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32825eaddc
Implement request_arg() sysreset_op for QCOM SoCs that use PSCI to reset to EDL (Emergency Download) mode. Reviewed-by: Casey Connolly <casey.connolly@linaro.org> Reviewed-by: Sumit Garg <sumit.garg@oss.qualcomm.com> Signed-off-by: Varadarajan Narayanan <varadarajan.narayanan@oss.qualcomm.com> Link: https://patch.msgid.link/20260121063920.1500293-4-varadarajan.narayanan@oss.qualcomm.com [casey: add missing ARM_SMCCC depends to kconfig to fix CI allyesconfig] Signed-off-by: Casey Connolly <casey.connolly@linaro.org>
46 lines
1.1 KiB
C
46 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2017 Masahiro Yamada <yamada.masahiro@socionext.com>
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* Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
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*/
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#include <dm.h>
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#include <sysreset.h>
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#include <asm/system.h>
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#include <linux/errno.h>
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#include <linux/psci.h>
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#include <asm/psci.h>
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static int qcom_psci_sysreset_get_status(struct udevice *dev, char *buf, int size)
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{
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return -EOPNOTSUPP;
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}
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static int qcom_psci_sysreset_request_arg(struct udevice *dev, int argc,
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char * const argv[])
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{
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if (!strncasecmp(argv[1], "-edl", 4)) {
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/* Supported in qcs9100, qcs8300, sc7280, qcs615 */
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if (psci_features(ARM_PSCI_1_1_FN64_SYSTEM_RESET2) ==
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ARM_PSCI_RET_SUCCESS) {
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psci_system_reset2(0, 1);
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return -EINPROGRESS;
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}
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printf("PSCI SYSTEM_RESET2 not supported\n");
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}
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return -EPROTONOSUPPORT;
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}
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static struct sysreset_ops qcom_psci_sysreset_ops = {
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.request_arg = qcom_psci_sysreset_request_arg,
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.get_status = qcom_psci_sysreset_get_status,
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};
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U_BOOT_DRIVER(qcom_psci_sysreset) = {
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.name = "qcom_psci-sysreset",
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.id = UCLASS_SYSRESET,
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.ops = &qcom_psci_sysreset_ops,
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.flags = DM_FLAG_PRE_RELOC,
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};
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