1 /* 2 * (C) Copyright 2004, Psyent Corporation <www.psyent.com> 3 * Scott McNutt <smcnutt@psyent.com> 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 #include <common.h> 9 #include <nios2.h> 10 #include <nios2-io.h> 11 #include <asm/cache.h> 12 13 DECLARE_GLOBAL_DATA_PTR; 14 15 #if defined (CONFIG_SYS_NIOS_SYSID_BASE) 16 extern void display_sysid (void); 17 #endif /* CONFIG_SYS_NIOS_SYSID_BASE */ 18 19 #ifdef CONFIG_DISPLAY_CPUINFO 20 int print_cpuinfo(void) 21 { 22 printf ("CPU : Nios-II\n"); 23 #if !defined(CONFIG_SYS_NIOS_SYSID_BASE) 24 printf ("SYSID : <unknown>\n"); 25 #else 26 display_sysid (); 27 #endif 28 return (0); 29 } 30 #endif /* CONFIG_DISPLAY_CPUINFO */ 31 32 int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 33 { 34 disable_interrupts(); 35 /* indirect call to go beyond 256MB limitation of toolchain */ 36 nios2_callr(CONFIG_SYS_RESET_ADDR); 37 return 0; 38 } 39 40 int dcache_status(void) 41 { 42 return 1; 43 } 44 45 void dcache_enable(void) 46 { 47 flush_dcache(CONFIG_SYS_DCACHE_SIZE, CONFIG_SYS_DCACHELINE_SIZE); 48 } 49 50 void dcache_disable(void) 51 { 52 flush_dcache(CONFIG_SYS_DCACHE_SIZE, CONFIG_SYS_DCACHELINE_SIZE); 53 } 54 55 int arch_cpu_init(void) 56 { 57 gd->cpu_clk = CONFIG_SYS_CLK_FREQ; 58 gd->ram_size = CONFIG_SYS_SDRAM_SIZE; 59 60 return 0; 61 } 62