Adds start address and size config options for setting aside a portion of the EMIF memory space for usage by security software (like a secure OS/TEE). There are two sizes, a total size and a protected size. The region is divided into protected (secure) and unprotected (public) regions, that are contiguous and start at the start address given. If the start address is zero, the intention is that the region will be automatically placed at the end of the available external DRAM space.
Signed-off-by: Daniel Allred d-allred@ti.com --- arch/arm/cpu/armv7/omap5/Kconfig | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+)
diff --git a/arch/arm/cpu/armv7/omap5/Kconfig b/arch/arm/cpu/armv7/omap5/Kconfig index a8600b1..25474ed 100644 --- a/arch/arm/cpu/armv7/omap5/Kconfig +++ b/arch/arm/cpu/armv7/omap5/Kconfig @@ -24,6 +24,32 @@ endchoice config SYS_SOC default "omap5"
+config TI_SECURE_EMIF_REGION_START + hex "Reserved EMIF region start address" + depends on TI_SECURE_DEVICE + default 0x0 + help + Reserved EMIF region start address. Set to "0" to auto-select + to be at the end of the external memory region. + +config TI_SECURE_EMIF_TOTAL_REGION_SIZE + hex "Reserved EMIF region size" + depends on TI_SECURE_DEVICE + default 0x0 + help + Total reserved EMIF region size. Default is 0, which means no reserved EMIF + region on secure devices. + +config TI_SECURE_EMIF_PROTECTED_REGION_SIZE + hex "Size of protected region within reserved EMIF region" + depends on TI_SECURE_DEVICE + default 0x0 + help + This config option is used to specify the size of the portion of the total + reserved EMIF region set aside for secure OS needs that will be protected + using hardware memory firewalls. This value must be smaller than the + TI_SECURE_EMIF_TOTAL_REGION_SIZE value. + source "board/compulab/cm_t54/Kconfig" source "board/ti/omap5_uevm/Kconfig" source "board/ti/dra7xx/Kconfig"