[PATCH v1 0/2] Add FPGA configuration when booting Linux

[PATCH v1 0/2] Add FPGA configuration when booting Linux

[muhammad.hazim.izzat.zamri]

From: Muhammad Hazim Izzat Zamri <muhammad.hazim.izzat.zamri@altera.com>

This patchset enable the capability to automatically perform
FPGA configuration when booting Linux FIT image via bootm command.
The FPGA configuration bitstream shall be packed within the
FIT image.

Second patch is to add additional flag to check whether an FPGA
driver is able to load a particular FPGA bitstream image.

Both patch have been tested and able to boot U-boot using
debugger and QSPI boot.

Muhammad Hazim Izzat Zamri (2):
  drivers: fpga: Add FPGA configuration during bootm for Intel SOCFPGA
  drivers: fpga: Follow mainline to pass compatible flags to fpga_load

 drivers/fpga/altera.c | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

--
2.25.1

[PATCH v1 1/2] drivers: fpga: Add FPGA configuration during bootm for Intel SOCFPGA

[muhammad.hazim.izzat.zamri]

From: Muhammad Hazim Izzat Zamri <muhammad.hazim.izzat.zamri@altera.com>

Enabling the capability to automatically perform FPGA configuration
when booting Linux FIT image via bootm command. The FPGA
configuration bitstream shall be packed within the FIT image.

The FPGA data (full or partial) is checked by the SDM hardware,
for Intel SDM Mailbox based devices. Hence always return full
bitstream.

Second function is to enable the HPS to FPGA bridges when FPGA load
is completed successfully. This is to ensure the FPGA is accessible
by the HPS.

Signed-off-by: Muhammad Hazim Izzat Zamri <muhammad.hazim.izzat.zamri@altera.com>
---
 drivers/fpga/altera.c | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/drivers/fpga/altera.c b/drivers/fpga/altera.c
index ae06f0123a0..136ccfc2de4 100644
--- a/drivers/fpga/altera.c
+++ b/drivers/fpga/altera.c
@@ -12,6 +12,10 @@
 /*
  *  Altera FPGA support
  */
+#if IS_ENABLED(CONFIG_TARGET_SOCFPGA_AGILEX) || \
+	IS_ENABLED(CONFIG_TARGET_SOCFPGA_STRATIX10)
+#include <asm/arch/misc.h>
+#endif
 #include <errno.h>
 #include <ACEX1K.h>
 #include <log.h>
@@ -47,6 +51,42 @@ static const struct altera_fpga {
 #endif
 };

+#if IS_ENABLED(CONFIG_TARGET_SOCFPGA_AGILEX) || \
+	IS_ENABLED(CONFIG_TARGET_SOCFPGA_STRATIX10)
+int fpga_is_partial_data(int devnum, size_t img_len)
+{
+	/*
+	 * The FPGA data (full or partial) is checked by
+	 * the SDM hardware, for Intel SDM Mailbox based
+	 * devices. Hence always return full bitstream.
+	 *
+	 * For Cyclone V and Arria 10 family, the bitstream
+	 * type parameter is not handled by the driver.
+	 */
+	return 0;
+}
+
+int fpga_loadbitstream(int devnum, char *fpgadata, size_t size,
+		       bitstream_type bstype)
+{
+	int ret_val;
+
+	ret_val = fpga_load(devnum, (void *)fpgadata, size, bstype);
+
+	/*
+	 * Enable the HPS to FPGA bridges when FPGA load is completed
+	 * successfully. This is to ensure the FPGA is accessible
+	 * by the HPS.
+	 */
+	if (!ret_val) {
+		printf("Enable FPGA bridges\n");
+		do_bridge_reset(1, ~0);
+	}
+
+	return ret_val;
+}
+#endif
+
 static int altera_validate(Altera_desc *desc, const char *fn)
 {
 	if (!desc) {
--
2.25.1

[PATCH v1 2/2] drivers: fpga: Follow mainline to pass compatible flags to fpga_load

[muhammad.hazim.izzat.zamri]

From: Muhammad Hazim Izzat Zamri <muhammad.hazim.izzat.zamri@altera.com>

Introducing additional flag to check whether an FPGA driver is able to
load a particular FPGA bitstream image.

Generally, flag variable is used to enable or disable certain features,
specify additional parameters (such as error handling), or modify how
the function operates.

Hence, in this function flags is an integer that can be used to pass
configuration options to the fpga_load function. Here, it's
initialized to 0, meaning no special options are enabled, but it could
modify the flags to influence the function's behavior.

Signed-off-by: Muhammad Hazim Izzat Zamri <muhammad.hazim.izzat.zamri@altera.com>
---
 drivers/fpga/altera.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/fpga/altera.c b/drivers/fpga/altera.c
index 136ccfc2de4..64fda3a307c 100644
--- a/drivers/fpga/altera.c
+++ b/drivers/fpga/altera.c
@@ -70,8 +70,9 @@ int fpga_loadbitstream(int devnum, char *fpgadata, size_t size,
 		       bitstream_type bstype)
 {
 	int ret_val;
+	int flags = 0;

-	ret_val = fpga_load(devnum, (void *)fpgadata, size, bstype);
+	ret_val = fpga_load(devnum, (void *)fpgadata, size, bstype, flags);

 	/*
 	 * Enable the HPS to FPGA bridges when FPGA load is completed
--
2.25.1

Re: [PATCH v1 0/2] Add FPGA configuration when booting Linux

[Michal Simek]

On 3/14/25 03:19, muhammad.hazim.izzat.zamri@altera.com wrote:
> From: Muhammad Hazim Izzat Zamri <muhammad.hazim.izzat.zamri@altera.com>
> 
> This patchset enable the capability to automatically perform
> FPGA configuration when booting Linux FIT image via bootm command.
> The FPGA configuration bitstream shall be packed within the
> FIT image.
> 
> Second patch is to add additional flag to check whether an FPGA
> driver is able to load a particular FPGA bitstream image.
> 
> Both patch have been tested and able to boot U-boot using
> debugger and QSPI boot.
> 
> Muhammad Hazim Izzat Zamri (2):
>    drivers: fpga: Add FPGA configuration during bootm for Intel SOCFPGA
>    drivers: fpga: Follow mainline to pass compatible flags to fpga_load
> 
>   drivers/fpga/altera.c | 41 +++++++++++++++++++++++++++++++++++++++++
>   1 file changed, 41 insertions(+)
> 
> --
> 2.25.1
> 

Applied.
M

[PATCH v1 0/2] Add FPGA configuration when booting Linux

[muhammad.hazim.izzat.zamri]

From: Muhammad Hazim Izzat Zamri <muhammad.hazim.izzat.zamri@altera.com>

This patchset enable the capability to automatically perform
FPGA configuration when booting Linux FIT image via bootm command.
The FPGA configuration bitstream shall be packed within the
FIT image.

Second patch is to add additional flag to check whether an FPGA
driver is able to load a particular FPGA bitstream image.

Both patch have been tested and able to boot U-boot using
debugger and QSPI boot.

Muhammad Hazim Izzat Zamri (2):
  drivers: fpga: Add FPGA configuration during bootm for Intel SOCFPGA
  drivers: fpga: Follow mainline to pass compatible flags to fpga_load

 drivers/fpga/altera.c | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

--
2.25.1

[PATCH v1 0/2] Add FPGA configuration when booting Linux

[muhammad.hazim.izzat.zamri]

From: Muhammad Hazim Izzat Zamri <muhammad.hazim.izzat.zamri@altera.com>

This patchset enable the capability to automatically perform
FPGA configuration when booting Linux FIT image via bootm command.
The FPGA configuration bitstream shall be packed within the
FIT image.

Second patch is to add additional flag to check whether an FPGA
driver is able to load a particular FPGA bitstream image.

Both patch have been tested and able to boot U-boot using
debugger and QSPI boot.

Muhammad Hazim Izzat Zamri (2):
  drivers: fpga: Add FPGA configuration during bootm for Intel SOCFPGA
  drivers: fpga: Follow mainline to pass compatible flags to fpga_load

 drivers/fpga/altera.c | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

--
2.25.1