1 /* 2 * (C) Copyright 2010 3 * Renesas Solutions Corp. 4 * Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> 5 * 6 * SPDX-License-Identifier: GPL-2.0+ 7 */ 8 9 /* 10 * Linux SuperH zImage loading and boot 11 */ 12 13 #include <common.h> 14 #include <asm/io.h> 15 #include <asm/zimage.h> 16 17 int do_sh_zimageboot (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 18 { 19 ulong (*zboot_entry)(int, char * const []) = NULL; 20 char *s0, *s1; 21 unsigned char *param = NULL; 22 char *cmdline; 23 char *bootargs; 24 25 disable_interrupts(); 26 27 if (argc >= 3) { 28 /* argv[1] holds the address of the zImage */ 29 s0 = argv[1]; 30 /* argv[2] holds the address of zero page */ 31 s1 = argv[2]; 32 } else { 33 goto exit; 34 } 35 36 if (s0) 37 zboot_entry = (ulong (*)(int, char * const []))simple_strtoul(s0, NULL, 16); 38 39 /* empty_zero_page */ 40 if (s1) 41 param = (unsigned char*)simple_strtoul(s1, NULL, 16); 42 43 /* Linux kernel command line */ 44 cmdline = (char *)param + COMMAND_LINE; 45 bootargs = env_get("bootargs"); 46 47 /* Clear zero page */ 48 /* cppcheck-suppress nullPointer */ 49 memset(param, 0, 0x1000); 50 51 /* Set commandline */ 52 strcpy(cmdline, bootargs); 53 54 /* Boot */ 55 zboot_entry(0, NULL); 56 57 exit: 58 return -1; 59 } 60 61 U_BOOT_CMD( 62 zimageboot, 3, 0, do_sh_zimageboot, 63 "Boot zImage for Renesas SH", 64 "" 65 ); 66