[PATCH v2 1/3] drivers: firmware: Add PDI load API support
From: Nava kishore Manne <hidden>
Date: 2021-02-11 06:14:04
Also in:
linux-arm-kernel, linux-fpga, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
This patch adds load PDI API support to enable PDI/partial loading from
linux. Programmable Device Image (PDI) is combination of headers, images
and bitstream files to be loaded. Partial PDI is partial set of image/
images to be loaded.
Signed-off-by: Nava kishore Manne <redacted>
---
Changes for v2:
-Updated API Doc and commit msg.
No functional changes.
drivers/firmware/xilinx/zynqmp.c | 17 +++++++++++++++++
include/linux/firmware/xlnx-zynqmp.h | 9 +++++++++
2 files changed, 26 insertions(+)
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 7eb9958662dd..9ee02655db89 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c@@ -897,6 +897,23 @@ 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 2a0da841c942..87114ee645b1 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h@@ -52,6 +52,9 @@ #define ZYNQMP_PM_CAPABILITY_WAKEUP 0x4U #define ZYNQMP_PM_CAPABILITY_UNUSABLE 0x8U +/* Loader commands */ +#define PM_LOAD_PDI 0x701 + /* * Firmware FPGA Manager flags * XILINX_ZYNQMP_PM_FPGA_FULL: FPGA full reconfiguration
@@ -354,6 +357,7 @@ int zynqmp_pm_write_pggs(u32 index, u32 value); int zynqmp_pm_read_pggs(u32 index, u32 *value); int zynqmp_pm_system_shutdown(const u32 type, const u32 subtype); int zynqmp_pm_set_boot_health_status(u32 value); +int zynqmp_pm_load_pdi(const u32 src, const u64 address); #else static inline struct zynqmp_eemi_ops *zynqmp_pm_get_eemi_ops(void) {
@@ -538,6 +542,11 @@ static inline int zynqmp_pm_set_boot_health_status(u32 value) { return -ENODEV; } + +static inline int zynqmp_pm_load_pdi(const u32 src, const u64 address) +{ + return -ENODEV; +} #endif #endif /* __FIRMWARE_ZYNQMP_H__ */
--
2.18.0