139 lines
3.4 KiB
C
139 lines
3.4 KiB
C
/*
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* pcm051 - phyCORE-AM335x Board Initalization Code
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*
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* Copyright (C) 2012 Teresa Gámez, Phytec Messtechnik GmbH
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*
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* Based on arch/arm/boards/omap/board-beagle.c
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <bootsource.h>
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#include <common.h>
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#include <nand.h>
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#include <init.h>
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#include <io.h>
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#include <net.h>
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#include <sizes.h>
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#include <envfs.h>
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#include <asm/armlinux.h>
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#include <generated/mach-types.h>
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#include <linux/phy.h>
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#include <mach/am33xx-generic.h>
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#include <mach/am33xx-silicon.h>
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#include <mach/am33xx-devices.h>
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#include <mach/bbu.h>
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#include <i2c/i2c.h>
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#define SOBJB_EE_MAGIC 0x50b0d0ee
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static int sysmocom_odu_eth_init(void)
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{
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struct i2c_adapter *adapter;
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struct i2c_client client;
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uint32_t magic;
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char mac[6];
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int ret, ix;
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adapter = i2c_get_adapter(0);
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if (!adapter) {
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pr_err("[ODU] Failed to obtain I2C adapter 0 reference\n");
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return -4;
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}
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client.addr = 0x50;
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client.adapter = adapter;
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ret = i2c_read_reg(&client, 0, (uint8_t *)&magic, sizeof(magic));
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if (ret != sizeof(magic)) {
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pr_err("[ODU] Reading %d instead of %u\n", ret, sizeof(magic));
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return -1;
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}
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if (magic != SOBJB_EE_MAGIC) {
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pr_err("[ODU] Wrong magic (0x%08x != 0x%08x\n", magic, SOBJB_EE_MAGIC);
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return -2;
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}
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for (ix = 0; ix < 2; ix++) {
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int mac_offset;
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/* offsetof(sob_odu_eeprom, mac_eth0) = 24 */
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mac_offset = 24 + (sizeof(mac) * ix);
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ret = i2c_read_reg(&client, mac_offset, mac, sizeof(mac));
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if (ret != sizeof(mac)) {
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pr_err("[ODU] Failed to read MAC address\n");
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return -3;
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} else {
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pr_err("[ODU] Registering EEPROM MAC address\n");
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eth_register_ethaddr(ix, mac);
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}
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}
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return 0;
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}
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static int pcm051_coredevice_init(void)
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{
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if (!of_machine_is_compatible("phytec,pcm051"))
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return 0;
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return 0;
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}
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coredevice_initcall(pcm051_coredevice_init);
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static struct omap_barebox_part pcm051_barebox_part = {
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.nand_offset = SZ_512K,
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.nand_size = SZ_512K,
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.nor_offset = SZ_128K,
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.nor_size = SZ_512K,
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};
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static char *xloadslots[] = {
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"/dev/nand0.xload.bb",
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"/dev/nand0.xload_backup1.bb",
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"/dev/nand0.xload_backup2.bb",
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"/dev/nand0.xload_backup3.bb"
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};
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static int pcm051_devices_init(void)
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{
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if (!of_machine_is_compatible("phytec,pcm051"))
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return 0;
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/* First try to retrieve MAC address from SOB-ODU (>= v3) EEPROM */
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if (sysmocom_odu_eth_init() < 0)
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am33xx_register_ethaddr(0, 0);
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switch (bootsource_get()) {
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case BOOTSOURCE_SPI:
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of_device_enable_path("/chosen/environment-spi");
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break;
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case BOOTSOURCE_MMC:
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omap_set_bootmmc_devname("mmc0");
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break;
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default:
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of_device_enable_path("/chosen/environment-nand");
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break;
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}
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omap_set_barebox_part(&pcm051_barebox_part);
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armlinux_set_architecture(MACH_TYPE_PCM051);
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defaultenv_append_directory(defaultenv_phycore_am335x);
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am33xx_bbu_spi_nor_mlo_register_handler("MLO.spi", "/dev/m25p0.xload");
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am33xx_bbu_nand_xloadslots_register_handler("MLO.nand",
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xloadslots, ARRAY_SIZE(xloadslots));
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return 0;
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}
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device_initcall(pcm051_devices_init);
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