[people/ms/u-boot.git] / arch / arm / cpu / armv7 / am33xx / sys_info.c

/*
 * sys_info.c
 *
 * System information functions
 *
 * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
 *
 * Derived from Beagle Board and 3430 SDP code by
 *      Richard Woodruff <r-woodruff2@ti.com>
 *      Syed Mohammed Khasim <khasim@ti.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <asm/io.h>
#include <asm/arch/sys_proto.h>
#include <asm/arch/cpu.h>
#include <asm/arch/clock.h>

struct ctrl_stat *cstat = (struct ctrl_stat *)CTRL_BASE;

/**
 * get_cpu_rev(void) - extract rev info
 */
u32 get_cpu_rev(void)
{
	u32 id;
	u32 rev;

	id = readl(DEVICE_ID);
	rev = (id >> 28) & 0xff;

	return rev;
}

/**
 * get_cpu_type(void) - extract cpu info
 */
u32 get_cpu_type(void)
{
	u32 id = 0;
	u32 partnum;

	id = readl(DEVICE_ID);
	partnum = (id >> 12) & 0xffff;

	return partnum;
}

/**
 * get_board_rev() - setup to pass kernel board revision information
 * returns:(bit[0-3] sub version, higher bit[7-4] is higher version)
 */
u32 get_board_rev(void)
{
	return BOARD_REV_ID;
}

/**
 * get_device_type(): tell if GP/HS/EMU/TST
 */
u32 get_device_type(void)
{
	int mode;
	mode = readl(&cstat->statusreg) & (DEVICE_MASK);
	return mode >>= 8;
}

/**
 * get_sysboot_value(void) - return SYS_BOOT[4:0]
 */
u32 get_sysboot_value(void)
{
	int mode;
	mode = readl(&cstat->statusreg) & (SYSBOOT_MASK);
	return mode;
}

#ifdef CONFIG_DISPLAY_CPUINFO
/**
 * Print CPU information
 */
int print_cpuinfo(void)
{
	char *cpu_s, *sec_s;

	switch (get_cpu_type()) {
	case AM335X:
		cpu_s = "AM335X";
		break;
	case TI81XX:
		cpu_s = "TI81XX";
		break;
	default:
		cpu_s = "Unknown cpu type";
		break;
	}

	switch (get_device_type()) {
	case TST_DEVICE:
		sec_s = "TST";
		break;
	case EMU_DEVICE:
		sec_s = "EMU";
		break;
	case HS_DEVICE:
		sec_s = "HS";
		break;
	case GP_DEVICE:
		sec_s = "GP";
		break;
	default:
		sec_s = "?";
	}

	printf("%s-%s rev %d\n", cpu_s, sec_s, get_cpu_rev());

	return 0;
}
#endif	/* CONFIG_DISPLAY_CPUINFO */
Commit	Line	Data
5655108a CN	1	/*
	2	* sys_info.c
	3	*
	4	* System information functions
	5	*
	6	* Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
	7	*
	8	* Derived from Beagle Board and 3430 SDP code by
	9	* Richard Woodruff <r-woodruff2@ti.com>
	10	* Syed Mohammed Khasim <khasim@ti.com>
	11	*
1a459660	12	* SPDX-License-Identifier: GPL-2.0+
5655108a CN	13	*/
	14
	15	#include <common.h>
	16	#include <asm/io.h>
	17	#include <asm/arch/sys_proto.h>
	18	#include <asm/arch/cpu.h>
	19	#include <asm/arch/clock.h>
	20
	21	struct ctrl_stat cstat = (struct ctrl_stat )CTRL_BASE;
	22
	23	/**
	24	* get_cpu_rev(void) - extract rev info
	25	*/
	26	u32 get_cpu_rev(void)
	27	{
	28	u32 id;
	29	u32 rev;
	30
	31	id = readl(DEVICE_ID);
	32	rev = (id >> 28) & 0xff;
	33
	34	return rev;
	35	}
	36
	37	/**
	38	* get_cpu_type(void) - extract cpu info
	39	*/
	40	u32 get_cpu_type(void)
	41	{
	42	u32 id = 0;
	43	u32 partnum;
	44
	45	id = readl(DEVICE_ID);
	46	partnum = (id >> 12) & 0xffff;
	47
	48	return partnum;
	49	}
	50
	51	/**
	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)
	54	*/
	55	u32 get_board_rev(void)
	56	{
	57	return BOARD_REV_ID;
	58	}
	59
	60	/**
	61	* get_device_type(): tell if GP/HS/EMU/TST
	62	*/
	63	u32 get_device_type(void)
	64	{
	65	int mode;
	66	mode = readl(&cstat->statusreg) & (DEVICE_MASK);
	67	return mode >>= 8;
	68	}
	69
	70	/**
	71	* get_sysboot_value(void) - return SYS_BOOT[4:0]
	72	*/
	73	u32 get_sysboot_value(void)
	74	{
	75	int mode;
	76	mode = readl(&cstat->statusreg) & (SYSBOOT_MASK);
77	return mode;
78	}
79
80	#ifdef CONFIG_DISPLAY_CPUINFO
81	/**
82	* Print CPU information
83	*/
84	int print_cpuinfo(void)
85	{
86	char cpu_s, sec_s;
5655108a CN	87
	88	switch (get_cpu_type()) {
	89	case AM335X:
	90	cpu_s = "AM335X";
	91	break;
8b029f22 MP	92	case TI81XX:
	93	cpu_s = "TI81XX";
	94	break;
5655108a CN	95	default:
	96	cpu_s = "Unknown cpu type";
	97	break;
	98	}
	99
	100	switch (get_device_type()) {
	101	case TST_DEVICE:
	102	sec_s = "TST";
	103	break;
	104	case EMU_DEVICE:
	105	sec_s = "EMU";
	106	break;
	107	case HS_DEVICE:
	108	sec_s = "HS";
	109	break;
	110	case GP_DEVICE:
	111	sec_s = "GP";
	112	break;
	113	default:
	114	sec_s = "?";
	115	}
	116
30bba017	117	printf("%s-%s rev %d\n", cpu_s, sec_s, get_cpu_rev());
5655108a CN	118
	119	return 0;
	120	}
	121	#endif /* CONFIG_DISPLAY_CPUINFO */