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

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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
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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