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TI: Add, use a DEFAULT_LINUX_BOOT_ENV environment string

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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>
This commit is contained in:
Tom Rini 2014-03-28 15:03:29 -04:00
parent ae1590ed52
commit fb3ad9bd92
5 changed files with 25 additions and 16 deletions
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5
include/configs/am335x_evm.h
View File

@ -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" \

5
include/configs/am43xx_evm.h
View File

@ -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" \

22
include/configs/ti_armv7_common.h
View File

@ -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.

4
include/configs/ti_omap4_common.h
View File

@ -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" \

5
include/configs/ti_omap5_common.h
View File

@ -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" \