[mask_rom] Remove duplicate register clearing code
The registers are cleared earlier in the code to ensure a clean
device state. It is not necessary to clear them again before
jumping to the main function.
Signed-off-by: Michael Munday <mike.munday@lowrisc.org>
diff --git a/sw/device/silicon_creator/mask_rom/mask_rom_start.S b/sw/device/silicon_creator/mask_rom/mask_rom_start.S
index 1da2fb0..0bc9170 100644
--- a/sw/device/silicon_creator/mask_rom/mask_rom_start.S
+++ b/sw/device/silicon_creator/mask_rom/mask_rom_start.S
@@ -252,25 +252,6 @@
la a1, _bss_end
call crt_section_clear
- // Re-clobber all of the temporary registers (may have been used in calls).
- li t0, 0x0
- li t1, 0x0
- li t2, 0x0
- li t3, 0x0
- li t4, 0x0
- li t5, 0x0
- li t6, 0x0
-
- // Re-clobber all of the argument registers (may have been used in calls).
- li a0, 0x0
- li a1, 0x0
- li a2, 0x0
- li a3, 0x0
- li a4, 0x0
- li a5, 0x0
- li a6, 0x0
- li a7, 0x0
-
// Setup global pointer.
//
// This requires that we disable linker relaxations, or it will be relaxed to
