ARMv8: Add secure sections for PSCI text and data

This patch adds secure_text, secure_data and secure_stack sections for ARMv8 to
hold PSCI text and data, and it is based on the legacy implementation of ARMv7.

ARMV8_SECURE_BASE defines the address for PSCI secure sections, ARMV8_PSCI and
ARMV8_PSCI_NR_CPUS are firstly used in this patch, so they are introduce here
in Kconfig too.

Signed-off-by: Hongbo Zhang <hongbo.zhang@nxp.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: York Sun <york.sun@nxp.com>

1 files changed, 31 insertions, 0 deletions

diff --git a/arch/arm/cpu/armv8/Kconfig b/arch/arm/cpu/armv8/Kconfig
index 965a8d1..edae43d 100644
--- a/arch/arm/cpu/armv8/Kconfig
+++ b/arch/arm/cpu/armv8/Kconfig
@@ -40,4 +40,35 @@ config PSCI_RESET
 
 	  Select Y here to make use of PSCI calls for system reset
 
+config ARMV8_PSCI
+	bool "Enable PSCI support" if EXPERT
+	default n
+	help
+	  PSCI is Power State Coordination Interface defined by ARM.
+	  The PSCI in U-boot provides a general framework and each platform
+	  can implement their own specific PSCI functions.
+	  Say Y here to enable PSCI support on ARMv8 platform.
+
+config ARMV8_PSCI_NR_CPUS
+	int "Maximum supported CPUs for PSCI"
+	depends on ARMV8_PSCI
+	default 4
+	help
+	  The maximum number of CPUs supported in the PSCI firmware.
+	  It is no problem to set a larger value than the number of CPUs in
+	  the actual hardware implementation.
+
+if SYS_HAS_ARMV8_SECURE_BASE
+
+config ARMV8_SECURE_BASE
+	hex "Secure address for PSCI image"
+	depends on ARMV8_PSCI
+	help
+	  Address for placing the PSCI text, data and stack sections.
+	  If not defined, the PSCI sections are placed together with the u-boot
+	  but platform can choose to place PSCI code image separately in other
+	  places such as some secure RAM built-in SOC etc.
+
+endif
+
 endif