rockchip: make_fit_atf: use elf entry point

make_fit_atf.py uses physical address of first segment as the
entry point to bl31. It is incorrect and causes following abort
when bl31_entry() is called:

U-Boot SPL board initTrying to boot from MMC1
"Synchronous Abort" handler, esr 0x02000000
elr: 0000000000000000 lr : 00000000ff8c7e8c
x 0: 00000000ff8e0000 x 1: 0000000000000000
x 2: 0000000000000000 x 3: 00000000ff8e0180
x 4: 0000000000000000 x 5: 0000000000000000
x 6: 0000000000000030 x 7: 00000000ff8e0188
x 8: 00000000000001e0 x 9: 0000000000000000
x10: 000000000007fcdc x11: 00000000002881b8
x12: 00000000000001a2 x13: 0000000000000198
x14: 000000000007fdcc x15: 00000000002881b8
x16: 00000000003c0724 x17: 00000000003c0718
x18: 000000000007fe80 x19: 00000000ff8e0000
x20: 0000000000200000 x21: 00000000ff8e0000
x22: 0000000000000000 x23: 000000000007fe30
x24: 00000000ff8d1c3c x25: 00000000ff8d5000
x26: 00000000deadbeef x27: 00000000000004a0
x28: 000000000000009c x29: 000000000007fd90

Fix it by using the entry point from the elf header.

Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@suse.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>

arch/arm/mach-rockchip/make_fit_atf.py

@@ -53,7 +53,7 @@ DT_END="""
 };
 """
 
-def append_atf_node(file, atf_index, phy_addr):
+def append_atf_node(file, atf_index, phy_addr, elf_entry):
     """
     Append ATF DT node to input FIT dts file.
     """
@@ -67,7 +67,7 @@ def append_atf_node(file, atf_index, phy_addr):
     print >> file, '\t\t\tcompression = "none";'
     print >> file, '\t\t\tload = <0x%08x>;' % phy_addr
     if atf_index == 1:
-        print >> file, '\t\t\tentry = <0x%08x>;' % phy_addr
+        print >> file, '\t\t\tentry = <0x%08x>;' % elf_entry
     print >> file, '\t\t};'
     print >> file, ''
 
@@ -141,12 +141,13 @@ def generate_atf_fit_dts(fit_file_name, bl31_file_name, uboot_file_name, dtbs_fi
 
     with open(bl31_file_name) as bl31_file:
         bl31 = ELFFile(bl31_file)
+        elf_entry = bl31.header['e_entry']
         for i in range(bl31.num_segments()):
             seg = bl31.get_segment(i)
             if ('PT_LOAD' == seg.__getitem__(ELF_SEG_P_TYPE)):
                 paddr = seg.__getitem__(ELF_SEG_P_PADDR)
                 p= seg.__getitem__(ELF_SEG_P_PADDR)
-                append_atf_node(fit_file, i+1, paddr)
+                append_atf_node(fit_file, i+1, paddr, elf_entry)
     atf_cnt = i+1
     append_fdt_node(fit_file, dtbs_file_name)
     print >> fit_file, '%s' % DT_IMAGES_NODE_END