diff options
Diffstat (limited to 'arch/mips/cpu/mips64/start.S')
| -rw-r--r-- | arch/mips/cpu/mips64/start.S | 40 |
1 files changed, 12 insertions, 28 deletions
diff --git a/arch/mips/cpu/mips64/start.S b/arch/mips/cpu/mips64/start.S index 2b8d531e73..15225945e9 100644 --- a/arch/mips/cpu/mips64/start.S +++ b/arch/mips/cpu/mips64/start.S @@ -137,8 +137,7 @@ reset: #endif /* Set up temporary stack */ - dli t0, CONFIG_SYS_SDRAM_BASE + CONFIG_SYS_INIT_SP_OFFSET - dla sp, 0(t0) + dli sp, CONFIG_SYS_SDRAM_BASE + CONFIG_SYS_INIT_SP_OFFSET dla t9, board_init_f jr t9 @@ -159,55 +158,41 @@ reset: relocate_code: move sp, a0 # set new stack pointer + move s0, a1 # save gd in s0 + move s2, a2 # save destination address in s2 + dli t0, CONFIG_SYS_MONITOR_BASE + dsub s1, s2, t0 # s1 <-- relocation offset + dla t3, in_ram ld t2, -24(t3) # t2 <-- uboot_end_data move t1, a2 - move s2, a2 # s2 <-- destination address - /* - * Fix $gp: - * - * New $gp = (Old $gp - CONFIG_SYS_MONITOR_BASE) + Destination Address - */ - move t8, gp - dsub gp, CONFIG_SYS_MONITOR_BASE - dadd gp, a2 # gp now adjusted - dsub s1, gp, t8 # s1 <-- relocation offset + dadd gp, s1 # adjust gp /* * t0 = source address * t1 = target address * t2 = source end address */ - - /* - * Save destination address and size for dlater usage in flush_cache() - */ - move s0, a1 # save gd in s0 - move a0, t1 # a0 <-- destination addr - dsub a1, t2, t0 # a1 <-- size - 1: lw t3, 0(t0) sw t3, 0(t1) daddu t0, 4 - ble t0, t2, 1b + blt t0, t2, 1b daddu t1, 4 /* If caches were enabled, we would have to flush them here. */ - - /* a0 & a1 are already set up for flush_cache(start, size) */ + dsub a1, t1, s2 # a1 <-- size dla t9, flush_cache jalr t9 - nop + move a0, s2 # a0 <-- destination address /* Jump to where we've relocated ourselves */ daddi t0, s2, in_ram - _start jr t0 nop - .dword _gp .dword _GLOBAL_OFFSET_TABLE_ .dword uboot_end_data .dword uboot_end @@ -222,9 +207,7 @@ in_ram: */ ld t3, -8(t0) # t3 <-- num_got_entries ld t8, -32(t0) # t8 <-- _GLOBAL_OFFSET_TABLE_ - ld t9, -40(t0) # t9 <-- _gp - dsub t8, t9 # compute offset - dadd t8, t8, gp # t8 now holds relocated _G_O_T_ + dadd t8, s1 # t8 now holds relocated _G_O_T_ daddi t8, t8, 16 # skipping first two entries dli t2, 2 1: @@ -259,3 +242,4 @@ in_ram: /* Exception handlers */ romReserved: b romReserved + nop |