1 /* 2 * (C) Copyright 2008 - 2013 Tensilica Inc. 3 * (C) Copyright 2014 - 2016 Cadence Design Systems Inc. 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 /* 9 * CPU specific code 10 */ 11 12 #include <common.h> 13 #include <command.h> 14 #include <linux/stringify.h> 15 #include <asm/global_data.h> 16 #include <asm/cache.h> 17 #include <asm/string.h> 18 #include <asm/misc.h> 19 20 DECLARE_GLOBAL_DATA_PTR; 21 22 gd_t *gd __attribute__((section(".data"))); 23 24 #if defined(CONFIG_DISPLAY_CPUINFO) 25 /* 26 * Print information about the CPU. 27 */ 28 29 int print_cpuinfo(void) 30 { 31 char buf[120], mhz[8]; 32 uint32_t id0, id1; 33 34 asm volatile ("rsr %0, 176\n" 35 "rsr %1, 208\n" 36 : "=r"(id0), "=r"(id1)); 37 38 sprintf(buf, "CPU: Xtensa %s (id: %08x:%08x) at %s MHz\n", 39 XCHAL_CORE_ID, id0, id1, strmhz(mhz, gd->cpu_clk)); 40 puts(buf); 41 return 0; 42 } 43 #endif 44 45 int arch_cpu_init(void) 46 { 47 gd->ram_size = CONFIG_SYS_SDRAM_SIZE; 48 return 0; 49 } 50