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.
On the tx25 board TEXT_BASE is set to the final relocation
address to prevent one more copying of u-boot code
when relocating. More info see:
doc/README.arm-relocation
da850 board:
Tested-by: Ben Gardiner <bengardiner@nanometrics.ca>
Portions of this work were supported by funding from
the CE Linux Forum.
Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Ben Gardiner <bengardiner@nanometrics.ca>
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 @@
#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 */