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>
14 #include <linux/davinci_emac.h>
17 #include <asm/mach/map.h>
19 #include <mach/common.h>
20 #include <mach/cputype.h>
24 struct davinci_soc_info davinci_soc_info;
25 EXPORT_SYMBOL(davinci_soc_info);
27 void __iomem *davinci_intc_base;
28 int davinci_intc_type;
30 void davinci_get_mac_addr(struct memory_accessor *mem_acc, void *context)
32 char *mac_addr = davinci_soc_info.emac_pdata->mac_addr;
33 off_t offset = (off_t)context;
35 /* Read MAC addr from EEPROM */
36 if (mem_acc->read(mem_acc, mac_addr, offset, ETH_ALEN) == ETH_ALEN)
37 pr_info("Read MAC addr from EEPROM: %pM\n", mac_addr);
40 static int __init davinci_init_id(struct davinci_soc_info *soc_info)
43 struct davinci_id *dip;
48 base = ioremap(soc_info->jtag_id_reg, SZ_4K);
50 pr_err("Unable to map JTAG ID register\n");
54 soc_info->jtag_id = __raw_readl(base);
57 variant = (soc_info->jtag_id & 0xf0000000) >> 28;
58 part_no = (soc_info->jtag_id & 0x0ffff000) >> 12;
60 for (i = 0, dip = soc_info->ids; i < soc_info->ids_num;
62 /* Don't care about the manufacturer right now */
63 if ((dip->part_no == part_no) && (dip->variant == variant)) {
64 soc_info->cpu_id = dip->cpu_id;
65 pr_info("DaVinci %s variant 0x%x\n", dip->name,
70 pr_err("Unknown DaVinci JTAG ID 0x%x\n", soc_info->jtag_id);
74 void __init davinci_common_init(struct davinci_soc_info *soc_info)
83 memcpy(&davinci_soc_info, soc_info, sizeof(struct davinci_soc_info));
85 if (davinci_soc_info.io_desc && (davinci_soc_info.io_desc_num > 0))
86 iotable_init(davinci_soc_info.io_desc,
87 davinci_soc_info.io_desc_num);
90 * Normally devicemaps_init() would flush caches and tlb after
91 * mdesc->map_io(), but we must also do it here because of the CPU
92 * revision check below.
94 local_flush_tlb_all();
97 if (!davinci_soc_info.reset)
98 davinci_soc_info.reset = davinci_watchdog_reset;
101 * We want to check CPU revision early for cpu_is_xxxx() macros.
102 * IO space mapping must be initialized before we can do that.
104 ret = davinci_init_id(&davinci_soc_info);
108 if (davinci_soc_info.cpu_clks) {
109 ret = davinci_clk_init(davinci_soc_info.cpu_clks);
118 panic("davinci_common_init: SoC Initialization failed\n");