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Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0039-crypto-ccp-Add-DOWNLOAD_FIRMWARE-SEV-command.patch')
-rw-r--r--meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0039-crypto-ccp-Add-DOWNLOAD_FIRMWARE-SEV-command.patch223
1 files changed, 0 insertions, 223 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0039-crypto-ccp-Add-DOWNLOAD_FIRMWARE-SEV-command.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0039-crypto-ccp-Add-DOWNLOAD_FIRMWARE-SEV-command.patch
deleted file mode 100644
index 73e46ca2..00000000
--- a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0039-crypto-ccp-Add-DOWNLOAD_FIRMWARE-SEV-command.patch
+++ /dev/null
@@ -1,223 +0,0 @@
-From 1856c4c431831ab97dce791f992bb70765521965 Mon Sep 17 00:00:00 2001
-From: Janakarajan Natarajan <Janakarajan.Natarajan@amd.com>
-Date: Fri, 25 May 2018 15:23:29 -0500
-Subject: [PATCH 39/95] crypto: ccp - Add DOWNLOAD_FIRMWARE SEV command
-
-The DOWNLOAD_FIRMWARE command, added as of SEV API v0.15, allows the OS
-to install SEV firmware newer than the currently active SEV firmware.
-
-For the new SEV firmware to be applied it must:
-* Pass the validation test performed by the existing firmware.
-* Be of the same build or a newer build compared to the existing firmware.
-
-For more information please refer to "Section 5.11 DOWNLOAD_FIRMWARE" of
-https://support.amd.com/TechDocs/55766_SEV-KM%20API_Specification.pdf
-
-Signed-off-by: Janakarajan Natarajan <Janakarajan.Natarajan@amd.com>
-Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
-Signed-off-by: Sudheesh Mavila <sudheesh.mavila@amd.com>
----
- drivers/crypto/ccp/psp-dev.c | 99 +++++++++++++++++++++++++++++++++++++++-----
- drivers/crypto/ccp/psp-dev.h | 4 ++
- include/linux/psp-sev.h | 12 ++++++
- 3 files changed, 105 insertions(+), 10 deletions(-)
-
-diff --git a/drivers/crypto/ccp/psp-dev.c b/drivers/crypto/ccp/psp-dev.c
-index d95ec52..12838b4 100644
---- a/drivers/crypto/ccp/psp-dev.c
-+++ b/drivers/crypto/ccp/psp-dev.c
-@@ -22,11 +22,17 @@
- #include <linux/delay.h>
- #include <linux/hw_random.h>
- #include <linux/ccp.h>
-+#include <linux/firmware.h>
-
- #include "sp-dev.h"
- #include "psp-dev.h"
-
-+#define SEV_VERSION_GREATER_OR_EQUAL(_maj, _min) \
-+ ((psp_master->api_major) >= _maj && \
-+ (psp_master->api_minor) >= _min)
-+
- #define DEVICE_NAME "sev"
-+#define SEV_FW_FILE "amd/sev.fw"
-
- static DEFINE_MUTEX(sev_cmd_mutex);
- static struct sev_misc_dev *misc_dev;
-@@ -112,6 +118,7 @@ static int sev_cmd_buffer_len(int cmd)
- case SEV_CMD_RECEIVE_UPDATE_DATA: return sizeof(struct sev_data_receive_update_data);
- case SEV_CMD_RECEIVE_UPDATE_VMSA: return sizeof(struct sev_data_receive_update_vmsa);
- case SEV_CMD_LAUNCH_UPDATE_SECRET: return sizeof(struct sev_data_launch_secret);
-+ case SEV_CMD_DOWNLOAD_FIRMWARE: return sizeof(struct sev_data_download_firmware);
- default: return 0;
- }
-
-@@ -378,6 +385,79 @@ void *psp_copy_user_blob(u64 __user uaddr, u32 len)
- }
- EXPORT_SYMBOL_GPL(psp_copy_user_blob);
-
-+static int sev_get_api_version(void)
-+{
-+ struct sev_user_data_status *status;
-+ int error, ret;
-+
-+ status = &psp_master->status_cmd_buf;
-+ ret = sev_platform_status(status, &error);
-+ if (ret) {
-+ dev_err(psp_master->dev,
-+ "SEV: failed to get status. Error: %#x\n", error);
-+ return 1;
-+ }
-+
-+ psp_master->api_major = status->api_major;
-+ psp_master->api_minor = status->api_minor;
-+ psp_master->build = status->build;
-+
-+ return 0;
-+}
-+
-+/* Don't fail if SEV FW couldn't be updated. Continue with existing SEV FW */
-+static int sev_update_firmware(struct device *dev)
-+{
-+ struct sev_data_download_firmware *data;
-+ const struct firmware *firmware;
-+ int ret, error, order;
-+ struct page *p;
-+ u64 data_size;
-+
-+ ret = request_firmware(&firmware, SEV_FW_FILE, dev);
-+ if (ret < 0)
-+ return -1;
-+
-+ /*
-+ * SEV FW expects the physical address given to it to be 32
-+ * byte aligned. Memory allocated has structure placed at the
-+ * beginning followed by the firmware being passed to the SEV
-+ * FW. Allocate enough memory for data structure + alignment
-+ * padding + SEV FW.
-+ */
-+ data_size = ALIGN(sizeof(struct sev_data_download_firmware), 32);
-+
-+ order = get_order(firmware->size + data_size);
-+ p = alloc_pages(GFP_KERNEL, order);
-+ if (!p) {
-+ ret = -1;
-+ goto fw_err;
-+ }
-+
-+ /*
-+ * Copy firmware data to a kernel allocated contiguous
-+ * memory region.
-+ */
-+ data = page_address(p);
-+ memcpy(page_address(p) + data_size, firmware->data, firmware->size);
-+
-+ data->address = __psp_pa(page_address(p) + data_size);
-+ data->len = firmware->size;
-+
-+ ret = sev_do_cmd(SEV_CMD_DOWNLOAD_FIRMWARE, data, &error);
-+ if (ret)
-+ dev_dbg(dev, "Failed to update SEV firmware: %#x\n", error);
-+ else
-+ dev_info(dev, "SEV firmware update successful\n");
-+
-+ __free_pages(p, order);
-+
-+fw_err:
-+ release_firmware(firmware);
-+
-+ return ret;
-+}
-+
- static int sev_ioctl_do_pek_import(struct sev_issue_cmd *argp)
- {
- struct sev_user_data_pek_cert_import input;
-@@ -750,7 +830,6 @@ EXPORT_SYMBOL_GPL(sev_issue_cmd_external_user);
-
- void psp_pci_init(void)
- {
-- struct sev_user_data_status *status;
- struct sp_device *sp;
- int error, rc;
-
-@@ -760,6 +839,13 @@ void psp_pci_init(void)
-
- psp_master = sp->psp_data;
-
-+ if (sev_get_api_version())
-+ goto err;
-+
-+ if (SEV_VERSION_GREATER_OR_EQUAL(0, 15) &&
-+ sev_update_firmware(psp_master->dev) == 0)
-+ sev_get_api_version();
-+
- /* Initialize the platform */
- rc = sev_platform_init(&error);
- if (rc) {
-@@ -767,16 +853,9 @@ void psp_pci_init(void)
- goto err;
- }
-
-- /* Display SEV firmware version */
-- status = &psp_master->status_cmd_buf;
-- rc = sev_platform_status(status, &error);
-- if (rc) {
-- dev_err(sp->dev, "SEV: failed to get status error %#x\n", error);
-- goto err;
-- }
-+ dev_info(sp->dev, "SEV API:%d.%d build:%d\n", psp_master->api_major,
-+ psp_master->api_minor, psp_master->build);
-
-- dev_info(sp->dev, "SEV API:%d.%d build:%d\n", status->api_major,
-- status->api_minor, status->build);
- return;
-
- err:
-diff --git a/drivers/crypto/ccp/psp-dev.h b/drivers/crypto/ccp/psp-dev.h
-index c81f0b1..c7e9098a 100644
---- a/drivers/crypto/ccp/psp-dev.h
-+++ b/drivers/crypto/ccp/psp-dev.h
-@@ -78,6 +78,10 @@ struct psp_device {
- struct sev_misc_dev *sev_misc;
- struct sev_user_data_status status_cmd_buf;
- struct sev_data_init init_cmd_buf;
-+
-+ u8 api_major;
-+ u8 api_minor;
-+ u8 build;
- };
-
- #endif /* __PSP_DEV_H */
-diff --git a/include/linux/psp-sev.h b/include/linux/psp-sev.h
-index 93addfa..1d24962 100644
---- a/include/linux/psp-sev.h
-+++ b/include/linux/psp-sev.h
-@@ -54,6 +54,7 @@ enum sev_cmd {
- SEV_CMD_PDH_CERT_EXPORT = 0x008,
- SEV_CMD_PDH_GEN = 0x009,
- SEV_CMD_DF_FLUSH = 0x00A,
-+ SEV_CMD_DOWNLOAD_FIRMWARE = 0x00B,
-
- /* Guest commands */
- SEV_CMD_DECOMMISSION = 0x020,
-@@ -130,6 +131,17 @@ struct sev_data_pek_cert_import {
- } __packed;
-
- /**
-+ * struct sev_data_download_firmware - DOWNLOAD_FIRMWARE command parameters
-+ *
-+ * @address: physical address of firmware image
-+ * @len: len of the firmware image
-+ */
-+struct sev_data_download_firmware {
-+ u64 address; /* In */
-+ u32 len; /* In */
-+} __packed;
-+
-+/**
- * struct sev_data_pdh_cert_export - PDH_CERT_EXPORT command parameters
- *
- * @pdh_address: PDH certificate address
---
-2.7.4
-
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-04-26 03:29:52 +0000