4 * System information functions
6 * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.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/sys_proto.h>
18 #include <asm/arch/cpu.h>
19 #include <asm/arch/clock.h>
21 struct ctrl_stat *cstat = (struct ctrl_stat *)CTRL_BASE;
24 * get_cpu_rev(void) - extract rev info
31 id = readl(DEVICE_ID);
32 rev = (id >> 28) & 0xff;
38 * get_cpu_type(void) - extract cpu info
40 u32 get_cpu_type(void)
45 id = readl(DEVICE_ID);
46 partnum = (id >> 12) & 0xffff;
52 * get_board_rev() - setup to pass kernel board revision information
53 * returns:(bit[0-3] sub version, higher bit[7-4] is higher version)
55 u32 get_board_rev(void)
61 * get_device_type(): tell if GP/HS/EMU/TST
63 u32 get_device_type(void)
66 mode = readl(&cstat->statusreg) & DEVICE_MASK;
71 * get_sysboot_value(void) - return SYS_BOOT[4:0]
73 u32 get_sysboot_value(void)
76 mode = readl(&cstat->statusreg) & SYSBOOT_MASK;
80 #ifdef CONFIG_DISPLAY_CPUINFO
81 static char *cpu_revs[] = {
87 static char *dev_types[] = {
95 * Print CPU information
97 int print_cpuinfo(void)
99 char *cpu_s, *sec_s, *rev_s;
101 switch (get_cpu_type()) {
109 cpu_s = "Unknown CPU type";
112 if (get_cpu_rev() < ARRAY_SIZE(cpu_revs))
113 rev_s = cpu_revs[get_cpu_rev()];
117 if (get_device_type() < ARRAY_SIZE(dev_types))
118 sec_s = dev_types[get_device_type()];
122 printf("%s-%s rev %s\n", cpu_s, sec_s, rev_s);
126 #endif /* CONFIG_DISPLAY_CPUINFO */