[PATCH v4 02/11] arm: mach-k3: Use FIT image data addr as fallback if 'load' prop is missing

[Beleswar Padhi]

It is possible for FIT Images to skip mentioning the pre-defined 'load'
address property. In those cases, SPL uses the actual address of the FIT
Image data as the fallback load address. Use this FIT data address for
referencing the image when the 'load' property is missing.

Signed-off-by: Beleswar Padhi <b-padhi at ti.com>
---
v4: Changelog:
1. None

Link to v3:
https://lore.kernel.org/all/20251231173621.1069988-3-b-padhi@ti.com/

v3: Changelog:
1. None

Link to v2:
https://lore.kernel.org/all/20250506104202.16741-6-b-padhi@ti.com/

v2: Changelog:
1. New patch. Fetch FDT Data addr for accessing image if 'load' prop is
not present in node.

 arch/arm/mach-k3/r5/common.c | 23 +++++++++++++++++++++--
 1 file changed, 21 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-k3/r5/common.c b/arch/arm/mach-k3/r5/common.c
index 484d96f9536..50c4231655e 100644
--- a/arch/arm/mach-k3/r5/common.c
+++ b/arch/arm/mach-k3/r5/common.c
@@ -328,12 +328,15 @@ void board_fit_image_post_process(const void *fit, int node, void **p_image,
 				  size_t *p_size)
 {
 	int len;
-	int i;
+	int i, ret;
 	const char *os;
-	u32 addr;
+	u32 addr, load_addr;
+	const void *fit_image_loadaddr;
+	size_t fit_image_size;
 
 	os = fdt_getprop(fit, node, "os", &len);
 	addr = fdt_getprop_u32_default_node(fit, node, 0, "entry", -1);
+	load_addr = fdt_getprop_u32_default_node(fit, node, 0, "load", -1);
 
 	debug("%s: processing image: addr=%x, size=%d, os=%s\n", __func__,
 	      addr, *p_size, os);
@@ -342,6 +345,22 @@ void board_fit_image_post_process(const void *fit, int node, void **p_image,
 		if (!strcmp(os, image_os_match[i])) {
 			fit_image_info[i].image_start = addr;
 			fit_image_info[i].image_len = *p_size;
+			/*
+			 * If the 'load' property is missing in the FIT image,
+			 * fall back to using the actual in-memory address of
+			 * the FIT image data.
+			 */
+			if (load_addr == -1) {
+				ret = fit_image_get_data(fit, node,
+							 &fit_image_loadaddr,
+							 &fit_image_size);
+				if (ret < 0)
+					panic("Error accessing node os = %s in FIT (%d)\n",
+					      os, ret);
+				fit_image_info[i].load = (ulong)fit_image_loadaddr;
+			} else {
+				fit_image_info[i].load = load_addr;
+			}
 			debug("%s: matched image for ID %d\n", __func__, i);
 			break;
 		}
-- 
2.34.1