[U-Boot] [PATCH] elf: use program header for loading

[Christian Gmeiner]

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 at 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");
 
-- 
2.7.4