mirror of
https://github.com/ARM-software/arm-trusted-firmware.git
synced 2025-04-26 14:55:16 +00:00
33d4af47b0
This patch introduce TF-A support for NXP's ls1043a platform. more details information of ls1043a chip and ls1043ardb board can be found at docs/plat/ls1043a.rst. Boot sequence on ls1043a is: bootrom loads bl1 firstly, then bl1 loads bl2, bl2 will load bl31, bl32 and bl33, bl31 will boot bl32(tee os) and bl33(u-boot or uefi), bl33 boot Linux kernel. Now TF-A on ls1043ardb platform has the following features in this patch: * Support boot from Nor flash. * TF-A can boot bl33 which runs in el2 of non-secure world. * TF-A boot OPTee OS. * Support PSCI Signed-off-by: Jiafei Pan <Jiafei.Pan@nxp.com> Signed-off-by: Chenyin.Ha <Chenyin.Ha@nxp.com> Signed-off-by: Chenhui Zhao <chenhui.zhao@nxp.com> Signed-off-by: jiaheng.fan <jiaheng.fan@nxp.com> Signed-off-by: Wen He <wen.he_1@nxp.com>
39 lines
1.1 KiB
C
39 lines
1.1 KiB
C
/*
|
|
* Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*/
|
|
|
|
#include "plat_ls.h"
|
|
|
|
/*******************************************************************************
|
|
* This function validates an MPIDR by checking whether it falls within the
|
|
* acceptable bounds. An error code (-1) is returned if an incorrect mpidr
|
|
* is passed.
|
|
******************************************************************************/
|
|
int ls_check_mpidr(u_register_t mpidr)
|
|
{
|
|
unsigned int cluster_id, cpu_id;
|
|
uint64_t valid_mask;
|
|
|
|
valid_mask = ~(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK);
|
|
cluster_id = (mpidr >> MPIDR_AFF1_SHIFT) & MPIDR_AFFLVL_MASK;
|
|
cpu_id = (mpidr >> MPIDR_AFF0_SHIFT) & MPIDR_AFFLVL_MASK;
|
|
|
|
mpidr &= MPIDR_AFFINITY_MASK;
|
|
if (mpidr & valid_mask)
|
|
return -1;
|
|
|
|
if (cluster_id >= PLAT_LS_CLUSTER_COUNT)
|
|
return -1;
|
|
|
|
/*
|
|
* Validate cpu_id by checking whether it represents a CPU in
|
|
* one of the two clusters present on the platform.
|
|
*/
|
|
if (cpu_id >= plat_ls_get_cluster_core_count(mpidr))
|
|
return -1;
|
|
|
|
|
|
return 0;
|
|
}
|