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git.ipfire.org Git - people/ms/u-boot.git/blob - cpu/arm_cortexa8/omap3/sys_info.c
3 * Texas Instruments, <www.ti.com>
6 * Manikandan Pillai <mani.pillai@ti.com>
8 * Derived from Beagle Board and 3430 SDP code by
9 * Richard Woodruff <r-woodruff2@ti.com>
10 * Syed Mohammed Khasim <khasim@ti.com>
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.
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.
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,
30 #include <asm/arch/mem.h> /* get mem tables */
31 #include <asm/arch/sys_proto.h>
34 extern omap3_sysinfo sysinfo
;
35 static gpmc_csx_t
*gpmc_cs_base
= (gpmc_csx_t
*)GPMC_CONFIG_CS0_BASE
;
36 static sdrc_t
*sdrc_base
= (sdrc_t
*)OMAP34XX_SDRC_BASE
;
37 static ctrl_t
*ctrl_base
= (ctrl_t
*)OMAP34XX_CTRL_BASE
;
39 /*****************************************************************
40 * dieid_num_r(void) - read and set die ID
41 *****************************************************************/
42 void dieid_num_r(void)
44 ctrl_id_t
*id_base
= (ctrl_id_t
*)OMAP34XX_ID_L4_IO_BASE
;
45 char *uid_s
, die_id
[34];
48 memset(die_id
, 0, sizeof(die_id
));
50 uid_s
= getenv("dieid#");
53 id
[3] = readl(&id_base
->die_id_0
);
54 id
[2] = readl(&id_base
->die_id_1
);
55 id
[1] = readl(&id_base
->die_id_2
);
56 id
[0] = readl(&id_base
->die_id_3
);
57 sprintf(die_id
, "%08x%08x%08x%08x", id
[0], id
[1], id
[2], id
[3]);
58 setenv("dieid#", die_id
);
62 printf("Die ID #%s\n", uid_s
);
65 /******************************************
66 * get_cpu_type(void) - extract cpu info
67 ******************************************/
68 u32
get_cpu_type(void)
70 return readl(&ctrl_base
->ctrl_omap_stat
);
73 /******************************************
74 * get_cpu_rev(void) - extract version info
75 ******************************************/
81 * On ES1.0 the IDCODE register is not exposed on L4
82 * so using CPU ID to differentiate
83 * between ES2.0 and ES1.0.
85 __asm__
__volatile__("mrc p15, 0, %0, c0, c0, 0":"=r"(cpuid
));
86 if ((cpuid
& 0xf) == 0x0)
93 /****************************************************
94 * is_mem_sdr() - return 1 if mem type in use is SDR
95 ****************************************************/
98 if (readl(&sdrc_base
->cs
[CS0
].mr
) == SDP_SDRC_MR_0_SDR
)
103 /***********************************************************************
104 * get_cs0_size() - get size of chip select 0/1
105 ************************************************************************/
106 u32
get_sdr_cs_size(u32 cs
)
110 /* get ram size field */
111 size
= readl(&sdrc_base
->cs
[cs
].mcfg
) >> 8;
112 size
&= 0x3FF; /* remove unwanted bits */
113 size
*= SZ_2M
; /* find size in MB */
117 /***********************************************************************
118 * get_sdr_cs_offset() - get offset of cs from cs0 start
119 ************************************************************************/
120 u32
get_sdr_cs_offset(u32 cs
)
127 offset
= readl(&sdrc_base
->cs_cfg
);
128 offset
= (offset
& 15) << 27 | (offset
& 0x30) >> 17;
133 /***********************************************************************
134 * get_board_type() - get board type based on current production stats.
135 * - NOTE-1-: 2 I2C EEPROMs will someday be populated with proper info.
136 * when they are available we can get info from there. This should
137 * be correct of all known boards up until today.
138 * - NOTE-2- EEPROMs are populated but they are updated very slowly. To
139 * avoid waiting on them we will use ES version of the chip to get info.
140 * A later version of the FPGA migth solve their speed issue.
141 ************************************************************************/
142 u32
get_board_type(void)
144 if (get_cpu_rev() == CPU_3430_ES2
)
145 return sysinfo
.board_type_v2
;
147 return sysinfo
.board_type_v1
;
150 /***************************************************************************
151 * get_gpmc0_base() - Return current address hardware will be
152 * fetching from. The below effectively gives what is correct, its a bit
153 * mis-leading compared to the TRM. For the most general case the mask
154 * needs to be also taken into account this does work in practice.
155 * - for u-boot we currently map:
160 ****************************************************************************/
161 u32
get_gpmc0_base(void)
165 b
= readl(&gpmc_cs_base
->config7
);
166 b
&= 0x1F; /* keep base [5:0] */
167 b
= b
<< 24; /* ret 0x0b000000 */
171 /*******************************************************************
172 * get_gpmc0_width() - See if bus is in x8 or x16 (mainly for nand)
173 *******************************************************************/
174 u32
get_gpmc0_width(void)
179 /*************************************************************************
180 * get_board_rev() - setup to pass kernel board revision information
181 * returns:(bit[0-3] sub version, higher bit[7-4] is higher version)
182 *************************************************************************/
183 u32
get_board_rev(void)
188 /*********************************************************************
189 * display_board_info() - print banner with board info.
190 *********************************************************************/
191 void display_board_info(u32 btype
)
193 char *cpu_s
, *mem_s
, *sec_s
;
195 switch (get_cpu_type()) {
218 switch (get_device_type()) {
236 printf("OMAP%s-%s rev %d, CPU-OPP2 L3-165MHz\n", cpu_s
,
237 sec_s
, get_cpu_rev());
238 printf("%s + %s/%s\n", sysinfo
.board_string
,
239 mem_s
, sysinfo
.nand_string
);
243 /********************************************************
244 * get_base(); get upper addr of current execution
245 *******************************************************/
250 __asm__
__volatile__("mov %0, pc \n":"=r"(val
)::"memory");
256 /********************************************************
257 * is_running_in_flash() - tell if currently running in
259 *******************************************************/
260 u32
is_running_in_flash(void)
263 return 1; /* in FLASH */
265 return 0; /* running in SRAM or SDRAM */
268 /********************************************************
269 * is_running_in_sram() - tell if currently running in
271 *******************************************************/
272 u32
is_running_in_sram(void)
275 return 1; /* in SRAM */
277 return 0; /* running in FLASH or SDRAM */
280 /********************************************************
281 * is_running_in_sdram() - tell if currently running in
283 *******************************************************/
284 u32
is_running_in_sdram(void)
287 return 1; /* in SDRAM */
289 return 0; /* running in SRAM or FLASH */
292 /***************************************************************
293 * get_boot_type() - Is this an XIP type device or a stream one
294 * bits 4-0 specify type. Bit 5 says mem/perif
295 ***************************************************************/
296 u32
get_boot_type(void)
298 return (readl(&ctrl_base
->status
) & SYSBOOT_MASK
);
301 /*************************************************************
302 * get_device_type(): tell if GP/HS/EMU/TST
303 *************************************************************/
304 u32
get_device_type(void)
306 return ((readl(&ctrl_base
->status
) & (DEVICE_MASK
)) >> 8);