spl/powerpc: introduce CONFIG_SPL_INIT_MINIMAL

cpu_init_nand.c is renamed to spl_minimal.c as it is not really NAND-specific.

Signed-off-by: Scott Wood <scottwood@freescale.com>
---
v2: factor out START, and change cpu_init_nand.c to spl_minimal.c
Cc: Andy Fleming <afleming@freescale.com>
This commit is contained in:
Scott Wood 2012-09-20 16:35:21 -05:00
parent a179eb0a4b
commit 4b919725b6
5 changed files with 73 additions and 15 deletions

3
README
View file

@ -2677,6 +2677,9 @@ FIT uImage format:
For ARM, enable an optional function to print more information
about the running system.
CONFIG_SPL_INIT_MINIMAL
Arch init code should be built for a very small image
CONFIG_SPL_LIBCOMMON_SUPPORT
Support for common/libcommon.o in SPL binary

View file

@ -28,7 +28,22 @@ include $(TOPDIR)/config.mk
LIB = $(obj)lib$(CPU).o
START = start.o resetvec.o
MINIMAL=
ifdef CONFIG_SPL_BUILD
ifdef CONFIG_SPL_INIT_MINIMAL
MINIMAL=y
endif
endif
START = start.o resetvec.o
ifdef MINIMAL
COBJS-y += cpu_init_early.o tlb.o spl_minimal.o
else
SOBJS-$(CONFIG_MP) += release.o
SOBJS = $(SOBJS-y)
@ -132,6 +147,8 @@ COBJS-y += traps.o
# Stub implementations of cache management functions for USB
COBJS-y += cache.o
endif # not minimal
COBJS = $(COBJS-y)
SRCS := $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c)

View file

@ -44,6 +44,15 @@
#undef MSR_KERNEL
#define MSR_KERNEL ( MSR_ME ) /* Machine Check */
#if defined(CONFIG_NAND_SPL) || \
(defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_INIT_MINIMAL))
#define MINIMAL_SPL
#endif
#if !defined(CONFIG_SPL) && !defined(CONFIG_SYS_RAMBOOT) && !defined(CONFIG_SECURE_BOOT)
#define NOR_BOOT
#endif
/*
* Set up GOT: Global Offset Table
*
@ -53,7 +62,7 @@
GOT_ENTRY(_GOT2_TABLE_)
GOT_ENTRY(_FIXUP_TABLE_)
#ifndef CONFIG_NAND_SPL
#ifndef MINIMAL_SPL
GOT_ENTRY(_start)
GOT_ENTRY(_start_of_vectors)
GOT_ENTRY(_end_of_vectors)
@ -282,11 +291,8 @@ l2_disabled:
isync
.endm
/*
* Ne need to setup interrupt vector for NAND SPL
* because NAND SPL never compiles it.
*/
#if !defined(CONFIG_NAND_SPL)
/* Interrupt vectors do not fit in minimal SPL. */
#if !defined(MINIMAL_SPL)
/* Setup interrupt vectors */
lis r1,CONFIG_SYS_MONITOR_BASE@h
mtspr IVPR,r1
@ -518,7 +524,7 @@ nexti: mflr r1 /* R1 = our PC */
* in AS1.
*/
#if !defined(CONFIG_SYS_RAMBOOT) && !defined(CONFIG_SECURE_BOOT)
#ifdef NOR_BOOT
/*
* TLB entry is created for IVPR + IVOR15 to map on valid OP code address
* bacause flash's virtual address maps to 0xff800000 - 0xffffffff.
@ -1032,7 +1038,7 @@ create_init_ram_area:
lis r6,FSL_BOOKE_MAS0(1, 15, 0)@h
ori r6,r6,FSL_BOOKE_MAS0(1, 15, 0)@l
#if !defined(CONFIG_SYS_RAMBOOT) && !defined(CONFIG_SECURE_BOOT)
#ifdef NOR_BOOT
/* create a temp mapping in AS=1 to the 4M boot window */
create_tlb1_entry 15, \
1, BOOKE_PAGESZ_4M, \
@ -1107,7 +1113,8 @@ switch_as:
bdnz 1b
/* Jump out the last 4K page and continue to 'normal' start */
#ifdef CONFIG_SYS_RAMBOOT
#if defined(CONFIG_SYS_RAMBOOT) || defined(CONFIG_SPL)
/* We assume that we're already running at the address we're linked at */
b _start_cont
#else
/* Calculate absolute address in FLASH and jump there */
@ -1153,7 +1160,7 @@ _start_cont:
/* NOTREACHED - board_init_f() does not return */
#ifndef CONFIG_NAND_SPL
#ifndef MINIMAL_SPL
. = EXC_OFF_SYS_RESET
.globl _start_of_vectors
_start_of_vectors:
@ -1597,7 +1604,7 @@ in32:
in32r:
lwbrx r3,r0,r3
blr
#endif /* !CONFIG_NAND_SPL */
#endif /* !MINIMAL_SPL */
/*------------------------------------------------------------------------------*/
@ -1794,7 +1801,7 @@ clear_bss:
mr r4,r10 /* Destination Address */
bl board_init_r
#ifndef CONFIG_NAND_SPL
#ifndef MINIMAL_SPL
/*
* Copy exception vector code to low memory
*
@ -1967,4 +1974,4 @@ setup_ivors:
#include "fixed_ivor.S"
blr
#endif /* !CONFIG_NAND_SPL */
#endif /* !MINIMAL_SPL */

View file

@ -10,6 +10,20 @@ include $(TOPDIR)/config.mk
LIB = $(obj)lib8xxx.o
MINIMAL=
ifdef CONFIG_SPL_BUILD
ifdef CONFIG_SPL_INIT_MINIMAL
MINIMAL=y
endif
endif
ifdef MINIMAL
COBJS-$(CONFIG_FSL_LAW) += law.o
else
ifneq ($(CPU),mpc83xx)
COBJS-y += cpu.o
endif
@ -20,6 +34,8 @@ COBJS-$(CONFIG_FSL_LBC) += fsl_lbc.o
COBJS-$(CONFIG_SYS_SRIO) += srio.o
COBJS-$(CONFIG_FSL_LAW) += law.o
endif
SRCS := $(START:.o=.S) $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c)
OBJS := $(addprefix $(obj),$(SOBJS-y) $(COBJS-y))

View file

@ -38,8 +38,21 @@ endif
LIB = $(obj)lib$(ARCH).o
SOBJS-y += ppccache.o
MINIMAL=
ifdef CONFIG_SPL_BUILD
ifdef CONFIG_SPL_INIT_MINIMAL
MINIMAL=y
endif
endif
ifdef MINIMAL
COBJS-y += cache.o
else
SOBJS-y += ppcstring.o
SOBJS-y += ppccache.o
SOBJS-y += ticks.o
SOBJS-y += reloc.o
@ -64,6 +77,8 @@ $(obj)ppcstring.o: AFLAGS += -Dmemcpy=__memcpy
COBJS-y += memcpy_mpc5200.o
endif
endif # not minimal
COBJS += $(sort $(COBJS-y))
SRCS := $(GLSOBJS:.o=.S) $(GLCOBJS:.o=.c) \