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 --- Changes in v4: - rewrote README entries
Changes in v3: - introduced CONFIG_SPL_MAX_FOOTPRINT - fixed typo in BSS size test
Changes in v2: - removed mmutable in SPL linker file
README | 18 ++++++++++++++++-- arch/arm/cpu/u-boot-spl.lds | 24 +++++++++++++----------- arch/arm/cpu/u-boot.lds | 4 ---- include/configs/tegra-common.h | 2 +- 4 files changed, 30 insertions(+), 18 deletions(-)
diff --git a/README b/README index 6272853..f544c88 100644 --- a/README +++ b/README @@ -2775,8 +2775,18 @@ 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_MAX_FOOTPRINT and CONFIG_MAX_BSS_SIZE should 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. @@ -2789,7 +2799,11 @@ 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_MAX_FOOTPRINT and CONFIG_MAX_BSS_SIZE should not + be both defined at the same time.
CONFIG_SPL_STACK Adress of the start of the stack SPL will use diff --git a/arch/arm/cpu/u-boot-spl.lds b/arch/arm/cpu/u-boot-spl.lds index 3c0d99c..1408f03 100644 --- a/arch/arm/cpu/u-boot-spl.lds +++ b/arch/arm/cpu/u-boot-spl.lds @@ -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 diff --git a/arch/arm/cpu/u-boot.lds b/arch/arm/cpu/u-boot.lds index 3a1083d..7bbc4f5 100644 --- a/arch/arm/cpu/u-boot.lds +++ b/arch/arm/cpu/u-boot.lds @@ -101,7 +101,3 @@ 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 diff --git a/include/configs/tegra-common.h b/include/configs/tegra-common.h index 036ded0..e9241b8 100644 --- a/include/configs/tegra-common.h +++ b/include/configs/tegra-common.h @@ -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