1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * (C) Copyright 2009 4 * Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> 5 * 6 * (C) Copyright 2007-2012 7 * Nobobuhiro Iwamatsu <iwamatsu@nigauri.org> 8 * 9 * (C) Copyright 2003 10 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 11 */ 12 13 #include <common.h> 14 #include <asm/processor.h> 15 #include <asm/io.h> 16 17 #if defined(CONFIG_CPU_SH3) 18 #define TSTR 0x2 19 #define TCR0 0xc 20 #endif /* CONFIG_CPU_SH3 */ 21 22 #if defined(CONFIG_CPU_SH4) || defined(CONFIG_ARCH_RMOBILE) 23 #define TSTR 0x4 24 #define TCR0 0x10 25 #endif /* CONFIG_CPU_SH4 */ 26 27 #define TCR_TPSC 0x07 28 #define TSTR_STR0 BIT(0) 29 30 int timer_init(void) 31 { 32 writew(readw(TMU_BASE + TCR0) & ~TCR_TPSC, TMU_BASE + TCR0); 33 writeb(readb(TMU_BASE + TSTR) & ~TSTR_STR0, TMU_BASE + TSTR); 34 writeb(readb(TMU_BASE + TSTR) | TSTR_STR0, TMU_BASE + TSTR); 35 36 return 0; 37 } 38 39