Add supporting new compatible string "u-boot,zynqmp-fpga-ddrauth" to handle loading authenticated images (DDR).
Based on solution by Jorge Ramirez-Ortiz jorge@foundries.io Signed-off-by: Oleksandr Suvorov oleksandr.suvorov@foundries.io Tested-by: Ricardo Salveti ricardo@foundries.io ---
(no changes since v11)
Changes in v11: - Fix treating an incoming FPGA image with empty flags parameter as legacy.
Changes in v10: - Support DDR images only if FPGA_LOAD_SECURE enabled.
boot/Kconfig | 4 ++-- doc/uImage.FIT/source_file_format.txt | 5 ++++- drivers/fpga/zynqmppl.c | 31 ++++++++++++++++++++++----- include/xilinx.h | 1 + include/zynqmppl.h | 4 ++++ 5 files changed, 37 insertions(+), 8 deletions(-)
diff --git a/boot/Kconfig b/boot/Kconfig index 17438b566d5..59d0c65c944 100644 --- a/boot/Kconfig +++ b/boot/Kconfig @@ -210,8 +210,8 @@ config SPL_LOAD_FIT 1. "loadables" images, other than FDTs, which do not have a "load" property will not be loaded. This limitation also applies to FPGA images with the correct "compatible" string. - 2. For FPGA images, only the "compatible" = "u-boot,fpga-legacy" - loading method is supported. + 2. For FPGA images, the supported "compatible" list is in the + doc/uImage.FIT/source_file_format.txt. 3. FDTs are only loaded for images with an "os" property of "u-boot". "linux" images are also supported with Falcon boot mode.
diff --git a/doc/uImage.FIT/source_file_format.txt b/doc/uImage.FIT/source_file_format.txt index f93ac6d1c7b..461e2af2a84 100644 --- a/doc/uImage.FIT/source_file_format.txt +++ b/doc/uImage.FIT/source_file_format.txt @@ -184,7 +184,10 @@ the '/images' node should have the following layout: Mandatory for types: "firmware", and "kernel". - compatible : compatible method for loading image. Mandatory for types: "fpga", and images that do not specify a load address. - To use the generic fpga loading routine, use "u-boot,fpga-legacy". + Supported compatible methods: + "u-boot,fpga-legacy" - the generic fpga loading routine. + "u-boot,zynqmp-fpga-ddrauth" - signed non-encrypted FPGA bitstream for + Xilinx Zynq UltraScale+ (ZymqMP) device.
Optional nodes: - hash-1 : Each hash sub-node represents separate hash or checksum diff --git a/drivers/fpga/zynqmppl.c b/drivers/fpga/zynqmppl.c index feaf34fff11..200076c8c6a 100644 --- a/drivers/fpga/zynqmppl.c +++ b/drivers/fpga/zynqmppl.c @@ -9,6 +9,7 @@ #include <common.h> #include <compiler.h> #include <cpu_func.h> +#include <fpga.h> #include <log.h> #include <zynqmppl.h> #include <zynqmp_firmware.h> @@ -202,9 +203,12 @@ static int zynqmp_validate_bitstream(xilinx_desc *desc, const void *buf, #if CONFIG_IS_ENABLED(FPGA_LOAD_SECURE) static int zynqmp_check_compatible(xilinx_desc *desc, int flags) { - /* If no flags set, the image is legacy */ + /* + * If no flags set, the image may be legacy, but we need to + * signal caller this situation with specific error code. + */ if (!flags) - return 0; + return -ENODATA;
/* For legacy bitstream images no need for other methods exist */ if ((flags & desc->flags) && flags == FPGA_LEGACY) @@ -217,7 +221,7 @@ static int zynqmp_check_compatible(xilinx_desc *desc, int flags) if (desc->operations->loads && (flags & desc->flags)) return 0;
- return FPGA_FAIL; + return -ENODEV; } #endif
@@ -231,8 +235,9 @@ static int zynqmp_load(xilinx_desc *desc, const void *buf, size_t bsize, u32 buf_lo, buf_hi; u32 bsize_req = (u32)bsize; u32 ret_payload[PAYLOAD_ARG_CNT]; - #if CONFIG_IS_ENABLED(FPGA_LOAD_SECURE) + struct fpga_secure_info info = { 0 }; + ret = zynqmp_check_compatible(desc, flags); if (ret) { if (ret != -ENODATA) { @@ -242,6 +247,19 @@ static int zynqmp_load(xilinx_desc *desc, const void *buf, size_t bsize, /* If flags is not set, the image treats as legacy */ flags = FPGA_LEGACY; } + + switch (flags) { + case FPGA_LEGACY: + break; /* Handle the legacy image later in this function */ + case FPGA_XILINX_ZYNQMP_DDRAUTH: + /* DDR authentication */ + info.authflag = ZYNQMP_FPGA_AUTH_DDR; + info.encflag = FPGA_NO_ENC_OR_NO_AUTH; + return desc->operations->loads(desc, buf, bsize, &info); + default: + printf("Unsupported bitstream type %d\n", flags); + return FPGA_FAIL; + } #endif
if (zynqmp_firmware_version() <= PMUFW_V1_0) { @@ -337,7 +355,10 @@ static int __maybe_unused zynqmp_str2flag(xilinx_desc *desc, const char *str) { if (!strncmp(str, "u-boot,fpga-legacy", 18)) return FPGA_LEGACY; - +#if CONFIG_IS_ENABLED(FPGA_LOAD_SECURE) + if (!strncmp(str, "u-boot,zynqmp-fpga-ddrauth", 26)) + return FPGA_XILINX_ZYNQMP_DDRAUTH; +#endif return 0; }
diff --git a/include/xilinx.h b/include/xilinx.h index e5f6db33fa2..97ee12cec42 100644 --- a/include/xilinx.h +++ b/include/xilinx.h @@ -39,6 +39,7 @@ typedef enum { /* typedef xilinx_family */
/* FPGA bitstream supported types */ #define FPGA_LEGACY BIT(0) +#define FPGA_XILINX_ZYNQMP_DDRAUTH BIT(1)
typedef struct { /* typedef xilinx_desc */ xilinx_family family; /* part type */ diff --git a/include/zynqmppl.h b/include/zynqmppl.h index 8401a850afb..87ccd2f394c 100644 --- a/include/zynqmppl.h +++ b/include/zynqmppl.h @@ -25,6 +25,10 @@
extern struct xilinx_fpga_op zynqmp_op;
+#if CONFIG_IS_ENABLED(FPGA_LOAD_SECURE) +#define ZYNQMP_FPGA_FLAGS (FPGA_LEGACY | FPGA_XILINX_ZYNQMP_DDRAUTH) +#else #define ZYNQMP_FPGA_FLAGS (FPGA_LEGACY) +#endif
#endif /* _ZYNQMPPL_H_ */