mirror of
https://github.com/smaeul/u-boot.git
synced 2025-11-03 21:48:15 +00:00
67969516b0
replace info logs with debug logs Signed-off-by: Abdellatif El Khlifi <abdellatif.elkhlifi@arm.com> Cc: Tom Rini <trini@konsulko.com> Cc: Simon Glass <sjg@chromium.org> Reviewed-by: Simon Glass <sjg@chromium.org>
105 lines
2.6 KiB
C
105 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright 2022-2023 Arm Limited and/or its affiliates <open-source-office@arm.com>
|
|
*
|
|
* Authors:
|
|
* Abdellatif El Khlifi <abdellatif.elkhlifi@arm.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <arm_ffa.h>
|
|
#include <arm_ffa_priv.h>
|
|
#include <dm.h>
|
|
#include <log.h>
|
|
#include <asm/global_data.h>
|
|
#include <dm/device-internal.h>
|
|
#include <linux/errno.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
/**
|
|
* invoke_ffa_fn() - SMC wrapper
|
|
* @args: FF-A ABI arguments to be copied to Xn registers
|
|
* @res: FF-A ABI return data to be copied from Xn registers
|
|
*
|
|
* Calls low level SMC assembly function
|
|
*/
|
|
void invoke_ffa_fn(ffa_value_t args, ffa_value_t *res)
|
|
{
|
|
arm_smccc_1_2_smc(&args, res);
|
|
}
|
|
|
|
/**
|
|
* arm_ffa_discover() - perform FF-A discovery
|
|
* @dev: The Arm FF-A bus device (arm_ffa)
|
|
* Try to discover the FF-A framework. Discovery is performed by
|
|
* querying the FF-A framework version from secure world using the FFA_VERSION ABI.
|
|
* Return:
|
|
*
|
|
* true on success. Otherwise, false.
|
|
*/
|
|
static bool arm_ffa_discover(struct udevice *dev)
|
|
{
|
|
int ret;
|
|
|
|
log_debug("Arm FF-A framework discovery\n");
|
|
|
|
ret = ffa_get_version_hdlr(dev);
|
|
if (ret)
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* arm_ffa_is_supported() - FF-A bus discovery callback
|
|
* @invoke_fn: legacy SMC invoke function (not used)
|
|
*
|
|
* Perform FF-A discovery by calling arm_ffa_discover().
|
|
* Discovery is performed by querying the FF-A framework version from
|
|
* secure world using the FFA_VERSION ABI.
|
|
*
|
|
* The FF-A driver is registered as an SMCCC feature driver. So, features discovery
|
|
* callbacks are called by the PSCI driver (PSCI device is the SMCCC features
|
|
* root device).
|
|
*
|
|
* The FF-A driver supports the SMCCCv1.2 extended input/output registers.
|
|
* So, the legacy SMC invocation is not used.
|
|
*
|
|
* Return:
|
|
*
|
|
* 0 on success. Otherwise, failure
|
|
*/
|
|
static bool arm_ffa_is_supported(void (*invoke_fn)(ulong a0, ulong a1,
|
|
ulong a2, ulong a3,
|
|
ulong a4, ulong a5,
|
|
ulong a6, ulong a7,
|
|
struct arm_smccc_res *res))
|
|
{
|
|
return arm_ffa_discover(NULL);
|
|
}
|
|
|
|
/* Arm FF-A driver operations */
|
|
|
|
static const struct ffa_bus_ops ffa_ops = {
|
|
.partition_info_get = ffa_get_partitions_info_hdlr,
|
|
.sync_send_receive = ffa_msg_send_direct_req_hdlr,
|
|
.rxtx_unmap = ffa_unmap_rxtx_buffers_hdlr,
|
|
};
|
|
|
|
/* Registering the FF-A driver as an SMCCC feature driver */
|
|
|
|
ARM_SMCCC_FEATURE_DRIVER(arm_ffa) = {
|
|
.driver_name = FFA_DRV_NAME,
|
|
.is_supported = arm_ffa_is_supported,
|
|
};
|
|
|
|
/* Declaring the FF-A driver under UCLASS_FFA */
|
|
|
|
U_BOOT_DRIVER(arm_ffa) = {
|
|
.name = FFA_DRV_NAME,
|
|
.id = UCLASS_FFA,
|
|
.flags = DM_REMOVE_OS_PREPARE,
|
|
.ops = &ffa_ops,
|
|
};
|