[PATCHv6 02/26] arm: mach-k3: introduce new config option for sysfw split

Tero Kristo
2021-06-11T08:46:13Z

On J7 family of SoCs (J721E and J7200), sysfw is being split to be run
under two cores, TIFS portion on DMSC core, and DM firmware under MCU
R5. As MCU R5 is also used to run one phase of the bootloader, we must
prevent access from here towards sysfw services. To support this, add
new config option which can be used to detect presence of RM/PM sysfw
services.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tero Kristo <kristo@kernel.org>
---
arch/arm/mach-k3/Kconfig | 11 +++++++++++
1 file changed, 11 insertions(+)

diff --git a/arch/arm/mach-k3/Kconfig b/arch/arm/mach-k3/Kconfig
index 21b2fc2230..fa8d134b42 100644
--- a/arch/arm/mach-k3/Kconfig
+++ b/arch/arm/mach-k3/Kconfig
@@ -154,6 +154,17 @@ config K3_ATF_LOAD_ADDR
The load address for the ATF image. This value defaults to 0x70000000
if not provided in the board defconfig file.

+config K3_DM_FW
+ bool "Separate DM firmware image"
+ depends on SPL && CPU_V7R && SOC_K3_J721E && !CLK_TI_SCI && !TI_SCI_POWER_DOMAIN
+ default y
+ help
+ Enabling this will indicate that the system has separate DM
+ and TIFS firmware images in place, instead of a single SYSFW
+ firmware. Due to DM being executed on the same core as R5 SPL
+ bootloader, it makes RM and PM services not being available
+ during R5 SPL execution time.
+
source "board/ti/am65x/Kconfig"
source "board/ti/am64x/Kconfig"
source "board/ti/j721e/Kconfig"
--
2.17.1