Currently CONFIG_ONENAND_IPL is used in a number of #ifdef's in start.S. In preparation for adding support for NAND SPL the macro CONFIG_PRELOADER is introducted and replaces the CONFIG_ONENAND_IPL in start.S.
Signed-off-by: Magnus Lilja lilja.magnus@gmail.com --- README | 5 +++++ cpu/arm1136/start.S | 24 ++++++++++++------------ onenand_ipl/board/apollon/Makefile | 4 ++-- 3 files changed, 19 insertions(+), 14 deletions(-)
diff --git a/README b/README index 561c100..86cf628 100644 --- a/README +++ b/README @@ -2702,6 +2702,11 @@ Low Level (hardware related) configuration options: some other boot loader or by a debugger which performs these initializations itself.
+- CONFIG_PRELOADER + + [ARM only] Modifies the behaviour of start.S when + compiling a loader that is executed before the actual + U-Boot. E.g. when compiling a NAND SPL.
Building the Software: ====================== diff --git a/cpu/arm1136/start.S b/cpu/arm1136/start.S index 999b184..28cb5fd 100644 --- a/cpu/arm1136/start.S +++ b/cpu/arm1136/start.S @@ -32,7 +32,7 @@ #include <version.h> .globl _start _start: b reset -#ifdef CONFIG_ONENAND_IPL +#ifdef CONFIG_PRELOADER ldr pc, _hang ldr pc, _hang ldr pc, _hang @@ -67,7 +67,7 @@ _not_used: .word not_used _irq: .word irq _fiq: .word fiq _pad: .word 0x12345678 /* now 16*4=64 */ -#endif /* CONFIG_ONENAND_IPL */ +#endif /* CONFIG_PRELOADER */ .global _end_vect _end_vect:
@@ -156,9 +156,9 @@ relocate: /* relocate U-Boot to RAM */ adr r0, _start /* r0 <- current position of code */ ldr r1, _TEXT_BASE /* test if we run from flash or RAM */ cmp r0, r1 /* don't reloc during debug */ -#ifndef CONFIG_ONENAND_IPL +#ifndef CONFIG_PRELOADER beq stack_setup -#endif /* CONFIG_ONENAND_IPL */ +#endif /* CONFIG_PRELOADER */
ldr r2, _armboot_start ldr r3, _bss_start @@ -175,7 +175,7 @@ copy_loop: /* Set up the stack */ stack_setup: ldr r0, _TEXT_BASE /* upper 128 KiB: relocated uboot */ -#ifdef CONFIG_ONENAND_IPL +#ifdef CONFIG_PRELOADER sub sp, r0, #128 /* leave 32 words for abort-stack */ #else sub r0, r0, #CONFIG_SYS_MALLOC_LEN /* malloc area */ @@ -184,14 +184,14 @@ stack_setup: sub r0, r0, #(CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ) #endif sub sp, r0, #12 /* leave 3 words for abort-stack */ -#endif /* CONFIG_ONENAND_IPL */ +#endif /* CONFIG_PRELOADER */
clear_bss: ldr r0, _bss_start /* find start of bss segment */ ldr r1, _bss_end /* stop here */ mov r2, #0x00000000 /* clear */
-#ifndef CONFIG_ONENAND_IPL +#ifndef CONFIG_PRELOADER clbss_l:str r2, [r0] /* clear loop... */ add r0, r0, #4 cmp r0, r1 @@ -244,7 +244,7 @@ cpu_init_crit: mov lr, ip /* restore link */ mov pc, lr /* back to my caller */
-#ifndef CONFIG_ONENAND_IPL +#ifndef CONFIG_PRELOADER /* ************************************************************************* * @@ -357,17 +357,17 @@ cpu_init_crit: .macro get_fiq_stack @ setup FIQ stack ldr sp, FIQ_STACK_START .endm -#endif /* CONFIG_ONENAND_IPL */ +#endif /* CONFIG_PRELOADER */
/* * exception handlers */ -#ifdef CONFIG_ONENAND_IPL +#ifdef CONFIG_PRELOADER .align 5 do_hang: ldr sp, _TEXT_BASE /* use 32 words about stack */ bl hang /* hang and never return */ -#else /* !CONFIG_ONENAND IPL */ +#else /* !CONFIG_PRELOADER */ .align 5 undefined_instruction: get_bad_stack @@ -435,4 +435,4 @@ fiq: arm1136_cache_flush: mcr p15, 0, r1, c7, c5, 0 @ invalidate I cache mov pc, lr @ back to caller -#endif /* CONFIG_ONENAND_IPL */ +#endif /* CONFIG_PRELOADER */ diff --git a/onenand_ipl/board/apollon/Makefile b/onenand_ipl/board/apollon/Makefile index 1f996a4..23eee43 100644 --- a/onenand_ipl/board/apollon/Makefile +++ b/onenand_ipl/board/apollon/Makefile @@ -4,8 +4,8 @@ include $(TOPDIR)/onenand_ipl/board/$(BOARDDIR)/config.mk
LDSCRIPT= $(TOPDIR)/onenand_ipl/board/$(BOARDDIR)/u-boot.onenand.lds LDFLAGS = -Bstatic -T $(LDSCRIPT) -Ttext $(TEXT_BASE) $(PLATFORM_LDFLAGS) -AFLAGS += -DCONFIG_ONENAND_IPL -CFLAGS += -DCONFIG_ONENAND_IPL +AFLAGS += -DCONFIG_PRELOADER -DCONFIG_ONENAND_IPL +CFLAGS += -DCONFIG_PRELOADER -DCONFIG_ONENAND_IPL OBJCLFAGS += --gap-fill=0x00
SOBJS := low_levelinit.o