The section header address is a VMA whereas the address found in the program header is a physical one. With this change it is possible to load and start a vx7 intel generic based image.
$ readelf -l /tmp/vx7
Elf file type is EXEC (Executable file) Entry point 0x408000 There are 2 program headers, starting at offset 52
Program Headers: Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align LOAD 0x001000 0x00408000 0x00408000 0x04000 0x04000 RWE 0x1000 LOAD 0x005000 0xe040c000 0x0040c000 0x583a84 0x5ccc70 RWE 0x1000
Section to Segment mapping: Segment Sections... 00 .text.locore .data.locore 01 .text .eh_frame .wrs_build_vars .data .tls_data .tls_vars .bss
$ readelf -S /tmp/vx7 There are 13 section headers, starting at offset 0x588af8:
Section Headers: [Nr] Name Type Addr Off Size ES Flg Lk Inf Al [ 0] NULL 00000000 000000 000000 00 0 0 0 [ 1] .text.locore PROGBITS 00408000 001000 00011e 00 AX 0 0 16 [ 2] .data.locore PROGBITS 00409000 002000 003000 00 WA 0 0 4096 [ 3] .text PROGBITS e040c000 005000 4802a0 00 WAX 0 0 32 [ 4] .eh_frame PROGBITS e088c2a0 4852a0 0a1ed0 00 A 0 0 4 [ 5] .wrs_build_vars PROGBITS e092e170 527170 000190 00 Ax 0 0 1 [ 6] .data PROGBITS e092f000 528000 060a70 00 WA 0 0 4096 [ 7] .tls_data PROGBITS e098fa70 588a70 000004 00 A 0 0 4 [ 8] .tls_vars PROGBITS e098fa78 588a78 00000c 00 WA 0 0 4 [ 9] .bss NOBITS e098faa0 588a84 0491d0 00 WA 0 0 32 [10] .shstrtab STRTAB 00000000 588a84 000074 00 0 0 1 [11] .symtab SYMTAB 00000000 588d00 056ee0 10 12 9758 4 [12] .strtab STRTAB 00000000 5dfbe0 05f48a 00 0 0 1 Key to Flags: W (write), A (alloc), X (execute), M (merge), S (strings) I (info), L (link order), G (group), T (TLS), E (exclude), x (unknown) O (extra OS processing required) o (OS specific), p (processor specific)
Signed-off-by: Christian Gmeiner christian.gmeiner@gmail.com --- cmd/elf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/cmd/elf.c b/cmd/elf.c index 5190cc6..445daa0 100644 --- a/cmd/elf.c +++ b/cmd/elf.c @@ -376,7 +376,7 @@ int do_bootvx(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) * binary image. */ if (valid_elf_image(addr)) - addr = load_elf_image_shdr(addr); + addr = load_elf_image_phdr(addr); else puts("## Not an ELF image, assuming binary\n");