arm: vf610twr: improve memory layout

Currently, the device tree relocation is disabled, likely to
keep some DDR3 RAM at the end for Cortex-M4 firmwares. This
can be archived using bootm_size, which limits the image
processing range of the boot commands.

Move the device tree standard load address to a higher address
which aligns better with what we are doing on other boards.

Signed-off-by: Stefan Agner <stefan@agner.ch>
Acked-by: Otavio Salvador <otavio@ossystems.com.br>

diff --git a/include/configs/vf610twr.h b/include/configs/vf610twr.h
index 324ba8f0ccdc9cf15f3647bac9c44ca3536b5bf9..7f4260a3ac727b715b0107c66a1099bc3f94dc24 100644 (file)
--- a/include/configs/vf610twr.h
+++ b/include/configs/vf610twr.h
@@ -116,20 +116,37 @@
 
 #define CONFIG_BOOTDELAY               3
 
-#define CONFIG_LOADADDR                        0x82000000
+#define CONFIG_SYS_LOAD_ADDR           0x82000000
 
 /* We boot from the gfxRAM area of the OCRAM. */
 #define CONFIG_SYS_TEXT_BASE           0x3f408000
 #define CONFIG_BOARD_SIZE_LIMIT                524288
 
+/*
+ * We do have 128MB of memory on the Vybrid Tower board. Leave the last
+ * 16MB alone to avoid conflicts with Cortex-M4 firmwares running from
+ * DDR3. Hence, limit the memory range for image processing to 112MB
+ * using bootm_size. All of the following must be within this range.
+ * We have the default load at 32MB into DDR (for the kernel), FDT at
+ * 64MB and the ramdisk 512KB above that (allowing for hopefully never
+ * seen large trees). This allows a reasonable split between ramdisk
+ * and kernel size, where the ram disk can be a bit larger.
+ */
+#define MEM_LAYOUT_ENV_SETTINGS \
+       "bootm_size=0x07000000\0" \
+       "loadaddr=0x82000000\0" \
+       "kernel_addr_r=0x82000000\0" \
+       "fdt_addr=0x84000000\0" \
+       "fdt_addr_r=0x84000000\0" \
+       "rdaddr=0x84080000\0" \
+       "ramdisk_addr_r=0x84080000\0"
+
 #define CONFIG_EXTRA_ENV_SETTINGS \
+       MEM_LAYOUT_ENV_SETTINGS \
        "script=boot.scr\0" \
        "image=zImage\0" \
        "console=ttyLP1\0" \
-       "fdt_high=0xffffffff\0" \
-       "initrd_high=0xffffffff\0" \
        "fdt_file=vf610-twr.dtb\0" \
-       "fdt_addr=0x81000000\0" \
        "boot_fdt=try\0" \
        "ip_dyn=yes\0" \
        "mmcdev=" __stringify(CONFIG_SYS_MMC_ENV_DEV) "\0" \
@@ -224,8 +241,6 @@
 #define CONFIG_SYS_MEMTEST_START       0x80010000
 #define CONFIG_SYS_MEMTEST_END         0x87C00000
 
-#define CONFIG_SYS_LOAD_ADDR           CONFIG_LOADADDR
-
 /*
  * Stack sizes
  * The stack sizes are set up in start.S using the settings below