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>
33 #include <linux/compiler.h>
35 extern omap3_sysinfo sysinfo;
36 static struct ctrl *ctrl_base = (struct ctrl *)OMAP34XX_CTRL_BASE;
38 #ifdef CONFIG_DISPLAY_CPUINFO
39 static char *rev_s[CPU_3XX_MAX_REV] = {
49 /* this is the revision table for 37xx CPUs */
50 static char *rev_s_37xx[CPU_37XX_MAX_REV] = {
54 #endif /* CONFIG_DISPLAY_CPUINFO */
56 /*****************************************************************
57 * dieid_num_r(void) - read and set die ID
58 *****************************************************************/
59 void dieid_num_r(void)
61 struct ctrl_id *id_base = (struct ctrl_id *)OMAP34XX_ID_L4_IO_BASE;
62 char *uid_s, die_id[34];
65 memset(die_id, 0, sizeof(die_id));
67 uid_s = getenv("dieid#");
70 id[3] = readl(&id_base->die_id_0);
71 id[2] = readl(&id_base->die_id_1);
72 id[1] = readl(&id_base->die_id_2);
73 id[0] = readl(&id_base->die_id_3);
74 sprintf(die_id, "%08x%08x%08x%08x", id[0], id[1], id[2], id[3]);
75 setenv("dieid#", die_id);
79 printf("Die ID #%s\n", uid_s);
82 /******************************************
83 * get_cpu_type(void) - extract cpu info
84 ******************************************/
85 u32 get_cpu_type(void)
87 return readl(&ctrl_base->ctrl_omap_stat);
90 /******************************************
91 * get_cpu_id(void) - extract cpu id
92 * returns 0 for ES1.0, cpuid otherwise
93 ******************************************/
96 struct ctrl_id *id_base;
100 * On ES1.0 the IDCODE register is not exposed on L4
101 * so using CPU ID to differentiate between ES1.0 and > ES1.0.
103 __asm__ __volatile__("mrc p15, 0, %0, c0, c0, 0":"=r"(cpuid));
104 if ((cpuid & 0xf) == 0x0) {
107 /* Decode the IDs on > ES1.0 */
108 id_base = (struct ctrl_id *) OMAP34XX_ID_L4_IO_BASE;
110 cpuid = readl(&id_base->idcode);
116 /******************************************
117 * get_cpu_family(void) - extract cpu info
118 ******************************************/
119 u32 get_cpu_family(void)
123 u32 cpuid = get_cpu_id();
128 hawkeye = (cpuid >> HAWKEYE_SHIFT) & 0xffff;
130 case HAWKEYE_OMAP34XX:
131 cpu_family = CPU_OMAP34XX;
134 cpu_family = CPU_AM35XX;
136 case HAWKEYE_OMAP36XX:
137 cpu_family = CPU_OMAP36XX;
140 cpu_family = CPU_OMAP34XX;
146 /******************************************
147 * get_cpu_rev(void) - extract version info
148 ******************************************/
149 u32 get_cpu_rev(void)
151 u32 cpuid = get_cpu_id();
156 return (cpuid >> CPU_3XX_ID_SHIFT) & 0xf;
159 /*****************************************************************
160 * get_sku_id(void) - read sku_id to get info on max clock rate
161 *****************************************************************/
164 struct ctrl_id *id_base = (struct ctrl_id *)OMAP34XX_ID_L4_IO_BASE;
165 return readl(&id_base->sku_id) & SKUID_CLK_MASK;
168 /***************************************************************************
169 * get_gpmc0_base() - Return current address hardware will be
170 * fetching from. The below effectively gives what is correct, its a bit
171 * mis-leading compared to the TRM. For the most general case the mask
172 * needs to be also taken into account this does work in practice.
173 * - for u-boot we currently map:
178 ****************************************************************************/
179 u32 get_gpmc0_base(void)
183 b = readl(&gpmc_cfg->cs[0].config7);
184 b &= 0x1F; /* keep base [5:0] */
185 b = b << 24; /* ret 0x0b000000 */
189 /*******************************************************************
190 * get_gpmc0_width() - See if bus is in x8 or x16 (mainly for nand)
191 *******************************************************************/
192 u32 get_gpmc0_width(void)
197 /*************************************************************************
198 * get_board_rev() - setup to pass kernel board revision information
199 * returns:(bit[0-3] sub version, higher bit[7-4] is higher version)
200 *************************************************************************/
201 u32 __weak get_board_rev(void)
206 /********************************************************
207 * get_base(); get upper addr of current execution
208 *******************************************************/
213 __asm__ __volatile__("mov %0, pc \n":"=r"(val)::"memory");
219 /********************************************************
220 * is_running_in_flash() - tell if currently running in
222 *******************************************************/
223 u32 is_running_in_flash(void)
226 return 1; /* in FLASH */
228 return 0; /* running in SRAM or SDRAM */
231 /********************************************************
232 * is_running_in_sram() - tell if currently running in
234 *******************************************************/
235 u32 is_running_in_sram(void)
238 return 1; /* in SRAM */
240 return 0; /* running in FLASH or SDRAM */
243 /********************************************************
244 * is_running_in_sdram() - tell if currently running in
246 *******************************************************/
247 u32 is_running_in_sdram(void)
250 return 1; /* in SDRAM */
252 return 0; /* running in SRAM or FLASH */
255 /***************************************************************
256 * get_boot_type() - Is this an XIP type device or a stream one
257 * bits 4-0 specify type. Bit 5 says mem/perif
258 ***************************************************************/
259 u32 get_boot_type(void)
261 return (readl(&ctrl_base->status) & SYSBOOT_MASK);
264 /*************************************************************
265 * get_device_type(): tell if GP/HS/EMU/TST
266 *************************************************************/
267 u32 get_device_type(void)
269 return ((readl(&ctrl_base->status) & (DEVICE_MASK)) >> 8);
272 #ifdef CONFIG_DISPLAY_CPUINFO
274 * Print CPU information
276 int print_cpuinfo (void)
278 char *cpu_family_s, *cpu_s, *sec_s, *max_clk;
280 switch (get_cpu_family()) {
282 cpu_family_s = "OMAP";
283 switch (get_cpu_type()) {
300 if ((get_cpu_rev() >= CPU_3XX_ES31) &&
301 (get_sku_id() == SKUID_CLK_720MHZ))
309 switch (get_cpu_type()) {
323 cpu_family_s = "OMAP";
324 switch (get_cpu_type()) {
335 cpu_family_s = "OMAP";
340 switch (get_device_type()) {
357 if (CPU_OMAP36XX == get_cpu_family())
358 printf("%s%s-%s ES%s, CPU-OPP2, L3-165MHz, Max CPU Clock %s\n",
359 cpu_family_s, cpu_s, sec_s,
360 rev_s_37xx[get_cpu_rev()], max_clk);
362 printf("%s%s-%s ES%s, CPU-OPP2, L3-165MHz, Max CPU Clock %s\n",
363 cpu_family_s, cpu_s, sec_s,
364 rev_s[get_cpu_rev()], max_clk);
368 #endif /* CONFIG_DISPLAY_CPUINFO */