mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-10 21:26:19 +09:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
76 lines
1.4 KiB
ArmAsm
76 lines
1.4 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright 2016 NXP Semiconductor, Inc.
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*/
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#include <config.h>
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#include <linux/linkage.h>
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#include <asm/system.h>
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#include <asm/macro.h>
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WEAK(_sec_firmware_entry)
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/*
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* x0: Secure Firmware entry point
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* x1: Exception return address Low
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* x2: Exception return address High
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*/
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/* Save stack pointer for EL2 */
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mov x3, sp
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msr sp_el2, x3
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/* Set exception return address hold pointer */
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adr x4, 1f
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mov x3, x4
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#ifdef CONFIG_ARMV8_SEC_FIRMWARE_ERET_ADDR_REVERT
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rev w3, w3
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#endif
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str w3, [x1]
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lsr x3, x4, #32
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#ifdef CONFIG_ARMV8_SEC_FIRMWARE_ERET_ADDR_REVERT
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rev w3, w3
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#endif
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str w3, [x2]
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/* Call SEC monitor */
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br x0
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1:
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mov x0, #0
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ret
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ENDPROC(_sec_firmware_entry)
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#ifdef CONFIG_SEC_FIRMWARE_ARMV8_PSCI
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ENTRY(_sec_firmware_support_psci_version)
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mov x0, 0x84000000
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mov x1, 0x0
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mov x2, 0x0
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mov x3, 0x0
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smc #0
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ret
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ENDPROC(_sec_firmware_support_psci_version)
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/*
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* Switch from AArch64 EL2 to AArch32 EL2
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* @param inputs:
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* x0: argument, zero
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* x1: machine nr
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* x2: fdt address
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* x3: input argument
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* x4: kernel entry point
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* @param outputs for secure firmware:
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* x0: function id
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* x1: kernel entry point
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* x2: machine nr
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* x3: fdt address
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*/
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ENTRY(armv8_el2_to_aarch32)
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mov x3, x2
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mov x2, x1
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mov x1, x4
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ldr x0, =0xc000ff04
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smc #0
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ret
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ENDPROC(armv8_el2_to_aarch32)
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#endif
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