static int
load_elf_rom( unsigned long *entry, int fd )
{
int i, lszz_offs, elf_offs;
char buf[128], *addr;
Elf_ehdr ehdr;
Elf_phdr *phdr;
size_t s;
printk("Loading '%s'\n", get_file_path(fd));
/* the ELF-image (usually) starts at offset 0x4000 */
if( (elf_offs=find_elf(fd)) < 0 ) {
printk("----> %s is not an ELF image\n", buf );
exit(1);
}
if( !(phdr=elf_readhdrs(fd, elf_offs, &ehdr)) )
fatal_error("elf_readhdrs failed\n");
*entry = ehdr.e_entry;
/* load segments. Compressed ROM-image assumed to be located immediately
* after the last segment */
lszz_offs = elf_offs;
for( i=0; i<ehdr.e_phnum; i++ ) {
/* p_memsz, p_flags */
s = MIN( phdr[i].p_filesz, phdr[i].p_memsz );
seek_io( fd, elf_offs + phdr[i].p_offset );
/* printk("filesz: %08lX memsz: %08lX p_offset: %08lX p_vaddr %08lX\n",
phdr[i].p_filesz, phdr[i].p_memsz, phdr[i].p_offset,
phdr[i].p_vaddr ); */
if( phdr[i].p_vaddr != phdr[i].p_paddr )
printk("WARNING: ELF segment virtual addr != physical addr\n");
lszz_offs = MAX( lszz_offs, elf_offs + phdr[i].p_offset + phdr[i].p_filesz );
if( !s )
continue;
if( ofmem_claim( phdr[i].p_vaddr, phdr[i].p_memsz, 0 ) == -1 )
fatal_error("Claim failed!\n");
addr = (char*)phdr[i].p_vaddr;
if( read_io(fd, addr, s) != s )
fatal_error("read failed\n");
#if 0
/* patch CODE segment */
if( *entry >= phdr[i].p_vaddr && *entry < phdr[i].p_vaddr + s ) {
patch_newworld_rom( (char*)phdr[i].p_vaddr, s );
newworld_timer_hack( (char*)phdr[i].p_vaddr, s );
}
#endif
flush_icache_range( addr, addr+s );
/*printk("ELF ROM-section loaded at %08lX (size %08lX)\n",
(unsigned long)phdr[i].p_vaddr, (unsigned long)phdr[i].p_memsz );*/
}
free( phdr );
return lszz_offs;
}
void
*load_elf(char *spec)
{
#if 0
int fd;
void *entry=NULL;
int i, lszz_offs, elf_offs;
char buf[128]; // , *addr;
Elf_ehdr ehdr;
Elf_phdr *phdr;
size_t s;
if( (fd=open_io(spec)) == -1 )
return NULL;
if( (elf_offs=find_elf(fd)) < 0 ) {
printk("----> %s is not an ELF image\n", buf );
return NULL;
}
if( !(phdr=elf_readhdrs(fd, 0, &ehdr)) ) {
printk("elf32_readhdrs failed\n");
return NULL;
}
(unsigned long long *)entry = ehdr.e_entry;
lszz_offs = elf_offs;
for( i=0; i<ehdr.e_phnum; i++ ) {
s = MIN( phdr[i].p_filesz, phdr[i].p_memsz );
seek_io( fd, elf_offs + phdr[i].p_offset );
/* printk("filesz: %08lX memsz: %08lX p_offset: %08lX p_vaddr %08lX\n",
phdr[i].p_filesz, phdr[i].p_memsz, phdr[i].p_offset,
phdr[i].p_vaddr ); */
if( phdr[i].p_vaddr != phdr[i].p_paddr )
printk("WARNING: ELF segment virtual addr != physical addr\n");
lszz_offs = MAX( lszz_offs, elf_offs + phdr[i].p_offset + phdr[i].p_filesz );
if( !s )
continue;
printk("ELF ROM-section loaded at %08lX (size %08lX)\n",
(unsigned long)phdr[i].p_vaddr, (unsigned long)phdr[i].p_memsz);
}
free( phdr );
return entry;
#else
return NULL;
#endif
}
/*--------------------------------------------
| Name: tiny_elfloader
| Description:
| Parameters: none
| Return Type: none
| Comments:
| See:
----------------------------------------------*/
int tiny_elfloader(void){
unsigned long addr=0;
_elf_printf(_lepton_bootstrap_banner);
_elf_printf("compilation date %s-%s\r\n",__kernel_date__,__kernel_time__);
//
if(!(addr=find_elf())) {
_elf_printf("No ELF signature found at 0x%x and 0x%x\r\n",
ELF_MEMORY_ADDRESS_BOOTLOADER, ELF_MEMORY_ADDRESS_APPLICATION);
return 0;
}
//
_tiny_elfloader(addr,0x00000000);
return 0;
}
int
elf_load(struct sys_info *info, ihandle_t dev, const char *cmdline, void **boot_notes)
{
Elf_ehdr ehdr;
Elf_phdr *phdr = NULL;
unsigned long checksum_offset, file_size;
unsigned short checksum = 0;
int retval = -1;
unsigned int offset;
image_name = image_version = NULL;
/* Mark the saved-program-state as invalid */
feval("0 state-valid !");
fd = open_ih(dev);
if (fd == -1) {
goto out;
}
offset = find_elf(&ehdr);
if (!offset) {
retval = LOADER_NOT_SUPPORT;
goto out;
}
#if DEBUG
printk("ELF header:\n");
printk(" ehdr.e_type = %d\n", (int)ehdr.e_type);
printk(" ehdr.e_machine = %d\n", (int)ehdr.e_machine);
printk(" ehdr.e_version = %d\n", (int)ehdr.e_version);
printk(" ehdr.e_entry = 0x%08x\n", (int)ehdr.e_entry);
printk(" ehdr.e_phoff = 0x%08x\n", (int)ehdr.e_phoff);
printk(" ehdr.e_shoff = 0x%08x\n", (int)ehdr.e_shoff);
printk(" ehdr.e_flags = %d\n", (int)ehdr.e_flags);
printk(" ehdr.e_ehsize = 0x%08x\n", (int)ehdr.e_ehsize);
printk(" ehdr.e_phentsize = 0x%08x\n", (int)ehdr.e_phentsize);
printk(" ehdr.e_phnum = %d\n", (int)ehdr.e_phnum);
#endif
if (ehdr.e_phnum > MAX_HEADERS) {
printk ("elfload: too many program headers (MAX_HEADERS)\n");
retval = 0;
goto out;
}
phdr = elf_readhdrs(offset, &ehdr);
if (!phdr)
goto out;
if (!check_mem_ranges(info, phdr, ehdr.e_phnum))
goto out;
checksum_offset = process_image_notes(phdr, ehdr.e_phnum, &checksum, offset);
printf("Loading %s", image_name ? image_name : "image");
if (image_version)
printf(" version %s", image_version);
printf("...\n");
if (!load_segments(phdr, ehdr.e_phnum, checksum_offset, offset, &file_size))
goto out;
if (checksum_offset) {
if (!verify_image(&ehdr, phdr, ehdr.e_phnum, checksum))
goto out;
}
/* If we are attempting an ELF boot image, we pass a non-NULL pointer
into boot_notes and mark the image as elf-boot rather than standard
ELF */
if (boot_notes) {
*boot_notes = (void *)virt_to_phys(build_boot_notes(info, cmdline));
feval("elf-boot saved-program-state >sps.file-type !");
} else {
feval("elf saved-program-state >sps.file-type !");
}
//debug("current time: %lu\n", currticks());
debug("entry point is " FMT_elf "\n", addr_fixup(ehdr.e_entry));
// Initialise saved-program-state
PUSH(addr_fixup(ehdr.e_entry));
feval("saved-program-state >sps.entry !");
PUSH(file_size);
feval("saved-program-state >sps.file-size !");
feval("-1 state-valid !");
out:
close_io(fd);
if (phdr)
free(phdr);
if (image_name)
free(image_name);
if (image_version)
free(image_version);
return retval;
}