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-rw-r--r--arch/ppc64/boot/Makefile53
-rw-r--r--arch/ppc64/boot/main.c31
2 files changed, 59 insertions, 25 deletions
diff --git a/arch/ppc64/boot/Makefile b/arch/ppc64/boot/Makefile
index 2c5f5e73d00..33fdc871089 100644
--- a/arch/ppc64/boot/Makefile
+++ b/arch/ppc64/boot/Makefile
@@ -37,6 +37,9 @@ quiet_cmd_bootcc = BOOTCC $@
quiet_cmd_bootas = BOOTAS $@
cmd_bootas = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTAFLAGS) -c -o $@ $<
+quiet_cmd_bootld = BOOTLD $@
+ cmd_bootld = $(CROSS32LD) $(BOOTLFLAGS) -o $@ $(2)
+
$(patsubst %.c,%.o, $(filter %.c, $(src-boot))): %.o: %.c
$(call if_changed_dep,bootcc)
$(patsubst %.S,%.o, $(filter %.S, $(src-boot))): %.o: %.S
@@ -53,7 +56,7 @@ src-sec = $(foreach section, $(1), $(patsubst %,$(obj)/kernel-%.c, $(section)))
gz-sec = $(foreach section, $(1), $(patsubst %,$(obj)/kernel-%.gz, $(section)))
hostprogs-y := addnote addRamDisk
-targets += zImage zImage.initrd imagesize.c \
+targets += zImage.vmode zImage.initrd.vmode zImage zImage.initrd imagesize.c \
$(patsubst $(obj)/%,%, $(call obj-sec, $(required) $(initrd))) \
$(patsubst $(obj)/%,%, $(call src-sec, $(required) $(initrd))) \
$(patsubst $(obj)/%,%, $(call gz-sec, $(required) $(initrd))) \
@@ -63,7 +66,7 @@ extra-y := initrd.o
quiet_cmd_ramdisk = RAMDISK $@
cmd_ramdisk = $(obj)/addRamDisk $(obj)/ramdisk.image.gz $< $@
-quiet_cmd_stripvm = STRIP $@
+quiet_cmd_stripvm = STRIP $@
cmd_stripvm = $(STRIP) -s $< -o $@
vmlinux.strip: vmlinux FORCE
@@ -71,12 +74,20 @@ vmlinux.strip: vmlinux FORCE
$(obj)/vmlinux.initrd: vmlinux.strip $(obj)/addRamDisk $(obj)/ramdisk.image.gz FORCE
$(call if_changed,ramdisk)
-addsection = $(CROSS32OBJCOPY) $(1) \
- --add-section=.kernel:$(strip $(patsubst $(obj)/kernel-%.o,%, $(1)))=$(patsubst %.o,%.gz, $(1)) \
- --set-section-flags=.kernel:$(strip $(patsubst $(obj)/kernel-%.o,%, $(1)))=$(OBJCOPYFLAGS)
+quiet_cmd_addsection = ADDSEC $@
+ cmd_addsection = $(CROSS32OBJCOPY) $@ \
+ --add-section=.kernel:$(strip $(patsubst $(obj)/kernel-%.o,%, $@))=$(patsubst %.o,%.gz, $@) \
+ --set-section-flags=.kernel:$(strip $(patsubst $(obj)/kernel-%.o,%, $@))=$(OBJCOPYFLAGS)
+
+quiet_cmd_imagesize = GENSIZE $@
+ cmd_imagesize = ls -l vmlinux.strip | \
+ awk '{printf "/* generated -- do not edit! */\n" "unsigned long vmlinux_filesize = %d;\n", $$5}' \
+ > $(obj)/imagesize.c && \
+ $(CROSS_COMPILE)nm -n vmlinux | tail -n 1 | \
+ awk '{printf "unsigned long vmlinux_memsize = 0x%s;\n", substr($$1,8)}' >> $(obj)/imagesize.c
-quiet_cmd_addnote = ADDNOTE $@
- cmd_addnote = $(CROSS32LD) $(BOOTLFLAGS) -o $@ $(obj-boot) && $(obj)/addnote $@
+quiet_cmd_addnote = ADDNOTE $@
+ cmd_addnote = $(obj)/addnote $@
$(call gz-sec, $(required)): $(obj)/kernel-%.gz: % FORCE
$(call if_changed,gzip)
@@ -85,28 +96,30 @@ $(obj)/kernel-initrd.gz: $(obj)/ramdisk.image.gz
cp -f $(obj)/ramdisk.image.gz $@
$(call src-sec, $(required) $(initrd)): $(obj)/kernel-%.c: $(obj)/kernel-%.gz FORCE
- touch $@
+ @touch $@
$(call obj-sec, $(required) $(initrd)): $(obj)/kernel-%.o: $(obj)/kernel-%.c FORCE
$(call if_changed_dep,bootcc)
- $(call addsection, $@)
+ $(call cmd,addsection)
+
+$(obj)/zImage.vmode: obj-boot += $(call obj-sec, $(required))
+$(obj)/zImage.vmode: $(call obj-sec, $(required)) $(obj-boot) FORCE
+ $(call cmd,bootld,$(obj-boot))
+
+$(obj)/zImage.initrd.vmode: obj-boot += $(call obj-sec, $(required) $(initrd))
+$(obj)/zImage.initrd.vmode: $(call obj-sec, $(required) $(initrd)) $(obj-boot) FORCE
+ $(call cmd,bootld,$(obj-boot))
-$(obj)/zImage: obj-boot += $(call obj-sec, $(required))
-$(obj)/zImage: $(call obj-sec, $(required)) $(obj-boot) $(obj)/addnote FORCE
+$(obj)/zImage: $(obj)/zImage.vmode $(obj)/addnote FORCE
+ @cp -f $< $@
$(call if_changed,addnote)
-$(obj)/zImage.initrd: obj-boot += $(call obj-sec, $(required) $(initrd))
-$(obj)/zImage.initrd: $(call obj-sec, $(required) $(initrd)) $(obj-boot) $(obj)/addnote FORCE
+$(obj)/zImage.initrd: $(obj)/zImage.initrd.vmode $(obj)/addnote FORCE
+ @cp -f $< $@
$(call if_changed,addnote)
$(obj)/imagesize.c: vmlinux.strip
- @echo Generating $@
- ls -l vmlinux.strip | \
- awk '{printf "/* generated -- do not edit! */\n" \
- "unsigned long vmlinux_filesize = %d;\n", $$5}' > $(obj)/imagesize.c
- $(CROSS_COMPILE)nm -n vmlinux | tail -n 1 | \
- awk '{printf "unsigned long vmlinux_memsize = 0x%s;\n", substr($$1,8)}' \
- >> $(obj)/imagesize.c
+ $(call cmd,imagesize)
install: $(CONFIGURE) $(BOOTIMAGE)
sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" vmlinux System.map "$(INSTALL_PATH)" "$(BOOTIMAGE)"
diff --git a/arch/ppc64/boot/main.c b/arch/ppc64/boot/main.c
index 99e68cfbe68..f7ec19a2d0b 100644
--- a/arch/ppc64/boot/main.c
+++ b/arch/ppc64/boot/main.c
@@ -23,7 +23,8 @@ extern void flush_cache(void *, unsigned long);
/* Value picked to match that used by yaboot */
#define PROG_START 0x01400000
-#define RAM_END (256<<20) // Fixme: use OF */
+#define RAM_END (512<<20) // Fixme: use OF */
+#define ONE_MB 0x100000
static char *avail_ram;
static char *begin_avail, *end_avail;
@@ -32,6 +33,7 @@ static unsigned int heap_use;
static unsigned int heap_max;
extern char _start[];
+extern char _end[];
extern char _vmlinux_start[];
extern char _vmlinux_end[];
extern char _initrd_start[];
@@ -58,13 +60,13 @@ typedef void (*kernel_entry_t)( unsigned long,
#undef DEBUG
-static unsigned long claim_base = PROG_START;
+static unsigned long claim_base;
static unsigned long try_claim(unsigned long size)
{
unsigned long addr = 0;
- for(; claim_base < RAM_END; claim_base += 0x100000) {
+ for(; claim_base < RAM_END; claim_base += ONE_MB) {
#ifdef DEBUG
printf(" trying: 0x%08lx\n\r", claim_base);
#endif
@@ -95,7 +97,26 @@ void start(unsigned long a1, unsigned long a2, void *promptr)
if (getprop(chosen_handle, "stdin", &stdin, sizeof(stdin)) != 4)
exit();
- printf("\n\rzImage starting: loaded at 0x%x\n\r", (unsigned)_start);
+ printf("\n\rzImage starting: loaded at 0x%lx\n\r", (unsigned long) _start);
+
+ /*
+ * The first available claim_base must be above the end of the
+ * the loaded kernel wrapper file (_start to _end includes the
+ * initrd image if it is present) and rounded up to a nice
+ * 1 MB boundary for good measure.
+ */
+
+ claim_base = _ALIGN_UP((unsigned long)_end, ONE_MB);
+
+#if defined(PROG_START)
+ /*
+ * Maintain a "magic" minimum address. This keeps some older
+ * firmware platforms running.
+ */
+
+ if (claim_base < PROG_START)
+ claim_base = PROG_START;
+#endif
/*
* Now we try to claim some memory for the kernel itself
@@ -105,7 +126,7 @@ void start(unsigned long a1, unsigned long a2, void *promptr)
* size... In practice we add 1Mb, that is enough, but we should really
* consider fixing the Makefile to put a _raw_ kernel in there !
*/
- vmlinux_memsize += 0x100000;
+ vmlinux_memsize += ONE_MB;
printf("Allocating 0x%lx bytes for kernel ...\n\r", vmlinux_memsize);
vmlinux.addr = try_claim(vmlinux_memsize);
if (vmlinux.addr == 0) {
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2025-02-04 23:48:27 +0000