A subsequent patch to ppc/spapr needs to load the RTAS blob into
qemu memory rather than target memory (so it can later be copied
into the right spot at machine reset time).
I would use load_image() but it is marked deprecated because it
doesn't take a buffer size as argument, so let's add load_image_size()
that does.
Signed-off-by: Benjamin Herrenschmidt <b...@kernel.crashing.org>
---
hw/core/loader.c | 18 ++++++++++++++++++
include/hw/loader.h | 1 +
2 files changed, 19 insertions(+)
diff --git a/hw/core/loader.c b/hw/core/loader.c
index 2bf6b8f..06e8f1e 100644
--- a/hw/core/loader.c
+++ b/hw/core/loader.c
@@ -89,6 +89,24 @@ int load_image(const char *filename, uint8_t *addr)
return size;
}
+/* return the size or -1 if error */
+ssize_t load_image_size(const char *filename, void *addr, size_t size)
+{
+ int fd;
+ ssize_t actsize;
+
+ fd = open(filename, O_RDONLY | O_BINARY);
+ if (fd < 0)
+ return -1;
+ actsize = read(fd, addr, size);
+ if (actsize < 0) {
+ close(fd);
+ return -1;
+ }
+ close(fd);
+ return actsize;
+}
+
/* read()-like version */
ssize_t read_targphys(const char *name,
int fd, hwaddr dst_addr, size_t nbytes)
diff --git a/include/hw/loader.h b/include/hw/loader.h
index 796cbf9..991f84a 100644
--- a/include/hw/loader.h
+++ b/include/hw/loader.h
@@ -13,6 +13,7 @@
*/
int get_image_size(const char *filename);
int load_image(const char *filename, uint8_t *addr); /* deprecated */
+ssize_t load_image_size(const char *filename, void *addr, size_t size);
int load_image_targphys(const char *filename, hwaddr,
uint64_t max_sz);
