MIPS: make size of relocation table fixed but configurable

Currently the size of the relocation table will be shrunk
to the actual size needed. Although this gives a maximal
space saving, it messes up the _end symbol. This breaks
features like appended DTBs because the _end symbol doesn't
point to the real end of the U-Boot binary.

Remove the size shrinking and make the size of the relocation
table fixed but configurable. This follows the Linux approach
and the user can adjust the size to his needs.

Also rename the relocation table section from .rel to .data.reloc
to follow the Linux approach and to avoid ambiguities with the
.rel.* sections added by the linker.

Reported-by: Lars Povlsen <lars.povlsen@microsemi.com>
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 071dea0..6d646ef 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -248,6 +248,24 @@ config MIPS_CACHE_INDEX_BASE
 	  Normally this is CKSEG0. If the MIPS system needs to move this block
 	  to some SRAM or ScratchPad RAM, adapt this option accordingly.
 
+config MIPS_RELOCATION_TABLE_SIZE
+	hex "Relocation table size"
+	range 0x100 0x10000
+	default "0x8000"
+	---help---
+	  A table of relocation data will be appended to the U-Boot binary
+	  and parsed in relocate_code() to fix up all offsets in the relocated
+	  U-Boot.
+
+	  This option allows the amount of space reserved for the table to be
+	  adjusted in a range from 256 up to 64k. The default is 32k and should
+	  be ok in most cases. Reduce this value to shrink the size of U-Boot
+	  binary.
+
+	  The build will fail and a valid size suggested if this is too small.
+
+	  If unsure, leave at the default value.
+
 endmenu
 
 menu "OS boot interface"