In non-combined boot flow for K3, all the firewalls are locked by default until sysfw comes up. Rom configures some of the firewall for its usage along with the SRAM for R5 but the PSRAM region is still locked.
The K3 MCU Scratchpad for j721e was set to a PSRAM region triggering the firewall exception before sysfw came up. The exception started happening after adding multi dtb support that accesses the scratchpad for reading EEPROM contents.
The commit changes R5 MCU scratchpad for j721e to an SRAM region.
Old Map: ┌─────────────────────────────────────┐ 0x41c00000 │ SPL │ ├─────────────────────────────────────┤ 0x41c40000 (approx) │ STACK │ ├─────────────────────────────────────┤ 0x41c85b20 │ Global data │ │ sizeof(struct global_data) = 0xd8 │ ├─────────────────────────────────────┤ gd->malloc_base = 0x41c85bfc │ HEAP │ │ CONFIG_SYS_MALLOC_F_LEN = 0x70000 │ ├─────────────────────────────────────┤ CONFIG_SPL_BSS_START_ADDR │ SPL BSS │ (0x41cf5bfc) │ CONFIG_SPL_BSS_MAX_SIZE = 0xA000 │ └─────────────────────────────────────┘ CONFIG_SYS_K3_BOOT_PARAM_TABLE_INDEX (0x41cffbfc)
New Map: ┌─────────────────────────────────────┐ 0x41c00000 │ SPL │ ├─────────────────────────────────────┤ 0x41c40000 (approx) │ EMPTY │ ├─────────────────────────────────────┤ 0x41c81920 │ STACK │ │ SPL_SIZE_LIMIT_PROVIDE_STACK=0x4000 │ ├─────────────────────────────────────┤ 0x41c85920 │ Global data │ │ sizeof(struct global_data) = 0xd8 │ ├─────────────────────────────────────┤ gd->malloc_base = 0x41c859f0 │ HEAP │ │ CONFIG_SYS_MALLOC_F_LEN = 0x70000 │ ├─────────────────────────────────────┤ CONFIG_SPL_BSS_START_ADDR │ SPL BSS │ (0x41cf59f0) │ CONFIG_SPL_BSS_MAX_SIZE = 0xA000 │ ├─────────────────────────────────────┤ 0x41cff9fc │ NEW MCU SCRATCHPAD │ │ SYS_K3_MCU_SCRATCHPAD_SIZE = 0x200 │ └─────────────────────────────────────┘ CONFIG_SYS_K3_BOOT_PARAM_TABLE_INDEX (0x41cffbfc)
Fixes: ab977c8b91b4 ("configs: j721s2_evm_r5: Enable support for building multiple dtbs into FIT")
Signed-off-by: Manorit Chawdhry m-chawdhry@ti.com [n-francis@ti.com: SRAM allocation addressing diagram] Signed-off-by: Neha Francis n-francis@ti.com --- arch/arm/mach-k3/Kconfig | 3 ++- configs/j721e_evm_r5_defconfig | 10 +++++++--- 2 files changed, 9 insertions(+), 4 deletions(-)
diff --git a/arch/arm/mach-k3/Kconfig b/arch/arm/mach-k3/Kconfig index a8c3a593d570..0991b42423a0 100644 --- a/arch/arm/mach-k3/Kconfig +++ b/arch/arm/mach-k3/Kconfig @@ -52,7 +52,8 @@ config SYS_K3_MAX_DOWNLODABLE_IMAGE_SIZE config SYS_K3_MCU_SCRATCHPAD_BASE hex default 0x40280000 if SOC_K3_AM654 - default 0x40280000 if SOC_K3_J721E || SOC_K3_J721S2 + default 0x40280000 if SOC_K3_J721S2 + default 0x41cff9fc if SOC_K3_J721E help Describes the base address of MCU Scratchpad RAM.
diff --git a/configs/j721e_evm_r5_defconfig b/configs/j721e_evm_r5_defconfig index 9d333e490562..658f2bc1bc8b 100644 --- a/configs/j721e_evm_r5_defconfig +++ b/configs/j721e_evm_r5_defconfig @@ -17,12 +17,16 @@ CONFIG_SPL_MMC=y CONFIG_SPL_SERIAL=y CONFIG_SPL_DRIVERS_MISC=y CONFIG_SPL_STACK_R_ADDR=0x82000000 +CONFIG_SPL_SIZE_LIMIT=0xf59f0 +CONFIG_SPL_SIZE_LIMIT_SUBTRACT_GD=y +CONFIG_SPL_SIZE_LIMIT_SUBTRACT_MALLOC=y +CONFIG_SPL_SIZE_LIMIT_PROVIDE_STACK=0x4000 CONFIG_SPL_FS_FAT=y CONFIG_SPL_LIBDISK_SUPPORT=y CONFIG_SPL_SPI_FLASH_SUPPORT=y CONFIG_SPL_SPI=y CONFIG_HAS_CUSTOM_SYS_INIT_SP_ADDR=y -CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0x41cf5bfc +CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0x41cf59f0 # CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set CONFIG_SPL_LOAD_FIT=y CONFIG_SPL_LOAD_FIT_ADDRESS=0x80080000 @@ -31,9 +35,9 @@ CONFIG_SPL_FIT_IMAGE_POST_PROCESS=y CONFIG_OF_BOARD_SETUP=y CONFIG_USE_BOOTCOMMAND=y # CONFIG_DISPLAY_CPUINFO is not set -CONFIG_SPL_MAX_SIZE=0xc0000 +CONFIG_SPL_MAX_SIZE=0xf59f0 CONFIG_SPL_HAS_BSS_LINKER_SECTION=y -CONFIG_SPL_BSS_START_ADDR=0x41cf5bfc +CONFIG_SPL_BSS_START_ADDR=0x41cf59f0 CONFIG_SPL_BSS_MAX_SIZE=0xa000 CONFIG_SPL_BOARD_INIT=y CONFIG_SPL_STACK_R=y