coreboot July 2011

coreboot@coreboot.org

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244 discussions

[ANN]FILO and SerialICE now managed by gerrit
by Patrick Georgi 23 Jul '11

23 Jul '11

Hi all, I moved FILO and SerialICE to gerrit, after we used it for a while for coreboot with good success at managing incoming contributions. The SVN repositories are read-only now. For instructions on how to access the repositories or to submit changes, see http://www.coreboot.org/Git The server remains the same, but of course the repository URLs change: FILO: ssh://<username>@review.coreboot.org:29418/filo http://[<username>:<password>@]review.coreboot.org/p/filo.git http://review.coreboot.org/gitweb?p=filo.git SerialICE: ssh://<username>@review.coreboot.org:29418/serialice http://[<username>:<password>@]review.coreboot.org/p/serialice.git http://review.coreboot.org/gitweb?p=serialice.git Regards, Patrick Georgi

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Military/Industrial Embedded market and coreboot
by Антон Кочков 23 Jul '11

23 Jul '11

Good day! Anyone hear about VME and VMEbus? That was common standard for military, industrial and aerospace applications And that was standard without x86. In the early 2000 VITA group announced new successor of VME - OpenVPX ( http://en.wikipedia.org/wiki/VPX ) And now, VPX computers market full of x86 platforms. I think coreboot in this market can bring more advantages for customer, than in desktop/claster pc. And no one on the market hear/wonder about coreboot. I think at least they need to know about. There many magazines, conferences. What if write article or go to some exhibition/conference? See links: Submit article: http://opensystemsmedia.com/submit/news (for magazines http://www.mil-embedded.com/ and http://industrial-embedded.com/ ) Exhibitions, like MILCOM: (http://www.milcom.com) - biggest conference in the world, for military IT. and a lot of other. Best regards, Anton Kochkov.

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Patch merged into master: 45df6e2 Add xhcbios and ahcibios rom handling
by gerrit＠coreboot.org 22 Jul '11

22 Jul '11

the following patch was just integrated into master: commit 45df6e248dd83ecb5b6198dc94d2b88056ac3612 Author: efdesign98 <efdesign98(a)gmail.com> Date: Wed Jul 20 19:59:22 2011 -0600 Add xhcbios and ahcibios rom handling This change adds xhci and ahci bios rom handling that is similar to the vgabios rom handling in the arch/x86 Makefile.inc to the Persimmon and Torpedo mainboards. It also adds the basis for AHCI BIOS rom handling to the Persimmon Kconfig. Change-Id: I527a906323ae483cfa2ca0785f3adb43e88fd84b Signed-off-by: Frank Vibrans <frank.vibrans(a)amd.com> Signed-off-by: efdesign98 <efdesign98(a)gmail.com> See http://review.coreboot.org/109 for details. -gerrit

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Patch merged into master: 902f4fe Add the SuperMicro H8QGI platform
by gerrit＠coreboot.org 22 Jul '11

22 Jul '11

the following patch was just integrated into master: commit 902f4fe035c845a31efcac90d16411d320c16f3b Author: efdesign98 <efdesign98(a)gmail.com> Date: Wed Jul 20 13:23:04 2011 -0600 Add the SuperMicro H8QGI platform This set adds support for the SuperMicro H8QGI mainboard. It is a publicly available 4 socket board using AMD Family 10 cpus and AMD SR5650 and SB700 bridges. Change-Id: I196704f79db4c45382559c5ee0619dc8d96ff140 Signed-off-by: Frank Vibrans <frank.vibrans(a)amd.com> Signed-off-by: efdesign98 <efdesign98(a)gmail.com> See http://review.coreboot.org/108 for details. -gerrit

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ASRock e350m1: network problems
by perh52＠runbox.com 22 Jul '11

22 Jul '11

> Start by comparing interrupt setup and interrupt rates with factory BIOS. > > Then drill all the way down through the five-six groups of registers > that are relevant for interrupt handling in the hardware and compare > differences selectively based on ideas gathered from initial behavior > comparison. Write patch. Receive thanks! :) > > >//Peter Indeed. I was hoping someone else might have tried already ;). OK, it may/may not be related, but the first problem I see is that AHCI is on irq 41 instead of irq 19. In the SB800 docs (RPR section 8.13) I see that the SATA controller does not support MSI (or D3 Power State) and these _must_ be disabled by setting the pci config 0x34 (SB_SATA_REG34) to 0x70 but it wrongly equals 0x60. The call to set it is actually there in SATA.c/sataInitAfterPciEnum so it looks like that was not actually called: // Disabled SATA MSI and D3 Power State capability // RPR 8.13 SATA MSI and D3 Power State Capability RWPCI (((SATA_BUS_DEV_FUN << 16) + SB_SATA_REG34), AccWidthUint8 | S3_SAVE, 0, 0x70); Routines that would call it: late.c/sata_enable_resources SBMAIN.c/sbAfterPciInit SBMAIN.c/sbAfterPciRestoreInit Comparing sb900 and sb800 code it appears that the call in late.c has been replaced in sb900 by a call from cpu_bus_init to sb_After_Pci_Init, one of several new routines in early.c. northbridge.c/cpu_bus_init -> early.c/sb_After_Pci_Init -> sbMain.c/sbAfterPciInit -> sataInitAfterPciEnum Can someone comment? Perhaps this is needed in sb800 too?

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Patch set updated: a505632 split CBFS support into shared core and extended functions
by Patrick Georgi 22 Jul '11

22 Jul '11

Patrick Georgi (patrick(a)georgi-clan.de) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/114 -gerrit commit a505632359afe04a6090c8065d33604eb33937c7 Author: Patrick Georgi <patrick.georgi(a)secunet.com> Date: Thu Jul 21 15:11:40 2011 +0200 split CBFS support into shared core and extended functions The core is data structures and basic file finding capabilities, while option ROM handling, and loading stages and payloads is "extended". The core is rewritten to be BSD-l (its header already was), so can be copied to libpayload verbatim. It's also more robust in finding files in corrupted images, eg. after partial erase or update. Change-Id: Ic6923debf8bdf3c67c75746d3b31f3addab3dd74 Signed-off-by: Patrick Georgi <patrick.georgi(a)secunet.com> --- src/include/cbfs.h | 123 +------------------------------- src/include/cbfs_core.h | 180 +++++++++++++++++++++++++++++++++++++++++++++++ src/lib/cbfs.c | 120 ++++---------------------------- src/lib/cbfs_core.c | 174 +++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 370 insertions(+), 227 deletions(-) diff --git a/src/include/cbfs.h b/src/include/cbfs.h index c1c1e33..1483177 100644 --- a/src/include/cbfs.h +++ b/src/include/cbfs.h @@ -49,130 +49,13 @@ #ifndef _CBFS_H_ #define _CBFS_H_ +#include "cbfs_core.h" #include <boot/coreboot_tables.h> -/** These are standard values for the known compression - alogrithms that coreboot knows about for stages and - payloads. Of course, other CBFS users can use whatever - values they want, as long as they understand them. */ -#define CBFS_COMPRESS_NONE 0 -#define CBFS_COMPRESS_LZMA 1 - -/** These are standard component types for well known - components (i.e - those that coreboot needs to consume. - Users are welcome to use any other value for their - components */ - -#define CBFS_TYPE_STAGE 0x10 -#define CBFS_TYPE_PAYLOAD 0x20 -#define CBFS_TYPE_OPTIONROM 0x30 -#define CBFS_TYPE_BOOTSPLASH 0x40 -#define CBFS_TYPE_RAW 0x50 -#define CBFS_TYPE_VSA 0x51 -#define CBFS_TYPE_MBI 0x52 -#define CBFS_TYPE_MICROCODE 0x53 -#define CBFS_COMPONENT_CMOS_DEFAULT 0xaa -#define CBFS_COMPONENT_CMOS_LAYOUT 0x01aa - - -/** this is the master cbfs header - it need to be - located somewhere in the bootblock. Where it - actually lives is up to coreboot. A pointer to - this header will live at 0xFFFFFFFc, so we can - easily find it. */ - -#define CBFS_HEADER_MAGIC 0x4F524243 -#define CBFS_HEADPTR_ADDR 0xFFFFFFFc -#define VERSION1 0x31313131 - -struct cbfs_header { - u32 magic; - u32 version; - u32 romsize; - u32 bootblocksize; - u32 align; - u32 offset; - u32 pad[2]; -} __attribute__((packed)); - -/** This is a component header - every entry in the CBFS - will have this header. - - This is how the component is arranged in the ROM: - - -------------- <- 0 - component header - -------------- <- sizeof(struct component) - component name - -------------- <- offset - data - ... - -------------- <- offset + len -*/ - -#define CBFS_FILE_MAGIC "LARCHIVE" - -struct cbfs_file { - char magic[8]; - u32 len; - u32 type; - u32 checksum; - u32 offset; -} __attribute__((packed)); - -/*** Component sub-headers ***/ - -/* Following are component sub-headers for the "standard" - component types */ - -/** This is the sub-header for stage components. Stages are - loaded by coreboot during the normal boot process */ - -struct cbfs_stage { - u32 compression; /** Compression type */ - u64 entry; /** entry point */ - u64 load; /** Where to load in memory */ - u32 len; /** length of data to load */ - u32 memlen; /** total length of object in memory */ -} __attribute__((packed)); - -/** this is the sub-header for payload components. Payloads - are loaded by coreboot at the end of the boot process */ - -struct cbfs_payload_segment { - u32 type; - u32 compression; - u32 offset; - u64 load_addr; - u32 len; - u32 mem_len; -} __attribute__((packed)); - -struct cbfs_payload { - struct cbfs_payload_segment segments; -}; - -#define PAYLOAD_SEGMENT_CODE 0x45444F43 -#define PAYLOAD_SEGMENT_DATA 0x41544144 -#define PAYLOAD_SEGMENT_BSS 0x20535342 -#define PAYLOAD_SEGMENT_PARAMS 0x41524150 -#define PAYLOAD_SEGMENT_ENTRY 0x52544E45 - -struct cbfs_optionrom { - u32 compression; - u32 len; -} __attribute__((packed)); - -#define CBFS_NAME(_c) (((char *) (_c)) + sizeof(struct cbfs_file)) -#define CBFS_SUBHEADER(_p) ( (void *) ((((u8 *) (_p)) + ntohl((_p)->offset))) ) - -void * cbfs_load_payload(struct lb_memory *lb_mem, const char *name); -void * cbfs_load_stage(const char *name); +void *cbfs_load_payload(struct lb_memory *lb_mem, const char *name); +void *cbfs_load_stage(const char *name); int cbfs_execute_stage(const char *name); -void * cbfs_get_file(const char *name); void *cbfs_load_optionrom(u16 vendor, u16 device, void * dest); int run_address(void *f); -struct cbfs_file *cbfs_find(const char *name); -void *cbfs_find_file(const char *name, int type); #endif diff --git a/src/include/cbfs_core.h b/src/include/cbfs_core.h new file mode 100644 index 0000000..fbe0081 --- /dev/null +++ b/src/include/cbfs_core.h @@ -0,0 +1,180 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008 Jordan Crouse <jordan(a)cosmicpenguin.net> + * + * This file is dual-licensed. You can choose between: + * - The GNU GPL, version 2, as published by the Free Software Foundation + * - The revised BSD license (without advertising clause) + * + * --------------------------------------------------------------------------- + * 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; version 2 of the License. + * + * 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., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA + * --------------------------------------------------------------------------- + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * --------------------------------------------------------------------------- + */ + +#ifndef _CBFS_CORE_H_ +#define _CBFS_CORE_H_ + +/** These are standard values for the known compression + alogrithms that coreboot knows about for stages and + payloads. Of course, other CBFS users can use whatever + values they want, as long as they understand them. */ + +#define CBFS_COMPRESS_NONE 0 +#define CBFS_COMPRESS_LZMA 1 + +/** These are standard component types for well known + components (i.e - those that coreboot needs to consume. + Users are welcome to use any other value for their + components */ + +#define CBFS_TYPE_STAGE 0x10 +#define CBFS_TYPE_PAYLOAD 0x20 +#define CBFS_TYPE_OPTIONROM 0x30 +#define CBFS_TYPE_BOOTSPLASH 0x40 +#define CBFS_TYPE_RAW 0x50 +#define CBFS_TYPE_VSA 0x51 +#define CBFS_TYPE_MBI 0x52 +#define CBFS_TYPE_MICROCODE 0x53 +#define CBFS_COMPONENT_CMOS_DEFAULT 0xaa +#define CBFS_COMPONENT_CMOS_LAYOUT 0x01aa + + +/** this is the master cbfs header - it need to be + located somewhere in the bootblock. Where it + actually lives is up to coreboot. A pointer to + this header will live at 0xFFFFFFFc, so we can + easily find it. */ + +#define CBFS_HEADER_MAGIC 0x4F524243 +#define CBFS_HEADPTR_ADDR 0xFFFFFFFc +#define VERSION1 0x31313131 + +struct cbfs_header { + uint32_t magic; + uint32_t version; + uint32_t romsize; + uint32_t bootblocksize; + uint32_t align; + uint32_t offset; + uint32_t pad[2]; +} __attribute__((packed)); + +/** This is a component header - every entry in the CBFS + will have this header. + + This is how the component is arranged in the ROM: + + -------------- <- 0 + component header + -------------- <- sizeof(struct component) + component name + -------------- <- offset + data + ... + -------------- <- offset + len +*/ + +#define CBFS_FILE_MAGIC "LARCHIVE" + +struct cbfs_file { + char magic[8]; + uint32_t len; + uint32_t type; + uint32_t checksum; + uint32_t offset; +} __attribute__((packed)); + +/*** Component sub-headers ***/ + +/* Following are component sub-headers for the "standard" + component types */ + +/** This is the sub-header for stage components. Stages are + loaded by coreboot during the normal boot process */ + +struct cbfs_stage { + uint32_t compression; /** Compression type */ + uint64_t entry; /** entry point */ + uint64_t load; /** Where to load in memory */ + uint32_t len; /** length of data to load */ + uint32_t memlen; /** total length of object in memory */ +} __attribute__((packed)); + +/** this is the sub-header for payload components. Payloads + are loaded by coreboot at the end of the boot process */ + +struct cbfs_payload_segment { + uint32_t type; + uint32_t compression; + uint32_t offset; + uint64_t load_addr; + uint32_t len; + uint32_t mem_len; +} __attribute__((packed)); + +struct cbfs_payload { + struct cbfs_payload_segment segments; +}; + +#define PAYLOAD_SEGMENT_CODE 0x45444F43 +#define PAYLOAD_SEGMENT_DATA 0x41544144 +#define PAYLOAD_SEGMENT_BSS 0x20535342 +#define PAYLOAD_SEGMENT_PARAMS 0x41524150 +#define PAYLOAD_SEGMENT_ENTRY 0x52544E45 + +struct cbfs_optionrom { + uint32_t compression; + uint32_t len; +} __attribute__((packed)); + +#define CBFS_NAME(_c) (((char *) (_c)) + sizeof(struct cbfs_file)) +#define CBFS_SUBHEADER(_p) ( (void *) ((((uint8_t *) (_p)) + ntohl((_p)->offset))) ) + +/* returns pointer to file inside CBFS or NULL */ +struct cbfs_file *cbfs_find(const char *name); + +/* returns pointer to file data inside CBFS */ +void *cbfs_get_file(const char *name); + +/* returns pointer to file data inside CBFS after if type is correct */ +void *cbfs_find_file(const char *name, int type); + +/* returns 0 on success, -1 on failure */ +int cbfs_decompress(int algo, void *src, void *dst, int len); +#endif + diff --git a/src/lib/cbfs.c b/src/lib/cbfs.c index 7cfa3e2..20c9d49 100644 --- a/src/lib/cbfs.c +++ b/src/lib/cbfs.c @@ -24,85 +24,19 @@ #include <lib.h> #include <arch/byteorder.h> +// use CBFS core +#ifndef __SMM__ +#define CBFS_CORE_WITH_LZMA +#endif +#define phys_to_virt(x) (void*)(x) +#define virt_to_phys(x) (uint32_t)(x) +#define ERROR(x...) printk(BIOS_ERR, x) +#define LOG(x...) printk(BIOS_INFO, x) +// FIXME: romstart/romend are fine on x86, but not on ARM +#define romstart() 0xffffffff +#define romend() 0 -static int cbfs_check_magic(struct cbfs_file *file) -{ - return !strcmp(file->magic, CBFS_FILE_MAGIC) ? 1 : 0; -} - -static struct cbfs_header *cbfs_master_header(void) -{ - struct cbfs_header *header; - - void *ptr = (void *)*((unsigned long *) CBFS_HEADPTR_ADDR); - printk(BIOS_SPEW, "Check CBFS header at %p\n", ptr); - header = (struct cbfs_header *) ptr; - - printk(BIOS_SPEW, "magic is %08x\n", ntohl(header->magic)); - if (ntohl(header->magic) != CBFS_HEADER_MAGIC) { - printk(BIOS_ERR, "ERROR: No valid CBFS header found!\n"); - if (header->magic == 0xffffffff) { - printk(BIOS_ERR, "Maybe the ROM isn't entirely mapped yet?\n" - "See (and report to) http://www.coreboot.org/Infrastructure_Projects#CBFS\n"); - } - return NULL; - } - - printk(BIOS_SPEW, "Found CBFS header at %p\n", ptr); - return header; -} - -struct cbfs_file *cbfs_find(const char *name) -{ - struct cbfs_header *header = cbfs_master_header(); - unsigned long offset; - - if (header == NULL) - return NULL; - offset = 0 - ntohl(header->romsize) + ntohl(header->offset); - - int align= ntohl(header->align); - - while(1) { - struct cbfs_file *file = (struct cbfs_file *) offset; - if (!cbfs_check_magic(file)) return NULL; - printk(BIOS_SPEW, "Check %s\n", CBFS_NAME(file)); - if (!strcmp(CBFS_NAME(file), name)) - return file; - - int flen = ntohl(file->len); - int foffset = ntohl(file->offset); - printk(BIOS_SPEW, "CBFS: follow chain: %p + %x + %x + align -> ", (void *)offset, foffset, flen); - - unsigned long oldoffset = offset; - offset = ALIGN(offset + foffset + flen, align); - printk(BIOS_SPEW, "%p\n", (void *)offset); - if (offset <= oldoffset) return NULL; - - if (offset < 0xFFFFFFFF - ntohl(header->romsize)) - return NULL; - } -} - -void *cbfs_find_file(const char *name, int type) -{ - struct cbfs_file *file = cbfs_find(name); - - if (file == NULL) { - printk(BIOS_INFO, "CBFS: Could not find file %s\n", - name); - return NULL; - } - - if (ntohl(file->type) != type) { - printk(BIOS_INFO, "CBFS: File %s is of type %x instead of" - "type %x\n", name, file->type, type); - - return NULL; - } - - return (void *) CBFS_SUBHEADER(file); -} +#include "cbfs_core.c" #ifndef __SMM__ static inline int tohex4(unsigned int c) @@ -118,34 +52,6 @@ static void tohex16(unsigned int val, char* dest) dest[3]=tohex4(val & 0xf); } -/** - * Decompression wrapper for CBFS - * @param algo - * @param src - * @param dst - * @param len - * @return 0 on success, -1 on failure - */ -static int cbfs_decompress(int algo, void *src, void *dst, int len) -{ - switch(algo) { - case CBFS_COMPRESS_NONE: - memcpy(dst, src, len); - return 0; - - case CBFS_COMPRESS_LZMA: - if (!ulzma(src, dst)) { - printk(BIOS_ERR, "CBFS: LZMA decompression failed!\n"); - return -1; - } - return 0; - default: - printk(BIOS_INFO, "CBFS: Unknown compression type %d\n", algo); - return -1; - } -} - - void *cbfs_load_optionrom(u16 vendor, u16 device, void * dest) { char name[17]="pciXXXX,XXXX.rom"; diff --git a/src/lib/cbfs_core.c b/src/lib/cbfs_core.c new file mode 100644 index 0000000..aa64bd7 --- /dev/null +++ b/src/lib/cbfs_core.c @@ -0,0 +1,174 @@ +/* + * This file is part of the libpayload project. + * + * Copyright (C) 2011 secunet Security Networks AG + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* The CBFS core requires a couple of #defines or functions to adapt it to the target environment: + * + * CBFS_CORE_WITH_LZMA (must be #define) + * if defined, ulzma() must exist for decompression of data streams + * + * phys_to_virt(x), virt_to_phys(x) + * translate physical addresses to virtual and vice versa + * can be idempotent if no mapping is necessary. + * + * ERROR(x...) + * print an error message x (in printf format) + * + * LOG(x...) + * print a debug message x (in printf format) + * + * romstart() + * returns the start address of the ROM image, or 0xffffffff if ROM is + * top-aligned. This is a physical address. + * + * romend() + * returns the highest address of the ROM image + 1, for use if + * romstart() == 0xffffffff. This is a physical address. + */ + +#include <cbfs_core.h> + + +/* returns pointer to master header or 0xffffffff if not found */ +static struct cbfs_header *get_cbfs_header(void) +{ + struct cbfs_header *header; + + /* find header */ + if (romstart() == 0xffffffff) { + header = (struct cbfs_header*)phys_to_virt(*(struct cbfs_header**)phys_to_virt(romend() + CBFS_HEADPTR_ADDR)); + } else { + // FIXME: where's the master header on ARM (our current bottom-aligned platform)? + header = NULL; + } + if (CBFS_HEADER_MAGIC != ntohl(header->magic)) { + ERROR("Could not find valid CBFS master header at %p: %x vs %x.\n", header, CBFS_HEADER_MAGIC, ntohl(header->magic)); + if (header->magic == 0xffffffff) { + ERROR("Maybe ROM is not mapped properly?\n"); + } + return (void*)0xffffffff; + } + return header; +} + +// by must be power-of-two +#define CBFS_ALIGN(val, by) (typeof(val))((uint32_t)(val + by - 1) & (uint32_t)~(by - 1)) +#define CBFS_ALIGN_UP(val, by) CBFS_ALIGN(val + 1, by) + +/* public API starts here*/ +struct cbfs_file *cbfs_find(const char *name) +{ + struct cbfs_header *header = get_cbfs_header(); + if (header == (void*)0xffffffff) return NULL; + + LOG("Searching for %s\n", name); + + void *data, *dataend, *origdata; + /* find first entry */ + if (romstart() == 0xffffffff) { + data = (void*)phys_to_virt(romend()) - ntohl(header->romsize) + ntohl(header->offset); + dataend = (void*)phys_to_virt(romend()); + } else { + data = (void*)phys_to_virt(romstart()) + ntohl(header->offset); + dataend = (void*)phys_to_virt(romstart()) + ntohl(header->romsize); + } + + int align = ntohl(header->align); + + origdata = data; + while ((data < (dataend - 1)) && (data >= origdata)) { + struct cbfs_file *file = data; + if (memcmp(CBFS_FILE_MAGIC, file->magic, strlen(CBFS_FILE_MAGIC)) != 0) { + // no file header found. corruption? + // proceed in aligned steps to resynchronize + LOG("No file header found at %p, searching for header\n", data); + data = phys_to_virt(CBFS_ALIGN_UP(virt_to_phys(data), align)); + continue; + } + LOG("Check %s\n", CBFS_NAME(file)); + if (strcmp(CBFS_NAME(file), name) == 0) { + return file; + } + void *olddata = data; + data = phys_to_virt(CBFS_ALIGN(virt_to_phys(data) + ntohl(file->len) + ntohl(file->offset), align)); + if (olddata > data) { + LOG("Something is wrong here. File chain moved from %p to %p\n", olddata, data); + return NULL; + } + } + return NULL; +} + +void *cbfs_get_file(const char *name) +{ + struct cbfs_file *file = cbfs_find(name); + + if (file == NULL) { + ERROR("Could not find file '%s'.\n", name); + return NULL; + } + + return (void*)CBFS_SUBHEADER(file); +} + +void *cbfs_find_file(const char *name, int type) +{ + struct cbfs_file *file = cbfs_find(name); + + if (file == NULL) { + ERROR("Could not find file '%s'.\n", name); + return NULL; + } + + if (ntohl(file->type) != type) { + ERROR("File '%s' is of type %x, but we requested %x.\n", name, ntohl(file->type), type); + return NULL; + } + + return (void*)CBFS_SUBHEADER(file); +} + +int cbfs_decompress(int algo, void *src, void *dst, int len) +{ + switch (algo) { + case CBFS_COMPRESS_NONE: + memcpy(dst, src, len); + return 0; +#ifdef CBFS_CORE_WITH_LZMA + case CBFS_COMPRESS_LZMA: + if (ulzma(src, dst) != 0) { + return 0; + } + return -1; +#endif + default: + ERROR("tried to decompress %d bytes with algorithm #%x, but that algorithm id is unsupported.\n", len, algo); + return -1; + } +} +

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Patch set updated: af4ab46 libpayload: Add liblzma, libcbfs
by Patrick Georgi 22 Jul '11

22 Jul '11

Patrick Georgi (patrick(a)georgi-clan.de) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/115 -gerrit commit af4ab4687faddbc4a84d8fb1982fc092f4867b7d Author: Patrick Georgi <patrick.georgi(a)secunet.com> Date: Thu Jul 21 15:43:14 2011 +0200 libpayload: Add liblzma, libcbfs Add cbfs core from coreboot into libpayload, and to support lzma decode, add coreboot's lzma code, too. Carl-Daniel agreed to relicense the lzmadecode wrapper as BSD-l, solving licensing problems. Change-Id: Id28990fe7e951d99447e265a4880d70a8f208dd2 Signed-off-by: Patrick Georgi <patrick.georgi(a)secunet.com> --- payloads/libpayload/Config.in | 9 +- payloads/libpayload/Makefile.inc | 4 + payloads/libpayload/configs/defconfig | 7 +- payloads/libpayload/include/cbfs.h | 2 + payloads/libpayload/include/cbfs_core.h | 180 ++++++++++++++ payloads/libpayload/include/lzma.h | 40 +++ payloads/libpayload/libc/Makefile.inc | 1 - payloads/libpayload/libcbfs/Makefile.inc | 31 +++ payloads/libpayload/libcbfs/cbfs.c | 78 ++++++ payloads/libpayload/libcbfs/cbfs_core.c | 174 +++++++++++++ payloads/libpayload/liblzma/Makefile.inc | 31 +++ payloads/libpayload/liblzma/lzma.c | 47 ++++ payloads/libpayload/liblzma/lzmadecode.c | 398 ++++++++++++++++++++++++++++++ payloads/libpayload/liblzma/lzmadecode.h | 67 +++++ 14 files changed, 1065 insertions(+), 4 deletions(-) diff --git a/payloads/libpayload/Config.in b/payloads/libpayload/Config.in index 028dd33..0ce4ae5 100644 --- a/payloads/libpayload/Config.in +++ b/payloads/libpayload/Config.in @@ -129,7 +129,14 @@ config CBFS bool "CBFS support" default y help - CBFS is the archive format of (obsolete) coreboot v3 + CBFS is the archive format of coreboot + +config LZMA + bool "LZMA decoder" + default y + help + LZMA decoder implementation, usable eg. by CBFS, + but also externally. endmenu menu "Console Options" diff --git a/payloads/libpayload/Makefile.inc b/payloads/libpayload/Makefile.inc index 5a7d142..9e40d0f 100644 --- a/payloads/libpayload/Makefile.inc +++ b/payloads/libpayload/Makefile.inc @@ -41,6 +41,8 @@ classes-$(CONFIG_PCI) += libpci classes-$(CONFIG_LIBC) += libc classes-$(CONFIG_CURSES) += libcurses classes-$(CONFIG_PDCURSES) += libmenu libform libpanel +classes-$(CONFIG_CBFS) += libcbfs +classes-$(CONFIG_LZMA) += liblzma libraries := $(classes-y) classes-y += head.o @@ -52,6 +54,8 @@ head.o-S-deps = $(obj)/libpayload-config.h subdirs-y := arch/$(ARCHDIR-y) subdirs-y += crypto libc drivers libpci subdirs-$(CONFIG_CURSES) += curses +subdirs-$(CONFIG_CBFS) += libcbfs +subdirs-$(CONFIG_LZMA) += liblzma INCLUDES := -Iinclude -Iinclude/$(ARCHDIR-y) -I$(obj) CFLAGS = $(INCLUDES) -O2 -pipe -g diff --git a/payloads/libpayload/configs/defconfig b/payloads/libpayload/configs/defconfig index 6d514d6..8d50f56 100644 --- a/payloads/libpayload/configs/defconfig +++ b/payloads/libpayload/configs/defconfig @@ -1,7 +1,7 @@ # # Automatically generated make config: don't edit # libpayload version: 0.2.0 -# Tue Jul 12 15:54:09 2011 +# Thu Jul 21 15:45:38 2011 # # @@ -23,8 +23,11 @@ CONFIG_TARGET_I386=y # Standard Libraries # CONFIG_LIBC=y +CONFIG_CURSES=y +# CONFIG_TINYCURSES is not set CONFIG_PDCURSES=y -# CONFIG_CBFS is not set +CONFIG_CBFS=y +CONFIG_LZMA=y # # Console Options diff --git a/payloads/libpayload/include/cbfs.h b/payloads/libpayload/include/cbfs.h new file mode 100644 index 0000000..681caeb --- /dev/null +++ b/payloads/libpayload/include/cbfs.h @@ -0,0 +1,2 @@ +#include <arch/types.h> +#include "cbfs_core.h" diff --git a/payloads/libpayload/include/cbfs_core.h b/payloads/libpayload/include/cbfs_core.h new file mode 100644 index 0000000..fbe0081 --- /dev/null +++ b/payloads/libpayload/include/cbfs_core.h @@ -0,0 +1,180 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008 Jordan Crouse <jordan(a)cosmicpenguin.net> + * + * This file is dual-licensed. You can choose between: + * - The GNU GPL, version 2, as published by the Free Software Foundation + * - The revised BSD license (without advertising clause) + * + * --------------------------------------------------------------------------- + * 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; version 2 of the License. + * + * 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., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA + * --------------------------------------------------------------------------- + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * --------------------------------------------------------------------------- + */ + +#ifndef _CBFS_CORE_H_ +#define _CBFS_CORE_H_ + +/** These are standard values for the known compression + alogrithms that coreboot knows about for stages and + payloads. Of course, other CBFS users can use whatever + values they want, as long as they understand them. */ + +#define CBFS_COMPRESS_NONE 0 +#define CBFS_COMPRESS_LZMA 1 + +/** These are standard component types for well known + components (i.e - those that coreboot needs to consume. + Users are welcome to use any other value for their + components */ + +#define CBFS_TYPE_STAGE 0x10 +#define CBFS_TYPE_PAYLOAD 0x20 +#define CBFS_TYPE_OPTIONROM 0x30 +#define CBFS_TYPE_BOOTSPLASH 0x40 +#define CBFS_TYPE_RAW 0x50 +#define CBFS_TYPE_VSA 0x51 +#define CBFS_TYPE_MBI 0x52 +#define CBFS_TYPE_MICROCODE 0x53 +#define CBFS_COMPONENT_CMOS_DEFAULT 0xaa +#define CBFS_COMPONENT_CMOS_LAYOUT 0x01aa + + +/** this is the master cbfs header - it need to be + located somewhere in the bootblock. Where it + actually lives is up to coreboot. A pointer to + this header will live at 0xFFFFFFFc, so we can + easily find it. */ + +#define CBFS_HEADER_MAGIC 0x4F524243 +#define CBFS_HEADPTR_ADDR 0xFFFFFFFc +#define VERSION1 0x31313131 + +struct cbfs_header { + uint32_t magic; + uint32_t version; + uint32_t romsize; + uint32_t bootblocksize; + uint32_t align; + uint32_t offset; + uint32_t pad[2]; +} __attribute__((packed)); + +/** This is a component header - every entry in the CBFS + will have this header. + + This is how the component is arranged in the ROM: + + -------------- <- 0 + component header + -------------- <- sizeof(struct component) + component name + -------------- <- offset + data + ... + -------------- <- offset + len +*/ + +#define CBFS_FILE_MAGIC "LARCHIVE" + +struct cbfs_file { + char magic[8]; + uint32_t len; + uint32_t type; + uint32_t checksum; + uint32_t offset; +} __attribute__((packed)); + +/*** Component sub-headers ***/ + +/* Following are component sub-headers for the "standard" + component types */ + +/** This is the sub-header for stage components. Stages are + loaded by coreboot during the normal boot process */ + +struct cbfs_stage { + uint32_t compression; /** Compression type */ + uint64_t entry; /** entry point */ + uint64_t load; /** Where to load in memory */ + uint32_t len; /** length of data to load */ + uint32_t memlen; /** total length of object in memory */ +} __attribute__((packed)); + +/** this is the sub-header for payload components. Payloads + are loaded by coreboot at the end of the boot process */ + +struct cbfs_payload_segment { + uint32_t type; + uint32_t compression; + uint32_t offset; + uint64_t load_addr; + uint32_t len; + uint32_t mem_len; +} __attribute__((packed)); + +struct cbfs_payload { + struct cbfs_payload_segment segments; +}; + +#define PAYLOAD_SEGMENT_CODE 0x45444F43 +#define PAYLOAD_SEGMENT_DATA 0x41544144 +#define PAYLOAD_SEGMENT_BSS 0x20535342 +#define PAYLOAD_SEGMENT_PARAMS 0x41524150 +#define PAYLOAD_SEGMENT_ENTRY 0x52544E45 + +struct cbfs_optionrom { + uint32_t compression; + uint32_t len; +} __attribute__((packed)); + +#define CBFS_NAME(_c) (((char *) (_c)) + sizeof(struct cbfs_file)) +#define CBFS_SUBHEADER(_p) ( (void *) ((((uint8_t *) (_p)) + ntohl((_p)->offset))) ) + +/* returns pointer to file inside CBFS or NULL */ +struct cbfs_file *cbfs_find(const char *name); + +/* returns pointer to file data inside CBFS */ +void *cbfs_get_file(const char *name); + +/* returns pointer to file data inside CBFS after if type is correct */ +void *cbfs_find_file(const char *name, int type); + +/* returns 0 on success, -1 on failure */ +int cbfs_decompress(int algo, void *src, void *dst, int len); +#endif + diff --git a/payloads/libpayload/include/lzma.h b/payloads/libpayload/include/lzma.h new file mode 100644 index 0000000..a9b5c2b --- /dev/null +++ b/payloads/libpayload/include/lzma.h @@ -0,0 +1,40 @@ +/* + * This file is part of the libpayload project. + * + * Copyright (C) 2011 secunet Security Networks AG + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef _STDIO_H +#define _STDIO_H + +/* decompresses the data stream at src to dst, determining its length from + * the data stream itself. + * + * returns the decompressed size, or 0 on error + */ +unsigned long ulzma(unsigned char *src, unsigned char *dst); + +#endif diff --git a/payloads/libpayload/libc/Makefile.inc b/payloads/libpayload/libc/Makefile.inc index 0dab8c1..eef4f46 100644 --- a/payloads/libpayload/libc/Makefile.inc +++ b/payloads/libpayload/libc/Makefile.inc @@ -38,4 +38,3 @@ libc-$(CONFIG_LIBC) += qsort.c # should be moved to coreboot directory libc-$(CONFIG_LAR) += lar.c -#libc-$(CONFIG_CBFS) += cbfs.c diff --git a/payloads/libpayload/libcbfs/Makefile.inc b/payloads/libpayload/libcbfs/Makefile.inc new file mode 100644 index 0000000..50f4821 --- /dev/null +++ b/payloads/libpayload/libcbfs/Makefile.inc @@ -0,0 +1,31 @@ +## +## This file is part of the libpayload project. +## +## Copyright (C) 2011 secunet Security Networks AG +## +## Redistribution and use in source and binary forms, with or without +## modification, are permitted provided that the following conditions +## are met: +## 1. Redistributions of source code must retain the above copyright +## notice, this list of conditions and the following disclaimer. +## 2. Redistributions in binary form must reproduce the above copyright +## notice, this list of conditions and the following disclaimer in the +## documentation and/or other materials provided with the distribution. +## 3. The name of the author may not be used to endorse or promote products +## derived from this software without specific prior written permission. +## +## THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +## ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +## IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +## ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +## FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +## DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +## OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +## HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +## LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +## OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +## SUCH DAMAGE. +## + +libcbfs-$(CONFIG_CBFS) += cbfs.c + diff --git a/payloads/libpayload/libcbfs/cbfs.c b/payloads/libpayload/libcbfs/cbfs.c new file mode 100644 index 0000000..c7173e0 --- /dev/null +++ b/payloads/libpayload/libcbfs/cbfs.c @@ -0,0 +1,78 @@ +/* + * This file is part of the libpayload project. + * + * Copyright (C) 2011 secunet Security Networks AG + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <arch/endian.h> +#include <stdio.h> +#include <string.h> +#include <cbfs.h> + +#ifdef CONFIG_LZMA +#define CBFS_CORE_WITH_LZMA +#include <lzma.h> +#endif + +#define ERROR(x...) printf(x) +#define LOG(x...) + +uint32_t host_virt_to_phys(void *addr); +void *host_phys_to_virt(uint32_t addr); + +uint32_t romstart(void); +uint32_t romend(void); + +#include <arch/virtual.h> +uint32_t host_virt_to_phys(void *addr) { + return virt_to_phys(addr); +} + +void *host_phys_to_virt(uint32_t addr) { + return phys_to_virt(addr); +} +#undef virt_to_phys +#undef phys_to_virt + +uint32_t (*virt_to_phys)(void *) = host_virt_to_phys; +void* (*phys_to_virt)(uint32_t) = host_phys_to_virt; + + +uint32_t _romstart = 0xffffffff; +uint32_t _romend = 0; + +uint32_t romstart(void) +{ + return _romstart; +} + +uint32_t romend(void) +{ + return _romend; +} + +#include "cbfs_core.c" + diff --git a/payloads/libpayload/libcbfs/cbfs_core.c b/payloads/libpayload/libcbfs/cbfs_core.c new file mode 100644 index 0000000..aa64bd7 --- /dev/null +++ b/payloads/libpayload/libcbfs/cbfs_core.c @@ -0,0 +1,174 @@ +/* + * This file is part of the libpayload project. + * + * Copyright (C) 2011 secunet Security Networks AG + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* The CBFS core requires a couple of #defines or functions to adapt it to the target environment: + * + * CBFS_CORE_WITH_LZMA (must be #define) + * if defined, ulzma() must exist for decompression of data streams + * + * phys_to_virt(x), virt_to_phys(x) + * translate physical addresses to virtual and vice versa + * can be idempotent if no mapping is necessary. + * + * ERROR(x...) + * print an error message x (in printf format) + * + * LOG(x...) + * print a debug message x (in printf format) + * + * romstart() + * returns the start address of the ROM image, or 0xffffffff if ROM is + * top-aligned. This is a physical address. + * + * romend() + * returns the highest address of the ROM image + 1, for use if + * romstart() == 0xffffffff. This is a physical address. + */ + +#include <cbfs_core.h> + + +/* returns pointer to master header or 0xffffffff if not found */ +static struct cbfs_header *get_cbfs_header(void) +{ + struct cbfs_header *header; + + /* find header */ + if (romstart() == 0xffffffff) { + header = (struct cbfs_header*)phys_to_virt(*(struct cbfs_header**)phys_to_virt(romend() + CBFS_HEADPTR_ADDR)); + } else { + // FIXME: where's the master header on ARM (our current bottom-aligned platform)? + header = NULL; + } + if (CBFS_HEADER_MAGIC != ntohl(header->magic)) { + ERROR("Could not find valid CBFS master header at %p: %x vs %x.\n", header, CBFS_HEADER_MAGIC, ntohl(header->magic)); + if (header->magic == 0xffffffff) { + ERROR("Maybe ROM is not mapped properly?\n"); + } + return (void*)0xffffffff; + } + return header; +} + +// by must be power-of-two +#define CBFS_ALIGN(val, by) (typeof(val))((uint32_t)(val + by - 1) & (uint32_t)~(by - 1)) +#define CBFS_ALIGN_UP(val, by) CBFS_ALIGN(val + 1, by) + +/* public API starts here*/ +struct cbfs_file *cbfs_find(const char *name) +{ + struct cbfs_header *header = get_cbfs_header(); + if (header == (void*)0xffffffff) return NULL; + + LOG("Searching for %s\n", name); + + void *data, *dataend, *origdata; + /* find first entry */ + if (romstart() == 0xffffffff) { + data = (void*)phys_to_virt(romend()) - ntohl(header->romsize) + ntohl(header->offset); + dataend = (void*)phys_to_virt(romend()); + } else { + data = (void*)phys_to_virt(romstart()) + ntohl(header->offset); + dataend = (void*)phys_to_virt(romstart()) + ntohl(header->romsize); + } + + int align = ntohl(header->align); + + origdata = data; + while ((data < (dataend - 1)) && (data >= origdata)) { + struct cbfs_file *file = data; + if (memcmp(CBFS_FILE_MAGIC, file->magic, strlen(CBFS_FILE_MAGIC)) != 0) { + // no file header found. corruption? + // proceed in aligned steps to resynchronize + LOG("No file header found at %p, searching for header\n", data); + data = phys_to_virt(CBFS_ALIGN_UP(virt_to_phys(data), align)); + continue; + } + LOG("Check %s\n", CBFS_NAME(file)); + if (strcmp(CBFS_NAME(file), name) == 0) { + return file; + } + void *olddata = data; + data = phys_to_virt(CBFS_ALIGN(virt_to_phys(data) + ntohl(file->len) + ntohl(file->offset), align)); + if (olddata > data) { + LOG("Something is wrong here. File chain moved from %p to %p\n", olddata, data); + return NULL; + } + } + return NULL; +} + +void *cbfs_get_file(const char *name) +{ + struct cbfs_file *file = cbfs_find(name); + + if (file == NULL) { + ERROR("Could not find file '%s'.\n", name); + return NULL; + } + + return (void*)CBFS_SUBHEADER(file); +} + +void *cbfs_find_file(const char *name, int type) +{ + struct cbfs_file *file = cbfs_find(name); + + if (file == NULL) { + ERROR("Could not find file '%s'.\n", name); + return NULL; + } + + if (ntohl(file->type) != type) { + ERROR("File '%s' is of type %x, but we requested %x.\n", name, ntohl(file->type), type); + return NULL; + } + + return (void*)CBFS_SUBHEADER(file); +} + +int cbfs_decompress(int algo, void *src, void *dst, int len) +{ + switch (algo) { + case CBFS_COMPRESS_NONE: + memcpy(dst, src, len); + return 0; +#ifdef CBFS_CORE_WITH_LZMA + case CBFS_COMPRESS_LZMA: + if (ulzma(src, dst) != 0) { + return 0; + } + return -1; +#endif + default: + ERROR("tried to decompress %d bytes with algorithm #%x, but that algorithm id is unsupported.\n", len, algo); + return -1; + } +} + diff --git a/payloads/libpayload/liblzma/Makefile.inc b/payloads/libpayload/liblzma/Makefile.inc new file mode 100644 index 0000000..2dd4a2d --- /dev/null +++ b/payloads/libpayload/liblzma/Makefile.inc @@ -0,0 +1,31 @@ +## +## This file is part of the libpayload project. +## +## Copyright (C) 2011 secunet Security Networks AG +## +## Redistribution and use in source and binary forms, with or without +## modification, are permitted provided that the following conditions +## are met: +## 1. Redistributions of source code must retain the above copyright +## notice, this list of conditions and the following disclaimer. +## 2. Redistributions in binary form must reproduce the above copyright +## notice, this list of conditions and the following disclaimer in the +## documentation and/or other materials provided with the distribution. +## 3. The name of the author may not be used to endorse or promote products +## derived from this software without specific prior written permission. +## +## THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +## ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +## IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +## ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +## FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +## DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +## OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +## HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +## LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +## OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +## SUCH DAMAGE. +## + +liblzma-$(CONFIG_LZMA) += lzma.c + diff --git a/payloads/libpayload/liblzma/lzma.c b/payloads/libpayload/liblzma/lzma.c new file mode 100644 index 0000000..fdda30d --- /dev/null +++ b/payloads/libpayload/liblzma/lzma.c @@ -0,0 +1,47 @@ +/* + * coreboot interface to memory-saving variant of LZMA decoder + * + * Copyright (C) 2006 Carl-Daniel Hailfinger + * Released under the BSD license + * + * Parts of this file are based on C/7zip/Compress/LZMA_C/LzmaTest.c from the LZMA + * SDK 4.42, which is written and distributed to public domain by Igor Pavlov. + * + */ + +#include <lzma.h> +#include <stdio.h> +#include <string.h> +#include "lzmadecode.c" + +unsigned long ulzma(unsigned char * src, unsigned char * dst) +{ + unsigned char properties[LZMA_PROPERTIES_SIZE]; + UInt32 outSize; + SizeT inProcessed; + SizeT outProcessed; + int res; + CLzmaDecoderState state; + SizeT mallocneeds; + unsigned char scratchpad[15980]; + + memcpy(properties, src, LZMA_PROPERTIES_SIZE); + outSize = *(UInt32 *)(src + LZMA_PROPERTIES_SIZE); + if (LzmaDecodeProperties(&state.Properties, properties, LZMA_PROPERTIES_SIZE) != LZMA_RESULT_OK) { + printf("lzma: Incorrect stream properties.\n"); + return 0; + } + mallocneeds = (LzmaGetNumProbs(&state.Properties) * sizeof(CProb)); + if (mallocneeds > 15980) { + printf("lzma: Decoder scratchpad too small!\n"); + return 0; + } + state.Probs = (CProb *)scratchpad; + res = LzmaDecode(&state, src + LZMA_PROPERTIES_SIZE + 8, (SizeT)0xffffffff, &inProcessed, + dst, outSize, &outProcessed); + if (res != 0) { + printf("lzma: Decoding error = %d\n", res); + return 0; + } + return outSize; +} diff --git a/payloads/libpayload/liblzma/lzmadecode.c b/payloads/libpayload/liblzma/lzmadecode.c new file mode 100644 index 0000000..1cf647d --- /dev/null +++ b/payloads/libpayload/liblzma/lzmadecode.c @@ -0,0 +1,398 @@ +/* + LzmaDecode.c + LZMA Decoder (optimized for Speed version) + + LZMA SDK 4.40 Copyright (c) 1999-2006 Igor Pavlov (2006-05-01) + http://www.7-zip.org/ + + LZMA SDK is licensed under two licenses: + 1) GNU Lesser General Public License (GNU LGPL) + 2) Common Public License (CPL) + It means that you can select one of these two licenses and + follow rules of that license. + + SPECIAL EXCEPTION: + Igor Pavlov, as the author of this Code, expressly permits you to + statically or dynamically link your Code (or bind by name) to the + interfaces of this file without subjecting your linked Code to the + terms of the CPL or GNU LGPL. Any modifications or additions + to this file, however, are subject to the LGPL or CPL terms. +*/ + +#include "lzmadecode.h" + +#define kNumTopBits 24 +#define kTopValue ((UInt32)1 << kNumTopBits) + +#define kNumBitModelTotalBits 11 +#define kBitModelTotal (1 << kNumBitModelTotalBits) +#define kNumMoveBits 5 + +#define RC_READ_BYTE (*Buffer++) + +#define RC_INIT2 Code = 0; Range = 0xFFFFFFFF; \ + { int i; for(i = 0; i < 5; i++) { RC_TEST; Code = (Code << 8) | RC_READ_BYTE; }} + + +#define RC_TEST { if (Buffer == BufferLim) return LZMA_RESULT_DATA_ERROR; } + +#define RC_INIT(buffer, bufferSize) Buffer = buffer; BufferLim = buffer + bufferSize; RC_INIT2 + + +#define RC_NORMALIZE if (Range < kTopValue) { RC_TEST; Range <<= 8; Code = (Code << 8) | RC_READ_BYTE; } + +#define IfBit0(p) RC_NORMALIZE; bound = (Range >> kNumBitModelTotalBits) * *(p); if (Code < bound) +#define UpdateBit0(p) Range = bound; *(p) += (kBitModelTotal - *(p)) >> kNumMoveBits; +#define UpdateBit1(p) Range -= bound; Code -= bound; *(p) -= (*(p)) >> kNumMoveBits; + +#define RC_GET_BIT2(p, mi, A0, A1) IfBit0(p) \ + { UpdateBit0(p); mi <<= 1; A0; } else \ + { UpdateBit1(p); mi = (mi + mi) + 1; A1; } + +#define RC_GET_BIT(p, mi) RC_GET_BIT2(p, mi, ; , ;) + +#define RangeDecoderBitTreeDecode(probs, numLevels, res) \ + { int i = numLevels; res = 1; \ + do { CProb *cp = probs + res; RC_GET_BIT(cp, res) } while(--i != 0); \ + res -= (1 << numLevels); } + + +#define kNumPosBitsMax 4 +#define kNumPosStatesMax (1 << kNumPosBitsMax) + +#define kLenNumLowBits 3 +#define kLenNumLowSymbols (1 << kLenNumLowBits) +#define kLenNumMidBits 3 +#define kLenNumMidSymbols (1 << kLenNumMidBits) +#define kLenNumHighBits 8 +#define kLenNumHighSymbols (1 << kLenNumHighBits) + +#define LenChoice 0 +#define LenChoice2 (LenChoice + 1) +#define LenLow (LenChoice2 + 1) +#define LenMid (LenLow + (kNumPosStatesMax << kLenNumLowBits)) +#define LenHigh (LenMid + (kNumPosStatesMax << kLenNumMidBits)) +#define kNumLenProbs (LenHigh + kLenNumHighSymbols) + + +#define kNumStates 12 +#define kNumLitStates 7 + +#define kStartPosModelIndex 4 +#define kEndPosModelIndex 14 +#define kNumFullDistances (1 << (kEndPosModelIndex >> 1)) + +#define kNumPosSlotBits 6 +#define kNumLenToPosStates 4 + +#define kNumAlignBits 4 +#define kAlignTableSize (1 << kNumAlignBits) + +#define kMatchMinLen 2 + +#define IsMatch 0 +#define IsRep (IsMatch + (kNumStates << kNumPosBitsMax)) +#define IsRepG0 (IsRep + kNumStates) +#define IsRepG1 (IsRepG0 + kNumStates) +#define IsRepG2 (IsRepG1 + kNumStates) +#define IsRep0Long (IsRepG2 + kNumStates) +#define PosSlot (IsRep0Long + (kNumStates << kNumPosBitsMax)) +#define SpecPos (PosSlot + (kNumLenToPosStates << kNumPosSlotBits)) +#define Align (SpecPos + kNumFullDistances - kEndPosModelIndex) +#define LenCoder (Align + kAlignTableSize) +#define RepLenCoder (LenCoder + kNumLenProbs) +#define Literal (RepLenCoder + kNumLenProbs) + +#if Literal != LZMA_BASE_SIZE +StopCompilingDueBUG +#endif + +int LzmaDecodeProperties(CLzmaProperties *propsRes, const unsigned char *propsData, int size) +{ + unsigned char prop0; + if (size < LZMA_PROPERTIES_SIZE) + return LZMA_RESULT_DATA_ERROR; + prop0 = propsData[0]; + if (prop0 >= (9 * 5 * 5)) + return LZMA_RESULT_DATA_ERROR; + { + for (propsRes->pb = 0; prop0 >= (9 * 5); propsRes->pb++, prop0 -= (9 * 5)); + for (propsRes->lp = 0; prop0 >= 9; propsRes->lp++, prop0 -= 9); + propsRes->lc = prop0; + /* + unsigned char remainder = (unsigned char)(prop0 / 9); + propsRes->lc = prop0 % 9; + propsRes->pb = remainder / 5; + propsRes->lp = remainder % 5; + */ + } + + return LZMA_RESULT_OK; +} + +#define kLzmaStreamWasFinishedId (-1) + +int LzmaDecode(CLzmaDecoderState *vs, + const unsigned char *inStream, SizeT inSize, SizeT *inSizeProcessed, + unsigned char *outStream, SizeT outSize, SizeT *outSizeProcessed) +{ + CProb *p = vs->Probs; + SizeT nowPos = 0; + Byte previousByte = 0; + UInt32 posStateMask = (1 << (vs->Properties.pb)) - 1; + UInt32 literalPosMask = (1 << (vs->Properties.lp)) - 1; + int lc = vs->Properties.lc; + + + int state = 0; + UInt32 rep0 = 1, rep1 = 1, rep2 = 1, rep3 = 1; + int len = 0; + const Byte *Buffer; + const Byte *BufferLim; + UInt32 Range; + UInt32 Code; + + *inSizeProcessed = 0; + *outSizeProcessed = 0; + + { + UInt32 i; + UInt32 numProbs = Literal + ((UInt32)LZMA_LIT_SIZE << (lc + vs->Properties.lp)); + for (i = 0; i < numProbs; i++) + p[i] = kBitModelTotal >> 1; + } + + RC_INIT(inStream, inSize); + + + while(nowPos < outSize) + { + CProb *prob; + UInt32 bound; + int posState = (int)( + (nowPos + ) + & posStateMask); + + prob = p + IsMatch + (state << kNumPosBitsMax) + posState; + IfBit0(prob) + { + int symbol = 1; + UpdateBit0(prob) + prob = p + Literal + (LZMA_LIT_SIZE * + ((( + (nowPos + ) + & literalPosMask) << lc) + (previousByte >> (8 - lc)))); + + if (state >= kNumLitStates) + { + int matchByte; + matchByte = outStream[nowPos - rep0]; + do + { + int bit; + CProb *probLit; + matchByte <<= 1; + bit = (matchByte & 0x100); + probLit = prob + 0x100 + bit + symbol; + RC_GET_BIT2(probLit, symbol, if (bit != 0) break, if (bit == 0) break) + } + while (symbol < 0x100); + } + while (symbol < 0x100) + { + CProb *probLit = prob + symbol; + RC_GET_BIT(probLit, symbol) + } + previousByte = (Byte)symbol; + + outStream[nowPos++] = previousByte; + if (state < 4) state = 0; + else if (state < 10) state -= 3; + else state -= 6; + } + else + { + UpdateBit1(prob); + prob = p + IsRep + state; + IfBit0(prob) + { + UpdateBit0(prob); + rep3 = rep2; + rep2 = rep1; + rep1 = rep0; + state = state < kNumLitStates ? 0 : 3; + prob = p + LenCoder; + } + else + { + UpdateBit1(prob); + prob = p + IsRepG0 + state; + IfBit0(prob) + { + UpdateBit0(prob); + prob = p + IsRep0Long + (state << kNumPosBitsMax) + posState; + IfBit0(prob) + { + UpdateBit0(prob); + + if (nowPos == 0) + return LZMA_RESULT_DATA_ERROR; + + state = state < kNumLitStates ? 9 : 11; + previousByte = outStream[nowPos - rep0]; + outStream[nowPos++] = previousByte; + + continue; + } + else + { + UpdateBit1(prob); + } + } + else + { + UInt32 distance; + UpdateBit1(prob); + prob = p + IsRepG1 + state; + IfBit0(prob) + { + UpdateBit0(prob); + distance = rep1; + } + else + { + UpdateBit1(prob); + prob = p + IsRepG2 + state; + IfBit0(prob) + { + UpdateBit0(prob); + distance = rep2; + } + else + { + UpdateBit1(prob); + distance = rep3; + rep3 = rep2; + } + rep2 = rep1; + } + rep1 = rep0; + rep0 = distance; + } + state = state < kNumLitStates ? 8 : 11; + prob = p + RepLenCoder; + } + { + int numBits, offset; + CProb *probLen = prob + LenChoice; + IfBit0(probLen) + { + UpdateBit0(probLen); + probLen = prob + LenLow + (posState << kLenNumLowBits); + offset = 0; + numBits = kLenNumLowBits; + } + else + { + UpdateBit1(probLen); + probLen = prob + LenChoice2; + IfBit0(probLen) + { + UpdateBit0(probLen); + probLen = prob + LenMid + (posState << kLenNumMidBits); + offset = kLenNumLowSymbols; + numBits = kLenNumMidBits; + } + else + { + UpdateBit1(probLen); + probLen = prob + LenHigh; + offset = kLenNumLowSymbols + kLenNumMidSymbols; + numBits = kLenNumHighBits; + } + } + RangeDecoderBitTreeDecode(probLen, numBits, len); + len += offset; + } + + if (state < 4) + { + int posSlot; + state += kNumLitStates; + prob = p + PosSlot + + ((len < kNumLenToPosStates ? len : kNumLenToPosStates - 1) << + kNumPosSlotBits); + RangeDecoderBitTreeDecode(prob, kNumPosSlotBits, posSlot); + if (posSlot >= kStartPosModelIndex) + { + int numDirectBits = ((posSlot >> 1) - 1); + rep0 = (2 | ((UInt32)posSlot & 1)); + if (posSlot < kEndPosModelIndex) + { + rep0 <<= numDirectBits; + prob = p + SpecPos + rep0 - posSlot - 1; + } + else + { + numDirectBits -= kNumAlignBits; + do + { + RC_NORMALIZE + Range >>= 1; + rep0 <<= 1; + if (Code >= Range) + { + Code -= Range; + rep0 |= 1; + } + } + while (--numDirectBits != 0); + prob = p + Align; + rep0 <<= kNumAlignBits; + numDirectBits = kNumAlignBits; + } + { + int i = 1; + int mi = 1; + do + { + CProb *prob3 = prob + mi; + RC_GET_BIT2(prob3, mi, ; , rep0 |= i); + i <<= 1; + } + while(--numDirectBits != 0); + } + } + else + rep0 = posSlot; + if (++rep0 == (UInt32)(0)) + { + /* it's for stream version */ + len = kLzmaStreamWasFinishedId; + break; + } + } + + len += kMatchMinLen; + if (rep0 > nowPos) + return LZMA_RESULT_DATA_ERROR; + + + do + { + previousByte = outStream[nowPos - rep0]; + len--; + outStream[nowPos++] = previousByte; + } + while(len != 0 && nowPos < outSize); + } + } + RC_NORMALIZE; + + + *inSizeProcessed = (SizeT)(Buffer - inStream); + *outSizeProcessed = nowPos; + return LZMA_RESULT_OK; +} diff --git a/payloads/libpayload/liblzma/lzmadecode.h b/payloads/libpayload/liblzma/lzmadecode.h new file mode 100644 index 0000000..34c9f14 --- /dev/null +++ b/payloads/libpayload/liblzma/lzmadecode.h @@ -0,0 +1,67 @@ +/* + LzmaDecode.h + LZMA Decoder interface + + LZMA SDK 4.40 Copyright (c) 1999-2006 Igor Pavlov (2006-05-01) + http://www.7-zip.org/ + + LZMA SDK is licensed under two licenses: + 1) GNU Lesser General Public License (GNU LGPL) + 2) Common Public License (CPL) + It means that you can select one of these two licenses and + follow rules of that license. + + SPECIAL EXCEPTION: + Igor Pavlov, as the author of this code, expressly permits you to + statically or dynamically link your code (or bind by name) to the + interfaces of this file without subjecting your linked code to the + terms of the CPL or GNU LGPL. Any modifications or additions + to this file, however, are subject to the LGPL or CPL terms. +*/ + +#ifndef __LZMADECODE_H +#define __LZMADECODE_H + +typedef unsigned char Byte; +typedef unsigned short UInt16; +typedef unsigned int UInt32; +typedef UInt32 SizeT; + +#define CProb UInt16 + +#define LZMA_RESULT_OK 0 +#define LZMA_RESULT_DATA_ERROR 1 + + +#define LZMA_BASE_SIZE 1846 +#define LZMA_LIT_SIZE 768 + +#define LZMA_PROPERTIES_SIZE 5 + +typedef struct _CLzmaProperties +{ + int lc; + int lp; + int pb; +}CLzmaProperties; + +int LzmaDecodeProperties(CLzmaProperties *propsRes, const unsigned char *propsData, int size); + +#define LzmaGetNumProbs(Properties) (LZMA_BASE_SIZE + (LZMA_LIT_SIZE << ((Properties)->lc + (Properties)->lp))) + +#define kLzmaNeedInitId (-2) + +typedef struct _CLzmaDecoderState +{ + CLzmaProperties Properties; + CProb *Probs; + + +} CLzmaDecoderState; + + +int LzmaDecode(CLzmaDecoderState *vs, + const unsigned char *inStream, SizeT inSize, SizeT *inSizeProcessed, + unsigned char *outStream, SizeT outSize, SizeT *outSizeProcessed); + +#endif

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Re: [coreboot] [PATCH][RFC] A new way using a binary file to add-stage to a rom file on ARM
by Patrick Georgi 22 Jul '11

22 Jul '11

Am Freitag, den 22.07.2011, 20:25 +0800 schrieb Hamo: > The first and most important reason is the size of bootblock. As I say > in the last mail, the internal SRAM for holding the first sector of > NAND Flash is very small. For example, Samsung 2410 CPU only has a 4K > internal SRAM. 4K is generally more than what the x86 bootblock uses. > Second, ARM CPU is not as powerful as X86. The decompress function > will need much more time than that on X86. The bootblock also doesn't decompress. That's what the romstage (executed from ROM) does after RAM is alive. Patrick -- Patrick Georgi Fachbereich SINA-Entwicklung Geschäftsbereich Hochsicherheit secunet Security Networks AG Mergenthalerallee 77 65760 Eschborn, Germany Telefon +49 201 54 54-3610 Telefax +49 201 54 54-1325 Patrick.Georgi(a)secunet.com www.secunet.com Sitz: Kronprinzenstraße 30, 45128 Essen Amtsgericht Essen HRB 13615 Vorstand: Dr. Rainer Baumgart (Vors.), Thomas Koelzer, Thomas Pleines Aufsichtsratsvorsitzender: Dr. Karsten Ottenberg

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Re: [coreboot] [PATCH][RFC] A new way using a binary file to add-stage to a rom file on ARM
by Hamo 22 Jul '11

22 Jul '11

> Thanks, if ram is setup in the bootblock, you should be able to > decompress and copy ramstage to memory to run it. What is the issue > there? There are several reasons for this: The first and most important reason is the size of bootblock. As I say in the last mail, the internal SRAM for holding the first sector of NAND Flash is very small. For example, Samsung 2410 CPU only has a 4K internal SRAM. Second, ARM CPU is not as powerful as X86. The decompress function will need much more time than that on X86. Is my code for using a binary file to add stage to the romfile fine? If so, I will move forward to the ramstage. Thanks, Hamo

1 0

Patch set updated: 9e6f6b5 split CBFS support into shared core and extended functions
by Patrick Georgi 22 Jul '11

22 Jul '11

Patrick Georgi (patrick(a)georgi-clan.de) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/114 -gerrit commit 9e6f6b5a4d1b071b8fd3f909dd85a7a6cc5b0113 Author: Patrick Georgi <patrick.georgi(a)secunet.com> Date: Thu Jul 21 15:11:40 2011 +0200 split CBFS support into shared core and extended functions The core is data structures and basic file finding capabilities, while option ROM handling, and loading stages and payloads is "extended". The core is rewritten to be BSD-l (its header already was), so can be copied to libpayload verbatim. It's also more robust in finding files in corrupted images, eg. after partial erase or update. Change-Id: Ic6923debf8bdf3c67c75746d3b31f3addab3dd74 Signed-off-by: Patrick Georgi <patrick.georgi(a)secunet.com> --- src/include/cbfs.h | 123 +------------------------------- src/include/cbfs_core.h | 180 +++++++++++++++++++++++++++++++++++++++++++++++ src/lib/cbfs.c | 120 ++++---------------------------- src/lib/cbfs_core.c | 174 +++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 370 insertions(+), 227 deletions(-) diff --git a/src/include/cbfs.h b/src/include/cbfs.h index c1c1e33..1483177 100644 --- a/src/include/cbfs.h +++ b/src/include/cbfs.h @@ -49,130 +49,13 @@ #ifndef _CBFS_H_ #define _CBFS_H_ +#include "cbfs_core.h" #include <boot/coreboot_tables.h> -/** These are standard values for the known compression - alogrithms that coreboot knows about for stages and - payloads. Of course, other CBFS users can use whatever - values they want, as long as they understand them. */ -#define CBFS_COMPRESS_NONE 0 -#define CBFS_COMPRESS_LZMA 1 - -/** These are standard component types for well known - components (i.e - those that coreboot needs to consume. - Users are welcome to use any other value for their - components */ - -#define CBFS_TYPE_STAGE 0x10 -#define CBFS_TYPE_PAYLOAD 0x20 -#define CBFS_TYPE_OPTIONROM 0x30 -#define CBFS_TYPE_BOOTSPLASH 0x40 -#define CBFS_TYPE_RAW 0x50 -#define CBFS_TYPE_VSA 0x51 -#define CBFS_TYPE_MBI 0x52 -#define CBFS_TYPE_MICROCODE 0x53 -#define CBFS_COMPONENT_CMOS_DEFAULT 0xaa -#define CBFS_COMPONENT_CMOS_LAYOUT 0x01aa - - -/** this is the master cbfs header - it need to be - located somewhere in the bootblock. Where it - actually lives is up to coreboot. A pointer to - this header will live at 0xFFFFFFFc, so we can - easily find it. */ - -#define CBFS_HEADER_MAGIC 0x4F524243 -#define CBFS_HEADPTR_ADDR 0xFFFFFFFc -#define VERSION1 0x31313131 - -struct cbfs_header { - u32 magic; - u32 version; - u32 romsize; - u32 bootblocksize; - u32 align; - u32 offset; - u32 pad[2]; -} __attribute__((packed)); - -/** This is a component header - every entry in the CBFS - will have this header. - - This is how the component is arranged in the ROM: - - -------------- <- 0 - component header - -------------- <- sizeof(struct component) - component name - -------------- <- offset - data - ... - -------------- <- offset + len -*/ - -#define CBFS_FILE_MAGIC "LARCHIVE" - -struct cbfs_file { - char magic[8]; - u32 len; - u32 type; - u32 checksum; - u32 offset; -} __attribute__((packed)); - -/*** Component sub-headers ***/ - -/* Following are component sub-headers for the "standard" - component types */ - -/** This is the sub-header for stage components. Stages are - loaded by coreboot during the normal boot process */ - -struct cbfs_stage { - u32 compression; /** Compression type */ - u64 entry; /** entry point */ - u64 load; /** Where to load in memory */ - u32 len; /** length of data to load */ - u32 memlen; /** total length of object in memory */ -} __attribute__((packed)); - -/** this is the sub-header for payload components. Payloads - are loaded by coreboot at the end of the boot process */ - -struct cbfs_payload_segment { - u32 type; - u32 compression; - u32 offset; - u64 load_addr; - u32 len; - u32 mem_len; -} __attribute__((packed)); - -struct cbfs_payload { - struct cbfs_payload_segment segments; -}; - -#define PAYLOAD_SEGMENT_CODE 0x45444F43 -#define PAYLOAD_SEGMENT_DATA 0x41544144 -#define PAYLOAD_SEGMENT_BSS 0x20535342 -#define PAYLOAD_SEGMENT_PARAMS 0x41524150 -#define PAYLOAD_SEGMENT_ENTRY 0x52544E45 - -struct cbfs_optionrom { - u32 compression; - u32 len; -} __attribute__((packed)); - -#define CBFS_NAME(_c) (((char *) (_c)) + sizeof(struct cbfs_file)) -#define CBFS_SUBHEADER(_p) ( (void *) ((((u8 *) (_p)) + ntohl((_p)->offset))) ) - -void * cbfs_load_payload(struct lb_memory *lb_mem, const char *name); -void * cbfs_load_stage(const char *name); +void *cbfs_load_payload(struct lb_memory *lb_mem, const char *name); +void *cbfs_load_stage(const char *name); int cbfs_execute_stage(const char *name); -void * cbfs_get_file(const char *name); void *cbfs_load_optionrom(u16 vendor, u16 device, void * dest); int run_address(void *f); -struct cbfs_file *cbfs_find(const char *name); -void *cbfs_find_file(const char *name, int type); #endif diff --git a/src/include/cbfs_core.h b/src/include/cbfs_core.h new file mode 100644 index 0000000..fbe0081 --- /dev/null +++ b/src/include/cbfs_core.h @@ -0,0 +1,180 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008 Jordan Crouse <jordan(a)cosmicpenguin.net> + * + * This file is dual-licensed. You can choose between: + * - The GNU GPL, version 2, as published by the Free Software Foundation + * - The revised BSD license (without advertising clause) + * + * --------------------------------------------------------------------------- + * 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; version 2 of the License. + * + * 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., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA + * --------------------------------------------------------------------------- + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * --------------------------------------------------------------------------- + */ + +#ifndef _CBFS_CORE_H_ +#define _CBFS_CORE_H_ + +/** These are standard values for the known compression + alogrithms that coreboot knows about for stages and + payloads. Of course, other CBFS users can use whatever + values they want, as long as they understand them. */ + +#define CBFS_COMPRESS_NONE 0 +#define CBFS_COMPRESS_LZMA 1 + +/** These are standard component types for well known + components (i.e - those that coreboot needs to consume. + Users are welcome to use any other value for their + components */ + +#define CBFS_TYPE_STAGE 0x10 +#define CBFS_TYPE_PAYLOAD 0x20 +#define CBFS_TYPE_OPTIONROM 0x30 +#define CBFS_TYPE_BOOTSPLASH 0x40 +#define CBFS_TYPE_RAW 0x50 +#define CBFS_TYPE_VSA 0x51 +#define CBFS_TYPE_MBI 0x52 +#define CBFS_TYPE_MICROCODE 0x53 +#define CBFS_COMPONENT_CMOS_DEFAULT 0xaa +#define CBFS_COMPONENT_CMOS_LAYOUT 0x01aa + + +/** this is the master cbfs header - it need to be + located somewhere in the bootblock. Where it + actually lives is up to coreboot. A pointer to + this header will live at 0xFFFFFFFc, so we can + easily find it. */ + +#define CBFS_HEADER_MAGIC 0x4F524243 +#define CBFS_HEADPTR_ADDR 0xFFFFFFFc +#define VERSION1 0x31313131 + +struct cbfs_header { + uint32_t magic; + uint32_t version; + uint32_t romsize; + uint32_t bootblocksize; + uint32_t align; + uint32_t offset; + uint32_t pad[2]; +} __attribute__((packed)); + +/** This is a component header - every entry in the CBFS + will have this header. + + This is how the component is arranged in the ROM: + + -------------- <- 0 + component header + -------------- <- sizeof(struct component) + component name + -------------- <- offset + data + ... + -------------- <- offset + len +*/ + +#define CBFS_FILE_MAGIC "LARCHIVE" + +struct cbfs_file { + char magic[8]; + uint32_t len; + uint32_t type; + uint32_t checksum; + uint32_t offset; +} __attribute__((packed)); + +/*** Component sub-headers ***/ + +/* Following are component sub-headers for the "standard" + component types */ + +/** This is the sub-header for stage components. Stages are + loaded by coreboot during the normal boot process */ + +struct cbfs_stage { + uint32_t compression; /** Compression type */ + uint64_t entry; /** entry point */ + uint64_t load; /** Where to load in memory */ + uint32_t len; /** length of data to load */ + uint32_t memlen; /** total length of object in memory */ +} __attribute__((packed)); + +/** this is the sub-header for payload components. Payloads + are loaded by coreboot at the end of the boot process */ + +struct cbfs_payload_segment { + uint32_t type; + uint32_t compression; + uint32_t offset; + uint64_t load_addr; + uint32_t len; + uint32_t mem_len; +} __attribute__((packed)); + +struct cbfs_payload { + struct cbfs_payload_segment segments; +}; + +#define PAYLOAD_SEGMENT_CODE 0x45444F43 +#define PAYLOAD_SEGMENT_DATA 0x41544144 +#define PAYLOAD_SEGMENT_BSS 0x20535342 +#define PAYLOAD_SEGMENT_PARAMS 0x41524150 +#define PAYLOAD_SEGMENT_ENTRY 0x52544E45 + +struct cbfs_optionrom { + uint32_t compression; + uint32_t len; +} __attribute__((packed)); + +#define CBFS_NAME(_c) (((char *) (_c)) + sizeof(struct cbfs_file)) +#define CBFS_SUBHEADER(_p) ( (void *) ((((uint8_t *) (_p)) + ntohl((_p)->offset))) ) + +/* returns pointer to file inside CBFS or NULL */ +struct cbfs_file *cbfs_find(const char *name); + +/* returns pointer to file data inside CBFS */ +void *cbfs_get_file(const char *name); + +/* returns pointer to file data inside CBFS after if type is correct */ +void *cbfs_find_file(const char *name, int type); + +/* returns 0 on success, -1 on failure */ +int cbfs_decompress(int algo, void *src, void *dst, int len); +#endif + diff --git a/src/lib/cbfs.c b/src/lib/cbfs.c index 7cfa3e2..0071219 100644 --- a/src/lib/cbfs.c +++ b/src/lib/cbfs.c @@ -24,85 +24,19 @@ #include <lib.h> #include <arch/byteorder.h> +// use CBFS core +#ifndef __SMM__ +#define CBFS_CORE_WITH_LZMA +#endif +#define phys_to_virt(x) x +#define virt_to_phys(x) x +#define ERROR(x...) printk(BIOS_ERR, x) +#define LOG(x...) printk(BIOS_INFO, x) +// FIXME: romstart/romend are fine on x86, but not on ARM +#define romstart() 0xffffffff +#define romend() 0 -static int cbfs_check_magic(struct cbfs_file *file) -{ - return !strcmp(file->magic, CBFS_FILE_MAGIC) ? 1 : 0; -} - -static struct cbfs_header *cbfs_master_header(void) -{ - struct cbfs_header *header; - - void *ptr = (void *)*((unsigned long *) CBFS_HEADPTR_ADDR); - printk(BIOS_SPEW, "Check CBFS header at %p\n", ptr); - header = (struct cbfs_header *) ptr; - - printk(BIOS_SPEW, "magic is %08x\n", ntohl(header->magic)); - if (ntohl(header->magic) != CBFS_HEADER_MAGIC) { - printk(BIOS_ERR, "ERROR: No valid CBFS header found!\n"); - if (header->magic == 0xffffffff) { - printk(BIOS_ERR, "Maybe the ROM isn't entirely mapped yet?\n" - "See (and report to) http://www.coreboot.org/Infrastructure_Projects#CBFS\n"); - } - return NULL; - } - - printk(BIOS_SPEW, "Found CBFS header at %p\n", ptr); - return header; -} - -struct cbfs_file *cbfs_find(const char *name) -{ - struct cbfs_header *header = cbfs_master_header(); - unsigned long offset; - - if (header == NULL) - return NULL; - offset = 0 - ntohl(header->romsize) + ntohl(header->offset); - - int align= ntohl(header->align); - - while(1) { - struct cbfs_file *file = (struct cbfs_file *) offset; - if (!cbfs_check_magic(file)) return NULL; - printk(BIOS_SPEW, "Check %s\n", CBFS_NAME(file)); - if (!strcmp(CBFS_NAME(file), name)) - return file; - - int flen = ntohl(file->len); - int foffset = ntohl(file->offset); - printk(BIOS_SPEW, "CBFS: follow chain: %p + %x + %x + align -> ", (void *)offset, foffset, flen); - - unsigned long oldoffset = offset; - offset = ALIGN(offset + foffset + flen, align); - printk(BIOS_SPEW, "%p\n", (void *)offset); - if (offset <= oldoffset) return NULL; - - if (offset < 0xFFFFFFFF - ntohl(header->romsize)) - return NULL; - } -} - -void *cbfs_find_file(const char *name, int type) -{ - struct cbfs_file *file = cbfs_find(name); - - if (file == NULL) { - printk(BIOS_INFO, "CBFS: Could not find file %s\n", - name); - return NULL; - } - - if (ntohl(file->type) != type) { - printk(BIOS_INFO, "CBFS: File %s is of type %x instead of" - "type %x\n", name, file->type, type); - - return NULL; - } - - return (void *) CBFS_SUBHEADER(file); -} +#include "cbfs_core.c" #ifndef __SMM__ static inline int tohex4(unsigned int c) @@ -118,34 +52,6 @@ static void tohex16(unsigned int val, char* dest) dest[3]=tohex4(val & 0xf); } -/** - * Decompression wrapper for CBFS - * @param algo - * @param src - * @param dst - * @param len - * @return 0 on success, -1 on failure - */ -static int cbfs_decompress(int algo, void *src, void *dst, int len) -{ - switch(algo) { - case CBFS_COMPRESS_NONE: - memcpy(dst, src, len); - return 0; - - case CBFS_COMPRESS_LZMA: - if (!ulzma(src, dst)) { - printk(BIOS_ERR, "CBFS: LZMA decompression failed!\n"); - return -1; - } - return 0; - default: - printk(BIOS_INFO, "CBFS: Unknown compression type %d\n", algo); - return -1; - } -} - - void *cbfs_load_optionrom(u16 vendor, u16 device, void * dest) { char name[17]="pciXXXX,XXXX.rom"; diff --git a/src/lib/cbfs_core.c b/src/lib/cbfs_core.c new file mode 100644 index 0000000..aa64bd7 --- /dev/null +++ b/src/lib/cbfs_core.c @@ -0,0 +1,174 @@ +/* + * This file is part of the libpayload project. + * + * Copyright (C) 2011 secunet Security Networks AG + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* The CBFS core requires a couple of #defines or functions to adapt it to the target environment: + * + * CBFS_CORE_WITH_LZMA (must be #define) + * if defined, ulzma() must exist for decompression of data streams + * + * phys_to_virt(x), virt_to_phys(x) + * translate physical addresses to virtual and vice versa + * can be idempotent if no mapping is necessary. + * + * ERROR(x...) + * print an error message x (in printf format) + * + * LOG(x...) + * print a debug message x (in printf format) + * + * romstart() + * returns the start address of the ROM image, or 0xffffffff if ROM is + * top-aligned. This is a physical address. + * + * romend() + * returns the highest address of the ROM image + 1, for use if + * romstart() == 0xffffffff. This is a physical address. + */ + +#include <cbfs_core.h> + + +/* returns pointer to master header or 0xffffffff if not found */ +static struct cbfs_header *get_cbfs_header(void) +{ + struct cbfs_header *header; + + /* find header */ + if (romstart() == 0xffffffff) { + header = (struct cbfs_header*)phys_to_virt(*(struct cbfs_header**)phys_to_virt(romend() + CBFS_HEADPTR_ADDR)); + } else { + // FIXME: where's the master header on ARM (our current bottom-aligned platform)? + header = NULL; + } + if (CBFS_HEADER_MAGIC != ntohl(header->magic)) { + ERROR("Could not find valid CBFS master header at %p: %x vs %x.\n", header, CBFS_HEADER_MAGIC, ntohl(header->magic)); + if (header->magic == 0xffffffff) { + ERROR("Maybe ROM is not mapped properly?\n"); + } + return (void*)0xffffffff; + } + return header; +} + +// by must be power-of-two +#define CBFS_ALIGN(val, by) (typeof(val))((uint32_t)(val + by - 1) & (uint32_t)~(by - 1)) +#define CBFS_ALIGN_UP(val, by) CBFS_ALIGN(val + 1, by) + +/* public API starts here*/ +struct cbfs_file *cbfs_find(const char *name) +{ + struct cbfs_header *header = get_cbfs_header(); + if (header == (void*)0xffffffff) return NULL; + + LOG("Searching for %s\n", name); + + void *data, *dataend, *origdata; + /* find first entry */ + if (romstart() == 0xffffffff) { + data = (void*)phys_to_virt(romend()) - ntohl(header->romsize) + ntohl(header->offset); + dataend = (void*)phys_to_virt(romend()); + } else { + data = (void*)phys_to_virt(romstart()) + ntohl(header->offset); + dataend = (void*)phys_to_virt(romstart()) + ntohl(header->romsize); + } + + int align = ntohl(header->align); + + origdata = data; + while ((data < (dataend - 1)) && (data >= origdata)) { + struct cbfs_file *file = data; + if (memcmp(CBFS_FILE_MAGIC, file->magic, strlen(CBFS_FILE_MAGIC)) != 0) { + // no file header found. corruption? + // proceed in aligned steps to resynchronize + LOG("No file header found at %p, searching for header\n", data); + data = phys_to_virt(CBFS_ALIGN_UP(virt_to_phys(data), align)); + continue; + } + LOG("Check %s\n", CBFS_NAME(file)); + if (strcmp(CBFS_NAME(file), name) == 0) { + return file; + } + void *olddata = data; + data = phys_to_virt(CBFS_ALIGN(virt_to_phys(data) + ntohl(file->len) + ntohl(file->offset), align)); + if (olddata > data) { + LOG("Something is wrong here. File chain moved from %p to %p\n", olddata, data); + return NULL; + } + } + return NULL; +} + +void *cbfs_get_file(const char *name) +{ + struct cbfs_file *file = cbfs_find(name); + + if (file == NULL) { + ERROR("Could not find file '%s'.\n", name); + return NULL; + } + + return (void*)CBFS_SUBHEADER(file); +} + +void *cbfs_find_file(const char *name, int type) +{ + struct cbfs_file *file = cbfs_find(name); + + if (file == NULL) { + ERROR("Could not find file '%s'.\n", name); + return NULL; + } + + if (ntohl(file->type) != type) { + ERROR("File '%s' is of type %x, but we requested %x.\n", name, ntohl(file->type), type); + return NULL; + } + + return (void*)CBFS_SUBHEADER(file); +} + +int cbfs_decompress(int algo, void *src, void *dst, int len) +{ + switch (algo) { + case CBFS_COMPRESS_NONE: + memcpy(dst, src, len); + return 0; +#ifdef CBFS_CORE_WITH_LZMA + case CBFS_COMPRESS_LZMA: + if (ulzma(src, dst) != 0) { + return 0; + } + return -1; +#endif + default: + ERROR("tried to decompress %d bytes with algorithm #%x, but that algorithm id is unsupported.\n", len, algo); + return -1; + } +} +

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coreboot July 2011