Title: [8199] trunk/arch/blackfin: blackfin xip: push the 64 byte header into the build system and let the xip version use arbitrary entry points too now that the mkimage util doesnt require a specific -e with the -x option
- Revision
- 8199
- Author
- vapier
- Date
- 2010-01-19 19:01:26 -0500 (Tue, 19 Jan 2010)
Log Message
blackfin xip: push the 64 byte header into the build system and let the xip version use arbitrary entry points too now that the mkimage util doesnt require a specific -e with the -x option
Modified Paths
Diff
Modified: trunk/arch/blackfin/Kconfig (8198 => 8199)
--- trunk/arch/blackfin/Kconfig 2010-01-19 23:33:08 UTC (rev 8198)
+++ trunk/arch/blackfin/Kconfig 2010-01-20 00:01:26 UTC (rev 8199)
@@ -403,11 +403,19 @@
config ROM_BASE
hex "Kernel ROM Base"
depends on ROMKERNEL
- default "0x20040000"
+ default "0x20080040"
range 0x20000000 0x20400000 if !(BF54x || BF561)
range 0x20000000 0x30000000 if (BF54x || BF561)
help
+ Make sure your ROM base does not include any file-header
+ information that is prepended to the kernel.
+ For example, the bootable U-Boot format (created with
+ mkimage) has a 64 byte header (0x40). So while the image
+ you write to flash might start at say 0x20080000, you have
+ to add 0x40 to get the kernel's ROM base as it will come
+ after the header.
+
comment "Clock/PLL Setup"
config CLKIN_HZ
Modified: trunk/arch/blackfin/Makefile (8198 => 8199)
--- trunk/arch/blackfin/Makefile 2010-01-19 23:33:08 UTC (rev 8198)
+++ trunk/arch/blackfin/Makefile 2010-01-20 00:01:26 UTC (rev 8199)
@@ -141,7 +141,7 @@
INSTALL_PATH ?= /tftpboot
boot := arch/$(ARCH)/boot
-BOOT_TARGETS = vmImage vmImage.bin vmImage.bz2 vmImage.gz vmImage.lzma
+BOOT_TARGETS = vmImage vmImage.bin vmImage.bz2 vmImage.gz vmImage.lzma vmImage.xip
PHONY += $(BOOT_TARGETS) install
KBUILD_IMAGE := $(boot)/vmImage
@@ -159,6 +159,7 @@
echo ' vmImage.bz2 - Kernel-only image for U-Boot (arch/$(ARCH)/boot/vmImage.bz2)'
echo '* vmImage.gz - Kernel-only image for U-Boot (arch/$(ARCH)/boot/vmImage.gz)'
echo ' vmImage.lzma - Kernel-only image for U-Boot (arch/$(ARCH)/boot/vmImage.lzma)'
+ echo ' vmImage.xip - XIP Kernel-only image for U-Boot (arch/$(ARCH)/boot/vmImage.xip)'
echo ' install - Install kernel using'
echo ' (your) ~/bin/$(INSTALLKERNEL) or'
echo ' (distribution) PATH: $(INSTALLKERNEL) or'
Modified: trunk/arch/blackfin/boot/Makefile (8198 => 8199)
--- trunk/arch/blackfin/boot/Makefile 2010-01-19 23:33:08 UTC (rev 8198)
+++ trunk/arch/blackfin/boot/Makefile 2010-01-20 00:01:26 UTC (rev 8199)
@@ -8,21 +8,17 @@
MKIMAGE := $(srctree)/scripts/mkuboot.sh
-targets := vmImage vmImage.bin vmImage.bz2 vmImage.gz vmImage.lzma
-extra-y += vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma
+targets := vmImage vmImage.bin vmImage.bz2 vmImage.gz vmImage.lzma vmImage.xip
+extra-y += vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma vmlinux.bin.xip
UIMAGE_OPTS-y :=
-UIMAGE_OPTS-$(CONFIG_RAMKERNEL) += \
- -a $(CONFIG_BOOT_LOAD) \
- -e $(shell $(NM) vmlinux | awk '$$NF == "__start" {print $$1}')
-UIMAGE_OPTS-$(CONFIG_ROMKERNEL) += \
- -x \
- -a $(CONFIG_ROM_BASE) \
- -e $$( printf '%x' $$(( $(CONFIG_ROM_BASE) + 64 )) )
+UIMAGE_OPTS-$(CONFIG_RAMKERNEL) += -a $(CONFIG_BOOT_LOAD)
+UIMAGE_OPTS-$(CONFIG_ROMKERNEL) += -a $(CONFIG_ROM_BASE) -x
quiet_cmd_uimage = UIMAGE $@
cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A $(ARCH) -O linux -T kernel \
- -C $(2) -n '$(MACHINE)-$(KERNELRELEASE)' -a $(CONFIG_BOOT_LOAD) \
+ -C $(2) -n '$(MACHINE)-$(KERNELRELEASE)' \
+ -e $(shell $(NM) vmlinux | awk '$$NF == "__start" {print $$1}') \
$(UIMAGE_OPTS-y) -d $< $@
$(obj)/vmlinux.bin: vmlinux FORCE
@@ -37,6 +33,12 @@
$(obj)/vmlinux.bin.lzma: $(obj)/vmlinux.bin FORCE
$(call if_changed,lzma)
+# The mkimage tool wants 64bytes prepended to the image
+quiet_cmd_mk_bin_xip = BIN $@
+ cmd_mk_bin_xip = ( printf '%64s' | tr ' ' '\377' ; cat $< ) > $@
+$(obj)/vmlinux.bin.xip: $(obj)/vmlinux.bin FORCE
+ $(call if_changed,mk_bin_xip)
+
$(obj)/vmImage.bin: $(obj)/vmlinux.bin
$(call if_changed,uimage,none)
@@ -49,10 +51,15 @@
$(obj)/vmImage.lzma: $(obj)/vmlinux.bin.lzma
$(call if_changed,uimage,lzma)
+$(obj)/vmImage.xip: $(obj)/vmlinux.bin.xip
+ $(call if_changed,uimage,none)
+
suffix-y := bin
suffix-$(CONFIG_KERNEL_GZIP) := gz
suffix-$(CONFIG_KERNEL_BZIP2) := bz2
suffix-$(CONFIG_KERNEL_LZMA) := lzma
+suffix-$(CONFIG_ROMKERNEL) := xip
+
$(obj)/vmImage: $(obj)/vmImage.$(suffix-y)
@ln -sf $(notdir $<) $@
Modified: trunk/arch/blackfin/kernel/vmlinux.lds.S (8198 => 8199)
--- trunk/arch/blackfin/kernel/vmlinux.lds.S 2010-01-19 23:33:08 UTC (rev 8198)
+++ trunk/arch/blackfin/kernel/vmlinux.lds.S 2010-01-20 00:01:26 UTC (rev 8199)
@@ -31,7 +31,6 @@
__text = .;
_text = .;
__stext = .;
- *(.romhead.text)
TEXT_TEXT
#ifndef CONFIG_SCHEDULE_L1
SCHED_TEXT
Modified: trunk/arch/blackfin/mach-common/head.S (8198 => 8199)
--- trunk/arch/blackfin/mach-common/head.S 2010-01-19 23:33:08 UTC (rev 8198)
+++ trunk/arch/blackfin/mach-common/head.S 2010-01-20 00:01:26 UTC (rev 8199)
@@ -13,19 +13,22 @@
#include <asm/trace.h>
#include <asm/asm-offsets.h>
-#ifdef CONFIG_ROMKERNEL
-.section ".romhead.text","ax"
-#else
__INIT
-#endif
+ENTRY(__init_clear_bss)
+ r2 = r2 - r1;
+ cc = r2 == 0;
+ if cc jump .L_bss_done;
+ r2 >>= 2;
+ p1 = r1;
+ p2 = r2;
+ lsetup (1f, 1f) lc0 = p2;
+1: [p1++] = r0;
+.L_bss_done:
+ rts;
+ENDPROC(__init_clear_bss)
+
ENTRY(__start)
-#ifdef CONFIG_ROMKERNEL
- /* mkimage requires entry address = load address + 64 */
- .rept 16;
- .long 0xFFFFFFFF
- .endr
-#endif
/* R0: argument of command line string, passed from uboot, save it */
R7 = R0;
/* Enable Cycle Counter and Nesting Of Interrupts */
@@ -241,21 +244,6 @@
jump .LWAIT_HERE;
ENDPROC(__start)
-__INIT
-
-ENTRY(__init_clear_bss)
- r2 = r2 - r1;
- cc = r2 == 0;
- if cc jump .L_bss_done;
- r2 >>= 2;
- p1 = r1;
- p2 = r2;
- lsetup (1f, 1f) lc0 = p2;
-1: [p1++] = r0;
-.L_bss_done:
- rts;
-ENDPROC(__init_clear_bss)
-
/* A little BF561 glue ... */
#ifndef WDOG_CTL
# define WDOG_CTL WDOGA_CTL
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