[U-Boot] [PATCH v3 0/4] Stratix10 FPGA reconfiguration support

[U-Boot] [PATCH v3 0/4] Stratix10 FPGA reconfiguration support

[chee.hong.ang at intel.com]

From: "Ang, Chee Hong" <chee.hong.ang@intel.com>

Summary of v3 changes:
- Patch 1/4, 2/4 and 4/4 are unchanged
- Patch 3/4: Removed unnecessary empty socfpga_fpga_add() from misc.c
- Patch 3/4: Removed unnecessary '#ifdef CONFIG_FPGA' from misc_s10.c

v2 patchsets:
https://lists.denx.de/pipermail/u-boot/2018-October/343473.html

Ang, Chee Hong (4):
  arm: socfpga: stratix10: Add macros for mailbox's arguments
  arm: socfpga: stratix10: Add Stratix 10 FPGA Reconfiguration Driver
  arm: socfpga: stratix10: Add Stratix10 FPGA into FPGA device table
  arm: socfpga: stratix10: Enable Stratix10 FPGA Reconfiguration

 arch/arm/mach-socfpga/include/mach/mailbox_s10.h |   6 +
 arch/arm/mach-socfpga/misc.c                     |  22 ++
 arch/arm/mach-socfpga/misc_s10.c                 |   2 +
 configs/socfpga_stratix10_defconfig              |   1 +
 drivers/fpga/Kconfig                             |  11 +
 drivers/fpga/Makefile                            |   1 +
 drivers/fpga/altera.c                            |   6 +
 drivers/fpga/stratix10.c                         | 288 +++++++++++++++++++++++
 include/altera.h                                 |   8 +
 9 files changed, 345 insertions(+)
 create mode 100644 drivers/fpga/stratix10.c

-- 
2.7.4

[U-Boot] [PATCH v3 1/4] arm: socfpga: stratix10: Add macros for mailbox's arguments

[chee.hong.ang at intel.com]

From: "Ang, Chee Hong" <chee.hong.ang@intel.com>

Add macros for specifying number of arguments in mailbox command.

Signed-off-by: Ang, Chee Hong <chee.hong.ang@intel.com>
---
 arch/arm/mach-socfpga/include/mach/mailbox_s10.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm/mach-socfpga/include/mach/mailbox_s10.h b/arch/arm/mach-socfpga/include/mach/mailbox_s10.h
index 660df35..ae728a5 100644
--- a/arch/arm/mach-socfpga/include/mach/mailbox_s10.h
+++ b/arch/arm/mach-socfpga/include/mach/mailbox_s10.h
@@ -107,6 +107,12 @@ enum ALT_SDM_MBOX_RESP_CODE {
 #define RECONFIG_STATUS_PIN_STATUS			2
 #define RECONFIG_STATUS_SOFTFUNC_STATUS			3
 
+/* Macros for specifying number of arguments in mailbox command */
+#define MBOX_NUM_ARGS(n, b)				(((n) & 0xFF) << (b))
+#define MBOX_DIRECT_COUNT(n)				MBOX_NUM_ARGS((n), 0)
+#define MBOX_ARG_DESC_COUNT(n)				MBOX_NUM_ARGS((n), 8)
+#define MBOX_RESP_DESC_COUNT(n)				MBOX_NUM_ARGS((n), 16)
+
 #define MBOX_CFGSTAT_STATE_IDLE				0x00000000
 #define MBOX_CFGSTAT_STATE_CONFIG			0x10000000
 #define MBOX_CFGSTAT_STATE_FAILACK			0x08000000
-- 
2.7.4

[U-Boot] [PATCH v3 2/4] arm: socfpga: stratix10: Add Stratix 10 FPGA Reconfiguration Driver

[chee.hong.ang at intel.com]

From: "Ang, Chee Hong" <chee.hong.ang@intel.com>

Enable FPGA reconfiguration support for Stratix 10 SoC.

Signed-off-by: Ang, Chee Hong <chee.hong.ang@intel.com>
---
 drivers/fpga/Kconfig     |  11 ++
 drivers/fpga/Makefile    |   1 +
 drivers/fpga/stratix10.c | 288 +++++++++++++++++++++++++++++++++++++++++++++++
 include/altera.h         |   4 +
 4 files changed, 304 insertions(+)
 create mode 100644 drivers/fpga/stratix10.c

diff --git a/drivers/fpga/Kconfig b/drivers/fpga/Kconfig
index 50e9019..8f59193 100644
--- a/drivers/fpga/Kconfig
+++ b/drivers/fpga/Kconfig
@@ -31,6 +31,17 @@ config FPGA_CYCLON2
 	  Enable FPGA driver for loading bitstream in BIT and BIN format
 	  on Altera Cyclone II device.
 
+config FPGA_STRATIX10
+	bool "Enable Altera FPGA driver for Stratix 10"
+	depends on TARGET_SOCFPGA_STRATIX10
+	select FPGA_ALTERA
+	help
+	  Say Y here to enable the Altera Stratix 10 FPGA specific driver
+
+	  This provides common functionality for Altera Stratix 10 devices.
+	  Enable FPGA driver for writing bitstream into Altera Stratix10
+	  device.
+
 config FPGA_XILINX
 	bool "Enable Xilinx FPGA drivers"
 	select FPGA
diff --git a/drivers/fpga/Makefile b/drivers/fpga/Makefile
index 97d7d5d..5a778c1 100644
--- a/drivers/fpga/Makefile
+++ b/drivers/fpga/Makefile
@@ -17,6 +17,7 @@ obj-$(CONFIG_FPGA_ACEX1K) += ACEX1K.o
 obj-$(CONFIG_FPGA_CYCLON2) += cyclon2.o
 obj-$(CONFIG_FPGA_STRATIX_II) += stratixII.o
 obj-$(CONFIG_FPGA_STRATIX_V) += stratixv.o
+obj-$(CONFIG_FPGA_STRATIX10) += stratix10.o
 obj-$(CONFIG_FPGA_SOCFPGA) += socfpga.o
 obj-$(CONFIG_TARGET_SOCFPGA_GEN5) += socfpga_gen5.o
 obj-$(CONFIG_TARGET_SOCFPGA_ARRIA10) += socfpga_arria10.o
diff --git a/drivers/fpga/stratix10.c b/drivers/fpga/stratix10.c
new file mode 100644
index 0000000..6728291
--- /dev/null
+++ b/drivers/fpga/stratix10.c
@@ -0,0 +1,288 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018 Intel Corporation <www.intel.com>
+ */
+
+#include <common.h>
+#include <altera.h>
+#include <asm/arch/mailbox_s10.h>
+
+#define RECONFIG_STATUS_POLL_RESP_TIMEOUT_MS		60000
+#define RECONFIG_STATUS_INTERVAL_DELAY_US		1000000
+
+static const struct mbox_cfgstat_state {
+	int			err_no;
+	const char		*error_name;
+} mbox_cfgstat_state[] = {
+	{MBOX_CFGSTAT_STATE_IDLE, "FPGA in idle mode."},
+	{MBOX_CFGSTAT_STATE_CONFIG, "FPGA in config mode."},
+	{MBOX_CFGSTAT_STATE_FAILACK, "Acknowledgment failed!"},
+	{MBOX_CFGSTAT_STATE_ERROR_INVALID, "Invalid bitstream!"},
+	{MBOX_CFGSTAT_STATE_ERROR_CORRUPT, "Corrupted bitstream!"},
+	{MBOX_CFGSTAT_STATE_ERROR_AUTH, "Authentication failed!"},
+	{MBOX_CFGSTAT_STATE_ERROR_CORE_IO, "I/O error!"},
+	{MBOX_CFGSTAT_STATE_ERROR_HARDWARE, "Hardware error!"},
+	{MBOX_CFGSTAT_STATE_ERROR_FAKE, "Fake error!"},
+	{MBOX_CFGSTAT_STATE_ERROR_BOOT_INFO, "Error in boot info!"},
+	{MBOX_CFGSTAT_STATE_ERROR_QSPI_ERROR, "Error in QSPI!"},
+	{MBOX_RESP_ERROR, "Mailbox general error!"},
+	{-ETIMEDOUT, "I/O timeout error"},
+	{-1, "Unknown error!"}
+};
+
+#define MBOX_CFGSTAT_MAX ARRAY_SIZE(mbox_cfgstat_state)
+
+static const char *mbox_cfgstat_to_str(int err)
+{
+	int i;
+
+	for (i = 0; i < MBOX_CFGSTAT_MAX - 1; i++) {
+		if (mbox_cfgstat_state[i].err_no == err)
+			return mbox_cfgstat_state[i].error_name;
+	}
+
+	return mbox_cfgstat_state[MBOX_CFGSTAT_MAX - 1].error_name;
+}
+
+/*
+ * Add the ongoing transaction's command ID into pending list and return
+ * the command ID for next transfer.
+ */
+static u8 add_transfer(u32 *xfer_pending_list, size_t list_size, u8 id)
+{
+	int i;
+
+	for (i = 0; i < list_size; i++) {
+		if (xfer_pending_list[i])
+			continue;
+		xfer_pending_list[i] = id;
+		debug("ID(%d) added to transaction pending list\n", id);
+		/*
+		 * Increment command ID for next transaction.
+		 * Valid command ID (4 bits) is from 1 to 15.
+		 */
+		id = (id % 15) + 1;
+		break;
+	}
+
+	return id;
+}
+
+/*
+ * Check whether response ID match the command ID in the transfer
+ * pending list. If a match is found in the transfer pending list,
+ * it clears the transfer pending list and return the matched
+ * command ID.
+ */
+static int get_and_clr_transfer(u32 *xfer_pending_list, size_t list_size,
+				u8 id)
+{
+	int i;
+
+	for (i = 0; i < list_size; i++) {
+		if (id != xfer_pending_list[i])
+			continue;
+		xfer_pending_list[i] = 0;
+		return id;
+	}
+
+	return 0;
+}
+
+/*
+ * Polling the FPGA configuration status.
+ * Return 0 for success, non-zero for error.
+ */
+static int reconfig_status_polling_resp(void)
+{
+	int ret;
+	unsigned long start = get_timer(0);
+
+	while (1) {
+		ret = mbox_get_fpga_config_status(MBOX_RECONFIG_STATUS);
+		if (!ret)
+			return 0;	/* configuration success */
+
+		if (ret != MBOX_CFGSTAT_STATE_CONFIG)
+			return ret;
+
+		if (get_timer(start) > RECONFIG_STATUS_POLL_RESP_TIMEOUT_MS)
+			break;	/* time out */
+
+		puts(".");
+		udelay(RECONFIG_STATUS_INTERVAL_DELAY_US);
+	}
+
+	return -ETIMEDOUT;
+}
+
+static u32 get_resp_hdr(u32 *r_index, u32 *w_index, u32 *resp_count,
+			u32 *resp_buf, u32 buf_size, u32 client_id)
+{
+	u32 buf[MBOX_RESP_BUFFER_SIZE];
+	u32 mbox_hdr;
+	u32 resp_len;
+	u32 hdr_len;
+	u32 i;
+
+	if (*resp_count < buf_size) {
+		u32 rcv_len_max = buf_size - *resp_count;
+
+		if (rcv_len_max > MBOX_RESP_BUFFER_SIZE)
+			rcv_len_max = MBOX_RESP_BUFFER_SIZE;
+		resp_len = mbox_rcv_resp(buf, rcv_len_max);
+
+		for (i = 0; i < resp_len; i++) {
+			resp_buf[(*w_index)++] = buf[i];
+			*w_index %= buf_size;
+			*resp_count++;
+		}
+	}
+
+	/* No response in buffer */
+	if (*resp_count == 0)
+		return 0;
+
+	mbox_hdr = resp_buf[*r_index];
+
+	hdr_len = MBOX_RESP_LEN_GET(mbox_hdr);
+
+	/* Insufficient header length to return a mailbox header */
+	if ((*resp_count - 1) < hdr_len)
+		return 0;
+
+	*r_index += (hdr_len + 1);
+	*r_index %= buf_size;
+	*resp_count -= (hdr_len + 1);
+
+	/* Make sure response belongs to us */
+	if (MBOX_RESP_CLIENT_GET(mbox_hdr) != client_id)
+		return 0;
+
+	return mbox_hdr;
+}
+
+/* Send bit stream data to SDM via RECONFIG_DATA mailbox command */
+static int send_reconfig_data(const void *rbf_data, size_t rbf_size,
+			      u32 xfer_max, u32 buf_size_max)
+{
+	u32 response_buffer[MBOX_RESP_BUFFER_SIZE];
+	u32 xfer_pending[MBOX_RESP_BUFFER_SIZE];
+	u32 resp_rindex = 0;
+	u32 resp_windex = 0;
+	u32 resp_count = 0;
+	u32 xfer_count = 0;
+	u8 resp_err = 0;
+	u8 cmd_id = 1;
+	u32 args[3];
+	int ret;
+
+	debug("SDM xfer_max = %d\n", xfer_max);
+	debug("SDM buf_size_max = %x\n\n", buf_size_max);
+
+	memset(xfer_pending, 0, sizeof(xfer_pending));
+
+	while (rbf_size || xfer_count) {
+		if (!resp_err && rbf_size && xfer_count < xfer_max) {
+			args[0] = MBOX_ARG_DESC_COUNT(1);
+			args[1] = (u32)rbf_data;
+			if (rbf_size >= buf_size_max) {
+				args[2] = buf_size_max;
+				rbf_size -= buf_size_max;
+				rbf_data += buf_size_max;
+			} else {
+				args[2] = (u32)rbf_size;
+				rbf_size = 0;
+			}
+
+			ret = mbox_send_cmd_only(cmd_id, MBOX_RECONFIG_DATA,
+						 MBOX_CMD_INDIRECT, 3, args);
+			if (ret) {
+				resp_err = 1;
+			} else {
+				xfer_count++;
+				cmd_id = add_transfer(xfer_pending,
+						      MBOX_RESP_BUFFER_SIZE,
+						      cmd_id);
+			}
+			puts(".");
+		} else {
+			u32 resp_hdr = get_resp_hdr(&resp_rindex, &resp_windex,
+						    &resp_count,
+						    response_buffer,
+						    MBOX_RESP_BUFFER_SIZE,
+						    MBOX_CLIENT_ID_UBOOT);
+
+			/*
+			 * If no valid response header found or
+			 * non-zero length from RECONFIG_DATA
+			 */
+			if (!resp_hdr || MBOX_RESP_LEN_GET(resp_hdr))
+				continue;
+
+			/* Check for response's status */
+			if (!resp_err) {
+				ret = MBOX_RESP_ERR_GET(resp_hdr);
+				debug("Response error code: %08x\n", ret);
+				/* Error in response */
+				if (ret)
+					resp_err = 1;
+			}
+
+			ret = get_and_clr_transfer(xfer_pending,
+						   MBOX_RESP_BUFFER_SIZE,
+						   MBOX_RESP_ID_GET(resp_hdr));
+			if (ret) {
+				/* Claim and reuse the ID */
+				cmd_id = (u8)ret;
+				xfer_count--;
+			}
+
+			if (resp_err && !xfer_count)
+				return ret;
+		}
+	}
+
+	return 0;
+}
+
+/*
+ * This is the interface used by FPGA driver.
+ * Return 0 for success, non-zero for error.
+ */
+int stratix10_load(Altera_desc *desc, const void *rbf_data, size_t rbf_size)
+{
+	int ret;
+	u32 resp_len = 2;
+	u32 resp_buf[2];
+
+	debug("Sending MBOX_RECONFIG...\n");
+	ret = mbox_send_cmd(MBOX_ID_UBOOT, MBOX_RECONFIG, MBOX_CMD_DIRECT, 0,
+			    NULL, 0, &resp_len, resp_buf);
+	if (ret) {
+		puts("Failure in RECONFIG mailbox command!\n");
+		return ret;
+	}
+
+	ret = send_reconfig_data(rbf_data, rbf_size, resp_buf[0], resp_buf[1]);
+	if (ret) {
+		printf("RECONFIG_DATA error: %08x, %s\n", ret,
+		       mbox_cfgstat_to_str(ret));
+		return ret;
+	}
+
+	/* Make sure we don't send MBOX_RECONFIG_STATUS too fast */
+	udelay(RECONFIG_STATUS_INTERVAL_DELAY_US);
+
+	debug("Polling with MBOX_RECONFIG_STATUS...\n");
+	ret = reconfig_status_polling_resp();
+	if (ret) {
+		printf("RECONFIG_STATUS Error: %08x, %s\n", ret,
+		       mbox_cfgstat_to_str(ret));
+		return ret;
+	}
+
+	puts("FPGA reconfiguration OK!\n");
+
+	return ret;
+}
diff --git a/include/altera.h b/include/altera.h
index ead5d3d..233b467 100644
--- a/include/altera.h
+++ b/include/altera.h
@@ -116,4 +116,8 @@ int socfpga_load(Altera_desc *desc, const void *rbf_data, size_t rbf_size);
 int stratixv_load(Altera_desc *desc, const void *rbf_data, size_t rbf_size);
 #endif
 
+#ifdef CONFIG_FPGA_STRATIX10
+int stratix10_load(Altera_desc *desc, const void *rbf_data, size_t rbf_size);
+#endif
+
 #endif /* _ALTERA_H_ */
-- 
2.7.4

[U-Boot] [PATCH v3 3/4] arm: socfpga: stratix10: Add Stratix10 FPGA into FPGA device table

[chee.hong.ang at intel.com]

From: "Ang, Chee Hong" <chee.hong.ang@intel.com>

Enable 'fpga' command in u-boot. User will be able to use the fpga
command to program the FPGA on Stratix10 SoC.

Signed-off-by: Ang, Chee Hong <chee.hong.ang@intel.com>
---
 arch/arm/mach-socfpga/misc.c     | 22 ++++++++++++++++++++++
 arch/arm/mach-socfpga/misc_s10.c |  2 ++
 drivers/fpga/altera.c            |  6 ++++++
 include/altera.h                 |  4 ++++
 4 files changed, 34 insertions(+)

diff --git a/arch/arm/mach-socfpga/misc.c b/arch/arm/mach-socfpga/misc.c
index a4f6d5c..350aad1 100644
--- a/arch/arm/mach-socfpga/misc.c
+++ b/arch/arm/mach-socfpga/misc.c
@@ -88,6 +88,27 @@ int overwrite_console(void)
 #endif
 
 #ifdef CONFIG_FPGA
+#ifdef CONFIG_FPGA_STRATIX10
+/*
+ * FPGA programming support for SoC FPGA Stratix 10
+ */
+static Altera_desc altera_fpga[] = {
+	{
+		/* Family */
+		Intel_FPGA_Stratix10,
+		/* Interface type */
+		secure_device_manager_mailbox,
+		/* No limitation as additional data will be ignored */
+		-1,
+		/* No device function table */
+		NULL,
+		/* Base interface address specified in driver */
+		NULL,
+		/* No cookie implementation */
+		0
+	},
+};
+#else
 /*
  * FPGA programming support for SoC FPGA Cyclone V
  */
@@ -107,6 +128,7 @@ static Altera_desc altera_fpga[] = {
 		0
 	},
 };
+#endif
 
 /* add device descriptor to FPGA device table */
 void socfpga_fpga_add(void)
diff --git a/arch/arm/mach-socfpga/misc_s10.c b/arch/arm/mach-socfpga/misc_s10.c
index 918baac..f23c0dc 100644
--- a/arch/arm/mach-socfpga/misc_s10.c
+++ b/arch/arm/mach-socfpga/misc_s10.c
@@ -124,6 +124,8 @@ int arch_misc_init(void)
 
 int arch_early_init_r(void)
 {
+	socfpga_fpga_add();
+
 	return 0;
 }
 
diff --git a/drivers/fpga/altera.c b/drivers/fpga/altera.c
index 9605554..7c8f518 100644
--- a/drivers/fpga/altera.c
+++ b/drivers/fpga/altera.c
@@ -39,6 +39,9 @@ static const struct altera_fpga {
 #if defined(CONFIG_FPGA_STRATIX_V)
 	{ Altera_StratixV, "StratixV", stratixv_load, NULL, NULL },
 #endif
+#if defined(CONFIG_FPGA_STRATIX10)
+	{ Intel_FPGA_Stratix10, "Stratix10", stratix10_load, NULL, NULL },
+#endif
 #if defined(CONFIG_FPGA_SOCFPGA)
 	{ Altera_SoCFPGA, "SoC FPGA", socfpga_load, NULL, NULL },
 #endif
@@ -154,6 +157,9 @@ int altera_info(Altera_desc *desc)
 	case fast_passive_parallel_security:
 		printf("Fast Passive Parallel with Security (FPPS)\n");
 		break;
+	case secure_device_manager_mailbox:
+		puts("Secure Device Manager (SDM) Mailbox\n");
+		break;
 		/* Add new interface types here */
 	default:
 		printf("Unsupported interface type, %d\n", desc->iface);
diff --git a/include/altera.h b/include/altera.h
index 233b467..22d55cf 100644
--- a/include/altera.h
+++ b/include/altera.h
@@ -39,6 +39,8 @@ enum altera_iface {
 	fast_passive_parallel,
 	/* fast passive parallel with security (FPPS) */
 	fast_passive_parallel_security,
+	/* secure device manager (SDM) mailbox */
+	secure_device_manager_mailbox,
 	/* insert all new types before this */
 	max_altera_iface_type,
 };
@@ -54,6 +56,8 @@ enum altera_family {
 	Altera_StratixII,
 	/* StratixV Family */
 	Altera_StratixV,
+	/* Stratix10 Family */
+	Intel_FPGA_Stratix10,
 	/* SoCFPGA Family */
 	Altera_SoCFPGA,
 
-- 
2.7.4

[U-Boot] [PATCH v3 4/4] arm: socfpga: stratix10: Enable Stratix10 FPGA Reconfiguration

[chee.hong.ang at intel.com]

From: "Ang, Chee Hong" <chee.hong.ang@intel.com>

Enable Stratix10 FPGA reconfiguration support in defconfig.

Signed-off-by: Ang, Chee Hong <chee.hong.ang@intel.com>
---
 configs/socfpga_stratix10_defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/configs/socfpga_stratix10_defconfig b/configs/socfpga_stratix10_defconfig
index 5f3d733..155c406 100644
--- a/configs/socfpga_stratix10_defconfig
+++ b/configs/socfpga_stratix10_defconfig
@@ -10,6 +10,7 @@ CONFIG_NR_DRAM_BANKS=1
 CONFIG_BOOTDELAY=5
 CONFIG_SPL_SPI_LOAD=y
 CONFIG_HUSH_PARSER=y
+CONFIG_FPGA_STRATIX10=y
 CONFIG_SYS_PROMPT="SOCFPGA_STRATIX10 # "
 CONFIG_CMD_MEMTEST=y
 # CONFIG_CMD_FLASH is not set
-- 
2.7.4