[U-Boot] [RFC PATCH] common: image-fdt: support dts from the second address of android image

[Michael Trimarchi <michael@amarulasolutions.com>]

We can support dts load from the second address of android image.
This let us to boot board (aka freescale)

Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
---
 common/image-fdt.c | 26 ++++++++++++++++++++++++++
 include/image.h    |  2 ++
 2 files changed, 28 insertions(+)

diff --git a/common/image-fdt.c b/common/image-fdt.c
index 6cac7db..782c489 100644
--- a/common/image-fdt.c
+++ b/common/image-fdt.c
@@ -345,6 +345,31 @@ int boot_get_fdt(int flag, int argc, char * const argv[], uint8_t arch,
 			fdt_addr = load;
 			break;
 #endif
+#if defined(CONFIG_ANDROID_BOOT_IMAGE)
+			case IMAGE_FORMAT_ANDROID: {
+				ulong fdt_data, fdt_len;
+				android_image_get_dts(buf, &fdt_data, &fdt_len);
+				if (fdt_len) {
+					fdt_blob = (char *)fdt_data;
+					printf("   Booting using the fdt at 0x%p\n", fdt_blob);
+
+					if (fdt_check_header(fdt_blob) != 0) {
+						fdt_error("image is not a fdt");
+						goto error;
+					}
+
+					if (fdt_totalsize(fdt_blob) != fdt_len) {
+						fdt_error("fdt size != image size");
+						goto error;
+					}
+					goto boot_fdt;
+				} else {
+					debug("## No Flattened Device Tree\n");
+					goto no_fdt;
+				}
+			}
+			break;
+#endif
 		case IMAGE_FORMAT_FIT:
 			/*
 			 * This case will catch both: new uImage format
@@ -422,6 +447,7 @@ int boot_get_fdt(int flag, int argc, char * const argv[], uint8_t arch,
 		goto no_fdt;
 	}
 
+boot_fdt:
 	*of_flat_tree = fdt_blob;
 	*of_size = fdt_totalsize(fdt_blob);
 	debug("   of_flat_tree at 0x%08lx size 0x%08lx\n",
diff --git a/include/image.h b/include/image.h
index 61b5d3b..f475481 100644
--- a/include/image.h
+++ b/include/image.h
@@ -1147,6 +1147,8 @@ struct andr_img_hdr;
 int android_image_check_header(const struct andr_img_hdr *hdr);
 int android_image_get_kernel(const struct andr_img_hdr *hdr, int verify,
 			     ulong *os_data, ulong *os_len);
+int android_image_get_dts(const struct andr_img_hdr *hdr,
+			  ulong *dts_data, ulong *dts_len);
 int android_image_get_ramdisk(const struct andr_img_hdr *hdr,
 			      ulong *rd_data, ulong *rd_len);
 ulong android_image_get_end(const struct andr_img_hdr *hdr);
-- 
2.8.4

-- 
| Michael Nazzareno Trimarchi                     Amarula Solutions BV |
| COO  -  Founder                                      Cruquiuskade 47 |
| +31(0)851119172                                 Amsterdam 1018 AM NL |
|                  [`as] http://www.amarulasolutions.com               |