[PATCH V7 03/15] iot2050: Update firmware layout

[Jan Kiszka]

From: Jan Kiszka <jan.kiszka at siemens.com>

The latest version of the binary-only firmware parts come in a combined
form of FSBL and sysfw containers. This implies some layout changes to
the generated firmware image but also makes handling of artifacts much
simpler (4 files less). The env locations will not change, just the
space reserved for U-Boot will shrink from 4 to 3 MB - still plenty of
space left in practice.

Adjust configuration and documentation accordingly.

Along this change, add a new reservation for update commands of the
user-controlled OTP part. A specific userspace tool will fill it, and
the FSBL will evaluate it during boot. This reservation will use 64K of
the former sysfw section.

Signed-off-by: Jan Kiszka <jan.kiszka at siemens.com>
---
 arch/arm/dts/k3-am65-iot2050-boot-image.dtsi | 30 ++++++--------------
 configs/iot2050_pg1_defconfig                |  2 +-
 configs/iot2050_pg2_defconfig                |  2 +-
 doc/board/siemens/iot2050.rst                |  4 ---
 tools/binman/missing-blob-help               |  8 +-----
 5 files changed, 11 insertions(+), 35 deletions(-)

diff --git a/arch/arm/dts/k3-am65-iot2050-boot-image.dtsi b/arch/arm/dts/k3-am65-iot2050-boot-image.dtsi
index 46669576864..3ee0842e993 100644
--- a/arch/arm/dts/k3-am65-iot2050-boot-image.dtsi
+++ b/arch/arm/dts/k3-am65-iot2050-boot-image.dtsi
@@ -25,15 +25,15 @@
 			missing-msg = "iot2050-seboot";
 		};
 
-		blob at 0x080000 {
-			offset = <0x080000>;
+		blob at 0x180000 {
+			offset = <0x180000>;
 			filename = "tispl.bin";
 		};
 
-		fit at 0x280000 {
+		fit at 0x380000 {
 			description = "U-Boot for IOT2050";
 			fit,fdt-list = "of-list";
-			offset = <0x280000>;
+			offset = <0x380000>;
 			images {
 				u-boot {
 					description = "U-Boot";
@@ -94,25 +94,11 @@
 			fill-byte = [00];
 		};
 
-		/* sysfw, basic variant */
-		blob-ext at 0x6c0000 {
+		/* OTP update command block */
+		fill at 0x6c0000 {
 			offset = <0x6c0000>;
-#ifdef CONFIG_TARGET_IOT2050_A53_PG1
-			filename = "sysfw_sr1.itb";
-#else
-			filename = "sysfw_sr2.itb";
-#endif
-			missing-msg = "iot2050-sysfw";
-		};
-		/* sysfw, advanced variant */
-		blob-ext at 0x740000 {
-			offset = <0x740000>;
-#ifdef CONFIG_TARGET_IOT2050_A53_PG1
-			filename = "sysfw_sr1.itb_HS";
-#else
-			filename = "sysfw_sr2.itb_HS";
-#endif
-			missing-msg = "iot2050-sysfw";
+			size   = <0x010000>;
+			fill-byte = [ff];
 		};
 	};
 };
diff --git a/configs/iot2050_pg1_defconfig b/configs/iot2050_pg1_defconfig
index a13fd9ff68d..2f7a9d86794 100644
--- a/configs/iot2050_pg1_defconfig
+++ b/configs/iot2050_pg1_defconfig
@@ -52,7 +52,7 @@ CONFIG_SPL_POWER_DOMAIN=y
 # CONFIG_SPL_SPI_FLASH_TINY is not set
 CONFIG_SPL_SPI_FLASH_SFDP_SUPPORT=y
 CONFIG_SPL_SPI_LOAD=y
-CONFIG_SYS_SPI_U_BOOT_OFFS=0x280000
+CONFIG_SYS_SPI_U_BOOT_OFFS=0x380000
 CONFIG_SYS_MAXARGS=64
 CONFIG_SYS_PBSIZE=1050
 CONFIG_CMD_ASKENV=y
diff --git a/configs/iot2050_pg2_defconfig b/configs/iot2050_pg2_defconfig
index 65400b4696a..e3f82ad3065 100644
--- a/configs/iot2050_pg2_defconfig
+++ b/configs/iot2050_pg2_defconfig
@@ -54,7 +54,7 @@ CONFIG_SPL_POWER_DOMAIN=y
 # CONFIG_SPL_SPI_FLASH_TINY is not set
 CONFIG_SPL_SPI_FLASH_SFDP_SUPPORT=y
 CONFIG_SPL_SPI_LOAD=y
-CONFIG_SYS_SPI_U_BOOT_OFFS=0x280000
+CONFIG_SYS_SPI_U_BOOT_OFFS=0x380000
 CONFIG_SYS_MAXARGS=64
 CONFIG_SYS_PBSIZE=1050
 CONFIG_CMD_ASKENV=y
diff --git a/doc/board/siemens/iot2050.rst b/doc/board/siemens/iot2050.rst
index fd3431fa3f8..26972e20ae9 100644
--- a/doc/board/siemens/iot2050.rst
+++ b/doc/board/siemens/iot2050.rst
@@ -25,11 +25,7 @@ https://github.com/siemens/meta-iot2050/tree/master/recipes-bsp/u-boot/files/pre
 The following binaries from that source need to be present in the build folder:
 
  - seboot_pg1.bin
- - sysfw_sr1.itb
- - sysfw_sr1.itb_HS
  - seboot_pg2.bin
- - sysfw_sr2.itb
- - sysfw_sr2.itb_HS
 
 Building
 --------
diff --git a/tools/binman/missing-blob-help b/tools/binman/missing-blob-help
index 4448ac93112..1a30da7b5aa 100644
--- a/tools/binman/missing-blob-help
+++ b/tools/binman/missing-blob-help
@@ -21,13 +21,7 @@ Please read the section on SCP firmware in board/sunxi/README.sunxi64
 iot2050-seboot:
 See the documentation for IOT2050 board. Your image is missing SEBoot
 which is mandatory for board startup. Prebuilt SEBoot located at
-meta-iot2050/tree/master/recipes-bsp/u-boot/files/prebuild/tiboot3.bin.
-
-iot2050-sysfw:
-See the documentation for IOT2050 board. Your image is missing system
-firmware which is mandatory for board startup. Prebuilt system firmware
-located at meta-iot2050/tree/master/recipes-bsp/u-boot/files/prebuild/
-with sysfw prefix.
+meta-iot2050/tree/master/recipes-bsp/u-boot/files/prebuild/seboot_pg*.bin.
 
 k3-rti-wdt-firmware:
 If CONFIG_WDT_K3_RTI_LOAD_FW is enabled, a firmware image is needed for
-- 
2.35.3