motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-03 07:43:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

acpi-build: make ROMs RAM blocks resizeable

Browse source 
Use resizeable ram API so we can painlessly extend ROMs in the
future.  Note: migration is not affected, as we are
not actually changing the used length for RAM, which
is the part that's migrated.

Use this in acpi: reserve x16 more RAM space.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Michael S. Tsirkin 2014-11-17 07:51:50 +02:00
parent 60786ef339
commit a1666142db
4 changed files with 32 additions and 12 deletions
Download patch file Download diff file Expand all files Collapse all files

18
hw/core/loader.c
View file

@ -712,12 +712,22 @@ static void rom_insert(Rom *rom)
QTAILQ_INSERT_TAIL(&roms, rom, next);
}
static void fw_cfg_resized(const char *id, uint64_t length, void *host)
{
if (fw_cfg) {
fw_cfg_modify_file(fw_cfg, id + strlen("/rom@"), host, length);
}
}
static void *rom_set_mr(Rom *rom, Object *owner, const char *name)
{
void *data;
rom->mr = g_malloc(sizeof(*rom->mr));
memory_region_init_ram(rom->mr, owner, name, rom->datasize, &error_abort);
memory_region_init_resizeable_ram(rom->mr, owner, name,
rom->datasize, rom->romsize,
fw_cfg_resized,
&error_abort);
memory_region_set_readonly(rom->mr, true);
vmstate_register_ram_global(rom->mr);
@ -812,7 +822,7 @@ err:
}
ram_addr_t rom_add_blob(const char *name, const void *blob, size_t len,
hwaddr addr, const char *fw_file_name,
size_t max_len, hwaddr addr, const char *fw_file_name,
FWCfgReadCallback fw_callback, void *callback_opaque)
{
Rom *rom;
@ -821,7 +831,7 @@ ram_addr_t rom_add_blob(const char *name, const void *blob, size_t len,
rom = g_malloc0(sizeof(*rom));
rom->name = g_strdup(name);
rom->addr = addr;
rom->romsize = len;
rom->romsize = max_len ? max_len : len;
rom->datasize = len;
rom->data = g_malloc0(rom->datasize);
memcpy(rom->data, blob, len);
@ -841,7 +851,7 @@ ram_addr_t rom_add_blob(const char *name, const void *blob, size_t len,
fw_cfg_add_file_callback(fw_cfg, fw_file_name,
fw_callback, callback_opaque,
data, rom->romsize);
data, rom->datasize);
}
return ret;
}