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 struct ctrl *ctrl_base = (struct ctrl *)OMAP34XX_CTRL_BASE;
37 #ifdef CONFIG_DISPLAY_CPUINFO
38 static char *rev_s[CPU_3XX_MAX_REV] = {
48 /* this is the revision table for 37xx CPUs */
49 static char *rev_s_37xx[CPU_37XX_MAX_REV] = {
53 #endif /* CONFIG_DISPLAY_CPUINFO */
55 /*****************************************************************
56 * dieid_num_r(void) - read and set die ID
57 *****************************************************************/
58 void dieid_num_r(void)
60 struct ctrl_id *id_base = (struct ctrl_id *)OMAP34XX_ID_L4_IO_BASE;
61 char *uid_s, die_id[34];
64 memset(die_id, 0, sizeof(die_id));
66 uid_s = getenv("dieid#");
69 id[3] = readl(&id_base->die_id_0);
70 id[2] = readl(&id_base->die_id_1);
71 id[1] = readl(&id_base->die_id_2);
72 id[0] = readl(&id_base->die_id_3);
73 sprintf(die_id, "%08x%08x%08x%08x", id[0], id[1], id[2], id[3]);
74 setenv("dieid#", die_id);
78 printf("Die ID #%s\n", uid_s);
81 /******************************************
82 * get_cpu_type(void) - extract cpu info
83 ******************************************/
84 u32 get_cpu_type(void)
86 return readl(&ctrl_base->ctrl_omap_stat);
89 /******************************************
90 * get_cpu_id(void) - extract cpu id
91 * returns 0 for ES1.0, cpuid otherwise
92 ******************************************/
95 struct ctrl_id *id_base;
99 * On ES1.0 the IDCODE register is not exposed on L4
100 * so using CPU ID to differentiate between ES1.0 and > ES1.0.
102 __asm__ __volatile__("mrc p15, 0, %0, c0, c0, 0":"=r"(cpuid));
103 if ((cpuid & 0xf) == 0x0) {
106 /* Decode the IDs on > ES1.0 */
107 id_base = (struct ctrl_id *) OMAP34XX_ID_L4_IO_BASE;
109 cpuid = readl(&id_base->idcode);
115 /******************************************
116 * get_cpu_family(void) - extract cpu info
117 ******************************************/
118 u32 get_cpu_family(void)
122 u32 cpuid = get_cpu_id();
127 hawkeye = (cpuid >> HAWKEYE_SHIFT) & 0xffff;
129 case HAWKEYE_OMAP34XX:
130 cpu_family = CPU_OMAP34XX;
133 cpu_family = CPU_AM35XX;
135 case HAWKEYE_OMAP36XX:
136 cpu_family = CPU_OMAP36XX;
139 cpu_family = CPU_OMAP34XX;
145 /******************************************
146 * get_cpu_rev(void) - extract version info
147 ******************************************/
148 u32 get_cpu_rev(void)
150 u32 cpuid = get_cpu_id();
155 return (cpuid >> CPU_3XX_ID_SHIFT) & 0xf;
158 /*****************************************************************
159 * get_sku_id(void) - read sku_id to get info on max clock rate
160 *****************************************************************/
163 struct ctrl_id *id_base = (struct ctrl_id *)OMAP34XX_ID_L4_IO_BASE;
164 return readl(&id_base->sku_id) & SKUID_CLK_MASK;
167 /***************************************************************************
168 * get_gpmc0_base() - Return current address hardware will be
169 * fetching from. The below effectively gives what is correct, its a bit
170 * mis-leading compared to the TRM. For the most general case the mask
171 * needs to be also taken into account this does work in practice.
172 * - for u-boot we currently map:
177 ****************************************************************************/
178 u32 get_gpmc0_base(void)
182 b = readl(&gpmc_cfg->cs[0].config7);
183 b &= 0x1F; /* keep base [5:0] */
184 b = b << 24; /* ret 0x0b000000 */
188 /*******************************************************************
189 * get_gpmc0_width() - See if bus is in x8 or x16 (mainly for nand)
190 *******************************************************************/
191 u32 get_gpmc0_width(void)
196 /*************************************************************************
197 * get_board_rev() - setup to pass kernel board revision information
198 * returns:(bit[0-3] sub version, higher bit[7-4] is higher version)
199 *************************************************************************/
200 u32 get_board_rev(void)
205 /********************************************************
206 * get_base(); get upper addr of current execution
207 *******************************************************/
212 __asm__ __volatile__("mov %0, pc \n":"=r"(val)::"memory");
218 /********************************************************
219 * is_running_in_flash() - tell if currently running in
221 *******************************************************/
222 u32 is_running_in_flash(void)
225 return 1; /* in FLASH */
227 return 0; /* running in SRAM or SDRAM */
230 /********************************************************
231 * is_running_in_sram() - tell if currently running in
233 *******************************************************/
234 u32 is_running_in_sram(void)
237 return 1; /* in SRAM */
239 return 0; /* running in FLASH or SDRAM */
242 /********************************************************
243 * is_running_in_sdram() - tell if currently running in
245 *******************************************************/
246 u32 is_running_in_sdram(void)
249 return 1; /* in SDRAM */
251 return 0; /* running in SRAM or FLASH */
254 /***************************************************************
255 * get_boot_type() - Is this an XIP type device or a stream one
256 * bits 4-0 specify type. Bit 5 says mem/perif
257 ***************************************************************/
258 u32 get_boot_type(void)
260 return (readl(&ctrl_base->status) & SYSBOOT_MASK);
263 /*************************************************************
264 * get_device_type(): tell if GP/HS/EMU/TST
265 *************************************************************/
266 u32 get_device_type(void)
268 return ((readl(&ctrl_base->status) & (DEVICE_MASK)) >> 8);
271 #ifdef CONFIG_DISPLAY_CPUINFO
273 * Print CPU information
275 int print_cpuinfo (void)
277 char *cpu_family_s, *cpu_s, *sec_s, *max_clk;
279 switch (get_cpu_family()) {
281 cpu_family_s = "OMAP";
282 switch (get_cpu_type()) {
299 if ((get_cpu_rev() >= CPU_3XX_ES31) &&
300 (get_sku_id() == SKUID_CLK_720MHZ))
308 switch (get_cpu_type()) {
322 cpu_family_s = "OMAP";
323 switch (get_cpu_type()) {
334 cpu_family_s = "OMAP";
339 switch (get_device_type()) {
356 if (CPU_OMAP36XX == get_cpu_family())
357 printf("%s%s-%s ES%s, CPU-OPP2, L3-165MHz, Max CPU Clock %s\n",
358 cpu_family_s, cpu_s, sec_s,
359 rev_s_37xx[get_cpu_rev()], max_clk);
361 printf("%s%s-%s ES%s, CPU-OPP2, L3-165MHz, Max CPU Clock %s\n",
362 cpu_family_s, cpu_s, sec_s,
363 rev_s[get_cpu_rev()], max_clk);
367 #endif /* CONFIG_DISPLAY_CPUINFO */