Make a one line replacement for SLOF. This bootloader just
jumps to 0x400000, because we know the kernel will be there.
This commit allows rebuilding of the bootloader, as long
as the SLOF build_romfs tool is present, but since it would be
a pain to require that tool for ever build, we'll just commit
the binary rom image too with the next commit.
Signed-off-by: Andrew Jones <drjones@xxxxxxxxxx>
---
powerpc/rom/.gitignore | 1 +
powerpc/rom/Makefile | 36 ++++++++++++++++++++++++++++++++++++
powerpc/rom/header.img | 1 +
powerpc/rom/rom.ffs | 4 ++++
powerpc/rom/stage1.S | 5 +++++
5 files changed, 47 insertions(+)
create mode 100644 powerpc/rom/.gitignore
create mode 100644 powerpc/rom/Makefile
create mode 100644 powerpc/rom/header.img
create mode 100644 powerpc/rom/rom.ffs
create mode 100644 powerpc/rom/stage1.S
diff --git a/powerpc/rom/.gitignore b/powerpc/rom/.gitignore
new file mode 100644
index 0000000000000..a8a0dcec44720
--- /dev/null
+++ b/powerpc/rom/.gitignore
@@ -0,0 +1 @@
+*.bin
diff --git a/powerpc/rom/Makefile b/powerpc/rom/Makefile
new file mode 100644
index 0000000000000..03b8bf7e0b5d2
--- /dev/null
+++ b/powerpc/rom/Makefile
@@ -0,0 +1,36 @@
+#
+# powerpc boot_rom makefile
+#
+# Authors: Andrew Jones <drjones@xxxxxxxxxx>
+#
+
+# Use SLOF's build_romfs tool (git://git.qemu-project.org/SLOF.git)
+BUILD_ROMFS ?= build_romfs
+
+ifeq ($(wildcard ../../config.mak),)
+$(error run ./configure first. See ./configure -h)
+endif
+
+include ../../config.mak
+
+.PHONY: clean distclean
+
+all: boot_rom.bin
+
+boot_rom.bin: stage1.bin
+ $(BUILD_ROMFS) rom.ffs boot_rom.bin
+
+stage1.bin: stage1.elf
+ $(OBJCOPY) -O binary $^ $@
+
+stage1.elf: stage1.o
+ $(LD) -nostdlib -Ttext=0x100 --entry=start --build-id=none -o $@ $<
+
+stage1.o: stage1.S
+ $(CC) -c -o $@ $<
+
+clean:
+ $(RM) stage1.{o,elf,bin}
+
+distclean: clean
+ $(RM) boot_rom.bin
diff --git a/powerpc/rom/header.img b/powerpc/rom/header.img
new file mode 100644
index 0000000000000..794129c95eec5
--- /dev/null
+++ b/powerpc/rom/header.img
@@ -0,0 +1 @@
+Key.Polynome....XXXXXXXX..Mask..XXXXXXXX.Polynome.Length....XXXX.Header.and.File.lengthXXXXXXXX... und weiter im Text!
diff --git a/powerpc/rom/rom.ffs b/powerpc/rom/rom.ffs
new file mode 100644
index 0000000000000..b7851c00c462b
--- /dev/null
+++ b/powerpc/rom/rom.ffs
@@ -0,0 +1,4 @@
+# FFile-Name Real Filename Flags ROM-Offset i/a
+#--------------|-------------------------------|-----------------------|--------------
+header header.img 0 0
+stage1 stage1.bin 1 0x100
diff --git a/powerpc/rom/stage1.S b/powerpc/rom/stage1.S
new file mode 100644
index 0000000000000..ae2c08ddce3c1
--- /dev/null
+++ b/powerpc/rom/stage1.S
@@ -0,0 +1,5 @@
+#define SPAPR_KERNEL_LOAD_ADDR 0x400000
+.text
+.globl start
+start:
+ b SPAPR_KERNEL_LOAD_ADDR - 0x100
--
2.4.3
--
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