emdk->emsdp: Rename board
Real marketing name of the board was recently updated so
to accommodate that change renaming the board and all
related to it.
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
diff --git a/board/synopsys/emsdp/Kconfig b/board/synopsys/emsdp/Kconfig
new file mode 100644
index 0000000..8228bb5
--- /dev/null
+++ b/board/synopsys/emsdp/Kconfig
@@ -0,0 +1,12 @@
+if TARGET_EMSDP
+
+config SYS_BOARD
+ default "emsdp"
+
+config SYS_VENDOR
+ default "synopsys"
+
+config SYS_CONFIG_NAME
+ default "emsdp"
+
+endif
diff --git a/board/synopsys/emsdp/MAINTAINERS b/board/synopsys/emsdp/MAINTAINERS
new file mode 100644
index 0000000..6404013
--- /dev/null
+++ b/board/synopsys/emsdp/MAINTAINERS
@@ -0,0 +1,6 @@
+EM DEVELOPMENT KIT BOARD
+M: Alexey Brodkin <abrodkin@synopsys.com>
+S: Maintained
+F: arch/arc/dts/emsdp.dts
+F: board/synopsys/emsdp/
+F: configs/emsdp_defconfig
diff --git a/board/synopsys/emsdp/Makefile b/board/synopsys/emsdp/Makefile
new file mode 100644
index 0000000..733a48c
--- /dev/null
+++ b/board/synopsys/emsdp/Makefile
@@ -0,0 +1,7 @@
+#
+# Copyright (C) 2018 Synopsys, Inc. All rights reserved.
+#
+# SPDX-License-Identifier: GPL-2.0+
+#
+
+obj-y += emsdp.o
diff --git a/board/synopsys/emsdp/README b/board/synopsys/emsdp/README
new file mode 100644
index 0000000..034062e
--- /dev/null
+++ b/board/synopsys/emsdp/README
@@ -0,0 +1,83 @@
+================================================================================
+Useful notes on bulding and using of U-Boot on
+ARC EM Software Development Platform (AKA EMSDP)
+================================================================================
+
+ BOARD OVERVIEW
+
+ The DesignWare ARC EM Software Development Platform is FPGA-bases platform
+ for rapid software development on the ARC EM family of processors.
+
+ Since this board is based on FPGA it's possible to load and use different
+ versions of ARC EM CPUs. U-Boot is built to be run on the simplest
+ possible configuration which means the same one binary will work on more
+ advanced configurations as well.
+
+ The board has the following features useful for U-Boot:
+ * On-board 2-channel FTDI TTL-to-USB converter
+ - The first channel is used for serial debug port (which makes it possible
+ to use a serial connection on pretty much any host machine be it
+ Windows, Linux or Mac).
+ On Linux machine typucally FTDI serial port would be /dev/ttyUSB0.
+ There's no HW flow-control and baud-rate is 115200.
+
+ - The second channel is used for built-in Digilent USB JTAG probe.
+ That means no extra hardware is required to access ARC core from a
+ debugger on development host. Both proprietary MetaWare debugger and
+ open source OpenOCD + GDB client are supported.
+
+ - Also with help of this FTDI chip it is possible to reset entire
+ board with help of a special `rff-ftdi-reset` utility, see:
+ https://github.com/foss-for-synopsys-dwc-arc-processors/rff-ftdi-reset
+
+ * Micro SD-card slot
+ - U-Boot expects to see the very first partition on the card formatted as
+ FAT file-system and uses it for keeping its environment in `uboot.env`
+ file. Note uboot.env is not just a text file but it is auto-generated
+ file created by U-Boot on invocation of `saveenv` command.
+ It contains a checksum which makes this saved environment invalid in
+ case of maual modification.
+
+ - There might be more useful files on that first FAT partition like
+ user applications, data files etc.
+
+ * 256 KiB of "ROM"
+ - This so-called "ROM" is a part of FPGA image and even though it
+ might be unlocked for writes its initial content will be restored
+ on the next power-on.
+
+
+ BUILDING U-BOOT
+
+ 1. Configure U-Boot:
+ ------------------------->8----------------------
+ make emsdp_defconfig
+ ------------------------->8----------------------
+
+ 2. To build Elf file (for example to be used with host debugger via JTAG
+ connection to the target board):
+ ------------------------->8----------------------
+ make mdbtrick
+ ------------------------->8----------------------
+
+ This will produce `u-boot` Elf file.
+
+ 3. To build binary image to be put in "ROM":
+ ------------------------->8----------------------
+ make u-boot.bin
+ ------------------------->8----------------------
+
+
+ EXECUTING U-BOOT
+
+ 1. The EMSDP board is supposed to auto-start U-Boot image stored in ROM on
+ power-on. For that make sure VCCIO DIP-switches are all in "off" state.
+
+ 2. Though it is possible to load U-Boot as a simple Elf file via JTAG right
+ in "ROM" and start it from the debugger. One important note here we first
+ need to enable writes into "ROM" by writing 1 to 0xf0001000.
+
+ 2.1. In case of proprietary MetaWare debugger run:
+ ------------------------->8----------------------
+ mdb -dll=opxdarc.so -OK -preloadexec="eval *(int*)0xf0001000=0" u-boot
+ ------------------------->8----------------------
diff --git a/board/synopsys/emsdp/emsdp.c b/board/synopsys/emsdp/emsdp.c
new file mode 100644
index 0000000..b5ec7f1
--- /dev/null
+++ b/board/synopsys/emsdp/emsdp.c
@@ -0,0 +1,99 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018 Synopsys, Inc. All rights reserved.
+ */
+
+#include <common.h>
+#include <dwmmc.h>
+#include <malloc.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define ARC_PERIPHERAL_BASE 0xF0000000
+#define SDIO_BASE (ARC_PERIPHERAL_BASE + 0x10000)
+
+int board_mmc_init(bd_t *bis)
+{
+ struct dwmci_host *host = NULL;
+
+ host = malloc(sizeof(struct dwmci_host));
+ if (!host) {
+ printf("dwmci_host malloc fail!\n");
+ return 1;
+ }
+
+ memset(host, 0, sizeof(struct dwmci_host));
+ host->name = "Synopsys Mobile storage";
+ host->ioaddr = (void *)SDIO_BASE;
+ host->buswidth = 4;
+ host->dev_index = 0;
+ host->bus_hz = 50000000;
+
+ add_dwmci(host, host->bus_hz / 2, 400000);
+
+ return 0;
+}
+
+int board_mmc_getcd(struct mmc *mmc)
+{
+ struct dwmci_host *host = mmc->priv;
+
+ return !(dwmci_readl(host, DWMCI_CDETECT) & 1);
+}
+
+#define CREG_BASE 0xF0001000
+#define CREG_BOOT_OFFSET 0
+#define CREG_BOOT_WP_OFFSET 8
+
+#define CGU_BASE 0xF0000000
+#define CGU_IP_SW_RESET 0x0FF0
+
+void reset_cpu(ulong addr)
+{
+ writel(1, (u32 *)(CGU_BASE + CGU_IP_SW_RESET));
+ while (1)
+ ; /* loop forever till reset */
+}
+
+static int do_emsdp_rom(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
+{
+ u32 creg_boot = readl((u32 *)(CREG_BASE + CREG_BOOT_OFFSET));
+
+ if (!strcmp(argv[1], "unlock"))
+ creg_boot &= ~BIT(CREG_BOOT_WP_OFFSET);
+ else if (!strcmp(argv[1], "lock"))
+ creg_boot |= BIT(CREG_BOOT_WP_OFFSET);
+ else
+ return CMD_RET_USAGE;
+
+ writel(creg_boot, (u32 *)(CREG_BASE + CREG_BOOT_OFFSET));
+
+ return CMD_RET_SUCCESS;
+}
+
+cmd_tbl_t cmd_emsdp[] = {
+ U_BOOT_CMD_MKENT(rom, 2, 0, do_emsdp_rom, "", ""),
+};
+
+static int do_emsdp(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
+{
+ cmd_tbl_t *c;
+
+ c = find_cmd_tbl(argv[1], cmd_emsdp, ARRAY_SIZE(cmd_emsdp));
+
+ /* Strip off leading 'emsdp' command */
+ argc--;
+ argv++;
+
+ if (c == NULL || argc > c->maxargs)
+ return CMD_RET_USAGE;
+
+ return c->cmd(cmdtp, flag, argc, argv);
+}
+
+U_BOOT_CMD(
+ emsdp, CONFIG_SYS_MAXARGS, 0, do_emsdp,
+ "Synopsys EMSDP specific commands",
+ "rom unlock - Unlock non-volatile memory for writing\n"
+ "emsdp rom lock - Lock non-volatile memory to prevent writing\n"
+);