diff options
| author |   Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
|---|---|---|
| committer | Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
| commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
| tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/u-boot/arch/arm/mach-uniphier/arm32/psci_smp.S | |
| parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) | |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/u-boot/arch/arm/mach-uniphier/arm32/psci_smp.S')
| -rw-r--r-- | roms/u-boot/arch/arm/mach-uniphier/arm32/psci_smp.S | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/roms/u-boot/arch/arm/mach-uniphier/arm32/psci_smp.S b/roms/u-boot/arch/arm/mach-uniphier/arm32/psci_smp.S new file mode 100644 index 000000000..65a06ae23 --- /dev/null +++ b/roms/u-boot/arch/arm/mach-uniphier/arm32/psci_smp.S @@ -0,0 +1,39 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (C) 2016 Socionext Inc. + * Author: Masahiro Yamada <yamada.masahiro@socionext.com> + */ + +#include <linux/linkage.h> +#include <asm/system.h> + + .section ._secure.text, "ax" + +ENTRY(uniphier_smp_trampoline) + ldr r0, 0f + mrc p15, 0, r1, c1, c0, 0 @ SCTLR (System Control Register) + orr r1, r1, #CR_I @ Enable ICache + bic r1, r1, #(CR_C | CR_M) @ Disable MMU and Dcache + mcr p15, 0, r1, c1, c0, 0 + + bx r0 +0: .word uniphier_secondary_startup + .globl uniphier_smp_trampoline_end +uniphier_smp_trampoline_end: +ENDPROC(uniphier_smp_trampoline) + +LENTRY(uniphier_secondary_startup) + mrc p15, 0, r1, c0, c0, 5 @ MPIDR (Multiprocessor Affinity Reg) + and r1, r1, #0xff + + ldr r2, =uniphier_smp_booted + mov r0, #1 + str r0, [r2, r1, lsl #2] + + ldr r2, =uniphier_psci_holding_pen_release +pen: ldr r0, [r2] + cmp r0, r1 + beq psci_cpu_entry + wfe + b pen +ENDPROC(uniphier_secondary_startup) |