bsp: tegra: systemd-boot: double dtb buffer size

meta-lmp-bsp/dynamic-layers/tegra/recipes-core/systemd/systemd-boot/0001-Increase-the-dtb-size.patch

@@ -0,0 +1,60 @@
+From 919601f2598eb3dd17fe88d26cafed88420daad2 Mon Sep 17 00:00:00 2001
+From: Brian McGillion <[email protected]>
+Date: Thu, 23 Jan 2025 13:08:15 +0400
+Subject: [PATCH] Increase the dtb size
+
+This is probably due to fact systemd-boot does not allocate any extra space for the device tree.
+Without the modification, because there is not any extra space, the UEFI will fail applying the
+overlay changes from its .dtbo files
+
+Fixes:
+| EFI stub: ERROR: Invalid header detected on UEFI supplied FDT, ignoring ...
+| EFI stub: Generating empty DTB
+
+References:
+https://github.com/anduril/jetpack-nixos/issues/111
+
+Upstream-Status: Pending [https://github.com/tiiuae/ghaf/blob/main/modules/common/systemd/systemd-boot-double-dtb-buffer-size.patch]
+
+Signed-off-by: Brian McGillion <[email protected]>
+Signed-off-by: Jose Quaresma <[email protected]>
+---
+ src/boot/efi/devicetree.c | 8 +++++++-
+ 1 file changed, 7 insertions(+), 1 deletion(-)
+
+diff --git a/src/boot/efi/devicetree.c b/src/boot/efi/devicetree.c
+index 61a43cd77d..f939a79963 100644
+--- a/src/boot/efi/devicetree.c
++++ b/src/boot/efi/devicetree.c
+@@ -3,6 +3,7 @@
+ #include "devicetree.h"
+ #include "proto/dt-fixup.h"
+ #include "util.h"
++#include <endian.h>
+
+ #define FDT_V1_SIZE (7*4)
+
+@@ -88,7 +89,8 @@ EFI_STATUS devicetree_install(struct devicetree_state *state, EFI_FILE *root_dir
+                 /* 32MB device tree blob doesn't seem right */
+                 return EFI_INVALID_PARAMETER;
+
+-        len = info->FileSize;
++        /* Double the length to be allocated so there's space for modifications */
++        len = info->FileSize * 4;
+
+         err = devicetree_allocate(state, len);
+         if (err != EFI_SUCCESS)
+@@ -102,6 +104,10 @@ EFI_STATUS devicetree_install(struct devicetree_state *state, EFI_FILE *root_dir
+         if (err != EFI_SUCCESS)
+                 return err;
+
++        /* Double the size inside the device tree structure */
++        uint32_t *totalsize = (uint32_t *)(((char *)PHYSICAL_ADDRESS_TO_POINTER(state->addr) + 4));
++        (*totalsize) = htobe32(be32toh(*totalsize) * 4);
++
+         return BS->InstallConfigurationTable(
+                         MAKE_GUID_PTR(EFI_DTB_TABLE), PHYSICAL_ADDRESS_TO_POINTER(state->addr));
+ }
+-- 
+2.48.1
+

meta-lmp-bsp/dynamic-layers/tegra/recipes-core/systemd/systemd-boot_%.bbappend

@@ -0,0 +1,3 @@
+FILESEXTRAPATHS:prepend := "${THISDIR}/${PN}:"
+
+SRC_URI:append:orin-nano = " file://0001-Increase-the-dtb-size.patch"