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hw/core/loader: implement address translation in uimage loader 

Such address translation is needed when load address recorded in uImage
is a virtual address. When the actual load address is requested, return
untranslated address: user that needs the translated address can always
apply translation function to it and those that need it untranslated
don't need to do the inverse translation.

Add translation function pointer and its parameter to uimage_load
prototype. Update all existing users.

No user-visible functional changes.

Cc: qemu-stable@nongnu.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Max Filippov 2014-10-19 07:42:22 +04:00
parent c9e9521fcb
commit 25bda50a0c
11 changed files with 32 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
hw/arm/boot.c
View File

@ -580,7 +580,7 @@ void arm_load_kernel(ARMCPU *cpu, struct arm_boot_info *info)
entry = elf_entry;
if (kernel_size < 0) {
kernel_size = load_uimage(info->kernel_filename, &entry, NULL,
&is_linux);
&is_linux, NULL, NULL);
}
/* On aarch64, it's the bootloader's job to uncompress the kernel. */
if (arm_feature(&cpu->env, ARM_FEATURE_AARCH64) && kernel_size < 0) {

17
hw/core/loader.c
View File

@ -477,7 +477,9 @@ static ssize_t gunzip(void *dst, size_t dstlen, uint8_t *src,
/* Load a U-Boot image. */
static int load_uboot_image(const char *filename, hwaddr *ep, hwaddr *loadaddr,
int *is_linux, uint8_t image_type)
int *is_linux, uint8_t image_type,
uint64_t (*translate_fn)(void *, uint64_t),
void *translate_opaque)
{
int fd;
int size;
@ -511,6 +513,9 @@ static int load_uboot_image(const char *filename, hwaddr *ep, hwaddr *loadaddr,
switch (hdr->ih_type) {
case IH_TYPE_KERNEL:
address = hdr->ih_load;
if (translate_fn) {
address = translate_fn(translate_opaque, address);
}
if (loadaddr) {
*loadaddr = hdr->ih_load;
}
@ -587,15 +592,19 @@ out:
}
int load_uimage(const char *filename, hwaddr *ep, hwaddr *loadaddr,
int *is_linux)
int *is_linux,
uint64_t (*translate_fn)(void *, uint64_t),
void *translate_opaque)
{
return load_uboot_image(filename, ep, loadaddr, is_linux, IH_TYPE_KERNEL);
return load_uboot_image(filename, ep, loadaddr, is_linux, IH_TYPE_KERNEL,
translate_fn, translate_opaque);
}
/* Load a ramdisk. */
int load_ramdisk(const char *filename, hwaddr addr, uint64_t max_sz)
{
return load_uboot_image(filename, NULL, &addr, NULL, IH_TYPE_RAMDISK);
return load_uboot_image(filename, NULL, &addr, NULL, IH_TYPE_RAMDISK,
NULL, NULL);
}
/* This simply prevents g_malloc in the function below from allocating

3
hw/m68k/an5206.c
View File

@ -74,7 +74,8 @@ static void an5206_init(MachineState *machine)
NULL, NULL, 1, ELF_MACHINE, 0);
entry = elf_entry;
if (kernel_size < 0) {
kernel_size = load_uimage(kernel_filename, &entry, NULL, NULL);
kernel_size = load_uimage(kernel_filename, &entry, NULL, NULL,
NULL, NULL);
}
if (kernel_size < 0) {
kernel_size = load_image_targphys(kernel_filename, KERNEL_LOAD_ADDR,

3
hw/m68k/dummy_m68k.c
View File

@ -50,7 +50,8 @@ static void dummy_m68k_init(MachineState *machine)
NULL, NULL, 1, ELF_MACHINE, 0);
entry = elf_entry;
if (kernel_size < 0) {
kernel_size = load_uimage(kernel_filename, &entry, NULL, NULL);
kernel_size = load_uimage(kernel_filename, &entry, NULL, NULL,
NULL, NULL);
}
if (kernel_size < 0) {
kernel_size = load_image_targphys(kernel_filename,

3
hw/m68k/mcf5208.c
View File

@ -279,7 +279,8 @@ static void mcf5208evb_init(MachineState *machine)
NULL, NULL, 1, ELF_MACHINE, 0);
entry = elf_entry;
if (kernel_size < 0) {
kernel_size = load_uimage(kernel_filename, &entry, NULL, NULL);
kernel_size = load_uimage(kernel_filename, &entry, NULL, NULL,
NULL, NULL);
}
if (kernel_size < 0) {
kernel_size = load_image_targphys(kernel_filename, 0x40000000,

3
hw/microblaze/boot.c
View File

@ -154,7 +154,8 @@ void microblaze_load_kernel(MicroBlazeCPU *cpu, hwaddr ddr_base,
if (kernel_size < 0) {
hwaddr uentry, loadaddr;
kernel_size = load_uimage(kernel_filename, &uentry, &loadaddr, 0);
kernel_size = load_uimage(kernel_filename, &uentry, &loadaddr, 0,
NULL, NULL);
boot_info.bootstrap_pc = uentry;
high = (loadaddr + kernel_size + 3) & ~3;
}

2
hw/openrisc/openrisc_sim.c
View File

@ -72,7 +72,7 @@ static void cpu_openrisc_load_kernel(ram_addr_t ram_size,
entry = elf_entry;
if (kernel_size < 0) {
kernel_size = load_uimage(kernel_filename,
&entry, NULL, NULL);
&entry, NULL, NULL, NULL, NULL);
}
if (kernel_size < 0) {
kernel_size = load_image_targphys(kernel_filename,

3
hw/ppc/e500.c
View File

@ -830,7 +830,8 @@ void ppce500_init(MachineState *machine, PPCE500Params *params)
* Hrm. No ELF image? Try a uImage, maybe someone is giving us an
* ePAPR compliant kernel
*/
kernel_size = load_uimage(filename, &bios_entry, &loadaddr, NULL);
kernel_size = load_uimage(filename, &bios_entry, &loadaddr, NULL,
NULL, NULL);
if (kernel_size < 0) {
fprintf(stderr, "qemu: could not load firmware '%s'\n", filename);
exit(1);

3
hw/ppc/ppc440_bamboo.c
View File

@ -253,7 +253,8 @@ static void bamboo_init(MachineState *machine)
/* Load kernel. */
if (kernel_filename) {
success = load_uimage(kernel_filename, &entry, &loadaddr, NULL);
success = load_uimage(kernel_filename, &entry, &loadaddr, NULL,
NULL, NULL);
if (success < 0) {
success = load_elf(kernel_filename, NULL, NULL, &elf_entry,
&elf_lowaddr, NULL, 1, ELF_MACHINE, 0);

3
hw/xtensa/xtfpga.c
View File

@ -328,7 +328,8 @@ static void lx_init(const LxBoardDesc *board, MachineState *machine)
} else {
hwaddr ep;
int is_linux;
success = load_uimage(kernel_filename, &ep, NULL, &is_linux);
success = load_uimage(kernel_filename, &ep, NULL, &is_linux,
NULL, NULL);
if (success > 0 && is_linux) {
entry_point = ep;
} else {

4
include/hw/loader.h
View File

@ -30,7 +30,9 @@ int load_elf(const char *filename, uint64_t (*translate_fn)(void *, uint64_t),
int load_aout(const char *filename, hwaddr addr, int max_sz,
int bswap_needed, hwaddr target_page_size);
int load_uimage(const char *filename, hwaddr *ep,
hwaddr *loadaddr, int *is_linux);
hwaddr *loadaddr, int *is_linux,
uint64_t (*translate_fn)(void *, uint64_t),
void *translate_opaque);
/**
* load_ramdisk: