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[new uImage] Move PPC do_bootm_linux() to lib_ppc/ppc_linux.c

Browse source 
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>
This commit is contained in:
Marian Balakowicz 2008-01-08 18:11:43 +01:00 committed by Wolfgang Denk
parent b97a2a0a21
commit 5d3cc55ecb
3 changed files with 592 additions and 543 deletions
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543
common/cmd_bootm.c
View file

@ -58,14 +58,6 @@ extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
#include <hush.h>
#endif
#ifdef CFG_INIT_RAM_LOCK
#include <asm/cache.h>
#endif
#ifdef CONFIG_LOGBUFFER
#include <logbuff.h>
#endif
#ifdef CONFIG_HAS_DATAFLASH
#include <dataflash.h>
#endif
@ -112,15 +104,8 @@ typedef void boot_os_Fcn (cmd_tbl_t *cmdtp, int flag,
ulong *len_ptr, /* multi-file image length table */
int verify); /* getenv("verify")[0] != 'n' */
#ifdef DEBUG
extern int do_bdinfo ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
#endif
#ifdef CONFIG_PPC
static boot_os_Fcn do_bootm_linux;
#else
extern boot_os_Fcn do_bootm_linux;
#endif
#ifdef CONFIG_SILENT_CONSOLE
static void fixup_silent_linux (void);
#endif
@ -475,532 +460,6 @@ fixup_silent_linux ()
}
#endif /* CONFIG_SILENT_CONSOLE */
#ifdef CONFIG_PPC
static void __attribute__((noinline))
do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
int argc, char *argv[],
ulong addr,
ulong *len_ptr,
int verify)
{
ulong sp;
ulong len;
ulong initrd_start, initrd_end;
ulong cmd_start, cmd_end;
ulong initrd_high;
ulong data;
int initrd_copy_to_ram = 1;
char *cmdline;
char *s;
bd_t *kbd;
void (*kernel)(bd_t *, ulong, ulong, ulong, ulong);
image_header_t *hdr = &header;
#if defined(CONFIG_OF_FLAT_TREE) || defined(CONFIG_OF_LIBFDT)
char *of_flat_tree = NULL;
ulong of_data = 0;
#endif
if ((s = getenv ("initrd_high")) != NULL) {
/* a value of "no" or a similar string will act like 0,
* turning the "load high" feature off. This is intentional.
*/
initrd_high = simple_strtoul(s, NULL, 16);
if (initrd_high == ~0)
initrd_copy_to_ram = 0;
} else { /* not set, no restrictions to load high */
initrd_high = ~0;
}
#ifdef CONFIG_LOGBUFFER
kbd=gd->bd;
/* Prevent initrd from overwriting logbuffer */
if (initrd_high < (kbd->bi_memsize-LOGBUFF_LEN-LOGBUFF_OVERHEAD))
initrd_high = kbd->bi_memsize-LOGBUFF_LEN-LOGBUFF_OVERHEAD;
debug ("## Logbuffer at 0x%08lX ", kbd->bi_memsize-LOGBUFF_LEN);
#endif
/*
* Booting a (Linux) kernel image
*
* Allocate space for command line and board info - the
* address should be as high as possible within the reach of
* the kernel (see CFG_BOOTMAPSZ settings), but in unused
* memory, which means far enough below the current stack
* pointer.
*/
asm( "mr %0,1": "=r"(sp) : );
debug ("## Current stack ends at 0x%08lX ", sp);
sp -= 2048; /* just to be sure */
if (sp > CFG_BOOTMAPSZ)
sp = CFG_BOOTMAPSZ;
sp &= ~0xF;
debug ("=> set upper limit to 0x%08lX\n", sp);
cmdline = (char *)((sp - CFG_BARGSIZE) & ~0xF);
kbd = (bd_t *)(((ulong)cmdline - sizeof(bd_t)) & ~0xF);
if ((s = getenv("bootargs")) == NULL)
s = "";
strcpy (cmdline, s);
cmd_start = (ulong)&cmdline[0];
cmd_end = cmd_start + strlen(cmdline);
*kbd = *(gd->bd);
#ifdef DEBUG
printf ("## cmdline at 0x%08lX ... 0x%08lX\n", cmd_start, cmd_end);
do_bdinfo (NULL, 0, 0, NULL);
#endif
if ((s = getenv ("clocks_in_mhz")) != NULL) {
/* convert all clock information to MHz */
kbd->bi_intfreq /= 1000000L;
kbd->bi_busfreq /= 1000000L;
#if defined(CONFIG_MPC8220)
kbd->bi_inpfreq /= 1000000L;
kbd->bi_pcifreq /= 1000000L;
kbd->bi_pevfreq /= 1000000L;
kbd->bi_flbfreq /= 1000000L;
kbd->bi_vcofreq /= 1000000L;
#endif
#if defined(CONFIG_CPM2)
kbd->bi_cpmfreq /= 1000000L;
kbd->bi_brgfreq /= 1000000L;
kbd->bi_sccfreq /= 1000000L;
kbd->bi_vco /= 1000000L;
#endif
#if defined(CONFIG_MPC5xxx)
kbd->bi_ipbfreq /= 1000000L;
kbd->bi_pcifreq /= 1000000L;
#endif /* CONFIG_MPC5xxx */
}
kernel = (void (*)(bd_t *, ulong, ulong, ulong, ulong))image_get_ep (hdr);
/*
* Check if there is an initrd image
*/
#if defined(CONFIG_OF_FLAT_TREE) || defined(CONFIG_OF_LIBFDT)
/* Look for a '-' which indicates to ignore the ramdisk argument */
if (argc >= 3 && strcmp(argv[2], "-") == 0) {
debug ("Skipping initrd\n");
len = data = 0;
}
else
#endif
if (argc >= 3) {
debug ("Not skipping initrd\n");
show_boot_progress (9);
addr = simple_strtoul(argv[2], NULL, 16);
printf ("## Loading RAMDisk Image at %08lx ...\n", addr);
hdr = (image_header_t *)addr;
if (!image_check_magic (hdr)) {
puts ("Bad Magic Number\n");
show_boot_progress (-10);
do_reset (cmdtp, flag, argc, argv);
}
if (!image_check_hcrc (hdr)) {
puts ("Bad Header Checksum\n");
show_boot_progress (-11);
do_reset (cmdtp, flag, argc, argv);
}
show_boot_progress (10);
print_image_hdr (hdr);
if (verify) {
puts (" Verifying Checksum ... ");
if (!image_check_dcrc_wd (hdr, CHUNKSZ)) {
puts ("Bad Data CRC\n");
show_boot_progress (-12);
do_reset (cmdtp, flag, argc, argv);
}
puts ("OK\n");
}
show_boot_progress (11);
if (!image_check_os (hdr, IH_OS_LINUX) ||
!image_check_arch (hdr, IH_ARCH_PPC) ||
!image_check_type (hdr, IH_TYPE_RAMDISK)) {
puts ("No Linux PPC Ramdisk Image\n");
show_boot_progress (-13);
do_reset (cmdtp, flag, argc, argv);
}
data = image_get_data (hdr);
len = image_get_data_size (hdr);
/*
* Now check if we have a multifile image
*/
} else if (image_check_type (hdr, IH_TYPE_MULTI) && (len_ptr[1])) {
u_long tail = image_to_cpu (len_ptr[0]) % 4;
int i;
show_boot_progress (13);
/* skip kernel length and terminator */
data = (ulong)(&len_ptr[2]);
/* skip any additional image length fields */
for (i=1; len_ptr[i]; ++i)
data += 4;
/* add kernel length, and align */
data += image_to_cpu (len_ptr[0]);
if (tail) {
data += 4 - tail;
}
len = image_to_cpu (len_ptr[1]);
} else {
/*
* no initrd image
*/
show_boot_progress (14);
len = data = 0;
}
#if defined(CONFIG_OF_FLAT_TREE) || defined(CONFIG_OF_LIBFDT)
if(argc > 3) {
of_flat_tree = (char *) simple_strtoul(argv[3], NULL, 16);
hdr = (image_header_t *)of_flat_tree;
#if defined(CONFIG_OF_FLAT_TREE)
if (*((ulong *)(of_flat_tree + image_get_header_size ())) != OF_DT_HEADER) {
#else
if (fdt_check_header (of_flat_tree + image_get_header_size ()) != 0) {
#endif
#ifndef CFG_NO_FLASH
if (addr2info((ulong)of_flat_tree) != NULL)
of_data = (ulong)of_flat_tree;
#endif
} else if (image_check_magic (hdr)) {
printf("## Flat Device Tree at %08lX\n", hdr);
print_image_hdr (hdr);
if ((image_get_load (hdr) < ((unsigned long)hdr + image_get_image_size (hdr))) &&
((image_get_load (hdr) + image_get_data_size (hdr)) > (unsigned long)hdr)) {
puts ("ERROR: fdt overwritten - "
"must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
puts (" Verifying Checksum ... ");
if (!image_check_hcrc (hdr)) {
puts ("ERROR: fdt header checksum invalid - "
"must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
if (!image_check_dcrc (hdr)) {
puts ("ERROR: fdt checksum invalid - "
"must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
puts ("OK\n");
if (!image_check_type (hdr, IH_TYPE_FLATDT)) {
puts ("ERROR: uImage is not a fdt - "
"must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
if (image_get_comp (hdr) != IH_COMP_NONE) {
puts ("ERROR: uImage is compressed - "
"must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
#if defined(CONFIG_OF_FLAT_TREE)
if (*((ulong *)(of_flat_tree + image_get_header_size ())) != OF_DT_HEADER) {
#else
if (fdt_check_header (of_flat_tree + image_get_header_size ()) != 0) {
#endif
puts ("ERROR: uImage data is not a fdt - "
"must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
memmove ((void *)image_get_load (hdr),
(void *)(of_flat_tree + image_get_header_size ()),
image_get_data_size (hdr));
of_flat_tree = (char *)image_get_load (hdr);
} else {
puts ("Did not find a flat Flat Device Tree.\n"
"Must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
printf (" Booting using the fdt at 0x%x\n",
of_flat_tree);
} else if (image_check_type (hdr, IH_TYPE_MULTI) && (len_ptr[1]) && (len_ptr[2])) {
u_long tail = image_to_cpu (len_ptr[0]) % 4;
int i;
/* skip kernel length, initrd length, and terminator */
of_flat_tree = (char *)(&len_ptr[3]);
/* skip any additional image length fields */
for (i=2; len_ptr[i]; ++i)
of_flat_tree += 4;
/* add kernel length, and align */
of_flat_tree += image_to_cpu (len_ptr[0]);
if (tail) {
of_flat_tree += 4 - tail;
}
/* add initrd length, and align */
tail = image_to_cpu (len_ptr[1]) % 4;
of_flat_tree += image_to_cpu (len_ptr[1]);
if (tail) {
of_flat_tree += 4 - tail;
}
#ifndef CFG_NO_FLASH
/* move the blob if it is in flash (set of_data to !null) */
if (addr2info ((ulong)of_flat_tree) != NULL)
of_data = (ulong)of_flat_tree;
#endif
#if defined(CONFIG_OF_FLAT_TREE)
if (*((ulong *)(of_flat_tree)) != OF_DT_HEADER) {
#else
if (fdt_check_header (of_flat_tree) != 0) {
#endif
puts ("ERROR: image is not a fdt - "
"must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
#if defined(CONFIG_OF_FLAT_TREE)
if (((struct boot_param_header *)of_flat_tree)->totalsize !=
image_to_cpu (len_ptr[2])) {
#else
if (be32_to_cpu (fdt_totalsize (of_flat_tree)) !=
image_to_cpu (len_ptr[2])) {
#endif
puts ("ERROR: fdt size != image size - "
"must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
}
#endif
if (!data) {
debug ("No initrd\n");
}
if (data) {
if (!initrd_copy_to_ram) { /* zero-copy ramdisk support */
initrd_start = data;
initrd_end = initrd_start + len;
} else {
initrd_start = (ulong)kbd - len;
initrd_start &= ~(4096 - 1); /* align on page */
if (initrd_high) {
ulong nsp;
/*
* the inital ramdisk does not need to be within
* CFG_BOOTMAPSZ as it is not accessed until after
* the mm system is initialised.
*
* do the stack bottom calculation again and see if
* the initrd will fit just below the monitor stack
* bottom without overwriting the area allocated
* above for command line args and board info.
*/
asm( "mr %0,1": "=r"(nsp) : );
nsp -= 2048; /* just to be sure */
nsp &= ~0xF;
if (nsp > initrd_high) /* limit as specified */
nsp = initrd_high;
nsp -= len;
nsp &= ~(4096 - 1); /* align on page */
if (nsp >= sp)
initrd_start = nsp;
}
show_boot_progress (12);
debug ("## initrd at 0x%08lX ... 0x%08lX (len=%ld=0x%lX)\n",
data, data + len - 1, len, len);
initrd_end = initrd_start + len;
printf (" Loading Ramdisk to %08lx, end %08lx ... ",
initrd_start, initrd_end);
#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
{
size_t l = len;
void *to = (void *)initrd_start;
void *from = (void *)data;
while (l > 0) {
size_t tail = (l > CHUNKSZ) ? CHUNKSZ : l;
WATCHDOG_RESET();
memmove (to, from, tail);
to += tail;
from += tail;
l -= tail;
}
}
#else /* !(CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG) */
memmove ((void *)initrd_start, (void *)data, len);
#endif /* CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG */
puts ("OK\n");
}
} else {
initrd_start = 0;
initrd_end = 0;
}
#if defined(CONFIG_OF_LIBFDT)
#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) {
int err;
ulong of_start, of_len;
of_len = be32_to_cpu(fdt_totalsize(of_data));
/* position on a 4K boundary before the kbd */
of_start = (ulong)kbd - of_len;
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);
err = fdt_open_into((void *)of_data, (void *)of_start, of_len);
if (err != 0) {
puts ("ERROR: fdt move failed - "
"must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
puts ("OK\n");
}
/*
* Add the chosen node if it doesn't exist, add the env and bd_t
* if the user wants it (the logic is in the subroutines).
*/
if (of_flat_tree) {
if (fdt_chosen(of_flat_tree, initrd_start, initrd_end, 0) < 0) {
puts ("ERROR: /chosen node create failed - "
"must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
#ifdef CONFIG_OF_HAS_UBOOT_ENV
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 */
}
#endif /* CONFIG_PPC */
static void
do_bootm_netbsd (cmd_tbl_t *cmdtp, int flag,
int argc, char *argv[],

3
lib_ppc/Makefile
View file

@ -28,7 +28,8 @@ LIB = $(obj)lib$(ARCH).a
SOBJS = ppcstring.o ticks.o
COBJS = board.o \
bat_rw.o cache.o extable.o kgdb.o time.o interrupts.o
bat_rw.o cache.o extable.o kgdb.o time.o interrupts.o \
ppc_linux.o
SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS))

589
lib_ppc/ppc_linux.c Normal file
View file

@ -0,0 +1,589 @@
/*
* (C) Copyright 2008 Semihalf
*
* (C) Copyright 2000-2006
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <watchdog.h>
#include <command.h>
#include <image.h>
#include <malloc.h>
#include <zlib.h>
#include <bzlib.h>
#include <environment.h>
#include <asm/byteorder.h>
#if defined(CONFIG_OF_LIBFDT)
#include <fdt.h>
#include <libfdt.h>
#include <fdt_support.h>
#endif
#if defined(CONFIG_OF_FLAT_TREE)
#include <ft_build.h>
#endif
#ifdef CONFIG_LOGBUFFER
#include <logbuff.h>
#endif
#ifdef CFG_INIT_RAM_LOCK
#include <asm/cache.h>
#endif
#define CHUNKSZ (64 * 1024)
DECLARE_GLOBAL_DATA_PTR;
extern image_header_t header;
/*cmd_boot.c*/
extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
#if defined(CONFIG_CMD_BDI)
extern int do_bdinfo(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
#endif
void __attribute__((noinline))
do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
int argc, char *argv[],
ulong addr,
ulong *len_ptr,
int verify)
{
ulong sp;
ulong len;
ulong initrd_start, initrd_end;
ulong cmd_start, cmd_end;
ulong initrd_high;
ulong data;
int initrd_copy_to_ram = 1;
char *cmdline;
char *s;
bd_t *kbd;
void (*kernel)(bd_t *, ulong, ulong, ulong, ulong);
image_header_t *hdr = &header;
#if defined(CONFIG_OF_FLAT_TREE) || defined(CONFIG_OF_LIBFDT)
char *of_flat_tree = NULL;
ulong of_data = 0;
#endif
if ((s = getenv ("initrd_high")) != NULL) {
/* a value of "no" or a similar string will act like 0,
* turning the "load high" feature off. This is intentional.
*/
initrd_high = simple_strtoul(s, NULL, 16);
if (initrd_high == ~0)
initrd_copy_to_ram = 0;
} else { /* not set, no restrictions to load high */
initrd_high = ~0;
}
#ifdef CONFIG_LOGBUFFER
kbd=gd->bd;
/* Prevent initrd from overwriting logbuffer */
if (initrd_high < (kbd->bi_memsize-LOGBUFF_LEN-LOGBUFF_OVERHEAD))
initrd_high = kbd->bi_memsize-LOGBUFF_LEN-LOGBUFF_OVERHEAD;
debug ("## Logbuffer at 0x%08lX ", kbd->bi_memsize-LOGBUFF_LEN);
#endif
/*
* Booting a (Linux) kernel image
*
* Allocate space for command line and board info - the
* address should be as high as possible within the reach of
* the kernel (see CFG_BOOTMAPSZ settings), but in unused
* memory, which means far enough below the current stack
* pointer.
*/
asm( "mr %0,1": "=r"(sp) : );
debug ("## Current stack ends at 0x%08lX ", sp);
sp -= 2048; /* just to be sure */
if (sp > CFG_BOOTMAPSZ)
sp = CFG_BOOTMAPSZ;
sp &= ~0xF;
debug ("=> set upper limit to 0x%08lX\n", sp);
cmdline = (char *)((sp - CFG_BARGSIZE) & ~0xF);
kbd = (bd_t *)(((ulong)cmdline - sizeof(bd_t)) & ~0xF);
if ((s = getenv("bootargs")) == NULL)
s = "";
strcpy (cmdline, s);
cmd_start = (ulong)&cmdline[0];
cmd_end = cmd_start + strlen(cmdline);
*kbd = *(gd->bd);
#ifdef DEBUG
printf ("## cmdline at 0x%08lX ... 0x%08lX\n", cmd_start, cmd_end);
#if defined(CONFIG_CMD_BDI)
do_bdinfo (NULL, 0, 0, NULL);
#endif
#endif
if ((s = getenv ("clocks_in_mhz")) != NULL) {
/* convert all clock information to MHz */
kbd->bi_intfreq /= 1000000L;
kbd->bi_busfreq /= 1000000L;
#if defined(CONFIG_MPC8220)
kbd->bi_inpfreq /= 1000000L;
kbd->bi_pcifreq /= 1000000L;
kbd->bi_pevfreq /= 1000000L;
kbd->bi_flbfreq /= 1000000L;
kbd->bi_vcofreq /= 1000000L;
#endif
#if defined(CONFIG_CPM2)
kbd->bi_cpmfreq /= 1000000L;
kbd->bi_brgfreq /= 1000000L;
kbd->bi_sccfreq /= 1000000L;
kbd->bi_vco /= 1000000L;
#endif
#if defined(CONFIG_MPC5xxx)
kbd->bi_ipbfreq /= 1000000L;
kbd->bi_pcifreq /= 1000000L;
#endif /* CONFIG_MPC5xxx */
}
kernel = (void (*)(bd_t *, ulong, ulong, ulong, ulong))image_get_ep (hdr);
/*
* Check if there is an initrd image
*/
#if defined(CONFIG_OF_FLAT_TREE) || defined(CONFIG_OF_LIBFDT)
/* Look for a '-' which indicates to ignore the ramdisk argument */
if (argc >= 3 && strcmp(argv[2], "-") == 0) {
debug ("Skipping initrd\n");
len = data = 0;
}
else
#endif
if (argc >= 3) {
debug ("Not skipping initrd\n");
show_boot_progress (9);
addr = simple_strtoul(argv[2], NULL, 16);
printf ("## Loading RAMDisk Image at %08lx ...\n", addr);
hdr = (image_header_t *)addr;
if (!image_check_magic (hdr)) {
puts ("Bad Magic Number\n");
show_boot_progress (-10);
do_reset (cmdtp, flag, argc, argv);
}
if (!image_check_hcrc (hdr)) {
puts ("Bad Header Checksum\n");
show_boot_progress (-11);
do_reset (cmdtp, flag, argc, argv);
}
show_boot_progress (10);
print_image_hdr (hdr);
if (verify) {
puts (" Verifying Checksum ... ");
if (!image_check_dcrc_wd (hdr, CHUNKSZ)) {
puts ("Bad Data CRC\n");
show_boot_progress (-12);
do_reset (cmdtp, flag, argc, argv);
}
puts ("OK\n");
}
show_boot_progress (11);
if (!image_check_os (hdr, IH_OS_LINUX) ||
!image_check_arch (hdr, IH_ARCH_PPC) ||
!image_check_type (hdr, IH_TYPE_RAMDISK)) {
puts ("No Linux PPC Ramdisk Image\n");
show_boot_progress (-13);
do_reset (cmdtp, flag, argc, argv);
}
data = image_get_data (hdr);
len = image_get_data_size (hdr);
/*
* Now check if we have a multifile image
*/
} else if (image_check_type (hdr, IH_TYPE_MULTI) && (len_ptr[1])) {
u_long tail = image_to_cpu (len_ptr[0]) % 4;
int i;
show_boot_progress (13);
/* skip kernel length and terminator */
data = (ulong)(&len_ptr[2]);
/* skip any additional image length fields */
for (i=1; len_ptr[i]; ++i)
data += 4;
/* add kernel length, and align */
data += image_to_cpu (len_ptr[0]);
if (tail) {
data += 4 - tail;
}
len = image_to_cpu (len_ptr[1]);
} else {
/*
* no initrd image
*/
show_boot_progress (14);
len = data = 0;
}
#if defined(CONFIG_OF_FLAT_TREE) || defined(CONFIG_OF_LIBFDT)
if(argc > 3) {
of_flat_tree = (char *) simple_strtoul(argv[3], NULL, 16);
hdr = (image_header_t *)of_flat_tree;
#if defined(CONFIG_OF_FLAT_TREE)
if (*((ulong *)(of_flat_tree + image_get_header_size ())) != OF_DT_HEADER) {
#else
if (fdt_check_header (of_flat_tree + image_get_header_size ()) != 0) {
#endif
#ifndef CFG_NO_FLASH
if (addr2info((ulong)of_flat_tree) != NULL)
of_data = (ulong)of_flat_tree;
#endif
} else if (image_check_magic (hdr)) {
printf("## Flat Device Tree at %08lX\n", hdr);
print_image_hdr (hdr);
if ((image_get_load (hdr) < ((unsigned long)hdr + image_get_image_size (hdr))) &&
((image_get_load (hdr) + image_get_data_size (hdr)) > (unsigned long)hdr)) {
puts ("ERROR: fdt overwritten - "
"must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
puts (" Verifying Checksum ... ");
if (!image_check_hcrc (hdr)) {
puts ("ERROR: fdt header checksum invalid - "
"must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
if (!image_check_dcrc (hdr)) {
puts ("ERROR: fdt checksum invalid - "
"must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
puts ("OK\n");
if (!image_check_type (hdr, IH_TYPE_FLATDT)) {
puts ("ERROR: uImage is not a fdt - "
"must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
if (image_get_comp (hdr) != IH_COMP_NONE) {
puts ("ERROR: uImage is compressed - "
"must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
#if defined(CONFIG_OF_FLAT_TREE)
if (*((ulong *)(of_flat_tree + image_get_header_size ())) != OF_DT_HEADER) {
#else
if (fdt_check_header (of_flat_tree + image_get_header_size ()) != 0) {
#endif
puts ("ERROR: uImage data is not a fdt - "
"must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
memmove ((void *)image_get_load (hdr),
(void *)(of_flat_tree + image_get_header_size ()),
image_get_data_size (hdr));
of_flat_tree = (char *)image_get_load (hdr);
} else {
puts ("Did not find a flat Flat Device Tree.\n"
"Must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
printf (" Booting using the fdt at 0x%x\n",
of_flat_tree);
} else if (image_check_type (hdr, IH_TYPE_MULTI) && (len_ptr[1]) && (len_ptr[2])) {
u_long tail = image_to_cpu (len_ptr[0]) % 4;
int i;
/* skip kernel length, initrd length, and terminator */
of_flat_tree = (char *)(&len_ptr[3]);
/* skip any additional image length fields */
for (i=2; len_ptr[i]; ++i)
of_flat_tree += 4;
/* add kernel length, and align */
of_flat_tree += image_to_cpu (len_ptr[0]);
if (tail) {
of_flat_tree += 4 - tail;
}
/* add initrd length, and align */
tail = image_to_cpu (len_ptr[1]) % 4;
of_flat_tree += image_to_cpu (len_ptr[1]);
if (tail) {
of_flat_tree += 4 - tail;
}
#ifndef CFG_NO_FLASH
/* move the blob if it is in flash (set of_data to !null) */
if (addr2info ((ulong)of_flat_tree) != NULL)
of_data = (ulong)of_flat_tree;
#endif
#if defined(CONFIG_OF_FLAT_TREE)
if (*((ulong *)(of_flat_tree)) != OF_DT_HEADER) {
#else
if (fdt_check_header (of_flat_tree) != 0) {
#endif
puts ("ERROR: image is not a fdt - "
"must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
#if defined(CONFIG_OF_FLAT_TREE)
if (((struct boot_param_header *)of_flat_tree)->totalsize !=
image_to_cpu (len_ptr[2])) {
#else
if (be32_to_cpu (fdt_totalsize (of_flat_tree)) !=
image_to_cpu (len_ptr[2])) {
#endif
puts ("ERROR: fdt size != image size - "
"must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
}
#endif
if (!data) {
debug ("No initrd\n");
}
if (data) {
if (!initrd_copy_to_ram) { /* zero-copy ramdisk support */
initrd_start = data;
initrd_end = initrd_start + len;
} else {
initrd_start = (ulong)kbd - len;
initrd_start &= ~(4096 - 1); /* align on page */
if (initrd_high) {
ulong nsp;
/*
* the inital ramdisk does not need to be within
* CFG_BOOTMAPSZ as it is not accessed until after
* the mm system is initialised.
*
* do the stack bottom calculation again and see if
* the initrd will fit just below the monitor stack
* bottom without overwriting the area allocated
* above for command line args and board info.
*/
asm( "mr %0,1": "=r"(nsp) : );
nsp -= 2048; /* just to be sure */
nsp &= ~0xF;
if (nsp > initrd_high) /* limit as specified */
nsp = initrd_high;
nsp -= len;
nsp &= ~(4096 - 1); /* align on page */
if (nsp >= sp)
initrd_start = nsp;
}
show_boot_progress (12);
debug ("## initrd at 0x%08lX ... 0x%08lX (len=%ld=0x%lX)\n",
data, data + len - 1, len, len);
initrd_end = initrd_start + len;
printf (" Loading Ramdisk to %08lx, end %08lx ... ",
initrd_start, initrd_end);
#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
{
size_t l = len;
void *to = (void *)initrd_start;
void *from = (void *)data;
while (l > 0) {
size_t tail = (l > CHUNKSZ) ? CHUNKSZ : l;
WATCHDOG_RESET();
memmove (to, from, tail);
to += tail;
from += tail;
l -= tail;
}
}
#else /* !(CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG) */
memmove ((void *)initrd_start, (void *)data, len);
#endif /* CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG */
puts ("OK\n");
}
} else {
initrd_start = 0;
initrd_end = 0;
}
#if defined(CONFIG_OF_LIBFDT)
#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) {
int err;
ulong of_start, of_len;
of_len = be32_to_cpu(fdt_totalsize(of_data));
/* position on a 4K boundary before the kbd */
of_start = (ulong)kbd - of_len;
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);
err = fdt_open_into((void *)of_data, (void *)of_start, of_len);
if (err != 0) {
puts ("ERROR: fdt move failed - "
"must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
puts ("OK\n");
}
/*
* Add the chosen node if it doesn't exist, add the env and bd_t
* if the user wants it (the logic is in the subroutines).
*/
if (of_flat_tree) {
if (fdt_chosen(of_flat_tree, initrd_start, initrd_end, 0) < 0) {
puts ("ERROR: /chosen node create failed - "
"must RESET the board to recover.\n");
do_reset (cmdtp, flag, argc, argv);
}
#ifdef CONFIG_OF_HAS_UBOOT_ENV
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 */
}