TI: Add, use a DEFAULT_LINUX_BOOT_ENV environment string

To deal with a reoccurring problem properly we need to specify addresses
for the Linux kernel, Flatted Device Tree and ramdisk that obey the
constraints within the kernel's Documentation/arm/Booting file but also
make sure that we relocate things within a valid address range.

It is possible with these addresses to also set fdt_high and initrd_high
to the value of 0xffffffff.  We don't do this by default to allow for
the most likely success of people using custom addresses however.

Signed-off-by: Tom Rini <trini@ti.com>

diff --git a/include/configs/am335x_evm.h b/include/configs/am335x_evm.h
index ea9e758a6966faaa5476e7ee5e2ec1b47d68fbe5..41485179e4fe98c07f307d671fb3f2f1f1337908 100644 (file)
--- a/include/configs/am335x_evm.h
+++ b/include/configs/am335x_evm.h
@@ -61,11 +61,8 @@
 
 #ifndef CONFIG_SPL_BUILD
 #define CONFIG_EXTRA_ENV_SETTINGS \
-       "loadaddr=0x80200000\0" \
-       "fdtaddr=0x80F80000\0" \
-       "fdt_high=0xffffffff\0" \
+       DEFAULT_LINUX_BOOT_ENV \
        "boot_fdt=try\0" \
-       "rdaddr=0x81000000\0" \
        "bootpart=0:2\0" \
        "bootdir=/boot\0" \
        "bootfile=zImage\0" \

diff --git a/include/configs/am43xx_evm.h b/include/configs/am43xx_evm.h
index 614857dd25cde0119599bd0f9a76c1d0c9f0e606..27777c51baa7e339a8c4ca5fec789b562230ae2e 100644 (file)
--- a/include/configs/am43xx_evm.h
+++ b/include/configs/am43xx_evm.h
@@ -112,10 +112,7 @@
 
 #ifndef CONFIG_SPL_BUILD
 #define CONFIG_EXTRA_ENV_SETTINGS \
-       "loadaddr=0x80200000\0" \
-       "fdtaddr=0x80F80000\0" \
-       "fdt_high=0xffffffff\0" \
-       "rdaddr=0x81000000\0" \
+       DEFAULT_LINUX_BOOT_ENV \
        "fdtfile=undefined\0" \
        "bootpart=0:2\0" \
        "bootdir=/boot\0" \

diff --git a/include/configs/ti_armv7_common.h b/include/configs/ti_armv7_common.h
index 1127b5b6fb172c3f5e34a484aab2139dcc564803..ec8eec60a9679e27bf22d632151de357d6aed2c7 100644 (file)
--- a/include/configs/ti_armv7_common.h
+++ b/include/configs/ti_armv7_common.h
@@ -36,8 +36,28 @@
 /*
  * Our DDR memory always starts at 0x80000000 and U-Boot shall have
  * relocated itself to higher in memory by the time this value is used.
+ * However, set this to a 32MB offset to allow for easier Linux kernel
+ * booting as the default is often used as the kernel load address.
  */
-#define CONFIG_SYS_LOAD_ADDR           0x80000000
+#define CONFIG_SYS_LOAD_ADDR           0x82000000
+
+/*
+ * We setup defaults based on constraints from the Linux kernel, which should
+ * also be safe elsewhere.  We have the default load at 32MB into DDR (for
+ * the kernel), FDT above 128MB (the maximum location for the end of the
+ * kernel), and the ramdisk 512KB above that (allowing for hopefully never
+ * seen large trees).  We say all of this must be within the first 256MB
+ * as that will normally be within the kernel lowmem and thus visible via
+ * bootm_size and we only run on platforms with 256MB or more of memory.
+ */
+#define DEFAULT_LINUX_BOOT_ENV \
+       "loadaddr=0x82000000\0" \
+       "kernel_addr_r=0x82000000\0" \
+       "fdtaddr=0x88000000\0" \
+       "fdt_addr_r=0x88000000\0" \
+       "rdaddr=0x88080000\0" \
+       "ramdisk_addr_r=0x88080000\0" \
+       "bootm_size=0x10000000\0"
 
 /*
  * Default to a quick boot delay.

diff --git a/include/configs/ti_omap4_common.h b/include/configs/ti_omap4_common.h
index bcb5eabd75660c4388b094258fbe2d6964b93db3..387f570da02c29b6f9722564fd9d0578d1c31dfc 100644 (file)
--- a/include/configs/ti_omap4_common.h
+++ b/include/configs/ti_omap4_common.h
@@ -87,10 +87,8 @@
  * Environment setup
  */
 #define CONFIG_EXTRA_ENV_SETTINGS \
-       "loadaddr=0x82000000\0" \
+       DEFAULT_LINUX_BOOT_ENV \
        "console=ttyO2,115200n8\0" \
-       "fdt_high=0xffffffff\0" \
-       "fdtaddr=0x80f80000\0" \
        "fdtfile=undefined\0" \
        "bootpart=0:2\0" \
        "bootdir=/boot\0" \

diff --git a/include/configs/ti_omap5_common.h b/include/configs/ti_omap5_common.h
index 7b10fbd28acf8b2c127cb8997f6af0d304bce2a2..2443d559346fa20c316b4c814a5ec4b44e10aec3 100644 (file)
--- a/include/configs/ti_omap5_common.h
+++ b/include/configs/ti_omap5_common.h
@@ -70,10 +70,7 @@
 #endif
 
 #define CONFIG_EXTRA_ENV_SETTINGS \
-       "loadaddr=0x80200000\0" \
-       "fdtaddr=0x80F80000\0" \
-       "fdt_high=0xffffffff\0" \
-       "rdaddr=0x81000000\0" \
+       DEFAULT_LINUX_BOOT_ENV \
        "console=" CONSOLEDEV ",115200n8\0" \
        "fdtfile=undefined\0" \
        "bootpart=0:2\0" \