tizen 2.4 release
[kernel/u-boot-tm1.git] / arch / arm / cpu / armv7 / omap3 / sys_info.c
1 /*
2  * (C) Copyright 2008
3  * Texas Instruments, <www.ti.com>
4  *
5  * Author :
6  *      Manikandan Pillai <mani.pillai@ti.com>
7  *
8  * Derived from Beagle Board and 3430 SDP code by
9  *      Richard Woodruff <r-woodruff2@ti.com>
10  *      Syed Mohammed Khasim <khasim@ti.com>
11  *
12  * This program is free software; you can redistribute it and/or
13  * modify it under the terms of the GNU General Public License as
14  * published by the Free Software Foundation; either version 2 of
15  * the License, or (at your option) any later version.
16  *
17  * This program is distributed in the hope that it will be useful,
18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR /PURPOSE.  See the
20  * GNU General Public License for more details.
21  *
22  * You should have received a copy of the GNU General Public License
23  * along with this program; if not, write to the Free Software
24  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25  * MA 02111-1307 USA
26  */
27
28 #include <common.h>
29 #include <asm/io.h>
30 #include <asm/arch/mem.h>       /* get mem tables */
31 #include <asm/arch/sys_proto.h>
32 #include <i2c.h>
33
34 extern omap3_sysinfo sysinfo;
35 static struct ctrl *ctrl_base = (struct ctrl *)OMAP34XX_CTRL_BASE;
36 static char *rev_s[CPU_3XX_MAX_REV] = {
37                                 "1.0",
38                                 "2.0",
39                                 "2.1",
40                                 "3.0",
41                                 "3.1",
42                                 "UNKNOWN",
43                                 "UNKNOWN",
44                                 "3.1.2"};
45
46 /*****************************************************************
47  * dieid_num_r(void) - read and set die ID
48  *****************************************************************/
49 void dieid_num_r(void)
50 {
51         struct ctrl_id *id_base = (struct ctrl_id *)OMAP34XX_ID_L4_IO_BASE;
52         char *uid_s, die_id[34];
53         u32 id[4];
54
55         memset(die_id, 0, sizeof(die_id));
56
57         uid_s = getenv("dieid#");
58
59         if (uid_s == NULL) {
60                 id[3] = readl(&id_base->die_id_0);
61                 id[2] = readl(&id_base->die_id_1);
62                 id[1] = readl(&id_base->die_id_2);
63                 id[0] = readl(&id_base->die_id_3);
64                 sprintf(die_id, "%08x%08x%08x%08x", id[0], id[1], id[2], id[3]);
65                 setenv("dieid#", die_id);
66                 uid_s = die_id;
67         }
68
69         printf("Die ID #%s\n", uid_s);
70 }
71
72 /******************************************
73  * get_cpu_type(void) - extract cpu info
74  ******************************************/
75 u32 get_cpu_type(void)
76 {
77         return readl(&ctrl_base->ctrl_omap_stat);
78 }
79
80 /******************************************
81  * get_cpu_id(void) - extract cpu id
82  * returns 0 for ES1.0, cpuid otherwise
83  ******************************************/
84 u32 get_cpu_id(void)
85 {
86         struct ctrl_id *id_base;
87         u32 cpuid = 0;
88
89         /*
90          * On ES1.0 the IDCODE register is not exposed on L4
91          * so using CPU ID to differentiate between ES1.0 and > ES1.0.
92          */
93         __asm__ __volatile__("mrc p15, 0, %0, c0, c0, 0":"=r"(cpuid));
94         if ((cpuid & 0xf) == 0x0) {
95                 return 0;
96         } else {
97                 /* Decode the IDs on > ES1.0 */
98                 id_base = (struct ctrl_id *) OMAP34XX_ID_L4_IO_BASE;
99
100                 cpuid = readl(&id_base->idcode);
101         }
102
103         return cpuid;
104 }
105
106 /******************************************
107  * get_cpu_family(void) - extract cpu info
108  ******************************************/
109 u32 get_cpu_family(void)
110 {
111         u16 hawkeye;
112         u32 cpu_family;
113         u32 cpuid = get_cpu_id();
114
115         if (cpuid == 0)
116                 return CPU_OMAP34XX;
117
118         hawkeye = (cpuid >> HAWKEYE_SHIFT) & 0xffff;
119         switch (hawkeye) {
120         case HAWKEYE_OMAP34XX:
121                 cpu_family = CPU_OMAP34XX;
122                 break;
123         case HAWKEYE_AM35XX:
124                 cpu_family = CPU_AM35XX;
125                 break;
126         case HAWKEYE_OMAP36XX:
127                 cpu_family = CPU_OMAP36XX;
128                 break;
129         default:
130                 cpu_family = CPU_OMAP34XX;
131         }
132
133         return cpu_family;
134 }
135
136 /******************************************
137  * get_cpu_rev(void) - extract version info
138  ******************************************/
139 u32 get_cpu_rev(void)
140 {
141         u32 cpuid = get_cpu_id();
142
143         if (cpuid == 0)
144                 return CPU_3XX_ES10;
145         else
146                 return (cpuid >> CPU_3XX_ID_SHIFT) & 0xf;
147 }
148
149 /*****************************************************************
150  * get_sku_id(void) - read sku_id to get info on max clock rate
151  *****************************************************************/
152 u32 get_sku_id(void)
153 {
154         struct ctrl_id *id_base = (struct ctrl_id *)OMAP34XX_ID_L4_IO_BASE;
155         return readl(&id_base->sku_id) & SKUID_CLK_MASK;
156 }
157
158 /***************************************************************************
159  *  get_gpmc0_base() - Return current address hardware will be
160  *     fetching from. The below effectively gives what is correct, its a bit
161  *   mis-leading compared to the TRM.  For the most general case the mask
162  *   needs to be also taken into account this does work in practice.
163  *   - for u-boot we currently map:
164  *       -- 0 to nothing,
165  *       -- 4 to flash
166  *       -- 8 to enent
167  *       -- c to wifi
168  ****************************************************************************/
169 u32 get_gpmc0_base(void)
170 {
171         u32 b;
172
173         b = readl(&gpmc_cfg->cs[0].config7);
174         b &= 0x1F;              /* keep base [5:0] */
175         b = b << 24;            /* ret 0x0b000000 */
176         return b;
177 }
178
179 /*******************************************************************
180  * get_gpmc0_width() - See if bus is in x8 or x16 (mainly for nand)
181  *******************************************************************/
182 u32 get_gpmc0_width(void)
183 {
184         return WIDTH_16BIT;
185 }
186
187 /*************************************************************************
188  * get_board_rev() - setup to pass kernel board revision information
189  * returns:(bit[0-3] sub version, higher bit[7-4] is higher version)
190  *************************************************************************/
191 u32 get_board_rev(void)
192 {
193         return 0x20;
194 }
195
196 /********************************************************
197  *  get_base(); get upper addr of current execution
198  *******************************************************/
199 u32 get_base(void)
200 {
201         u32 val;
202
203         __asm__ __volatile__("mov %0, pc \n":"=r"(val)::"memory");
204         val &= 0xF0000000;
205         val >>= 28;
206         return val;
207 }
208
209 /********************************************************
210  *  is_running_in_flash() - tell if currently running in
211  *  FLASH.
212  *******************************************************/
213 u32 is_running_in_flash(void)
214 {
215         if (get_base() < 4)
216                 return 1;       /* in FLASH */
217
218         return 0;               /* running in SRAM or SDRAM */
219 }
220
221 /********************************************************
222  *  is_running_in_sram() - tell if currently running in
223  *  SRAM.
224  *******************************************************/
225 u32 is_running_in_sram(void)
226 {
227         if (get_base() == 4)
228                 return 1;       /* in SRAM */
229
230         return 0;               /* running in FLASH or SDRAM */
231 }
232
233 /********************************************************
234  *  is_running_in_sdram() - tell if currently running in
235  *  SDRAM.
236  *******************************************************/
237 u32 is_running_in_sdram(void)
238 {
239         if (get_base() > 4)
240                 return 1;       /* in SDRAM */
241
242         return 0;               /* running in SRAM or FLASH */
243 }
244
245 /***************************************************************
246  *  get_boot_type() - Is this an XIP type device or a stream one
247  *  bits 4-0 specify type. Bit 5 says mem/perif
248  ***************************************************************/
249 u32 get_boot_type(void)
250 {
251         return (readl(&ctrl_base->status) & SYSBOOT_MASK);
252 }
253
254 /*************************************************************
255  *  get_device_type(): tell if GP/HS/EMU/TST
256  *************************************************************/
257 u32 get_device_type(void)
258 {
259         return ((readl(&ctrl_base->status) & (DEVICE_MASK)) >> 8);
260 }
261
262 #ifdef CONFIG_DISPLAY_CPUINFO
263 /**
264  * Print CPU information
265  */
266 int print_cpuinfo (void)
267 {
268         char *cpu_family_s, *cpu_s, *sec_s, *max_clk;
269
270         switch (get_cpu_family()) {
271         case CPU_OMAP34XX:
272                 cpu_family_s = "OMAP";
273                 switch (get_cpu_type()) {
274                 case OMAP3503:
275                         cpu_s = "3503";
276                         break;
277                 case OMAP3515:
278                         cpu_s = "3515";
279                         break;
280                 case OMAP3525:
281                         cpu_s = "3525";
282                         break;
283                 case OMAP3530:
284                         cpu_s = "3530";
285                         break;
286                 default:
287                         cpu_s = "35XX";
288                         break;
289                 }
290                 if ((get_cpu_rev() >= CPU_3XX_ES31) &&
291                     (get_sku_id() == SKUID_CLK_720MHZ))
292                         max_clk = "720 mHz";
293                 else
294                         max_clk = "600 mHz";
295
296                 break;
297         case CPU_AM35XX:
298                 cpu_family_s = "AM";
299                 switch (get_cpu_type()) {
300                 case AM3505:
301                         cpu_s = "3505";
302                         break;
303                 case AM3517:
304                         cpu_s = "3517";
305                         break;
306                 default:
307                         cpu_s = "35XX";
308                         break;
309                 }
310                 max_clk = "600 Mhz";
311                 break;
312         case CPU_OMAP36XX:
313                 cpu_family_s = "OMAP";
314                 switch (get_cpu_type()) {
315                 case OMAP3730:
316                         cpu_s = "3630/3730";
317                         break;
318                 default:
319                         cpu_s = "36XX/37XX";
320                         break;
321                 }
322                 max_clk = "1 Ghz";
323                 break;
324         default:
325                 cpu_family_s = "OMAP";
326                 cpu_s = "35XX";
327                 max_clk = "600 Mhz";
328         }
329
330         switch (get_device_type()) {
331         case TST_DEVICE:
332                 sec_s = "TST";
333                 break;
334         case EMU_DEVICE:
335                 sec_s = "EMU";
336                 break;
337         case HS_DEVICE:
338                 sec_s = "HS";
339                 break;
340         case GP_DEVICE:
341                 sec_s = "GP";
342                 break;
343         default:
344                 sec_s = "?";
345         }
346
347         printf("%s%s-%s ES%s, CPU-OPP2, L3-165MHz, Max CPU Clock %s\n",
348                         cpu_family_s, cpu_s, sec_s,
349                         rev_s[get_cpu_rev()], max_clk);
350
351         return 0;
352 }
353 #endif  /* CONFIG_DISPLAY_CPUINFO */