The current model of loader copy "rom blobs" and kept in memory until a reset
occurs and waste host memory.
This serial of patches set uimage/initrd/vmlinux as reloadable images and use
private reset handlers to load these images from hard disk on reset, which
could
make loader framework more dynamic and reduce the memory consumption of QEMU
process.
Provides new API do_info_images() to display the information about the
reloadable
images (uImage/initrd/vmlinux).
Olivia Yin (4):
use image_file_reset to reload initrd
use uimage_reset to reload uImage
use elf_reset to reload elf image
use info images to check images which could be reloaded on reset
hw/elf_ops.h | 54 +++++++++++++++++--
hw/loader.c | 147 +++++++++++++++++++++++++++++++++++++++++++++-------
hw/loader.h | 36 +++++++++++--
hw/ppc/e500.c | 2 +-
hw/ppc440_bamboo.c | 2 +-
monitor.c | 7 +++
6 files changed, 218 insertions(+), 30 deletions(-)
v10:
patch 2/4: add error check in uimage_reset() and remove UImageFile structure
patch 4/4: modify the format of 'info images'
For example,
(qemu) info images
ImageType File PhyAddr
MemSize
uImage /media/ram/uImage 0000000000000000
0x7a28c0
raw /media/ram/ramdisk 0000000002000000
0x3f922f
(qemu) info images
ImageType File PhyAddr
MemSize
ELF phdr #0: /media/ram/vmlinux 0000000000000000
0x709a0c
raw /media/ram/ramdisk 0000000002000000
0x3f922f
v9:
patch 4/4: set uimage/initrd/vmlinux as reloadable and free them on rom_reset;
use 'info images' to display the information of reloadable images
For example,
(qemu) info images
load_addr=0000000000000000 size=0x07cac80 type=UIMAGE file="uImage"
load_addr=0000000002000000 size=0x188e844 type=FLAT file="ramdisk"
(qemu) info images
load_addr=0000000000000000 size=0x0709a0c type=FLAT file="vmlinux"
load_addr=0000000002000000 size=0x188e844 type=FLAT file="ramdisk"
v8: unify the structure ImageFile for uimage/initrd/vmlinux, and remove
rom_reset().
v7: clean structure ImageFile
v6:
patch 3/4: load symbol only when startup
v5:
patch 2/4: remove global variables is_linux and kernel_loaded.
patch 3/4: register reset handlers in loader.c for elf images.
extract the duplicated source code into function elf_phy_loader().
patch 4/4: fix the issue of memory increasing (about 1.4MB) once reload elf
image.
v4: fix elf reload and register reset handler in hw/elf_ops.h
v3: reload elf
v2: Rename target_phys_addr_t to hwaddr
v1: support uimage/initrd reload
