1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * System information routines for all OMAP based boards. 4 * 5 * (C) Copyright 2017 Linaro Ltd. 6 * Sam Protsenko <semen.protsenko@linaro.org> 7 */ 8 9 #include <asm/arch/omap.h> 10 #include <asm/io.h> 11 #include <asm/omap_common.h> 12 13 /** 14 * Tell if device is GP/HS/EMU/TST. 15 */ 16 u32 get_device_type(void) 17 { 18 #if defined(CONFIG_OMAP34XX) 19 /* 20 * On OMAP3 systems we call this early enough that we must just 21 * use the direct offset for safety. 22 */ 23 return (readl(OMAP34XX_CTRL_BASE + 0x2f0) & DEVICE_TYPE_MASK) >> 24 DEVICE_TYPE_SHIFT; 25 #else 26 return (readl((*ctrl)->control_status) & DEVICE_TYPE_MASK) >> 27 DEVICE_TYPE_SHIFT; 28 #endif 29 } 30