#include "acpi.h" // struct rsdp_descriptor
#include "mptable.h" // MPTABLE_SIGNATURE
#include "biosvar.h" // GET_EBDA
+#include "lzmadecode.h" // LzmaDecode
/****************************************************************
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));
+ newp->checksum -= checksum(newp, sizeof(*newp));
memcpy((void*)bios_table_cur_addr + length, (void*)p->physaddr, mpclength);
bios_table_cur_addr += length + mpclength;
}
#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;
}
// Populate max ram and e820 map info by scanning for a coreboot table.
-void
+static void
coreboot_fill_map()
{
dprintf(3, "Attempting to find coreboot table\n");
// 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) {
+ const char *vendor = &cbmb->strings[cbmb->vendor_idx];
+ const char *part = &cbmb->strings[cbmb->part_idx];
+ dprintf(1, "Found mainboard %s %s\n", vendor, part);
+
+ vgahook_setup(vendor, part);
+ }
+
return;
fail:
add_e820(0, 16*1024*1024, E820_RAM);
return;
}
+
+
+/****************************************************************
+ * ulzma
+ ****************************************************************/
+
+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, 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
+ ****************************************************************/
+
+// XXX - optimize
+#define ntohl(x) ((((x)&0xff)<<24) | (((x)&0xff00)<<8) | \
+ (((x)&0xff0000) >> 8) | (((x)&0xff000000) >> 24))
+#define htonl(x) ntohl(x)
+
+#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()
+{
+ if (! CONFIG_COREBOOT_FLASH)
+ return;
+
+ CBHDR = *(void **)CBFS_HEADPTR_ADDR;
+ if (CBHDR->magic != htonl(CBFS_HEADER_MAGIC)) {
+ dprintf(1, "Unable to find CBFS (got %x not %x)\n"
+ , 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;
+
+static struct cbfs_file *
+cbfs_search(struct cbfs_file *file)
+{
+ for (;;) {
+ 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;
+ }
+ if (magic == 0)
+ return NULL;
+ file = (void*)file + ntohl(CBHDR->align);
+ }
+}
+
+static struct cbfs_file *
+cbfs_getfirst()
+{
+ if (! CBHDR)
+ return NULL;
+ return cbfs_search((void *)(0 - ntohl(CBHDR->romsize) + ntohl(CBHDR->offset)));
+}
+
+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_search(file);
+}
+
+static 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;
+}
+
+static int
+data_copy(u8 *dst, u32 maxlen, const u8 *src, u32 srclen)
+{
+ dprintf(3, "Copying data %d@%p to %d@%p\n", srclen, src, maxlen, dst);
+ if (srclen > maxlen) {
+ dprintf(1, "File too big to copy\n");
+ return -1;
+ }
+ memcpy(dst, src, srclen);
+ return srclen;
+}
+
+// Copy a file to memory (uncompressing if necessary)
+static int
+cbfs_copyfile(void *dst, u32 maxlen, const char *fname)
+{
+ dprintf(3, "Searching CBFS for data file %s\n", fname);
+ int fnlen = strlen(fname);
+ struct cbfs_file *file;
+ for (file = cbfs_getfirst(); file; file = cbfs_getnext(file)) {
+ if (memcmp(fname, file->filename, fnlen) != 0)
+ continue;
+ u32 size = ntohl(file->len);
+ void *src = (void*)file + ntohl(file->offset);
+ if (file->filename[fnlen] == '\0')
+ return data_copy(dst, maxlen, src, size);
+ if (strcmp(&file->filename[fnlen], ".lzma") == 0)
+ return ulzma(dst, maxlen, src, size);
+ }
+ return -1;
+}
+
+const char *
+cbfs_findNprefix(const char *prefix, int n)
+{
+ if (! CONFIG_COREBOOT_FLASH)
+ return NULL;
+
+ dprintf(3, "Searching CBFS for prefix %s\n", prefix);
+ int len = strlen(prefix);
+ struct cbfs_file *file;
+ for (file = cbfs_getfirst(); file; file = cbfs_getnext(file)) {
+ if (memcmp(prefix, file->filename, len) == 0) {
+ if (n <= 0)
+ return file->filename;
+ n--;
+ }
+ }
+ return NULL;
+}
+
+static char
+getHex(u8 x)
+{
+ if (x <= 9)
+ return '0' + x;
+ return 'a' + x - 10;
+}
+
+static u32
+hexify4(u16 x)
+{
+ return ((getHex(x&0xf) << 24)
+ | (getHex((x>>4)&0xf) << 16)
+ | (getHex((x>>8)&0xf) << 8)
+ | (getHex(x>>12)));
+}
+
+int
+cbfs_copy_optionrom(void *dst, u32 maxlen, u32 vendev)
+{
+ if (! CONFIG_COREBOOT_FLASH)
+ return -1;
+
+ char fname[17];
+ // Ughh - poor man's sprintf of "pci%04x,%04x.rom"
+ *(u32*)fname = 0x20696370; // "pci "
+ *(u32*)&fname[3] = hexify4(vendev);
+ fname[7] = ',';
+ *(u32*)&fname[8] = hexify4(vendev >> 16);
+ *(u32*)&fname[12] = 0x6d6f722e; // ".rom"
+ fname[16] = '\0';
+
+ return cbfs_copyfile(dst, maxlen, fname);
+}
+
+// Copy the next file with the given prefix - starting at pos 'last'.
+struct cbfs_file *
+cbfs_copyfile_prefix(void *dst, u32 maxlen, const char *prefix
+ , struct cbfs_file *last)
+{
+ if (! CONFIG_COREBOOT_FLASH)
+ return NULL;
+ dprintf(3, "Searching CBFS for data file prefix %s\n", prefix);
+ struct cbfs_file *file;
+ if (! last)
+ file = cbfs_getfirst();
+ else
+ file = cbfs_getnext(last);
+ int prefixlen = strlen(prefix);
+ for (; file; file = cbfs_getnext(file)) {
+ if (memcmp(prefix, file->filename, prefixlen) != 0)
+ continue;
+ u32 size = ntohl(file->len);
+ void *src = (void*)file + ntohl(file->offset);
+ int fnamelen = strlen(file->filename);
+ int rv;
+ if (fnamelen > 5 && strcmp(&file->filename[fnamelen-5], ".lzma") == 0)
+ rv = ulzma(dst, maxlen, src, size);
+ else
+ rv = data_copy(dst, maxlen, src, size);
+ if (rv >= 0)
+ return file;
+ }
+ return NULL;
+}
+
+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(const char *filename)
+{
+ if (! CONFIG_COREBOOT_FLASH)
+ return;
+ dprintf(1, "Run %s\n", filename);
+ struct cbfs_file *file = cbfs_findfile(filename);
+ if (!file)
+ return;
+ 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++;
+ }
+}
+
+void
+coreboot_setup(void)
+{
+ coreboot_fill_map();
+ cbfs_setup();
+}
projects / seabios.git / blobdiff