| Tom Rini | 10e4779 | 2018-05-06 17:58:06 -0400 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0+ */ |
| Masahiro Yamada | 0ae5c5a | 2016-08-10 16:08:49 +0900 | [diff] [blame] | 2 | /* |
| 3 | * Copyright (C) 2016 Socionext Inc. |
| 4 | * Author: Masahiro Yamada <yamada.masahiro@socionext.com> |
| Masahiro Yamada | 0ae5c5a | 2016-08-10 16:08:49 +0900 | [diff] [blame] | 5 | */ |
| 6 | |
| 7 | #include <linux/linkage.h> |
| 8 | #include <asm/system.h> |
| 9 | |
| 10 | .section ._secure.text, "ax" |
| 11 | |
| 12 | ENTRY(uniphier_smp_trampoline) |
| 13 | ldr r0, 0f |
| 14 | mrc p15, 0, r1, c1, c0, 0 @ SCTLR (System Control Register) |
| 15 | orr r1, r1, #CR_I @ Enable ICache |
| 16 | bic r1, r1, #(CR_C | CR_M) @ Disable MMU and Dcache |
| 17 | mcr p15, 0, r1, c1, c0, 0 |
| 18 | |
| 19 | bx r0 |
| 20 | 0: .word uniphier_secondary_startup |
| 21 | .globl uniphier_smp_trampoline_end |
| 22 | uniphier_smp_trampoline_end: |
| 23 | ENDPROC(uniphier_smp_trampoline) |
| 24 | |
| 25 | LENTRY(uniphier_secondary_startup) |
| 26 | mrc p15, 0, r1, c0, c0, 5 @ MPIDR (Multiprocessor Affinity Reg) |
| 27 | and r1, r1, #0xff |
| 28 | |
| 29 | ldr r2, =uniphier_smp_booted |
| 30 | mov r0, #1 |
| 31 | str r0, [r2, r1, lsl #2] |
| 32 | |
| 33 | ldr r2, =uniphier_psci_holding_pen_release |
| 34 | pen: ldr r0, [r2] |
| 35 | cmp r0, r1 |
| 36 | beq psci_cpu_entry |
| 37 | wfe |
| 38 | b pen |
| 39 | ENDPROC(uniphier_secondary_startup) |