MIPS: handle mips64 relocs in mips32 start.S

In preparation for sharing a single copy of start.S between mips32 &
mips64, handle mips64 relocations in the mips32 start.S when built for
mips64.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>

diff --git a/arch/mips/cpu/mips32/start.S b/arch/mips/cpu/mips32/start.S
index 227af6d..699c59a 100644 (file)
--- a/arch/mips/cpu/mips32/start.S
+++ b/arch/mips/cpu/mips32/start.S
@@ -21,6 +21,21 @@
                                CONFIG_SYS_INIT_SP_OFFSET)
 #endif
 
+#ifdef CONFIG_32BIT
+# define MIPS_RELOC    3
+#endif
+
+#ifdef CONFIG_64BIT
+# ifdef CONFIG_SYS_LITTLE_ENDIAN
+#  define MIPS64_R_INFO(ssym, r_type3, r_type2, r_type) \
+       (((r_type) << 24) | ((r_type2) << 16) | ((r_type3) << 8) | (ssym))
+# else
+#  define MIPS64_R_INFO(ssym, r_type3, r_type2, r_type) \
+       ((r_type) | ((r_type2) << 8) | ((r_type3) << 16) | (ssym) << 24)
+# endif
+# define MIPS_RELOC    MIPS64_R_INFO(0x00, 0x00, 0x12, 0x03)
+#endif
+
        /*
         * For the moment disable interrupts, mark the kernel mode and
         * set ST0_KX so that the CPU does not spit fire when using
@@ -264,8 +279,8 @@ in_ram:
 1:
        lw      t8, -4(t1)              # t8 <-- relocation info
 
-       PTR_LI  t3, 3
-       bne     t8, t3, 2f              # skip non R_MIPS_REL32 entries
+       PTR_LI  t3, MIPS_RELOC
+       bne     t8, t3, 2f              # skip non-MIPS_RELOC entries
         nop
 
        PTR_L   t3, -(2 * PTRSIZE)(t1)  # t3 <-- location to fix up in FLASH