ARM DaVinci: Move common functions to board/davinci/common

ARM DaVinci: Move common functions to board/davinci/common.

Signed-off-by: Hugo Villeneuve <hugo.villeneuve@lyrtech.com>

1 files changed, 126 insertions, 0 deletions

diff --git a/board/davinci/common/misc.c b/board/davinci/common/misc.c
new file mode 100644
index 00000000000..71a3b87acf5
--- /dev/null
+++ b/board/davinci/common/misc.c
@@ -0,0 +1,126 @@
+/*
+ * Miscelaneous DaVinci functions.
+ *
+ * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
+ * Copyright (C) 2008 Lyrtech <www.lyrtech.com>
+ * Copyright (C) 2004 Texas Instruments.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+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);
+}
+
+static int dv_get_pllm_output(uint32_t pllm)
+{
+	return (pllm + 1) * (CFG_HZ_CLOCK / 1000000);
+}
+
+void dv_display_clk_infos(void)
+{
+	printf("ARM Clock: %dMHz\n", dv_get_pllm_output(REG(PLL1_PLLM)) / 2);
+	printf("DDR Clock: %dMHz\n", dv_get_pllm_output(REG(PLL2_PLLM)) /
+	       ((REG(PLL2_DIV2) & 0x1f) + 1) / 2);
+}
+
+/* Read ethernet MAC address from EEPROM for DVEVM compatible boards.
+ * Returns 1 if found, 0 otherwise.
+ */
+int dvevm_read_mac_address(uint8_t *buf)
+{
+#ifdef CFG_I2C_EEPROM_ADDR
+	/* Read MAC address. */
+	if (i2c_read(CFG_I2C_EEPROM_ADDR, 0x7F00, CFG_I2C_EEPROM_ADDR_LEN,
+		     (uint8_t *) &buf[0], 6))
+		goto i2cerr;
+
+	/* Check that MAC address is not null. */
+	if (memcmp(buf, "\0\0\0\0\0\0", 6) == 0)
+		goto err;
+
+	return 1; /* Found */
+
+i2cerr:
+	printf("Read from EEPROM @ 0x%02x failed\n", CFG_I2C_EEPROM_ADDR);
+err:
+#endif /* CFG_I2C_EEPROM_ADDR */
+
+	return 0;
+}
+
+/* If there is a MAC address in the environment, and if it is not identical to
+ * the MAC address in the ROM, then a warning is printed and the MAC address
+ * from the environment is used.
+ *
+ * If there is no MAC address in the environment, then it will be initialized
+ * (silently) from the value in the ROM.
+ */
+void dv_configure_mac_address(uint8_t *rom_enetaddr)
+{
+	int i;
+	u_int8_t env_enetaddr[6];
+	char *tmp = getenv("ethaddr");
+	char *end;
+
+	/* Read Ethernet MAC address from the U-Boot environment.
+	 * If it is not defined, env_enetaddr[] will be cleared. */
+	for (i = 0; i < 6; i++) {
+		env_enetaddr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
+		if (tmp)
+			tmp = (*end) ? end+1 : end;
+	}
+
+	/* Check if ROM and U-Boot environment MAC addresses match. */
+	if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6) != 0 &&
+	    memcmp(env_enetaddr, rom_enetaddr, 6) != 0) {
+		printf("Warning: MAC addresses don't match:\n");
+		printf("  ROM MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n",
+		       rom_enetaddr[0], rom_enetaddr[1],
+		       rom_enetaddr[2], rom_enetaddr[3],
+		       rom_enetaddr[4], rom_enetaddr[5]);
+		printf("  \"ethaddr\" value: %02X:%02X:%02X:%02X:%02X:%02X\n",
+		       env_enetaddr[0], env_enetaddr[1],
+		       env_enetaddr[2], env_enetaddr[3],
+		       env_enetaddr[4], env_enetaddr[5]) ;
+		debug("### Using MAC address from environment\n");
+	}
+	if (!tmp) {
+		char ethaddr[20];
+
+		/* There is no MAC address in the environment, so we initialize
+		 * it from the value in the ROM. */
+		sprintf(ethaddr, "%02X:%02X:%02X:%02X:%02X:%02X",
+			rom_enetaddr[0], rom_enetaddr[1],
+			rom_enetaddr[2], rom_enetaddr[3],
+			rom_enetaddr[4], rom_enetaddr[5]) ;
+		debug("### Setting environment from ROM MAC address = \"%s\"\n",
+		      ethaddr);
+		setenv("ethaddr", ethaddr);
+	}
+}