* (C) Copyright 2012
* Joe Hershberger <joe.hershberger@ni.com>
*
- * SPDX-License-Identifier: GPL-2.0+
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/io.h>
#include <zynqpl.h>
+#include <linux/sizes.h>
#include <asm/arch/hardware.h>
#include <asm/arch/sys_proto.h>
#define DEVCFG_STATUS_DMA_CMD_Q_E 0x40000000
#define DEVCFG_STATUS_DMA_DONE_CNT_MASK 0x30000000
#define DEVCFG_STATUS_PCFG_INIT 0x00000010
+#define DEVCFG_MCTRL_PCAP_LPBK 0x00000010
#define DEVCFG_MCTRL_RFIFO_FLUSH 0x00000002
#define DEVCFG_MCTRL_WFIFO_FLUSH 0x00000001
#endif
#ifndef CONFIG_SYS_FPGA_PROG_TIME
-#define CONFIG_SYS_FPGA_PROG_TIME CONFIG_SYS_HZ /* 1 s */
+#define CONFIG_SYS_FPGA_PROG_TIME (CONFIG_SYS_HZ * 4) /* 4 s */
#endif
-int zynq_info(Xilinx_desc *desc)
+static int zynq_info(xilinx_desc *desc)
{
return FPGA_SUCCESS;
}
}
/* Loop can be huge - support CTRL + C */
if (ctrlc())
- return 0;
+ return NULL;
}
- return 0;
+ return NULL;
}
-
-int zynq_load(Xilinx_desc *desc, const void *buf, size_t bsize)
+static int zynq_dma_transfer(u32 srcbuf, u32 srclen, u32 dstbuf, u32 dstlen)
{
- unsigned long ts; /* Timestamp */
- u32 partialbit = 0;
- u32 i, control, isr_status, status, swap, diff;
- u32 *buf_start;
-
- /* Detect if we are going working with partial or full bitstream */
- if (bsize != desc->size) {
- printf("%s: Working with partial bitstream\n", __func__);
- partialbit = 1;
- }
+ unsigned long ts;
+ u32 isr_status;
- buf_start = check_data((u8 *)buf, bsize, &swap);
- if (!buf_start)
- return FPGA_FAIL;
+ /* Set up the transfer */
+ writel((u32)srcbuf, &devcfg_base->dma_src_addr);
+ writel(dstbuf, &devcfg_base->dma_dst_addr);
+ writel(srclen, &devcfg_base->dma_src_len);
+ writel(dstlen, &devcfg_base->dma_dst_len);
- /* Check if data is postpone from start */
- diff = (u32)buf_start - (u32)buf;
- if (diff) {
- printf("%s: Bitstream is not validated yet (diff %x)\n",
- __func__, diff);
- return FPGA_FAIL;
- }
+ isr_status = readl(&devcfg_base->int_sts);
- if ((u32)buf_start & 0x3) {
- u32 *new_buf = (u32 *)((u32)buf & ~0x3);
+ /* Polling the PCAP_INIT status for Set */
+ ts = get_timer(0);
+ while (!(isr_status & DEVCFG_ISR_DMA_DONE)) {
+ if (isr_status & DEVCFG_ISR_ERROR_FLAGS_MASK) {
+ debug("%s: Error: isr = 0x%08X\n", __func__,
+ isr_status);
+ debug("%s: Write count = 0x%08X\n", __func__,
+ readl(&devcfg_base->write_count));
+ debug("%s: Read count = 0x%08X\n", __func__,
+ readl(&devcfg_base->read_count));
- printf("%s: Align buffer at %x to %x(swap %d)\n", __func__,
- (u32)buf_start, (u32)new_buf, swap);
+ return FPGA_FAIL;
+ }
+ if (get_timer(ts) > CONFIG_SYS_FPGA_PROG_TIME) {
+ printf("%s: Timeout wait for DMA to complete\n",
+ __func__);
+ return FPGA_FAIL;
+ }
+ isr_status = readl(&devcfg_base->int_sts);
+ }
- for (i = 0; i < (bsize/4); i++)
- new_buf[i] = load_word(&buf_start[i], swap);
+ debug("%s: DMA transfer is done\n", __func__);
- swap = SWAP_DONE;
- buf = new_buf;
- } else if (swap != SWAP_DONE) {
- /* For bitstream which are aligned */
- u32 *new_buf = (u32 *)buf;
+ /* Clear out the DMA status */
+ writel(DEVCFG_ISR_DMA_DONE, &devcfg_base->int_sts);
- printf("%s: Bitstream is not swapped(%d) - swap it\n", __func__,
- swap);
+ return FPGA_SUCCESS;
+}
- for (i = 0; i < (bsize/4); i++)
- new_buf[i] = load_word(&buf_start[i], swap);
+static int zynq_dma_xfer_init(u32 partialbit)
+{
+ u32 status, control, isr_status;
+ unsigned long ts;
- swap = SWAP_DONE;
- }
+ /* Clear loopback bit */
+ clrbits_le32(&devcfg_base->mctrl, DEVCFG_MCTRL_PCAP_LPBK);
if (!partialbit) {
zynq_slcr_devcfg_disable();
writel(DEVCFG_STATUS_DMA_DONE_CNT_MASK, &devcfg_base->status);
}
- debug("%s: Source = 0x%08X\n", __func__, (u32)buf);
- debug("%s: Size = %zu\n", __func__, bsize);
+ return FPGA_SUCCESS;
+}
- /* Set up the transfer */
- writel((u32)buf | 1, &devcfg_base->dma_src_addr);
- writel(0xFFFFFFFF, &devcfg_base->dma_dst_addr);
- writel(bsize >> 2, &devcfg_base->dma_src_len);
- writel(0, &devcfg_base->dma_dst_len);
+static u32 *zynq_align_dma_buffer(u32 *buf, u32 len, u32 swap)
+{
+ u32 *new_buf;
+ u32 i;
- isr_status = readl(&devcfg_base->int_sts);
+ if ((u32)buf != ALIGN((u32)buf, ARCH_DMA_MINALIGN)) {
+ new_buf = (u32 *)ALIGN((u32)buf, ARCH_DMA_MINALIGN);
- /* Polling the PCAP_INIT status for Set */
- ts = get_timer(0);
- while (!(isr_status & DEVCFG_ISR_DMA_DONE)) {
- if (isr_status & DEVCFG_ISR_ERROR_FLAGS_MASK) {
- debug("%s: Error: isr = 0x%08X\n", __func__,
- isr_status);
- debug("%s: Write count = 0x%08X\n", __func__,
- readl(&devcfg_base->write_count));
- debug("%s: Read count = 0x%08X\n", __func__,
- readl(&devcfg_base->read_count));
-
- return FPGA_FAIL;
- }
- if (get_timer(ts) > CONFIG_SYS_FPGA_PROG_TIME) {
- printf("%s: Timeout wait for DMA to complete\n",
- __func__);
- return FPGA_FAIL;
+ /*
+ * This might be dangerous but permits to flash if
+ * ARCH_DMA_MINALIGN is greater than header size
+ */
+ if (new_buf > buf) {
+ debug("%s: Aligned buffer is after buffer start\n",
+ __func__);
+ new_buf -= ARCH_DMA_MINALIGN;
}
- isr_status = readl(&devcfg_base->int_sts);
+ printf("%s: Align buffer at %x to %x(swap %d)\n", __func__,
+ (u32)buf, (u32)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);
}
- debug("%s: DMA transfer is done\n", __func__);
+ return buf;
+}
+
+static int zynq_validate_bitstream(xilinx_desc *desc, const void *buf,
+ size_t bsize, u32 blocksize, u32 *swap,
+ u32 *partialbit)
+{
+ u32 *buf_start;
+ u32 diff;
+
+ /* Detect if we are going working with partial or full bitstream */
+ if (bsize != desc->size) {
+ printf("%s: Working with partial bitstream\n", __func__);
+ *partialbit = 1;
+ }
+ buf_start = check_data((u8 *)buf, blocksize, swap);
+
+ if (!buf_start)
+ return FPGA_FAIL;
+ /* Check if data is postpone from start */
+ diff = (u32)buf_start - (u32)buf;
+ if (diff) {
+ printf("%s: Bitstream is not validated yet (diff %x)\n",
+ __func__, diff);
+ return FPGA_FAIL;
+ }
+
+ if ((u32)buf < SZ_1M) {
+ printf("%s: Bitstream has to be placed up to 1MB (%x)\n",
+ __func__, (u32)buf);
+ return FPGA_FAIL;
+ }
+
+ if (zynq_dma_xfer_init(*partialbit))
+ return FPGA_FAIL;
+
+ return 0;
+}
+
+
+static int zynq_load(xilinx_desc *desc, const void *buf, size_t bsize)
+{
+ unsigned long ts; /* Timestamp */
+ u32 partialbit = 0;
+ u32 isr_status, swap;
+
+ /*
+ * send bsize inplace of blocksize as it was not a bitstream
+ * in chunks
+ */
+ if (zynq_validate_bitstream(desc, buf, bsize, bsize, &swap,
+ &partialbit))
+ return FPGA_FAIL;
+
+ buf = zynq_align_dma_buffer((u32 *)buf, bsize, swap);
+
+ debug("%s: Source = 0x%08X\n", __func__, (u32)buf);
+ debug("%s: Size = %zu\n", __func__, bsize);
+
+ /* flush(clean & invalidate) d-cache range buf */
+ flush_dcache_range((u32)buf, (u32)buf +
+ roundup(bsize, ARCH_DMA_MINALIGN));
+
+ if (zynq_dma_transfer((u32)buf | 1, bsize >> 2, 0xffffffff, 0))
+ return FPGA_FAIL;
+
+ isr_status = readl(&devcfg_base->int_sts);
/* Check FPGA configuration completion */
ts = get_timer(0);
while (!(isr_status & DEVCFG_ISR_PCFG_DONE)) {
debug("%s: FPGA config done\n", __func__);
- /* Clear out the DMA status */
- writel(DEVCFG_ISR_DMA_DONE, &devcfg_base->int_sts);
-
if (!partialbit)
zynq_slcr_devcfg_enable();
return FPGA_SUCCESS;
}
-int zynq_dump(Xilinx_desc *desc, const void *buf, size_t bsize)
+static int zynq_dump(xilinx_desc *desc, const void *buf, size_t bsize)
{
return FPGA_FAIL;
}
+
+struct xilinx_fpga_op zynq_op = {
+ .load = zynq_load,
+ .dump = zynq_dump,
+ .info = zynq_info,
+};
projects / karo-tx-uboot.git / blobdiff