1 files changed, 132 insertions, 0 deletions
diff --git a/roms/u-boot/board/davinci/sffsdr/sffsdr.c b/roms/u-boot/board/davinci/sffsdr/sffsdr.c
new file mode 100644
index 00000000..f6ab91e6
--- /dev/null
+++ b/roms/u-boot/board/davinci/sffsdr/sffsdr.c
@@ -0,0 +1,132 @@
+/*
+ * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
+ *
+ * Copyright (C) 2008 Lyrtech <www.lyrtech.com>
+ * Copyright (C) 2008 Philip Balister, OpenSDR <philip@opensdr.com>
+ *
+ * Parts are shamelessly stolen from various TI sources, original copyright
+ * follows:
+ *
+ * Copyright (C) 2004 Texas Instruments.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <i2c.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/davinci_misc.h>
+
+#define DAVINCI_A3CR     (0x01E00014)	/* EMIF-A CS3 config register. */
+#define DAVINCI_A3CR_VAL (0x3FFFFFFD)	/* EMIF-A CS3 value for FPGA. */
+
+#define INTEGRITY_SYSCFG_OFFSET    0x7E8
+#define INTEGRITY_CHECKWORD_OFFSET 0x7F8
+#define INTEGRITY_CHECKWORD_VALUE  0x10ADBEEF
+
+DECLARE_GLOBAL_DATA_PTR;
+
+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;
+
+	davinci_errata_workarounds();
+
+	/* Power on required peripherals */
+	lpsc_on(DAVINCI_LPSC_GPIO);
+
+#if !defined(CONFIG_SYS_USE_DSPLINK)
+	/* Powerup the DSP */
+	dsp_on();
+#endif /* CONFIG_SYS_USE_DSPLINK */
+
+	davinci_enable_uart0();
+	davinci_enable_emac();
+	davinci_enable_i2c();
+
+	lpsc_on(DAVINCI_LPSC_TIMER1);
+	timer_init();
+
+	return(0);
+}
+
+/* Read ethernet MAC address from Integrity data structure inside EEPROM.
+ * Returns 1 if found, 0 otherwise.
+ */
+static int sffsdr_read_mac_address(uint8_t *buf)
+{
+	u_int32_t value, mac[2], address;
+
+	/* Read Integrity data structure checkword. */
+	if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, INTEGRITY_CHECKWORD_OFFSET,
+		     CONFIG_SYS_I2C_EEPROM_ADDR_LEN, (uint8_t *) &value, 4))
+		goto err;
+	if (value != INTEGRITY_CHECKWORD_VALUE)
+		return 0;
+
+	/* Read SYSCFG structure offset. */
+	if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, INTEGRITY_SYSCFG_OFFSET,
+		     CONFIG_SYS_I2C_EEPROM_ADDR_LEN, (uint8_t *) &value, 4))
+		goto err;
+	address = 0x800 + (int) value; /* Address of SYSCFG structure. */
+
+	/* Read NET CONFIG structure offset. */
+	if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, address,
+		     CONFIG_SYS_I2C_EEPROM_ADDR_LEN, (uint8_t *) &value, 4))
+		goto err;
+	address = 0x800 + (int) value; /* Address of NET CONFIG structure. */
+	address += 12; /* Address of NET INTERFACE CONFIG structure. */
+
+	/* Read NET INTERFACE CONFIG 2 structure offset. */
+	if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, address,
+		     CONFIG_SYS_I2C_EEPROM_ADDR_LEN, (uint8_t *) &value, 4))
+		goto err;
+	address = 0x800 + 16 + (int) value;	/* Address of NET INTERFACE
+						 * CONFIG 2 structure. */
+
+	/* Read MAC address. */
+	if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, address,
+		     CONFIG_SYS_I2C_EEPROM_ADDR_LEN, (uint8_t *) &mac[0], 8))
+		goto err;
+
+	buf[0] = mac[0] >> 24;
+	buf[1] = mac[0] >> 16;
+	buf[2] = mac[0] >> 8;
+	buf[3] = mac[0];
+	buf[4] = mac[1] >> 24;
+	buf[5] = mac[1] >> 16;
+
+	return 1; /* Found */
+
+err:
+	printf("Read from EEPROM @ 0x%02x failed\n", CONFIG_SYS_I2C_EEPROM_ADDR);
+	return 0;
+}
+
+/* Platform dependent initialisation. */
+int misc_init_r(void)
+{
+	uint8_t i2cbuf;
+	uint8_t eeprom_enetaddr[6];
+
+	/* EMIF-A CS3 configuration for FPGA. */
+	REG(DAVINCI_A3CR) = DAVINCI_A3CR_VAL;
+
+	/* Configure I2C switch (PCA9543) to enable channel 0. */
+	i2cbuf = CONFIG_SYS_I2C_PCA9543_ENABLE_CH0;
+	if (i2c_write(CONFIG_SYS_I2C_PCA9543_ADDR, 0,
+		      CONFIG_SYS_I2C_PCA9543_ADDR_LEN, &i2cbuf, 1)) {
+		printf("Write to MUX @ 0x%02x failed\n", CONFIG_SYS_I2C_PCA9543_ADDR);
+		return 1;
+	}
+
+	/* Read Ethernet MAC address from EEPROM if available. */
+	if (sffsdr_read_mac_address(eeprom_enetaddr))
+		davinci_sync_env_enetaddr(eeprom_enetaddr);
+
+	return(0);
+}