Using changes in this patch we were able to reduce approx 4k size of u-boot-spl.bin image. Following is breif description of changes to reduce SPL size: 1. Compile-off mp.c and libfdt.c in case of SPL build. 2. Keep MMU and DCACHE specific variable and functions under CONFIG_SYS_DCACHE_OFF macro. 3. Compile-off IFC specific funtion call "init_early_memctl_regs" in case of SPL build.
Signed-off-by: Sumit Garg sumit.garg@nxp.com ---
Dependent on ls1088 base SD boot target. Also dependent on ls1088 QPSI secure boot target.
arch/arm/cpu/armv8/fsl-layerscape/Makefile | 2 ++ arch/arm/cpu/armv8/fsl-layerscape/cpu.c | 6 ++++++ arch/arm/cpu/armv8/fsl-layerscape/soc.c | 2 ++ 3 files changed, 10 insertions(+)
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/Makefile b/arch/arm/cpu/armv8/fsl-layerscape/Makefile index 115c3fc..0cb6d4e 100644 --- a/arch/arm/cpu/armv8/fsl-layerscape/Makefile +++ b/arch/arm/cpu/armv8/fsl-layerscape/Makefile @@ -7,8 +7,10 @@ obj-y += cpu.o obj-y += lowlevel.o obj-y += soc.o +ifndef CONFIG_SPL_BUILD obj-$(CONFIG_MP) += mp.o obj-$(CONFIG_OF_LIBFDT) += fdt.o +endif obj-$(CONFIG_SPL) += spl.o obj-$(CONFIG_$(SPL_)FSL_LS_PPA) += ppa.o
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/cpu.c b/arch/arm/cpu/armv8/fsl-layerscape/cpu.c index 3c9a5ed..3ce51af 100644 --- a/arch/arm/cpu/armv8/fsl-layerscape/cpu.c +++ b/arch/arm/cpu/armv8/fsl-layerscape/cpu.c @@ -32,7 +32,9 @@
DECLARE_GLOBAL_DATA_PTR;
+#ifndef CONFIG_SYS_DCACHE_OFF struct mm_region *mem_map = early_map; +#endif
void cpu_name(char *name) { @@ -824,6 +826,7 @@ void efi_add_known_memory(void) } #endif
+#ifndef CONFIG_SYS_DCACHE_OFF /* * Before DDR size is known, early MMU table have DDR mapped as device memory * to avoid speculative access. To relocate U-Boot to DDR, "normal memory" @@ -888,14 +891,17 @@ void update_early_mmu_table(void) } } } +#endif
__weak int dram_init(void) { fsl_initdram(); +#ifndef CONFIG_SYS_DCACHE_OFF #if !defined(CONFIG_SPL) || defined(CONFIG_SPL_BUILD) /* This will break-before-make MMU for DDR */ update_early_mmu_table(); #endif +#endif
return 0; } diff --git a/arch/arm/cpu/armv8/fsl-layerscape/soc.c b/arch/arm/cpu/armv8/fsl-layerscape/soc.c index 2075c96..7c26953 100644 --- a/arch/arm/cpu/armv8/fsl-layerscape/soc.c +++ b/arch/arm/cpu/armv8/fsl-layerscape/soc.c @@ -329,7 +329,9 @@ void bypass_smmu(void) void fsl_lsch3_early_init_f(void) { erratum_rcw_src(); +#ifndef CONFIG_SPL_BUILD init_early_memctl_regs(); /* tighten IFC timing */ +#endif #ifdef CONFIG_SYS_FSL_ERRATUM_A009203 erratum_a009203(); #endif