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 * SPDX-License-Identifier: GPL-2.0+
17 #include <asm/arch/mem.h> /* get mem tables */
18 #include <asm/arch/sys_proto.h>
19 #include <asm/bootm.h>
22 #include <linux/compiler.h>
24 extern omap3_sysinfo sysinfo;
25 static struct ctrl *ctrl_base = (struct ctrl *)OMAP34XX_CTRL_BASE;
27 #ifdef CONFIG_DISPLAY_CPUINFO
28 static char *rev_s[CPU_3XX_MAX_REV] = {
38 /* this is the revision table for 37xx CPUs */
39 static char *rev_s_37xx[CPU_37XX_MAX_REV] = {
43 #endif /* CONFIG_DISPLAY_CPUINFO */
45 void omap_die_id(unsigned int *die_id)
47 struct ctrl_id *id_base = (struct ctrl_id *)OMAP34XX_ID_L4_IO_BASE;
49 die_id[0] = readl(&id_base->die_id_0);
50 die_id[1] = readl(&id_base->die_id_1);
51 die_id[2] = readl(&id_base->die_id_2);
52 die_id[3] = readl(&id_base->die_id_3);
55 /******************************************
56 * get_cpu_type(void) - extract cpu info
57 ******************************************/
58 u32 get_cpu_type(void)
60 return readl(&ctrl_base->ctrl_omap_stat);
63 /******************************************
64 * get_cpu_id(void) - extract cpu id
65 * returns 0 for ES1.0, cpuid otherwise
66 ******************************************/
69 struct ctrl_id *id_base;
73 * On ES1.0 the IDCODE register is not exposed on L4
74 * so using CPU ID to differentiate between ES1.0 and > ES1.0.
76 __asm__ __volatile__("mrc p15, 0, %0, c0, c0, 0":"=r"(cpuid));
77 if ((cpuid & 0xf) == 0x0) {
80 /* Decode the IDs on > ES1.0 */
81 id_base = (struct ctrl_id *) OMAP34XX_ID_L4_IO_BASE;
83 cpuid = readl(&id_base->idcode);
89 /******************************************
90 * get_cpu_family(void) - extract cpu info
91 ******************************************/
92 u32 get_cpu_family(void)
96 u32 cpuid = get_cpu_id();
101 hawkeye = (cpuid >> HAWKEYE_SHIFT) & 0xffff;
103 case HAWKEYE_OMAP34XX:
104 cpu_family = CPU_OMAP34XX;
107 cpu_family = CPU_AM35XX;
109 case HAWKEYE_OMAP36XX:
110 cpu_family = CPU_OMAP36XX;
113 cpu_family = CPU_OMAP34XX;
119 /******************************************
120 * get_cpu_rev(void) - extract version info
121 ******************************************/
122 u32 get_cpu_rev(void)
124 u32 cpuid = get_cpu_id();
129 return (cpuid >> CPU_3XX_ID_SHIFT) & 0xf;
132 /*****************************************************************
133 * get_sku_id(void) - read sku_id to get info on max clock rate
134 *****************************************************************/
137 struct ctrl_id *id_base = (struct ctrl_id *)OMAP34XX_ID_L4_IO_BASE;
138 return readl(&id_base->sku_id) & SKUID_CLK_MASK;
141 /***************************************************************************
142 * get_gpmc0_base() - Return current address hardware will be
143 * fetching from. The below effectively gives what is correct, its a bit
144 * mis-leading compared to the TRM. For the most general case the mask
145 * needs to be also taken into account this does work in practice.
146 * - for u-boot we currently map:
151 ****************************************************************************/
152 u32 get_gpmc0_base(void)
156 b = readl(&gpmc_cfg->cs[0].config7);
157 b &= 0x1F; /* keep base [5:0] */
158 b = b << 24; /* ret 0x0b000000 */
162 /*******************************************************************
163 * get_gpmc0_width() - See if bus is in x8 or x16 (mainly for nand)
164 *******************************************************************/
165 u32 get_gpmc0_width(void)
170 /*************************************************************************
171 * get_board_rev() - setup to pass kernel board revision information
172 * returns:(bit[0-3] sub version, higher bit[7-4] is higher version)
173 *************************************************************************/
174 #ifdef CONFIG_REVISION_TAG
175 u32 __weak get_board_rev(void)
181 /********************************************************
182 * get_base(); get upper addr of current execution
183 *******************************************************/
184 static u32 get_base(void)
188 __asm__ __volatile__("mov %0, pc \n":"=r"(val)::"memory");
194 /********************************************************
195 * is_running_in_flash() - tell if currently running in
197 *******************************************************/
198 u32 is_running_in_flash(void)
201 return 1; /* in FLASH */
203 return 0; /* running in SRAM or SDRAM */
206 /********************************************************
207 * is_running_in_sram() - tell if currently running in
209 *******************************************************/
210 u32 is_running_in_sram(void)
213 return 1; /* in SRAM */
215 return 0; /* running in FLASH or SDRAM */
218 /********************************************************
219 * is_running_in_sdram() - tell if currently running in
221 *******************************************************/
222 u32 is_running_in_sdram(void)
225 return 1; /* in SDRAM */
227 return 0; /* running in SRAM or FLASH */
230 /***************************************************************
231 * get_boot_type() - Is this an XIP type device or a stream one
232 * bits 4-0 specify type. Bit 5 says mem/perif
233 ***************************************************************/
234 u32 get_boot_type(void)
236 return (readl(&ctrl_base->status) & SYSBOOT_MASK);
239 /*************************************************************
240 * get_device_type(): tell if GP/HS/EMU/TST
241 *************************************************************/
242 u32 get_device_type(void)
244 return ((readl(&ctrl_base->status) & (DEVICE_MASK)) >> 8);
247 #ifdef CONFIG_DISPLAY_CPUINFO
249 * Print CPU information
251 int print_cpuinfo (void)
253 char *cpu_family_s, *cpu_s, *sec_s, *max_clk;
255 switch (get_cpu_family()) {
257 cpu_family_s = "OMAP";
258 switch (get_cpu_type()) {
275 if ((get_cpu_rev() >= CPU_3XX_ES31) &&
276 (get_sku_id() == SKUID_CLK_720MHZ))
284 switch (get_cpu_type()) {
298 cpu_family_s = "OMAP";
299 switch (get_cpu_type()) {
310 cpu_family_s = "OMAP";
315 switch (get_device_type()) {
332 if (CPU_OMAP36XX == get_cpu_family())
333 printf("%s%s-%s ES%s, CPU-OPP2, L3-200MHz, Max CPU Clock %s\n",
334 cpu_family_s, cpu_s, sec_s,
335 rev_s_37xx[get_cpu_rev()], max_clk);
337 printf("%s%s-%s ES%s, CPU-OPP2, L3-165MHz, Max CPU Clock %s\n",
338 cpu_family_s, cpu_s, sec_s,
339 rev_s[get_cpu_rev()], max_clk);
343 #endif /* CONFIG_DISPLAY_CPUINFO */