X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=src%2Fcoreboot.c;h=e328c15acfb53f9d6cfb6b2b173d61163a89142a;hb=refs%2Fheads%2Fcoreboot;hp=5f0190f69d9a1749df6372d88595b1db9db79738;hpb=071f154f007bd2d6c30c8d702f42219efdd09557;p=seabios.git

diff --git a/src/coreboot.c b/src/coreboot.c
index 5f0190f..e328c15 100644
--- a/src/coreboot.c
+++ b/src/coreboot.c
@@ -1,112 +1,15 @@
 // Coreboot interface support.
 //
-// Copyright (C) 2008  Kevin O'Connor <kevin@koconnor.net>
+// Copyright (C) 2008,2009  Kevin O'Connor <kevin@koconnor.net>
 //
 // This file may be distributed under the terms of the GNU LGPLv3 license.
 
 #include "memmap.h" // add_e820
 #include "util.h" // dprintf
-#include "pci.h" // struct pir_header
-#include "acpi.h" // struct rsdp_descriptor
-#include "mptable.h" // MPTABLE_SIGNATURE
 #include "biosvar.h" // GET_EBDA
-
-
-/****************************************************************
- * BIOS table copying
- ****************************************************************/
-
-static void
-copy_pir(void *pos)
-{
-    struct pir_header *p = pos;
-    if (p->signature != PIR_SIGNATURE)
-        return;
-    if (PirOffset)
-        return;
-    if (p->size < sizeof(*p))
-        return;
-    if (checksum(pos, p->size) != 0)
-        return;
-    bios_table_cur_addr = ALIGN(bios_table_cur_addr, 16);
-    if (bios_table_cur_addr + p->size > bios_table_end_addr) {
-        dprintf(1, "No room to copy PIR table!\n");
-        return;
-    }
-    dprintf(1, "Copying PIR from %p to %x\n", pos, bios_table_cur_addr);
-    memcpy((void*)bios_table_cur_addr, pos, p->size);
-    PirOffset = bios_table_cur_addr - BUILD_BIOS_ADDR;
-    bios_table_cur_addr += p->size;
-}
-
-static void
-copy_mptable(void *pos)
-{
-    struct mptable_floating_s *p = pos;
-    if (p->signature != MPTABLE_SIGNATURE)
-        return;
-    if (!p->physaddr)
-        return;
-    if (checksum(pos, sizeof(*p)) != 0)
-        return;
-    u32 length = p->length * 16;
-    bios_table_cur_addr = ALIGN(bios_table_cur_addr, 16);
-    u16 mpclength = ((struct mptable_config_s *)p->physaddr)->length;
-    if (bios_table_cur_addr + length + mpclength > bios_table_end_addr) {
-        dprintf(1, "No room to copy MPTABLE!\n");
-        return;
-    }
-    dprintf(1, "Copying MPTABLE from %p/%x to %x\n"
-            , pos, p->physaddr, bios_table_cur_addr);
-    memcpy((void*)bios_table_cur_addr, pos, length);
-    struct mptable_floating_s *newp = (void*)bios_table_cur_addr;
-    newp->physaddr = bios_table_cur_addr + length;
-    newp->checksum = 0;
-    newp->checksum = -checksum(newp, sizeof(*newp));
-    memcpy((void*)bios_table_cur_addr + length, (void*)p->physaddr, mpclength);
-    bios_table_cur_addr += length + mpclength;
-}
-
-static void
-copy_acpi_rsdp(void *pos)
-{
-    if (RsdpAddr)
-        return;
-    struct rsdp_descriptor *p = pos;
-    if (p->signature != RSDP_SIGNATURE)
-        return;
-    u32 length = 20;
-    if (checksum(pos, length) != 0)
-        return;
-    if (p->revision > 1) {
-        length = p->length;
-        if (checksum(pos, length) != 0)
-            return;
-    }
-    bios_table_cur_addr = ALIGN(bios_table_cur_addr, 16);
-    if (bios_table_cur_addr + length > bios_table_end_addr) {
-        dprintf(1, "No room to copy ACPI RSDP table!\n");
-        return;
-    }
-    dprintf(1, "Copying ACPI RSDP from %p to %x\n", pos, bios_table_cur_addr);
-    RsdpAddr = (void*)bios_table_cur_addr;
-    memcpy(RsdpAddr, pos, length);
-    bios_table_cur_addr += length;
-}
-
-// Attempt to find (and relocate) any standard bios tables found in a
-// given address range.
-static void
-scan_tables(u32 start, u32 size)
-{
-    void *p = (void*)ALIGN(start, 16);
-    void *end = (void*)start + size;
-    for (; p<end; p += 16) {
-        copy_pir(p);
-        copy_mptable(p);
-        copy_acpi_rsdp(p);
-    }
-}
+#include "lzmadecode.h" // LzmaDecode
+#include "smbios.h" // smbios_init
+#include "boot.h" // boot_add_cbfs
 
 
 /****************************************************************
@@ -143,6 +46,16 @@ struct cb_memory {
 #define MEM_RANGE_COUNT(_rec) \
         (((_rec)->size - sizeof(*(_rec))) / sizeof((_rec)->map[0]))
 
+struct cb_mainboard {
+    u32 tag;
+    u32 size;
+    u8  vendor_idx;
+    u8  part_idx;
+    char  strings[0];
+};
+
+#define CB_TAG_MAINBOARD 0x0003
+
 struct cb_forward {
     u32 tag;
     u32 size;
@@ -203,16 +116,15 @@ find_cb_subtable(struct cb_header *cbh, u32 tag)
     return NULL;
 }
 
+static struct cb_memory *CBMemTable;
+const char *CBvendor = "", *CBpart = "";
+
 // Populate max ram and e820 map info by scanning for a coreboot table.
-void
-coreboot_fill_map()
+static void
+coreboot_fill_map(void)
 {
     dprintf(3, "Attempting to find coreboot table\n");
 
-    // Init variables set in coreboot table memory scan.
-    PirOffset = 0;
-    RsdpAddr = 0;
-
     // Find coreboot table.
     struct cb_header *cbh = find_cb_header(0, 0x1000);
     if (!cbh)
@@ -225,7 +137,7 @@ coreboot_fill_map()
             goto fail;
     }
     dprintf(3, "Now attempting to find coreboot memory map\n");
-    struct cb_memory *cbm = find_cb_subtable(cbh, CB_TAG_MEMORY);
+    struct cb_memory *cbm = CBMemTable = find_cb_subtable(cbh, CB_TAG_MEMORY);
     if (!cbm)
         goto fail;
 
@@ -236,7 +148,6 @@ coreboot_fill_map()
         u32 type = m->type;
         if (type == CB_MEM_TABLE) {
             type = E820_RESERVED;
-            scan_tables(m->start, m->size);
         } else if (type == E820_ACPI || type == E820_RAM) {
             u64 end = m->start + m->size;
             if (end > 0x100000000ull) {
@@ -256,9 +167,12 @@ coreboot_fill_map()
     // confuses grub.  So, override it.
     add_e820(0, 16*1024, E820_RAM);
 
-    // XXX - just create dummy smbios table for now - should detect if
-    // smbios/dmi table is found from coreboot and use that instead.
-    smbios_init();
+    struct cb_mainboard *cbmb = find_cb_subtable(cbh, CB_TAG_MAINBOARD);
+    if (cbmb) {
+        CBvendor = &cbmb->strings[cbmb->vendor_idx];
+        CBpart = &cbmb->strings[cbmb->part_idx];
+        dprintf(1, "Found mainboard %s %s\n", CBvendor, CBpart);
+    }
 
     return;
 
@@ -270,3 +184,359 @@ fail:
     add_e820(0, 16*1024*1024, E820_RAM);
     return;
 }
+
+
+/****************************************************************
+ * BIOS table copying
+ ****************************************************************/
+
+// Attempt to find (and relocate) any standard bios tables found in a
+// given address range.
+static void
+scan_tables(u32 start, u32 size)
+{
+    void *p = (void*)ALIGN(start, 16);
+    void *end = (void*)start + size;
+    for (; p<end; p += 16) {
+        copy_pir(p);
+        copy_mptable(p);
+        copy_acpi_rsdp(p);
+        copy_smbios(p);
+    }
+}
+
+void
+coreboot_copy_biostable(void)
+{
+    struct cb_memory *cbm = CBMemTable;
+    if (! CONFIG_COREBOOT || !cbm)
+        return;
+
+    dprintf(3, "Relocating coreboot bios tables\n");
+
+    // Scan CB_MEM_TABLE areas for bios tables.
+    int i, count = MEM_RANGE_COUNT(cbm);
+    for (i=0; i<count; i++) {
+        struct cb_memory_range *m = &cbm->map[i];
+        if (m->type == CB_MEM_TABLE)
+            scan_tables(m->start, m->size);
+    }
+
+    // XXX - create a dummy smbios table for now.
+    if (!SMBiosAddr)
+        smbios_init();
+}
+
+
+/****************************************************************
+ * ulzma
+ ****************************************************************/
+
+// Uncompress data in flash to an area of memory.
+static int
+ulzma(u8 *dst, u32 maxlen, const u8 *src, u32 srclen)
+{
+    dprintf(3, "Uncompressing data %d@%p to %d@%p\n", srclen, src, maxlen, dst);
+    CLzmaDecoderState state;
+    int ret = LzmaDecodeProperties(&state.Properties, src, LZMA_PROPERTIES_SIZE);
+    if (ret != LZMA_RESULT_OK) {
+        dprintf(1, "LzmaDecodeProperties error - %d\n", ret);
+        return -1;
+    }
+    u8 scratch[15980];
+    int need = (LzmaGetNumProbs(&state.Properties) * sizeof(CProb));
+    if (need > sizeof(scratch)) {
+        dprintf(1, "LzmaDecode need %d have %d\n", need, (unsigned int)sizeof(scratch));
+        return -1;
+    }
+    state.Probs = (CProb *)scratch;
+
+    u32 dstlen = *(u32*)(src + LZMA_PROPERTIES_SIZE);
+    if (dstlen > maxlen) {
+        dprintf(1, "LzmaDecode too large (max %d need %d)\n", maxlen, dstlen);
+        return -1;
+    }
+    u32 inProcessed, outProcessed;
+    ret = LzmaDecode(&state, src + LZMA_PROPERTIES_SIZE + 8, srclen
+                     , &inProcessed, dst, dstlen, &outProcessed);
+    if (ret) {
+        dprintf(1, "LzmaDecode returned %d\n", ret);
+        return -1;
+    }
+    return dstlen;
+}
+
+
+/****************************************************************
+ * Coreboot flash format
+ ****************************************************************/
+
+#define CBFS_HEADER_MAGIC 0x4F524243
+#define CBFS_HEADPTR_ADDR 0xFFFFFFFc
+#define CBFS_VERSION1 0x31313131
+
+struct cbfs_header {
+    u32 magic;
+    u32 version;
+    u32 romsize;
+    u32 bootblocksize;
+    u32 align;
+    u32 offset;
+    u32 pad[2];
+} PACKED;
+
+static struct cbfs_header *CBHDR;
+
+static void
+cbfs_setup(void)
+{
+    if (!CONFIG_COREBOOT || !CONFIG_COREBOOT_FLASH)
+        return;
+
+    CBHDR = *(void **)CBFS_HEADPTR_ADDR;
+    if (CBHDR->magic != htonl(CBFS_HEADER_MAGIC)) {
+        dprintf(1, "Unable to find CBFS (ptr=%p; got %x not %x)\n"
+                , CBHDR, CBHDR->magic, htonl(CBFS_HEADER_MAGIC));
+        CBHDR = NULL;
+        return;
+    }
+
+    dprintf(1, "Found CBFS header at %p\n", CBHDR);
+}
+
+#define CBFS_FILE_MAGIC 0x455649484352414cLL // LARCHIVE
+
+struct cbfs_file {
+    u64 magic;
+    u32 len;
+    u32 type;
+    u32 checksum;
+    u32 offset;
+    char filename[0];
+} PACKED;
+
+// Verify a cbfs entry looks valid.
+static struct cbfs_file *
+cbfs_verify(struct cbfs_file *file)
+{
+    if (file < (struct cbfs_file *)(0xFFFFFFFF - ntohl(CBHDR->romsize)))
+        return NULL;
+    u64 magic = file->magic;
+    if (magic == CBFS_FILE_MAGIC) {
+        dprintf(5, "Found CBFS file %s\n", file->filename);
+        return file;
+    }
+    return NULL;
+}
+
+// Return the first file in the CBFS archive
+static struct cbfs_file *
+cbfs_getfirst(void)
+{
+    if (! CBHDR)
+        return NULL;
+    return cbfs_verify((void *)(0 - ntohl(CBHDR->romsize) + ntohl(CBHDR->offset)));
+}
+
+// Return the file after the given file.
+static struct cbfs_file *
+cbfs_getnext(struct cbfs_file *file)
+{
+    file = (void*)file + ALIGN(ntohl(file->len) + ntohl(file->offset), ntohl(CBHDR->align));
+    return cbfs_verify(file);
+}
+
+// Find the file with the given filename.
+struct cbfs_file *
+cbfs_findfile(const char *fname)
+{
+    dprintf(3, "Searching CBFS for %s\n", fname);
+    struct cbfs_file *file;
+    for (file = cbfs_getfirst(); file; file = cbfs_getnext(file))
+        if (strcmp(fname, file->filename) == 0)
+            return file;
+    return NULL;
+}
+
+// Find next file with the given filename prefix.
+struct cbfs_file *
+cbfs_findprefix(const char *prefix, struct cbfs_file *last)
+{
+    if (!CONFIG_COREBOOT || !CONFIG_COREBOOT_FLASH)
+        return NULL;
+
+    dprintf(3, "Searching CBFS for prefix %s\n", prefix);
+    int len = strlen(prefix);
+    struct cbfs_file *file;
+    if (! last)
+        file = cbfs_getfirst();
+    else
+        file = cbfs_getnext(last);
+    for (; file; file = cbfs_getnext(file))
+        if (memcmp(prefix, file->filename, len) == 0)
+            return file;
+    return NULL;
+}
+
+// Find a file with the given filename (possibly with ".lzma" extension).
+struct cbfs_file *
+cbfs_finddatafile(const char *fname)
+{
+    int fnlen = strlen(fname);
+    struct cbfs_file *file = NULL;
+    for (;;) {
+        file = cbfs_findprefix(fname, file);
+        if (!file)
+            return NULL;
+        if (file->filename[fnlen] == '\0'
+            || strcmp(&file->filename[fnlen], ".lzma") == 0)
+            return file;
+    }
+}
+
+// Determine whether the file has a ".lzma" extension.
+static int
+cbfs_iscomp(struct cbfs_file *file)
+{
+    int fnamelen = strlen(file->filename);
+    return fnamelen > 5 && strcmp(&file->filename[fnamelen-5], ".lzma") == 0;
+}
+
+// Return the filename of a given file.
+const char *
+cbfs_filename(struct cbfs_file *file)
+{
+    return file->filename;
+}
+
+// Determine the uncompressed size of a datafile.
+u32
+cbfs_datasize(struct cbfs_file *file)
+{
+    void *src = (void*)file + ntohl(file->offset);
+    if (cbfs_iscomp(file))
+        return *(u32*)(src + LZMA_PROPERTIES_SIZE);
+    return ntohl(file->len);
+}
+
+// Copy a file to memory (uncompressing if necessary)
+int
+cbfs_copyfile(struct cbfs_file *file, void *dst, u32 maxlen)
+{
+    if (!CONFIG_COREBOOT || !CONFIG_COREBOOT_FLASH || !file)
+        return -1;
+
+    u32 size = ntohl(file->len);
+    void *src = (void*)file + ntohl(file->offset);
+    if (cbfs_iscomp(file)) {
+        // Compressed - copy to temp ram and uncompress it.
+        void *temp = malloc_tmphigh(size);
+        if (!temp)
+            return -1;
+        iomemcpy(temp, src, size);
+        int ret = ulzma(dst, maxlen, temp, size);
+        yield();
+        free(temp);
+        return ret;
+    }
+
+    // Not compressed.
+    dprintf(3, "Copying data %d@%p to %d@%p\n", size, src, maxlen, dst);
+    if (size > maxlen) {
+        warn_noalloc();
+        return -1;
+    }
+    iomemcpy(dst, src, size);
+    return size;
+}
+
+struct cbfs_payload_segment {
+    u32 type;
+    u32 compression;
+    u32 offset;
+    u64 load_addr;
+    u32 len;
+    u32 mem_len;
+} PACKED;
+
+#define PAYLOAD_SEGMENT_BSS    0x20535342
+#define PAYLOAD_SEGMENT_ENTRY  0x52544E45
+
+#define CBFS_COMPRESS_NONE  0
+#define CBFS_COMPRESS_LZMA  1
+
+struct cbfs_payload {
+    struct cbfs_payload_segment segments[1];
+};
+
+void
+cbfs_run_payload(struct cbfs_file *file)
+{
+    if (!CONFIG_COREBOOT || !CONFIG_COREBOOT_FLASH || !file)
+        return;
+    dprintf(1, "Run %s\n", file->filename);
+    struct cbfs_payload *pay = (void*)file + ntohl(file->offset);
+    struct cbfs_payload_segment *seg = pay->segments;
+    for (;;) {
+        void *src = (void*)pay + ntohl(seg->offset);
+        void *dest = (void*)ntohl((u32)seg->load_addr);
+        u32 src_len = ntohl(seg->len);
+        u32 dest_len = ntohl(seg->mem_len);
+        switch (seg->type) {
+        case PAYLOAD_SEGMENT_BSS:
+            dprintf(3, "BSS segment %d@%p\n", dest_len, dest);
+            memset(dest, 0, dest_len);
+            break;
+        case PAYLOAD_SEGMENT_ENTRY: {
+            dprintf(1, "Calling addr %p\n", dest);
+            void (*func)() = dest;
+            func();
+            return;
+        }
+        default:
+            dprintf(3, "Segment %x %d@%p -> %d@%p\n"
+                    , seg->type, src_len, src, dest_len, dest);
+            if (seg->compression == htonl(CBFS_COMPRESS_NONE)) {
+                if (src_len > dest_len)
+                    src_len = dest_len;
+                memcpy(dest, src, src_len);
+            } else if (CONFIG_LZMA
+                       && seg->compression == htonl(CBFS_COMPRESS_LZMA)) {
+                int ret = ulzma(dest, dest_len, src, src_len);
+                if (ret < 0)
+                    return;
+                src_len = ret;
+            } else {
+                dprintf(1, "No support for compression type %x\n"
+                        , seg->compression);
+                return;
+            }
+            if (dest_len > src_len)
+                memset(dest + src_len, 0, dest_len - src_len);
+            break;
+        }
+        seg++;
+    }
+}
+
+// Register payloads in "img/" directory with boot system.
+void
+cbfs_payload_setup(void)
+{
+    struct cbfs_file *file = NULL;
+    for (;;) {
+        file = cbfs_findprefix("img/", file);
+        if (!file)
+            break;
+        const char *filename = cbfs_filename(file);
+        char *desc = znprintf(MAXDESCSIZE, "Payload [%s]", &filename[4]);
+        boot_add_cbfs(file, desc, bootprio_find_named_rom(filename, 0));
+    }
+}
+
+void
+coreboot_setup(void)
+{
+    coreboot_fill_map();
+    cbfs_setup();
+}