ARM: Add support for Lyrtech SFF-SDR board (ARM926EJS)

This patch adds support for the Lyrtech SFF-SDR board,
based on the TI DaVinci architecture (ARM926EJS).

Signed-off-by: Hugo Villeneuve <hugo.villeneuve@lyrtech.com>
Signed-off-by: Philip Balister <philip@balister.org>
Signed-off-by: Wolfgang Denk <wd@denx.de>

1 files changed, 212 insertions, 0 deletions

diff --git a/board/davinci/sffsdr/dv_board.c b/board/davinci/sffsdr/dv_board.c
new file mode 100644
index 0000000..0771b5b
--- /dev/null
+++ b/board/davinci/sffsdr/dv_board.c
@@ -0,0 +1,212 @@
+/*
+ * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
+ *
+ * Parts are shamelessly stolen from various TI sources, original copyright
+ * follows:
+ * -----------------------------------------------------------------
+ *
+ * Copyright (C) 2004 Texas Instruments.
+ *
+ * ----------------------------------------------------------------------------
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * ----------------------------------------------------------------------------
+ */
+
+#include <common.h>
+#include <i2c.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/emac_defs.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+extern void	timer_init(void);
+extern int	eth_hw_init(void);
+extern phy_t	phy;
+
+
+/* Works on Always On power domain only (no PD argument) */
+void lpsc_on(unsigned int id)
+{
+	dv_reg_p	mdstat, mdctl;
+
+	if (id >= DAVINCI_LPSC_GEM)
+		return;			/* Don't work on DSP Power Domain */
+
+	mdstat = REG_P(PSC_MDSTAT_BASE + (id * 4));
+	mdctl = REG_P(PSC_MDCTL_BASE + (id * 4));
+
+	while (REG(PSC_PTSTAT) & 0x01);
+
+	if ((*mdstat & 0x1f) == 0x03)
+		return;			/* Already on and enabled */
+
+	*mdctl |= 0x03;
+
+	/* Special treatment for some modules as for sprue14 p.7.4.2 */
+	if ((id == DAVINCI_LPSC_VPSSSLV) ||
+	    (id == DAVINCI_LPSC_EMAC) ||
+	    (id == DAVINCI_LPSC_EMAC_WRAPPER) ||
+	    (id == DAVINCI_LPSC_MDIO) ||
+	    (id == DAVINCI_LPSC_USB) ||
+	    (id == DAVINCI_LPSC_ATA) ||
+	    (id == DAVINCI_LPSC_VLYNQ) ||
+	    (id == DAVINCI_LPSC_UHPI) ||
+	    (id == DAVINCI_LPSC_DDR_EMIF) ||
+	    (id == DAVINCI_LPSC_AEMIF) ||
+	    (id == DAVINCI_LPSC_MMC_SD) ||
+	    (id == DAVINCI_LPSC_MEMSTICK) ||
+	    (id == DAVINCI_LPSC_McBSP) ||
+	    (id == DAVINCI_LPSC_GPIO))
+		* mdctl |= 0x200;
+
+	REG(PSC_PTCMD) = 0x01;
+
+	while (REG(PSC_PTSTAT) & 0x03);
+	while ((*mdstat & 0x1f) != 0x03);	/* Probably an overkill... */
+}
+
+void dsp_on(void)
+{
+	int	i;
+
+	if (REG(PSC_PDSTAT1) & 0x1f)
+		return;			/* Already on */
+
+	REG(PSC_GBLCTL) |= 0x01;
+	REG(PSC_PDCTL1) |= 0x01;
+	REG(PSC_PDCTL1) &= ~0x100;
+	REG(PSC_MDCTL_BASE + (DAVINCI_LPSC_GEM * 4)) |= 0x03;
+	REG(PSC_MDCTL_BASE + (DAVINCI_LPSC_GEM * 4)) &= 0xfffffeff;
+	REG(PSC_MDCTL_BASE + (DAVINCI_LPSC_IMCOP * 4)) |= 0x03;
+	REG(PSC_MDCTL_BASE + (DAVINCI_LPSC_IMCOP * 4)) &= 0xfffffeff;
+	REG(PSC_PTCMD) = 0x02;
+
+	for (i = 0; i < 100; i++) {
+		if (REG(PSC_EPCPR) & 0x02)
+			break;
+	}
+
+	REG(PSC_CHP_SHRTSW) = 0x01;
+	REG(PSC_PDCTL1) |= 0x100;
+	REG(PSC_EPCCR) = 0x02;
+
+	for (i = 0; i < 100; i++) {
+		if (!(REG(PSC_PTSTAT) & 0x02))
+			break;
+	}
+
+	REG(PSC_GBLCTL) &= ~0x1f;
+}
+
+
+int board_init(void)
+{
+	/* arch number of the board */
+	gd->bd->bi_arch_number = MACH_TYPE_SFFSDR;
+
+	/* address of boot parameters */
+	gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
+
+	/* Workaround for TMS320DM6446 errata 1.3.22 */
+	REG(PSC_SILVER_BULLET) = 0;
+
+	/* Power on required peripherals */
+	lpsc_on(DAVINCI_LPSC_EMAC);
+	lpsc_on(DAVINCI_LPSC_EMAC_WRAPPER);
+	lpsc_on(DAVINCI_LPSC_MDIO);
+	lpsc_on(DAVINCI_LPSC_I2C);
+	lpsc_on(DAVINCI_LPSC_UART0);
+	lpsc_on(DAVINCI_LPSC_TIMER1);
+	lpsc_on(DAVINCI_LPSC_GPIO);
+
+	/* Powerup the DSP */
+	dsp_on();
+
+	/* Bringup UART0 out of reset */
+	REG(UART0_PWREMU_MGMT) = 0x0000e003;
+
+	/* Enable GIO3.3V cells used for EMAC */
+	REG(VDD3P3V_PWDN) = 0;
+
+	/* Enable UART0 MUX lines */
+	REG(PINMUX1) |= 1;
+
+	/* Enable EMAC and AEMIF pins */
+	REG(PINMUX0) = 0x80000c1f;
+
+	/* Enable I2C pin Mux */
+	REG(PINMUX1) |= (1 << 7);
+
+	/* Set the Bus Priority Register to appropriate value */
+	REG(VBPR) = 0x20;
+
+	timer_init();
+
+	return(0);
+}
+
+int misc_init_r(void)
+{
+	u_int8_t	tmp[20], buf[10];
+	int		i = 0;
+	int		clk = 0;
+
+	clk = ((REG(PLL2_PLLM) + 1) * 27) / ((REG(PLL2_DIV2) & 0x1f) + 1);
+
+	printf("ARM Clock: %dMHz\n", ((REG(PLL1_PLLM) + 1) * 27) / 2);
+	printf("DDR Clock: %dMHz\n", (clk / 2));
+
+	/* Configure I2C switch (PCA9543) to enable channel 0. */
+	tmp[0] = CFG_I2C_PCA9543_ENABLE_CH0;
+	if (i2c_write(CFG_I2C_PCA9543_ADDR, 0,
+		     CFG_I2C_PCA9543_ADDR_LEN, tmp, 1))
+		printf("Write to MUX @ 0x%02x failed\n", CFG_I2C_PCA9543_ADDR);
+
+	/* Set Ethernet MAC address from EEPROM.
+	 * We must read 8 bytes because data is stored in little-endian. */
+	if (i2c_read(CFG_I2C_EEPROM_ADDR, 0x05A8,
+		     CFG_I2C_EEPROM_ADDR_LEN, buf, 8)) {
+		printf("Read from EEPROM @ 0x%02x failed\n",
+		       CFG_I2C_EEPROM_ADDR);
+	} else {
+		tmp[0] = 0xff;
+		for (i = 0; i < 6; i++)
+			tmp[0] &= buf[i];
+
+		if ((tmp[0] != 0xff) && (getenv("ethaddr") == NULL)) {
+			sprintf((char *)&tmp[0],
+				"%02x:%02x:%02x:%02x:%02x:%02x",
+				buf[3], buf[2], buf[1], buf[0],
+				buf[7], buf[6]);
+			setenv("ethaddr", (char *)&tmp[0]);
+		}
+	}
+
+	if (!eth_hw_init()) {
+		printf("Ethernet init failed\n");
+	} else {
+		printf("ETH PHY: %s\n", phy.name);
+	}
+
+	return(0);
+}
+
+int dram_init(void)
+{
+	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
+	gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
+
+	return(0);
+}