4 files changed, 393 insertions, 0 deletions

diff --git a/qemu/roms/u-boot/board/spear/x600/Makefile b/qemu/roms/u-boot/board/spear/x600/Makefile
new file mode 100644
index 000000000..18d3dd2e6
--- /dev/null
+++ b/qemu/roms/u-boot/board/spear/x600/Makefile
@@ -0,0 +1,13 @@
+#
+# (C) Copyright 2000-2004
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+ifdef CONFIG_SPL_BUILD
+# necessary to create built-in.o
+obj- := __dummy__.o
+else
+obj-y	:= fpga.o x600.o
+endif
diff --git a/qemu/roms/u-boot/board/spear/x600/fpga.c b/qemu/roms/u-boot/board/spear/x600/fpga.c
new file mode 100644
index 000000000..b256222e1
--- /dev/null
+++ b/qemu/roms/u-boot/board/spear/x600/fpga.c
@@ -0,0 +1,264 @@
+/*
+ * Copyright (C) 2012 Stefan Roese <sr@denx.de>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <spartan3.h>
+#include <command.h>
+#include <asm/gpio.h>
+#include <asm/io.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/spr_misc.h>
+#include <asm/arch/spr_ssp.h>
+
+/*
+ * FPGA program pin configuration on X600:
+ *
+ * Only PROG and DONE are connected to GPIOs. INIT is not connected to the
+ * SoC at all. And CLOCK and DATA are connected to the SSP2 port. We use
+ * 16bit serial writes via this SSP port to write the data bits into the
+ * FPGA.
+ */
+#define CONFIG_SYS_FPGA_PROG		2
+#define CONFIG_SYS_FPGA_DONE		3
+
+/*
+ * Set the active-low FPGA reset signal.
+ */
+static void fpga_reset(int assert)
+{
+	/*
+	 * On x600 we have no means to toggle the FPGA reset signal
+	 */
+	debug("%s:%d: RESET (%d)\n", __func__, __LINE__, assert);
+}
+
+/*
+ * Set the FPGA's active-low SelectMap program line to the specified level
+ */
+static int fpga_pgm_fn(int assert, int flush, int cookie)
+{
+	debug("%s:%d: FPGA PROG (%d)\n", __func__, __LINE__, assert);
+
+	gpio_set_value(CONFIG_SYS_FPGA_PROG, assert);
+
+	return assert;
+}
+
+/*
+ * Test the state of the active-low FPGA INIT line.  Return 1 on INIT
+ * asserted (low).
+ */
+static int fpga_init_fn(int cookie)
+{
+	static int state;
+
+	debug("%s:%d: init (state=%d)\n", __func__, __LINE__, state);
+
+	/*
+	 * On x600, the FPGA INIT signal is not connected to the SoC.
+	 * We can't read the INIT status. Let's return the "correct"
+	 * INIT signal state generated via a local state-machine.
+	 */
+	if (++state == 1) {
+		return 1;
+	} else {
+		state = 0;
+		return 0;
+	}
+}
+
+/*
+ * Test the state of the active-high FPGA DONE pin
+ */
+static int fpga_done_fn(int cookie)
+{
+	struct ssp_regs *ssp = (struct ssp_regs *)CONFIG_SSP2_BASE;
+
+	/*
+	 * Wait for Tx-FIFO to become empty before looking for DONE
+	 */
+	while (!(readl(&ssp->sspsr) & SSPSR_TFE))
+		;
+
+	if (gpio_get_value(CONFIG_SYS_FPGA_DONE))
+		return 1;
+	else
+		return 0;
+}
+
+/*
+ * FPGA pre-configuration function. Just make sure that
+ * FPGA reset is asserted to keep the FPGA from starting up after
+ * configuration.
+ */
+static int fpga_pre_config_fn(int cookie)
+{
+	debug("%s:%d: FPGA pre-configuration\n", __func__, __LINE__);
+	fpga_reset(true);
+
+	return 0;
+}
+
+/*
+ * FPGA post configuration function. Blip the FPGA reset line and then see if
+ * the FPGA appears to be running.
+ */
+static int fpga_post_config_fn(int cookie)
+{
+	int rc = 0;
+
+	debug("%s:%d: FPGA post configuration\n", __func__, __LINE__);
+
+	fpga_reset(true);
+	udelay(100);
+	fpga_reset(false);
+	udelay(100);
+
+	return rc;
+}
+
+static int fpga_clk_fn(int assert_clk, int flush, int cookie)
+{
+	/*
+	 * No dedicated clock signal on x600 (data & clock generated)
+	 * in SSP interface. So we don't have to do anything here.
+	 */
+	return assert_clk;
+}
+
+static int fpga_wr_fn(int assert_write, int flush, int cookie)
+{
+	struct ssp_regs *ssp = (struct ssp_regs *)CONFIG_SSP2_BASE;
+	static int count;
+	static u16 data;
+
+	/*
+	 * First collect 16 bits of data
+	 */
+	data = data << 1;
+	if (assert_write)
+		data |= 1;
+
+	/*
+	 * If 16 bits are not available, return for more bits
+	 */
+	count++;
+	if (count != 16)
+		return assert_write;
+
+	count = 0;
+
+	/*
+	 * Wait for Tx-FIFO to become ready
+	 */
+	while (!(readl(&ssp->sspsr) & SSPSR_TNF))
+		;
+
+	/* Send 16 bits to FPGA via SSP bus */
+	writel(data, &ssp->sspdr);
+
+	return assert_write;
+}
+
+static xilinx_spartan3_slave_serial_fns x600_fpga_fns = {
+	fpga_pre_config_fn,
+	fpga_pgm_fn,
+	fpga_clk_fn,
+	fpga_init_fn,
+	fpga_done_fn,
+	fpga_wr_fn,
+	fpga_post_config_fn,
+};
+
+static xilinx_desc fpga[CONFIG_FPGA_COUNT] = {
+	XILINX_XC3S1200E_DESC(slave_serial, &x600_fpga_fns, 0)
+};
+
+/*
+ * Initialize the SelectMap interface.  We assume that the mode and the
+ * initial state of all of the port pins have already been set!
+ */
+static void fpga_serialslave_init(void)
+{
+	debug("%s:%d: Initialize serial slave interface\n", __func__, __LINE__);
+	fpga_pgm_fn(false, false, 0);	/* make sure program pin is inactive */
+}
+
+static int expi_setup(int freq)
+{
+	struct misc_regs *misc = (struct misc_regs *)CONFIG_SPEAR_MISCBASE;
+	int pll2_m, pll2_n, pll2_p, expi_x, expi_y;
+
+	pll2_m = (freq * 2) / 1000;
+	pll2_n = 15;
+	pll2_p = 1;
+	expi_x = 1;
+	expi_y = 2;
+
+	/*
+	 * Disable reset, Low compression, Disable retiming, Enable Expi,
+	 * Enable soft reset, DMA, PLL2, Internal
+	 */
+	writel(EXPI_CLK_CFG_LOW_COMPR | EXPI_CLK_CFG_CLK_EN | EXPI_CLK_CFG_RST |
+	       EXPI_CLK_SYNT_EN | EXPI_CLK_CFG_SEL_PLL2 |
+	       EXPI_CLK_CFG_INT_CLK_EN | (expi_y << 16) | (expi_x << 24),
+	       &misc->expi_clk_cfg);
+
+	/*
+	 * 6 uA, Internal feedback, 1st order, Non-dithered, Sample Parameters,
+	 * Enable PLL2, Disable reset
+	 */
+	writel((pll2_m << 24) | (pll2_p << 8) | (pll2_n), &misc->pll2_frq);
+	writel(PLL2_CNTL_6UA | PLL2_CNTL_SAMPLE | PLL2_CNTL_ENABLE |
+	       PLL2_CNTL_RESETN | PLL2_CNTL_LOCK, &misc->pll2_cntl);
+
+	/*
+	 * Disable soft reset
+	 */
+	clrbits_le32(&misc->expi_clk_cfg, EXPI_CLK_CFG_RST);
+
+	return 0;
+}
+
+/*
+ * Initialize the fpga
+ */
+int x600_init_fpga(void)
+{
+	struct ssp_regs *ssp = (struct ssp_regs *)CONFIG_SSP2_BASE;
+	struct misc_regs *misc = (struct misc_regs *)CONFIG_SPEAR_MISCBASE;
+
+	/* Enable SSP2 clock */
+	writel(readl(&misc->periph1_clken) | MISC_SSP2ENB | MISC_GPIO4ENB,
+	       &misc->periph1_clken);
+
+	/* Set EXPI clock to 45 MHz */
+	expi_setup(45000);
+
+	/* Configure GPIO directions */
+	gpio_direction_output(CONFIG_SYS_FPGA_PROG, 0);
+	gpio_direction_input(CONFIG_SYS_FPGA_DONE);
+
+	writel(SSPCR0_DSS_16BITS, &ssp->sspcr0);
+	writel(SSPCR1_SSE, &ssp->sspcr1);
+
+	/*
+	 * Set lowest prescale divisor value (CPSDVSR) of 2 for max download
+	 * speed.
+	 *
+	 * Actual data clock rate is: 80MHz / (CPSDVSR * (SCR + 1))
+	 * With CPSDVSR at 2 and SCR at 0, the maximume clock rate is 40MHz.
+	 */
+	writel(2, &ssp->sspcpsr);
+
+	fpga_init();
+	fpga_serialslave_init();
+
+	debug("%s:%d: Adding fpga 0\n", __func__, __LINE__);
+	fpga_add(fpga_xilinx, &fpga[0]);
+
+	return 0;
+}
diff --git a/qemu/roms/u-boot/board/spear/x600/fpga.h b/qemu/roms/u-boot/board/spear/x600/fpga.h
new file mode 100644
index 000000000..3d519a5a7
--- /dev/null
+++ b/qemu/roms/u-boot/board/spear/x600/fpga.h
@@ -0,0 +1,7 @@
+/*
+ * Copyright (C) 2012 Stefan Roese <sr@denx.de>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+int x600_init_fpga(void);
diff --git a/qemu/roms/u-boot/board/spear/x600/x600.c b/qemu/roms/u-boot/board/spear/x600/x600.c
new file mode 100644
index 000000000..b8edfcd07
--- /dev/null
+++ b/qemu/roms/u-boot/board/spear/x600/x600.c
@@ -0,0 +1,109 @@
+/*
+ * (C) Copyright 2009
+ * Vipin Kumar, ST Micoelectronics, vipin.kumar@st.com.
+ *
+ * Copyright (C) 2012 Stefan Roese <sr@denx.de>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <nand.h>
+#include <netdev.h>
+#include <phy.h>
+#include <rtc.h>
+#include <asm/io.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/spr_defs.h>
+#include <asm/arch/spr_misc.h>
+#include <linux/mtd/fsmc_nand.h>
+#include "fpga.h"
+
+static struct nand_chip nand_chip[CONFIG_SYS_MAX_NAND_DEVICE];
+
+int board_init(void)
+{
+	/*
+	 * X600 is equipped with an M41T82 RTC. This RTC has the
+	 * HT bit (Halt Update), which needs to be cleared upon
+	 * power-up. Otherwise the RTC is halted.
+	 */
+	rtc_reset();
+
+	return spear_board_init(MACH_TYPE_SPEAR600);
+}
+
+int board_late_init(void)
+{
+	/*
+	 * Monitor and env protection on by default
+	 */
+	flash_protect(FLAG_PROTECT_SET,
+		      CONFIG_SYS_FLASH_BASE, CONFIG_SYS_FLASH_BASE +
+		      CONFIG_SYS_SPL_LEN + CONFIG_SYS_MONITOR_LEN +
+		      2 * CONFIG_ENV_SECT_SIZE - 1,
+		      &flash_info[0]);
+
+	/* Init FPGA subsystem */
+	x600_init_fpga();
+
+	return 0;
+}
+
+/*
+ * board_nand_init - Board specific NAND initialization
+ * @nand:	mtd private chip structure
+ *
+ * Called by nand_init_chip to initialize the board specific functions
+ */
+
+void board_nand_init(void)
+{
+	struct misc_regs *const misc_regs_p =
+		(struct misc_regs *)CONFIG_SPEAR_MISCBASE;
+	struct nand_chip *nand = &nand_chip[0];
+
+	if (!(readl(&misc_regs_p->auto_cfg_reg) & MISC_NANDDIS))
+		fsmc_nand_init(nand);
+}
+
+int board_phy_config(struct phy_device *phydev)
+{
+	/* Extended PHY control 1, select GMII */
+	phy_write(phydev, MDIO_DEVAD_NONE, 23, 0x0020);
+
+	/* Software reset necessary after GMII mode selction */
+	phy_reset(phydev);
+
+	/* Enable extended page register access */
+	phy_write(phydev, MDIO_DEVAD_NONE, 31, 0x0001);
+
+	/* 17e: Enhanced LED behavior, needs to be written twice */
+	phy_write(phydev, MDIO_DEVAD_NONE, 17, 0x09ff);
+	phy_write(phydev, MDIO_DEVAD_NONE, 17, 0x09ff);
+
+	/* 16e: Enhanced LED method select */
+	phy_write(phydev, MDIO_DEVAD_NONE, 16, 0xe0ea);
+
+	/* Disable extended page register access */
+	phy_write(phydev, MDIO_DEVAD_NONE, 31, 0x0000);
+
+	/* Enable clock output pin */
+	phy_write(phydev, MDIO_DEVAD_NONE, 18, 0x0049);
+
+	if (phydev->drv->config)
+		phydev->drv->config(phydev);
+
+	return 0;
+}
+
+int board_eth_init(bd_t *bis)
+{
+	int ret = 0;
+
+	if (designware_initialize(CONFIG_SPEAR_ETHBASE,
+				  PHY_INTERFACE_MODE_GMII) >= 0)
+		ret++;
+
+	return ret;
+}