drivers: firmware: Add PDI load API support

This patch adds load PDI API support to enable full/partial PDI loading
from linux. Programmable Device Image (PDI) is combination of headers,
images and bitstream files to be loaded.

Reviewed-by: Moritz Fischer <mdf@kernel.org>
Signed-off-by: Nava kishore Manne <nava.manne@xilinx.com>
Link: https://lore.kernel.org/r/20210626155248.5004-2-nava.manne@xilinx.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 15b1383..2db571d 100644 (file)
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -1011,6 +1011,23 @@ int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
 }
 EXPORT_SYMBOL_GPL(zynqmp_pm_set_requirement);
 
+/**
+ * zynqmp_pm_load_pdi - Load and process PDI
+ * @src:       Source device where PDI is located
+ * @address:   PDI src address
+ *
+ * This function provides support to load PDI from linux
+ *
+ * Return: Returns status, either success or error+reason
+ */
+int zynqmp_pm_load_pdi(const u32 src, const u64 address)
+{
+       return zynqmp_pm_invoke_fn(PM_LOAD_PDI, src,
+                                  lower_32_bits(address),
+                                  upper_32_bits(address), 0, NULL);
+}
+EXPORT_SYMBOL_GPL(zynqmp_pm_load_pdi);
+
 /**
  * zynqmp_pm_aes - Access AES hardware to encrypt/decrypt the data using
  * AES-GCM core.

diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 9d1a5c1..56b426f 100644 (file)
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -52,6 +52,10 @@
 #define        ZYNQMP_PM_CAPABILITY_WAKEUP     0x4U
 #define        ZYNQMP_PM_CAPABILITY_UNUSABLE   0x8U
 
+/* Loader commands */
+#define PM_LOAD_PDI    0x701
+#define PDI_SRC_DDR    0xF
+
 /*
  * Firmware FPGA Manager flags
  * XILINX_ZYNQMP_PM_FPGA_FULL: FPGA full reconfiguration
@@ -411,6 +415,7 @@ int zynqmp_pm_pinctrl_get_config(const u32 pin, const u32 param,
                                 u32 *value);
 int zynqmp_pm_pinctrl_set_config(const u32 pin, const u32 param,
                                 u32 value);
+int zynqmp_pm_load_pdi(const u32 src, const u64 address);
 #else
 static inline int zynqmp_pm_get_api_version(u32 *version)
 {
@@ -622,6 +627,11 @@ static inline int zynqmp_pm_pinctrl_set_config(const u32 pin, const u32 param,
 {
        return -ENODEV;
 }
+
+static inline int zynqmp_pm_load_pdi(const u32 src, const u64 address)
+{
+       return -ENODEV;
+}
 #endif
 
 #endif /* __FIRMWARE_ZYNQMP_H__ */