[people/ms/u-boot.git] / common / image.c

/*
 * (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
 */

#ifndef USE_HOSTCC
#include <common.h>
#include <watchdog.h>

#ifdef CONFIG_SHOW_BOOT_PROGRESS
#include <status_led.h>
#endif

#ifdef CONFIG_HAS_DATAFLASH
#include <dataflash.h>
#endif

#ifdef CONFIG_LOGBUFFER
#include <logbuff.h>
#endif

#include <rtc.h>

#include <environment.h>
#include <image.h>

#if defined(CONFIG_FIT) || defined(CONFIG_OF_LIBFDT)
#include <libfdt.h>
#include <fdt_support.h>
#endif

#include <u-boot/md5.h>
#include <sha1.h>
#include <asm/errno.h>
#include <asm/io.h>

#ifdef CONFIG_CMD_BDI
extern int do_bdinfo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
#endif

DECLARE_GLOBAL_DATA_PTR;

static const image_header_t *image_get_ramdisk(ulong rd_addr, uint8_t arch,
                                                int verify);
#else
#include "mkimage.h"
#include <u-boot/md5.h>
#include <time.h>
#include <image.h>
#endif /* !USE_HOSTCC*/

#include <u-boot/crc.h>

#ifndef CONFIG_SYS_BARGSIZE
#define CONFIG_SYS_BARGSIZE 512
#endif

static const table_entry_t uimage_arch[] = {
        {       IH_ARCH_INVALID,        NULL,           "Invalid ARCH", },
        {       IH_ARCH_ALPHA,          "alpha",        "Alpha",        },
        {       IH_ARCH_ARM,            "arm",          "ARM",          },
        {       IH_ARCH_I386,           "x86",          "Intel x86",    },
        {       IH_ARCH_IA64,           "ia64",         "IA64",         },
        {       IH_ARCH_M68K,           "m68k",         "M68K",         },
        {       IH_ARCH_MICROBLAZE,     "microblaze",   "MicroBlaze",   },
        {       IH_ARCH_MIPS,           "mips",         "MIPS",         },
        {       IH_ARCH_MIPS64,         "mips64",       "MIPS 64 Bit",  },
        {       IH_ARCH_NIOS2,          "nios2",        "NIOS II",      },
        {       IH_ARCH_PPC,            "powerpc",      "PowerPC",      },
        {       IH_ARCH_PPC,            "ppc",          "PowerPC",      },
        {       IH_ARCH_S390,           "s390",         "IBM S390",     },
        {       IH_ARCH_SH,             "sh",           "SuperH",       },
        {       IH_ARCH_SPARC,          "sparc",        "SPARC",        },
        {       IH_ARCH_SPARC64,        "sparc64",      "SPARC 64 Bit", },
        {       IH_ARCH_BLACKFIN,       "blackfin",     "Blackfin",     },
        {       IH_ARCH_AVR32,          "avr32",        "AVR32",        },
        {       IH_ARCH_NDS32,          "nds32",        "NDS32",        },
        {       IH_ARCH_OPENRISC,       "or1k",         "OpenRISC 1000",},
        {       IH_ARCH_SANDBOX,        "sandbox",      "Sandbox",      },
        {       -1,                     "",             "",             },
};

static const table_entry_t uimage_os[] = {
        {       IH_OS_INVALID,  NULL,           "Invalid OS",           },
        {       IH_OS_LINUX,    "linux",        "Linux",                },
#if defined(CONFIG_LYNXKDI) || defined(USE_HOSTCC)
        {       IH_OS_LYNXOS,   "lynxos",       "LynxOS",               },
#endif
        {       IH_OS_NETBSD,   "netbsd",       "NetBSD",               },
        {       IH_OS_OSE,      "ose",          "Enea OSE",             },
        {       IH_OS_PLAN9,    "plan9",        "Plan 9",               },
        {       IH_OS_RTEMS,    "rtems",        "RTEMS",                },
        {       IH_OS_U_BOOT,   "u-boot",       "U-Boot",               },
#if defined(CONFIG_CMD_ELF) || defined(USE_HOSTCC)
        {       IH_OS_QNX,      "qnx",          "QNX",                  },
        {       IH_OS_VXWORKS,  "vxworks",      "VxWorks",              },
#endif
#if defined(CONFIG_INTEGRITY) || defined(USE_HOSTCC)
        {       IH_OS_INTEGRITY,"integrity",    "INTEGRITY",            },
#endif
#ifdef USE_HOSTCC
        {       IH_OS_4_4BSD,   "4_4bsd",       "4_4BSD",               },
        {       IH_OS_DELL,     "dell",         "Dell",                 },
        {       IH_OS_ESIX,     "esix",         "Esix",                 },
        {       IH_OS_FREEBSD,  "freebsd",      "FreeBSD",              },
        {       IH_OS_IRIX,     "irix",         "Irix",                 },
        {       IH_OS_NCR,      "ncr",          "NCR",                  },
        {       IH_OS_OPENBSD,  "openbsd",      "OpenBSD",              },
        {       IH_OS_PSOS,     "psos",         "pSOS",                 },
        {       IH_OS_SCO,      "sco",          "SCO",                  },
        {       IH_OS_SOLARIS,  "solaris",      "Solaris",              },
        {       IH_OS_SVR4,     "svr4",         "SVR4",                 },
#endif
        {       -1,             "",             "",                     },
};

static const table_entry_t uimage_type[] = {
        {       IH_TYPE_AISIMAGE,   "aisimage",   "Davinci AIS image",},
        {       IH_TYPE_FILESYSTEM, "filesystem", "Filesystem Image",   },
        {       IH_TYPE_FIRMWARE,   "firmware",   "Firmware",           },
        {       IH_TYPE_FLATDT,     "flat_dt",    "Flat Device Tree",   },
        {       IH_TYPE_KERNEL,     "kernel",     "Kernel Image",       },
        {       IH_TYPE_KERNEL_NOLOAD, "kernel_noload",  "Kernel Image (no loading done)", },
        {       IH_TYPE_KWBIMAGE,   "kwbimage",   "Kirkwood Boot Image",},
        {       IH_TYPE_IMXIMAGE,   "imximage",   "Freescale i.MX Boot Image",},
        {       IH_TYPE_INVALID,    NULL,         "Invalid Image",      },
        {       IH_TYPE_MULTI,      "multi",      "Multi-File Image",   },
        {       IH_TYPE_OMAPIMAGE,  "omapimage",  "TI OMAP SPL With GP CH",},
        {       IH_TYPE_PBLIMAGE,   "pblimage",   "Freescale PBL Boot Image",},
        {       IH_TYPE_RAMDISK,    "ramdisk",    "RAMDisk Image",      },
        {       IH_TYPE_SCRIPT,     "script",     "Script",             },
        {       IH_TYPE_STANDALONE, "standalone", "Standalone Program", },
        {       IH_TYPE_UBLIMAGE,   "ublimage",   "Davinci UBL image",},
        {       -1,                 "",           "",                   },
};

static const table_entry_t uimage_comp[] = {
        {       IH_COMP_NONE,   "none",         "uncompressed",         },
        {       IH_COMP_BZIP2,  "bzip2",        "bzip2 compressed",     },
        {       IH_COMP_GZIP,   "gzip",         "gzip compressed",      },
        {       IH_COMP_LZMA,   "lzma",         "lzma compressed",      },
        {       IH_COMP_LZO,    "lzo",          "lzo compressed",       },
        {       -1,             "",             "",                     },
};

/*****************************************************************************/
/* Legacy format routines */
/*****************************************************************************/
int image_check_hcrc(const image_header_t *hdr)
{
        ulong hcrc;
        ulong len = image_get_header_size();
        image_header_t header;

        /* Copy header so we can blank CRC field for re-calculation */
        memmove(&header, (char *)hdr, image_get_header_size());
        image_set_hcrc(&header, 0);

        hcrc = crc32(0, (unsigned char *)&header, len);

        return (hcrc == image_get_hcrc(hdr));
}

int image_check_dcrc(const image_header_t *hdr)
{
        ulong data = image_get_data(hdr);
        ulong len = image_get_data_size(hdr);
        ulong dcrc = crc32_wd(0, (unsigned char *)data, len, CHUNKSZ_CRC32);

        return (dcrc == image_get_dcrc(hdr));
}

/**
 * image_multi_count - get component (sub-image) count
 * @hdr: pointer to the header of the multi component image
 *
 * image_multi_count() returns number of components in a multi
 * component image.
 *
 * Note: no checking of the image type is done, caller must pass
 * a valid multi component image.
 *
 * returns:
 *     number of components
 */
ulong image_multi_count(const image_header_t *hdr)
{
        ulong i, count = 0;
        uint32_t *size;

        /* get start of the image payload, which in case of multi
         * component images that points to a table of component sizes */
        size = (uint32_t *)image_get_data(hdr);

        /* count non empty slots */
        for (i = 0; size[i]; ++i)
                count++;

        return count;
}

/**
 * image_multi_getimg - get component data address and size
 * @hdr: pointer to the header of the multi component image
 * @idx: index of the requested component
 * @data: pointer to a ulong variable, will hold component data address
 * @len: pointer to a ulong variable, will hold component size
 *
 * image_multi_getimg() returns size and data address for the requested
 * component in a multi component image.
 *
 * Note: no checking of the image type is done, caller must pass
 * a valid multi component image.
 *
 * returns:
 *     data address and size of the component, if idx is valid
 *     0 in data and len, if idx is out of range
 */
void image_multi_getimg(const image_header_t *hdr, ulong idx,
                        ulong *data, ulong *len)
{
        int i;
        uint32_t *size;
        ulong offset, count, img_data;

        /* get number of component */
        count = image_multi_count(hdr);

        /* get start of the image payload, which in case of multi
         * component images that points to a table of component sizes */
        size = (uint32_t *)image_get_data(hdr);

        /* get address of the proper component data start, which means
         * skipping sizes table (add 1 for last, null entry) */
        img_data = image_get_data(hdr) + (count + 1) * sizeof(uint32_t);

        if (idx < count) {
                *len = uimage_to_cpu(size[idx]);
                offset = 0;

                /* go over all indices preceding requested component idx */
                for (i = 0; i < idx; i++) {
                        /* add up i-th component size, rounding up to 4 bytes */
                        offset += (uimage_to_cpu(size[i]) + 3) & ~3 ;
                }

                /* calculate idx-th component data address */
                *data = img_data + offset;
        } else {
                *len = 0;
                *data = 0;
        }
}

static void image_print_type(const image_header_t *hdr)
{
        const char *os, *arch, *type, *comp;

        os = genimg_get_os_name(image_get_os(hdr));
        arch = genimg_get_arch_name(image_get_arch(hdr));
        type = genimg_get_type_name(image_get_type(hdr));
        comp = genimg_get_comp_name(image_get_comp(hdr));

        printf("%s %s %s (%s)\n", arch, os, type, comp);
}

/**
 * image_print_contents - prints out the contents of the legacy format image
 * @ptr: pointer to the legacy format image header
 * @p: pointer to prefix string
 *
 * image_print_contents() formats a multi line legacy image contents description.
 * The routine prints out all header fields followed by the size/offset data
 * for MULTI/SCRIPT images.
 *
 * returns:
 *     no returned results
 */
void image_print_contents(const void *ptr)
{
        const image_header_t *hdr = (const image_header_t *)ptr;
        const char *p;

        p = IMAGE_INDENT_STRING;
        printf("%sImage Name:   %.*s\n", p, IH_NMLEN, image_get_name(hdr));
        if (IMAGE_ENABLE_TIMESTAMP) {
                printf("%sCreated:      ", p);
                genimg_print_time((time_t)image_get_time(hdr));
        }
        printf("%sImage Type:   ", p);
        image_print_type(hdr);
        printf("%sData Size:    ", p);
        genimg_print_size(image_get_data_size(hdr));
        printf("%sLoad Address: %08x\n", p, image_get_load(hdr));
        printf("%sEntry Point:  %08x\n", p, image_get_ep(hdr));

        if (image_check_type(hdr, IH_TYPE_MULTI) ||
                        image_check_type(hdr, IH_TYPE_SCRIPT)) {
                int i;
                ulong data, len;
                ulong count = image_multi_count(hdr);

                printf("%sContents:\n", p);
                for (i = 0; i < count; i++) {
                        image_multi_getimg(hdr, i, &data, &len);

                        printf("%s   Image %d: ", p, i);
                        genimg_print_size(len);

                        if (image_check_type(hdr, IH_TYPE_SCRIPT) && i > 0) {
                                /*
                                 * the user may need to know offsets
                                 * if planning to do something with
                                 * multiple files
                                 */
                                printf("%s    Offset = 0x%08lx\n", p, data);
                        }
                }
        }
}


#ifndef USE_HOSTCC
/**
 * image_get_ramdisk - get and verify ramdisk image
 * @rd_addr: ramdisk image start address
 * @arch: expected ramdisk architecture
 * @verify: checksum verification flag
 *
 * image_get_ramdisk() returns a pointer to the verified ramdisk image
 * header. Routine receives image start address and expected architecture
 * flag. Verification done covers data and header integrity and os/type/arch
 * fields checking.
 *
 * If dataflash support is enabled routine checks for dataflash addresses
 * and handles required dataflash reads.
 *
 * returns:
 *     pointer to a ramdisk image header, if image was found and valid
 *     otherwise, return NULL
 */
static const image_header_t *image_get_ramdisk(ulong rd_addr, uint8_t arch,
                                                int verify)
{
        const image_header_t *rd_hdr = (const image_header_t *)rd_addr;

        if (!image_check_magic(rd_hdr)) {
                puts("Bad Magic Number\n");
                bootstage_error(BOOTSTAGE_ID_RD_MAGIC);
                return NULL;
        }

        if (!image_check_hcrc(rd_hdr)) {
                puts("Bad Header Checksum\n");
                bootstage_error(BOOTSTAGE_ID_RD_HDR_CHECKSUM);
                return NULL;
        }

        bootstage_mark(BOOTSTAGE_ID_RD_MAGIC);
        image_print_contents(rd_hdr);

        if (verify) {
                puts("   Verifying Checksum ... ");
                if (!image_check_dcrc(rd_hdr)) {
                        puts("Bad Data CRC\n");
                        bootstage_error(BOOTSTAGE_ID_RD_CHECKSUM);
                        return NULL;
                }
                puts("OK\n");
        }

        bootstage_mark(BOOTSTAGE_ID_RD_HDR_CHECKSUM);

        if (!image_check_os(rd_hdr, IH_OS_LINUX) ||
            !image_check_arch(rd_hdr, arch) ||
            !image_check_type(rd_hdr, IH_TYPE_RAMDISK)) {
                printf("No Linux %s Ramdisk Image\n",
                                genimg_get_arch_name(arch));
                bootstage_error(BOOTSTAGE_ID_RAMDISK);
                return NULL;
        }

        return rd_hdr;
}
#endif /* !USE_HOSTCC */

/*****************************************************************************/
/* Shared dual-format routines */
/*****************************************************************************/
#ifndef USE_HOSTCC
ulong load_addr = CONFIG_SYS_LOAD_ADDR; /* Default Load Address */
ulong save_addr;                        /* Default Save Address */
ulong save_size;                        /* Default Save Size (in bytes) */

static int on_loadaddr(const char *name, const char *value, enum env_op op,
        int flags)
{
        switch (op) {
        case env_op_create:
        case env_op_overwrite:
                load_addr = simple_strtoul(value, NULL, 16);
                break;
        default:
                break;
        }

        return 0;
}
U_BOOT_ENV_CALLBACK(loadaddr, on_loadaddr);

ulong getenv_bootm_low(void)
{
        char *s = getenv("bootm_low");
        if (s) {
                ulong tmp = simple_strtoul(s, NULL, 16);
                return tmp;
        }

#if defined(CONFIG_SYS_SDRAM_BASE)
        return CONFIG_SYS_SDRAM_BASE;
#elif defined(CONFIG_ARM)
        return gd->bd->bi_dram[0].start;
#else
        return 0;
#endif
}

phys_size_t getenv_bootm_size(void)
{
        phys_size_t tmp;
        char *s = getenv("bootm_size");
        if (s) {
                tmp = (phys_size_t)simple_strtoull(s, NULL, 16);
                return tmp;
        }
        s = getenv("bootm_low");
        if (s)
                tmp = (phys_size_t)simple_strtoull(s, NULL, 16);
        else
                tmp = 0;


#if defined(CONFIG_ARM)
        return gd->bd->bi_dram[0].size - tmp;
#else
        return gd->bd->bi_memsize - tmp;
#endif
}

phys_size_t getenv_bootm_mapsize(void)
{
        phys_size_t tmp;
        char *s = getenv("bootm_mapsize");
        if (s) {
                tmp = (phys_size_t)simple_strtoull(s, NULL, 16);
                return tmp;
        }

#if defined(CONFIG_SYS_BOOTMAPSZ)
        return CONFIG_SYS_BOOTMAPSZ;
#else
        return getenv_bootm_size();
#endif
}

void memmove_wd(void *to, void *from, size_t len, ulong chunksz)
{
        if (to == from)
                return;

#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
        while (len > 0) {
                size_t tail = (len > chunksz) ? chunksz : len;
                WATCHDOG_RESET();
                memmove(to, from, tail);
                to += tail;
                from += tail;
                len -= tail;
        }
#else   /* !(CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG) */
        memmove(to, from, len);
#endif  /* CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG */
}
#endif /* !USE_HOSTCC */

void genimg_print_size(uint32_t size)
{
#ifndef USE_HOSTCC
        printf("%d Bytes = ", size);
        print_size(size, "\n");
#else
        printf("%d Bytes = %.2f kB = %.2f MB\n",
                        size, (double)size / 1.024e3,
                        (double)size / 1.048576e6);
#endif
}

#if IMAGE_ENABLE_TIMESTAMP
void genimg_print_time(time_t timestamp)
{
#ifndef USE_HOSTCC
        struct rtc_time tm;

        to_tm(timestamp, &tm);
        printf("%4d-%02d-%02d  %2d:%02d:%02d UTC\n",
                        tm.tm_year, tm.tm_mon, tm.tm_mday,
                        tm.tm_hour, tm.tm_min, tm.tm_sec);
#else
        printf("%s", ctime(&timestamp));
#endif
}
#endif

/**
 * get_table_entry_name - translate entry id to long name
 * @table: pointer to a translation table for entries of a specific type
 * @msg: message to be returned when translation fails
 * @id: entry id to be translated
 *
 * get_table_entry_name() will go over translation table trying to find
 * entry that matches given id. If matching entry is found, its long
 * name is returned to the caller.
 *
 * returns:
 *     long entry name if translation succeeds
 *     msg otherwise
 */
char *get_table_entry_name(const table_entry_t *table, char *msg, int id)
{
        for (; table->id >= 0; ++table) {
                if (table->id == id)
#if defined(USE_HOSTCC) || !defined(CONFIG_NEEDS_MANUAL_RELOC)
                        return table->lname;
#else
                        return table->lname + gd->reloc_off;
#endif
        }
        return (msg);
}

const char *genimg_get_os_name(uint8_t os)
{
        return (get_table_entry_name(uimage_os, "Unknown OS", os));
}

const char *genimg_get_arch_name(uint8_t arch)
{
        return (get_table_entry_name(uimage_arch, "Unknown Architecture",
                                        arch));
}

const char *genimg_get_type_name(uint8_t type)
{
        return (get_table_entry_name(uimage_type, "Unknown Image", type));
}

const char *genimg_get_comp_name(uint8_t comp)
{
        return (get_table_entry_name(uimage_comp, "Unknown Compression",
                                        comp));
}

/**
 * get_table_entry_id - translate short entry name to id
 * @table: pointer to a translation table for entries of a specific type
 * @table_name: to be used in case of error
 * @name: entry short name to be translated
 *
 * get_table_entry_id() will go over translation table trying to find
 * entry that matches given short name. If matching entry is found,
 * its id returned to the caller.
 *
 * returns:
 *     entry id if translation succeeds
 *     -1 otherwise
 */
int get_table_entry_id(const table_entry_t *table,
                const char *table_name, const char *name)
{
        const table_entry_t *t;
#ifdef USE_HOSTCC
        int first = 1;

        for (t = table; t->id >= 0; ++t) {
                if (t->sname && strcasecmp(t->sname, name) == 0)
                        return(t->id);
        }

        fprintf(stderr, "\nInvalid %s Type - valid names are", table_name);
        for (t = table; t->id >= 0; ++t) {
                if (t->sname == NULL)
                        continue;
                fprintf(stderr, "%c %s", (first) ? ':' : ',', t->sname);
                first = 0;
        }
        fprintf(stderr, "\n");
#else
        for (t = table; t->id >= 0; ++t) {
#ifdef CONFIG_NEEDS_MANUAL_RELOC
                if (t->sname && strcmp(t->sname + gd->reloc_off, name) == 0)
#else
                if (t->sname && strcmp(t->sname, name) == 0)
#endif
                        return (t->id);
        }
        debug("Invalid %s Type: %s\n", table_name, name);
#endif /* USE_HOSTCC */
        return (-1);
}

int genimg_get_os_id(const char *name)
{
        return (get_table_entry_id(uimage_os, "OS", name));
}

int genimg_get_arch_id(const char *name)
{
        return (get_table_entry_id(uimage_arch, "CPU", name));
}

int genimg_get_type_id(const char *name)
{
        return (get_table_entry_id(uimage_type, "Image", name));
}

int genimg_get_comp_id(const char *name)
{
        return (get_table_entry_id(uimage_comp, "Compression", name));
}

#ifndef USE_HOSTCC
/**
 * genimg_get_format - get image format type
 * @img_addr: image start address
 *
 * genimg_get_format() checks whether provided address points to a valid
 * legacy or FIT image.
 *
 * New uImage format and FDT blob are based on a libfdt. FDT blob
 * may be passed directly or embedded in a FIT image. In both situations
 * genimg_get_format() must be able to dectect libfdt header.
 *
 * returns:
 *     image format type or IMAGE_FORMAT_INVALID if no image is present
 */
int genimg_get_format(const void *img_addr)
{
        ulong format = IMAGE_FORMAT_INVALID;
        const image_header_t *hdr;
#if defined(CONFIG_FIT) || defined(CONFIG_OF_LIBFDT)
        char *fit_hdr;
#endif

        hdr = (const image_header_t *)img_addr;
        if (image_check_magic(hdr))
                format = IMAGE_FORMAT_LEGACY;
#if defined(CONFIG_FIT) || defined(CONFIG_OF_LIBFDT)
        else {
                fit_hdr = (char *)img_addr;
                if (fdt_check_header(fit_hdr) == 0)
                        format = IMAGE_FORMAT_FIT;
        }
#endif

        return format;
}

/**
 * genimg_get_image - get image from special storage (if necessary)
 * @img_addr: image start address
 *
 * genimg_get_image() checks if provided image start adddress is located
 * in a dataflash storage. If so, image is moved to a system RAM memory.
 *
 * returns:
 *     image start address after possible relocation from special storage
 */
ulong genimg_get_image(ulong img_addr)
{
        ulong ram_addr = img_addr;

#ifdef CONFIG_HAS_DATAFLASH
        ulong h_size, d_size;

        if (addr_dataflash(img_addr)) {
                void *buf;

                /* ger RAM address */
                ram_addr = CONFIG_SYS_LOAD_ADDR;

                /* get header size */
                h_size = image_get_header_size();
#if defined(CONFIG_FIT)
                if (sizeof(struct fdt_header) > h_size)
                        h_size = sizeof(struct fdt_header);
#endif

                /* read in header */
                debug("   Reading image header from dataflash address "
                        "%08lx to RAM address %08lx\n", img_addr, ram_addr);

                buf = map_sysmem(ram_addr, 0);
                read_dataflash(img_addr, h_size, buf);

                /* get data size */
                switch (genimg_get_format(buf)) {
                case IMAGE_FORMAT_LEGACY:
                        d_size = image_get_data_size(buf);
                        debug("   Legacy format image found at 0x%08lx, "
                                        "size 0x%08lx\n",
                                        ram_addr, d_size);
                        break;
#if defined(CONFIG_FIT)
                case IMAGE_FORMAT_FIT:
                        d_size = fit_get_size(buf) - h_size;
                        debug("   FIT/FDT format image found at 0x%08lx, "
                                        "size 0x%08lx\n",
                                        ram_addr, d_size);
                        break;
#endif
                default:
                        printf("   No valid image found at 0x%08lx\n",
                                img_addr);
                        return ram_addr;
                }

                /* read in image data */
                debug("   Reading image remaining data from dataflash address "
                        "%08lx to RAM address %08lx\n", img_addr + h_size,
                        ram_addr + h_size);

                read_dataflash(img_addr + h_size, d_size,
                                (char *)(buf + h_size));

        }
#endif /* CONFIG_HAS_DATAFLASH */

        return ram_addr;
}

/**
 * fit_has_config - check if there is a valid FIT configuration
 * @images: pointer to the bootm command headers structure
 *
 * fit_has_config() checks if there is a FIT configuration in use
 * (if FTI support is present).
 *
 * returns:
 *     0, no FIT support or no configuration found
 *     1, configuration found
 */
int genimg_has_config(bootm_headers_t *images)
{
#if defined(CONFIG_FIT)
        if (images->fit_uname_cfg)
                return 1;
#endif
        return 0;
}

/**
 * boot_get_ramdisk - main ramdisk handling routine
 * @argc: command argument count
 * @argv: command argument list
 * @images: pointer to the bootm images structure
 * @arch: expected ramdisk architecture
 * @rd_start: pointer to a ulong variable, will hold ramdisk start address
 * @rd_end: pointer to a ulong variable, will hold ramdisk end
 *
 * boot_get_ramdisk() is responsible for finding a valid ramdisk image.
 * Curently supported are the following ramdisk sources:
 *      - multicomponent kernel/ramdisk image,
 *      - commandline provided address of decicated ramdisk image.
 *
 * returns:
 *     0, if ramdisk image was found and valid, or skiped
 *     rd_start and rd_end are set to ramdisk start/end addresses if
 *     ramdisk image is found and valid
 *
 *     1, if ramdisk image is found but corrupted, or invalid
 *     rd_start and rd_end are set to 0 if no ramdisk exists
 */
int boot_get_ramdisk(int argc, char * const argv[], bootm_headers_t *images,
                uint8_t arch, ulong *rd_start, ulong *rd_end)
{
        ulong rd_addr, rd_load;
        ulong rd_data, rd_len;
        const image_header_t *rd_hdr;
        void *buf;
#ifdef CONFIG_SUPPORT_RAW_INITRD
        char *end;
#endif
#if defined(CONFIG_FIT)
        const char      *fit_uname_config = images->fit_uname_cfg;
        const char      *fit_uname_ramdisk = NULL;
        ulong           default_addr;
        int             rd_noffset;
#endif
        const char *select = NULL;

        *rd_start = 0;
        *rd_end = 0;

        if (argc >= 2)
                select = argv[1];
        /*
         * Look for a '-' which indicates to ignore the
         * ramdisk argument
         */
        if (select && strcmp(select, "-") ==  0) {
                debug("## Skipping init Ramdisk\n");
                rd_len = rd_data = 0;
        } else if (select || genimg_has_config(images)) {
#if defined(CONFIG_FIT)
                if (select) {
                        /*
                         * If the init ramdisk comes from the FIT image and
                         * the FIT image address is omitted in the command
                         * line argument, try to use os FIT image address or
                         * default load address.
                         */
                        if (images->fit_uname_os)
                                default_addr = (ulong)images->fit_hdr_os;
                        else
                                default_addr = load_addr;

                        if (fit_parse_conf(select, default_addr,
                                           &rd_addr, &fit_uname_config)) {
                                debug("*  ramdisk: config '%s' from image at "
                                                "0x%08lx\n",
                                                fit_uname_config, rd_addr);
                        } else if (fit_parse_subimage(select, default_addr,
                                                &rd_addr, &fit_uname_ramdisk)) {
                                debug("*  ramdisk: subimage '%s' from image at "
                                                "0x%08lx\n",
                                                fit_uname_ramdisk, rd_addr);
                        } else
#endif
                        {
                                rd_addr = simple_strtoul(select, NULL, 16);
                                debug("*  ramdisk: cmdline image address = "
                                                "0x%08lx\n",
                                                rd_addr);
                        }
#if defined(CONFIG_FIT)
                } else {
                        /* use FIT configuration provided in first bootm
                         * command argument. If the property is not defined,
                         * quit silently.
                         */
                        rd_addr = map_to_sysmem(images->fit_hdr_os);
                        rd_noffset = fit_get_node_from_config(images,
                                        FIT_RAMDISK_PROP, rd_addr);
                        if (rd_noffset == -ENOLINK)
                                return 0;
                        else if (rd_noffset < 0)
                                return 1;
                }
#endif

                /* copy from dataflash if needed */
                rd_addr = genimg_get_image(rd_addr);

                /*
                 * Check if there is an initrd image at the
                 * address provided in the second bootm argument
                 * check image type, for FIT images get FIT node.
                 */
                buf = map_sysmem(rd_addr, 0);
                switch (genimg_get_format(buf)) {
                case IMAGE_FORMAT_LEGACY:
                        printf("## Loading init Ramdisk from Legacy "
                                        "Image at %08lx ...\n", rd_addr);

                        bootstage_mark(BOOTSTAGE_ID_CHECK_RAMDISK);
                        rd_hdr = image_get_ramdisk(rd_addr, arch,
                                                        images->verify);

                        if (rd_hdr == NULL)
                                return 1;

                        rd_data = image_get_data(rd_hdr);
                        rd_len = image_get_data_size(rd_hdr);
                        rd_load = image_get_load(rd_hdr);
                        break;
#if defined(CONFIG_FIT)
                case IMAGE_FORMAT_FIT:
                        rd_noffset = fit_image_load(images, FIT_RAMDISK_PROP,
                                        rd_addr, &fit_uname_ramdisk,
                                        &fit_uname_config, arch,
                                        IH_TYPE_RAMDISK,
                                        BOOTSTAGE_ID_FIT_RD_START,
                                        FIT_LOAD_REQUIRED, &rd_data, &rd_len);
                        if (rd_noffset < 0)
                                return 1;

                        images->fit_hdr_rd = map_sysmem(rd_addr, 0);
                        images->fit_uname_rd = fit_uname_ramdisk;
                        images->fit_noffset_rd = rd_noffset;
                        break;
#endif
                default:
#ifdef CONFIG_SUPPORT_RAW_INITRD
                        end = NULL;
                        if (select)
                                end = strchr(select, ':');
                        if (end) {
                                rd_len = simple_strtoul(++end, NULL, 16);
                                rd_data = rd_addr;
                        } else
#endif
                        {
                                puts("Wrong Ramdisk Image Format\n");
                                rd_data = rd_len = rd_load = 0;
                                return 1;
                        }
                }
        } else if (images->legacy_hdr_valid &&
                        image_check_type(&images->legacy_hdr_os_copy,
                                                IH_TYPE_MULTI)) {

                /*
                 * Now check if we have a legacy mult-component image,
                 * get second entry data start address and len.
                 */
                bootstage_mark(BOOTSTAGE_ID_RAMDISK);
                printf("## Loading init Ramdisk from multi component "
                                "Legacy Image at %08lx ...\n",
                                (ulong)images->legacy_hdr_os);

                image_multi_getimg(images->legacy_hdr_os, 1, &rd_data, &rd_len);
        } else {
                /*
                 * no initrd image
                 */
                bootstage_mark(BOOTSTAGE_ID_NO_RAMDISK);
                rd_len = rd_data = 0;
        }

        if (!rd_data) {
                debug("## No init Ramdisk\n");
        } else {
                *rd_start = rd_data;
                *rd_end = rd_data + rd_len;
        }
        debug("   ramdisk start = 0x%08lx, ramdisk end = 0x%08lx\n",
                        *rd_start, *rd_end);

        return 0;
}

#ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
/**
 * boot_ramdisk_high - relocate init ramdisk
 * @lmb: pointer to lmb handle, will be used for memory mgmt
 * @rd_data: ramdisk data start address
 * @rd_len: ramdisk data length
 * @initrd_start: pointer to a ulong variable, will hold final init ramdisk
 *      start address (after possible relocation)
 * @initrd_end: pointer to a ulong variable, will hold final init ramdisk
 *      end address (after possible relocation)
 *
 * boot_ramdisk_high() takes a relocation hint from "initrd_high" environement
 * variable and if requested ramdisk data is moved to a specified location.
 *
 * Initrd_start and initrd_end are set to final (after relocation) ramdisk
 * start/end addresses if ramdisk image start and len were provided,
 * otherwise set initrd_start and initrd_end set to zeros.
 *
 * returns:
 *      0 - success
 *     -1 - failure
 */
int boot_ramdisk_high(struct lmb *lmb, ulong rd_data, ulong rd_len,
                  ulong *initrd_start, ulong *initrd_end)
{
        char    *s;
        ulong   initrd_high;
        int     initrd_copy_to_ram = 1;

        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
        /* Prevent initrd from overwriting logbuffer */
        lmb_reserve(lmb, logbuffer_base() - LOGBUFF_OVERHEAD, LOGBUFF_RESERVE);
#endif

        debug("## initrd_high = 0x%08lx, copy_to_ram = %d\n",
                        initrd_high, initrd_copy_to_ram);

        if (rd_data) {
                if (!initrd_copy_to_ram) {      /* zero-copy ramdisk support */
                        debug("   in-place initrd\n");
                        *initrd_start = rd_data;
                        *initrd_end = rd_data + rd_len;
                        lmb_reserve(lmb, rd_data, rd_len);
                } else {
                        if (initrd_high)
                                *initrd_start = (ulong)lmb_alloc_base(lmb,
                                                rd_len, 0x1000, initrd_high);
                        else
                                *initrd_start = (ulong)lmb_alloc(lmb, rd_len,
                                                                 0x1000);

                        if (*initrd_start == 0) {
                                puts("ramdisk - allocation error\n");
                                goto error;
                        }
                        bootstage_mark(BOOTSTAGE_ID_COPY_RAMDISK);

                        *initrd_end = *initrd_start + rd_len;
                        printf("   Loading Ramdisk to %08lx, end %08lx ... ",
                                        *initrd_start, *initrd_end);

                        memmove_wd((void *)*initrd_start,
                                        (void *)rd_data, rd_len, CHUNKSZ);

#ifdef CONFIG_MP
                        /*
                         * Ensure the image is flushed to memory to handle
                         * AMP boot scenarios in which we might not be
                         * HW cache coherent
                         */
                        flush_cache((unsigned long)*initrd_start, rd_len);
#endif
                        puts("OK\n");
                }
        } else {
                *initrd_start = 0;
                *initrd_end = 0;
        }
        debug("   ramdisk load start = 0x%08lx, ramdisk load end = 0x%08lx\n",
                        *initrd_start, *initrd_end);

        return 0;

error:
        return -1;
}
#endif /* CONFIG_SYS_BOOT_RAMDISK_HIGH */

#ifdef CONFIG_SYS_BOOT_GET_CMDLINE
/**
 * boot_get_cmdline - allocate and initialize kernel cmdline
 * @lmb: pointer to lmb handle, will be used for memory mgmt
 * @cmd_start: pointer to a ulong variable, will hold cmdline start
 * @cmd_end: pointer to a ulong variable, will hold cmdline end
 *
 * boot_get_cmdline() allocates space for kernel command line below
 * BOOTMAPSZ + getenv_bootm_low() address. If "bootargs" U-boot environemnt
 * variable is present its contents is copied to allocated kernel
 * command line.
 *
 * returns:
 *      0 - success
 *     -1 - failure
 */
int boot_get_cmdline(struct lmb *lmb, ulong *cmd_start, ulong *cmd_end)
{
        char *cmdline;
        char *s;

        cmdline = (char *)(ulong)lmb_alloc_base(lmb, CONFIG_SYS_BARGSIZE, 0xf,
                                getenv_bootm_mapsize() + getenv_bootm_low());

        if (cmdline == NULL)
                return -1;

        if ((s = getenv("bootargs")) == NULL)
                s = "";

        strcpy(cmdline, s);

        *cmd_start = (ulong) & cmdline[0];
        *cmd_end = *cmd_start + strlen(cmdline);

        debug("## cmdline at 0x%08lx ... 0x%08lx\n", *cmd_start, *cmd_end);

        return 0;
}
#endif /* CONFIG_SYS_BOOT_GET_CMDLINE */

#ifdef CONFIG_SYS_BOOT_GET_KBD
/**
 * boot_get_kbd - allocate and initialize kernel copy of board info
 * @lmb: pointer to lmb handle, will be used for memory mgmt
 * @kbd: double pointer to board info data
 *
 * boot_get_kbd() allocates space for kernel copy of board info data below
 * BOOTMAPSZ + getenv_bootm_low() address and kernel board info is initialized
 * with the current u-boot board info data.
 *
 * returns:
 *      0 - success
 *     -1 - failure
 */
int boot_get_kbd(struct lmb *lmb, bd_t **kbd)
{
        *kbd = (bd_t *)(ulong)lmb_alloc_base(lmb, sizeof(bd_t), 0xf,
                                getenv_bootm_mapsize() + getenv_bootm_low());
        if (*kbd == NULL)
                return -1;

        **kbd = *(gd->bd);

        debug("## kernel board info at 0x%08lx\n", (ulong)*kbd);

#if defined(DEBUG) && defined(CONFIG_CMD_BDI)
        do_bdinfo(NULL, 0, 0, NULL);
#endif

        return 0;
}
#endif /* CONFIG_SYS_BOOT_GET_KBD */

#ifdef CONFIG_LMB
int image_setup_linux(bootm_headers_t *images)
{
        ulong of_size = images->ft_len;
        char **of_flat_tree = &images->ft_addr;
        ulong *initrd_start = &images->initrd_start;
        ulong *initrd_end = &images->initrd_end;
        struct lmb *lmb = &images->lmb;
        ulong rd_len;
        int ret;

        if (IMAGE_ENABLE_OF_LIBFDT)
                boot_fdt_add_mem_rsv_regions(lmb, *of_flat_tree);

        if (IMAGE_BOOT_GET_CMDLINE) {
                ret = boot_get_cmdline(lmb, &images->cmdline_start,
                                &images->cmdline_end);
                if (ret) {
                        puts("ERROR with allocation of cmdline\n");
                        return ret;
                }
        }
        if (IMAGE_ENABLE_RAMDISK_HIGH) {
                rd_len = images->rd_end - images->rd_start;
                ret = boot_ramdisk_high(lmb, images->rd_start, rd_len,
                                initrd_start, initrd_end);
                if (ret)
                        return ret;
        }

        if (IMAGE_ENABLE_OF_LIBFDT) {
                ret = boot_relocate_fdt(lmb, of_flat_tree, &of_size);
                if (ret)
                        return ret;
        }

        if (IMAGE_ENABLE_OF_LIBFDT && of_size) {
                ret = image_setup_libfdt(images, *of_flat_tree, of_size, lmb);
                if (ret)
                        return ret;
        }

        return 0;
}
#endif /* CONFIG_LMB */
#endif /* !USE_HOSTCC */