From 701e2a38fef4fce862eaeb21fc97874a6387a569 Mon Sep 17 00:00:00 2001
From: Jonas Gorski <jogo@openwrt.org>
Date: Fri, 1 Aug 2014 21:56:31 +0000
Subject: brcm63xx: add working lzma-loader and use it for initramfs

Add a working lzma loader and use it for generating initramfs kernels
to allow easily netbooting elf kernels on devices with a 4 MiB CFE
size limit.

Based on ar71xx's lzma-loader.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>

SVN-Revision: 41940
---
 target/linux/brcm63xx/image/lzma-loader/Makefile | 55 ++++++++++++++++++------
 1 file changed, 42 insertions(+), 13 deletions(-)

(limited to 'target/linux/brcm63xx/image/lzma-loader/Makefile')

diff --git a/target/linux/brcm63xx/image/lzma-loader/Makefile b/target/linux/brcm63xx/image/lzma-loader/Makefile
index 5dd6f50..8d36691 100644
--- a/target/linux/brcm63xx/image/lzma-loader/Makefile
+++ b/target/linux/brcm63xx/image/lzma-loader/Makefile
@@ -1,5 +1,6 @@
-# 
-# Copyright (C) 2006 OpenWrt.org
+#
+# Copyright (C) 2011 OpenWrt.org
+# Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org>
 #
 # This is free software, licensed under the GNU General Public License v2.
 # See /LICENSE for more information.
@@ -7,27 +8,55 @@
 
 include $(TOPDIR)/rules.mk
 
+LZMA_TEXT_START	:= 0x80a00000
+LOADER		:= loader.bin
+LOADER_NAME	:= $(basename $(notdir $(LOADER)))
+LOADER_DATA 	:=
+TARGET_DIR	:=
+FLASH_OFFS	:=
+FLASH_MAX	:=
+
+ifeq ($(TARGET_DIR),)
+TARGET_DIR	:= $(KDIR)
+endif
+
+LOADER_BIN	:= $(TARGET_DIR)/$(LOADER_NAME).bin
+LOADER_GZ	:= $(TARGET_DIR)/$(LOADER_NAME).gz
+LOADER_ELF	:= $(TARGET_DIR)/$(LOADER_NAME).elf
+
 PKG_NAME := lzma-loader
-PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
+PKG_BUILD_DIR := $(KDIR)/$(PKG_NAME)
+
+.PHONY : loader-compile loader.bin loader.elf loader.gz
 
 $(PKG_BUILD_DIR)/.prepared:
 	mkdir $(PKG_BUILD_DIR)
 	$(CP) ./src/* $(PKG_BUILD_DIR)/
 	touch $@
 
-$(PKG_BUILD_DIR)/loader.gz: $(PKG_BUILD_DIR)/.prepared
-	$(MAKE) -C $(PKG_BUILD_DIR) CC="$(TARGET_CC)" \
-		LD="$(TARGET_CROSS)ld" CROSS_COMPILE="$(TARGET_CROSS)"
+loader-compile: $(PKG_BUILD_DIR)/.prepared
+	$(MAKE) -C $(PKG_BUILD_DIR) CROSS_COMPILE="$(TARGET_CROSS)" \
+		LZMA_TEXT_START=$(LZMA_TEXT_START) \
+		LOADER_DATA=$(LOADER_DATA) \
+		FLASH_OFFS=$(FLASH_OFFS) \
+		FLASH_MAX=$(FLASH_MAX) \
+		clean all
+
+loader.gz: $(PKG_BUILD_DIR)/loader.bin
+	gzip -nc9 $< > $(LOADER_GZ)
 
-download: 
+loader.elf: $(PKG_BUILD_DIR)/loader.elf
+	$(CP) $< $(LOADER_ELF)
+
+loader.bin: $(PKG_BUILD_DIR)/loader.bin
+	$(CP) $< $(LOADER_BIN)
+
+download:
 prepare: $(PKG_BUILD_DIR)/.prepared
-compile: $(PKG_BUILD_DIR)/loader.gz
-install:
+compile: loader-compile
 
-ifneq ($(TARGET),)
-install: compile
-	$(CP) $(PKG_BUILD_DIR)/loader.gz $(PKG_BUILD_DIR)/loader.elf $(TARGET)/
-endif
+install:
 
 clean:
 	rm -rf $(PKG_BUILD_DIR)
+
-- 
cgit v1.1