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ARM: implement relocation for ARM926

PATCH New Heiko Schocher 1 participant 1 message Aug 11, 2010

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Arm (32-bit) Arm i.MX and Layerscape
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Heiko Schocher

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PATCH 15/26 ARM: implement relocation for ARM926

Change the implementation for arm926 to relocate the code to an arbitrary address in RAM.

Adapt the TX25 (i.MX25), magnesium board to test the changes.

da850 board:

Tested-by Ben Gardiner <[email protected]>
Signed-off-by Heiko Schocher <[email protected]>

---
- changes since v1:
- removed converted but not tested boards
- add CONFIG_SYS_ARM_WITHOUT_RELOC

 arch/arm/cpu/arm926ejs/orion5x/dram.c |   24 +++++-
 arch/arm/cpu/arm926ejs/start.S        |  172 ++++++++++++++++++++++++++++++++-
 arch/arm/cpu/arm926ejs/u-boot.lds     |   14 +++-
 board/karo/tx25/config.mk             |    4 +-
 board/karo/tx25/tx25.c                |   11 ++-
 board/keymile/km_arm/km_arm.c         |   24 +++++
 board/logicpd/imx27lite/config.mk     |    2 +-
 board/logicpd/imx27lite/imx27lite.c   |   15 ++-
 include/configs/da850evm.h            |    6 +-
 include/configs/imx27lite-common.h    |    5 +
 include/configs/km_arm.h              |    4 +
 include/configs/tx25.h                |   13 ++-
 nand_spl/board/karo/tx25/u-boot.lds   |   14 +++-
 13 files changed, 287 insertions(+), 21 deletions(-)
arch/arm/cpu/arm926ejs/orion5x/dram.c +23 -1
index c719798..c5c8ab7 100644
@@ -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
arch/arm/cpu/arm926ejs/start.S +170 -2

220 lines not on this page · raw message

arch/arm/cpu/arm926ejs/u-boot.lds +13 -1
index ecbc58c..02eb8ca 100644
@@ -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) }
board/karo/tx25/config.mk +2 -2
index 732a14a..1a32c87 100644
@@ -1,5 +1,5 @@
 ifdef CONFIG_NAND_SPL
-TEXT_BASE = 0x81ec0000
+TEXT_BASE = 0x810c0000
 else
-TEXT_BASE = 0x81f00000
+TEXT_BASE = 0x81fc1000
 endif
board/karo/tx25/tx25.c +9 -2
index 2608698..dc57d5c 100644
@@ -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)
board/keymile/km_arm/km_arm.c +24 -0
index d7cbd7a..7c0b858 100644
@@ -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)
 {
board/logicpd/imx27lite/config.mk +1 -1
index a2e7768..2f9c4e6 100644
@@ -1 +1 @@
-TEXT_BASE = 0xA7F00000
+TEXT_BASE = 0xc0000000
board/logicpd/imx27lite/imx27lite.c +9 -6
index 4427415..6eb5cc2 100644
@@ -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)
include/configs/da850evm.h +5 -1
index 357715d..016a21e 100644
@@ -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 */
include/configs/imx27lite-common.h +5 -0
index 1da8602..792bad7 100644
@@ -234,4 +234,9 @@
 	"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 */
include/configs/km_arm.h +4 -0
index 6519c90..198fc59 100644
@@ -188,4 +188,8 @@ 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 */
include/configs/tx25.h +9 -4
index c8188ca..99f5a26 100644
@@ -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      (0x81fc1000)
+#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

@@ -176,4 +175,10 @@
 	"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 */
nand_spl/board/karo/tx25/u-boot.lds +13 -1
index 423bed3..c572557 100644
@@ -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) }
Signature · 5 lines
1.6.2.5

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