Add a command to debug the IHS FPGA's bus.
Signed-off-by: Mario Six <mario....@gdsys.cc>
---
cmd/Kconfig | 5 +
cmd/Makefile | 2 +
cmd/fpgamap.c | 306 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 313 insertions(+)
create mode 100644 cmd/fpgamap.c
diff --git a/cmd/Kconfig b/cmd/Kconfig
index 136836d146..b669b9d6ac 100644
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -976,6 +976,11 @@ config CMD_USB_MASS_STORAGE
help
USB mass storage support
+config CMD_FPGAMAP
+ bool "fpgamap"
+ help
+ Enable the command "fpgamap" to access register maps of FPGAs.
+
endmenu
diff --git a/cmd/Makefile b/cmd/Makefile
index 9a358e4801..6fcb89e118 100644
--- a/cmd/Makefile
+++ b/cmd/Makefile
@@ -144,6 +144,8 @@ obj-$(CONFIG_CMD_DFU) += dfu.o
obj-$(CONFIG_CMD_GPT) += gpt.o
obj-$(CONFIG_CMD_ETHSW) += ethsw.o
+obj-$(CONFIG_CMD_FPGAMAP) += fpgamap.o
+
# Power
obj-$(CONFIG_CMD_PMIC) += pmic.o
obj-$(CONFIG_CMD_REGULATOR) += regulator.o
diff --git a/cmd/fpgamap.c b/cmd/fpgamap.c
new file mode 100644
index 0000000000..56af558361
--- /dev/null
+++ b/cmd/fpgamap.c
@@ -0,0 +1,306 @@
+/*
+ * (C) Copyright 2017
+ * Mario Six, Guntermann & Drunck GmbH, mario....@gdsys.cc
+ *
+ * based on the fpgad command, which is
+ *
+ * (C) Copyright 2013
+ * Dirk Eibach, Guntermann & Drunck GmbH, dirk.eib...@gdsys.cc
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <command.h>
+#include <console.h>
+#include <fpgamap.h>
+
+static struct udevice *fpgamap_cur;
+static uint dp_last_size;
+static uint dp_last_addr;
+static uint dp_last_length = 0x40;
+
+static void show_fpgamap(struct udevice *fpgamap)
+{
+ struct udevice *dev;
+
+ printf("Bus %d:\t%s", fpgamap->req_seq, fpgamap->name);
+ if (device_active(fpgamap))
+ printf(" (active %d)", fpgamap->seq);
+ printf("\n");
+ for (device_find_first_child(fpgamap, &dev);
+ dev;
+ device_find_next_child(&dev))
+ printf(" %s\n", dev->name);
+}
+
+static int do_fpgamap_show_fpgamap(cmd_tbl_t *cmdtp, int flag, int argc,
+ char * const argv[])
+{
+ if (argc == 1) {
+ /* show all FPGAs */
+ struct udevice *fpgamap;
+ struct uclass *uc;
+ int ret;
+
+ ret = uclass_get(UCLASS_FPGAMAP, &uc);
+ if (ret)
+ return CMD_RET_FAILURE;
+ uclass_foreach_dev(fpgamap, uc)
+ show_fpgamap(fpgamap);
+ } else {
+ int i;
+
+ /* show specific fpgamap */
+ i = simple_strtoul(argv[1], NULL, 10);
+
+ struct udevice *fpgamap;
+ int ret;
+
+ ret = uclass_get_device_by_seq(UCLASS_FPGAMAP, i, &fpgamap);
+ if (ret) {
+ printf("Invalid fpgamap %d: err=%d\n", i, ret);
+ return CMD_RET_FAILURE;
+ }
+ show_fpgamap(fpgamap);
+ }
+
+ return 0;
+}
+
+static int cmd_fpgamap_set_fpgamap_num(unsigned int fpgamapnum)
+{
+ struct udevice *fpgamap;
+ int ret;
+
+ ret = uclass_get_device_by_seq(UCLASS_FPGAMAP, fpgamapnum, &fpgamap);
+ if (ret) {
+ debug("%s: No fpgamap %d\n", __func__, fpgamapnum);
+ return ret;
+ }
+ fpgamap_cur = fpgamap;
+
+ return 0;
+}
+
+static int fpgamap_get_cur_fpgamap(struct udevice **fpgamapp)
+{
+ if (!fpgamap_cur) {
+ puts("No fpgamap selected\n");
+ return -ENODEV;
+ }
+ *fpgamapp = fpgamap_cur;
+
+ return 0;
+}
+
+static int do_fpgamap_fpgamap_num(cmd_tbl_t *cmdtp, int flag, int argc,
+ char * const argv[])
+{
+ int ret = 0;
+ int fpgamap_no;
+
+ if (argc == 1) {
+ /* querying current setting */
+ struct udevice *fpgamap;
+
+ if (!fpgamap_get_cur_fpgamap(&fpgamap))
+ fpgamap_no = fpgamap->seq;
+ else
+ fpgamap_no = -1;
+ printf("Current fpgamap is %d\n", fpgamap_no);
+ } else {
+ fpgamap_no = simple_strtoul(argv[1], NULL, 10);
+ printf("Setting fpgamap to %d\n", fpgamap_no);
+
+ ret = cmd_fpgamap_set_fpgamap_num(fpgamap_no);
+
+ if (ret)
+ printf("Failure changing fpgamap number (%d)\n", ret);
+ }
+
+ return ret ? CMD_RET_FAILURE : 0;
+}
+
+#define DISP_LINE_LEN 16
+
+int do_fpgamap_md(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+ unsigned int k;
+ ulong addr, size, length;
+ int rc = 0;
+ u16 linebuf[DISP_LINE_LEN / sizeof(u16)];
+ ulong nbytes;
+ enum fpgamap_size_t size_param;
+
+ /*
+ * We use the last specified parameters, unless new ones are
+ * entered.
+ */
+ size = dp_last_size;
+ addr = dp_last_addr;
+ length = dp_last_length;
+
+ if (argc < 3)
+ return CMD_RET_USAGE;
+
+ if (!fpgamap_cur) {
+ puts("No fpgamap selected\n");
+ return CMD_RET_FAILURE;
+ }
+
+ if ((flag & CMD_FLAG_REPEAT) == 0) {
+ /*
+ * Size is specified since argc > 3
+ */
+ size = simple_strtoul(argv[1], NULL, 10);
+
+ /*
+ * Address is specified since argc > 3
+ */
+ addr = simple_strtoul(argv[2], NULL, 16);
+
+ /*
+ * If another parameter, it is the length to display.
+ * Length is the number of objects, not number of bytes.
+ */
+ if (argc > 3)
+ length = simple_strtoul(argv[3], NULL, 16);
+ }
+
+ switch (size) {
+ case 1:
+ size_param = FPGAMAP_SIZE_8;
+ break;
+ case 2:
+ size_param = FPGAMAP_SIZE_16;
+ break;
+ case 4:
+ size_param = FPGAMAP_SIZE_32;
+ break;
+ default:
+ printf("Unknown size: %lu\n", size);
+ return CMD_RET_FAILURE;
+ }
+
+ nbytes = length * size;
+ do {
+ ulong linebytes = min(nbytes, (ulong)DISP_LINE_LEN);
+
+ for (k = 0; k < linebytes / size; ++k)
+ rc = fpgamap_read(fpgamap_cur, addr + k * size,
+ &linebuf[k], size_param);
+ if (rc)
+ break;
+
+ print_buffer(addr, (void *)linebuf, size,
+ linebytes / size,
+ DISP_LINE_LEN / size);
+
+ nbytes -= linebytes;
+ addr += linebytes;
+ if (ctrlc()) {
+ rc = 1;
+ break;
+ }
+ } while (nbytes > 0);
+
+ dp_last_size = size;
+ dp_last_addr = addr;
+ dp_last_length = length;
+
+ return rc ? CMD_RET_FAILURE : 0;
+}
+
+static int do_fpgamap_mw(cmd_tbl_t *cmdtp, int flag, int argc,
+ char * const argv[])
+{
+ u16 writeval;
+ ulong size, addr, count;
+ enum fpgamap_size_t size_param;
+
+ if (argc < 4 || argc > 5)
+ return CMD_RET_USAGE;
+
+ if (!fpgamap_cur) {
+ puts("No fpgamap selected\n");
+ return CMD_RET_FAILURE;
+ }
+
+ /* Size is specified since argc > 4 */
+ size = simple_strtoul(argv[1], NULL, 10);
+
+ /* Address is specified since argc > 4 */
+ addr = simple_strtoul(argv[2], NULL, 16);
+
+ /* Get the value to write. */
+ writeval = simple_strtoul(argv[3], NULL, 16);
+
+ /* Count ? */
+ if (argc == 4)
+ count = simple_strtoul(argv[4], NULL, 16);
+ else
+ count = 1;
+
+ switch (size) {
+ case 1:
+ size_param = FPGAMAP_SIZE_8;
+ break;
+ case 2:
+ size_param = FPGAMAP_SIZE_16;
+ break;
+ case 4:
+ size_param = FPGAMAP_SIZE_32;
+ break;
+ default:
+ printf("Unknown size: %lu\n", size);
+ return CMD_RET_FAILURE;
+ }
+
+ while (count-- > 0)
+ fpgamap_write(fpgamap_cur, addr + count * size, &writeval,
+ size_param);
+
+ return 0;
+}
+
+static cmd_tbl_t cmd_fpgamap_sub[] = {
+ U_BOOT_CMD_MKENT(show, 1, 1, do_fpgamap_show_fpgamap, "", ""),
+ U_BOOT_CMD_MKENT(dev, 1, 1, do_fpgamap_fpgamap_num, "", ""),
+ U_BOOT_CMD_MKENT(md, 3, 1, do_fpgamap_md, "", ""),
+ U_BOOT_CMD_MKENT(mw, 4, 1, do_fpgamap_mw, "", ""),
+};
+
+static int do_fpgamap(cmd_tbl_t *cmdtp, int flag, int argc,
+ char * const argv[])
+{
+ cmd_tbl_t *c;
+
+ if (argc < 2)
+ return CMD_RET_USAGE;
+
+ /* Strip off leading 'fpgamap' command argument */
+ argc--;
+ argv++;
+
+ c = find_cmd_tbl(argv[0], &cmd_fpgamap_sub[0],
+ ARRAY_SIZE(cmd_fpgamap_sub));
+
+ if (c)
+ return c->cmd(cmdtp, flag, argc, argv);
+ else
+ return CMD_RET_USAGE;
+}
+
+static char fpgamap_help_text[] =
+ "show - show FPGA register map info\n"
+ "fpgamap dev [dev] - show or set current FPGA register map\n"
+ "fpgamap md size address [# of objects] - read from FPGA register map\n"
+ "fpgamap mw size address value [count] - write to FPGA register map
(fill)\n";
+
+U_BOOT_CMD(
+ fpgamap, 7, 1, do_fpgamap,
+ "FPGA sub-system",
+ fpgamap_help_text
+);
--
2.16.1
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