2 * Code commons to all DaVinci SoCs.
4 * Author: Mark A. Greer <mgreer@mvista.com>
6 * 2009 (c) MontaVista Software, Inc. This file is licensed under
7 * the terms of the GNU General Public License version 2. This program
8 * is licensed "as is" without any warranty of any kind, whether express
11 #include <linux/module.h>
13 #include <linux/etherdevice.h>
16 #include <asm/mach/map.h>
18 #include <mach/common.h>
19 #include <mach/cputype.h>
20 #include <mach/emac.h>
24 struct davinci_soc_info davinci_soc_info;
25 EXPORT_SYMBOL(davinci_soc_info);
27 void __iomem *davinci_intc_base;
29 void davinci_get_mac_addr(struct memory_accessor *mem_acc, void *context)
31 char *mac_addr = davinci_soc_info.emac_pdata->mac_addr;
32 off_t offset = (off_t)context;
34 /* Read MAC addr from EEPROM */
35 if (mem_acc->read(mem_acc, mac_addr, offset, ETH_ALEN) == ETH_ALEN)
36 pr_info("Read MAC addr from EEPROM: %pM\n", mac_addr);
39 static struct davinci_id * __init davinci_get_id(u32 jtag_id)
42 struct davinci_id *dip;
43 u8 variant = (jtag_id & 0xf0000000) >> 28;
44 u16 part_no = (jtag_id & 0x0ffff000) >> 12;
46 for (i = 0, dip = davinci_soc_info.ids; i < davinci_soc_info.ids_num;
48 /* Don't care about the manufacturer right now */
49 if ((dip->part_no == part_no) && (dip->variant == variant))
55 void __init davinci_common_init(struct davinci_soc_info *soc_info)
58 struct davinci_id *dip;
65 memcpy(&davinci_soc_info, soc_info, sizeof(struct davinci_soc_info));
67 if (davinci_soc_info.io_desc && (davinci_soc_info.io_desc_num > 0))
68 iotable_init(davinci_soc_info.io_desc,
69 davinci_soc_info.io_desc_num);
72 * Normally devicemaps_init() would flush caches and tlb after
73 * mdesc->map_io(), but we must also do it here because of the CPU
74 * revision check below.
76 local_flush_tlb_all();
80 * We want to check CPU revision early for cpu_is_xxxx() macros.
81 * IO space mapping must be initialized before we can do that.
83 davinci_soc_info.jtag_id = __raw_readl(davinci_soc_info.jtag_id_base);
85 dip = davinci_get_id(davinci_soc_info.jtag_id);
91 davinci_soc_info.cpu_id = dip->cpu_id;
92 pr_info("DaVinci %s variant 0x%x\n", dip->name, dip->variant);
94 if (davinci_soc_info.cpu_clks) {
95 ret = davinci_clk_init(davinci_soc_info.cpu_clks);
101 davinci_intc_base = davinci_soc_info.intc_base;
105 pr_err("davinci_common_init: SoC Initialization failed\n");