1 /* 2 * Copyright (c) 2011 The Chromium OS Authors. 3 * SPDX-License-Identifier: GPL-2.0+ 4 */ 5 6 #include <common.h> 7 #include <os.h> 8 #include <asm/state.h> 9 10 DECLARE_GLOBAL_DATA_PTR; 11 12 void reset_cpu(ulong ignored) 13 { 14 if (state_uninit()) 15 os_exit(2); 16 17 /* This is considered normal termination for now */ 18 os_exit(0); 19 } 20 21 int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 22 { 23 reset_cpu(0); 24 25 return 0; 26 } 27 28 /* delay x useconds */ 29 void __udelay(unsigned long usec) 30 { 31 os_usleep(usec); 32 } 33 34 unsigned long __attribute__((no_instrument_function)) timer_get_us(void) 35 { 36 return os_get_nsec() / 1000; 37 } 38 39 int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images) 40 { 41 if (flag & (BOOTM_STATE_OS_GO | BOOTM_STATE_OS_FAKE_GO)) { 42 bootstage_mark(BOOTSTAGE_ID_RUN_OS); 43 printf("## Transferring control to Linux (at address %08lx)...\n", 44 images->ep); 45 reset_cpu(0); 46 } 47 48 return 0; 49 } 50 51 int cleanup_before_linux(void) 52 { 53 return 0; 54 } 55 56 void *map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags) 57 { 58 return (void *)(gd->arch.ram_buf + paddr); 59 } 60 61 phys_addr_t map_to_sysmem(void *ptr) 62 { 63 return (u8 *)ptr - gd->arch.ram_buf; 64 } 65 66 void flush_dcache_range(unsigned long start, unsigned long stop) 67 { 68 } 69