forked from Minki/linux
3aae97c8b1
The setup_max_cpus variable is only defined if CONFIG_SMP is set. Add
a preprocessor condition to avoid the following compilation error if
CONFIG_SMP is not set:
arch/arm/include/asm/trusted_foundations.h: In function 'register_trusted_foundations':
arch/arm/include/asm/trusted_foundations.h:57:2: error: 'setup_max_cpus' undeclared (first use in this function)
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Reported-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
75 lines
2.3 KiB
C
75 lines
2.3 KiB
C
/*
|
|
* Copyright (c) 2013, NVIDIA Corporation.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*/
|
|
|
|
/*
|
|
* Support for the Trusted Foundations secure monitor.
|
|
*
|
|
* Trusted Foundation comes active on some ARM consumer devices (most
|
|
* Tegra-based devices sold on the market are concerned). Such devices can only
|
|
* perform some basic operations, like setting the CPU reset vector, through
|
|
* SMC calls to the secure monitor. The calls are completely specific to
|
|
* Trusted Foundations, and do *not* follow the SMC calling convention or the
|
|
* PSCI standard.
|
|
*/
|
|
|
|
#ifndef __ASM_ARM_TRUSTED_FOUNDATIONS_H
|
|
#define __ASM_ARM_TRUSTED_FOUNDATIONS_H
|
|
|
|
#include <linux/kconfig.h>
|
|
#include <linux/printk.h>
|
|
#include <linux/bug.h>
|
|
#include <linux/of.h>
|
|
#include <linux/cpu.h>
|
|
#include <linux/smp.h>
|
|
|
|
struct trusted_foundations_platform_data {
|
|
unsigned int version_major;
|
|
unsigned int version_minor;
|
|
};
|
|
|
|
#if IS_ENABLED(CONFIG_TRUSTED_FOUNDATIONS)
|
|
|
|
void register_trusted_foundations(struct trusted_foundations_platform_data *pd);
|
|
void of_register_trusted_foundations(void);
|
|
|
|
#else /* CONFIG_TRUSTED_FOUNDATIONS */
|
|
|
|
static inline void register_trusted_foundations(
|
|
struct trusted_foundations_platform_data *pd)
|
|
{
|
|
/*
|
|
* If the system requires TF and we cannot provide it, continue booting
|
|
* but disable features that cannot be provided.
|
|
*/
|
|
pr_err("No support for Trusted Foundations, continuing in degraded mode.\n");
|
|
pr_err("Secondary processors as well as CPU PM will be disabled.\n");
|
|
#if IS_ENABLED(CONFIG_SMP)
|
|
setup_max_cpus = 0;
|
|
#endif
|
|
cpu_idle_poll_ctrl(true);
|
|
}
|
|
|
|
static inline void of_register_trusted_foundations(void)
|
|
{
|
|
/*
|
|
* If we find the target should enable TF but does not support it,
|
|
* fail as the system won't be able to do much anyway
|
|
*/
|
|
if (of_find_compatible_node(NULL, NULL, "tlm,trusted-foundations"))
|
|
register_trusted_foundations(NULL);
|
|
}
|
|
#endif /* CONFIG_TRUSTED_FOUNDATIONS */
|
|
|
|
#endif
|