14 files changed, 310 insertions, 21 deletions

diff --git a/arch/arm/cpu/arm926ejs/orion5x/dram.c b/arch/arm/cpu/arm926ejs/orion5x/dram.c
index c719798..c5c8ab7 100644
--- a/arch/arm/cpu/arm926ejs/orion5x/dram.c
+++ b/arch/arm/cpu/arm926ejs/orion5x/dram.c
@@ -49,7 +49,7 @@ u32 orion5x_sdram_bar(enum memory_bank bank)
 	result = winregs[bank].base;
 	return result;
 }
-
+#if defined(CONFIG_SYS_ARM_WITHOUT_RELOC)
 int dram_init(void)
 {
 	int i;
@@ -62,3 +62,25 @@ int dram_init(void)
 	}
 	return 0;
 }
+#else
+int dram_init (void)
+{
+	/* dram_init must store complete ramsize in gd->ram_size */
+	gd->ram_size = get_ram_size(
+			(volatile long *) orion5x_sdram_bar(0),
+			CONFIG_MAX_RAM_BANK_SIZE);
+	return 0;
+}
+
+void dram_init_banksize (void)
+{
+	int i;
+
+	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
+		gd->bd->bi_dram[i].start = orion5x_sdram_bar(i);
+		gd->bd->bi_dram[i].size = get_ram_size(
+			(volatile long *) (gd->bd->bi_dram[i].start),
+			CONFIG_MAX_RAM_BANK_SIZE);
+	}
+}
+#endif
diff --git a/arch/arm/cpu/arm926ejs/start.S b/arch/arm/cpu/arm926ejs/start.S
index cf40ce1..16ee972 100644
--- a/arch/arm/cpu/arm926ejs/start.S
+++ b/arch/arm/cpu/arm926ejs/start.S
@@ -114,12 +114,15 @@ _fiq:
  *************************************************************************
  */
 
+.globl _TEXT_BASE
 _TEXT_BASE:
 	.word	TEXT_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.
@@ -144,6 +147,35 @@ FIQ_STACK_START:
 	.word 0x0badc0de
 #endif
 
+#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:
+	.word	0x0badc0de
+
+.globl _datarel_start
+_datarel_start:
+	.word __datarel_start
+
+.globl _datarelrolocal_start
+_datarelrolocal_start:
+	.word __datarelrolocal_start
+
+.globl _datarellocal_start
+_datarellocal_start:
+	.word __datarellocal_start
+
+.globl _datarelro_start
+_datarelro_start:
+	.word __datarelro_start
+
+.globl _got_start
+_got_start:
+	.word __got_start
+
+.globl _got_end
+_got_end:
+	.word __got_end
 
 /*
  * the actual reset code
@@ -166,6 +198,135 @@ reset:
 	bl	cpu_init_crit
 #endif
 
+/* Set stackpointer in internal RAM to call board_init_f */
+call_board_init_f:
+	ldr	sp, =(CONFIG_SYS_INIT_SP_ADDR)
+	ldr	r0,=0x00000000
+	bl	board_init_f
+
+/*------------------------------------------------------------------------------*/
+
+/*
+ * void relocate_code (addr_sp, gd, addr_moni)
+ *
+ * This "function" does not return, instead it continues in RAM
+ * after relocating the monitor code.
+ *
+ */
+	.globl	relocate_code
+relocate_code:
+	mov	r4, r0	/* save addr_sp */
+	mov	r5, r1	/* save addr of gd */
+	mov	r6, r2	/* save addr of destination */
+	mov	r7, r2	/* save addr of destination */
+
+	/* Set up the stack						    */
+stack_setup:
+	mov	sp, r4
+
+	adr	r0, _start
+	ldr	r2, _TEXT_BASE
+	ldr	r3, _bss_start
+	sub	r2, r3, r2		/* r2 <- size of armboot	    */
+	add	r2, r0, r2		/* r2 <- source end address	    */
+	cmp	r0, r6
+	beq	clear_bss
+
+#ifndef CONFIG_SKIP_RELOCATE_UBOOT
+copy_loop:
+	ldmia	r0!, {r9-r10}		/* copy from source address [r0]    */
+	stmia	r6!, {r9-r10}		/* copy to   target address [r1]    */
+	cmp	r0, r2			/* until source end addreee [r2]    */
+	ble	copy_loop
+
+#ifndef CONFIG_PRELOADER
+	/* fix got entries */
+	ldr	r1, _TEXT_BASE		/* Text base */
+	mov	r0, r7			/* reloc addr */
+	ldr	r2, _got_start		/* addr in Flash */
+	ldr	r3, _got_end		/* addr in Flash */
+	sub	r3, r3, r1
+	add	r3, r3, r0
+	sub	r2, r2, r1
+	add	r2, r2, r0
+
+fixloop:
+	ldr	r4, [r2]
+	sub	r4, r4, r1
+	add	r4, r4, r0
+	str	r4, [r2]
+	add	r2, r2, #4
+	cmp	r2, r3
+	bne	fixloop
+#endif
+#endif	/* #ifndef CONFIG_SKIP_RELOCATE_UBOOT */
+
+clear_bss:
+#ifndef CONFIG_PRELOADER
+	ldr	r0, _bss_start
+	ldr	r1, _bss_end
+	ldr	r3, _TEXT_BASE		/* Text base */
+	mov	r4, r7			/* reloc addr */
+	sub	r0, r0, r3
+	add	r0, r0, r4
+	sub	r1, r1, r3
+	add	r1, r1, r4
+	mov	r2, #0x00000000		/* clear			    */
+
+clbss_l:str	r2, [r0]		/* clear loop...		    */
+	add	r0, r0, #4
+	cmp	r0, r1
+	bne	clbss_l
+
+	bl coloured_LED_init
+	bl red_LED_on
+#endif
+
+/*
+ * We are done. Do not return, instead branch to second part of board
+ * initialization, now running from RAM.
+ */
+#ifdef CONFIG_NAND_SPL
+	ldr     pc, _nand_boot
+
+_nand_boot: .word nand_boot
+#else
+	ldr	r0, _TEXT_BASE
+	ldr	r2, _board_init_r
+	sub	r2, r2, r0
+	add	r2, r2, r7	/* position from board_init_r in RAM */
+	/* setup parameters for board_init_r */
+	mov	r0, r5		/* gd_t */
+	mov	r1, r7		/* dest_addr */
+	/* jump to it ... */
+	mov	lr, r2
+	mov	pc, lr
+
+_board_init_r: .word board_init_r
+#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,#0x1f
+	orr	r0,r0,#0xd3
+	msr	cpsr,r0
+
+	/*
+	 * we do sys-critical inits only at reboot,
+	 * not when booting from ram!
+	 */
+#ifndef CONFIG_SKIP_LOWLEVEL_INIT
+	bl	cpu_init_crit
+#endif
+
 #ifndef CONFIG_SKIP_RELOCATE_UBOOT
 relocate:				/* relocate U-Boot to RAM	    */
 	adr	r0, _start		/* r0 <- current position of code   */
@@ -221,7 +382,7 @@ _start_armboot:
 #else
 	.word start_armboot
 #endif /* CONFIG_NAND_SPL */
-
+#endif /* #if !defined(CONFIG_SYS_ARM_WITHOUT_RELOC) */
 
 /*
  *************************************************************************
@@ -307,10 +468,13 @@ cpu_init_crit:
 	@ carve out a frame on current user stack
 	sub	sp, sp, #S_FRAME_SIZE
 	stmia	sp, {r0 - r12}	@ Save user registers (now in svc mode) r0-r12
-
+#if defined(CONFIG_SYS_ARM_WITHOUT_RELOC)
 	ldr	r2, _armboot_start
 	sub	r2, r2, #(CONFIG_STACKSIZE+CONFIG_SYS_MALLOC_LEN)
 	sub	r2, r2, #(CONFIG_SYS_GBL_DATA_SIZE+8)  @ set base 2 words into abort stack
+#else
+	ldr	r2, IRQ_STACK_START_IN
+#endif
 	@ get values for "aborted" pc and cpsr (into parm regs)
 	ldmia	r2, {r2 - r3}
 	add	r0, sp, #S_FRAME_SIZE		@ grab pointer to old stack
@@ -342,9 +506,13 @@ cpu_init_crit:
 	.endm
 
 	.macro get_bad_stack
+#if defined(CONFIG_SYS_ARM_WITHOUT_RELOC)
 	ldr	r13, _armboot_start		@ setup our mode stack
 	sub	r13, r13, #(CONFIG_STACKSIZE+CONFIG_SYS_MALLOC_LEN)
 	sub	r13, r13, #(CONFIG_SYS_GBL_DATA_SIZE+8) @ reserved a couple spots in abort stack
+#else
+	ldr	r13, IRQ_STACK_START_IN		@ setup our mode stack
+#endif
 
 	str	lr, [r13]	@ save caller lr in position 0 of saved stack
 	mrs	lr, spsr	@ get the spsr
diff --git a/arch/arm/cpu/arm926ejs/u-boot.lds b/arch/arm/cpu/arm926ejs/u-boot.lds
index ecbc58c..02eb8ca 100644
--- a/arch/arm/cpu/arm926ejs/u-boot.lds
+++ b/arch/arm/cpu/arm926ejs/u-boot.lds
@@ -39,11 +39,23 @@ SECTIONS
 	.rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) }
 
 	. = ALIGN(4);
-	.data : { *(.data) }
+	.data : {
+		*(.data)
+	__datarel_start = .;
+		*(.data.rel)
+	__datarelrolocal_start = .;
+		*(.data.rel.ro.local)
+	__datarellocal_start = .;
+		*(.data.rel.local)
+	__datarelro_start = .;
+		*(.data.rel.ro)
+	}
 
+	__got_start = .;
 	. = ALIGN(4);
 	.got : { *(.got) }
 
+	__got_end = .;
 	. = .;
 	__u_boot_cmd_start = .;
 	.u_boot_cmd : { *(.u_boot_cmd) }
diff --git a/board/karo/tx25/config.mk b/board/karo/tx25/config.mk
index 732a14a..51ca1ab 100644
--- a/board/karo/tx25/config.mk
+++ b/board/karo/tx25/config.mk
@@ -1,5 +1,5 @@
 ifdef CONFIG_NAND_SPL
-TEXT_BASE = 0x81ec0000
+TEXT_BASE = 0x810c0000
 else
-TEXT_BASE = 0x81f00000
+TEXT_BASE = 0x81fc0000
 endif
diff --git a/board/karo/tx25/tx25.c b/board/karo/tx25/tx25.c
index 2608698..dc57d5c 100644
--- a/board/karo/tx25/tx25.c
+++ b/board/karo/tx25/tx25.c
@@ -159,7 +159,14 @@ int board_late_init(void)
 
 int dram_init (void)
 {
+	/* dram_init must store complete ramsize in gd->ram_size */
+	gd->ram_size = get_ram_size((volatile void *)PHYS_SDRAM_1,
+				PHYS_SDRAM_1_SIZE);
+	return 0;
+}
 
+void dram_init_banksize(void)
+{
 	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
 	gd->bd->bi_dram[0].size = get_ram_size((volatile void *)PHYS_SDRAM_1,
 			PHYS_SDRAM_1_SIZE);
@@ -167,9 +174,9 @@ int dram_init (void)
 	gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
 	gd->bd->bi_dram[1].size = get_ram_size((volatile void *)PHYS_SDRAM_2,
 			PHYS_SDRAM_2_SIZE);
-#endif
+#else
 
-	return 0;
+#endif
 }
 
 int checkboard(void)
diff --git a/board/keymile/km_arm/km_arm.c b/board/keymile/km_arm/km_arm.c
index d7cbd7a..7c0b858 100644
--- a/board/keymile/km_arm/km_arm.c
+++ b/board/keymile/km_arm/km_arm.c
@@ -225,6 +225,7 @@ U_BOOT_CMD(
 	);
 #endif
 
+#if defined(CONFIG_SYS_ARM_WITHOUT_RELOC)
 int dram_init(void)
 {
 	int i;
@@ -234,9 +235,32 @@ int dram_init(void)
 		gd->bd->bi_dram[i].size = get_ram_size((long *)kw_sdram_bar(i),
 						       kw_sdram_bs(i));
 	}
+
+	return 0;
+}
+#else
+int dram_init(void)
+{
+	/* dram_init must store complete ramsize in gd->ram_size */
+	/* Fix this */
+	gd->ram_size = get_ram_size((volatile void *)kw_sdram_bar(0),
+				kw_sdram_bs(0));
 	return 0;
 }
 
+void dram_init_banksize(void)
+{
+	int i;
+
+	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
+		gd->bd->bi_dram[i].start = kw_sdram_bar(i);
+		gd->bd->bi_dram[i].size = kw_sdram_bs(i);
+		gd->bd->bi_dram[i].size = get_ram_size((long *)kw_sdram_bar(i),
+						       kw_sdram_bs(i));
+	}
+}
+#endif
+
 /* Configure and enable MV88E1118 PHY */
 void reset_phy(void)
 {
diff --git a/board/logicpd/imx27lite/config.mk b/board/logicpd/imx27lite/config.mk
index a2e7768..2f9c4e6 100644
--- a/board/logicpd/imx27lite/config.mk
+++ b/board/logicpd/imx27lite/config.mk
@@ -1 +1 @@
-TEXT_BASE = 0xA7F00000
+TEXT_BASE = 0xc0000000
diff --git a/board/logicpd/imx27lite/imx27lite.c b/board/logicpd/imx27lite/imx27lite.c
index 4427415..6eb5cc2 100644
--- a/board/logicpd/imx27lite/imx27lite.c
+++ b/board/logicpd/imx27lite/imx27lite.c
@@ -66,19 +66,22 @@ int board_init (void)
 
 int dram_init (void)
 {
+	/* dram_init must store complete ramsize in gd->ram_size */
+	gd->ram_size = get_ram_size((volatile void *)CONFIG_SYS_SDRAM_BASE,
+				PHYS_SDRAM_1_SIZE);
+	return 0;
+}
 
-#if CONFIG_NR_DRAM_BANKS > 0
-	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
-	gd->bd->bi_dram[0].size = get_ram_size((volatile void *)PHYS_SDRAM_1,
+void dram_init_banksize(void)
+{
+	gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
+	gd->bd->bi_dram[0].size = get_ram_size((volatile void *)CONFIG_SYS_SDRAM_BASE,
 			PHYS_SDRAM_1_SIZE);
-#endif
 #if CONFIG_NR_DRAM_BANKS > 1
 	gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
 	gd->bd->bi_dram[1].size = get_ram_size((volatile void *)PHYS_SDRAM_2,
 			PHYS_SDRAM_2_SIZE);
 #endif
-
-	return 0;
 }
 
 int checkboard(void)
diff --git a/doc/README.arm-relocation b/doc/README.arm-relocation
index 6be1a12..e3ed60e 100644
--- a/doc/README.arm-relocation
+++ b/doc/README.arm-relocation
@@ -43,6 +43,29 @@ CONFIG_SYS_ARM_WITHOUT_RELOC defined!!!
 
 -------------------------------------------------------------------------------------
 
+For boards which boot from nand_spl, it is possible to save a copy
+if TEXT_BASE == relocation address! This prevents that uboot code
+is copied again in relocate_code().
+
+example for the tx25 board:
+
+a) cpu starts
+b) it copies the first page in nand to internal ram
+   (nand_spl_code)
+c) end executes this code
+d) this initialize CPU, RAM, ... and copy itself to RAM
+   (this bin must fit in one page, so board_init_f()
+    don;t fit in it ... )
+e) there it copy u-boot to CONFIG_SYS_NAND_U_BOOT_DST and
+   starts this image @ CONFIG_SYS_NAND_U_BOOT_START
+f) u-boot code steps through board_init_f() and calculates
+   the relocation address and copy itself to it
+
+If TEXT_BASE == relocation address, the copying of u-boot
+in f) could be saved.
+
+-------------------------------------------------------------------------------------
+
 ToDo:
 
 - fill in bd_t infos (check)
diff --git a/include/configs/da850evm.h b/include/configs/da850evm.h
index 357715d..016a21e 100644
--- a/include/configs/da850evm.h
+++ b/include/configs/da850evm.h
@@ -39,7 +39,6 @@
 #define CONFIG_SYS_HZ_CLOCK		clk_get(DAVINCI_AUXCLK_CLKID)
 #define CONFIG_SYS_HZ			1000
 #define CONFIG_SKIP_LOWLEVEL_INIT
-#define CONFIG_SKIP_RELOCATE_UBOOT	/* to a proper address, init done */
 
 /*
  * Memory Info
@@ -137,4 +136,9 @@
 #undef CONFIG_CMD_ENV
 #endif
 
+/* additions for new relocation code, must added to all boards */
+#undef CONFIG_SYS_ARM_WITHOUT_RELOC /* This board is tested with relocation support */
+#define CONFIG_SYS_SDRAM_BASE		0xc0000000
+#define CONFIG_SYS_INIT_SP_ADDR		(CONFIG_SYS_SDRAM_BASE + 0x1000 - /* Fix this */ \
+					CONFIG_SYS_GBL_DATA_SIZE)
 #endif /* __CONFIG_H */
diff --git a/include/configs/imx27lite-common.h b/include/configs/imx27lite-common.h
index 33550ba..812e5f2 100644
--- a/include/configs/imx27lite-common.h
+++ b/include/configs/imx27lite-common.h
@@ -235,4 +235,9 @@
 	"mtdids=" MTDIDS_DEFAULT "\0"					\
 	"mtdparts=" MTDPARTS_DEFAULT "\0"				\
 
+/* additions for new relocation code, must added to all boards */
+#undef CONFIG_SYS_ARM_WITHOUT_RELOC /* This board is tested with relocation support */
+#define CONFIG_SYS_SDRAM_BASE		PHYS_SDRAM_1
+#define CONFIG_SYS_INIT_SP_ADDR		(CONFIG_SYS_SDRAM_BASE + 0x1000 - /* Fix this */ \
+					CONFIG_SYS_GBL_DATA_SIZE)
 #endif /* __IMX27LITE_COMMON_CONFIG_H */
diff --git a/include/configs/km_arm.h b/include/configs/km_arm.h
index 1617e69..8673e6f 100644
--- a/include/configs/km_arm.h
+++ b/include/configs/km_arm.h
@@ -180,4 +180,8 @@ int get_scl (void);
 #undef	CONFIG_JFFS2_CMDLINE
 #endif
 
+/* additions for new relocation code, must added to all boards */
+#define CONFIG_SYS_SDRAM_BASE		0x00000000
+#define CONFIG_SYS_INIT_SP_ADDR		(0x00000000 + 0x1000 - /* Fix this */ \
+					CONFIG_SYS_GBL_DATA_SIZE)
 #endif /* _CONFIG_KM_ARM_H */
diff --git a/include/configs/tx25.h b/include/configs/tx25.h
index 013aa35..c798570 100644
--- a/include/configs/tx25.h
+++ b/include/configs/tx25.h
@@ -40,9 +40,9 @@
 /* Start copying real U-boot from the second page */
 #define CONFIG_SYS_NAND_U_BOOT_OFFS	0x800
 #define CONFIG_SYS_NAND_U_BOOT_SIZE	0x30000
-/* Load U-Boot to this address */
-#define CONFIG_SYS_NAND_U_BOOT_DST	0x81f00000
-#define CONFIG_SYS_NAND_U_BOOT_START	CONFIG_SYS_NAND_U_BOOT_DST
+
+#define CONFIG_SYS_NAND_U_BOOT_DST      (0x81fc0000)
+#define CONFIG_SYS_NAND_U_BOOT_START    CONFIG_SYS_NAND_U_BOOT_DST
 
 #define CONFIG_SYS_NAND_PAGE_SIZE	2048
 #define CONFIG_SYS_NAND_SPARE_SIZE	64
@@ -52,7 +52,6 @@
 #define CONFIG_SYS_NAND_BAD_BLOCK_POS	0
 #else
 #define CONFIG_SKIP_LOWLEVEL_INIT
-#define CONFIG_SKIP_RELOCATE_UBOOT
 #endif
 
 #define CONFIG_DISPLAY_CPUINFO
@@ -177,4 +176,10 @@
 	"update=nand erase 0 40000;nand write ${loadaddr} 0 40000\0"	\
 	"upd=run load update\0"						\
 
+/* additions for new relocation code, must added to all boards */
+#undef CONFIG_SYS_ARM_WITHOUT_RELOC /* This board is tested with relocation support */
+#define CONFIG_SYS_SDRAM_BASE		PHYS_SDRAM_1
+#define CONFIG_SYS_INIT_SP_ADDR		(CONFIG_SYS_SDRAM_BASE + 0x1000 - /* Fix this */ \
+					CONFIG_SYS_GBL_DATA_SIZE)
+
 #endif /* __CONFIG_H */
diff --git a/nand_spl/board/karo/tx25/u-boot.lds b/nand_spl/board/karo/tx25/u-boot.lds
index 423bed3..c572557 100644
--- a/nand_spl/board/karo/tx25/u-boot.lds
+++ b/nand_spl/board/karo/tx25/u-boot.lds
@@ -41,11 +41,23 @@ SECTIONS
 	.rodata : { *(.rodata) }
 
 	. = ALIGN(4);
-	.data : { *(.data) }
+	.data : {
+		*(.data)
+	__datarel_start = .;
+		*(.data.rel)
+	__datarelrolocal_start = .;
+		*(.data.rel.ro.local)
+	__datarellocal_start = .;
+		*(.data.rel.local)
+	__datarelro_start = .;
+		*(.data.rel.ro)
+	}
 
+	__got_start = .;
 	. = ALIGN(4);
 	.got : { *(.got) }
 
+	__got_end = .;
 	. = .;
 	__u_boot_cmd_start = .;
 	.u_boot_cmd : { *(.u_boot_cmd) }