* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
*/
+#include <arch/byteorder.h>
#include <console/console.h>
-#include <part/fallback_boot.h>
+#include <fallback.h>
#include <boot/elf.h>
#include <boot/elf_boot.h>
#include <boot/coreboot_tables.h>
-#include <ip_checksum.h>
-#include <stream/read_bytes.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <cbfs.h>
+#include <lib.h>
-#ifndef CONFIG_BIG_ENDIAN
-#define ntohl(x) ( ((x&0xff)<<24) | ((x&0xff00)<<8) | \
- ((x&0xff0000) >> 8) | ((x&0xff000000) >> 24) )
-#else
-#define ntohl(x) (x)
-#endif
-
-/* Maximum physical address we can use for the coreboot bounce buffer.
- */
+/* Maximum physical address we can use for the coreboot bounce buffer. */
#ifndef MAX_ADDR
#define MAX_ADDR -1UL
#endif
+/* from coreboot_ram.ld: */
extern unsigned char _ram_seg;
extern unsigned char _eram_seg;
+static const unsigned long lb_start = (unsigned long)&_ram_seg;
+static const unsigned long lb_end = (unsigned long)&_eram_seg;
+
struct segment {
struct segment *next;
struct segment *prev;
- struct segment *phdr_next;
- struct segment *phdr_prev;
unsigned long s_dstaddr;
unsigned long s_srcaddr;
unsigned long s_memsz;
unsigned long s_filesz;
+ int compression;
};
-struct verify_callback {
- struct verify_callback *next;
- int (*callback)(struct verify_callback *vcb,
- Elf_ehdr *ehdr, Elf_phdr *phdr, struct segment *head);
- unsigned long desc_offset;
- unsigned long desc_addr;
-};
-
-struct ip_checksum_vcb {
- struct verify_callback data;
- unsigned short ip_checksum;
-};
-
-int cbfs_self_decompress(int algo, void *src,struct segment *new)
-{
- u8 *dst;
-
- /* for uncompressed, it's easy: just point at the area in ROM */
- if (algo == CBFS_COMPRESS_NONE) {
- new->s_srcaddr = (u32) src;
- new->s_filesz = new->s_memsz;
- return 0;
- }
-
- /* for compression, let's keep it simple. We'll malloc the destination
- * area and decompress to there. The compression overhead far outweighs
- * any overhead for an extra copy.
- */
- dst = malloc(new->s_memsz);
- if (! dst)
- return -1;
-
- switch(algo) {
-#if CONFIG_COMPRESSED_PAYLOAD_LZMA==1
- case CBFS_COMPRESS_LZMA: {
- unsigned long ulzma(unsigned char *src, unsigned char *dst);
- ulzma(src, dst);
- break;
- }
-#endif
-
-#if CONFIG_COMPRESSED_PAYLOAD_NRV2B==1
- case CBFS_COMPRESS_NRV2B: {
- unsigned long unrv2b(u8 *src, u8 *dst, unsigned long *ilen_p);
- unsigned long tmp;
- unrv2b(src, dst, &tmp);
- break;
- }
-#endif
- default:
- printk_info( "CBFS: Unknown compression type %d\n",
- algo);
- return -1;
- }
-
- new->s_srcaddr = (u32) dst;
- new->s_filesz = new->s_memsz;
- return 0;
-
-}
-
-/* The problem:
+/* The problem:
* Static executables all want to share the same addresses
* in memory because only a few addresses are reliably present on
* a machine, and implementing general relocation is hard.
*
* The solution:
- * - Allocate a buffer twice the size of the coreboot image.
- * - Anything that would overwrite coreboot copy into the lower half of
- * the buffer.
- * - After loading an ELF image copy coreboot to the upper half of the
- * buffer.
+ * - Allocate a buffer the size of the coreboot image plus additional
+ * required space.
+ * - Anything that would overwrite coreboot copy into the lower part of
+ * the buffer.
+ * - After loading an ELF image copy coreboot to the top of the buffer.
* - Then jump to the loaded image.
- *
+ *
* Benefits:
* - Nearly arbitrary standalone executables can be loaded.
* - Coreboot is preserved, so it can be returned to.
* - The implementation is still relatively simple,
- * and much simpler then the general case implemented in kexec.
- *
+ * and much simpler than the general case implemented in kexec.
*/
-static unsigned long get_bounce_buffer(struct lb_memory *mem)
+static unsigned long bounce_size, bounce_buffer;
+
+static void get_bounce_buffer(struct lb_memory *mem, unsigned long req_size)
{
unsigned long lb_size;
unsigned long mem_entries;
unsigned long buffer;
int i;
- lb_size = (unsigned long)(&_eram_seg - &_ram_seg);
- /* Double coreboot size so I have somewhere to place a copy to return to */
- lb_size = lb_size + lb_size;
- mem_entries = (mem->size - sizeof(*mem))/sizeof(mem->map[0]);
+ lb_size = lb_end - lb_start;
+ /* Plus coreboot size so I have somewhere
+ * to place a copy to return to.
+ */
+ lb_size = req_size + lb_size;
+ mem_entries = (mem->size - sizeof(*mem)) / sizeof(mem->map[0]);
buffer = 0;
for(i = 0; i < mem_entries; i++) {
unsigned long mstart, mend;
msize = unpack_lb64(mem->map[i].size);
mend = mstart + msize;
tbuffer = mend - lb_size;
- if (tbuffer < buffer)
+ if (tbuffer < buffer)
continue;
buffer = tbuffer;
}
- return buffer;
+ bounce_buffer = buffer;
+ bounce_size = req_size;
}
static int valid_area(struct lb_memory *mem, unsigned long buffer,
*/
int i;
unsigned long end = start + len;
- unsigned long mem_entries = (mem->size - sizeof(*mem))/sizeof(mem->map[0]);
+ unsigned long mem_entries = (mem->size - sizeof(*mem)) /
+ sizeof(mem->map[0]);
/* See if I conflict with the bounce buffer */
if (end >= buffer) {
mtype = mem->map[i].type;
mstart = unpack_lb64(mem->map[i].start);
mend = mstart + unpack_lb64(mem->map[i].size);
- if ((mtype == LB_MEM_RAM) && (start < mend) && (end > mstart)) {
+ if ((mtype == LB_MEM_RAM) && (start >= mstart) && (end < mend)) {
break;
}
- if ((mtype == LB_MEM_TABLE) && (start < mend) && (end > mstart)) {
- printk_err("Payload is overwriting Coreboot tables.\n");
+ if ((mtype == LB_MEM_TABLE) && (start >= mstart) && (end < mend)) {
+ printk(BIOS_ERR, "Payload is overwriting coreboot tables.\n");
break;
}
}
if (i == mem_entries) {
- printk_err("No matching ram area found for range:\n");
- printk_err(" [0x%016lx, 0x%016lx)\n", start, end);
- printk_err("Ram areas\n");
+ printk(BIOS_ERR, "No matching ram area found for range:\n");
+ printk(BIOS_ERR, " [0x%016lx, 0x%016lx)\n", start, end);
+ printk(BIOS_ERR, "Ram areas\n");
for(i = 0; i < mem_entries; i++) {
uint64_t mstart, mend;
uint32_t mtype;
mtype = mem->map[i].type;
mstart = unpack_lb64(mem->map[i].start);
mend = mstart + unpack_lb64(mem->map[i].size);
- printk_err(" [0x%016lx, 0x%016lx) %s\n",
- (unsigned long)mstart,
- (unsigned long)mend,
+ printk(BIOS_ERR, " [0x%016lx, 0x%016lx) %s\n",
+ (unsigned long)mstart,
+ (unsigned long)mend,
(mtype == LB_MEM_RAM)?"RAM":"Reserved");
-
+
}
return 0;
}
return 1;
}
-static void relocate_segment(unsigned long buffer, struct segment *seg)
+
+static int overlaps_coreboot(struct segment *seg)
+{
+ unsigned long start, end;
+ start = seg->s_dstaddr;
+ end = start + seg->s_memsz;
+ return !((end <= lb_start) || (start >= lb_end));
+}
+
+static int relocate_segment(unsigned long buffer, struct segment *seg)
{
/* Modify all segments that want to load onto coreboot
* to load onto the bounce buffer instead.
*/
- unsigned long lb_start = (unsigned long)&_ram_seg;
- unsigned long lb_end = (unsigned long)&_eram_seg;
- unsigned long start, middle, end;
+ /* ret: 1 : A new segment is inserted before the seg.
+ * 0 : A new segment is inserted after the seg, or no new one.
+ */
+ unsigned long start, middle, end, ret = 0;
- printk_spew("lb: [0x%016lx, 0x%016lx)\n",
+ printk(BIOS_SPEW, "lb: [0x%016lx, 0x%016lx)\n",
lb_start, lb_end);
+ /* I don't conflict with coreboot so get out of here */
+ if (!overlaps_coreboot(seg))
+ return 0;
+
start = seg->s_dstaddr;
middle = start + seg->s_filesz;
end = start + seg->s_memsz;
- /* I don't conflict with coreboot so get out of here */
- if ((end <= lb_start) || (start >= lb_end))
- return;
- printk_spew("segment: [0x%016lx, 0x%016lx, 0x%016lx)\n",
+ printk(BIOS_SPEW, "segment: [0x%016lx, 0x%016lx, 0x%016lx)\n",
start, middle, end);
- /* Slice off a piece at the beginning
- * that doesn't conflict with coreboot.
- */
- if (start < lb_start) {
- struct segment *new;
- unsigned long len = lb_start - start;
- new = malloc(sizeof(*new));
- *new = *seg;
- new->s_memsz = len;
- seg->s_memsz -= len;
- seg->s_dstaddr += len;
- seg->s_srcaddr += len;
- if (seg->s_filesz > len) {
- new->s_filesz = len;
- seg->s_filesz -= len;
- } else {
- seg->s_filesz = 0;
+ if (seg->compression == CBFS_COMPRESS_NONE) {
+ /* Slice off a piece at the beginning
+ * that doesn't conflict with coreboot.
+ */
+ if (start < lb_start) {
+ struct segment *new;
+ unsigned long len = lb_start - start;
+ new = malloc(sizeof(*new));
+ *new = *seg;
+ new->s_memsz = len;
+ seg->s_memsz -= len;
+ seg->s_dstaddr += len;
+ seg->s_srcaddr += len;
+ if (seg->s_filesz > len) {
+ new->s_filesz = len;
+ seg->s_filesz -= len;
+ } else {
+ seg->s_filesz = 0;
+ }
+
+ /* Order by stream offset */
+ new->next = seg;
+ new->prev = seg->prev;
+ seg->prev->next = new;
+ seg->prev = new;
+
+ /* compute the new value of start */
+ start = seg->s_dstaddr;
+
+ printk(BIOS_SPEW, " early: [0x%016lx, 0x%016lx, 0x%016lx)\n",
+ new->s_dstaddr,
+ new->s_dstaddr + new->s_filesz,
+ new->s_dstaddr + new->s_memsz);
+
+ ret = 1;
}
- /* Order by stream offset */
- new->next = seg;
- new->prev = seg->prev;
- seg->prev->next = new;
- seg->prev = new;
- /* Order by original program header order */
- new->phdr_next = seg;
- new->phdr_prev = seg->phdr_prev;
- seg->phdr_prev->phdr_next = new;
- seg->phdr_prev = new;
-
- /* compute the new value of start */
- start = seg->s_dstaddr;
-
- printk_spew(" early: [0x%016lx, 0x%016lx, 0x%016lx)\n",
- new->s_dstaddr,
- new->s_dstaddr + new->s_filesz,
- new->s_dstaddr + new->s_memsz);
- }
-
- /* Slice off a piece at the end
- * that doesn't conflict with coreboot
- */
- if (end > lb_end) {
- unsigned long len = lb_end - start;
- struct segment *new;
- new = malloc(sizeof(*new));
- *new = *seg;
- seg->s_memsz = len;
- new->s_memsz -= len;
- new->s_dstaddr += len;
- new->s_srcaddr += len;
- if (seg->s_filesz > len) {
- seg->s_filesz = len;
- new->s_filesz -= len;
- } else {
- new->s_filesz = 0;
+ /* Slice off a piece at the end
+ * that doesn't conflict with coreboot
+ */
+ if (end > lb_end) {
+ unsigned long len = lb_end - start;
+ struct segment *new;
+ new = malloc(sizeof(*new));
+ *new = *seg;
+ seg->s_memsz = len;
+ new->s_memsz -= len;
+ new->s_dstaddr += len;
+ new->s_srcaddr += len;
+ if (seg->s_filesz > len) {
+ seg->s_filesz = len;
+ new->s_filesz -= len;
+ } else {
+ new->s_filesz = 0;
+ }
+ /* Order by stream offset */
+ new->next = seg->next;
+ new->prev = seg;
+ seg->next->prev = new;
+ seg->next = new;
+
+ printk(BIOS_SPEW, " late: [0x%016lx, 0x%016lx, 0x%016lx)\n",
+ new->s_dstaddr,
+ new->s_dstaddr + new->s_filesz,
+ new->s_dstaddr + new->s_memsz);
}
- /* Order by stream offset */
- new->next = seg->next;
- new->prev = seg;
- seg->next->prev = new;
- seg->next = new;
- /* Order by original program header order */
- new->phdr_next = seg->phdr_next;
- new->phdr_prev = seg;
- seg->phdr_next->phdr_prev = new;
- seg->phdr_next = new;
-
- /* compute the new value of end */
- end = start + len;
-
- printk_spew(" late: [0x%016lx, 0x%016lx, 0x%016lx)\n",
- new->s_dstaddr,
- new->s_dstaddr + new->s_filesz,
- new->s_dstaddr + new->s_memsz);
-
}
+
/* Now retarget this segment onto the bounce buffer */
- /* sort of explanation: the buffer is a 1:1 mapping to coreboot.
+ /* sort of explanation: the buffer is a 1:1 mapping to coreboot.
* so you will make the dstaddr be this buffer, and it will get copied
* later to where coreboot lives.
*/
seg->s_dstaddr = buffer + (seg->s_dstaddr - lb_start);
- printk_spew(" bounce: [0x%016lx, 0x%016lx, 0x%016lx)\n",
- seg->s_dstaddr,
- seg->s_dstaddr + seg->s_filesz,
+ printk(BIOS_SPEW, " bounce: [0x%016lx, 0x%016lx, 0x%016lx)\n",
+ seg->s_dstaddr,
+ seg->s_dstaddr + seg->s_filesz,
seg->s_dstaddr + seg->s_memsz);
+
+ return ret;
}
static int build_self_segment_list(
- struct segment *head,
- unsigned long bounce_buffer, struct lb_memory *mem,
+ struct segment *head,
+ struct lb_memory *mem,
struct cbfs_payload *payload, u32 *entry)
{
struct segment *new;
struct segment *ptr;
- u8 *data;
- int datasize;
struct cbfs_payload_segment *segment, *first_segment;
memset(head, 0, sizeof(*head));
- head->phdr_next = head->phdr_prev = head;
head->next = head->prev = head;
first_segment = segment = &payload->segments;
while(1) {
- printk_debug("Segment %p\n", segment);
+ printk(BIOS_DEBUG, "Loading segment from rom address 0x%p\n", segment);
switch(segment->type) {
- default: printk_emerg("Bad segment type %x\n", segment->type);
- return -1;
case PAYLOAD_SEGMENT_PARAMS:
- printk_info("found param section\n");
+ printk(BIOS_DEBUG, " parameter section (skipped)\n");
segment++;
continue;
+
case PAYLOAD_SEGMENT_CODE:
case PAYLOAD_SEGMENT_DATA:
- printk_info( "%s: ", segment->type == PAYLOAD_SEGMENT_CODE ?
- "code" : "data");
- new = malloc(sizeof(*new));
- new->s_dstaddr = ntohl((u32) segment->load_addr);
- new->s_memsz = ntohl(segment->mem_len);
-
- datasize = ntohl(segment->len);
- /* figure out decompression, do it, get pointer to the area */
- if (cbfs_self_decompress(ntohl(segment->compression),
- ((unsigned char *) first_segment) +
- ntohl(segment->offset), new)) {
- printk_emerg("cbfs_self_decompress failed\n");
- return;
- }
- printk_debug("New segment dstaddr 0x%lx memsize 0x%lx srcaddr 0x%lx filesize 0x%lx\n",
- new->s_dstaddr, new->s_memsz, new->s_srcaddr, new->s_filesz);
- /* Clean up the values */
- if (new->s_filesz > new->s_memsz) {
- new->s_filesz = new->s_memsz;
- }
- printk_debug("(cleaned up) New segment addr 0x%lx size 0x%lx offset 0x%lx filesize 0x%lx\n",
- new->s_dstaddr, new->s_memsz, new->s_srcaddr, new->s_filesz);
- break;
+ printk(BIOS_DEBUG, " %s (compression=%x)\n",
+ segment->type == PAYLOAD_SEGMENT_CODE ? "code" : "data",
+ ntohl(segment->compression));
+ new = malloc(sizeof(*new));
+ new->s_dstaddr = ntohll(segment->load_addr);
+ new->s_memsz = ntohl(segment->mem_len);
+ new->compression = ntohl(segment->compression);
+
+ new->s_srcaddr = (u32) ((unsigned char *)first_segment)
+ + ntohl(segment->offset);
+ new->s_filesz = ntohl(segment->len);
+ printk(BIOS_DEBUG, " New segment dstaddr 0x%lx memsize 0x%lx srcaddr 0x%lx filesize 0x%lx\n",
+ new->s_dstaddr, new->s_memsz, new->s_srcaddr, new->s_filesz);
+ /* Clean up the values */
+ if (new->s_filesz > new->s_memsz) {
+ new->s_filesz = new->s_memsz;
+ }
+ printk(BIOS_DEBUG, " (cleaned up) New segment addr 0x%lx size 0x%lx offset 0x%lx filesize 0x%lx\n",
+ new->s_dstaddr, new->s_memsz, new->s_srcaddr, new->s_filesz);
+ break;
+
case PAYLOAD_SEGMENT_BSS:
- printk_info("BSS %p/%d\n", (void *) ntohl((u32) segment->load_addr),
- ntohl(segment->mem_len));
+ printk(BIOS_DEBUG, " BSS 0x%p (%d byte)\n", (void *)
+ (intptr_t)ntohll(segment->load_addr),
+ ntohl(segment->mem_len));
new = malloc(sizeof(*new));
new->s_filesz = 0;
- new->s_dstaddr = ntohl((u32) segment->load_addr);
+ new->s_dstaddr = ntohll(segment->load_addr);
new->s_memsz = ntohl(segment->mem_len);
-
break;
case PAYLOAD_SEGMENT_ENTRY:
- printk_info("Entry %p\n", (void *) ntohl((u32) segment->load_addr));
- *entry = (void *) ntohl((u32) segment->load_addr);
+ printk(BIOS_DEBUG, " Entry Point 0x%p\n", (void *) ntohl((u32) segment->load_addr));
+ *entry = ntohll(segment->load_addr);
+ /* Per definition, a payload always has the entry point
+ * as last segment. Thus, we use the occurence of the
+ * entry point as break condition for the loop.
+ * Can we actually just look at the number of section?
+ */
return 1;
+
+ default:
+ /* We found something that we don't know about. Throw
+ * hands into the sky and run away!
+ */
+ printk(BIOS_EMERG, "Bad segment type %x\n", segment->type);
+ return -1;
}
+
+ /* We have found another CODE, DATA or BSS segment */
segment++;
+
+ /* Find place where to insert our segment */
for(ptr = head->next; ptr != head; ptr = ptr->next) {
- if (new->s_srcaddr < ntohl((u32) segment->load_addr))
+ if (new->s_srcaddr < ntohll(segment->load_addr))
break;
}
+
/* Order by stream offset */
new->next = ptr;
new->prev = ptr->prev;
ptr->prev->next = new;
ptr->prev = new;
- /* Order by original program header order */
- new->phdr_next = head;
- new->phdr_prev = head->phdr_prev;
- head->phdr_prev->phdr_next = new;
- head->phdr_prev = new;
-
- /* Verify the memory addresses in the segment are valid */
- if (!valid_area(mem, bounce_buffer, new->s_dstaddr, new->s_memsz))
- goto out;
-
- /* Modify the segment to load onto the bounce_buffer if necessary.
- */
- relocate_segment(bounce_buffer, new);
}
+
return 1;
- out:
- return 0;
}
static int load_self_segments(
- struct segment *head, struct cbfs_payload *payload)
+ struct segment *head,
+ struct lb_memory *mem,
+ struct cbfs_payload *payload)
{
- unsigned long offset;
struct segment *ptr;
-
- offset = 0;
+
+ unsigned long bounce_high = lb_end;
+ for(ptr = head->next; ptr != head; ptr = ptr->next) {
+ if (!overlaps_coreboot(ptr))
+ continue;
+ if (ptr->s_dstaddr + ptr->s_memsz > bounce_high)
+ bounce_high = ptr->s_dstaddr + ptr->s_memsz;
+ }
+ get_bounce_buffer(mem, bounce_high - lb_start);
+ if (!bounce_buffer) {
+ printk(BIOS_ERR, "Could not find a bounce buffer...\n");
+ return 0;
+ }
+ for(ptr = head->next; ptr != head; ptr = ptr->next) {
+ /* Verify the memory addresses in the segment are valid */
+ if (!valid_area(mem, bounce_buffer, ptr->s_dstaddr, ptr->s_memsz))
+ return 0;
+ }
for(ptr = head->next; ptr != head; ptr = ptr->next) {
- unsigned long skip_bytes, read_bytes;
- unsigned char *dest, *middle, *end, *src;
- byte_offset_t result;
- printk_debug("Loading Segment: addr: 0x%016lx memsz: 0x%016lx filesz: 0x%016lx\n",
+ unsigned char *dest, *src;
+ printk(BIOS_DEBUG, "Loading Segment: addr: 0x%016lx memsz: 0x%016lx filesz: 0x%016lx\n",
ptr->s_dstaddr, ptr->s_memsz, ptr->s_filesz);
-
+
+ /* Modify the segment to load onto the bounce_buffer if necessary.
+ */
+ if (relocate_segment(bounce_buffer, ptr)) {
+ ptr = (ptr->prev)->prev;
+ continue;
+ }
+
+ printk(BIOS_DEBUG, "Post relocation: addr: 0x%016lx memsz: 0x%016lx filesz: 0x%016lx\n",
+ ptr->s_dstaddr, ptr->s_memsz, ptr->s_filesz);
+
/* Compute the boundaries of the segment */
dest = (unsigned char *)(ptr->s_dstaddr);
- end = dest + ptr->s_memsz;
- middle = dest + ptr->s_filesz;
- src = ptr->s_srcaddr;
- printk_spew("[ 0x%016lx, %016lx, 0x%016lx) <- %016lx\n",
- (unsigned long)dest,
- (unsigned long)middle,
- (unsigned long)end,
- (unsigned long)src);
-
+ src = (unsigned char *)(ptr->s_srcaddr);
+
/* Copy data from the initial buffer */
if (ptr->s_filesz) {
+ unsigned char *middle, *end;
size_t len;
len = ptr->s_filesz;
- memcpy(dest, src, len);
- dest += len;
- }
-
- /* Zero the extra bytes between middle & end */
- if (middle < end) {
- printk_debug("Clearing Segment: addr: 0x%016lx memsz: 0x%016lx\n",
- (unsigned long)middle, (unsigned long)(end - middle));
-
- /* Zero the extra bytes */
- memset(middle, 0, end - middle);
+ switch(ptr->compression) {
+ case CBFS_COMPRESS_LZMA: {
+ printk(BIOS_DEBUG, "using LZMA\n");
+ len = ulzma(src, dest);
+ if (!len) /* Decompression Error. */
+ return 0;
+ break;
+ }
+#if CONFIG_COMPRESSED_PAYLOAD_NRV2B
+ case CBFS_COMPRESS_NRV2B: {
+ printk(BIOS_DEBUG, "using NRV2B\n");
+ unsigned long unrv2b(u8 *src, u8 *dst, unsigned long *ilen_p);
+ unsigned long tmp;
+ len = unrv2b(src, dest, &tmp);
+ break;
+ }
+#endif
+ case CBFS_COMPRESS_NONE: {
+ printk(BIOS_DEBUG, "it's not compressed!\n");
+ memcpy(dest, src, len);
+ break;
+ }
+ default:
+ printk(BIOS_INFO, "CBFS: Unknown compression type %d\n", ptr->compression);
+ return -1;
+ }
+ end = dest + ptr->s_memsz;
+ middle = dest + len;
+ printk(BIOS_SPEW, "[ 0x%08lx, %08lx, 0x%08lx) <- %08lx\n",
+ (unsigned long)dest,
+ (unsigned long)middle,
+ (unsigned long)end,
+ (unsigned long)src);
+
+ /* Zero the extra bytes between middle & end */
+ if (middle < end) {
+ printk(BIOS_DEBUG, "Clearing Segment: addr: 0x%016lx memsz: 0x%016lx\n",
+ (unsigned long)middle, (unsigned long)(end - middle));
+
+ /* Zero the extra bytes */
+ memset(middle, 0, end - middle);
+ }
+ /* Copy the data that's outside the area that shadows coreboot_ram */
+ printk(BIOS_DEBUG, "dest %p, end %p, bouncebuffer %lx\n", dest, end, bounce_buffer);
+ if ((unsigned long)end > bounce_buffer) {
+ if ((unsigned long)dest < bounce_buffer) {
+ unsigned char *from = dest;
+ unsigned char *to = (unsigned char*)(lb_start-(bounce_buffer-(unsigned long)dest));
+ unsigned long amount = bounce_buffer-(unsigned long)dest;
+ printk(BIOS_DEBUG, "move prefix around: from %p, to %p, amount: %lx\n", from, to, amount);
+ memcpy(to, from, amount);
+ }
+ if ((unsigned long)end > bounce_buffer + (lb_end - lb_start)) {
+ unsigned long from = bounce_buffer + (lb_end - lb_start);
+ unsigned long to = lb_end;
+ unsigned long amount = (unsigned long)end - from;
+ printk(BIOS_DEBUG, "move suffix around: from %lx, to %lx, amount: %lx\n", from, to, amount);
+ memcpy((char*)to, (char*)from, amount);
+ }
+ }
}
}
return 1;
- out:
- return 0;
}
-int selfboot(struct lb_memory *mem, struct cbfs_payload *payload)
+static int selfboot(struct lb_memory *mem, struct cbfs_payload *payload)
{
- void *entry;
+ u32 entry=0;
struct segment head;
- unsigned long bounce_buffer;
-
- /* Find a bounce buffer so I can load to coreboot's current location */
- bounce_buffer = get_bounce_buffer(mem);
- if (!bounce_buffer) {
- printk_err("Could not find a bounce buffer...\n");
- goto out;
- }
/* Preprocess the self segments */
- if (!build_self_segment_list(&head, bounce_buffer, mem, payload, &entry))
+ if (!build_self_segment_list(&head, mem, payload, &entry))
goto out;
/* Load the segments */
- if (!load_self_segments(&head, payload))
+ if (!load_self_segments(&head, mem, payload))
goto out;
- printk_spew("Loaded segments\n");
+ printk(BIOS_SPEW, "Loaded segments\n");
/* Reset to booting from this image as late as possible */
boot_successful();
- printk_debug("Jumping to boot code at %p\n", entry);
- post_code(0xfe);
+ printk(BIOS_DEBUG, "Jumping to boot code at %x\n", entry);
+ post_code(POST_ENTER_ELF_BOOT);
/* Jump to kernel */
- jmp_to_elf_entry(entry, bounce_buffer);
+ jmp_to_elf_entry((void*)entry, bounce_buffer, bounce_size);
return 1;
- out:
+out:
return 0;
}
+void *cbfs_load_payload(struct lb_memory *lb_mem, const char *name)
+{
+ struct cbfs_payload *payload;
+
+ payload = (struct cbfs_payload *)cbfs_find_file(name, CBFS_TYPE_PAYLOAD);
+ if (payload == NULL)
+ return (void *) -1;
+ printk(BIOS_DEBUG, "Got a payload\n");
+
+ selfboot(lb_mem, payload);
+ printk(BIOS_EMERG, "SELFBOOT RETURNED!\n");
+
+ return (void *) -1;
+}
+
projects / coreboot.git / blobdiff