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