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-rw-r--r--drivers/fpga/Kconfig17
-rw-r--r--drivers/fpga/Makefile1
-rw-r--r--drivers/fpga/xilinx.c6
-rw-r--r--drivers/fpga/zynqmppl.c238
4 files changed, 262 insertions, 0 deletions
diff --git a/drivers/fpga/Kconfig b/drivers/fpga/Kconfig
index 1ba02f0982..f3f6bf7f67 100644
--- a/drivers/fpga/Kconfig
+++ b/drivers/fpga/Kconfig
@@ -1,3 +1,20 @@
menu "FPGA support"
+config FPGA
+ bool
+
+config FPGA_XILINX
+ bool "Enable Xilinx FPGA drivers"
+ select FPGA
+ help
+ Enable Xilinx FPGA specific functions which includes bitstream
+ (in BIT format), fpga and device validation.
+
+config FPGA_ZYNQMPPL
+ bool "Enable Xilinx FPGA driver for ZynqMP"
+ depends on FPGA_XILINX
+ help
+ Enable FPGA driver for loading bitstream in BIT and BIN format
+ on Xilinx Zynq UltraScale+ (ZynqMP) device.
+
endmenu
diff --git a/drivers/fpga/Makefile b/drivers/fpga/Makefile
index fec3fecbdf..777706f186 100644
--- a/drivers/fpga/Makefile
+++ b/drivers/fpga/Makefile
@@ -10,6 +10,7 @@ obj-$(CONFIG_FPGA_SPARTAN2) += spartan2.o
obj-$(CONFIG_FPGA_SPARTAN3) += spartan3.o
obj-$(CONFIG_FPGA_VIRTEX2) += virtex2.o
obj-$(CONFIG_FPGA_ZYNQPL) += zynqpl.o
+obj-$(CONFIG_FPGA_ZYNQMPPL) += zynqmppl.o
obj-$(CONFIG_FPGA_XILINX) += xilinx.o
obj-$(CONFIG_FPGA_LATTICE) += ivm_core.o lattice.o
ifdef CONFIG_FPGA_ALTERA
diff --git a/drivers/fpga/xilinx.c b/drivers/fpga/xilinx.c
index d459a2f7a5..2cd0104d8b 100644
--- a/drivers/fpga/xilinx.c
+++ b/drivers/fpga/xilinx.c
@@ -199,6 +199,9 @@ int xilinx_info(xilinx_desc *desc)
case xilinx_zynq:
printf("Zynq PL\n");
break;
+ case xilinx_zynqmp:
+ printf("ZynqMP PL\n");
+ break;
/* Add new family types here */
default:
printf ("Unknown family type, %d\n", desc->family);
@@ -227,6 +230,9 @@ int xilinx_info(xilinx_desc *desc)
case devcfg:
printf("Device configuration interface (Zynq)\n");
break;
+ case csu_dma:
+ printf("csu_dma configuration interface (ZynqMP)\n");
+ break;
/* Add new interface types here */
default:
printf ("Unsupported interface type, %d\n", desc->iface);
diff --git a/drivers/fpga/zynqmppl.c b/drivers/fpga/zynqmppl.c
new file mode 100644
index 0000000000..23039c3eb2
--- /dev/null
+++ b/drivers/fpga/zynqmppl.c
@@ -0,0 +1,238 @@
+/*
+ * (C) Copyright 2015 - 2016, Xilinx, Inc,
+ * Michal Simek <michal.simek@xilinx.com>
+ * Siva Durga Prasad <siva.durga.paladugu@xilinx.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ */
+
+#include <console.h>
+#include <common.h>
+#include <zynqmppl.h>
+#include <linux/sizes.h>
+
+#define DUMMY_WORD 0xffffffff
+
+/* Xilinx binary format header */
+static const u32 bin_format[] = {
+ DUMMY_WORD, /* Dummy words */
+ DUMMY_WORD,
+ DUMMY_WORD,
+ DUMMY_WORD,
+ DUMMY_WORD,
+ DUMMY_WORD,
+ DUMMY_WORD,
+ DUMMY_WORD,
+ DUMMY_WORD,
+ DUMMY_WORD,
+ DUMMY_WORD,
+ DUMMY_WORD,
+ DUMMY_WORD,
+ DUMMY_WORD,
+ DUMMY_WORD,
+ DUMMY_WORD,
+ 0x000000bb, /* Sync word */
+ 0x11220044, /* Sync word */
+ DUMMY_WORD,
+ DUMMY_WORD,
+ 0xaa995566, /* Sync word */
+};
+
+#define SWAP_NO 1
+#define SWAP_DONE 2
+
+/*
+ * Load the whole word from unaligned buffer
+ * Keep in your mind that it is byte loading on little-endian system
+ */
+static u32 load_word(const void *buf, u32 swap)
+{
+ u32 word = 0;
+ u8 *bitc = (u8 *)buf;
+ int p;
+
+ if (swap == SWAP_NO) {
+ for (p = 0; p < 4; p++) {
+ word <<= 8;
+ word |= bitc[p];
+ }
+ } else {
+ for (p = 3; p >= 0; p--) {
+ word <<= 8;
+ word |= bitc[p];
+ }
+ }
+
+ return word;
+}
+
+static u32 check_header(const void *buf)
+{
+ u32 i, pattern;
+ int swap = SWAP_NO;
+ u32 *test = (u32 *)buf;
+
+ debug("%s: Let's check bitstream header\n", __func__);
+
+ /* Checking that passing bin is not a bitstream */
+ for (i = 0; i < ARRAY_SIZE(bin_format); i++) {
+ pattern = load_word(&test[i], swap);
+
+ /*
+ * Bitstreams in binary format are swapped
+ * compare to regular bistream.
+ * Do not swap dummy word but if swap is done assume
+ * that parsing buffer is binary format
+ */
+ if ((__swab32(pattern) != DUMMY_WORD) &&
+ (__swab32(pattern) == bin_format[i])) {
+ swap = SWAP_DONE;
+ debug("%s: data swapped - let's swap\n", __func__);
+ }
+
+ debug("%s: %d/%px: pattern %x/%x bin_format\n", __func__, i,
+ &test[i], pattern, bin_format[i]);
+ }
+ debug("%s: Found bitstream header at %px %s swapinng\n", __func__,
+ buf, swap == SWAP_NO ? "without" : "with");
+
+ return swap;
+}
+
+static void *check_data(u8 *buf, size_t bsize, u32 *swap)
+{
+ u32 word, p = 0; /* possition */
+
+ /* Because buf doesn't need to be aligned let's read it by chars */
+ for (p = 0; p < bsize; p++) {
+ word = load_word(&buf[p], SWAP_NO);
+ debug("%s: word %x %x/%px\n", __func__, word, p, &buf[p]);
+
+ /* Find the first bitstream dummy word */
+ if (word == DUMMY_WORD) {
+ debug("%s: Found dummy word at position %x/%px\n",
+ __func__, p, &buf[p]);
+ *swap = check_header(&buf[p]);
+ if (*swap) {
+ /* FIXME add full bitstream checking here */
+ return &buf[p];
+ }
+ }
+ /* Loop can be huge - support CTRL + C */
+ if (ctrlc())
+ return NULL;
+ }
+ return NULL;
+}
+
+static ulong zynqmp_align_dma_buffer(u32 *buf, u32 len, u32 swap)
+{
+ u32 *new_buf;
+ u32 i;
+
+ if ((ulong)buf != ALIGN((ulong)buf, ARCH_DMA_MINALIGN)) {
+ new_buf = (u32 *)ALIGN((ulong)buf, ARCH_DMA_MINALIGN);
+
+ /*
+ * This might be dangerous but permits to flash if
+ * ARCH_DMA_MINALIGN is greater than header size
+ */
+ if (new_buf > (u32 *)buf) {
+ debug("%s: Aligned buffer is after buffer start\n",
+ __func__);
+ new_buf -= ARCH_DMA_MINALIGN;
+ }
+ printf("%s: Align buffer at %px to %px(swap %d)\n", __func__,
+ buf, new_buf, swap);
+
+ for (i = 0; i < (len/4); i++)
+ new_buf[i] = load_word(&buf[i], swap);
+
+ buf = new_buf;
+ } else if (swap != SWAP_DONE) {
+ /* For bitstream which are aligned */
+ u32 *new_buf = (u32 *)buf;
+
+ printf("%s: Bitstream is not swapped(%d) - swap it\n", __func__,
+ swap);
+
+ for (i = 0; i < (len/4); i++)
+ new_buf[i] = load_word(&buf[i], swap);
+ }
+
+ return (ulong)buf;
+}
+
+static int zynqmp_validate_bitstream(xilinx_desc *desc, const void *buf,
+ size_t bsize, u32 blocksize, u32 *swap)
+{
+ ulong *buf_start;
+ ulong diff;
+
+ buf_start = check_data((u8 *)buf, blocksize, swap);
+
+ if (!buf_start)
+ return FPGA_FAIL;
+
+ /* Check if data is postpone from start */
+ diff = (ulong)buf_start - (ulong)buf;
+ if (diff) {
+ printf("%s: Bitstream is not validated yet (diff %lx)\n",
+ __func__, diff);
+ return FPGA_FAIL;
+ }
+
+ if ((ulong)buf < SZ_1M) {
+ printf("%s: Bitstream has to be placed up to 1MB (%px)\n",
+ __func__, buf);
+ return FPGA_FAIL;
+ }
+
+ return 0;
+}
+
+static int invoke_smc(ulong id, ulong reg0, ulong reg1, ulong reg2)
+{
+ struct pt_regs regs;
+ regs.regs[0] = id;
+ regs.regs[1] = reg0;
+ regs.regs[2] = reg1;
+ regs.regs[3] = reg2;
+
+ smc_call(&regs);
+
+ return regs.regs[0];
+}
+
+static int zynqmp_load(xilinx_desc *desc, const void *buf, size_t bsize,
+ bitstream_type bstype)
+{
+ u32 swap;
+ ulong bin_buf, flags;
+ int ret;
+
+ if (zynqmp_validate_bitstream(desc, buf, bsize, bsize, &swap))
+ return FPGA_FAIL;
+
+ bin_buf = zynqmp_align_dma_buffer((u32 *)buf, bsize, swap);
+
+ debug("%s called!\n", __func__);
+ flush_dcache_range(bin_buf, bin_buf + bsize);
+
+ if (bsize % 4)
+ bsize = bsize / 4 + 1;
+ else
+ bsize = bsize / 4;
+
+ flags = (u32)bsize | ((u64)bstype << 32);
+
+ ret = invoke_smc(ZYNQMP_SIP_SVC_PM_FPGA_LOAD, bin_buf, flags, 0);
+ if (ret)
+ debug("PL FPGA LOAD fail\n");
+
+ return ret;
+}
+
+struct xilinx_fpga_op zynqmp_op = {
+ .load = zynqmp_load,
+};
generated by cgit v1.2.3 (git 2.0.4) at 2024-06-21 10:05:40 +0000