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/csr.h> 15 16 DECLARE_GLOBAL_DATA_PTR; 17 18 __weak void board_quiesce_devices(void) 19 { 20 } 21 22 int arch_fixup_fdt(void *blob) 23 { 24 return 0; 25 } 26 27 int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images) 28 { 29 void (*kernel)(ulong hart, void *dtb); 30 31 /* 32 * allow the PREP bootm subcommand, it is required for bootm to work 33 */ 34 if (flag & BOOTM_STATE_OS_PREP) 35 return 0; 36 37 if ((flag != 0) && (flag != BOOTM_STATE_OS_GO)) 38 return 1; 39 40 kernel = (void (*)(ulong, void *))images->ep; 41 42 bootstage_mark(BOOTSTAGE_ID_RUN_OS); 43 44 debug("## Transferring control to Linux (at address %08lx) ...\n", 45 (ulong)kernel); 46 47 if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) { 48 #ifdef CONFIG_OF_LIBFDT 49 debug("using: FDT\n"); 50 if (image_setup_linux(images)) { 51 printf("FDT creation failed! hanging..."); 52 hang(); 53 } 54 #endif 55 } 56 57 /* we assume that the kernel is in place */ 58 printf("\nStarting kernel ...\n\n"); 59 60 cleanup_before_linux(); 61 62 if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) 63 kernel(csr_read(mhartid), images->ft_addr); 64 65 /* does not return */ 66 67 return 1; 68 } 69