[U-Boot] [PATCH] spl: net: Add FIT image support over network boot
Andrew F. Davis
afd at ti.com
Tue Feb 7 22:59:14 UTC 2017
FIT support in the net boot case is much like the RAM boot case in that
we load our image to "load_addr" and pass a dummy read function into
"spl_load_simple_fit()". As the load address is no longer hard-coded to
the final execution address, RAW image loading will rely on "load_addr"
pointing to the execution address as they should have before.
Signed-off-by: Andrew F. Davis <afd at ti.com>
---
common/spl/spl_net.c | 30 +++++++++++++++++++++++++++---
1 file changed, 27 insertions(+), 3 deletions(-)
diff --git a/common/spl/spl_net.c b/common/spl/spl_net.c
index 0fba0172ea..b7a4a89198 100644
--- a/common/spl/spl_net.c
+++ b/common/spl/spl_net.c
@@ -11,19 +11,29 @@
#include <errno.h>
#include <spl.h>
#include <net.h>
+#include <libfdt.h>
DECLARE_GLOBAL_DATA_PTR;
+static ulong spl_net_load_read(struct spl_load_info *load, ulong sector,
+ ulong count, void *buf)
+{
+ debug("%s: sector %lx, count %lx, buf %lx\n",
+ __func__, sector, count, (ulong)buf);
+ memcpy(buf, (void *)(load_addr + sector), count);
+ return count;
+}
+
#if defined(CONFIG_SPL_ETH_SUPPORT) || defined(CONFIG_SPL_USBETH_SUPPORT)
static int spl_net_load_image(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev)
{
+ struct image_header *header = (struct image_header *)load_addr;
int rv;
env_init();
env_relocate();
setenv("autoload", "yes");
- load_addr = CONFIG_SYS_TEXT_BASE - sizeof(struct image_header);
rv = eth_initialize();
if (rv == 0) {
printf("No Ethernet devices found\n");
@@ -36,8 +46,22 @@ static int spl_net_load_image(struct spl_image_info *spl_image,
printf("Problem booting with BOOTP\n");
return rv;
}
- return spl_parse_image_header(spl_image,
- (struct image_header *)load_addr);
+
+ if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
+ image_get_magic(header) == FDT_MAGIC) {
+ struct spl_load_info load;
+
+ debug("Found FIT\n");
+ load.bl_len = 1;
+ load.read = spl_net_load_read;
+ rv = spl_load_simple_fit(spl_image, &load, 0, header);
+ } else {
+ debug("Legacy image\n");
+
+ rv = spl_parse_image_header(spl_image, header);
+ }
+
+ return rv;
}
#endif
--
2.11.0
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