1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (C) 2011 Andes Technology Corporation 4 * Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com> 5 * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com> 6 * Rick Chen, Andes Technology Corporation <rick@andestech.com> 7 */ 8 9 #include <common.h> 10 #include <command.h> 11 #include <image.h> 12 #include <u-boot/zlib.h> 13 #include <asm/byteorder.h> 14 #include <asm/bootm.h> 15 16 DECLARE_GLOBAL_DATA_PTR; 17 18 int arch_fixup_fdt(void *blob) 19 { 20 return 0; 21 } 22 23 int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images) 24 { 25 bd_t *bd = gd->bd; 26 char *s; 27 int machid = bd->bi_arch_number; 28 void (*theKernel)(int arch, uint params); 29 30 /* 31 * allow the PREP bootm subcommand, it is required for bootm to work 32 */ 33 if (flag & BOOTM_STATE_OS_PREP) 34 return 0; 35 36 if ((flag != 0) && (flag != BOOTM_STATE_OS_GO)) 37 return 1; 38 39 theKernel = (void (*)(int, uint))images->ep; 40 41 s = env_get("machid"); 42 if (s) { 43 machid = simple_strtoul(s, NULL, 16); 44 printf("Using machid 0x%x from environment\n", machid); 45 } 46 47 bootstage_mark(BOOTSTAGE_ID_RUN_OS); 48 49 debug("## Transferring control to Linux (at address %08lx) ...\n", 50 (ulong)theKernel); 51 52 if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) { 53 #ifdef CONFIG_OF_LIBFDT 54 debug("using: FDT\n"); 55 if (image_setup_linux(images)) { 56 printf("FDT creation failed! hanging..."); 57 hang(); 58 } 59 #endif 60 } 61 62 /* we assume that the kernel is in place */ 63 printf("\nStarting kernel ...\n\n"); 64 65 cleanup_before_linux(); 66 if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) 67 theKernel(machid, (unsigned long)images->ft_addr); 68 69 /* does not return */ 70 71 return 1; 72 } 73