Drop support for CONFIG_SYS_ARM_WITHOUT_RELOC

When this define was introduced, the idea was to provide a soft
migration path for ARM boards to get adapted to the new relocation
support.  However, other recent changes led to a different
implementation (ELF relocation), where this no longer works.  By now
CONFIG_SYS_ARM_WITHOUT_RELOC does not only not help any more, but it
actually hurts because it obfuscates the actual code by sprinkling it
with lots of dead and non-working debris.

So let's make a clean cut and drop CONFIG_SYS_ARM_WITHOUT_RELOC.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Tested-by: Heiko Schocher <hs@denx.de>
Tested-by: Reinhard Meyer <u-boot@emk-elektronik.de>

1 files changed, 0 insertions, 214 deletions

diff --git a/arch/arm/cpu/arm1176/start.S b/arch/arm/cpu/arm1176/start.S
index 7f32db7..1a2e5aa 100644
--- a/arch/arm/cpu/arm1176/start.S
+++ b/arch/arm/cpu/arm1176/start.S
@@ -108,12 +108,6 @@ _TEXT_BASE:
 _TEXT_PHY_BASE:
 	.word	CONFIG_SYS_PHY_UBOOT_BASE
 
-#if defined(CONFIG_SYS_ARM_WITHOUT_RELOC)
-.globl _armboot_start
-_armboot_start:
-	.word _start
-#endif
-
 /*
  * These are defined in the board-specific linker script.
  * Subtracting _start from them lets the linker put their
@@ -157,7 +151,6 @@ _rel_dyn_end_ofs:
 _dynsym_start_ofs:
 	.word __dynsym_start - _start
 
-#if !defined(CONFIG_SYS_ARM_WITHOUT_RELOC)
 /* IRQ stack memory (calculated at run-time) + 8 bytes */
 .globl IRQ_STACK_START_IN
 IRQ_STACK_START_IN:
@@ -419,188 +412,6 @@ _board_init_r_ofs:
 	.word board_init_r - _start
 #endif
 
-#else /* #if !defined(CONFIG_SYS_ARM_WITHOUT_RELOC) */
-
-/*
- * the actual reset code
- */
-
-reset:
-	/*
-	 * set the cpu to SVC32 mode
-	 */
-	mrs	r0, cpsr
-	bic	r0, r0, #0x3f
-	orr	r0, r0, #0xd3
-	msr	cpsr, r0
-
-/*
- *************************************************************************
- *
- * CPU_init_critical registers
- *
- * setup important registers
- * setup memory timing
- *
- *************************************************************************
- */
-	/*
-	 * we do sys-critical inits only at reboot,
-	 * not when booting from ram!
-	 */
-cpu_init_crit:
-	/*
-	 * When booting from NAND - it has definitely been a reset, so, no need
-	 * to flush caches and disable the MMU
-	 */
-#ifndef CONFIG_NAND_SPL
-	/*
-	 * flush v4 I/D caches
-	 */
-	mov	r0, #0
-	mcr	p15, 0, r0, c7, c7, 0	/* flush v3/v4 cache */
-	mcr	p15, 0, r0, c8, c7, 0	/* flush v4 TLB */
-
-	/*
-	 * disable MMU stuff and caches
-	 */
-	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
-
-	/* Prepare to disable the MMU */
-	adr	r2, mmu_disable_phys
-	sub	r2, r2, #(CONFIG_SYS_PHY_UBOOT_BASE - CONFIG_SYS_TEXT_BASE)
-	b	mmu_disable
-
-	.align 5
-	/* Run in a single cache-line */
-mmu_disable:
-	mcr	p15, 0, r0, c1, c0, 0
-	nop
-	nop
-	mov	pc, r2
-mmu_disable_phys:
-
-#ifdef CONFIG_DISABLE_TCM
-	/*
-	 * Disable the TCMs
-	 */
-	mrc	p15, 0, r0, c0, c0, 2	/* Return TCM details */
-	cmp	r0, #0
-	beq	skip_tcmdisable
-	mov	r1, #0
-	mov	r2, #1
-	tst	r0, r2
-	mcrne	p15, 0, r1, c9, c1, 1	/* Disable Instruction TCM if present*/
-	tst	r0, r2, LSL #16
-	mcrne	p15, 0, r1, c9, c1, 0	/* Disable Data TCM if present*/
-skip_tcmdisable:
-#endif
-#endif
-
-#ifdef CONFIG_PERIPORT_REMAP
-	/* Peri port setup */
-	ldr	r0, =CONFIG_PERIPORT_BASE
-	orr	r0, r0, #CONFIG_PERIPORT_SIZE
-	mcr	p15,0,r0,c15,c2,4
-#endif
-
-	/*
-	 * Go setup Memory and board specific bits prior to relocation.
-	 */
-	bl	lowlevel_init		/* go setup pll,mux,memory */
-
-#ifndef CONFIG_SKIP_RELOCATE_UBOOT
-relocate:				/* relocate U-Boot to RAM	    */
-	adr	r0, _start		/* r0 <- current position of code   */
-	ldr	r1, _TEXT_BASE		/* test if we run from flash or RAM */
-	cmp     r0, r1                  /* don't reloc during debug         */
-	beq     stack_setup
-
-	ldr	r2, _armboot_start
-	ldr	r3, _bss_start
-	sub	r2, r3, r2		/* r2 <- size of armboot            */
-	add	r2, r0, r2		/* r2 <- source end address         */
-
-copy_loop:
-	ldmia	r0!, {r3-r10}		/* copy from source address [r0]    */
-	stmia	r1!, {r3-r10}		/* copy to   target address [r1]    */
-	cmp	r0, r2			/* until source end address [r2]    */
-	blo	copy_loop
-#endif	/* CONFIG_SKIP_RELOCATE_UBOOT */
-
-#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
-
-	/* Set up the stack						    */
-stack_setup:
-	ldr	r0, =CONFIG_SYS_UBOOT_BASE	/* base of copy in DRAM	    */
-	sub	r0, r0, #CONFIG_SYS_MALLOC_LEN	/* malloc area                      */
-	sub	r0, r0, #GENERATED_GBL_DATA_SIZE /* bdinfo                        */
-	sub	sp, r0, #12		/* leave 3 words for abort-stack    */
-	bic	sp, sp, #7		/* 8-byte alignment for ABI compliance */
-
-clear_bss:
-	ldr	r0, _bss_start		/* find start of bss segment        */
-	ldr	r1, _bss_end		/* stop here                        */
-	mov 	r2, #0			/* clear                            */
-
-clbss_l:
-	str	r2, [r0]		/* clear loop...                    */
-	add	r0, r0, #4
-	cmp	r0, r1
-	blo	clbss_l
-
-#ifndef CONFIG_NAND_SPL
-	ldr	pc, _start_armboot
-
-_start_armboot:
-	.word start_armboot
-#else
-	b	nand_boot
-/*	.word nand_boot*/
-#endif
-
-#endif /* #if !defined(CONFIG_SYS_ARM_WITHOUT_RELOC) */
-
 #ifdef CONFIG_ENABLE_MMU
 _mmu_table_base:
 	.word mmu_table
@@ -687,14 +498,7 @@ phy_last_jump:
 	/* Save user registers (now in svc mode) r0-r12 */
 	stmia	sp, {r0 - r12}
 
-#if defined(CONFIG_SYS_ARM_WITHOUT_RELOC)
-	ldr	r2, _armboot_start
-	sub	r2, r2, #(CONFIG_SYS_MALLOC_LEN)
-	/* set base 2 words into abort stack */
-	sub	r2, r2, #(GENERATED_GBL_DATA_SIZE+8)
-#else
 	ldr	r2, IRQ_STACK_START_IN
-#endif
 	/* get values for "aborted" pc and cpsr (into parm regs) */
 	ldmia	r2, {r2 - r3}
 	/* grab pointer to old stack */
@@ -709,16 +513,7 @@ phy_last_jump:
 	.endm
 
 	.macro get_bad_stack
-#if defined(CONFIG_SYS_ARM_WITHOUT_RELOC)
-	/* setup our mode stack (enter in banked mode) */
-	ldr	r13, _armboot_start
-	/* move past malloc pool */
-	sub	r13, r13, #(CONFIG_SYS_MALLOC_LEN)
-	/* move to reserved a couple spots for abort stack */
-	sub	r13, r13, #(GENERATED_GBL_DATA_SIZE + 8)
-#else
 	ldr	r13, IRQ_STACK_START_IN		@ setup our mode stack
-#endif
 
 	/* save caller lr in position 0 of saved stack */
 	str	lr, [r13]
@@ -743,16 +538,7 @@ phy_last_jump:
 	sub	r13, r13, #4
 	/* save R0's value. */
 	str	r0, [r13]
-#if defined(CONFIG_SYS_ARM_WITHOUT_RELOC)
-	/* get data regions start */
-	ldr	r0, _armboot_start
-	/* move past malloc pool */
-	sub	r0, r0, #(CONFIG_SYS_MALLOC_LEN)
-	/* move past gbl and a couple spots for abort stack */
-	sub	r0, r0, #(GENERATED_GBL_DATA_SIZE + 8)
-#else
 	ldr	r13, IRQ_STACK_START_IN		@ setup our mode stack
-#endif
 	/* save caller lr in position 0 of saved stack */
 	str	lr, [r0]
 	/* get the spsr */