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u-boot/doc/README.fsl-trustzone-components
Prabhakar Kushwaha 449372148f armv8: LS2080A: Rename LS2085A to reflect LS2080A
LS2080A is a prime personality of Freescale’s LS2085A. It is a non-AIOP
personality without support of DP-DDR, L2 switch, 1588, PCIe endpoint etc.
So renaming existing LS2085A code base to reflect LS2080A (Prime personality)

Signed-off-by: Pratiyush Mohan Srivastava <pratiyush.srivastava@freescale.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
[York Sun: Dropped #ifdef in cpu.c for cpu_type_list]
Reviewed-by: York Sun <yorksun@freescale.com>
2015-11-30 08:53:04 -08:00

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Freescale ARM64 SoCs like LS2080A have ARM TrustZone components like
TZPC-BP147 (TrustZone Protection Controller) and TZASC-400 (TrustZone
Address Space Controller).
While most of the configuration related programming of these peripherals
is left to a root-of-trust security software layer (running in EL3
privilege mode), but still some configurations of these peripherals
might be required while the bootloader is executing in EL3 privilege
mode. The following sections define how to turn on these features for
LS2080A like SoCs.
TZPC-BP147 (TrustZone Protection Controller)
============================================
- Depends on CONFIG_FSL_TZPC_BP147 configuration flag.
- Separates Secure World and Normal World on-chip RAM (OCRAM) spaces.
- Provides a programming model to set access control policy via the TZPC
TZDECPROT Registers.
TZASC-400 (TrustZone Address Space Controller)
==============================================
- Depends on CONFIG_FSL_TZASC_400 configuration flag.
- Separates Secure World and Normal World external memory spaces for bus masters
such as processors and DMA-equipped peripherals.
- Supports 8 fully programmable address regions, initially inactive at reset,
and one base region, always active, that covers the remaining address space.