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bcm63xx: lzma-loader: allow bigger ramdisks 

Some (older) CFEs are loaded at 0x80401000 and ramdisks are loaded at
0x80010000, which means that ramdisk size limit is 0x3F1000 (almost 4M).
Therefore, current ramdisks (~4MB) are overwritting CFE in these devices,
which results in a crash.

This commit changes the address where ramdisks are loaded to 0x80a00000,
which is the same address where kernel is loaded when booting from the flash.
Therefore, lzma-loader will now be loaded at 0x80a00000, but it will still
decompress the kernel at 0x80010000.

Tested with huawei,hg556a-b, which has its CFE loaded at 0x80401000.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
master
Álvaro Fernández Rojas 2020-06-03 13:39:50 +02:00
parent b1f26b7160
commit 6dc01cdee8
2 changed files with 6 additions and 4 deletions
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3
target/linux/bcm63xx/image/Makefile
View File

@ -15,7 +15,8 @@ LZMA_TEXT_START = 0x81800000 # 32MB - 8MB
LOADER_MAKEOPTS= \
KDIR=$(KDIR) \
LOADADDR=$(KERNEL_LOADADDR) \
LOADER_ADDR=$(LOADER_ENTRY) \
KERNEL_ADDR=$(KERNEL_LOADADDR) \
RAMSIZE=$(RAMSIZE) \
LZMA_TEXT_START=$(LZMA_TEXT_START) \
CHIP_ID=$(CHIP_ID)

7
target/linux/bcm63xx/image/lzma-loader/src/Makefile
View File

@ -17,7 +17,8 @@
# by the Free Software Foundation.
#
LOADADDR :=
LOADER_ADDR :=
KERNEL_ADDR :=
LZMA_TEXT_START := 0x80a00000
LOADER_DATA :=
@ -49,7 +50,7 @@ OBJECTS := head.o loader.o cache.o board.o printf.o LzmaDecode.o
ifneq ($(strip $(LOADER_DATA)),)
OBJECTS += data.o
CFLAGS += -DLZMA_WRAPPER=1 -DLOADADDR=$(LOADADDR)
CFLAGS += -DLZMA_WRAPPER=1 -DLOADADDR=$(KERNEL_ADDR)
endif
@ -79,7 +80,7 @@ loader2.o: loader.bin
$(LD) -r -b binary --oformat $(O_FORMAT) -o $@ $<
loader.elf: loader2.o
$(LD) -e startup -T loader2.lds -Ttext $(LOADADDR) -o $@ $<
$(LD) -e startup -T loader2.lds -Ttext $(LOADER_ADDR) -o $@ $<
mrproper: clean