arm-trusted-firmware/plat/common/aarch64/plat_common.c

108 lines
2.5 KiB
C
Raw Normal View History

/*
* Copyright (c) 2014-2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <arch_helpers.h>
#include <assert.h>
#include <console.h>
#include <platform.h>
#include <xlat_mmu_helpers.h>
/*
* The following platform setup functions are weakly defined. They
* provide typical implementations that may be re-used by multiple
* platforms but may also be overridden by a platform if required.
*/
#pragma weak bl31_plat_enable_mmu
#pragma weak bl32_plat_enable_mmu
#pragma weak bl31_plat_runtime_setup
#if !ERROR_DEPRECATED
#pragma weak plat_get_syscnt_freq2
#pragma weak bl31_early_platform_setup2
#endif /* ERROR_DEPRECATED */
#if SDEI_SUPPORT
#pragma weak plat_sdei_handle_masked_trigger
#pragma weak plat_sdei_validate_entry_point
#endif
void bl31_plat_enable_mmu(uint32_t flags)
{
enable_mmu_el3(flags);
}
void bl32_plat_enable_mmu(uint32_t flags)
{
enable_mmu_el1(flags);
}
void bl31_plat_runtime_setup(void)
{
Add new function-pointer-based console API This patch overhauls the console API to allow for multiple console instances of different drivers that are active at the same time. Instead of binding to well-known function names (like console_core_init), consoles now provide a register function (e.g. console_16550_register()) that will hook them into the list of active consoles. All console operations will be dispatched to all consoles currently in the list. The new API will be selected by the build-time option MULTI_CONSOLE_API, which defaults to ${ERROR_DEPRECATED} for now. The old console API code will be retained to stay backwards-compatible to older platforms, but should no longer be used for any newly added platforms and can hopefully be removed at some point in the future. The new console API is intended to be used for both normal (bootup) and crash use cases, freeing platforms of the need to set up the crash console separately. Consoles can be individually configured to be active active at boot (until first handoff to EL2), at runtime (after first handoff to EL2), and/or after a crash. Console drivers should set a sane default upon registration that can be overridden with the console_set_scope() call. Code to hook up the crash reporting mechanism to this framework will be added with a later patch. This patch only affects AArch64, but the new API could easily be ported to AArch32 as well if desired. Change-Id: I35c5aa2cb3f719cfddd15565eb13c7cde4162549 Signed-off-by: Julius Werner <jwerner@chromium.org>
2017-08-01 02:15:11 +01:00
#if MULTI_CONSOLE_API
console_switch_state(CONSOLE_FLAG_RUNTIME);
#else
console_uninit();
Add new function-pointer-based console API This patch overhauls the console API to allow for multiple console instances of different drivers that are active at the same time. Instead of binding to well-known function names (like console_core_init), consoles now provide a register function (e.g. console_16550_register()) that will hook them into the list of active consoles. All console operations will be dispatched to all consoles currently in the list. The new API will be selected by the build-time option MULTI_CONSOLE_API, which defaults to ${ERROR_DEPRECATED} for now. The old console API code will be retained to stay backwards-compatible to older platforms, but should no longer be used for any newly added platforms and can hopefully be removed at some point in the future. The new console API is intended to be used for both normal (bootup) and crash use cases, freeing platforms of the need to set up the crash console separately. Consoles can be individually configured to be active active at boot (until first handoff to EL2), at runtime (after first handoff to EL2), and/or after a crash. Console drivers should set a sane default upon registration that can be overridden with the console_set_scope() call. Code to hook up the crash reporting mechanism to this framework will be added with a later patch. This patch only affects AArch64, but the new API could easily be ported to AArch32 as well if desired. Change-Id: I35c5aa2cb3f719cfddd15565eb13c7cde4162549 Signed-off-by: Julius Werner <jwerner@chromium.org>
2017-08-01 02:15:11 +01:00
#endif
}
#if !ENABLE_PLAT_COMPAT
/*
* Helper function for platform_get_pos() when platform compatibility is
* disabled. This is to enable SPDs using the older platform API to continue
* to work.
*/
unsigned int platform_core_pos_helper(unsigned long mpidr)
{
int idx = plat_core_pos_by_mpidr(mpidr);
assert(idx >= 0);
return idx;
}
#endif
#if !ERROR_DEPRECATED
unsigned int plat_get_syscnt_freq2(void)
{
WARN("plat_get_syscnt_freq() is deprecated\n");
WARN("Please define plat_get_syscnt_freq2()\n");
/*
* Suppress deprecated declaration warning in compatibility function
*/
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
unsigned long long freq = plat_get_syscnt_freq();
#pragma GCC diagnostic pop
assert(freq >> 32 == 0);
return (unsigned int)freq;
}
void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
u_register_t arg2, u_register_t arg3)
{
bl31_early_platform_setup((void *) arg0, (void *)arg1);
}
#endif /* ERROR_DEPRECATED */
#if SDEI_SUPPORT
/*
* Function that handles spurious SDEI interrupts while events are masked.
*/
void plat_sdei_handle_masked_trigger(uint64_t mpidr, unsigned int intr)
{
WARN("Spurious SDEI interrupt %u on masked PE %lx\n", intr, mpidr);
}
/*
* Default Function to validate SDEI entry point, which returns success.
* Platforms may override this with their own validation mechanism.
*/
int plat_sdei_validate_entry_point(uintptr_t ep, unsigned int client_mode)
{
return 0;
}
#endif