[U-Boot] [PATCH v3 1/2] common: image: update boot_get_fpga to support arbitrary fpga image

[Dalon Westergreen]

The implementation of boot_get_fpga only supported one fpga family.
This modification allows for any of the fpga devices supported by
fpga_load to be used.

Signed-off-by: Dalon Westergreen <dwesterg at gmail.com>

--
Changes in v3:
 - Fix typos/caps in comments
Changes in v2:
 - Add fitimage support for fpga-devnum and fpga-partial-image
 - Use above in boot_get_fpga
 - for xilinx fpgas double check using image size to determine
   if image is a partial image
---
 common/image-fit.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
 common/image.c     | 51 ++++++++++++++++++++++++++++++++-------------------
 include/image.h    |  5 +++++
 3 files changed, 88 insertions(+), 19 deletions(-)

diff --git a/common/image-fit.c b/common/image-fit.c
index 109ecfa..eb0c633 100644
--- a/common/image-fit.c
+++ b/common/image-fit.c
@@ -916,6 +916,57 @@ ulong fit_get_end(const void *fit)
 }
 
 /**
+ * fit_image_fpga_get_devnum - get fpga devnum
+ * @fit: pointer to the FIT format image header
+ * @noffset: fpga node offset
+ * @devnum: pointer to an int, will hold fpga devnum
+ *
+ * fit_image_fpga_get_devnum() finds the fpga devnum for which the fpga data is
+ * intended.  If the property is not found, we default to 0.
+ *
+ * returns:
+ *     0, on devnum not found
+ *     value, on devnum found
+ */
+int fit_image_fpga_get_devnum(const void *fit, int noffset, int *devnum)
+{
+	int len;
+	int *value;
+
+	value = (int *)fdt_getprop(fit, noffset, FIT_FPGA_DEVNUM_PROP, &len);
+	if (value == NULL || len != sizeof(int))
+		*devnum = 0;
+	else
+		*devnum = *value;
+
+	return 0;
+}
+
+/**
+ * fit_image_fpga_is_partial - is partial fpga
+ * @fit: pointer to the FIT format image header
+ * @noffset: fpga node offset
+ *
+ * fit_image_fpga_is_partial() checks if the fpga node sets the property
+ * indicating the data represents a partial fpga image.
+ *
+ * returns:
+ *     0, on devnum not found
+ *     value, on devnum found
+ */
+int fit_image_fpga_is_partial(const void *fit, int noffset)
+{
+	int len;
+	int *value;
+
+	value = (int *)fdt_getprop(fit, noffset, FIT_FPGA_PARTIAL_PROP, &len);
+	if ((value == NULL || len != sizeof(int)) || (value == 0))
+		return 0;
+	else
+		return 1;
+}
+
+/**
  * fit_set_timestamp - set node timestamp property
  * @fit: pointer to the FIT format image header
  * @noffset: node offset
diff --git a/common/image.c b/common/image.c
index 0f88984..6480b0a 100644
--- a/common/image.c
+++ b/common/image.c
@@ -1306,7 +1306,7 @@ int boot_get_setup(bootm_headers_t *images, uint8_t arch,
 }
 
 #if IMAGE_ENABLE_FIT
-#if defined(CONFIG_FPGA) && defined(CONFIG_FPGA_XILINX)
+#if defined(CONFIG_FPGA)
 int boot_get_fpga(int argc, char * const argv[], bootm_headers_t *images,
 		  uint8_t arch, const ulong *ld_start, ulong * const ld_len)
 {
@@ -1316,9 +1316,10 @@ int boot_get_fpga(int argc, char * const argv[], bootm_headers_t *images,
 	int fit_img_result;
 	const char *uname, *name;
 	int err;
-	int devnum = 0; /* TODO support multi fpga platforms */
-	const fpga_desc * const desc = fpga_get_desc(devnum);
-	xilinx_desc *desc_xilinx = desc->devdesc;
+	int devnum;
+	const fpga_desc *desc;
+	xilinx_desc *desc_xilinx;
+	bitstream_type bstype = BIT_FULL;
 
 	/* Check to see if the images struct has a FIT configuration */
 	if (!genimg_has_config(images)) {
@@ -1365,26 +1366,38 @@ int boot_get_fpga(int argc, char * const argv[], bootm_headers_t *images,
 			return fit_img_result;
 		}
 
-		if (img_len >= desc_xilinx->size) {
-			name = "full";
-			err = fpga_loadbitstream(devnum, (char *)img_data,
-						 img_len, BIT_FULL);
-			if (err)
-				err = fpga_load(devnum, (const void *)img_data,
-						img_len, BIT_FULL);
-		} else {
-			name = "partial";
-			err = fpga_loadbitstream(devnum, (char *)img_data,
-						 img_len, BIT_PARTIAL);
-			if (err)
-				err = fpga_load(devnum, (const void *)img_data,
-						img_len, BIT_PARTIAL);
+		/* Get FPGA device number, defaults to 0 */
+		fit_image_fpga_get_devnum(buf, conf_noffset, &devnum);
+
+		/* Check bitstream type */
+		if (fit_image_fpga_is_partial(buf, conf_noffset))
+			bstype = BIT_PARTIAL;
+
+		/* Legacy support detecting partial config files for Xilinx */
+		desc = fpga_get_desc(devnum);
+		if (desc->devtype == fpga_xilinx) {
+			desc_xilinx = desc->devdesc;
+			if (img_len < desc_xilinx->size)
+				bstype = BIT_PARTIAL;
 		}
 
+		/* Try bitstream format first */
+		err = fpga_loadbitstream(devnum, (char *)img_data,
+					 img_len, bstype);
+		if (err)
+			err = fpga_load(devnum, (const void *)img_data,
+					img_len, bstype);
+
 		if (err)
 			return err;
 
-		printf("   Programming %s bitstream... OK\n", name);
+		if (bstype == BIT_PARTIAL)
+			name = "partial";
+		else
+			name = "full";
+
+		printf("   Programming %s bitstream into fpga %d... OK\n",
+		       name, devnum);
 		break;
 	default:
 		printf("The given image format is not supported (corrupt?)\n");
diff --git a/include/image.h b/include/image.h
index 1e686b7..75d2afc 100644
--- a/include/image.h
+++ b/include/image.h
@@ -876,6 +876,8 @@ int bootz_setup(ulong image, ulong *start, ulong *end);
 #define FIT_COMP_PROP		"compression"
 #define FIT_ENTRY_PROP		"entry"
 #define FIT_LOAD_PROP		"load"
+#define FIT_FPGA_DEVNUM_PROP	"fpga-devnum"
+#define FIT_FPGA_PARTIAL_PROP	"fpga-partial-image"
 
 /* configuration node */
 #define FIT_KERNEL_PROP		"kernel"
@@ -955,6 +957,9 @@ int fit_image_hash_get_value(const void *fit, int noffset, uint8_t **value,
 
 int fit_set_timestamp(void *fit, int noffset, time_t timestamp);
 
+int fit_image_fpga_get_devnum(const void *fit, int noffset, int *devnum);
+int fit_image_fpga_is_partial(const void *fit, int noffset);
+
 /**
  * fit_add_verification_data() - add verification data to FIT image nodes
  *
-- 
2.7.4