1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * (C) Copyright 2008 - 2013 Tensilica Inc. 4 * (C) Copyright 2014 - 2016 Cadence Design Systems Inc. 5 */ 6 7 /* 8 * CPU specific code 9 */ 10 11 #include <common.h> 12 #include <command.h> 13 #include <linux/stringify.h> 14 #include <asm/global_data.h> 15 #include <asm/cache.h> 16 #include <asm/string.h> 17 #include <asm/misc.h> 18 19 DECLARE_GLOBAL_DATA_PTR; 20 21 gd_t *gd __attribute__((section(".data"))); 22 23 #if defined(CONFIG_DISPLAY_CPUINFO) 24 /* 25 * Print information about the CPU. 26 */ 27 28 int print_cpuinfo(void) 29 { 30 char buf[120], mhz[8]; 31 uint32_t id0, id1; 32 33 asm volatile ("rsr %0, 176\n" 34 "rsr %1, 208\n" 35 : "=r"(id0), "=r"(id1)); 36 37 sprintf(buf, "CPU: Xtensa %s (id: %08x:%08x) at %s MHz\n", 38 XCHAL_CORE_ID, id0, id1, strmhz(mhz, gd->cpu_clk)); 39 puts(buf); 40 return 0; 41 } 42 #endif 43 44 int arch_cpu_init(void) 45 { 46 gd->ram_size = CONFIG_SYS_SDRAM_SIZE; 47 return 0; 48 } 49 50 int dram_init(void) 51 { 52 return 0; 53 } 54