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iot2050: Update firmware layout

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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@siemens.com>
This commit is contained in:
Jan Kiszka 2023-02-28 19:19:11 +01:00 committed by Tom Rini
parent ffbd5b29a4
commit 6ac9131702
5 changed files with 11 additions and 35 deletions
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30
arch/arm/dts/k3-am65-iot2050-boot-image.dtsi
View file

@ -25,15 +25,15 @@
missing-msg = "iot2050-seboot";
};
blob@0x080000 {
offset = <0x080000>;
blob@0x180000 {
offset = <0x180000>;
filename = "tispl.bin";
};
fit@0x280000 {
fit@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@0x6c0000 {
/* OTP update command block */
fill@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@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];
};
};
};

2
configs/iot2050_pg1_defconfig
View file

@ -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

2
configs/iot2050_pg2_defconfig
View file

@ -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

4
doc/board/siemens/iot2050.rst
View file

@ -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
--------

8
tools/binman/missing-blob-help
View file

@ -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