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The max size of the large ICM carveout is 1TB, has a granularity of 128MB and will be passed and printed in hex. The size unit is MB. Signed-off-by: Asmaa Mnebhi --- drivers/platform/mellanox/mlxbf-bootctl.c | 42 +++++++++++++++++++++++ drivers/platform/mellanox/mlxbf-bootctl.h | 9 +++++ 2 files changed, 51 insertions(+) diff --git a/drivers/platform/mellanox/mlxbf-bootctl.c b/drivers/platform/mellanox/mlxbf-bootctl.c index fb9f7815c6cd..3ea11250b681 100644 --- a/drivers/platform/mellanox/mlxbf-bootctl.c +++ b/drivers/platform/mellanox/mlxbf-bootctl.c @@ -79,6 +79,8 @@ static void __iomem *mlxbf_rsh_scratch_buf_data; static const char * const mlxbf_rsh_log_level[] = { "INFO", "WARN", "ERR", "ASSERT"}; +static DEFINE_MUTEX(icm_ops_lock); + /* ARM SMC call which is atomic and no need for lock. */ static int mlxbf_bootctl_smc(unsigned int smc_op, int smc_arg) { @@ -391,6 +393,44 @@ static ssize_t rsh_log_store(struct device *dev, return count; } +static ssize_t large_icm_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct arm_smccc_res res; + + mutex_lock(&icm_ops_lock); + arm_smccc_smc(MLNX_HANDLE_GET_ICM_INFO, 0, 0, 0, 0, + 0, 0, 0, &res); + mutex_unlock(&icm_ops_lock); + if (res.a0) + return -EPERM; + + return snprintf(buf, PAGE_SIZE, "0x%lx", res.a1); +} + +static ssize_t large_icm_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct arm_smccc_res res; + unsigned long icm_data; + int err; + + err = kstrtoul(buf, 16, &icm_data); + if (err) + return err; + + if (((icm_data != 0) && (icm_data < 0x80)) || + (icm_data > 0x100000) || (icm_data % 128)) + return -EPERM; + + mutex_lock(&icm_ops_lock); + arm_smccc_smc(MLNX_HANDLE_SET_ICM_INFO, icm_data, 0, 0, 0, 0, 0, 0, &res); + mutex_unlock(&icm_ops_lock); + + return res.a0 ? -EPERM : count; +} + static DEVICE_ATTR_RW(post_reset_wdog); static DEVICE_ATTR_RW(reset_action); static DEVICE_ATTR_RW(second_reset_action); @@ -398,6 +438,7 @@ static DEVICE_ATTR_RO(lifecycle_state); static DEVICE_ATTR_RO(secure_boot_fuse_state); static DEVICE_ATTR_WO(fw_reset); static DEVICE_ATTR_WO(rsh_log); +static DEVICE_ATTR_RW(large_icm); static struct attribute *mlxbf_bootctl_attrs[] = { &dev_attr_post_reset_wdog.attr, @@ -407,6 +448,7 @@ static struct attribute *mlxbf_bootctl_attrs[] = { &dev_attr_secure_boot_fuse_state.attr, &dev_attr_fw_reset.attr, &dev_attr_rsh_log.attr, + &dev_attr_large_icm.attr, NULL }; diff --git a/drivers/platform/mellanox/mlxbf-bootctl.h b/drivers/platform/mellanox/mlxbf-bootctl.h index b48243f60a59..75d59ade92be 100644 --- a/drivers/platform/mellanox/mlxbf-bootctl.h +++ b/drivers/platform/mellanox/mlxbf-bootctl.h @@ -81,6 +81,15 @@ */ #define MLXBF_BOOTCTL_FW_RESET 0x8200000D +/* + * SMC function IDs to set and get the large ICM carveout size + * stored in the eeprom. + */ +#define MLNX_HANDLE_SET_ICM_INFO 0x82000012 +#define MLNX_HANDLE_GET_ICM_INFO 0x82000013 + +#define MAX_ICM_BUFFER_SIZE 10 + /* SMC function IDs for SiP Service queries */ #define MLXBF_BOOTCTL_SIP_SVC_CALL_COUNT 0x8200ff00 #define MLXBF_BOOTCTL_SIP_SVC_UID 0x8200ff01 From patchwork Wed Aug 9 14:15:13 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Asmaa Mnebhi X-Patchwork-Id: 133306 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:c44e:0:b0:3f2:4152:657d with SMTP id w14csp2880349vqr; Wed, 9 Aug 2023 08:35:01 -0700 (PDT) X-Google-Smtp-Source: AGHT+IHpHGxvHVYYj5M3cCrkUypagtTxgOErm4Hg7VWdZffOK5q5P8XL3ecifMFdpLc4vKMo1iJE X-Received: by 2002:a05:6a20:6a27:b0:12f:c0c1:d70 with SMTP id p39-20020a056a206a2700b0012fc0c10d70mr3177698pzk.40.1691595301334; Wed, 09 Aug 2023 08:35:01 -0700 (PDT) ARC-Seal: i=2; a=rsa-sha256; t=1691595301; cv=pass; d=google.com; s=arc-20160816; b=EDSyN7HIwrwTtJ24qVRRbbgX3wHZ6UNOMLaY2f0vT2E38tuLaYEuCelYtUwGK3lIMO SDgn/NtNW9M2JB9ZOS5LC6sX91cfOLBqNsJVR4iTGPIzpcyEqNmf8tvmo7EiObL4cfoq ngmmxo8cMD5JmK8ekhqtaYXoc6iWiGLLeAecmlGYw2taup5VZ0qRJxxbMlF+APE3JaPC alADpb5jTm5EPRzxGsTLXaM7CQgVmAn3Vpabr7KLwRKGiFT08N8iy3LyyGa+tlAfVhAt QKAfDQSam9YpRRycYwYXNF8NR08s71LTl1g7DH14xCYaCe5PBNuzMDqS+am61oRI6svT jtSw== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=z4MmuNLFPri2fvivAeMRtnGy/HT2rKReSxZ3t+ITmpk=; fh=vHlHRhMJ4j6iNFzLixeQoSUa0S0UyakHTVLwfishSxQ=; b=wer7T5BSomdZccOwXTuh/2CDqlg8FPVPt3ovuZiDdNGQbiC+oX0n9L1kp/x3wyAegY W5004QzRcjC/kcW6iOmRcmozyYtjTUMy4QAsgA+34b+I2R5fXbgTAqC3U90fqcun6IR4 a8XDY/eKeUIrDIS6gLck6CUKDtZ4GCN4rEv3sg5iwikUOskTlDaCQfIIlpdygV2Nr+gZ VPrTihP1cukBbW4gC4EnyJRRLNJMdl+8ufs7RZ3S51ZtMnQo4f2r0Ya58vVK7msi8Skd TbQR1tkL/NRUEgTHEDTxyA85+3zQKMhPUGmpSgQTvOHExo9qSNbVdD7OaoH6kZKcRMvh HAxg== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@Nvidia.com header.s=selector2 header.b=t0rtV5Jl; arc=pass (i=1 spf=pass spfdomain=nvidia.com dmarc=pass fromdomain=nvidia.com); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=nvidia.com Received: from out1.vger.email (out1.vger.email. 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Support setting the BlueField ARM boot state to "OS up". Signed-off-by: Asmaa Mnebhi --- drivers/platform/mellanox/mlxbf-bootctl.c | 25 +++++++++++++++++++++++ drivers/platform/mellanox/mlxbf-bootctl.h | 5 +++++ 2 files changed, 30 insertions(+) diff --git a/drivers/platform/mellanox/mlxbf-bootctl.c b/drivers/platform/mellanox/mlxbf-bootctl.c index 3ea11250b681..7a67fcc6dd98 100644 --- a/drivers/platform/mellanox/mlxbf-bootctl.c +++ b/drivers/platform/mellanox/mlxbf-bootctl.c @@ -80,6 +80,7 @@ static const char * const mlxbf_rsh_log_level[] = { "INFO", "WARN", "ERR", "ASSERT"}; static DEFINE_MUTEX(icm_ops_lock); +static DEFINE_MUTEX(os_up_lock); /* ARM SMC call which is atomic and no need for lock. */ static int mlxbf_bootctl_smc(unsigned int smc_op, int smc_arg) @@ -431,6 +432,28 @@ static ssize_t large_icm_store(struct device *dev, return res.a0 ? -EPERM : count; } +static ssize_t os_up_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct arm_smccc_res res; + unsigned long val; + int err; + + err = kstrtoul(buf, 10, &val); + if (err) + return err; + + if (val != 1) + return -EINVAL; + + mutex_lock(&os_up_lock); + arm_smccc_smc(MLNX_HANDLE_OS_UP, 0, 0, 0, 0, 0, 0, 0, &res); + mutex_unlock(&os_up_lock); + + return count; +} + static DEVICE_ATTR_RW(post_reset_wdog); static DEVICE_ATTR_RW(reset_action); static DEVICE_ATTR_RW(second_reset_action); @@ -439,6 +462,7 @@ static DEVICE_ATTR_RO(secure_boot_fuse_state); static DEVICE_ATTR_WO(fw_reset); static DEVICE_ATTR_WO(rsh_log); static DEVICE_ATTR_RW(large_icm); +static DEVICE_ATTR_WO(os_up); static struct attribute *mlxbf_bootctl_attrs[] = { &dev_attr_post_reset_wdog.attr, @@ -449,6 +473,7 @@ static struct attribute *mlxbf_bootctl_attrs[] = { &dev_attr_fw_reset.attr, &dev_attr_rsh_log.attr, &dev_attr_large_icm.attr, + &dev_attr_os_up.attr, NULL }; diff --git a/drivers/platform/mellanox/mlxbf-bootctl.h b/drivers/platform/mellanox/mlxbf-bootctl.h index 75d59ade92be..19142cc71312 100644 --- a/drivers/platform/mellanox/mlxbf-bootctl.h +++ b/drivers/platform/mellanox/mlxbf-bootctl.h @@ -90,6 +90,11 @@ #define MAX_ICM_BUFFER_SIZE 10 +/* + * SMC function ID to set the ARM boot state to up + */ +#define MLNX_HANDLE_OS_UP 0x82000014 + /* SMC function IDs for SiP Service queries */ #define MLXBF_BOOTCTL_SIP_SVC_CALL_COUNT 0x8200ff00 #define MLXBF_BOOTCTL_SIP_SVC_UID 0x8200ff01