Introduce 'load_ramdisk()' which can load "normal" ramdisks and ramdisks
with a u-boot header.
To enable this and leverage synergies 'load_uimage()' is refactored to
accomodate this additional use case.
Signed-off-by: Soren Brinkmann <soren.brinkm...@xilinx.com>
---
hw/core/loader.c | 86 +++++++++++++++++++++++++++++++++++++----------------
include/hw/loader.h | 1 +
2 files changed, 61 insertions(+), 26 deletions(-)
diff --git a/hw/core/loader.c b/hw/core/loader.c
index 7507914..e72d682 100644
--- a/hw/core/loader.c
+++ b/hw/core/loader.c
@@ -434,15 +434,17 @@ static ssize_t gunzip(void *dst, size_t dstlen, uint8_t
*src,
}
/* Load a U-Boot image. */
-int load_uimage(const char *filename, hwaddr *ep,
- hwaddr *loadaddr, int *is_linux)
+static int load_uboot_image(const char *filename, hwaddr *ep, hwaddr *loadaddr,
+ int *is_linux)
{
int fd;
int size;
+ hwaddr address;
uboot_image_header_t h;
uboot_image_header_t *hdr = &h;
uint8_t *data = NULL;
int ret = -1;
+ int do_uncompress = 0;
fd = open(filename, O_RDONLY | O_BINARY);
if (fd < 0)
@@ -458,31 +460,48 @@ int load_uimage(const char *filename, hwaddr *ep,
goto out;
/* TODO: Implement other image types. */
- if (hdr->ih_type != IH_TYPE_KERNEL) {
- fprintf(stderr, "Can only load u-boot image type \"kernel\"\n");
- goto out;
- }
+ switch (hdr->ih_type) {
+ case IH_TYPE_KERNEL:
+ address = hdr->ih_load;
+ if (loadaddr) {
+ *loadaddr = hdr->ih_load;
+ }
+
+ switch (hdr->ih_comp) {
+ case IH_COMP_NONE:
+ break;
+ case IH_COMP_GZIP:
+ do_uncompress = 1;
+ break;
+ default:
+ fprintf(stderr,
+ "Unable to load u-boot images with compression type %d\n",
+ hdr->ih_comp);
+ goto out;
+ }
+
+ if (ep) {
+ *ep = hdr->ih_ep;
+ }
- switch (hdr->ih_comp) {
- case IH_COMP_NONE:
- case IH_COMP_GZIP:
+ /* TODO: Check CPU type. */
+ if (is_linux) {
+ if (hdr->ih_os == IH_OS_LINUX) {
+ *is_linux = 1;
+ } else {
+ *is_linux = 0;
+ }
+ }
+
+ break;
+ case IH_TYPE_RAMDISK:
+ address = *loadaddr;
break;
default:
- fprintf(stderr,
- "Unable to load u-boot images with compression type %d\n",
- hdr->ih_comp);
+ fprintf(stderr, "Unsupported u-boot image type\n");
goto out;
}
- /* TODO: Check CPU type. */
- if (is_linux) {
- if (hdr->ih_os == IH_OS_LINUX)
- *is_linux = 1;
- else
- *is_linux = 0;
- }
-
- *ep = hdr->ih_ep;
data = g_malloc(hdr->ih_size);
if (read(fd, data, hdr->ih_size) != hdr->ih_size) {
@@ -490,7 +509,7 @@ int load_uimage(const char *filename, hwaddr *ep,
goto out;
}
- if (hdr->ih_comp == IH_COMP_GZIP) {
+ if (do_uncompress) {
uint8_t *compressed_data;
size_t max_bytes;
ssize_t bytes;
@@ -508,10 +527,7 @@ int load_uimage(const char *filename, hwaddr *ep,
hdr->ih_size = bytes;
}
- rom_add_blob_fixed(filename, data, hdr->ih_size, hdr->ih_load);
-
- if (loadaddr)
- *loadaddr = hdr->ih_load;
+ rom_add_blob_fixed(filename, data, hdr->ih_size, address);
ret = hdr->ih_size;
@@ -522,6 +538,24 @@ out:
return ret;
}
+int load_uimage(const char *filename, hwaddr *ep, hwaddr *loadaddr,
+ int *is_linux)
+{
+ return load_uboot_image(filename, ep, loadaddr, is_linux);
+}
+
+/* Load a ramdisk. */
+int load_ramdisk(const char *filename, hwaddr addr, uint64_t max_sz)
+{
+ int size = load_uboot_image(filename, NULL, &addr, NULL);
+
+ if (size < 0) {
+ size = load_image_targphys(filename, addr, max_sz);
+ }
+
+ return size;
+}
+
/*
* Functions for reboot-persistent memory regions.
* - used for vga bios and option roms.
diff --git a/include/hw/loader.h b/include/hw/loader.h
index 0958f06..8ef403e 100644
--- a/include/hw/loader.h
+++ b/include/hw/loader.h
@@ -15,6 +15,7 @@ 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);
+int load_ramdisk(const char *filename, hwaddr addr, uint64_t max_sz);
ssize_t read_targphys(const char *name,
int fd, hwaddr dst_addr, size_t nbytes);
--
1.8.3.1
