ulong *len_ptr, |
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int verify) |
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{ |
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ulong sp; |
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ulong len; |
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ulong initrd_start, initrd_end; |
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ulong cmd_start, cmd_end; |
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ulong initrd_high; |
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ulong data; |
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int initrd_copy_to_ram = 1; |
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char *cmdline; |
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char *s; |
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bd_t *kbd; |
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void (*kernel)(bd_t *, ulong, ulong, ulong, ulong); |
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image_header_t *hdr = &header; |
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#if defined(CONFIG_OF_FLAT_TREE) || defined(CONFIG_OF_LIBFDT) |
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char *of_flat_tree = NULL; |
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ulong of_data = 0; |
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#endif |
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if ((s = getenv ("initrd_high")) != NULL) { |
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/* a value of "no" or a similar string will act like 0,
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* turning the "load high" feature off. This is intentional. |
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*/ |
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initrd_high = simple_strtoul(s, NULL, 16); |
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if (initrd_high == ~0) |
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initrd_copy_to_ram = 0; |
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} else { /* not set, no restrictions to load high */ |
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initrd_high = ~0; |
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} |
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#ifdef CONFIG_LOGBUFFER |
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kbd=gd->bd; |
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/* Prevent initrd from overwriting logbuffer */ |
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if (initrd_high < (kbd->bi_memsize-LOGBUFF_LEN-LOGBUFF_OVERHEAD)) |
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initrd_high = kbd->bi_memsize-LOGBUFF_LEN-LOGBUFF_OVERHEAD; |
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debug ("## Logbuffer at 0x%08lX ", kbd->bi_memsize-LOGBUFF_LEN); |
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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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asm( "mr %0,1": "=r"(sp) : ); |
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debug ("## Current stack ends at 0x%08lX ", sp); |
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sp -= 2048; /* just to be sure */ |
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if (sp > CFG_BOOTMAPSZ) |
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sp = CFG_BOOTMAPSZ; |
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sp &= ~0xF; |
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debug ("=> set upper limit to 0x%08lX\n", sp); |
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cmdline = (char *)((sp - CFG_BARGSIZE) & ~0xF); |
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kbd = (bd_t *)(((ulong)cmdline - sizeof(bd_t)) & ~0xF); |
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if ((s = getenv("bootargs")) == NULL) |
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s = ""; |
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strcpy (cmdline, s); |
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cmd_start = (ulong)&cmdline[0]; |
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cmd_end = cmd_start + strlen(cmdline); |
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*kbd = *(gd->bd); |
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#ifdef DEBUG |
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printf ("## cmdline at 0x%08lX ... 0x%08lX\n", cmd_start, cmd_end); |
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#if defined(CONFIG_CMD_BDI) |
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do_bdinfo (NULL, 0, 0, NULL); |
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#endif |
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#endif |
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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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kernel = (void (*)(bd_t *, ulong, ulong, ulong, ulong))image_get_ep (hdr); |
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/*
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* Check if there is an initrd image |
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*/ |
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#if defined(CONFIG_OF_FLAT_TREE) || defined(CONFIG_OF_LIBFDT) |
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/* Look for a '-' which indicates to ignore the ramdisk argument */ |
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if (argc >= 3 && strcmp(argv[2], "-") == 0) { |
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debug ("Skipping initrd\n"); |
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len = data = 0; |
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} |
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else |
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#endif |
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if (argc >= 3) { |
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debug ("Not skipping initrd\n"); |
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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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hdr = (image_header_t *)addr; |
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if (!image_check_magic (hdr)) { |
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puts ("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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if (!image_check_hcrc (hdr)) { |
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puts ("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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if (verify) { |
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puts (" Verifying Checksum ... "); |
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if (!image_check_dcrc_wd (hdr, CHUNKSZ)) { |
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puts ("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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puts ("OK\n"); |
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} |
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show_boot_progress (11); |
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if (!image_check_os (hdr, IH_OS_LINUX) || |
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!image_check_arch (hdr, IH_ARCH_PPC) || |
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!image_check_type (hdr, IH_TYPE_RAMDISK)) { |
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puts ("No Linux PPC 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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data = image_get_data (hdr); |
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len = image_get_data_size (hdr); |
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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 (image_check_type (hdr, IH_TYPE_MULTI) && (len_ptr[1])) { |
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u_long tail = image_to_cpu (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 += image_to_cpu (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 = image_to_cpu (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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#if defined(CONFIG_OF_FLAT_TREE) || defined(CONFIG_OF_LIBFDT) |
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if(argc > 3) { |
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of_flat_tree = (char *) simple_strtoul(argv[3], NULL, 16); |
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hdr = (image_header_t *)of_flat_tree; |
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#if defined(CONFIG_OF_FLAT_TREE) |
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if (*((ulong *)(of_flat_tree + image_get_header_size ())) != OF_DT_HEADER) { |
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#else |
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if (fdt_check_header (of_flat_tree + image_get_header_size ()) != 0) { |
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#endif |
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#ifndef CFG_NO_FLASH |
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if (addr2info((ulong)of_flat_tree) != NULL) |
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of_data = (ulong)of_flat_tree; |
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#endif |
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} else if (image_check_magic (hdr)) { |
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printf("## Flat Device Tree at %08lX\n", hdr); |
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print_image_hdr (hdr); |
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if ((image_get_load (hdr) < ((unsigned long)hdr + image_get_image_size (hdr))) && |
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((image_get_load (hdr) + image_get_data_size (hdr)) > (unsigned long)hdr)) { |
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puts ("ERROR: fdt overwritten - " |
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"must RESET the board to recover.\n"); |
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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 (hdr)) { |
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puts ("ERROR: fdt header checksum invalid - " |
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"must RESET the board to recover.\n"); |
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do_reset (cmdtp, flag, argc, argv); |
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} |
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if (!image_check_dcrc (hdr)) { |
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puts ("ERROR: fdt checksum invalid - " |
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"must RESET the board to recover.\n"); |
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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 (hdr, IH_TYPE_FLATDT)) { |
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puts ("ERROR: uImage is not a fdt - " |
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"must RESET the board to recover.\n"); |
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do_reset (cmdtp, flag, argc, argv); |
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} |
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if (image_get_comp (hdr) != IH_COMP_NONE) { |
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puts ("ERROR: uImage is compressed - " |
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"must RESET the board to recover.\n"); |
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do_reset (cmdtp, flag, argc, argv); |
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} |
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#if defined(CONFIG_OF_FLAT_TREE) |
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if (*((ulong *)(of_flat_tree + image_get_header_size ())) != OF_DT_HEADER) { |
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#else |
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if (fdt_check_header (of_flat_tree + image_get_header_size ()) != 0) { |
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#endif |
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puts ("ERROR: uImage data is not a fdt - " |
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"must RESET the board to recover.\n"); |
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do_reset (cmdtp, flag, argc, argv); |
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} |
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memmove ((void *)image_get_load (hdr), |
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(void *)(of_flat_tree + image_get_header_size ()), |
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image_get_data_size (hdr)); |
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of_flat_tree = (char *)image_get_load (hdr); |
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} else { |
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puts ("Did not find a flat Flat Device Tree.\n" |
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"Must RESET the board to recover.\n"); |
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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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of_flat_tree); |
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} else if (image_check_type (hdr, IH_TYPE_MULTI) && (len_ptr[1]) && (len_ptr[2])) { |
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u_long tail = image_to_cpu (len_ptr[0]) % 4; |
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int i; |
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/* skip kernel length, initrd length, and terminator */ |
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of_flat_tree = (char *)(&len_ptr[3]); |
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/* skip any additional image length fields */ |
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for (i=2; len_ptr[i]; ++i) |
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of_flat_tree += 4; |
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/* add kernel length, and align */ |
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of_flat_tree += image_to_cpu (len_ptr[0]); |
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if (tail) { |
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of_flat_tree += 4 - tail; |
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} |
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|
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/* add initrd length, and align */ |
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tail = image_to_cpu (len_ptr[1]) % 4; |
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of_flat_tree += image_to_cpu (len_ptr[1]); |
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if (tail) { |
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of_flat_tree += 4 - tail; |
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} |
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#ifndef CFG_NO_FLASH |
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/* move the blob if it is in flash (set of_data to !null) */ |
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if (addr2info ((ulong)of_flat_tree) != NULL) |
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of_data = (ulong)of_flat_tree; |
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#endif |
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#if defined(CONFIG_OF_FLAT_TREE) |
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if (*((ulong *)(of_flat_tree)) != OF_DT_HEADER) { |
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#else |
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if (fdt_check_header (of_flat_tree) != 0) { |
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#endif |
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puts ("ERROR: image is not a fdt - " |
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"must RESET the board to recover.\n"); |
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do_reset (cmdtp, flag, argc, argv); |
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} |
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#if defined(CONFIG_OF_FLAT_TREE) |
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if (((struct boot_param_header *)of_flat_tree)->totalsize != |
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image_to_cpu (len_ptr[2])) { |
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#else |
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if (be32_to_cpu (fdt_totalsize (of_flat_tree)) != |
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image_to_cpu (len_ptr[2])) { |
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#endif |
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puts ("ERROR: fdt size != image size - " |
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"must RESET the board to recover.\n"); |
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do_reset (cmdtp, flag, argc, argv); |
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} |
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} |
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#endif |
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if (!data) { |
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debug ("No initrd\n"); |
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} |
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if (data) { |
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if (!initrd_copy_to_ram) { /* zero-copy ramdisk support */ |
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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 = (ulong)kbd - len; |
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initrd_start &= ~(4096 - 1); /* align on page */ |
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if (initrd_high) { |
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ulong nsp; |
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/*
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* the inital ramdisk does not need to be within |
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* CFG_BOOTMAPSZ as it is not accessed until after |
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* the mm system is initialised. |
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* |
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* do the stack bottom calculation again and see if |
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* the initrd will fit just below the monitor stack |
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* bottom without overwriting the area allocated |
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* above for command line args and board info. |
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*/ |
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asm( "mr %0,1": "=r"(nsp) : ); |
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nsp -= 2048; /* just to be sure */ |
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nsp &= ~0xF; |
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if (nsp > initrd_high) /* limit as specified */ |
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nsp = initrd_high; |
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nsp -= len; |
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nsp &= ~(4096 - 1); /* align on page */ |
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if (nsp >= sp) |
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initrd_start = nsp; |
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} |
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show_boot_progress (12); |
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debug ("## initrd at 0x%08lX ... 0x%08lX (len=%ld=0x%lX)\n", |
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data, data + len - 1, len, len); |
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initrd_end = initrd_start + len; |
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printf (" Loading Ramdisk to %08lx, end %08lx ... ", |
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initrd_start, initrd_end); |
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#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG) |
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{ |
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size_t l = len; |
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void *to = (void *)initrd_start; |
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void *from = (void *)data; |
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|
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while (l > 0) { |
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size_t tail = (l > CHUNKSZ) ? CHUNKSZ : l; |
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WATCHDOG_RESET(); |
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memmove (to, from, tail); |
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to += tail; |
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from += tail; |
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l -= tail; |
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} |
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} |
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#else /* !(CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG) */ |
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memmove ((void *)initrd_start, (void *)data, len); |
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#endif /* CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG */ |
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puts ("OK\n"); |
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} |
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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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#if defined(CONFIG_OF_LIBFDT) |
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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 (of_flat_tree >= (char *)CFG_BOOTMAPSZ) |
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of_data = (ulong)of_flat_tree; |
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#endif |
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|
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/* move of_flat_tree if needed */ |
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if (of_data) { |
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int err; |
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ulong of_start, of_len; |
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|
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of_len = be32_to_cpu(fdt_totalsize(of_data)); |
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|
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/* position on a 4K boundary before the kbd */ |
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of_start = (ulong)kbd - 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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of_data, of_data + of_len - 1, of_len, of_len); |
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of_flat_tree = (char *)of_start; |
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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((void *)of_data, (void *)of_start, of_len); |
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if (err != 0) { |
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puts ("ERROR: fdt move failed - " |
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"must RESET the board to recover.\n"); |
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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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} |
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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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puts ("ERROR: /chosen node create failed - " |
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"must RESET the board to recover.\n"); |
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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) { |
||||
puts ("ERROR: /u-boot-env node create failed - " |
||||
"must RESET the board to recover.\n"); |
||||
do_reset (cmdtp, flag, argc, argv); |
||||
} |
||||
#endif |
||||
#ifdef CONFIG_OF_HAS_BD_T |
||||
if (fdt_bd_t(of_flat_tree) < 0) { |
||||
puts ("ERROR: /bd_t node create failed - " |
||||
"must RESET the board to recover.\n"); |
||||
do_reset (cmdtp, flag, argc, argv); |
||||
} |
||||
#endif |
||||
#ifdef CONFIG_OF_BOARD_SETUP |
||||
/* Call the board-specific fixup routine */ |
||||
ft_board_setup(of_flat_tree, gd->bd); |
||||
#endif |
||||
} |
||||
#endif /* CONFIG_OF_LIBFDT */ |
||||
#if defined(CONFIG_OF_FLAT_TREE) |
||||
#ifdef CFG_BOOTMAPSZ |
||||
/*
|
||||
* The blob must be within CFG_BOOTMAPSZ, |
||||
* so we flag it to be copied if it is not. |
||||
*/ |
||||
if (of_flat_tree >= (char *)CFG_BOOTMAPSZ) |
||||
of_data = (ulong)of_flat_tree; |
||||
#endif |
||||
|
||||
/* move of_flat_tree if needed */ |
||||
if (of_data) { |
||||
ulong of_start, of_len; |
||||
of_len = ((struct boot_param_header *)of_data)->totalsize; |
||||
|
||||
/* provide extra 8k pad */ |
||||
of_start = (ulong)kbd - of_len - 8192; |
||||
of_start &= ~(4096 - 1); /* align on page */ |
||||
debug ("## device tree at 0x%08lX ... 0x%08lX (len=%ld=0x%lX)\n", |
||||
of_data, of_data + of_len - 1, of_len, of_len); |
||||
|
||||
of_flat_tree = (char *)of_start; |
||||
printf (" Loading Device Tree to %08lx, end %08lx ... ", |
||||
of_start, of_start + of_len - 1); |
||||
memmove ((void *)of_start, (void *)of_data, of_len); |
||||
puts ("OK\n"); |
||||
} |
||||
/*
|
||||
* Create the /chosen node and modify the blob with board specific |
||||
* values as needed. |
||||
*/ |
||||
ft_setup(of_flat_tree, kbd, initrd_start, initrd_end); |
||||
/* ft_dump_blob(of_flat_tree); */ |
||||
#endif |
||||
debug ("## Transferring control to Linux (at address %08lx) ...\n", |
||||
(ulong)kernel); |
||||
|
||||
show_boot_progress (15); |
||||
|
||||
#if defined(CFG_INIT_RAM_LOCK) && !defined(CONFIG_E500) |
||||
unlock_ram_in_cache(); |
||||
#endif |
||||
|
||||
#if defined(CONFIG_OF_FLAT_TREE) || defined(CONFIG_OF_LIBFDT) |
||||
if (of_flat_tree) { /* device tree; boot new style */ |
||||
/*
|
||||
* Linux Kernel Parameters (passing device tree): |
||||
* r3: pointer to the fdt, followed by the board info data |
||||
* r4: physical pointer to the kernel itself |
||||
* r5: NULL |
||||
* r6: NULL |
||||
* r7: NULL |
||||
*/ |
||||
(*kernel) ((bd_t *)of_flat_tree, (ulong)kernel, 0, 0, 0); |
||||
/* does not return */ |
||||
} |
||||
#endif |
||||
/*
|
||||
* Linux Kernel Parameters (passing board info data): |
||||
* r3: ptr to board info data |
||||
* r4: initrd_start or 0 if no initrd |
||||
* r5: initrd_end - unused if r4 is 0 |
||||
* r6: Start of command line string |
||||
* r7: End of command line string |
||||
*/ |
||||
(*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end); |
||||
/* does not return */ |
||||
} |
||||
Loading…
Reference in new issue