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ARM: fix CONFIG_SPL_MAX_SIZE semantics

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Remove SPL-related ASSERT() in arch/arm/cpu/u-boot.lds
as this file is never used for SPL builds.

Rewrite the ASSERT() in arch/arm/cpu/u-boot-spl.lds
to separately test image (text,data,rodata...) size,
BSS size, and full footprint each against its own max,
and make Tegra boards check full footprint.

Also, output section mmutable is not used in SPL builds.
Remove it.

Finally, update README regarding the (now homogeneous)
semantics of CONFIG_SPL_[BSS_]MAX_SIZE and add the new
CONFIG_SPL_MAX_FOOTPRINT macro.

Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
Reported-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
This commit is contained in:
Albert ARIBAUD 2013-04-12 05:14:30 +00:00
parent 345be0b267
commit 6ebc346111
4 changed files with 30 additions and 18 deletions
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18
README
View file

@ -2831,8 +2831,18 @@ FIT uImage format:
CONFIG_SPL_LDSCRIPT
LDSCRIPT for linking the SPL binary.
CONFIG_SPL_MAX_FOOTPRINT
Maximum size in memory allocated to the SPL, BSS included.
When defined, the linker checks that the actual memory
used by SPL from _start to __bss_end does not exceed it.
CONFIG_SPL_MAX_FOOTPRINT and CONFIG_SPL_MAX_BSS_SIZE
must not be both defined at the same time.
CONFIG_SPL_MAX_SIZE
Maximum binary size (text, data and rodata) of the SPL binary.
Maximum size of the SPL image (text, data, rodata, and
linker lists sections), BSS excluded.
When defined, the linker checks that the actual size does
not exceed it.
CONFIG_SPL_TEXT_BASE
TEXT_BASE for linking the SPL binary.
@ -2845,7 +2855,11 @@ FIT uImage format:
Link address for the BSS within the SPL binary.
CONFIG_SPL_BSS_MAX_SIZE
Maximum binary size of the BSS section of the SPL binary.
Maximum size in memory allocated to the SPL BSS.
When defined, the linker checks that the actual memory used
by SPL from __bss_start to __bss_end does not exceed it.
CONFIG_SPL_MAX_FOOTPRINT and CONFIG_SPL_MAX_BSS_SIZE
must not be both defined at the same time.
CONFIG_SPL_STACK
Adress of the start of the stack SPL will use

24
arch/arm/cpu/u-boot-spl.lds
View file

@ -65,15 +65,6 @@ SECTIONS
_end = .;
/*
* Deprecated: this MMU section is used by pxa at present but
* should not be used by new boards/CPUs.
*/
. = ALIGN(4096);
.mmutable : {
*(.mmutable)
}
.bss __rel_dyn_start (OVERLAY) : {
__bss_start = .;
*(.bss*)
@ -88,6 +79,17 @@ SECTIONS
/DISCARD/ : { *(.gnu*) }
}
#if defined(CONFIG_SPL_TEXT_BASE) && defined(CONFIG_SPL_MAX_SIZE)
ASSERT(__bss_end < (CONFIG_SPL_TEXT_BASE + CONFIG_SPL_MAX_SIZE), "SPL image too big");
#if defined(CONFIG_SPL_MAX_SIZE)
ASSERT(__image_copy_end - __image_copy_start < (CONFIG_SPL_MAX_SIZE), \
"SPL image too big");
#endif
#if defined(CONFIG_SPL_BSS_MAX_SIZE)
ASSERT(__bss_end - __bss_start < (CONFIG_SPL_BSS_MAX_SIZE), \
"SPL image BSS too big");
#endif
#if defined(CONFIG_SPL_MAX_FOOTPRINT)
ASSERT(__bss_end - _start < (CONFIG_SPL_MAX_FOOTPRINT), \
"SPL image plus BSS too big");
#endif

4
arch/arm/cpu/u-boot.lds
View file

@ -107,7 +107,3 @@ SECTIONS
/DISCARD/ : { *(.interp*) }
/DISCARD/ : { *(.gnu*) }
}
#if defined(CONFIG_SPL_TEXT_BASE) && defined(CONFIG_SPL_MAX_SIZE)
ASSERT(__bss_end < (CONFIG_SPL_TEXT_BASE + CONFIG_SPL_MAX_SIZE), "SPL image too big");
#endif

2
include/configs/tegra-common.h
View file

@ -158,7 +158,7 @@
#define CONFIG_SPL_RAM_DEVICE
#define CONFIG_SPL_BOARD_INIT
#define CONFIG_SPL_NAND_SIMPLE
#define CONFIG_SPL_MAX_SIZE (CONFIG_SYS_TEXT_BASE - \
#define CONFIG_SPL_MAX_FOOTPRINT (CONFIG_SYS_TEXT_BASE - \
CONFIG_SPL_TEXT_BASE)
#define CONFIG_SYS_SPL_MALLOC_SIZE 0x00010000