arm1176: Remove unused MMU setup from start.S

Following the removal of the smdk6400 board, the MMU setup code in
arm1176/start.S becomes unused, so remove it. It will still be possible to
restore it later from the Git history if necessary, in which case it should be
moved out of the relocate_code() function.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>

diff --git a/arch/arm/cpu/arm1176/start.S b/arch/arm/cpu/arm1176/start.S
index a7cf728ff199f58d0dcb85233da3931fad4a9c30..1fc1da071b4cb09fb0b1a87ac2bf387729071309 100644 (file)
--- a/arch/arm/cpu/arm1176/start.S
+++ b/arch/arm/cpu/arm1176/start.S
@@ -33,11 +33,8 @@
 #include <asm-offsets.h>
 #include <config.h>
 #include <version.h>
-#ifdef CONFIG_ENABLE_MMU
-#include <asm/proc/domain.h>
-#endif
 
-#if !defined(CONFIG_ENABLE_MMU) && !defined(CONFIG_SYS_PHY_UBOOT_BASE)
+#ifndef CONFIG_SYS_PHY_UBOOT_BASE
 #define CONFIG_SYS_PHY_UBOOT_BASE      CONFIG_SYS_UBOOT_BASE
 #endif
 
@@ -104,14 +101,6 @@ _TEXT_BASE:
        .word   CONFIG_SYS_TEXT_BASE
 #endif
 
-/*
- * Below variable is very important because we use MMU in U-Boot.
- * Without it, we cannot run code correctly before MMU is ON.
- * by scsuh.
- */
-_TEXT_PHY_BASE:
-       .word   CONFIG_SYS_PHY_UBOOT_BASE
-
 /*
  * These are defined in the board-specific linker script.
  * Subtracting _start from them lets the linker put their
@@ -298,44 +287,6 @@ fixnext:
        blo     fixloop
 #endif
 
-#ifdef CONFIG_ENABLE_MMU
-enable_mmu:
-       /* enable domain access */
-       ldr     r5, =0x0000ffff
-       mcr     p15, 0, r5, c3, c0, 0   /* load domain access register */
-
-       /* Set the TTB register */
-       ldr     r0, _mmu_table_base
-       ldr     r1, =CONFIG_SYS_PHY_UBOOT_BASE
-       ldr     r2, =0xfff00000
-       bic     r0, r0, r2
-       orr     r1, r0, r1
-       mcr     p15, 0, r1, c2, c0, 0
-
-       /* Enable the MMU */
-       mrc     p15, 0, r0, c1, c0, 0
-       orr     r0, r0, #1              /* Set CR_M to enable MMU */
-
-       /* Prepare to enable the MMU */
-       adr     r1, skip_hw_init
-       and     r1, r1, #0x3fc
-       ldr     r2, _TEXT_BASE
-       ldr     r3, =0xfff00000
-       and     r2, r2, r3
-       orr     r2, r2, r1
-       b       mmu_enable
-
-       .align 5
-       /* Run in a single cache-line */
-mmu_enable:
-
-       mcr     p15, 0, r0, c1, c0, 0
-       nop
-       nop
-       mov     pc, r2
-skip_hw_init:
-#endif
-
 relocate_done:
 
        bx      lr
@@ -347,52 +298,12 @@ _rel_dyn_end_ofs:
 _dynsym_start_ofs:
        .word __dynsym_start - _start
 
-#ifdef CONFIG_ENABLE_MMU
-_mmu_table_base:
-       .word mmu_table
-#endif
-
        .globl  c_runtime_cpu_setup
 c_runtime_cpu_setup:
 
        mov     pc, lr
 
 #ifndef CONFIG_SPL_BUILD
-/*
- * we assume that cache operation is done before. (eg. cleanup_before_linux())
- * actually, we don't need to do anything about cache if not use d-cache in
- * U-Boot. So, in this function we clean only MMU. by scsuh
- *
- * void        theLastJump(void *kernel, int arch_num, uint boot_params);
- */
-#ifdef CONFIG_ENABLE_MMU
-       .globl theLastJump
-theLastJump:
-       mov     r9, r0
-       ldr     r3, =0xfff00000
-       ldr     r4, _TEXT_PHY_BASE
-       adr     r5, phy_last_jump
-       bic     r5, r5, r3
-       orr     r5, r5, r4
-       mov     pc, r5
-phy_last_jump:
-       /*
-        * disable MMU stuff
-        */
-       mrc     p15, 0, r0, c1, c0, 0
-       bic     r0, r0, #0x00002300     /* clear bits 13, 9:8 (--V- --RS) */
-       bic     r0, r0, #0x00000087     /* clear bits 7, 2:0 (B--- -CAM) */
-       orr     r0, r0, #0x00000002     /* set bit 2 (A) Align */
-       orr     r0, r0, #0x00001000     /* set bit 12 (I) I-Cache */
-       mcr     p15, 0, r0, c1, c0, 0
-
-       mcr     p15, 0, r0, c8, c7, 0   /* flush v4 TLB */
-
-       mov     r0, #0
-       mov     pc, r9
-#endif
-
-
 /*
  *************************************************************************
  *