mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-02 09:30:10 +00:00
daa926448c
Moved the config FSL_PPA_ARMV8_PSCI from fsl-layerscape's Kconfig to Kconfig under armv8 and renamed it to SEC_FIRMWARE_ARMV8_PSCI. Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Reviewed-by: York Sun <york.sun@nxp.com>
76 lines
1.4 KiB
ArmAsm
76 lines
1.4 KiB
ArmAsm
/*
|
|
* Copyright 2016 NXP Semiconductor, Inc.
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <config.h>
|
|
#include <linux/linkage.h>
|
|
#include <asm/system.h>
|
|
#include <asm/macro.h>
|
|
|
|
WEAK(_sec_firmware_entry)
|
|
/*
|
|
* x0: Secure Firmware entry point
|
|
* x1: Exception return address Low
|
|
* x2: Exception return address High
|
|
*/
|
|
|
|
/* Save stack pointer for EL2 */
|
|
mov x3, sp
|
|
msr sp_el2, x3
|
|
|
|
/* Set exception return address hold pointer */
|
|
adr x4, 1f
|
|
mov x3, x4
|
|
#ifdef CONFIG_ARMV8_SEC_FIRMWARE_ERET_ADDR_REVERT
|
|
rev w3, w3
|
|
#endif
|
|
str w3, [x1]
|
|
lsr x3, x4, #32
|
|
#ifdef CONFIG_ARMV8_SEC_FIRMWARE_ERET_ADDR_REVERT
|
|
rev w3, w3
|
|
#endif
|
|
str w3, [x2]
|
|
|
|
/* Call SEC monitor */
|
|
br x0
|
|
|
|
1:
|
|
mov x0, #0
|
|
ret
|
|
ENDPROC(_sec_firmware_entry)
|
|
|
|
#ifdef CONFIG_SEC_FIRMWARE_ARMV8_PSCI
|
|
ENTRY(_sec_firmware_support_psci_version)
|
|
mov x0, 0x84000000
|
|
mov x1, 0x0
|
|
mov x2, 0x0
|
|
mov x3, 0x0
|
|
smc #0
|
|
ret
|
|
ENDPROC(_sec_firmware_support_psci_version)
|
|
|
|
/*
|
|
* Switch from AArch64 EL2 to AArch32 EL2
|
|
* @param inputs:
|
|
* x0: argument, zero
|
|
* x1: machine nr
|
|
* x2: fdt address
|
|
* x3: input argument
|
|
* x4: kernel entry point
|
|
* @param outputs for secure firmware:
|
|
* x0: function id
|
|
* x1: kernel entry point
|
|
* x2: machine nr
|
|
* x3: fdt address
|
|
*/
|
|
ENTRY(armv8_el2_to_aarch32)
|
|
mov x3, x2
|
|
mov x2, x1
|
|
mov x1, x4
|
|
ldr x0, =0xc000ff04
|
|
smc #0
|
|
ret
|
|
ENDPROC(armv8_el2_to_aarch32)
|
|
#endif
|