Many experimental and small design house SBC's use Coreboot; here we add linux
support for it. Platform drivers on generic processors such as Geode or C7 may
interrogate Coreboot for the vendor and model.
Removed the conditional compilation and non-kernel parts.
Split into architecture indpendent and machine-specific parts as per Andres'
comment.
Signed-off-by: Philip Prindeville <[email protected]>
Acked-by: Patrick Georgi <[email protected]>
---
Taken from the coreboot project, largely unmodified.
diff --git a/include/linux/libpayload/coreboot_tables.h
b/include/linux/libpayload/coreboot_tables.h
new file mode 100644
index 0000000..ab1a652
--- /dev/null
+++ b/include/linux/libpayload/coreboot_tables.h
@@ -0,0 +1,233 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2008 Advanced Micro Devices, Inc.
+ * Copyright (C) 2011 Philip Prindeville, Redfish Solutions, LLC.
+ *
+ * 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 _COREBOOT_TABLES_H
+#define _COREBOOT_TABLES_H
+
+#include <asm-generic/int-ll64.h>
+
+struct cbuint64 {
+ u32 lo;
+ u32 hi;
+};
+
+struct cb_header {
+ u8 signature[4];
+ u32 header_bytes;
+ u32 header_checksum;
+ u32 table_bytes;
+ u32 table_checksum;
+ u32 table_entries;
+};
+
+struct cb_record {
+ u32 tag;
+ u32 size;
+};
+
+#define CB_TAG_UNUSED 0x0000
+#define CB_TAG_MEMORY 0x0001
+
+struct cb_memory_range {
+ struct cbuint64 start;
+ struct cbuint64 size;
+ u32 type;
+};
+
+#define CB_MEM_RAM 1
+#define CB_MEM_RESERVED 2
+#define CB_MEM_TABLE 16
+
+struct cb_memory {
+ u32 tag;
+ u32 size;
+ struct cb_memory_range map[0];
+};
+
+#define CB_TAG_HWRPB 0x0002
+
+struct cb_hwrpb {
+ u32 tag;
+ u32 size;
+ u64 hwrpb;
+};
+
+#define CB_TAG_MAINBOARD 0x0003
+
+struct cb_mainboard {
+ u32 tag;
+ u32 size;
+ u8 vendor_idx;
+ u8 part_number_idx;
+ u8 strings[0];
+};
+
+#define CB_TAG_VERSION 0x0004
+#define CB_TAG_EXTRA_VERSION 0x0005
+#define CB_TAG_BUILD 0x0006
+#define CB_TAG_COMPILE_TIME 0x0007
+#define CB_TAG_COMPILE_BY 0x0008
+#define CB_TAG_COMPILE_HOST 0x0009
+#define CB_TAG_COMPILE_DOMAIN 0x000a
+#define CB_TAG_COMPILER 0x000b
+#define CB_TAG_LINKER 0x000c
+#define CB_TAG_ASSEMBLER 0x000d
+
+struct cb_string {
+ u32 tag;
+ u32 size;
+ u8 string[0];
+};
+
+#define CB_TAG_SERIAL 0x000f
+
+struct cb_serial {
+ u32 tag;
+ u32 size;
+ u16 ioport;
+};
+
+#define CB_TAG_CONSOLE 0x00010
+
+struct cb_console {
+ u32 tag;
+ u32 size;
+ u16 type;
+};
+
+#define CB_TAG_CONSOLE_SERIAL8250 0
+#define CB_TAG_CONSOLE_VGA 1 // OBSOLETE
+#define CB_TAG_CONSOLE_BTEXT 2 // OBSOLETE
+#define CB_TAG_CONSOLE_LOGBUF 3
+#define CB_TAG_CONSOLE_SROM 4 // OBSOLETE
+#define CB_TAG_CONSOLE_EHCI 5
+
+#define CB_TAG_FORWARD 0x00011
+
+struct cb_forward {
+ u32 tag;
+ u32 size;
+ u64 forward;
+};
+
+#define CB_TAG_FRAMEBUFFER 0x0012
+struct cb_framebuffer {
+ u32 tag;
+ u32 size;
+
+ u64 physical_address;
+ u32 x_resolution;
+ u32 y_resolution;
+ u32 bytes_per_line;
+ u8 bits_per_pixel;
+ u8 red_mask_pos;
+ u8 red_mask_size;
+ u8 green_mask_pos;
+ u8 green_mask_size;
+ u8 blue_mask_pos;
+ u8 blue_mask_size;
+ u8 reserved_mask_pos;
+ u8 reserved_mask_size;
+};
+
+#define CB_TAG_CMOS_OPTION_TABLE 0x00c8
+struct cb_cmos_option_table {
+ u32 tag;
+ u32 size;
+ u32 header_length;
+};
+
+#define CB_TAG_OPTION 0x00c9
+#define CMOS_MAX_NAME_LENGTH 32
+struct cb_cmos_entries {
+ u32 tag;
+ u32 size;
+ u32 bit;
+ u32 length;
+ u32 config;
+ u32 config_id;
+ u8 name[CMOS_MAX_NAME_LENGTH];
+};
+
+
+#define CB_TAG_OPTION_ENUM 0x00ca
+#define CMOS_MAX_TEXT_LENGTH 32
+struct cb_cmos_enums {
+ u32 tag;
+ u32 size;
+ u32 config_id;
+ u32 value;
+ u8 text[CMOS_MAX_TEXT_LENGTH];
+};
+
+#define CB_TAG_OPTION_DEFAULTS 0x00cb
+#define CMOS_IMAGE_BUFFER_SIZE 128
+struct cb_cmos_defaults {
+ u32 tag;
+ u32 size;
+ u32 name_length;
+ u8 name[CMOS_MAX_NAME_LENGTH];
+ u8 default_set[CMOS_IMAGE_BUFFER_SIZE];
+};
+
+#define CB_TAG_OPTION_CHECKSUM 0x00cc
+#define CHECKSUM_NONE 0
+#define CHECKSUM_PCBIOS 1
+struct cb_cmos_checksum {
+ u32 tag;
+ u32 size;
+ u32 range_start;
+ u32 range_end;
+ u32 location;
+ u32 type;
+};
+
+/* Helpful macros */
+
+#define MEM_RANGE_COUNT(_rec) \
+ (((_rec)->size - sizeof(*(_rec))) / sizeof((_rec)->map[0]))
+
+#define MEM_RANGE_PTR(_rec, _idx) \
+ (((u8 *) (_rec)) + sizeof(*(_rec)) \
+ + (sizeof((_rec)->map[0]) * (_idx)))
+
+#define MB_VENDOR_STRING(_mb) \
+ (((unsigned char *) ((_mb)->strings)) + (_mb)->vendor_idx)
+
+#define MB_PART_STRING(_mb) \
+ (((unsigned char *) ((_mb)->strings)) + (_mb)->part_number_idx)
+
+#define UNPACK_CB64(_in) \
+ ( (((u64) _in.hi) << 32) | _in.lo )
+
+extern int get_coreboot_info(struct sysinfo_t *info);
+extern int cb_parse_header(void *addr, void *end, struct sysinfo_t *info);
+
+#endif
diff --git a/include/linux/libpayload/libpayload.h
b/include/linux/libpayload/libpayload.h
new file mode 100644
index 0000000..e2a4939
--- /dev/null
+++ b/include/linux/libpayload/libpayload.h
@@ -0,0 +1,48 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2008 Advanced Micro Devices, Inc.
+ * Copyright (C) 2011 Philip Prindeville, Redfish Solutions, LLC.
+ *
+ * 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 _LIBPAYLOAD_H
+#define _LIBPAYLOAD_H
+
+#include <linux/types.h>
+#include <linux/unistd.h>
+#include <linux/string.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/printk.h>
+#include <linux/mm.h>
+#include <linux/highmem.h>
+
+#include <asm/io.h>
+#include <asm/page.h>
+#include <asm/checksum.h>
+
+#define ipchksum(start, len) ip_compute_csum(start, len)
+
+#endif
diff --git a/include/linux/libpayload/sysinfo.h
b/include/linux/libpayload/sysinfo.h
new file mode 100644
index 0000000..43e3048
--- /dev/null
+++ b/include/linux/libpayload/sysinfo.h
@@ -0,0 +1,67 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2008 Advanced Micro Devices, Inc.
+ * Copyright (C) 2011 Philip Prindeville, Redfish Solutions, LLC.
+ *
+ * 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 _SYSINFO_H
+#define _SYSINFO_H
+
+/* Allow a maximum of 16 memory range definitions. */
+#define SYSINFO_MAX_MEM_RANGES 16
+
+struct sysinfo_t {
+ unsigned int cpu_khz;
+ unsigned short ser_ioport;
+ unsigned long ser_base; // for mmapped serial
+
+ int n_memranges;
+
+ struct memrange {
+ unsigned long long base;
+ unsigned long long size;
+ unsigned int type;
+ } memrange[SYSINFO_MAX_MEM_RANGES];
+
+ struct cb_cmos_option_table *option_table;
+ u32 cmos_range_start;
+ u32 cmos_range_end;
+ u32 cmos_checksum_location;
+
+ struct cb_framebuffer *framebuffer;
+
+ unsigned long *mbtable; /** Pointer to the multiboot table */
+
+ struct cb_header *header;
+ struct cb_mainboard *mainboard;
+};
+
+extern struct sysinfo_t lib_sysinfo;
+extern int lib_get_sysinfo(void);
+
+#endif
+
diff --git a/lib/Kconfig b/lib/Kconfig
index 6c695ff..172c721 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -91,6 +91,8 @@ config AUDIT_GENERIC
depends on AUDIT && !AUDIT_ARCH
default y
+source "lib/libpayload/Kconfig"
+
#
# compression support is select'ed if needed
#
diff --git a/lib/Makefile b/lib/Makefile
index 15f7bb6..5af01ee 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -72,6 +72,7 @@ obj-$(CONFIG_BCH) += bch.o
obj-$(CONFIG_LZO_COMPRESS) += lzo/
obj-$(CONFIG_LZO_DECOMPRESS) += lzo/
obj-$(CONFIG_XZ_DEC) += xz/
+obj-$(CONFIG_LIBPAYLOAD) += libpayload/
obj-$(CONFIG_RAID6_PQ) += raid6/
lib-$(CONFIG_DECOMPRESS_GZIP) += decompress_inflate.o
diff --git a/lib/libpayload/Kconfig b/lib/libpayload/Kconfig
new file mode 100644
index 0000000..89c0fd8
--- /dev/null
+++ b/lib/libpayload/Kconfig
@@ -0,0 +1,5 @@
+config LIBPAYLOAD
+ bool "Libpayload support"
+ depends on X86
+ help
+ Libpayload support for locating coreboot tables.
diff --git a/lib/libpayload/Makefile b/lib/libpayload/Makefile
new file mode 100644
index 0000000..d65f5d4
--- /dev/null
+++ b/lib/libpayload/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_LIBPAYLOAD) += coreboot.o sysinfo.o coreboot_x86.o
diff --git a/lib/libpayload/coreboot.c b/lib/libpayload/coreboot.c
new file mode 100644
index 0000000..e1937e6
--- /dev/null
+++ b/lib/libpayload/coreboot.c
@@ -0,0 +1,213 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2008 Advanced Micro Devices, Inc.
+ * Copyright (C) 2009 coresystems GmbH
+ * Copyright (C) 2011 Philip Prindeville, Redfish Solutions, LLC.
+ *
+ * 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 <linux/libpayload/libpayload.h>
+#include <linux/libpayload/sysinfo.h>
+#include <linux/libpayload/coreboot_tables.h>
+
+#include <linux/highmem.h>
+#include <asm/page.h>
+
+/*
+ * Some of this is x86 specific, and the rest of it is generic. Right now,
+ * since we only support x86, we'll avoid trying to make lots of infrastructure
+ * we don't need. If in the future, we want to use coreboot on some other
+ * architecture, then take out the generic parsing code and move it elsewhere.
+ */
+
+/* === Parsing code === */
+/* This is the generic parsing code. */
+
+#define page_base(addr) ((typeof(addr)) (((uintptr_t)(addr) &
PAGE_MASK)))
+#define page_offset(addr) (((uintptr_t)(addr) & ~PAGE_MASK))
+
+static void cb_parse_memory(unsigned char *ptr, struct sysinfo_t *info)
+{
+ struct cb_memory *mem = (struct cb_memory *)ptr;
+ int count = MEM_RANGE_COUNT(mem);
+ int i;
+
+ if (count > SYSINFO_MAX_MEM_RANGES)
+ count = SYSINFO_MAX_MEM_RANGES;
+
+ info->n_memranges = 0;
+
+ for (i = 0; i < count; i++) {
+ struct cb_memory_range *range =
+ (struct cb_memory_range *)MEM_RANGE_PTR(mem, i);
+
+ info->memrange[info->n_memranges].base =
+ UNPACK_CB64(range->start);
+
+ info->memrange[info->n_memranges].size =
+ UNPACK_CB64(range->size);
+
+ info->memrange[info->n_memranges].type = range->type;
+
+ info->n_memranges++;
+ }
+}
+
+static void cb_parse_serial(unsigned char *ptr, struct sysinfo_t *info)
+{
+ struct cb_serial *ser = (struct cb_serial *)ptr;
+ info->ser_ioport = ser->ioport;
+}
+
+static void cb_parse_optiontable(unsigned char *ptr, struct sysinfo_t *info)
+{
+ info->option_table = (struct cb_cmos_option_table *)ptr;
+}
+
+static void cb_parse_checksum(unsigned char *ptr, struct sysinfo_t *info)
+{
+ struct cb_cmos_checksum *cmos_cksum = (struct cb_cmos_checksum *)ptr;
+ info->cmos_range_start = cmos_cksum->range_start;
+ info->cmos_range_end = cmos_cksum->range_end;
+ info->cmos_checksum_location = cmos_cksum->location;
+}
+
+static void cb_parse_framebuffer(unsigned char *ptr, struct sysinfo_t *info)
+{
+ info->framebuffer = (struct cb_framebuffer *)ptr;
+}
+
+int cb_parse_header(void *addr, void *end, struct sysinfo_t *info)
+{
+ struct cb_header *header;
+ unsigned char *ptr = addr;
+ void *forward;
+ int i;
+
+ for (i = 0; (void *)ptr < end; i += 16, ptr += 16) {
+ header = (struct cb_header *)ptr;
+ if (!strncmp((const char *)header->signature, "LBIO", 4))
+ break;
+ }
+
+ /* We walked the entire space and didn't find anything. */
+ if ((void *)ptr >= end)
+ return -1;
+
+ printk(KERN_DEBUG "coreboot: signature %.4s at %p\n",
+ header->signature, header);
+
+ if (!header->table_bytes)
+ return 0;
+
+ /* Make sure the checksums match. */
+ if (ipchksum(header, sizeof(*header)) != 0)
+ return -1;
+
+ printk(KERN_DEBUG "coreboot: header checksum verified\n");
+
+ if (ipchksum((char *)header + sizeof(*header),
+ header->table_bytes) != header->table_checksum)
+ return -1;
+
+ printk(KERN_DEBUG "coreboot: table checksum verified\n");
+
+ info->header = header;
+
+ /* Now, walk the tables. */
+ ptr += header->header_bytes;
+
+ printk(KERN_DEBUG "coreboot: table start %p\n", ptr);
+
+ for (i = 0; i < header->table_entries; i++) {
+ struct cb_record *rec = (struct cb_record *)ptr;
+
+ printk(KERN_DEBUG "coreboot: entry[%u] @ %p type %04x\n",
+ i, rec, rec->tag);
+
+ /* We only care about a few tags here (maybe more later). */
+ switch (rec->tag) {
+ case CB_TAG_FORWARD:
+ forward = (void *)(uintptr_t)((struct cb_forward
*)rec)->forward;
+ printk(KERN_DEBUG "coreboot: forward to %p\n",
+ forward);
+
+ if (phys_to_virt((phys_addr_t) forward) >= high_memory)
+ addr = ioremap((phys_addr_t)
page_base(forward), 0x1000)
+ + page_offset(forward);
+ else
+ addr = phys_to_virt((phys_addr_t) forward);
+ /* we will leave the pages mapped */
+ return cb_parse_header(addr, addr + 0x1000, info);
+
+ continue;
+ case CB_TAG_MEMORY:
+ cb_parse_memory(ptr, info);
+ break;
+ case CB_TAG_SERIAL:
+ cb_parse_serial(ptr, info);
+ break;
+ case CB_TAG_CMOS_OPTION_TABLE:
+ cb_parse_optiontable(ptr, info);
+ break;
+ case CB_TAG_OPTION_CHECKSUM:
+ cb_parse_checksum(ptr, info);
+ break;
+ // FIXME we should warn on serial if coreboot set up a
+ // framebuffer buf the payload does not know about it.
+ case CB_TAG_FRAMEBUFFER:
+ cb_parse_framebuffer(ptr, info);
+ break;
+ case CB_TAG_MAINBOARD:
+ info->mainboard = (struct cb_mainboard *)ptr;
+ break;
+ case CB_TAG_VERSION:
+ case CB_TAG_EXTRA_VERSION:
+ case CB_TAG_BUILD:
+ case CB_TAG_COMPILE_TIME:
+ case CB_TAG_COMPILE_BY:
+ case CB_TAG_COMPILE_HOST:
+ case CB_TAG_COMPILE_DOMAIN:
+ case CB_TAG_COMPILER:
+ case CB_TAG_LINKER:
+ case CB_TAG_ASSEMBLER:
+ printk(KERN_DEBUG "cb_parse_string: [%04x] %s\n",
+ rec->tag, ((struct cb_string *)rec)->string);
+ break;
+ }
+
+ ptr += rec->size;
+
+ if ((void *)ptr >= end)
+ return -1;
+ }
+
+ printk(KERN_DEBUG "coreboot: success (%u entries)!\n",
+ header->table_entries);
+
+ return 1;
+}
+
diff --git a/lib/libpayload/coreboot_x86.c b/lib/libpayload/coreboot_x86.c
new file mode 100644
index 0000000..fa68041
--- /dev/null
+++ b/lib/libpayload/coreboot_x86.c
@@ -0,0 +1,54 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2008 Advanced Micro Devices, Inc.
+ * Copyright (C) 2009 coresystems GmbH
+ * Copyright (C) 2011 Philip Prindeville, Redfish Solutions, LLC.
+ *
+ * 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 <linux/libpayload/libpayload.h>
+#include <linux/libpayload/sysinfo.h>
+#include <linux/libpayload/coreboot_tables.h>
+
+#include <linux/highmem.h>
+#include <asm/page.h>
+
+/* == Architecture specific == */
+/* This is the x86 specific stuff. */
+
+int get_coreboot_info(struct sysinfo_t *info)
+{
+ int ret;
+ void *base = phys_to_virt(0x00000000);
+
+ ret = cb_parse_header(base, base + 0x1000, info);
+ if (ret != 1) {
+ base = phys_to_virt(0x000f0000);
+ ret = cb_parse_header(base, base + 0x1000, info);
+ }
+
+ return (ret == 1) ? 0 : -1;
+}
diff --git a/lib/libpayload/sysinfo.c b/lib/libpayload/sysinfo.c
new file mode 100644
index 0000000..21c22f9
--- /dev/null
+++ b/lib/libpayload/sysinfo.c
@@ -0,0 +1,68 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2008 Advanced Micro Devices, Inc.
+ * Copyright (C) 2011 Philip Prindeville, Redfish Solutions, LLC.
+ *
+ * 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 <linux/libpayload/libpayload.h>
+#include <linux/libpayload/sysinfo.h>
+#include <linux/libpayload/coreboot_tables.h>
+
+/**
+ * This is a global structure that is used through the library - we set it
+ * up initially with some dummy values - hopefully they will be overridden.
+ */
+struct sysinfo_t lib_sysinfo = {
+ .ser_ioport = 0x3f8,
+};
+EXPORT_SYMBOL(lib_sysinfo);
+
+int lib_get_sysinfo(void)
+{
+ int ret;
+
+ /* Get information from the coreboot tables,
+ * if they exist */
+
+ ret = get_coreboot_info(&lib_sysinfo);
+
+ if (!lib_sysinfo.n_memranges) {
+ /* If we can't get a good memory range, use the default. */
+ lib_sysinfo.n_memranges = 2;
+
+ lib_sysinfo.memrange[0].base = 0;
+ lib_sysinfo.memrange[0].size = 640 * 1024;
+ lib_sysinfo.memrange[0].type = CB_MEM_RAM;
+
+ lib_sysinfo.memrange[1].base = 1024 * 1024;
+ lib_sysinfo.memrange[1].size = 31 * 1024 * 1024;
+ lib_sysinfo.memrange[1].type = CB_MEM_RAM;
+ }
+
+ return ret;
+}
+EXPORT_SYMBOL(lib_get_sysinfo);
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